diff options
Diffstat (limited to 'fs')
90 files changed, 2723 insertions, 1347 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 422370293cfd..e7bf01373bc4 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1428,17 +1428,18 @@ static void fill_prstatus(struct elf_prstatus *prstatus, * group-wide total, not its individual thread total. */ thread_group_cputime(p, &cputime); - cputime_to_timeval(cputime.utime, &prstatus->pr_utime); - cputime_to_timeval(cputime.stime, &prstatus->pr_stime); + prstatus->pr_utime = ns_to_timeval(cputime.utime); + prstatus->pr_stime = ns_to_timeval(cputime.stime); } else { - cputime_t utime, stime; + u64 utime, stime; task_cputime(p, &utime, &stime); - cputime_to_timeval(utime, &prstatus->pr_utime); - cputime_to_timeval(stime, &prstatus->pr_stime); + prstatus->pr_utime = ns_to_timeval(utime); + prstatus->pr_stime = ns_to_timeval(stime); } - cputime_to_timeval(p->signal->cutime, &prstatus->pr_cutime); - cputime_to_timeval(p->signal->cstime, &prstatus->pr_cstime); + + prstatus->pr_cutime = ns_to_timeval(p->signal->cutime); + prstatus->pr_cstime = ns_to_timeval(p->signal->cstime); } static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p, diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index d2e36f82c35d..ffca4bbc3d63 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -1349,17 +1349,17 @@ static void fill_prstatus(struct elf_prstatus *prstatus, * group-wide total, not its individual thread total. */ thread_group_cputime(p, &cputime); - cputime_to_timeval(cputime.utime, &prstatus->pr_utime); - cputime_to_timeval(cputime.stime, &prstatus->pr_stime); + prstatus->pr_utime = ns_to_timeval(cputime.utime); + prstatus->pr_stime = ns_to_timeval(cputime.stime); } else { - cputime_t utime, stime; + u64 utime, stime; task_cputime(p, &utime, &stime); - cputime_to_timeval(utime, &prstatus->pr_utime); - cputime_to_timeval(stime, &prstatus->pr_stime); + prstatus->pr_utime = ns_to_timeval(utime); + prstatus->pr_stime = ns_to_timeval(stime); } - cputime_to_timeval(p->signal->cutime, &prstatus->pr_cutime); - cputime_to_timeval(p->signal->cstime, &prstatus->pr_cstime); + prstatus->pr_cutime = ns_to_timeval(p->signal->cutime); + prstatus->pr_cstime = ns_to_timeval(p->signal->cstime); prstatus->pr_exec_fdpic_loadmap = p->mm->context.exec_fdpic_loadmap; prstatus->pr_interp_fdpic_loadmap = p->mm->context.interp_fdpic_loadmap; diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig index e7b478b49985..034f00f21390 100644 --- a/fs/cifs/Kconfig +++ b/fs/cifs/Kconfig @@ -9,8 +9,6 @@ config CIFS select CRYPTO_ARC4 select CRYPTO_ECB select CRYPTO_DES - select CRYPTO_SHA256 - select CRYPTO_CMAC help This is the client VFS module for the Common Internet File System (CIFS) protocol which is the successor to the Server Message Block @@ -169,11 +167,15 @@ config CIFS_NFSD_EXPORT config CIFS_SMB2 bool "SMB2 and SMB3 network file system support" - depends on CIFS && INET - select NLS + depends on CIFS select KEYS select FSCACHE select DNS_RESOLVER + select CRYPTO_AES + select CRYPTO_SHA256 + select CRYPTO_CMAC + select CRYPTO_AEAD2 + select CRYPTO_CCM help This enables support for the Server Message Block version 2 @@ -194,7 +196,7 @@ config CIFS_SMB2 config CIFS_SMB311 bool "SMB3.1.1 network file system support (Experimental)" - depends on CIFS_SMB2 && INET + depends on CIFS_SMB2 help This enables experimental support for the newest, SMB3.1.1, dialect. diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 66bd7fa9b7a6..058ac9b36f04 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -34,6 +34,7 @@ #include <linux/random.h> #include <linux/highmem.h> #include <crypto/skcipher.h> +#include <crypto/aead.h> static int cifs_crypto_shash_md5_allocate(struct TCP_Server_Info *server) @@ -75,24 +76,20 @@ int __cifs_calc_signature(struct smb_rqst *rqst, struct kvec *iov = rqst->rq_iov; int n_vec = rqst->rq_nvec; - for (i = 0; i < n_vec; i++) { + if (n_vec < 2 || iov[0].iov_len != 4) + return -EIO; + + for (i = 1; i < n_vec; i++) { if (iov[i].iov_len == 0) continue; if (iov[i].iov_base == NULL) { cifs_dbg(VFS, "null iovec entry\n"); return -EIO; } - /* The first entry includes a length field (which does not get - signed that occupies the first 4 bytes before the header */ - if (i == 0) { - if (iov[0].iov_len <= 8) /* cmd field at offset 9 */ - break; /* nothing to sign or corrupt header */ - rc = crypto_shash_update(shash, - iov[i].iov_base + 4, iov[i].iov_len - 4); - } else { - rc = crypto_shash_update(shash, - iov[i].iov_base, iov[i].iov_len); - } + if (i == 1 && iov[1].iov_len <= 4) + break; /* nothing to sign or corrupt header */ + rc = crypto_shash_update(shash, + iov[i].iov_base, iov[i].iov_len); if (rc) { cifs_dbg(VFS, "%s: Could not update with payload\n", __func__); @@ -168,6 +165,10 @@ int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, char smb_signature[20]; struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base; + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return -EIO; + if ((cifs_pdu == NULL) || (server == NULL)) return -EINVAL; @@ -209,12 +210,14 @@ int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *server, int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server, __u32 *pexpected_response_sequence_number) { - struct kvec iov; + struct kvec iov[2]; - iov.iov_base = cifs_pdu; - iov.iov_len = be32_to_cpu(cifs_pdu->smb_buf_length) + 4; + iov[0].iov_base = cifs_pdu; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)cifs_pdu + 4; + iov[1].iov_len = be32_to_cpu(cifs_pdu->smb_buf_length); - return cifs_sign_smbv(&iov, 1, server, + return cifs_sign_smbv(iov, 2, server, pexpected_response_sequence_number); } @@ -227,6 +230,10 @@ int cifs_verify_signature(struct smb_rqst *rqst, char what_we_think_sig_should_be[20]; struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base; + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return -EIO; + if (cifs_pdu == NULL || server == NULL) return -EINVAL; @@ -868,7 +875,7 @@ out: } void -cifs_crypto_shash_release(struct TCP_Server_Info *server) +cifs_crypto_secmech_release(struct TCP_Server_Info *server) { if (server->secmech.cmacaes) { crypto_free_shash(server->secmech.cmacaes); @@ -890,6 +897,16 @@ cifs_crypto_shash_release(struct TCP_Server_Info *server) server->secmech.hmacmd5 = NULL; } + if (server->secmech.ccmaesencrypt) { + crypto_free_aead(server->secmech.ccmaesencrypt); + server->secmech.ccmaesencrypt = NULL; + } + + if (server->secmech.ccmaesdecrypt) { + crypto_free_aead(server->secmech.ccmaesdecrypt); + server->secmech.ccmaesdecrypt = NULL; + } + kfree(server->secmech.sdesccmacaes); server->secmech.sdesccmacaes = NULL; kfree(server->secmech.sdeschmacsha256); diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 70f4e65fced2..15e1db8738ae 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1365,5 +1365,19 @@ MODULE_DESCRIPTION ("VFS to access servers complying with the SNIA CIFS Specification " "e.g. Samba and Windows"); MODULE_VERSION(CIFS_VERSION); +MODULE_SOFTDEP("pre: arc4"); +MODULE_SOFTDEP("pre: des"); +MODULE_SOFTDEP("pre: ecb"); +MODULE_SOFTDEP("pre: hmac"); +MODULE_SOFTDEP("pre: md4"); +MODULE_SOFTDEP("pre: md5"); +MODULE_SOFTDEP("pre: nls"); +#ifdef CONFIG_CIFS_SMB2 +MODULE_SOFTDEP("pre: aes"); +MODULE_SOFTDEP("pre: cmac"); +MODULE_SOFTDEP("pre: sha256"); +MODULE_SOFTDEP("pre: aead2"); +MODULE_SOFTDEP("pre: ccm"); +#endif /* CONFIG_CIFS_SMB2 */ module_init(init_cifs) module_exit(exit_cifs) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 7ea8a3393936..1a90bb3e2986 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -136,6 +136,8 @@ struct cifs_secmech { struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ struct sdesc *sdesccmacaes; /* ctxt to generate smb3 signature */ + struct crypto_aead *ccmaesencrypt; /* smb3 encryption aead */ + struct crypto_aead *ccmaesdecrypt; /* smb3 decryption aead */ }; /* per smb session structure/fields */ @@ -208,7 +210,7 @@ struct cifsInodeInfo; struct cifs_open_parms; struct smb_version_operations { - int (*send_cancel)(struct TCP_Server_Info *, void *, + int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *, struct mid_q_entry *); bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); /* setup request: allocate mid, sign message */ @@ -433,6 +435,14 @@ struct smb_version_operations { bool (*dir_needs_close)(struct cifsFileInfo *); long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t, loff_t); + /* init transform request - used for encryption for now */ + int (*init_transform_rq)(struct TCP_Server_Info *, struct smb_rqst *, + struct smb_rqst *); + /* free transform request */ + void (*free_transform_rq)(struct smb_rqst *); + int (*is_transform_hdr)(void *buf); + int (*receive_transform)(struct TCP_Server_Info *, + struct mid_q_entry **); }; struct smb_version_values { @@ -1119,7 +1129,10 @@ struct cifs_readdata { int (*read_into_pages)(struct TCP_Server_Info *server, struct cifs_readdata *rdata, unsigned int len); - struct kvec iov; + int (*copy_into_pages)(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, + struct iov_iter *iter); + struct kvec iov[2]; unsigned int pagesz; unsigned int tailsz; unsigned int credits; @@ -1302,6 +1315,13 @@ typedef int (mid_receive_t)(struct TCP_Server_Info *server, */ typedef void (mid_callback_t)(struct mid_q_entry *mid); +/* + * This is the protopyte for mid handle function. This is called once the mid + * has been recognized after decryption of the message. + */ +typedef int (mid_handle_t)(struct TCP_Server_Info *server, + struct mid_q_entry *mid); + /* one of these for every pending CIFS request to the server */ struct mid_q_entry { struct list_head qhead; /* mids waiting on reply from this server */ @@ -1316,6 +1336,7 @@ struct mid_q_entry { #endif mid_receive_t *receive; /* call receive callback */ mid_callback_t *callback; /* call completion callback */ + mid_handle_t *handle; /* call handle mid callback */ void *callback_data; /* general purpose pointer for callback */ void *resp_buf; /* pointer to received SMB header */ int mid_state; /* wish this were enum but can not pass to wait_event */ @@ -1323,6 +1344,7 @@ struct mid_q_entry { bool large_buf:1; /* if valid response, is pointer to large buf */ bool multiRsp:1; /* multiple trans2 responses for one request */ bool multiEnd:1; /* both received */ + bool decrypted:1; /* decrypted entry */ }; /* Make code in transport.c a little cleaner by moving @@ -1475,7 +1497,9 @@ static inline void free_dfs_info_array(struct dfs_info3_param *param, #define CIFS_OBREAK_OP 0x0100 /* oplock break request */ #define CIFS_NEG_OP 0x0200 /* negotiate request */ #define CIFS_OP_MASK 0x0380 /* mask request type */ + #define CIFS_HAS_CREDITS 0x0400 /* already has credits */ +#define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */ /* Security Flags: indicate type of session setup needed */ #define CIFSSEC_MAY_SIGN 0x00001 diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index c7b3c841e660..406d2c10ba78 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -75,10 +75,16 @@ extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer, extern void DeleteMidQEntry(struct mid_q_entry *midEntry); extern void cifs_delete_mid(struct mid_q_entry *mid); extern void cifs_wake_up_task(struct mid_q_entry *mid); +extern int cifs_handle_standard(struct TCP_Server_Info *server, + struct mid_q_entry *mid); +extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); extern int cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, mid_receive_t *receive, mid_callback_t *callback, - void *cbdata, const int flags); + mid_handle_t *handle, void *cbdata, const int flags); +extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, + struct smb_rqst *rqst, int *resp_buf_type, + const int flags, struct kvec *resp_iov); extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, struct smb_hdr * /* input */ , struct smb_hdr * /* out */ , @@ -96,7 +102,8 @@ extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int *credits); extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, struct kvec *, int /* nvec to send */, - int * /* type of buf returned */ , const int flags); + int * /* type of buf returned */, const int flags, + struct kvec * /* resp vec */); extern int SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *ptcon, struct smb_hdr *in_buf , @@ -441,7 +448,7 @@ extern int SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *, const struct nls_table *); extern int setup_ntlm_response(struct cifs_ses *, const struct nls_table *); extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); -extern void cifs_crypto_shash_release(struct TCP_Server_Info *); +extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); extern int calc_seckey(struct cifs_ses *); extern int generate_smb30signingkey(struct cifs_ses *); extern int generate_smb311signingkey(struct cifs_ses *); diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index b47261858e6d..f5099fb8a22f 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -673,6 +673,7 @@ CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) return rc; rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); + cifs_small_buf_release(smb_buffer); if (rc) cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); @@ -707,9 +708,9 @@ CIFSSMBEcho(struct TCP_Server_Info *server) { ECHO_REQ *smb; int rc = 0; - struct kvec iov; - struct smb_rqst rqst = { .rq_iov = &iov, - .rq_nvec = 1 }; + struct kvec iov[2]; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; cifs_dbg(FYI, "In echo request\n"); @@ -724,10 +725,13 @@ CIFSSMBEcho(struct TCP_Server_Info *server) put_bcc(1, &smb->hdr); smb->Data[0] = 'a'; inc_rfc1001_len(smb, 3); - iov.iov_base = smb; - iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; - rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, + iov[0].iov_len = 4; + iov[0].iov_base = smb; + iov[1].iov_len = get_rfc1002_length(smb); + iov[1].iov_base = (char *)smb + 4; + + rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, server, CIFS_ASYNC_OP | CIFS_ECHO_OP); if (rc) cifs_dbg(FYI, "Echo request failed: %d\n", rc); @@ -772,6 +776,7 @@ CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) pSMB->AndXCommand = 0xFF; rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); session_already_dead: mutex_unlock(&ses->session_mutex); @@ -1394,8 +1399,8 @@ openRetry: * Discard any remaining data in the current SMB. To do this, we borrow the * current bigbuf. */ -static int -discard_remaining_data(struct TCP_Server_Info *server) +int +cifs_discard_remaining_data(struct TCP_Server_Info *server) { unsigned int rfclen = get_rfc1002_length(server->smallbuf); int remaining = rfclen + 4 - server->total_read; @@ -1421,7 +1426,7 @@ cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) int length; struct cifs_readdata *rdata = mid->callback_data; - length = discard_remaining_data(server); + length = cifs_discard_remaining_data(server); dequeue_mid(mid, rdata->result); return length; } @@ -1454,7 +1459,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) if (server->ops->is_status_pending && server->ops->is_status_pending(buf, server, 0)) { - discard_remaining_data(server); + cifs_discard_remaining_data(server); return -1; } @@ -1507,10 +1512,12 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) } /* set up first iov for signature check */ - rdata->iov.iov_base = buf; - rdata->iov.iov_len = server->total_read; - cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", - rdata->iov.iov_base, rdata->iov.iov_len); + rdata->iov[0].iov_base = buf; + rdata->iov[0].iov_len = 4; + rdata->iov[1].iov_base = buf + 4; + rdata->iov[1].iov_len = server->total_read - 4; + cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n", + rdata->iov[0].iov_base, server->total_read); /* how much data is in the response? */ data_len = server->ops->read_data_length(buf); @@ -1543,8 +1550,8 @@ cifs_readv_callback(struct mid_q_entry *mid) struct cifs_readdata *rdata = mid->callback_data; struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); struct TCP_Server_Info *server = tcon->ses->server; - struct smb_rqst rqst = { .rq_iov = &rdata->iov, - .rq_nvec = 1, + struct smb_rqst rqst = { .rq_iov = rdata->iov, + .rq_nvec = 2, .rq_pages = rdata->pages, .rq_npages = rdata->nr_pages, .rq_pagesz = rdata->pagesz, @@ -1599,8 +1606,8 @@ cifs_async_readv(struct cifs_readdata *rdata) READ_REQ *smb = NULL; int wct; struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); - struct smb_rqst rqst = { .rq_iov = &rdata->iov, - .rq_nvec = 1 }; + struct smb_rqst rqst = { .rq_iov = rdata->iov, + .rq_nvec = 2 }; cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", __func__, rdata->offset, rdata->bytes); @@ -1640,12 +1647,14 @@ cifs_async_readv(struct cifs_readdata *rdata) } /* 4 for RFC1001 length + 1 for BCC */ - rdata->iov.iov_base = smb; - rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; + rdata->iov[0].iov_base = smb; + rdata->iov[0].iov_len = 4; + rdata->iov[1].iov_base = (char *)smb + 4; + rdata->iov[1].iov_len = get_rfc1002_length(smb); kref_get(&rdata->refcount); rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, - cifs_readv_callback, rdata, 0); + cifs_readv_callback, NULL, rdata, 0); if (rc == 0) cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); @@ -1667,6 +1676,7 @@ CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, int wct; int resp_buf_type = 0; struct kvec iov[1]; + struct kvec rsp_iov; __u32 pid = io_parms->pid; __u16 netfid = io_parms->netfid; __u64 offset = io_parms->offset; @@ -1716,10 +1726,11 @@ CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, iov[0].iov_base = (char *)pSMB; iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; - rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, - &resp_buf_type, CIFS_LOG_ERROR); + rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, + CIFS_LOG_ERROR, &rsp_iov); + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); - pSMBr = (READ_RSP *)iov[0].iov_base; + pSMBr = (READ_RSP *)rsp_iov.iov_base; if (rc) { cifs_dbg(VFS, "Send error in read = %d\n", rc); } else { @@ -1747,12 +1758,11 @@ CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, } } -/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ if (*buf) { - free_rsp_buf(resp_buf_type, iov[0].iov_base); + free_rsp_buf(resp_buf_type, rsp_iov.iov_base); } else if (resp_buf_type != CIFS_NO_BUFFER) { /* return buffer to caller to free */ - *buf = iov[0].iov_base; + *buf = rsp_iov.iov_base; if (resp_buf_type == CIFS_SMALL_BUFFER) *pbuf_type = CIFS_SMALL_BUFFER; else if (resp_buf_type == CIFS_LARGE_BUFFER) @@ -2093,7 +2103,7 @@ cifs_async_writev(struct cifs_writedata *wdata, WRITE_REQ *smb = NULL; int wct; struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); - struct kvec iov; + struct kvec iov[2]; struct smb_rqst rqst = { }; if (tcon->ses->capabilities & CAP_LARGE_FILES) { @@ -2126,11 +2136,13 @@ cifs_async_writev(struct cifs_writedata *wdata, cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); /* 4 for RFC1001 length + 1 for BCC */ - iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; - iov.iov_base = smb; + iov[0].iov_len = 4; + iov[0].iov_base = smb; + iov[1].iov_len = get_rfc1002_length(smb) + 1; + iov[1].iov_base = (char *)smb + 4; - rqst.rq_iov = &iov; - rqst.rq_nvec = 1; + rqst.rq_iov = iov; + rqst.rq_nvec = 2; rqst.rq_pages = wdata->pages; rqst.rq_npages = wdata->nr_pages; rqst.rq_pagesz = wdata->pagesz; @@ -2151,12 +2163,12 @@ cifs_async_writev(struct cifs_writedata *wdata, (struct smb_com_writex_req *)smb; inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); put_bcc(wdata->bytes + 5, &smbw->hdr); - iov.iov_len += 4; /* pad bigger by four bytes */ + iov[1].iov_len += 4; /* pad bigger by four bytes */ } kref_get(&wdata->refcount); rc = cifs_call_async(tcon->ses->server, &rqst, NULL, - cifs_writev_callback, wdata, 0); + cifs_writev_callback, NULL, wdata, 0); if (rc == 0) cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); @@ -2182,6 +2194,7 @@ CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, __u64 offset = io_parms->offset; struct cifs_tcon *tcon = io_parms->tcon; unsigned int count = io_parms->length; + struct kvec rsp_iov; *nbytes = 0; @@ -2240,8 +2253,9 @@ CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, else /* wct == 12 pad bigger by four bytes */ iov[0].iov_len = smb_hdr_len + 8; - - rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); + rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, + &rsp_iov); + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); if (rc) { cifs_dbg(FYI, "Send error Write2 = %d\n", rc); @@ -2249,7 +2263,7 @@ CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, /* presumably this can not happen, but best to be safe */ rc = -EIO; } else { - WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; + WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; *nbytes = le16_to_cpu(pSMBr->CountHigh); *nbytes = (*nbytes) << 16; *nbytes += le16_to_cpu(pSMBr->Count); @@ -2263,8 +2277,7 @@ CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, *nbytes &= 0xFFFF; } -/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ - free_rsp_buf(resp_buf_type, iov[0].iov_base); + free_rsp_buf(resp_buf_type, rsp_iov.iov_base); /* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ @@ -2279,6 +2292,7 @@ int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; LOCK_REQ *pSMB = NULL; struct kvec iov[2]; + struct kvec rsp_iov; int resp_buf_type; __u16 count; @@ -2307,7 +2321,9 @@ int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); - rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); + rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP, + &rsp_iov); + cifs_small_buf_release(pSMB); if (rc) cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); @@ -2368,14 +2384,12 @@ CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, inc_rfc1001_len(pSMB, count); pSMB->ByteCount = cpu_to_le16(count); - if (waitFlag) { + if (waitFlag) rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMB, &bytes_returned); - cifs_small_buf_release(pSMB); - } else { + else rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); - /* SMB buffer freed by function above */ - } + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); if (rc) cifs_dbg(FYI, "Send error in Lock = %d\n", rc); @@ -2401,6 +2415,7 @@ CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, int resp_buf_type = 0; __u16 params, param_offset, offset, byte_count, count; struct kvec iov[1]; + struct kvec rsp_iov; cifs_dbg(FYI, "Posix Lock\n"); @@ -2462,11 +2477,10 @@ CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, iov[0].iov_base = (char *)pSMB; iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, - &resp_buf_type, timeout); - pSMB = NULL; /* request buf already freed by SendReceive2. Do - not try to free it twice below on exit */ - pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; + &resp_buf_type, timeout, &rsp_iov); + pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; } + cifs_small_buf_release(pSMB); if (rc) { cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); @@ -2506,10 +2520,7 @@ CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, } plk_err_exit: - if (pSMB) - cifs_small_buf_release(pSMB); - - free_rsp_buf(resp_buf_type, iov[0].iov_base); + free_rsp_buf(resp_buf_type, rsp_iov.iov_base); /* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ @@ -2536,6 +2547,7 @@ CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) pSMB->LastWriteTime = 0xFFFFFFFF; pSMB->ByteCount = 0; rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); if (rc) { if (rc != -EINTR) { @@ -2565,6 +2577,7 @@ CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) pSMB->FileID = (__u16) smb_file_id; pSMB->ByteCount = 0; rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); if (rc) cifs_dbg(VFS, "Send error in Flush = %d\n", rc); @@ -3820,6 +3833,7 @@ CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, int buf_type = 0; QUERY_SEC_DESC_REQ *pSMB; struct kvec iov[1]; + struct kvec rsp_iov; cifs_dbg(FYI, "GetCifsACL\n"); @@ -3843,7 +3857,8 @@ CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, - 0); + 0, &rsp_iov); + cifs_small_buf_release(pSMB); cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); if (rc) { cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); @@ -3855,11 +3870,11 @@ CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, char *pdata; /* validate_nttransact */ - rc = validate_ntransact(iov[0].iov_base, (char **)&parm, + rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, &pdata, &parm_len, pbuflen); if (rc) goto qsec_out; - pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; + pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; cifs_dbg(FYI, "smb %p parm %p data %p\n", pSMBr, parm, *acl_inf); @@ -3896,8 +3911,7 @@ CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, } } qsec_out: - free_rsp_buf(buf_type, iov[0].iov_base); -/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ + free_rsp_buf(buf_type, rsp_iov.iov_base); return rc; } @@ -4666,6 +4680,7 @@ CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, pSMB->FileID = searchHandle; pSMB->ByteCount = 0; rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); if (rc) cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); @@ -5687,6 +5702,7 @@ CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, inc_rfc1001_len(pSMB, byte_count); pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); if (rc) { cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", rc); @@ -5758,6 +5774,7 @@ CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, pSMB->ByteCount = cpu_to_le16(byte_count); memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); if (rc) cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", rc); @@ -5818,6 +5835,7 @@ CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, pSMB->ByteCount = cpu_to_le16(byte_count); *data_offset = delete_file ? 1 : 0; rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); if (rc) cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); @@ -6057,6 +6075,7 @@ CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); + cifs_small_buf_release(pSMB); if (rc) cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", rc); diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 35ae49ed1f76..777ad9f4fc3c 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -787,6 +787,15 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid) dump_smb(buf, server->total_read); + return cifs_handle_standard(server, mid); +} + +int +cifs_handle_standard(struct TCP_Server_Info *server, struct mid_q_entry *mid) +{ + char *buf = server->large_buf ? server->bigbuf : server->smallbuf; + int length; + /* * We know that we received enough to get to the MID as we * checked the pdu_length earlier. Now check to see @@ -872,12 +881,19 @@ cifs_demultiplex_thread(void *p) continue; server->total_read += length; - mid_entry = server->ops->find_mid(server, buf); + if (server->ops->is_transform_hdr && + server->ops->receive_transform && + server->ops->is_transform_hdr(buf)) { + length = server->ops->receive_transform(server, + &mid_entry); + } else { + mid_entry = server->ops->find_mid(server, buf); - if (!mid_entry || !mid_entry->receive) - length = standard_receive3(server, mid_entry); - else - length = mid_entry->receive(server, mid_entry); + if (!mid_entry || !mid_entry->receive) + length = standard_receive3(server, mid_entry); + else + length = mid_entry->receive(server, mid_entry); + } if (length < 0) continue; @@ -2154,7 +2170,7 @@ cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect) server->tcpStatus = CifsExiting; spin_unlock(&GlobalMid_Lock); - cifs_crypto_shash_release(server); + cifs_crypto_secmech_release(server); cifs_fscache_release_client_cookie(server); kfree(server->session_key.response); @@ -2273,7 +2289,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) return tcp_ses; out_err_crypto_release: - cifs_crypto_shash_release(tcp_ses); + cifs_crypto_secmech_release(tcp_ses); put_net(cifs_net_ns(tcp_ses)); @@ -2614,12 +2630,18 @@ get_ses_fail: return ERR_PTR(rc); } -static int match_tcon(struct cifs_tcon *tcon, const char *unc) +static int match_tcon(struct cifs_tcon *tcon, struct smb_vol *volume_info) { if (tcon->tidStatus == CifsExiting) return 0; - if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) + if (strncmp(tcon->treeName, volume_info->UNC, MAX_TREE_SIZE)) return 0; + if (tcon->seal != volume_info->seal) + return 0; +#ifdef CONFIG_CIFS_SMB2 + if (tcon->snapshot_time != volume_info->snapshot_time) + return 0; +#endif /* CONFIG_CIFS_SMB2 */ return 1; } @@ -2632,14 +2654,8 @@ cifs_find_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) spin_lock(&cifs_tcp_ses_lock); list_for_each(tmp, &ses->tcon_list) { tcon = list_entry(tmp, struct cifs_tcon, tcon_list); - if (!match_tcon(tcon, volume_info->UNC)) - continue; - -#ifdef CONFIG_CIFS_SMB2 - if (tcon->snapshot_time != volume_info->snapshot_time) + if (!match_tcon(tcon, volume_info)) continue; -#endif /* CONFIG_CIFS_SMB2 */ - ++tcon->tc_count; spin_unlock(&cifs_tcp_ses_lock); return tcon; @@ -2685,8 +2701,6 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) cifs_dbg(FYI, "Found match on UNC path\n"); /* existing tcon already has a reference */ cifs_put_smb_ses(ses); - if (tcon->seal != volume_info->seal) - cifs_dbg(VFS, "transport encryption setting conflicts with existing tid\n"); return tcon; } @@ -2742,7 +2756,6 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; cifs_dbg(FYI, "DFS disabled (%d)\n", tcon->Flags); } - tcon->seal = volume_info->seal; tcon->use_persistent = false; /* check if SMB2 or later, CIFS does not support persistent handles */ if (volume_info->persistent) { @@ -2779,6 +2792,24 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) tcon->use_resilient = true; } + if (volume_info->seal) { + if (ses->server->vals->protocol_id == 0) { + cifs_dbg(VFS, + "SMB3 or later required for encryption\n"); + rc = -EOPNOTSUPP; + goto out_fail; +#ifdef CONFIG_CIFS_SMB2 + } else if (tcon->ses->server->capabilities & + SMB2_GLOBAL_CAP_ENCRYPTION) + tcon->seal = true; + else { + cifs_dbg(VFS, "Encryption is not supported on share\n"); + rc = -EOPNOTSUPP; + goto out_fail; +#endif /* CONFIG_CIFS_SMB2 */ + } + } + /* * We can have only one retry value for a connection to a share so for * resources mounted more than once to the same server share the last @@ -2910,7 +2941,7 @@ cifs_match_super(struct super_block *sb, void *data) if (!match_server(tcp_srv, volume_info) || !match_session(ses, volume_info) || - !match_tcon(tcon, volume_info->UNC) || + !match_tcon(tcon, volume_info) || !match_prepath(sb, mnt_data)) { rc = 0; goto out; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 18a1e1d6671f..98dc842e7245 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2884,7 +2884,15 @@ cifs_readdata_to_iov(struct cifs_readdata *rdata, struct iov_iter *iter) for (i = 0; i < rdata->nr_pages; i++) { struct page *page = rdata->pages[i]; size_t copy = min_t(size_t, remaining, PAGE_SIZE); - size_t written = copy_page_to_iter(page, 0, copy, iter); + size_t written; + + if (unlikely(iter->type & ITER_PIPE)) { + void *addr = kmap_atomic(page); + + written = copy_to_iter(addr, copy, iter); + kunmap_atomic(addr); + } else + written = copy_page_to_iter(page, 0, copy, iter); remaining -= written; if (written < copy && iov_iter_count(iter) > 0) break; @@ -2903,8 +2911,9 @@ cifs_uncached_readv_complete(struct work_struct *work) } static int -cifs_uncached_read_into_pages(struct TCP_Server_Info *server, - struct cifs_readdata *rdata, unsigned int len) +uncached_fill_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, struct iov_iter *iter, + unsigned int len) { int result = 0; unsigned int i; @@ -2933,7 +2942,10 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server, rdata->tailsz = len; len = 0; } - result = cifs_read_page_from_socket(server, page, n); + if (iter) + result = copy_page_from_iter(page, 0, n, iter); + else + result = cifs_read_page_from_socket(server, page, n); if (result < 0) break; @@ -2945,6 +2957,21 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server, } static int +cifs_uncached_read_into_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, unsigned int len) +{ + return uncached_fill_pages(server, rdata, NULL, len); +} + +static int +cifs_uncached_copy_into_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, + struct iov_iter *iter) +{ + return uncached_fill_pages(server, rdata, iter, iter->count); +} + +static int cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file, struct cifs_sb_info *cifs_sb, struct list_head *rdata_list) { @@ -2991,6 +3018,7 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file, rdata->pid = pid; rdata->pagesz = PAGE_SIZE; rdata->read_into_pages = cifs_uncached_read_into_pages; + rdata->copy_into_pages = cifs_uncached_copy_into_pages; rdata->credits = credits; if (!rdata->cfile->invalidHandle || @@ -3341,8 +3369,9 @@ cifs_readv_complete(struct work_struct *work) } static int -cifs_readpages_read_into_pages(struct TCP_Server_Info *server, - struct cifs_readdata *rdata, unsigned int len) +readpages_fill_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, struct iov_iter *iter, + unsigned int len) { int result = 0; unsigned int i; @@ -3396,7 +3425,10 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server, continue; } - result = cifs_read_page_from_socket(server, page, n); + if (iter) + result = copy_page_from_iter(page, 0, n, iter); + else + result = cifs_read_page_from_socket(server, page, n); if (result < 0) break; @@ -3408,6 +3440,21 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server, } static int +cifs_readpages_read_into_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, unsigned int len) +{ + return readpages_fill_pages(server, rdata, NULL, len); +} + +static int +cifs_readpages_copy_into_pages(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, + struct iov_iter *iter) +{ + return readpages_fill_pages(server, rdata, iter, iter->count); +} + +static int readpages_get_pages(struct address_space *mapping, struct list_head *page_list, unsigned int rsize, struct list_head *tmplist, unsigned int *nr_pages, loff_t *offset, unsigned int *bytes) @@ -3561,6 +3608,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, rdata->pid = pid; rdata->pagesz = PAGE_SIZE; rdata->read_into_pages = cifs_readpages_read_into_pages; + rdata->copy_into_pages = cifs_readpages_copy_into_pages; rdata->credits = credits; list_for_each_entry_safe(page, tpage, &tmplist, lru) { diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 538d9b55699a..dcbcc927399a 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -344,13 +344,12 @@ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, /* BB is NTLMV2 session security format easier to use here? */ flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | - NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC; - if (ses->server->sign) { + NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC | + NTLMSSP_NEGOTIATE_SEAL; + if (ses->server->sign) flags |= NTLMSSP_NEGOTIATE_SIGN; - if (!ses->server->session_estab || - ses->ntlmssp->sesskey_per_smbsess) - flags |= NTLMSSP_NEGOTIATE_KEY_XCH; - } + if (!ses->server->session_estab || ses->ntlmssp->sesskey_per_smbsess) + flags |= NTLMSSP_NEGOTIATE_KEY_XCH; sec_blob->NegotiateFlags = cpu_to_le32(flags); @@ -407,13 +406,12 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer, flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | - NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC; - if (ses->server->sign) { + NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC | + NTLMSSP_NEGOTIATE_SEAL; + if (ses->server->sign) flags |= NTLMSSP_NEGOTIATE_SIGN; - if (!ses->server->session_estab || - ses->ntlmssp->sesskey_per_smbsess) - flags |= NTLMSSP_NEGOTIATE_KEY_XCH; - } + if (!ses->server->session_estab || ses->ntlmssp->sesskey_per_smbsess) + flags |= NTLMSSP_NEGOTIATE_KEY_XCH; tmp = *pbuffer + sizeof(AUTHENTICATE_MESSAGE); sec_blob->NegotiateFlags = cpu_to_le32(flags); @@ -652,6 +650,7 @@ sess_sendreceive(struct sess_data *sess_data) int rc; struct smb_hdr *smb_buf = (struct smb_hdr *) sess_data->iov[0].iov_base; __u16 count; + struct kvec rsp_iov = { NULL, 0 }; count = sess_data->iov[1].iov_len + sess_data->iov[2].iov_len; smb_buf->smb_buf_length = @@ -661,7 +660,9 @@ sess_sendreceive(struct sess_data *sess_data) rc = SendReceive2(sess_data->xid, sess_data->ses, sess_data->iov, 3 /* num_iovecs */, &sess_data->buf0_type, - CIFS_LOG_ERROR); + CIFS_LOG_ERROR, &rsp_iov); + cifs_small_buf_release(sess_data->iov[0].iov_base); + memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec)); return rc; } diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index fc537c29044e..67a987e4d026 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -36,11 +36,11 @@ * SMB_COM_NT_CANCEL request and then sends it. */ static int -send_nt_cancel(struct TCP_Server_Info *server, void *buf, +send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, struct mid_q_entry *mid) { int rc = 0; - struct smb_hdr *in_buf = (struct smb_hdr *)buf; + struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base; /* -4 for RFC1001 length and +2 for BCC field */ in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2); diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h index 0ffa18094335..401a5d856636 100644 --- a/fs/cifs/smb2glob.h +++ b/fs/cifs/smb2glob.h @@ -61,4 +61,9 @@ /* Maximum buffer size value we can send with 1 credit */ #define SMB2_MAX_BUFFER_SIZE 65536 +static inline struct smb2_sync_hdr *get_sync_hdr(void *buf) +{ + return &(((struct smb2_hdr *)buf)->sync_hdr); +} + #endif /* _SMB2_GLOB_H */ diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c index 8257a5a97cc0..3030a9dfb0dd 100644 --- a/fs/cifs/smb2maperror.c +++ b/fs/cifs/smb2maperror.c @@ -26,6 +26,7 @@ #include "smb2pdu.h" #include "smb2proto.h" #include "smb2status.h" +#include "smb2glob.h" struct status_to_posix_error { __le32 smb2_status; @@ -2449,10 +2450,10 @@ smb2_print_status(__le32 status) int map_smb2_to_linux_error(char *buf, bool log_err) { - struct smb2_hdr *hdr = (struct smb2_hdr *)buf; + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); unsigned int i; int rc = -EIO; - __le32 smb2err = hdr->Status; + __le32 smb2err = shdr->Status; if (smb2err == 0) return 0; diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index 3d383489b9cf..fd516ea8b8f8 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -28,31 +28,32 @@ #include "cifs_debug.h" #include "cifs_unicode.h" #include "smb2status.h" +#include "smb2glob.h" static int -check_smb2_hdr(struct smb2_hdr *hdr, __u64 mid) +check_smb2_hdr(struct smb2_sync_hdr *shdr, __u64 mid) { - __u64 wire_mid = le64_to_cpu(hdr->MessageId); + __u64 wire_mid = le64_to_cpu(shdr->MessageId); /* * Make sure that this really is an SMB, that it is a response, * and that the message ids match. */ - if ((hdr->ProtocolId == SMB2_PROTO_NUMBER) && + if ((shdr->ProtocolId == SMB2_PROTO_NUMBER) && (mid == wire_mid)) { - if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) + if (shdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) return 0; else { /* only one valid case where server sends us request */ - if (hdr->Command == SMB2_OPLOCK_BREAK) + if (shdr->Command == SMB2_OPLOCK_BREAK) return 0; else cifs_dbg(VFS, "Received Request not response\n"); } } else { /* bad signature or mid */ - if (hdr->ProtocolId != SMB2_PROTO_NUMBER) + if (shdr->ProtocolId != SMB2_PROTO_NUMBER) cifs_dbg(VFS, "Bad protocol string signature header %x\n", - le32_to_cpu(hdr->ProtocolId)); + le32_to_cpu(shdr->ProtocolId)); if (mid != wire_mid) cifs_dbg(VFS, "Mids do not match: %llu and %llu\n", mid, wire_mid); @@ -95,8 +96,9 @@ static const __le16 smb2_rsp_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = { int smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr) { - struct smb2_hdr *hdr = (struct smb2_hdr *)buf; - struct smb2_pdu *pdu = (struct smb2_pdu *)hdr; + struct smb2_pdu *pdu = (struct smb2_pdu *)buf; + struct smb2_hdr *hdr = &pdu->hdr; + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); __u64 mid; __u32 len = get_rfc1002_length(buf); __u32 clc_len; /* calculated length */ @@ -111,7 +113,7 @@ smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr) * ie Validate the wct via smb2_struct_sizes table above */ - if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { + if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { struct smb2_transform_hdr *thdr = (struct smb2_transform_hdr *)buf; struct cifs_ses *ses = NULL; @@ -133,10 +135,10 @@ smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr) } } - - mid = le64_to_cpu(hdr->MessageId); + mid = le64_to_cpu(shdr->MessageId); if (length < sizeof(struct smb2_pdu)) { - if ((length >= sizeof(struct smb2_hdr)) && (hdr->Status != 0)) { + if ((length >= sizeof(struct smb2_hdr)) + && (shdr->Status != 0)) { pdu->StructureSize2 = 0; /* * As with SMB/CIFS, on some error cases servers may @@ -154,29 +156,30 @@ smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr) return 1; } - if (check_smb2_hdr(hdr, mid)) + if (check_smb2_hdr(shdr, mid)) return 1; - if (hdr->StructureSize != SMB2_HEADER_STRUCTURE_SIZE) { + if (shdr->StructureSize != SMB2_HEADER_STRUCTURE_SIZE) { cifs_dbg(VFS, "Illegal structure size %u\n", - le16_to_cpu(hdr->StructureSize)); + le16_to_cpu(shdr->StructureSize)); return 1; } - command = le16_to_cpu(hdr->Command); + command = le16_to_cpu(shdr->Command); if (command >= NUMBER_OF_SMB2_COMMANDS) { cifs_dbg(VFS, "Illegal SMB2 command %d\n", command); return 1; } if (smb2_rsp_struct_sizes[command] != pdu->StructureSize2) { - if (command != SMB2_OPLOCK_BREAK_HE && (hdr->Status == 0 || + if (command != SMB2_OPLOCK_BREAK_HE && (shdr->Status == 0 || pdu->StructureSize2 != SMB2_ERROR_STRUCTURE_SIZE2)) { /* error packets have 9 byte structure size */ cifs_dbg(VFS, "Illegal response size %u for command %d\n", le16_to_cpu(pdu->StructureSize2), command); return 1; - } else if (command == SMB2_OPLOCK_BREAK_HE && (hdr->Status == 0) + } else if (command == SMB2_OPLOCK_BREAK_HE + && (shdr->Status == 0) && (le16_to_cpu(pdu->StructureSize2) != 44) && (le16_to_cpu(pdu->StructureSize2) != 36)) { /* special case for SMB2.1 lease break message */ @@ -199,7 +202,7 @@ smb2_check_message(char *buf, unsigned int length, struct TCP_Server_Info *srvr) clc_len, 4 + len, mid); /* create failed on symlink */ if (command == SMB2_CREATE_HE && - hdr->Status == STATUS_STOPPED_ON_SYMLINK) + shdr->Status == STATUS_STOPPED_ON_SYMLINK) return 0; /* Windows 7 server returns 24 bytes more */ if (clc_len + 20 == len && command == SMB2_OPLOCK_BREAK_HE) @@ -261,11 +264,12 @@ static const bool has_smb2_data_area[NUMBER_OF_SMB2_COMMANDS] = { char * smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr) { + struct smb2_sync_hdr *shdr = get_sync_hdr(hdr); *off = 0; *len = 0; /* error responses do not have data area */ - if (hdr->Status && hdr->Status != STATUS_MORE_PROCESSING_REQUIRED && + if (shdr->Status && shdr->Status != STATUS_MORE_PROCESSING_REQUIRED && (((struct smb2_err_rsp *)hdr)->StructureSize) == SMB2_ERROR_STRUCTURE_SIZE2) return NULL; @@ -275,7 +279,7 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr) * of the data buffer offset and data buffer length for the particular * command. */ - switch (hdr->Command) { + switch (shdr->Command) { case SMB2_NEGOTIATE: *off = le16_to_cpu( ((struct smb2_negotiate_rsp *)hdr)->SecurityBufferOffset); @@ -346,7 +350,7 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr) /* return pointer to beginning of data area, ie offset from SMB start */ if ((*off != 0) && (*len != 0)) - return (char *)(&hdr->ProtocolId) + *off; + return (char *)shdr + *off; else return NULL; } @@ -358,12 +362,13 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr) unsigned int smb2_calc_size(void *buf) { - struct smb2_hdr *hdr = (struct smb2_hdr *)buf; - struct smb2_pdu *pdu = (struct smb2_pdu *)hdr; + struct smb2_pdu *pdu = (struct smb2_pdu *)buf; + struct smb2_hdr *hdr = &pdu->hdr; + struct smb2_sync_hdr *shdr = get_sync_hdr(hdr); int offset; /* the offset from the beginning of SMB to data area */ int data_length; /* the length of the variable length data area */ /* Structure Size has already been checked to make sure it is 64 */ - int len = 4 + le16_to_cpu(pdu->hdr.StructureSize); + int len = 4 + le16_to_cpu(shdr->StructureSize); /* * StructureSize2, ie length of fixed parameter area has already @@ -371,7 +376,7 @@ smb2_calc_size(void *buf) */ len += le16_to_cpu(pdu->StructureSize2); - if (has_smb2_data_area[le16_to_cpu(hdr->Command)] == false) + if (has_smb2_data_area[le16_to_cpu(shdr->Command)] == false) goto calc_size_exit; smb2_get_data_area_len(&offset, &data_length, hdr); @@ -582,7 +587,7 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) cifs_dbg(FYI, "Checking for oplock break\n"); - if (rsp->hdr.Command != SMB2_OPLOCK_BREAK) + if (rsp->hdr.sync_hdr.Command != SMB2_OPLOCK_BREAK) return false; if (rsp->StructureSize != diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 5d456ebb3813..a44b4dbe4aae 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -20,6 +20,8 @@ #include <linux/pagemap.h> #include <linux/vfs.h> #include <linux/falloc.h> +#include <linux/scatterlist.h> +#include <crypto/aead.h> #include "cifsglob.h" #include "smb2pdu.h" #include "smb2proto.h" @@ -119,7 +121,9 @@ smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) static unsigned int smb2_get_credits(struct mid_q_entry *mid) { - return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest); + struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf); + + return le16_to_cpu(shdr->CreditRequest); } static int @@ -184,10 +188,10 @@ static struct mid_q_entry * smb2_find_mid(struct TCP_Server_Info *server, char *buf) { struct mid_q_entry *mid; - struct smb2_hdr *hdr = (struct smb2_hdr *)buf; - __u64 wire_mid = le64_to_cpu(hdr->MessageId); + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); + __u64 wire_mid = le64_to_cpu(shdr->MessageId); - if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { + if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { cifs_dbg(VFS, "encrypted frame parsing not supported yet"); return NULL; } @@ -196,7 +200,7 @@ smb2_find_mid(struct TCP_Server_Info *server, char *buf) list_for_each_entry(mid, &server->pending_mid_q, qhead) { if ((mid->mid == wire_mid) && (mid->mid_state == MID_REQUEST_SUBMITTED) && - (mid->command == hdr->Command)) { + (mid->command == shdr->Command)) { spin_unlock(&GlobalMid_Lock); return mid; } @@ -209,12 +213,12 @@ static void smb2_dump_detail(void *buf) { #ifdef CONFIG_CIFS_DEBUG2 - struct smb2_hdr *smb = (struct smb2_hdr *)buf; + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", - smb->Command, smb->Status, smb->Flags, smb->MessageId, - smb->ProcessId); - cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb)); + shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, + shdr->ProcessId); + cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf)); #endif } @@ -1002,14 +1006,14 @@ smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, static bool smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length) { - struct smb2_hdr *hdr = (struct smb2_hdr *)buf; + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); - if (hdr->Status != STATUS_PENDING) + if (shdr->Status != STATUS_PENDING) return false; if (!length) { spin_lock(&server->req_lock); - server->credits += le16_to_cpu(hdr->CreditRequest); + server->credits += le16_to_cpu(shdr->CreditRequest); spin_unlock(&server->req_lock); wake_up(&server->request_q); } @@ -1545,6 +1549,633 @@ smb2_dir_needs_close(struct cifsFileInfo *cfile) return !cfile->invalidHandle; } +static void +fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq) +{ + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base; + unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base); + + memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); + tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; + tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); + tr_hdr->Flags = cpu_to_le16(0x01); + get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE); + memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); + inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4); + inc_rfc1001_len(tr_hdr, orig_len); +} + +static struct scatterlist * +init_sg(struct smb_rqst *rqst, u8 *sign) +{ + unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1; + unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; + struct scatterlist *sg; + unsigned int i; + unsigned int j; + + sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); + if (!sg) + return NULL; + + sg_init_table(sg, sg_len); + sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len); + for (i = 1; i < rqst->rq_nvec; i++) + sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base, + rqst->rq_iov[i].iov_len); + for (j = 0; i < sg_len - 1; i++, j++) { + unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz + : rqst->rq_tailsz; + sg_set_page(&sg[i], rqst->rq_pages[j], len, 0); + } + sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE); + return sg; +} + +struct cifs_crypt_result { + int err; + struct completion completion; +}; + +static void cifs_crypt_complete(struct crypto_async_request *req, int err) +{ + struct cifs_crypt_result *res = req->data; + + if (err == -EINPROGRESS) + return; + + res->err = err; + complete(&res->completion); +} + +/* + * Encrypt or decrypt @rqst message. @rqst has the following format: + * iov[0] - transform header (associate data), + * iov[1-N] and pages - data to encrypt. + * On success return encrypted data in iov[1-N] and pages, leave iov[0] + * untouched. + */ +static int +crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc) +{ + struct smb2_transform_hdr *tr_hdr = + (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base; + unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; + struct cifs_ses *ses; + int rc = 0; + struct scatterlist *sg; + u8 sign[SMB2_SIGNATURE_SIZE] = {}; + struct aead_request *req; + char *iv; + unsigned int iv_len; + struct cifs_crypt_result result = {0, }; + struct crypto_aead *tfm; + unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); + + init_completion(&result.completion); + + ses = smb2_find_smb_ses(server, tr_hdr->SessionId); + if (!ses) { + cifs_dbg(VFS, "%s: Could not find session\n", __func__); + return 0; + } + + rc = smb3_crypto_aead_allocate(server); + if (rc) { + cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__); + return rc; + } + + tfm = enc ? server->secmech.ccmaesencrypt : + server->secmech.ccmaesdecrypt; + rc = crypto_aead_setkey(tfm, enc ? ses->smb3encryptionkey : + ses->smb3decryptionkey, SMB3_SIGN_KEY_SIZE); + if (rc) { + cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); + return rc; + } + + rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); + if (rc) { + cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); + return rc; + } + + req = aead_request_alloc(tfm, GFP_KERNEL); + if (!req) { + cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__); + return -ENOMEM; + } + + if (!enc) { + memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); + crypt_len += SMB2_SIGNATURE_SIZE; + } + + sg = init_sg(rqst, sign); + if (!sg) { + cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc); + goto free_req; + } + + iv_len = crypto_aead_ivsize(tfm); + iv = kzalloc(iv_len, GFP_KERNEL); + if (!iv) { + cifs_dbg(VFS, "%s: Failed to alloc IV", __func__); + goto free_sg; + } + iv[0] = 3; + memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE); + + aead_request_set_crypt(req, sg, sg, crypt_len, iv); + aead_request_set_ad(req, assoc_data_len); + + aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, + cifs_crypt_complete, &result); + + rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req); + + if (rc == -EINPROGRESS || rc == -EBUSY) { + wait_for_completion(&result.completion); + rc = result.err; + } + + if (!rc && enc) + memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); + + kfree(iv); +free_sg: + kfree(sg); +free_req: + kfree(req); + return rc; +} + +static int +smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq, + struct smb_rqst *old_rq) +{ + struct kvec *iov; + struct page **pages; + struct smb2_transform_hdr *tr_hdr; + unsigned int npages = old_rq->rq_npages; + int i; + int rc = -ENOMEM; + + pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); + if (!pages) + return rc; + + new_rq->rq_pages = pages; + new_rq->rq_npages = old_rq->rq_npages; + new_rq->rq_pagesz = old_rq->rq_pagesz; + new_rq->rq_tailsz = old_rq->rq_tailsz; + + for (i = 0; i < npages; i++) { + pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); + if (!pages[i]) + goto err_free_pages; + } + + iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL); + if (!iov) + goto err_free_pages; + + /* copy all iovs from the old except the 1st one (rfc1002 length) */ + memcpy(&iov[1], &old_rq->rq_iov[1], + sizeof(struct kvec) * (old_rq->rq_nvec - 1)); + new_rq->rq_iov = iov; + new_rq->rq_nvec = old_rq->rq_nvec; + + tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL); + if (!tr_hdr) + goto err_free_iov; + + /* fill the 1st iov with a transform header */ + fill_transform_hdr(tr_hdr, old_rq); + new_rq->rq_iov[0].iov_base = tr_hdr; + new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr); + + /* copy pages form the old */ + for (i = 0; i < npages; i++) { + char *dst = kmap(new_rq->rq_pages[i]); + char *src = kmap(old_rq->rq_pages[i]); + unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz : + new_rq->rq_tailsz; + memcpy(dst, src, len); + kunmap(new_rq->rq_pages[i]); + kunmap(old_rq->rq_pages[i]); + } + + rc = crypt_message(server, new_rq, 1); + cifs_dbg(FYI, "encrypt message returned %d", rc); + if (rc) + goto err_free_tr_hdr; + + return rc; + +err_free_tr_hdr: + kfree(tr_hdr); +err_free_iov: + kfree(iov); +err_free_pages: + for (i = i - 1; i >= 0; i--) + put_page(pages[i]); + kfree(pages); + return rc; +} + +static void +smb3_free_transform_rq(struct smb_rqst *rqst) +{ + int i = rqst->rq_npages - 1; + + for (; i >= 0; i--) + put_page(rqst->rq_pages[i]); + kfree(rqst->rq_pages); + /* free transform header */ + kfree(rqst->rq_iov[0].iov_base); + kfree(rqst->rq_iov); +} + +static int +smb3_is_transform_hdr(void *buf) +{ + struct smb2_transform_hdr *trhdr = buf; + + return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; +} + +static int +decrypt_raw_data(struct TCP_Server_Info *server, char *buf, + unsigned int buf_data_size, struct page **pages, + unsigned int npages, unsigned int page_data_size) +{ + struct kvec iov[2]; + struct smb_rqst rqst = {NULL}; + struct smb2_hdr *hdr; + int rc; + + iov[0].iov_base = buf; + iov[0].iov_len = sizeof(struct smb2_transform_hdr); + iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); + iov[1].iov_len = buf_data_size; + + rqst.rq_iov = iov; + rqst.rq_nvec = 2; + rqst.rq_pages = pages; + rqst.rq_npages = npages; + rqst.rq_pagesz = PAGE_SIZE; + rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; + + rc = crypt_message(server, &rqst, 0); + cifs_dbg(FYI, "decrypt message returned %d\n", rc); + + if (rc) + return rc; + + memmove(buf + 4, iov[1].iov_base, buf_data_size); + hdr = (struct smb2_hdr *)buf; + hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size); + server->total_read = buf_data_size + page_data_size + 4; + + return rc; +} + +static int +read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, + unsigned int npages, unsigned int len) +{ + int i; + int length; + + for (i = 0; i < npages; i++) { + struct page *page = pages[i]; + size_t n; + + n = len; + if (len >= PAGE_SIZE) { + /* enough data to fill the page */ + n = PAGE_SIZE; + len -= n; + } else { + zero_user(page, len, PAGE_SIZE - len); + len = 0; + } + length = cifs_read_page_from_socket(server, page, n); + if (length < 0) + return length; + server->total_read += length; + } + + return 0; +} + +static int +init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, + unsigned int cur_off, struct bio_vec **page_vec) +{ + struct bio_vec *bvec; + int i; + + bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); + if (!bvec) + return -ENOMEM; + + for (i = 0; i < npages; i++) { + bvec[i].bv_page = pages[i]; + bvec[i].bv_offset = (i == 0) ? cur_off : 0; + bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); + data_size -= bvec[i].bv_len; + } + + if (data_size != 0) { + cifs_dbg(VFS, "%s: something went wrong\n", __func__); + kfree(bvec); + return -EIO; + } + + *page_vec = bvec; + return 0; +} + +static int +handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, + char *buf, unsigned int buf_len, struct page **pages, + unsigned int npages, unsigned int page_data_size) +{ + unsigned int data_offset; + unsigned int data_len; + unsigned int cur_off; + unsigned int cur_page_idx; + unsigned int pad_len; + struct cifs_readdata *rdata = mid->callback_data; + struct smb2_sync_hdr *shdr = get_sync_hdr(buf); + struct bio_vec *bvec = NULL; + struct iov_iter iter; + struct kvec iov; + int length; + + if (shdr->Command != SMB2_READ) { + cifs_dbg(VFS, "only big read responses are supported\n"); + return -ENOTSUPP; + } + + if (server->ops->is_status_pending && + server->ops->is_status_pending(buf, server, 0)) + return -1; + + rdata->result = server->ops->map_error(buf, false); + if (rdata->result != 0) { + cifs_dbg(FYI, "%s: server returned error %d\n", + __func__, rdata->result); + dequeue_mid(mid, rdata->result); + return 0; + } + + data_offset = server->ops->read_data_offset(buf) + 4; + data_len = server->ops->read_data_length(buf); + + if (data_offset < server->vals->read_rsp_size) { + /* + * win2k8 sometimes sends an offset of 0 when the read + * is beyond the EOF. Treat it as if the data starts just after + * the header. + */ + cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", + __func__, data_offset); + data_offset = server->vals->read_rsp_size; + } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { + /* data_offset is beyond the end of smallbuf */ + cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", + __func__, data_offset); + rdata->result = -EIO; + dequeue_mid(mid, rdata->result); + return 0; + } + + pad_len = data_offset - server->vals->read_rsp_size; + + if (buf_len <= data_offset) { + /* read response payload is in pages */ + cur_page_idx = pad_len / PAGE_SIZE; + cur_off = pad_len % PAGE_SIZE; + + if (cur_page_idx != 0) { + /* data offset is beyond the 1st page of response */ + cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", + __func__, data_offset); + rdata->result = -EIO; + dequeue_mid(mid, rdata->result); + return 0; + } + + if (data_len > page_data_size - pad_len) { + /* data_len is corrupt -- discard frame */ + rdata->result = -EIO; + dequeue_mid(mid, rdata->result); + return 0; + } + + rdata->result = init_read_bvec(pages, npages, page_data_size, + cur_off, &bvec); + if (rdata->result != 0) { + dequeue_mid(mid, rdata->result); + return 0; + } + + iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len); + } else if (buf_len >= data_offset + data_len) { + /* read response payload is in buf */ + WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); + iov.iov_base = buf + data_offset; + iov.iov_len = data_len; + iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len); + } else { + /* read response payload cannot be in both buf and pages */ + WARN_ONCE(1, "buf can not contain only a part of read data"); + rdata->result = -EIO; + dequeue_mid(mid, rdata->result); + return 0; + } + + /* set up first iov for signature check */ + rdata->iov[0].iov_base = buf; + rdata->iov[0].iov_len = 4; + rdata->iov[1].iov_base = buf + 4; + rdata->iov[1].iov_len = server->vals->read_rsp_size - 4; + cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", + rdata->iov[0].iov_base, server->vals->read_rsp_size); + + length = rdata->copy_into_pages(server, rdata, &iter); + + kfree(bvec); + + if (length < 0) + return length; + + dequeue_mid(mid, false); + return length; +} + +static int +receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid) +{ + char *buf = server->smallbuf; + struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; + unsigned int npages; + struct page **pages; + unsigned int len; + unsigned int buflen = get_rfc1002_length(buf) + 4; + int rc; + int i = 0; + + len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 + + sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; + + rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); + if (rc < 0) + return rc; + server->total_read += rc; + + len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 - + server->vals->read_rsp_size; + npages = DIV_ROUND_UP(len, PAGE_SIZE); + + pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); + if (!pages) { + rc = -ENOMEM; + goto discard_data; + } + + for (; i < npages; i++) { + pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); + if (!pages[i]) { + rc = -ENOMEM; + goto discard_data; + } + } + + /* read read data into pages */ + rc = read_data_into_pages(server, pages, npages, len); + if (rc) + goto free_pages; + + rc = cifs_discard_remaining_data(server); + if (rc) + goto free_pages; + + rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4, + pages, npages, len); + if (rc) + goto free_pages; + + *mid = smb2_find_mid(server, buf); + if (*mid == NULL) + cifs_dbg(FYI, "mid not found\n"); + else { + cifs_dbg(FYI, "mid found\n"); + (*mid)->decrypted = true; + rc = handle_read_data(server, *mid, buf, + server->vals->read_rsp_size, + pages, npages, len); + } + +free_pages: + for (i = i - 1; i >= 0; i--) + put_page(pages[i]); + kfree(pages); + return rc; +discard_data: + cifs_discard_remaining_data(server); + goto free_pages; +} + +static int +receive_encrypted_standard(struct TCP_Server_Info *server, + struct mid_q_entry **mid) +{ + int length; + char *buf = server->smallbuf; + unsigned int pdu_length = get_rfc1002_length(buf); + unsigned int buf_size; + struct mid_q_entry *mid_entry; + + /* switch to large buffer if too big for a small one */ + if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) { + server->large_buf = true; + memcpy(server->bigbuf, buf, server->total_read); + buf = server->bigbuf; + } + + /* now read the rest */ + length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, + pdu_length - HEADER_SIZE(server) + 1 + 4); + if (length < 0) + return length; + server->total_read += length; + + buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr); + length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0); + if (length) + return length; + + mid_entry = smb2_find_mid(server, buf); + if (mid_entry == NULL) + cifs_dbg(FYI, "mid not found\n"); + else { + cifs_dbg(FYI, "mid found\n"); + mid_entry->decrypted = true; + } + + *mid = mid_entry; + + if (mid_entry && mid_entry->handle) + return mid_entry->handle(server, mid_entry); + + return cifs_handle_standard(server, mid_entry); +} + +static int +smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid) +{ + char *buf = server->smallbuf; + unsigned int pdu_length = get_rfc1002_length(buf); + struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; + unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); + + if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) + + sizeof(struct smb2_sync_hdr)) { + cifs_dbg(VFS, "Transform message is too small (%u)\n", + pdu_length); + cifs_reconnect(server); + wake_up(&server->response_q); + return -ECONNABORTED; + } + + if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) { + cifs_dbg(VFS, "Transform message is broken\n"); + cifs_reconnect(server); + wake_up(&server->response_q); + return -ECONNABORTED; + } + + if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) + return receive_encrypted_read(server, mid); + + return receive_encrypted_standard(server, mid); +} + +int +smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) +{ + char *buf = server->large_buf ? server->bigbuf : server->smallbuf; + + return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4, + NULL, 0, 0); +} + struct smb_version_operations smb20_operations = { .compare_fids = smb2_compare_fids, .setup_request = smb2_setup_request, @@ -1791,6 +2422,10 @@ struct smb_version_operations smb30_operations = { .dir_needs_close = smb2_dir_needs_close, .fallocate = smb3_fallocate, .enum_snapshots = smb3_enum_snapshots, + .init_transform_rq = smb3_init_transform_rq, + .free_transform_rq = smb3_free_transform_rq, + .is_transform_hdr = smb3_is_transform_hdr, + .receive_transform = smb3_receive_transform, }; #ifdef CONFIG_CIFS_SMB311 @@ -1879,6 +2514,10 @@ struct smb_version_operations smb311_operations = { .dir_needs_close = smb2_dir_needs_close, .fallocate = smb3_fallocate, .enum_snapshots = smb3_enum_snapshots, + .init_transform_rq = smb3_init_transform_rq, + .free_transform_rq = smb3_free_transform_rq, + .is_transform_hdr = smb3_is_transform_hdr, + .receive_transform = smb3_receive_transform, }; #endif /* CIFS_SMB311 */ diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 87457227812c..ad83b3db2840 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -77,45 +77,42 @@ static const int smb2_req_struct_sizes[NUMBER_OF_SMB2_COMMANDS] = { /* SMB2_OPLOCK_BREAK */ 24 /* BB this is 36 for LEASE_BREAK variant */ }; +static int encryption_required(const struct cifs_tcon *tcon) +{ + if (!tcon) + return 0; + if ((tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || + (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) + return 1; + if (tcon->seal && + (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) + return 1; + return 0; +} static void -smb2_hdr_assemble(struct smb2_hdr *hdr, __le16 smb2_cmd /* command */ , +smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd, const struct cifs_tcon *tcon) { - struct smb2_pdu *pdu = (struct smb2_pdu *)hdr; - char *temp = (char *)hdr; - /* lookup word count ie StructureSize from table */ - __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_cmd)]; - - /* - * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of - * largest operations (Create) - */ - memset(temp, 0, 256); - - /* Note this is only network field converted to big endian */ - hdr->smb2_buf_length = cpu_to_be32(parmsize + sizeof(struct smb2_hdr) - - 4 /* RFC 1001 length field itself not counted */); - - hdr->ProtocolId = SMB2_PROTO_NUMBER; - hdr->StructureSize = cpu_to_le16(64); - hdr->Command = smb2_cmd; + shdr->ProtocolId = SMB2_PROTO_NUMBER; + shdr->StructureSize = cpu_to_le16(64); + shdr->Command = smb2_cmd; if (tcon && tcon->ses && tcon->ses->server) { struct TCP_Server_Info *server = tcon->ses->server; spin_lock(&server->req_lock); /* Request up to 2 credits but don't go over the limit. */ if (server->credits >= server->max_credits) - hdr->CreditRequest = cpu_to_le16(0); + shdr->CreditRequest = cpu_to_le16(0); else - hdr->CreditRequest = cpu_to_le16( + shdr->CreditRequest = cpu_to_le16( min_t(int, server->max_credits - server->credits, 2)); spin_unlock(&server->req_lock); } else { - hdr->CreditRequest = cpu_to_le16(2); + shdr->CreditRequest = cpu_to_le16(2); } - hdr->ProcessId = cpu_to_le32((__u16)current->tgid); + shdr->ProcessId = cpu_to_le32((__u16)current->tgid); if (!tcon) goto out; @@ -124,13 +121,13 @@ smb2_hdr_assemble(struct smb2_hdr *hdr, __le16 smb2_cmd /* command */ , /* See sections 2.2.4 and 3.2.4.1.5 of MS-SMB2 */ if ((tcon->ses) && (tcon->ses->server) && (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) - hdr->CreditCharge = cpu_to_le16(1); + shdr->CreditCharge = cpu_to_le16(1); /* else CreditCharge MBZ */ - hdr->TreeId = tcon->tid; + shdr->TreeId = tcon->tid; /* Uid is not converted */ if (tcon->ses) - hdr->SessionId = tcon->ses->Suid; + shdr->SessionId = tcon->ses->Suid; /* * If we would set SMB2_FLAGS_DFS_OPERATIONS on open we also would have @@ -143,12 +140,12 @@ smb2_hdr_assemble(struct smb2_hdr *hdr, __le16 smb2_cmd /* command */ , * but it is safer to net set it for now. */ /* if (tcon->share_flags & SHI1005_FLAGS_DFS) - hdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ + shdr->Flags |= SMB2_FLAGS_DFS_OPERATIONS; */ - if (tcon->ses && tcon->ses->server && tcon->ses->server->sign) - hdr->Flags |= SMB2_FLAGS_SIGNED; + if (tcon->ses && tcon->ses->server && tcon->ses->server->sign && + !encryption_required(tcon)) + shdr->Flags |= SMB2_FLAGS_SIGNED; out: - pdu->StructureSize2 = cpu_to_le16(parmsize); return; } @@ -289,16 +286,74 @@ out: return rc; } +static void +fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, void *buf, + unsigned int *total_len) +{ + struct smb2_sync_pdu *spdu = (struct smb2_sync_pdu *)buf; + /* lookup word count ie StructureSize from table */ + __u16 parmsize = smb2_req_struct_sizes[le16_to_cpu(smb2_command)]; + + /* + * smaller than SMALL_BUFFER_SIZE but bigger than fixed area of + * largest operations (Create) + */ + memset(buf, 0, 256); + + smb2_hdr_assemble(&spdu->sync_hdr, smb2_command, tcon); + spdu->StructureSize2 = cpu_to_le16(parmsize); + + *total_len = parmsize + sizeof(struct smb2_sync_hdr); +} + +/* init request without RFC1001 length at the beginning */ +static int +smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon, + void **request_buf, unsigned int *total_len) +{ + int rc; + struct smb2_sync_hdr *shdr; + + rc = smb2_reconnect(smb2_command, tcon); + if (rc) + return rc; + + /* BB eventually switch this to SMB2 specific small buf size */ + *request_buf = cifs_small_buf_get(); + if (*request_buf == NULL) { + /* BB should we add a retry in here if not a writepage? */ + return -ENOMEM; + } + + shdr = (struct smb2_sync_hdr *)(*request_buf); + + fill_small_buf(smb2_command, tcon, shdr, total_len); + + if (tcon != NULL) { +#ifdef CONFIG_CIFS_STATS2 + uint16_t com_code = le16_to_cpu(smb2_command); + + cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_sent[com_code]); +#endif + cifs_stats_inc(&tcon->num_smbs_sent); + } + + return rc; +} + /* * Allocate and return pointer to an SMB request hdr, and set basic * SMB information in the SMB header. If the return code is zero, this - * function must have filled in request_buf pointer. + * function must have filled in request_buf pointer. The returned buffer + * has RFC1001 length at the beginning. */ static int small_smb2_init(__le16 smb2_command, struct cifs_tcon *tcon, void **request_buf) { - int rc = 0; + int rc; + unsigned int total_len; + struct smb2_pdu *pdu; rc = smb2_reconnect(smb2_command, tcon); if (rc) @@ -311,7 +366,12 @@ small_smb2_init(__le16 smb2_command, struct cifs_tcon *tcon, return -ENOMEM; } - smb2_hdr_assemble((struct smb2_hdr *) *request_buf, smb2_command, tcon); + pdu = (struct smb2_pdu *)(*request_buf); + + fill_small_buf(smb2_command, tcon, get_sync_hdr(pdu), &total_len); + + /* Note this is only network field converted to big endian */ + pdu->hdr.smb2_buf_length = cpu_to_be32(total_len); if (tcon != NULL) { #ifdef CONFIG_CIFS_STATS2 @@ -376,7 +436,6 @@ static void assemble_neg_contexts(struct smb2_negotiate_req *req) } #endif /* SMB311 */ - /* * * SMB2 Worker functions follow: @@ -398,6 +457,7 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) struct smb2_negotiate_req *req; struct smb2_negotiate_rsp *rsp; struct kvec iov[1]; + struct kvec rsp_iov; int rc = 0; int resp_buftype; struct TCP_Server_Info *server = ses->server; @@ -416,7 +476,7 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) if (rc) return rc; - req->hdr.SessionId = 0; + req->hdr.sync_hdr.SessionId = 0; req->Dialects[0] = cpu_to_le16(ses->server->vals->protocol_id); @@ -446,9 +506,9 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) /* 4 for rfc1002 length field */ iov[0].iov_len = get_rfc1002_length(req) + 4; - rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, flags); - - rsp = (struct smb2_negotiate_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_negotiate_rsp *)rsp_iov.iov_base; /* * No tcon so can't do * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); @@ -627,14 +687,15 @@ SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data) if (rc) return rc; - req->hdr.SessionId = 0; /* First session, not a reauthenticate */ + /* First session, not a reauthenticate */ + req->hdr.sync_hdr.SessionId = 0; /* if reconnect, we need to send previous sess id, otherwise it is 0 */ req->PreviousSessionId = sess_data->previous_session; req->Flags = 0; /* MBZ */ /* to enable echos and oplocks */ - req->hdr.CreditRequest = cpu_to_le16(3); + req->hdr.sync_hdr.CreditRequest = cpu_to_le16(3); /* only one of SMB2 signing flags may be set in SMB2 request */ if (server->sign) @@ -671,6 +732,7 @@ SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data) { int rc; struct smb2_sess_setup_req *req = sess_data->iov[0].iov_base; + struct kvec rsp_iov = { NULL, 0 }; /* Testing shows that buffer offset must be at location of Buffer[0] */ req->SecurityBufferOffset = @@ -685,7 +747,9 @@ SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data) rc = SendReceive2(sess_data->xid, sess_data->ses, sess_data->iov, 2, &sess_data->buf0_type, - CIFS_LOG_ERROR | CIFS_NEG_OP); + CIFS_LOG_ERROR | CIFS_NEG_OP, &rsp_iov); + cifs_small_buf_release(sess_data->iov[0].iov_base); + memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec)); return rc; } @@ -697,15 +761,13 @@ SMB2_sess_establish_session(struct SMB2_sess_data *sess_data) struct cifs_ses *ses = sess_data->ses; mutex_lock(&ses->server->srv_mutex); - if (ses->server->sign && ses->server->ops->generate_signingkey) { + if (ses->server->ops->generate_signingkey) { rc = ses->server->ops->generate_signingkey(ses); - kfree(ses->auth_key.response); - ses->auth_key.response = NULL; if (rc) { cifs_dbg(FYI, "SMB3 session key generation failed\n"); mutex_unlock(&ses->server->srv_mutex); - goto keygen_exit; + return rc; } } if (!ses->server->session_estab) { @@ -719,12 +781,6 @@ SMB2_sess_establish_session(struct SMB2_sess_data *sess_data) ses->status = CifsGood; ses->need_reconnect = false; spin_unlock(&GlobalMid_Lock); - -keygen_exit: - if (!ses->server->sign) { - kfree(ses->auth_key.response); - ses->auth_key.response = NULL; - } return rc; } @@ -781,11 +837,9 @@ SMB2_auth_kerberos(struct SMB2_sess_data *sess_data) goto out_put_spnego_key; rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; - ses->Suid = rsp->hdr.SessionId; + ses->Suid = rsp->hdr.sync_hdr.SessionId; ses->session_flags = le16_to_cpu(rsp->SessionFlags); - if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) - cifs_dbg(VFS, "SMB3 encryption not supported yet\n"); rc = SMB2_sess_establish_session(sess_data); out_put_spnego_key: @@ -859,7 +913,7 @@ SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data) /* If true, rc here is expected and not an error */ if (sess_data->buf0_type != CIFS_NO_BUFFER && - rsp->hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) + rsp->hdr.sync_hdr.Status == STATUS_MORE_PROCESSING_REQUIRED) rc = 0; if (rc) @@ -880,10 +934,8 @@ SMB2_sess_auth_rawntlmssp_negotiate(struct SMB2_sess_data *sess_data) cifs_dbg(FYI, "rawntlmssp session setup challenge phase\n"); - ses->Suid = rsp->hdr.SessionId; + ses->Suid = rsp->hdr.sync_hdr.SessionId; ses->session_flags = le16_to_cpu(rsp->SessionFlags); - if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) - cifs_dbg(VFS, "SMB3 encryption not supported yet\n"); out: kfree(ntlmssp_blob); @@ -916,7 +968,7 @@ SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data) goto out; req = (struct smb2_sess_setup_req *) sess_data->iov[0].iov_base; - req->hdr.SessionId = ses->Suid; + req->hdr.sync_hdr.SessionId = ses->Suid; rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses, sess_data->nls_cp); @@ -940,10 +992,8 @@ SMB2_sess_auth_rawntlmssp_authenticate(struct SMB2_sess_data *sess_data) rsp = (struct smb2_sess_setup_rsp *)sess_data->iov[0].iov_base; - ses->Suid = rsp->hdr.SessionId; + ses->Suid = rsp->hdr.sync_hdr.SessionId; ses->session_flags = le16_to_cpu(rsp->SessionFlags); - if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) - cifs_dbg(VFS, "SMB3 encryption not supported yet\n"); rc = SMB2_sess_establish_session(sess_data); out: @@ -1018,6 +1068,7 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) struct smb2_logoff_req *req; /* response is also trivial struct */ int rc = 0; struct TCP_Server_Info *server; + int flags = 0; cifs_dbg(FYI, "disconnect session %p\n", ses); @@ -1035,11 +1086,15 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) return rc; /* since no tcon, smb2_init can not do this, so do here */ - req->hdr.SessionId = ses->Suid; - if (server->sign) - req->hdr.Flags |= SMB2_FLAGS_SIGNED; + req->hdr.sync_hdr.SessionId = ses->Suid; + + if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) + flags |= CIFS_TRANSFORM_REQ; + else if (server->sign) + req->hdr.sync_hdr.Flags |= SMB2_FLAGS_SIGNED; - rc = SendReceiveNoRsp(xid, ses, (char *) &req->hdr, 0); + rc = SendReceiveNoRsp(xid, ses, (char *) req, flags); + cifs_small_buf_release(req); /* * No tcon so can't do * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); @@ -1071,11 +1126,13 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, struct smb2_tree_connect_req *req; struct smb2_tree_connect_rsp *rsp = NULL; struct kvec iov[2]; + struct kvec rsp_iov; int rc = 0; int resp_buftype; int unc_path_len; struct TCP_Server_Info *server; __le16 *unc_path = NULL; + int flags = 0; cifs_dbg(FYI, "TCON\n"); @@ -1087,12 +1144,6 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, if (tcon && tcon->bad_network_name) return -ENOENT; - if ((tcon && tcon->seal) && - ((ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) == 0)) { - cifs_dbg(VFS, "encryption requested but no server support"); - return -EOPNOTSUPP; - } - unc_path = kmalloc(MAX_SHARENAME_LENGTH * 2, GFP_KERNEL); if (unc_path == NULL) return -ENOMEM; @@ -1111,11 +1162,15 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, } if (tcon == NULL) { + if ((ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)) + flags |= CIFS_TRANSFORM_REQ; + /* since no tcon, smb2_init can not do this, so do here */ - req->hdr.SessionId = ses->Suid; + req->hdr.sync_hdr.SessionId = ses->Suid; /* if (ses->server->sec_mode & SECMODE_SIGN_REQUIRED) req->hdr.Flags |= SMB2_FLAGS_SIGNED; */ - } + } else if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; iov[0].iov_base = (char *)req; /* 4 for rfc1002 length field and 1 for pad */ @@ -1130,8 +1185,9 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, inc_rfc1001_len(req, unc_path_len - 1 /* pad */); - rc = SendReceive2(xid, ses, iov, 2, &resp_buftype, 0); - rsp = (struct smb2_tree_connect_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, 2, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base; if (rc != 0) { if (tcon) { @@ -1142,7 +1198,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, } if (tcon == NULL) { - ses->ipc_tid = rsp->hdr.TreeId; + ses->ipc_tid = rsp->hdr.sync_hdr.TreeId; goto tcon_exit; } @@ -1165,15 +1221,18 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); tcon->tidStatus = CifsGood; tcon->need_reconnect = false; - tcon->tid = rsp->hdr.TreeId; + tcon->tid = rsp->hdr.sync_hdr.TreeId; strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) cifs_dbg(VFS, "DFS capability contradicts DFS flag\n"); + + if (tcon->seal && + !(tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION)) + cifs_dbg(VFS, "Encryption is requested but not supported\n"); + init_copy_chunk_defaults(tcon); - if (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA) - cifs_dbg(VFS, "Encrypted shares not supported"); if (tcon->ses->server->ops->validate_negotiate) rc = tcon->ses->server->ops->validate_negotiate(xid, tcon); tcon_exit: @@ -1182,7 +1241,7 @@ tcon_exit: return rc; tcon_error_exit: - if (rsp->hdr.Status == STATUS_BAD_NETWORK_NAME) { + if (rsp->hdr.sync_hdr.Status == STATUS_BAD_NETWORK_NAME) { cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree); if (tcon) tcon->bad_network_name = true; @@ -1197,6 +1256,7 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) int rc = 0; struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; + int flags = 0; cifs_dbg(FYI, "Tree Disconnect\n"); @@ -1212,7 +1272,11 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) if (rc) return rc; - rc = SendReceiveNoRsp(xid, ses, (char *)&req->hdr, 0); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + rc = SendReceiveNoRsp(xid, ses, (char *)req, flags); + cifs_small_buf_release(req); if (rc) cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE); @@ -1474,14 +1538,16 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, struct cifs_tcon *tcon = oparms->tcon; struct cifs_ses *ses = tcon->ses; struct kvec iov[4]; + struct kvec rsp_iov; int resp_buftype; int uni_path_len; __le16 *copy_path = NULL; int copy_size; int rc = 0; - unsigned int num_iovecs = 2; + unsigned int n_iov = 2; __u32 file_attributes = 0; char *dhc_buf = NULL, *lc_buf = NULL; + int flags = 0; cifs_dbg(FYI, "create/open\n"); @@ -1494,6 +1560,9 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + if (oparms->create_options & CREATE_OPTION_READONLY) file_attributes |= ATTR_READONLY; if (oparms->create_options & CREATE_OPTION_SPECIAL) @@ -1544,25 +1613,25 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, *oplock == SMB2_OPLOCK_LEVEL_NONE) req->RequestedOplockLevel = *oplock; else { - rc = add_lease_context(server, iov, &num_iovecs, oplock); + rc = add_lease_context(server, iov, &n_iov, oplock); if (rc) { cifs_small_buf_release(req); kfree(copy_path); return rc; } - lc_buf = iov[num_iovecs-1].iov_base; + lc_buf = iov[n_iov-1].iov_base; } if (*oplock == SMB2_OPLOCK_LEVEL_BATCH) { /* need to set Next field of lease context if we request it */ if (server->capabilities & SMB2_GLOBAL_CAP_LEASING) { struct create_context *ccontext = - (struct create_context *)iov[num_iovecs-1].iov_base; + (struct create_context *)iov[n_iov-1].iov_base; ccontext->Next = cpu_to_le32(server->vals->create_lease_size); } - rc = add_durable_context(iov, &num_iovecs, oparms, + rc = add_durable_context(iov, &n_iov, oparms, tcon->use_persistent); if (rc) { cifs_small_buf_release(req); @@ -1570,11 +1639,12 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, kfree(lc_buf); return rc; } - dhc_buf = iov[num_iovecs-1].iov_base; + dhc_buf = iov[n_iov-1].iov_base; } - rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0); - rsp = (struct smb2_create_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, n_iov, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; if (rc != 0) { cifs_stats_fail_inc(tcon, SMB2_CREATE_HE); @@ -1618,12 +1688,15 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, { struct smb2_ioctl_req *req; struct smb2_ioctl_rsp *rsp; + struct smb2_sync_hdr *shdr; struct TCP_Server_Info *server; struct cifs_ses *ses; struct kvec iov[2]; + struct kvec rsp_iov; int resp_buftype; - int num_iovecs; + int n_iov; int rc = 0; + int flags = 0; cifs_dbg(FYI, "SMB2 IOCTL\n"); @@ -1648,6 +1721,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + req->CtlCode = cpu_to_le32(opcode); req->PersistentFileId = persistent_fid; req->VolatileFileId = volatile_fid; @@ -1659,9 +1735,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, cpu_to_le32(offsetof(struct smb2_ioctl_req, Buffer) - 4); iov[1].iov_base = in_data; iov[1].iov_len = indatalen; - num_iovecs = 2; + n_iov = 2; } else - num_iovecs = 1; + n_iov = 1; req->OutputOffset = 0; req->OutputCount = 0; /* MBZ */ @@ -1698,8 +1774,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, iov[0].iov_len = get_rfc1002_length(req) + 4; - rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0); - rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, n_iov, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_ioctl_rsp *)rsp_iov.iov_base; if ((rc != 0) && (rc != -EINVAL)) { cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); @@ -1742,9 +1819,8 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, goto ioctl_exit; } - memcpy(*out_data, - (char *)&rsp->hdr.ProtocolId + le32_to_cpu(rsp->OutputOffset), - *plen); + shdr = get_sync_hdr(rsp); + memcpy(*out_data, (char *)shdr + le32_to_cpu(rsp->OutputOffset), *plen); ioctl_exit: free_rsp_buf(resp_buftype, rsp); return rc; @@ -1784,8 +1860,10 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; struct kvec iov[1]; + struct kvec rsp_iov; int resp_buftype; int rc = 0; + int flags = 0; cifs_dbg(FYI, "Close\n"); @@ -1798,6 +1876,9 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + req->PersistentFileId = persistent_fid; req->VolatileFileId = volatile_fid; @@ -1805,8 +1886,9 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, /* 4 for rfc1002 length field */ iov[0].iov_len = get_rfc1002_length(req) + 4; - rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0); - rsp = (struct smb2_close_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_close_rsp *)rsp_iov.iov_base; if (rc != 0) { cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); @@ -1885,10 +1967,12 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, struct smb2_query_info_req *req; struct smb2_query_info_rsp *rsp = NULL; struct kvec iov[2]; + struct kvec rsp_iov; int rc = 0; int resp_buftype; struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; + int flags = 0; cifs_dbg(FYI, "Query Info\n"); @@ -1901,6 +1985,9 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + req->InfoType = SMB2_O_INFO_FILE; req->FileInfoClass = info_class; req->PersistentFileId = persistent_fid; @@ -1914,8 +2001,9 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, /* 4 for rfc1002 length field */ iov[0].iov_len = get_rfc1002_length(req) + 4; - rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0); - rsp = (struct smb2_query_info_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; if (rc) { cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); @@ -1963,11 +2051,11 @@ static void smb2_echo_callback(struct mid_q_entry *mid) { struct TCP_Server_Info *server = mid->callback_data; - struct smb2_echo_rsp *smb2 = (struct smb2_echo_rsp *)mid->resp_buf; + struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf; unsigned int credits_received = 1; if (mid->mid_state == MID_RESPONSE_RECEIVED) - credits_received = le16_to_cpu(smb2->hdr.CreditRequest); + credits_received = le16_to_cpu(rsp->hdr.sync_hdr.CreditRequest); mutex_lock(&server->srv_mutex); DeleteMidQEntry(mid); @@ -2029,9 +2117,9 @@ SMB2_echo(struct TCP_Server_Info *server) { struct smb2_echo_req *req; int rc = 0; - struct kvec iov; - struct smb_rqst rqst = { .rq_iov = &iov, - .rq_nvec = 1 }; + struct kvec iov[2]; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; cifs_dbg(FYI, "In echo request\n"); @@ -2045,14 +2133,16 @@ SMB2_echo(struct TCP_Server_Info *server) if (rc) return rc; - req->hdr.CreditRequest = cpu_to_le16(1); + req->hdr.sync_hdr.CreditRequest = cpu_to_le16(1); - iov.iov_base = (char *)req; /* 4 for rfc1002 length field */ - iov.iov_len = get_rfc1002_length(req) + 4; + iov[0].iov_len = 4; + iov[0].iov_base = (char *)req; + iov[1].iov_len = get_rfc1002_length(req); + iov[1].iov_base = (char *)req + 4; - rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, server, - CIFS_ECHO_OP); + rc = cifs_call_async(server, &rqst, NULL, smb2_echo_callback, NULL, + server, CIFS_ECHO_OP); if (rc) cifs_dbg(FYI, "Echo request failed: %d\n", rc); @@ -2068,8 +2158,10 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; struct kvec iov[1]; + struct kvec rsp_iov; int resp_buftype; int rc = 0; + int flags = 0; cifs_dbg(FYI, "Flush\n"); @@ -2082,6 +2174,9 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + req->PersistentFileId = persistent_fid; req->VolatileFileId = volatile_fid; @@ -2089,12 +2184,13 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, /* 4 for rfc1002 length field */ iov[0].iov_len = get_rfc1002_length(req) + 4; - rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0); + rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); if (rc != 0) cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE); - free_rsp_buf(resp_buftype, iov[0].iov_base); + free_rsp_buf(resp_buftype, rsp_iov.iov_base); return rc; } @@ -2103,19 +2199,23 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, * have the end_of_chain boolean set to true. */ static int -smb2_new_read_req(struct kvec *iov, struct cifs_io_parms *io_parms, - unsigned int remaining_bytes, int request_type) +smb2_new_read_req(void **buf, unsigned int *total_len, + struct cifs_io_parms *io_parms, unsigned int remaining_bytes, + int request_type) { int rc = -EACCES; - struct smb2_read_req *req = NULL; + struct smb2_read_plain_req *req = NULL; + struct smb2_sync_hdr *shdr; - rc = small_smb2_init(SMB2_READ, io_parms->tcon, (void **) &req); + rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req, + total_len); if (rc) return rc; if (io_parms->tcon->ses->server == NULL) return -ECONNABORTED; - req->hdr.ProcessId = cpu_to_le32(io_parms->pid); + shdr = &req->sync_hdr; + shdr->ProcessId = cpu_to_le32(io_parms->pid); req->PersistentFileId = io_parms->persistent_fid; req->VolatileFileId = io_parms->volatile_fid; @@ -2128,19 +2228,19 @@ smb2_new_read_req(struct kvec *iov, struct cifs_io_parms *io_parms, if (request_type & CHAINED_REQUEST) { if (!(request_type & END_OF_CHAIN)) { - /* 4 for rfc1002 length field */ - req->hdr.NextCommand = - cpu_to_le32(get_rfc1002_length(req) + 4); + /* next 8-byte aligned request */ + *total_len = DIV_ROUND_UP(*total_len, 8) * 8; + shdr->NextCommand = cpu_to_le32(*total_len); } else /* END_OF_CHAIN */ - req->hdr.NextCommand = 0; + shdr->NextCommand = 0; if (request_type & RELATED_REQUEST) { - req->hdr.Flags |= SMB2_FLAGS_RELATED_OPERATIONS; + shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; /* * Related requests use info from previous read request * in chain. */ - req->hdr.SessionId = 0xFFFFFFFF; - req->hdr.TreeId = 0xFFFFFFFF; + shdr->SessionId = 0xFFFFFFFF; + shdr->TreeId = 0xFFFFFFFF; req->PersistentFileId = 0xFFFFFFFF; req->VolatileFileId = 0xFFFFFFFF; } @@ -2150,9 +2250,7 @@ smb2_new_read_req(struct kvec *iov, struct cifs_io_parms *io_parms, else req->RemainingBytes = 0; - iov[0].iov_base = (char *)req; - /* 4 for rfc1002 length field */ - iov[0].iov_len = get_rfc1002_length(req) + 4; + *buf = req; return rc; } @@ -2162,10 +2260,11 @@ smb2_readv_callback(struct mid_q_entry *mid) struct cifs_readdata *rdata = mid->callback_data; struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); struct TCP_Server_Info *server = tcon->ses->server; - struct smb2_hdr *buf = (struct smb2_hdr *)rdata->iov.iov_base; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)rdata->iov[1].iov_base; unsigned int credits_received = 1; - struct smb_rqst rqst = { .rq_iov = &rdata->iov, - .rq_nvec = 1, + struct smb_rqst rqst = { .rq_iov = rdata->iov, + .rq_nvec = 2, .rq_pages = rdata->pages, .rq_npages = rdata->nr_pages, .rq_pagesz = rdata->pagesz, @@ -2177,9 +2276,9 @@ smb2_readv_callback(struct mid_q_entry *mid) switch (mid->mid_state) { case MID_RESPONSE_RECEIVED: - credits_received = le16_to_cpu(buf->CreditRequest); + credits_received = le16_to_cpu(shdr->CreditRequest); /* result already set, check signature */ - if (server->sign) { + if (server->sign && !mid->decrypted) { int rc; rc = smb2_verify_signature(&rqst, server); @@ -2216,16 +2315,19 @@ smb2_readv_callback(struct mid_q_entry *mid) add_credits(server, credits_received, 0); } -/* smb2_async_readv - send an async write, and set up mid to handle result */ +/* smb2_async_readv - send an async read, and set up mid to handle result */ int smb2_async_readv(struct cifs_readdata *rdata) { int rc, flags = 0; - struct smb2_hdr *buf; + char *buf; + struct smb2_sync_hdr *shdr; struct cifs_io_parms io_parms; - struct smb_rqst rqst = { .rq_iov = &rdata->iov, - .rq_nvec = 1 }; + struct smb_rqst rqst = { .rq_iov = rdata->iov, + .rq_nvec = 2 }; struct TCP_Server_Info *server; + unsigned int total_len; + __be32 req_len; cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", __func__, rdata->offset, rdata->bytes); @@ -2239,7 +2341,7 @@ smb2_async_readv(struct cifs_readdata *rdata) server = io_parms.tcon->ses->server; - rc = smb2_new_read_req(&rdata->iov, &io_parms, 0, 0); + rc = smb2_new_read_req((void **) &buf, &total_len, &io_parms, 0, 0); if (rc) { if (rc == -EAGAIN && rdata->credits) { /* credits was reset by reconnect */ @@ -2252,26 +2354,34 @@ smb2_async_readv(struct cifs_readdata *rdata) return rc; } - buf = (struct smb2_hdr *)rdata->iov.iov_base; - /* 4 for rfc1002 length field */ - rdata->iov.iov_len = get_rfc1002_length(rdata->iov.iov_base) + 4; + if (encryption_required(io_parms.tcon)) + flags |= CIFS_TRANSFORM_REQ; + + req_len = cpu_to_be32(total_len); + + rdata->iov[0].iov_base = &req_len; + rdata->iov[0].iov_len = sizeof(__be32); + rdata->iov[1].iov_base = buf; + rdata->iov[1].iov_len = total_len; + + shdr = (struct smb2_sync_hdr *)buf; if (rdata->credits) { - buf->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes, + shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(rdata->bytes, SMB2_MAX_BUFFER_SIZE)); - buf->CreditRequest = buf->CreditCharge; + shdr->CreditRequest = shdr->CreditCharge; spin_lock(&server->req_lock); server->credits += rdata->credits - - le16_to_cpu(buf->CreditCharge); + le16_to_cpu(shdr->CreditCharge); spin_unlock(&server->req_lock); wake_up(&server->request_q); - flags = CIFS_HAS_CREDITS; + flags |= CIFS_HAS_CREDITS; } kref_get(&rdata->refcount); rc = cifs_call_async(io_parms.tcon->ses->server, &rqst, cifs_readv_receive, smb2_readv_callback, - rdata, flags); + smb3_handle_read_data, rdata, flags); if (rc) { kref_put(&rdata->refcount, cifs_readdata_release); cifs_stats_fail_inc(io_parms.tcon, SMB2_READ_HE); @@ -2286,21 +2396,41 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, char **buf, int *buf_type) { int resp_buftype, rc = -EACCES; + struct smb2_read_plain_req *req = NULL; struct smb2_read_rsp *rsp = NULL; - struct kvec iov[1]; + struct smb2_sync_hdr *shdr; + struct kvec iov[2]; + struct kvec rsp_iov; + unsigned int total_len; + __be32 req_len; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; + int flags = CIFS_LOG_ERROR; + struct cifs_ses *ses = io_parms->tcon->ses; *nbytes = 0; - rc = smb2_new_read_req(iov, io_parms, 0, 0); + rc = smb2_new_read_req((void **)&req, &total_len, io_parms, 0, 0); if (rc) return rc; - rc = SendReceive2(xid, io_parms->tcon->ses, iov, 1, - &resp_buftype, CIFS_LOG_ERROR); + if (encryption_required(io_parms->tcon)) + flags |= CIFS_TRANSFORM_REQ; - rsp = (struct smb2_read_rsp *)iov[0].iov_base; + req_len = cpu_to_be32(total_len); - if (rsp->hdr.Status == STATUS_END_OF_FILE) { - free_rsp_buf(resp_buftype, iov[0].iov_base); + iov[0].iov_base = &req_len; + iov[0].iov_len = sizeof(__be32); + iov[1].iov_base = req; + iov[1].iov_len = total_len; + + rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + + rsp = (struct smb2_read_rsp *)rsp_iov.iov_base; + shdr = get_sync_hdr(rsp); + + if (shdr->Status == STATUS_END_OF_FILE) { + free_rsp_buf(resp_buftype, rsp_iov.iov_base); return 0; } @@ -2319,11 +2449,10 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, } if (*buf) { - memcpy(*buf, (char *)&rsp->hdr.ProtocolId + rsp->DataOffset, - *nbytes); - free_rsp_buf(resp_buftype, iov[0].iov_base); + memcpy(*buf, (char *)shdr + rsp->DataOffset, *nbytes); + free_rsp_buf(resp_buftype, rsp_iov.iov_base); } else if (resp_buftype != CIFS_NO_BUFFER) { - *buf = iov[0].iov_base; + *buf = rsp_iov.iov_base; if (resp_buftype == CIFS_SMALL_BUFFER) *buf_type = CIFS_SMALL_BUFFER; else if (resp_buftype == CIFS_LARGE_BUFFER) @@ -2348,7 +2477,7 @@ smb2_writev_callback(struct mid_q_entry *mid) switch (mid->mid_state) { case MID_RESPONSE_RECEIVED: - credits_received = le16_to_cpu(rsp->hdr.CreditRequest); + credits_received = le16_to_cpu(rsp->hdr.sync_hdr.CreditRequest); wdata->result = smb2_check_receive(mid, tcon->ses->server, 0); if (wdata->result != 0) break; @@ -2394,10 +2523,11 @@ smb2_async_writev(struct cifs_writedata *wdata, { int rc = -EACCES, flags = 0; struct smb2_write_req *req = NULL; + struct smb2_sync_hdr *shdr; struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); struct TCP_Server_Info *server = tcon->ses->server; - struct kvec iov; - struct smb_rqst rqst; + struct kvec iov[2]; + struct smb_rqst rqst = { }; rc = small_smb2_init(SMB2_WRITE, tcon, (void **) &req); if (rc) { @@ -2412,7 +2542,11 @@ smb2_async_writev(struct cifs_writedata *wdata, goto async_writev_out; } - req->hdr.ProcessId = cpu_to_le32(wdata->cfile->pid); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + shdr = get_sync_hdr(req); + shdr->ProcessId = cpu_to_le32(wdata->cfile->pid); req->PersistentFileId = wdata->cfile->fid.persistent_fid; req->VolatileFileId = wdata->cfile->fid.volatile_fid; @@ -2426,11 +2560,13 @@ smb2_async_writev(struct cifs_writedata *wdata, req->RemainingBytes = 0; /* 4 for rfc1002 length field and 1 for Buffer */ - iov.iov_len = get_rfc1002_length(req) + 4 - 1; - iov.iov_base = req; + iov[0].iov_len = 4; + iov[0].iov_base = req; + iov[1].iov_len = get_rfc1002_length(req) - 1; + iov[1].iov_base = (char *)req + 4; - rqst.rq_iov = &iov; - rqst.rq_nvec = 1; + rqst.rq_iov = iov; + rqst.rq_nvec = 2; rqst.rq_pages = wdata->pages; rqst.rq_npages = wdata->nr_pages; rqst.rq_pagesz = wdata->pagesz; @@ -2444,20 +2580,20 @@ smb2_async_writev(struct cifs_writedata *wdata, inc_rfc1001_len(&req->hdr, wdata->bytes - 1 /* Buffer */); if (wdata->credits) { - req->hdr.CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, + shdr->CreditCharge = cpu_to_le16(DIV_ROUND_UP(wdata->bytes, SMB2_MAX_BUFFER_SIZE)); - req->hdr.CreditRequest = req->hdr.CreditCharge; + shdr->CreditRequest = shdr->CreditCharge; spin_lock(&server->req_lock); server->credits += wdata->credits - - le16_to_cpu(req->hdr.CreditCharge); + le16_to_cpu(shdr->CreditCharge); spin_unlock(&server->req_lock); wake_up(&server->request_q); - flags = CIFS_HAS_CREDITS; + flags |= CIFS_HAS_CREDITS; } kref_get(&wdata->refcount); - rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, wdata, - flags); + rc = cifs_call_async(server, &rqst, NULL, smb2_writev_callback, NULL, + wdata, flags); if (rc) { kref_put(&wdata->refcount, release); @@ -2483,6 +2619,9 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, struct smb2_write_req *req = NULL; struct smb2_write_rsp *rsp = NULL; int resp_buftype; + struct kvec rsp_iov; + int flags = 0; + *nbytes = 0; if (n_vec < 1) @@ -2495,7 +2634,10 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, if (io_parms->tcon->ses->server == NULL) return -ECONNABORTED; - req->hdr.ProcessId = cpu_to_le32(io_parms->pid); + if (encryption_required(io_parms->tcon)) + flags |= CIFS_TRANSFORM_REQ; + + req->hdr.sync_hdr.ProcessId = cpu_to_le32(io_parms->pid); req->PersistentFileId = io_parms->persistent_fid; req->VolatileFileId = io_parms->volatile_fid; @@ -2517,8 +2659,9 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, inc_rfc1001_len(req, io_parms->length - 1 /* Buffer */); rc = SendReceive2(xid, io_parms->tcon->ses, iov, n_vec + 1, - &resp_buftype, 0); - rsp = (struct smb2_write_rsp *)iov[0].iov_base; + &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_write_rsp *)rsp_iov.iov_base; if (rc) { cifs_stats_fail_inc(io_parms->tcon, SMB2_WRITE_HE); @@ -2581,6 +2724,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, struct smb2_query_directory_req *req; struct smb2_query_directory_rsp *rsp = NULL; struct kvec iov[2]; + struct kvec rsp_iov; int rc = 0; int len; int resp_buftype = CIFS_NO_BUFFER; @@ -2591,6 +2735,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, char *end_of_smb; unsigned int output_size = CIFSMaxBufSize; size_t info_buf_size; + int flags = 0; if (ses && (ses->server)) server = ses->server; @@ -2601,6 +2746,9 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + switch (srch_inf->info_level) { case SMB_FIND_FILE_DIRECTORY_INFO: req->FileInformationClass = FILE_DIRECTORY_INFORMATION; @@ -2645,11 +2793,13 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, inc_rfc1001_len(req, len - 1 /* Buffer */); - rc = SendReceive2(xid, ses, iov, 2, &resp_buftype, 0); - rsp = (struct smb2_query_directory_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, 2, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base; if (rc) { - if (rc == -ENODATA && rsp->hdr.Status == STATUS_NO_MORE_FILES) { + if (rc == -ENODATA && + rsp->hdr.sync_hdr.Status == STATUS_NO_MORE_FILES) { srch_inf->endOfSearch = true; rc = 0; } @@ -2705,11 +2855,13 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, struct smb2_set_info_req *req; struct smb2_set_info_rsp *rsp = NULL; struct kvec *iov; + struct kvec rsp_iov; int rc = 0; int resp_buftype; unsigned int i; struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; + int flags = 0; if (ses && (ses->server)) server = ses->server; @@ -2729,7 +2881,10 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, return rc; } - req->hdr.ProcessId = cpu_to_le32(pid); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + req->hdr.sync_hdr.ProcessId = cpu_to_le32(pid); req->InfoType = SMB2_O_INFO_FILE; req->FileInfoClass = info_class; @@ -2756,8 +2911,9 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, iov[i].iov_len = size[i]; } - rc = SendReceive2(xid, ses, iov, num, &resp_buftype, 0); - rsp = (struct smb2_set_info_rsp *)iov[0].iov_base; + rc = SendReceive2(xid, ses, iov, num, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(req); + rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base; if (rc != 0) cifs_stats_fail_inc(tcon, SMB2_SET_INFO_HE); @@ -2885,20 +3041,23 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, { int rc; struct smb2_oplock_break *req = NULL; + int flags = CIFS_OBREAK_OP; cifs_dbg(FYI, "SMB2_oplock_break\n"); rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req); - if (rc) return rc; + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + req->VolatileFid = volatile_fid; req->PersistentFid = persistent_fid; req->OplockLevel = oplock_level; - req->hdr.CreditRequest = cpu_to_le16(1); + req->hdr.sync_hdr.CreditRequest = cpu_to_le16(1); - rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, CIFS_OBREAK_OP); - /* SMB2 buffer freed by function above */ + rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, flags); + cifs_small_buf_release(req); if (rc) { cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); @@ -2958,10 +3117,12 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, { struct smb2_query_info_rsp *rsp = NULL; struct kvec iov; + struct kvec rsp_iov; int rc = 0; int resp_buftype; struct cifs_ses *ses = tcon->ses; struct smb2_fs_full_size_info *info = NULL; + int flags = 0; rc = build_qfs_info_req(&iov, tcon, FS_FULL_SIZE_INFORMATION, sizeof(struct smb2_fs_full_size_info), @@ -2969,12 +3130,16 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; - rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(iov.iov_base); if (rc) { cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); goto qfsinf_exit; } - rsp = (struct smb2_query_info_rsp *)iov.iov_base; + rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; info = (struct smb2_fs_full_size_info *)(4 /* RFC1001 len */ + le16_to_cpu(rsp->OutputBufferOffset) + (char *)&rsp->hdr); @@ -2985,7 +3150,7 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, copy_fs_info_to_kstatfs(info, fsdata); qfsinf_exit: - free_rsp_buf(resp_buftype, iov.iov_base); + free_rsp_buf(resp_buftype, rsp_iov.iov_base); return rc; } @@ -2995,10 +3160,12 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, { struct smb2_query_info_rsp *rsp = NULL; struct kvec iov; + struct kvec rsp_iov; int rc = 0; int resp_buftype, max_len, min_len; struct cifs_ses *ses = tcon->ses; unsigned int rsp_len, offset; + int flags = 0; if (level == FS_DEVICE_INFORMATION) { max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); @@ -3019,12 +3186,16 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; - rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, 0); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + rc = SendReceive2(xid, ses, &iov, 1, &resp_buftype, flags, &rsp_iov); + cifs_small_buf_release(iov.iov_base); if (rc) { cifs_stats_fail_inc(tcon, SMB2_QUERY_INFO_HE); goto qfsattr_exit; } - rsp = (struct smb2_query_info_rsp *)iov.iov_base; + rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; rsp_len = le32_to_cpu(rsp->OutputBufferLength); offset = le16_to_cpu(rsp->OutputBufferOffset); @@ -3048,7 +3219,7 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, } qfsattr_exit: - free_rsp_buf(resp_buftype, iov.iov_base); + free_rsp_buf(resp_buftype, rsp_iov.iov_base); return rc; } @@ -3060,8 +3231,10 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; struct smb2_lock_req *req = NULL; struct kvec iov[2]; + struct kvec rsp_iov; int resp_buf_type; unsigned int count; + int flags = CIFS_NO_RESP; cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); @@ -3069,7 +3242,10 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; - req->hdr.ProcessId = cpu_to_le32(pid); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + req->hdr.sync_hdr.ProcessId = cpu_to_le32(pid); req->LockCount = cpu_to_le16(num_lock); req->PersistentFileId = persist_fid; @@ -3085,7 +3261,9 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, iov[1].iov_len = count; cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); - rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); + rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, flags, + &rsp_iov); + cifs_small_buf_release(req); if (rc) { cifs_dbg(FYI, "Send error in smb2_lockv = %d\n", rc); cifs_stats_fail_inc(tcon, SMB2_LOCK_HE); @@ -3117,22 +3295,25 @@ SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon, { int rc; struct smb2_lease_ack *req = NULL; + int flags = CIFS_OBREAK_OP; cifs_dbg(FYI, "SMB2_lease_break\n"); rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req); - if (rc) return rc; - req->hdr.CreditRequest = cpu_to_le16(1); + if (encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + req->hdr.sync_hdr.CreditRequest = cpu_to_le16(1); req->StructureSize = cpu_to_le16(36); inc_rfc1001_len(req, 12); memcpy(req->LeaseKey, lease_key, 16); req->LeaseState = lease_state; - rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, CIFS_OBREAK_OP); - /* SMB2 buffer freed by function above */ + rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, flags); + cifs_small_buf_release(req); if (rc) { cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index dc0d141f33e2..c03b252501a1 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -101,10 +101,7 @@ #define SMB2_HEADER_STRUCTURE_SIZE cpu_to_le16(64) -struct smb2_hdr { - __be32 smb2_buf_length; /* big endian on wire */ - /* length is only two or three bytes - with - one or two byte type preceding it that MBZ */ +struct smb2_sync_hdr { __le32 ProtocolId; /* 0xFE 'S' 'M' 'B' */ __le16 StructureSize; /* 64 */ __le16 CreditCharge; /* MBZ */ @@ -120,16 +117,31 @@ struct smb2_hdr { __u8 Signature[16]; } __packed; +struct smb2_sync_pdu { + struct smb2_sync_hdr sync_hdr; + __le16 StructureSize2; /* size of wct area (varies, request specific) */ +} __packed; + +struct smb2_hdr { + __be32 smb2_buf_length; /* big endian on wire */ + /* length is only two or three bytes - with */ + /* one or two byte type preceding it that MBZ */ + struct smb2_sync_hdr sync_hdr; +} __packed; + struct smb2_pdu { struct smb2_hdr hdr; __le16 StructureSize2; /* size of wct area (varies, request specific) */ } __packed; +#define SMB3_AES128CMM_NONCE 11 +#define SMB3_AES128GCM_NONCE 12 + struct smb2_transform_hdr { __be32 smb2_buf_length; /* big endian on wire */ /* length is only two or three bytes - with one or two byte type preceding it that MBZ */ - __u8 ProtocolId[4]; /* 0xFD 'S' 'M' 'B' */ + __le32 ProtocolId; /* 0xFD 'S' 'M' 'B' */ __u8 Signature[16]; __u8 Nonce[16]; __le32 OriginalMessageSize; @@ -814,8 +826,9 @@ struct smb2_flush_rsp { #define SMB2_CHANNEL_RDMA_V1 0x00000001 /* SMB3 or later */ #define SMB2_CHANNEL_RDMA_V1_INVALIDATE 0x00000001 /* SMB3.02 or later */ -struct smb2_read_req { - struct smb2_hdr hdr; +/* SMB2 read request without RFC1001 length at the beginning */ +struct smb2_read_plain_req { + struct smb2_sync_hdr sync_hdr; __le16 StructureSize; /* Must be 49 */ __u8 Padding; /* offset from start of SMB2 header to place read */ __u8 Flags; /* MBZ unless SMB3.02 or later */ diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index f2d511a6971b..85fc7a789334 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -56,6 +56,10 @@ extern void smb2_echo_request(struct work_struct *work); extern __le32 smb2_get_lease_state(struct cifsInodeInfo *cinode); extern bool smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv); +extern struct cifs_ses *smb2_find_smb_ses(struct TCP_Server_Info *server, + __u64 ses_id); +extern int smb3_handle_read_data(struct TCP_Server_Info *server, + struct mid_q_entry *mid); extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src); @@ -97,6 +101,7 @@ extern int smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock, const unsigned int xid); extern int smb2_push_mandatory_locks(struct cifsFileInfo *cfile); extern void smb2_reconnect_server(struct work_struct *work); +extern int smb3_crypto_aead_allocate(struct TCP_Server_Info *server); /* * SMB2 Worker functions - most of protocol specific implementation details diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index bc9a7b634643..7c3bb1bd7eed 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -31,6 +31,7 @@ #include <asm/processor.h> #include <linux/mempool.h> #include <linux/highmem.h> +#include <crypto/aead.h> #include "smb2pdu.h" #include "cifsglob.h" #include "cifsproto.h" @@ -114,14 +115,14 @@ smb3_crypto_shash_allocate(struct TCP_Server_Info *server) return 0; } -static struct cifs_ses * -smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server) +struct cifs_ses * +smb2_find_smb_ses(struct TCP_Server_Info *server, __u64 ses_id) { struct cifs_ses *ses; spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { - if (ses->Suid != smb2hdr->SessionId) + if (ses->Suid != ses_id) continue; spin_unlock(&cifs_tcp_ses_lock); return ses; @@ -131,7 +132,6 @@ smb2_find_smb_ses(struct smb2_hdr *smb2hdr, struct TCP_Server_Info *server) return NULL; } - int smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) { @@ -139,17 +139,17 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) unsigned char smb2_signature[SMB2_HMACSHA256_SIZE]; unsigned char *sigptr = smb2_signature; struct kvec *iov = rqst->rq_iov; - struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base; + struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base; struct cifs_ses *ses; - ses = smb2_find_smb_ses(smb2_pdu, server); + ses = smb2_find_smb_ses(server, shdr->SessionId); if (!ses) { cifs_dbg(VFS, "%s: Could not find session\n", __func__); return 0; } memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE); - memset(smb2_pdu->Signature, 0x0, SMB2_SIGNATURE_SIZE); + memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE); rc = smb2_crypto_shash_allocate(server); if (rc) { @@ -174,7 +174,7 @@ smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) &server->secmech.sdeschmacsha256->shash); if (!rc) - memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE); + memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE); return rc; } @@ -356,17 +356,17 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) unsigned char smb3_signature[SMB2_CMACAES_SIZE]; unsigned char *sigptr = smb3_signature; struct kvec *iov = rqst->rq_iov; - struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base; + struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)iov[1].iov_base; struct cifs_ses *ses; - ses = smb2_find_smb_ses(smb2_pdu, server); + ses = smb2_find_smb_ses(server, shdr->SessionId); if (!ses) { cifs_dbg(VFS, "%s: Could not find session\n", __func__); return 0; } memset(smb3_signature, 0x0, SMB2_CMACAES_SIZE); - memset(smb2_pdu->Signature, 0x0, SMB2_SIGNATURE_SIZE); + memset(shdr->Signature, 0x0, SMB2_SIGNATURE_SIZE); rc = crypto_shash_setkey(server->secmech.cmacaes, ses->smb3signingkey, SMB2_CMACAES_SIZE); @@ -391,7 +391,7 @@ smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) &server->secmech.sdesccmacaes->shash); if (!rc) - memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE); + memcpy(shdr->Signature, sigptr, SMB2_SIGNATURE_SIZE); return rc; } @@ -401,14 +401,15 @@ static int smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server) { int rc = 0; - struct smb2_hdr *smb2_pdu = rqst->rq_iov[0].iov_base; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base; - if (!(smb2_pdu->Flags & SMB2_FLAGS_SIGNED) || + if (!(shdr->Flags & SMB2_FLAGS_SIGNED) || server->tcpStatus == CifsNeedNegotiate) return rc; if (!server->session_estab) { - strncpy(smb2_pdu->Signature, "BSRSPYL", 8); + strncpy(shdr->Signature, "BSRSPYL", 8); return rc; } @@ -422,11 +423,12 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) { unsigned int rc; char server_response_sig[16]; - struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)rqst->rq_iov[0].iov_base; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base; - if ((smb2_pdu->Command == SMB2_NEGOTIATE) || - (smb2_pdu->Command == SMB2_SESSION_SETUP) || - (smb2_pdu->Command == SMB2_OPLOCK_BREAK) || + if ((shdr->Command == SMB2_NEGOTIATE) || + (shdr->Command == SMB2_SESSION_SETUP) || + (shdr->Command == SMB2_OPLOCK_BREAK) || (!server->session_estab)) return 0; @@ -436,17 +438,17 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) */ /* Do not need to verify session setups with signature "BSRSPYL " */ - if (memcmp(smb2_pdu->Signature, "BSRSPYL ", 8) == 0) + if (memcmp(shdr->Signature, "BSRSPYL ", 8) == 0) cifs_dbg(FYI, "dummy signature received for smb command 0x%x\n", - smb2_pdu->Command); + shdr->Command); /* * Save off the origiginal signature so we can modify the smb and check * our calculated signature against what the server sent. */ - memcpy(server_response_sig, smb2_pdu->Signature, SMB2_SIGNATURE_SIZE); + memcpy(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE); - memset(smb2_pdu->Signature, 0, SMB2_SIGNATURE_SIZE); + memset(shdr->Signature, 0, SMB2_SIGNATURE_SIZE); mutex_lock(&server->srv_mutex); rc = server->ops->calc_signature(rqst, server); @@ -455,8 +457,7 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) if (rc) return rc; - if (memcmp(server_response_sig, smb2_pdu->Signature, - SMB2_SIGNATURE_SIZE)) + if (memcmp(server_response_sig, shdr->Signature, SMB2_SIGNATURE_SIZE)) return -EACCES; else return 0; @@ -467,18 +468,19 @@ smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server) * and when srv_mutex is held. */ static inline void -smb2_seq_num_into_buf(struct TCP_Server_Info *server, struct smb2_hdr *hdr) +smb2_seq_num_into_buf(struct TCP_Server_Info *server, + struct smb2_sync_hdr *shdr) { - unsigned int i, num = le16_to_cpu(hdr->CreditCharge); + unsigned int i, num = le16_to_cpu(shdr->CreditCharge); - hdr->MessageId = get_next_mid64(server); + shdr->MessageId = get_next_mid64(server); /* skip message numbers according to CreditCharge field */ for (i = 1; i < num; i++) get_next_mid(server); } static struct mid_q_entry * -smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer, +smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr, struct TCP_Server_Info *server) { struct mid_q_entry *temp; @@ -493,9 +495,9 @@ smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer, return temp; else { memset(temp, 0, sizeof(struct mid_q_entry)); - temp->mid = le64_to_cpu(smb_buffer->MessageId); + temp->mid = le64_to_cpu(shdr->MessageId); temp->pid = current->pid; - temp->command = smb_buffer->Command; /* Always LE */ + temp->command = shdr->Command; /* Always LE */ temp->when_alloc = jiffies; temp->server = server; @@ -513,7 +515,7 @@ smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer, } static int -smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf, +smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_sync_hdr *shdr, struct mid_q_entry **mid) { if (ses->server->tcpStatus == CifsExiting) @@ -525,19 +527,19 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf, } if (ses->status == CifsNew) { - if ((buf->Command != SMB2_SESSION_SETUP) && - (buf->Command != SMB2_NEGOTIATE)) + if ((shdr->Command != SMB2_SESSION_SETUP) && + (shdr->Command != SMB2_NEGOTIATE)) return -EAGAIN; /* else ok - we are setting up session */ } if (ses->status == CifsExiting) { - if (buf->Command != SMB2_LOGOFF) + if (shdr->Command != SMB2_LOGOFF) return -EAGAIN; /* else ok - we are shutting down the session */ } - *mid = smb2_mid_entry_alloc(buf, ses->server); + *mid = smb2_mid_entry_alloc(shdr, ses->server); if (*mid == NULL) return -ENOMEM; spin_lock(&GlobalMid_Lock); @@ -551,16 +553,18 @@ smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, bool log_error) { unsigned int len = get_rfc1002_length(mid->resp_buf); - struct kvec iov; - struct smb_rqst rqst = { .rq_iov = &iov, - .rq_nvec = 1 }; + struct kvec iov[2]; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; - iov.iov_base = (char *)mid->resp_buf; - iov.iov_len = get_rfc1002_length(mid->resp_buf) + 4; + iov[0].iov_base = (char *)mid->resp_buf; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)mid->resp_buf + 4; + iov[1].iov_len = len; dump_smb(mid->resp_buf, min_t(u32, 80, len)); /* convert the length into a more usable form */ - if (len > 24 && server->sign) { + if (len > 24 && server->sign && !mid->decrypted) { int rc; rc = smb2_verify_signature(&rqst, server); @@ -576,12 +580,13 @@ struct mid_q_entry * smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst) { int rc; - struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base; struct mid_q_entry *mid; - smb2_seq_num_into_buf(ses->server, hdr); + smb2_seq_num_into_buf(ses->server, shdr); - rc = smb2_get_mid_entry(ses, hdr, &mid); + rc = smb2_get_mid_entry(ses, shdr, &mid); if (rc) return ERR_PTR(rc); rc = smb2_sign_rqst(rqst, ses->server); @@ -596,12 +601,13 @@ struct mid_q_entry * smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) { int rc; - struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base; + struct smb2_sync_hdr *shdr = + (struct smb2_sync_hdr *)rqst->rq_iov[1].iov_base; struct mid_q_entry *mid; - smb2_seq_num_into_buf(server, hdr); + smb2_seq_num_into_buf(server, shdr); - mid = smb2_mid_entry_alloc(hdr, server); + mid = smb2_mid_entry_alloc(shdr, server); if (mid == NULL) return ERR_PTR(-ENOMEM); @@ -613,3 +619,33 @@ smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) return mid; } + +int +smb3_crypto_aead_allocate(struct TCP_Server_Info *server) +{ + struct crypto_aead *tfm; + + if (!server->secmech.ccmaesencrypt) { + tfm = crypto_alloc_aead("ccm(aes)", 0, 0); + if (IS_ERR(tfm)) { + cifs_dbg(VFS, "%s: Failed to alloc encrypt aead\n", + __func__); + return PTR_ERR(tfm); + } + server->secmech.ccmaesencrypt = tfm; + } + + if (!server->secmech.ccmaesdecrypt) { + tfm = crypto_alloc_aead("ccm(aes)", 0, 0); + if (IS_ERR(tfm)) { + crypto_free_aead(server->secmech.ccmaesencrypt); + server->secmech.ccmaesencrypt = NULL; + cifs_dbg(VFS, "%s: Failed to alloc decrypt aead\n", + __func__); + return PTR_ERR(tfm); + } + server->secmech.ccmaesdecrypt = tfm; + } + + return 0; +} diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index fbb84c08e3cd..526f0533cb4e 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -221,7 +221,7 @@ rqst_len(struct smb_rqst *rqst) } static int -smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) +__smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) { int rc; struct kvec *iov = rqst->rq_iov; @@ -245,8 +245,12 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) return -EIO; } + if (n_vec < 2) + return -EIO; + cifs_dbg(FYI, "Sending smb: smb_len=%u\n", smb_buf_length); dump_smb(iov[0].iov_base, iov[0].iov_len); + dump_smb(iov[1].iov_base, iov[1].iov_len); /* cork the socket */ kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK, @@ -309,24 +313,43 @@ uncork: } static int -smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec) +smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst, int flags) { - struct smb_rqst rqst = { .rq_iov = iov, - .rq_nvec = n_vec }; + struct smb_rqst cur_rqst; + int rc; + + if (!(flags & CIFS_TRANSFORM_REQ)) + return __smb_send_rqst(server, rqst); + + if (!server->ops->init_transform_rq || + !server->ops->free_transform_rq) { + cifs_dbg(VFS, "Encryption requested but transform callbacks are missed\n"); + return -EIO; + } + + rc = server->ops->init_transform_rq(server, &cur_rqst, rqst); + if (rc) + return rc; - return smb_send_rqst(server, &rqst); + rc = __smb_send_rqst(server, &cur_rqst); + server->ops->free_transform_rq(&cur_rqst); + return rc; } int smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer, unsigned int smb_buf_length) { - struct kvec iov; + struct kvec iov[2]; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; - iov.iov_base = smb_buffer; - iov.iov_len = smb_buf_length + 4; + iov[0].iov_base = smb_buffer; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)smb_buffer + 4; + iov[1].iov_len = smb_buf_length; - return smb_sendv(server, &iov, 1); + return __smb_send_rqst(server, &rqst); } static int @@ -454,6 +477,10 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; struct mid_q_entry *mid; + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return ERR_PTR(-EIO); + /* enable signing if server requires it */ if (server->sign) hdr->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; @@ -478,7 +505,7 @@ cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) int cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, mid_receive_t *receive, mid_callback_t *callback, - void *cbdata, const int flags) + mid_handle_t *handle, void *cbdata, const int flags) { int rc, timeout, optype; struct mid_q_entry *mid; @@ -505,6 +532,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, mid->receive = receive; mid->callback = callback; mid->callback_data = cbdata; + mid->handle = handle; mid->mid_state = MID_REQUEST_SUBMITTED; /* put it on the pending_mid_q */ @@ -514,7 +542,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, cifs_in_send_inc(server); - rc = smb_send_rqst(server, rqst); + rc = smb_send_rqst(server, rqst, flags); cifs_in_send_dec(server); cifs_save_when_sent(mid); @@ -547,12 +575,13 @@ SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, { int rc; struct kvec iov[1]; + struct kvec rsp_iov; int resp_buf_type; iov[0].iov_base = in_buf; iov[0].iov_len = get_rfc1002_length(in_buf) + 4; flags |= CIFS_NO_RESP; - rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags); + rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags, &rsp_iov); cifs_dbg(NOISY, "SendRcvNoRsp flags %d rc %d\n", flags, rc); return rc; @@ -595,10 +624,11 @@ cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server) } static inline int -send_cancel(struct TCP_Server_Info *server, void *buf, struct mid_q_entry *mid) +send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, + struct mid_q_entry *mid) { return server->ops->send_cancel ? - server->ops->send_cancel(server, buf, mid) : 0; + server->ops->send_cancel(server, rqst, mid) : 0; } int @@ -611,13 +641,15 @@ cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, /* convert the length into a more usable form */ if (server->sign) { - struct kvec iov; + struct kvec iov[2]; int rc = 0; - struct smb_rqst rqst = { .rq_iov = &iov, - .rq_nvec = 1 }; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; - iov.iov_base = mid->resp_buf; - iov.iov_len = len; + iov[0].iov_base = mid->resp_buf; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)mid->resp_buf + 4; + iov[1].iov_len = len - 4; /* FIXME: add code to kill session */ rc = cifs_verify_signature(&rqst, server, mid->sequence_number); @@ -637,6 +669,10 @@ cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst) struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; struct mid_q_entry *mid; + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return ERR_PTR(-EIO); + rc = allocate_mid(ses, hdr, &mid); if (rc) return ERR_PTR(rc); @@ -649,17 +685,15 @@ cifs_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst) } int -SendReceive2(const unsigned int xid, struct cifs_ses *ses, - struct kvec *iov, int n_vec, int *resp_buf_type /* ret */, - const int flags) +cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, + struct smb_rqst *rqst, int *resp_buf_type, const int flags, + struct kvec *resp_iov) { int rc = 0; int timeout, optype; struct mid_q_entry *midQ; - char *buf = iov[0].iov_base; unsigned int credits = 1; - struct smb_rqst rqst = { .rq_iov = iov, - .rq_nvec = n_vec }; + char *buf; timeout = flags & CIFS_TIMEOUT_MASK; optype = flags & CIFS_OP_MASK; @@ -667,15 +701,12 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, *resp_buf_type = CIFS_NO_BUFFER; /* no response buf yet */ if ((ses == NULL) || (ses->server == NULL)) { - cifs_small_buf_release(buf); cifs_dbg(VFS, "Null session\n"); return -EIO; } - if (ses->server->tcpStatus == CifsExiting) { - cifs_small_buf_release(buf); + if (ses->server->tcpStatus == CifsExiting) return -ENOENT; - } /* * Ensure that we do not send more than 50 overlapping requests @@ -684,10 +715,8 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, */ rc = wait_for_free_request(ses->server, timeout, optype); - if (rc) { - cifs_small_buf_release(buf); + if (rc) return rc; - } /* * Make sure that we sign in the same order that we send on this socket @@ -697,10 +726,9 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, mutex_lock(&ses->server->srv_mutex); - midQ = ses->server->ops->setup_request(ses, &rqst); + midQ = ses->server->ops->setup_request(ses, rqst); if (IS_ERR(midQ)) { mutex_unlock(&ses->server->srv_mutex); - cifs_small_buf_release(buf); /* Update # of requests on wire to server */ add_credits(ses->server, 1, optype); return PTR_ERR(midQ); @@ -708,7 +736,7 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, midQ->mid_state = MID_REQUEST_SUBMITTED; cifs_in_send_inc(ses->server); - rc = smb_sendv(ses->server, iov, n_vec); + rc = smb_send_rqst(ses->server, rqst, flags); cifs_in_send_dec(ses->server); cifs_save_when_sent(midQ); @@ -716,32 +744,25 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, ses->server->sequence_number -= 2; mutex_unlock(&ses->server->srv_mutex); - if (rc < 0) { - cifs_small_buf_release(buf); + if (rc < 0) goto out; - } - if (timeout == CIFS_ASYNC_OP) { - cifs_small_buf_release(buf); + if (timeout == CIFS_ASYNC_OP) goto out; - } rc = wait_for_response(ses->server, midQ); if (rc != 0) { - send_cancel(ses->server, buf, midQ); + send_cancel(ses->server, rqst, midQ); spin_lock(&GlobalMid_Lock); if (midQ->mid_state == MID_REQUEST_SUBMITTED) { midQ->callback = DeleteMidQEntry; spin_unlock(&GlobalMid_Lock); - cifs_small_buf_release(buf); add_credits(ses->server, 1, optype); return rc; } spin_unlock(&GlobalMid_Lock); } - cifs_small_buf_release(buf); - rc = cifs_sync_mid_result(midQ, ses->server); if (rc != 0) { add_credits(ses->server, 1, optype); @@ -755,8 +776,8 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, } buf = (char *)midQ->resp_buf; - iov[0].iov_base = buf; - iov[0].iov_len = get_rfc1002_length(buf) + 4; + resp_iov->iov_base = buf; + resp_iov->iov_len = get_rfc1002_length(buf) + 4; if (midQ->large_buf) *resp_buf_type = CIFS_LARGE_BUFFER; else @@ -778,12 +799,45 @@ out: } int +SendReceive2(const unsigned int xid, struct cifs_ses *ses, + struct kvec *iov, int n_vec, int *resp_buf_type /* ret */, + const int flags, struct kvec *resp_iov) +{ + struct smb_rqst rqst; + struct kvec *new_iov; + int rc; + + new_iov = kmalloc(sizeof(struct kvec) * (n_vec + 1), GFP_KERNEL); + if (!new_iov) + return -ENOMEM; + + /* 1st iov is a RFC1001 length followed by the rest of the packet */ + memcpy(new_iov + 1, iov, (sizeof(struct kvec) * n_vec)); + + new_iov[0].iov_base = new_iov[1].iov_base; + new_iov[0].iov_len = 4; + new_iov[1].iov_base += 4; + new_iov[1].iov_len -= 4; + + memset(&rqst, 0, sizeof(struct smb_rqst)); + rqst.rq_iov = new_iov; + rqst.rq_nvec = n_vec + 1; + + rc = cifs_send_recv(xid, ses, &rqst, resp_buf_type, flags, resp_iov); + kfree(new_iov); + return rc; +} + +int SendReceive(const unsigned int xid, struct cifs_ses *ses, struct smb_hdr *in_buf, struct smb_hdr *out_buf, int *pbytes_returned, const int timeout) { int rc = 0; struct mid_q_entry *midQ; + unsigned int len = be32_to_cpu(in_buf->smb_buf_length); + struct kvec iov = { .iov_base = in_buf, .iov_len = len }; + struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; if (ses == NULL) { cifs_dbg(VFS, "Null smb session\n"); @@ -801,10 +855,9 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, to the same server. We may make this configurable later or use ses->maxReq */ - if (be32_to_cpu(in_buf->smb_buf_length) > CIFSMaxBufSize + - MAX_CIFS_HDR_SIZE - 4) { + if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { cifs_dbg(VFS, "Illegal length, greater than maximum frame, %d\n", - be32_to_cpu(in_buf->smb_buf_length)); + len); return -EIO; } @@ -835,7 +888,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, midQ->mid_state = MID_REQUEST_SUBMITTED; cifs_in_send_inc(ses->server); - rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length)); + rc = smb_send(ses->server, in_buf, len); cifs_in_send_dec(ses->server); cifs_save_when_sent(midQ); @@ -852,7 +905,7 @@ SendReceive(const unsigned int xid, struct cifs_ses *ses, rc = wait_for_response(ses->server, midQ); if (rc != 0) { - send_cancel(ses->server, in_buf, midQ); + send_cancel(ses->server, &rqst, midQ); spin_lock(&GlobalMid_Lock); if (midQ->mid_state == MID_REQUEST_SUBMITTED) { /* no longer considered to be "in-flight" */ @@ -921,6 +974,9 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, int rstart = 0; struct mid_q_entry *midQ; struct cifs_ses *ses; + unsigned int len = be32_to_cpu(in_buf->smb_buf_length); + struct kvec iov = { .iov_base = in_buf, .iov_len = len }; + struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; if (tcon == NULL || tcon->ses == NULL) { cifs_dbg(VFS, "Null smb session\n"); @@ -940,10 +996,9 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, to the same server. We may make this configurable later or use ses->maxReq */ - if (be32_to_cpu(in_buf->smb_buf_length) > CIFSMaxBufSize + - MAX_CIFS_HDR_SIZE - 4) { + if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { cifs_dbg(VFS, "Illegal length, greater than maximum frame, %d\n", - be32_to_cpu(in_buf->smb_buf_length)); + len); return -EIO; } @@ -972,7 +1027,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, midQ->mid_state = MID_REQUEST_SUBMITTED; cifs_in_send_inc(ses->server); - rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length)); + rc = smb_send(ses->server, in_buf, len); cifs_in_send_dec(ses->server); cifs_save_when_sent(midQ); @@ -1001,7 +1056,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, if (in_buf->Command == SMB_COM_TRANSACTION2) { /* POSIX lock. We send a NT_CANCEL SMB to cause the blocking lock to return. */ - rc = send_cancel(ses->server, in_buf, midQ); + rc = send_cancel(ses->server, &rqst, midQ); if (rc) { cifs_delete_mid(midQ); return rc; @@ -1022,7 +1077,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, rc = wait_for_response(ses->server, midQ); if (rc) { - send_cancel(ses->server, in_buf, midQ); + send_cancel(ses->server, &rqst, midQ); spin_lock(&GlobalMid_Lock); if (midQ->mid_state == MID_REQUEST_SUBMITTED) { /* no longer considered to be "in-flight" */ diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c index 4d24d17bcfc1..504b3c3539dc 100644 --- a/fs/compat_binfmt_elf.c +++ b/fs/compat_binfmt_elf.c @@ -51,22 +51,8 @@ #define elf_prstatus compat_elf_prstatus #define elf_prpsinfo compat_elf_prpsinfo -/* - * Compat version of cputime_to_compat_timeval, perhaps this - * should be an inline in <linux/compat.h>. - */ -static void cputime_to_compat_timeval(const cputime_t cputime, - struct compat_timeval *value) -{ - struct timeval tv; - cputime_to_timeval(cputime, &tv); - value->tv_sec = tv.tv_sec; - value->tv_usec = tv.tv_usec; -} - -#undef cputime_to_timeval -#define cputime_to_timeval cputime_to_compat_timeval - +#undef ns_to_timeval +#define ns_to_timeval ns_to_compat_timeval /* * To use this file, asm/elf.h must define compat_elf_check_arch. diff --git a/fs/crypto/Kconfig b/fs/crypto/Kconfig index f514978f6688..08b46e6e3995 100644 --- a/fs/crypto/Kconfig +++ b/fs/crypto/Kconfig @@ -1,6 +1,5 @@ config FS_ENCRYPTION tristate "FS Encryption (Per-file encryption)" - depends on BLOCK select CRYPTO select CRYPTO_AES select CRYPTO_CBC diff --git a/fs/crypto/Makefile b/fs/crypto/Makefile index f17684c48739..9f6607f17b53 100644 --- a/fs/crypto/Makefile +++ b/fs/crypto/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_FS_ENCRYPTION) += fscrypto.o fscrypto-y := crypto.o fname.o policy.o keyinfo.o +fscrypto-$(CONFIG_BLOCK) += bio.o diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c new file mode 100644 index 000000000000..a409a84f1bca --- /dev/null +++ b/fs/crypto/bio.c @@ -0,0 +1,145 @@ +/* + * This contains encryption functions for per-file encryption. + * + * Copyright (C) 2015, Google, Inc. + * Copyright (C) 2015, Motorola Mobility + * + * Written by Michael Halcrow, 2014. + * + * Filename encryption additions + * Uday Savagaonkar, 2014 + * Encryption policy handling additions + * Ildar Muslukhov, 2014 + * Add fscrypt_pullback_bio_page() + * Jaegeuk Kim, 2015. + * + * This has not yet undergone a rigorous security audit. + * + * The usage of AES-XTS should conform to recommendations in NIST + * Special Publication 800-38E and IEEE P1619/D16. + */ + +#include <linux/pagemap.h> +#include <linux/module.h> +#include <linux/bio.h> +#include <linux/namei.h> +#include "fscrypt_private.h" + +/* + * Call fscrypt_decrypt_page on every single page, reusing the encryption + * context. + */ +static void completion_pages(struct work_struct *work) +{ + struct fscrypt_ctx *ctx = + container_of(work, struct fscrypt_ctx, r.work); + struct bio *bio = ctx->r.bio; + struct bio_vec *bv; + int i; + + bio_for_each_segment_all(bv, bio, i) { + struct page *page = bv->bv_page; + int ret = fscrypt_decrypt_page(page->mapping->host, page, + PAGE_SIZE, 0, page->index); + + if (ret) { + WARN_ON_ONCE(1); + SetPageError(page); + } else { + SetPageUptodate(page); + } + unlock_page(page); + } + fscrypt_release_ctx(ctx); + bio_put(bio); +} + +void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *ctx, struct bio *bio) +{ + INIT_WORK(&ctx->r.work, completion_pages); + ctx->r.bio = bio; + queue_work(fscrypt_read_workqueue, &ctx->r.work); +} +EXPORT_SYMBOL(fscrypt_decrypt_bio_pages); + +void fscrypt_pullback_bio_page(struct page **page, bool restore) +{ + struct fscrypt_ctx *ctx; + struct page *bounce_page; + + /* The bounce data pages are unmapped. */ + if ((*page)->mapping) + return; + + /* The bounce data page is unmapped. */ + bounce_page = *page; + ctx = (struct fscrypt_ctx *)page_private(bounce_page); + + /* restore control page */ + *page = ctx->w.control_page; + + if (restore) + fscrypt_restore_control_page(bounce_page); +} +EXPORT_SYMBOL(fscrypt_pullback_bio_page); + +int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk, + sector_t pblk, unsigned int len) +{ + struct fscrypt_ctx *ctx; + struct page *ciphertext_page = NULL; + struct bio *bio; + int ret, err = 0; + + BUG_ON(inode->i_sb->s_blocksize != PAGE_SIZE); + + ctx = fscrypt_get_ctx(inode, GFP_NOFS); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + ciphertext_page = fscrypt_alloc_bounce_page(ctx, GFP_NOWAIT); + if (IS_ERR(ciphertext_page)) { + err = PTR_ERR(ciphertext_page); + goto errout; + } + + while (len--) { + err = fscrypt_do_page_crypto(inode, FS_ENCRYPT, lblk, + ZERO_PAGE(0), ciphertext_page, + PAGE_SIZE, 0, GFP_NOFS); + if (err) + goto errout; + + bio = bio_alloc(GFP_NOWAIT, 1); + if (!bio) { + err = -ENOMEM; + goto errout; + } + bio->bi_bdev = inode->i_sb->s_bdev; + bio->bi_iter.bi_sector = + pblk << (inode->i_sb->s_blocksize_bits - 9); + bio_set_op_attrs(bio, REQ_OP_WRITE, 0); + ret = bio_add_page(bio, ciphertext_page, + inode->i_sb->s_blocksize, 0); + if (ret != inode->i_sb->s_blocksize) { + /* should never happen! */ + WARN_ON(1); + bio_put(bio); + err = -EIO; + goto errout; + } + err = submit_bio_wait(bio); + if ((err == 0) && bio->bi_error) + err = -EIO; + bio_put(bio); + if (err) + goto errout; + lblk++; + pblk++; + } + err = 0; +errout: + fscrypt_release_ctx(ctx); + return err; +} +EXPORT_SYMBOL(fscrypt_zeroout_range); diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c index ac8e4f6a3773..02a7a9286449 100644 --- a/fs/crypto/crypto.c +++ b/fs/crypto/crypto.c @@ -24,7 +24,6 @@ #include <linux/module.h> #include <linux/scatterlist.h> #include <linux/ratelimit.h> -#include <linux/bio.h> #include <linux/dcache.h> #include <linux/namei.h> #include "fscrypt_private.h" @@ -44,7 +43,7 @@ static mempool_t *fscrypt_bounce_page_pool = NULL; static LIST_HEAD(fscrypt_free_ctxs); static DEFINE_SPINLOCK(fscrypt_ctx_lock); -static struct workqueue_struct *fscrypt_read_workqueue; +struct workqueue_struct *fscrypt_read_workqueue; static DEFINE_MUTEX(fscrypt_init_mutex); static struct kmem_cache *fscrypt_ctx_cachep; @@ -141,16 +140,10 @@ static void page_crypt_complete(struct crypto_async_request *req, int res) complete(&ecr->completion); } -typedef enum { - FS_DECRYPT = 0, - FS_ENCRYPT, -} fscrypt_direction_t; - -static int do_page_crypto(const struct inode *inode, - fscrypt_direction_t rw, u64 lblk_num, - struct page *src_page, struct page *dest_page, - unsigned int len, unsigned int offs, - gfp_t gfp_flags) +int fscrypt_do_page_crypto(const struct inode *inode, fscrypt_direction_t rw, + u64 lblk_num, struct page *src_page, + struct page *dest_page, unsigned int len, + unsigned int offs, gfp_t gfp_flags) { struct { __le64 index; @@ -205,7 +198,8 @@ static int do_page_crypto(const struct inode *inode, return 0; } -static struct page *alloc_bounce_page(struct fscrypt_ctx *ctx, gfp_t gfp_flags) +struct page *fscrypt_alloc_bounce_page(struct fscrypt_ctx *ctx, + gfp_t gfp_flags) { ctx->w.bounce_page = mempool_alloc(fscrypt_bounce_page_pool, gfp_flags); if (ctx->w.bounce_page == NULL) @@ -260,9 +254,9 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, if (inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES) { /* with inplace-encryption we just encrypt the page */ - err = do_page_crypto(inode, FS_ENCRYPT, lblk_num, - page, ciphertext_page, - len, offs, gfp_flags); + err = fscrypt_do_page_crypto(inode, FS_ENCRYPT, lblk_num, page, + ciphertext_page, len, offs, + gfp_flags); if (err) return ERR_PTR(err); @@ -276,14 +270,14 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, return (struct page *)ctx; /* The encryption operation will require a bounce page. */ - ciphertext_page = alloc_bounce_page(ctx, gfp_flags); + ciphertext_page = fscrypt_alloc_bounce_page(ctx, gfp_flags); if (IS_ERR(ciphertext_page)) goto errout; ctx->w.control_page = page; - err = do_page_crypto(inode, FS_ENCRYPT, lblk_num, - page, ciphertext_page, - len, offs, gfp_flags); + err = fscrypt_do_page_crypto(inode, FS_ENCRYPT, lblk_num, + page, ciphertext_page, len, offs, + gfp_flags); if (err) { ciphertext_page = ERR_PTR(err); goto errout; @@ -320,72 +314,11 @@ int fscrypt_decrypt_page(const struct inode *inode, struct page *page, if (!(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES)) BUG_ON(!PageLocked(page)); - return do_page_crypto(inode, FS_DECRYPT, lblk_num, page, page, len, - offs, GFP_NOFS); + return fscrypt_do_page_crypto(inode, FS_DECRYPT, lblk_num, page, page, + len, offs, GFP_NOFS); } EXPORT_SYMBOL(fscrypt_decrypt_page); -int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk, - sector_t pblk, unsigned int len) -{ - struct fscrypt_ctx *ctx; - struct page *ciphertext_page = NULL; - struct bio *bio; - int ret, err = 0; - - BUG_ON(inode->i_sb->s_blocksize != PAGE_SIZE); - - ctx = fscrypt_get_ctx(inode, GFP_NOFS); - if (IS_ERR(ctx)) - return PTR_ERR(ctx); - - ciphertext_page = alloc_bounce_page(ctx, GFP_NOWAIT); - if (IS_ERR(ciphertext_page)) { - err = PTR_ERR(ciphertext_page); - goto errout; - } - - while (len--) { - err = do_page_crypto(inode, FS_ENCRYPT, lblk, - ZERO_PAGE(0), ciphertext_page, - PAGE_SIZE, 0, GFP_NOFS); - if (err) - goto errout; - - bio = bio_alloc(GFP_NOWAIT, 1); - if (!bio) { - err = -ENOMEM; - goto errout; - } - bio->bi_bdev = inode->i_sb->s_bdev; - bio->bi_iter.bi_sector = - pblk << (inode->i_sb->s_blocksize_bits - 9); - bio_set_op_attrs(bio, REQ_OP_WRITE, 0); - ret = bio_add_page(bio, ciphertext_page, - inode->i_sb->s_blocksize, 0); - if (ret != inode->i_sb->s_blocksize) { - /* should never happen! */ - WARN_ON(1); - bio_put(bio); - err = -EIO; - goto errout; - } - err = submit_bio_wait(bio); - if ((err == 0) && bio->bi_error) - err = -EIO; - bio_put(bio); - if (err) - goto errout; - lblk++; - pblk++; - } - err = 0; -errout: - fscrypt_release_ctx(ctx); - return err; -} -EXPORT_SYMBOL(fscrypt_zeroout_range); - /* * Validate dentries for encrypted directories to make sure we aren't * potentially caching stale data after a key has been added or @@ -442,64 +375,6 @@ const struct dentry_operations fscrypt_d_ops = { }; EXPORT_SYMBOL(fscrypt_d_ops); -/* - * Call fscrypt_decrypt_page on every single page, reusing the encryption - * context. - */ -static void completion_pages(struct work_struct *work) -{ - struct fscrypt_ctx *ctx = - container_of(work, struct fscrypt_ctx, r.work); - struct bio *bio = ctx->r.bio; - struct bio_vec *bv; - int i; - - bio_for_each_segment_all(bv, bio, i) { - struct page *page = bv->bv_page; - int ret = fscrypt_decrypt_page(page->mapping->host, page, - PAGE_SIZE, 0, page->index); - - if (ret) { - WARN_ON_ONCE(1); - SetPageError(page); - } else { - SetPageUptodate(page); - } - unlock_page(page); - } - fscrypt_release_ctx(ctx); - bio_put(bio); -} - -void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *ctx, struct bio *bio) -{ - INIT_WORK(&ctx->r.work, completion_pages); - ctx->r.bio = bio; - queue_work(fscrypt_read_workqueue, &ctx->r.work); -} -EXPORT_SYMBOL(fscrypt_decrypt_bio_pages); - -void fscrypt_pullback_bio_page(struct page **page, bool restore) -{ - struct fscrypt_ctx *ctx; - struct page *bounce_page; - - /* The bounce data pages are unmapped. */ - if ((*page)->mapping) - return; - - /* The bounce data page is unmapped. */ - bounce_page = *page; - ctx = (struct fscrypt_ctx *)page_private(bounce_page); - - /* restore control page */ - *page = ctx->w.control_page; - - if (restore) - fscrypt_restore_control_page(bounce_page); -} -EXPORT_SYMBOL(fscrypt_pullback_bio_page); - void fscrypt_restore_control_page(struct page *page) { struct fscrypt_ctx *ctx; diff --git a/fs/crypto/fname.c b/fs/crypto/fname.c index 56ad9d195f18..13052b85c393 100644 --- a/fs/crypto/fname.c +++ b/fs/crypto/fname.c @@ -332,7 +332,7 @@ int fscrypt_fname_usr_to_disk(struct inode *inode, * in a directory. Consequently, a user space name cannot be mapped to * a disk-space name */ - return -EACCES; + return -ENOKEY; } EXPORT_SYMBOL(fscrypt_fname_usr_to_disk); @@ -367,7 +367,7 @@ int fscrypt_setup_filename(struct inode *dir, const struct qstr *iname, return 0; } if (!lookup) - return -EACCES; + return -ENOKEY; /* * We don't have the key and we are doing a lookup; decode the diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h index aeab032d7d35..fdbb8af32eaf 100644 --- a/fs/crypto/fscrypt_private.h +++ b/fs/crypto/fscrypt_private.h @@ -11,7 +11,7 @@ #ifndef _FSCRYPT_PRIVATE_H #define _FSCRYPT_PRIVATE_H -#include <linux/fscrypto.h> +#include <linux/fscrypt_supp.h> #define FS_FNAME_CRYPTO_DIGEST_SIZE 32 @@ -71,6 +71,11 @@ struct fscrypt_info { u8 ci_master_key[FS_KEY_DESCRIPTOR_SIZE]; }; +typedef enum { + FS_DECRYPT = 0, + FS_ENCRYPT, +} fscrypt_direction_t; + #define FS_CTX_REQUIRES_FREE_ENCRYPT_FL 0x00000001 #define FS_CTX_HAS_BOUNCE_BUFFER_FL 0x00000002 @@ -81,11 +86,20 @@ struct fscrypt_completion_result { #define DECLARE_FS_COMPLETION_RESULT(ecr) \ struct fscrypt_completion_result ecr = { \ - COMPLETION_INITIALIZER((ecr).completion), 0 } + COMPLETION_INITIALIZER_ONSTACK((ecr).completion), 0 } /* crypto.c */ -int fscrypt_initialize(unsigned int cop_flags); +extern int fscrypt_initialize(unsigned int cop_flags); +extern struct workqueue_struct *fscrypt_read_workqueue; +extern int fscrypt_do_page_crypto(const struct inode *inode, + fscrypt_direction_t rw, u64 lblk_num, + struct page *src_page, + struct page *dest_page, + unsigned int len, unsigned int offs, + gfp_t gfp_flags); +extern struct page *fscrypt_alloc_bounce_page(struct fscrypt_ctx *ctx, + gfp_t gfp_flags); /* keyinfo.c */ extern int fscrypt_get_crypt_info(struct inode *); diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c index 95cd4c3b06c3..02eb6b9e4438 100644 --- a/fs/crypto/keyinfo.c +++ b/fs/crypto/keyinfo.c @@ -77,26 +77,22 @@ out: static int validate_user_key(struct fscrypt_info *crypt_info, struct fscrypt_context *ctx, u8 *raw_key, - u8 *prefix, int prefix_size) + const char *prefix) { - u8 *full_key_descriptor; + char *description; struct key *keyring_key; struct fscrypt_key *master_key; const struct user_key_payload *ukp; - int full_key_len = prefix_size + (FS_KEY_DESCRIPTOR_SIZE * 2) + 1; int res; - full_key_descriptor = kmalloc(full_key_len, GFP_NOFS); - if (!full_key_descriptor) + description = kasprintf(GFP_NOFS, "%s%*phN", prefix, + FS_KEY_DESCRIPTOR_SIZE, + ctx->master_key_descriptor); + if (!description) return -ENOMEM; - memcpy(full_key_descriptor, prefix, prefix_size); - sprintf(full_key_descriptor + prefix_size, - "%*phN", FS_KEY_DESCRIPTOR_SIZE, - ctx->master_key_descriptor); - full_key_descriptor[full_key_len - 1] = '\0'; - keyring_key = request_key(&key_type_logon, full_key_descriptor, NULL); - kfree(full_key_descriptor); + keyring_key = request_key(&key_type_logon, description, NULL); + kfree(description); if (IS_ERR(keyring_key)) return PTR_ERR(keyring_key); @@ -206,12 +202,15 @@ retry: res = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx)); if (res < 0) { - if (!fscrypt_dummy_context_enabled(inode)) + if (!fscrypt_dummy_context_enabled(inode) || + inode->i_sb->s_cop->is_encrypted(inode)) return res; + /* Fake up a context for an unencrypted directory */ + memset(&ctx, 0, sizeof(ctx)); ctx.format = FS_ENCRYPTION_CONTEXT_FORMAT_V1; ctx.contents_encryption_mode = FS_ENCRYPTION_MODE_AES_256_XTS; ctx.filenames_encryption_mode = FS_ENCRYPTION_MODE_AES_256_CTS; - ctx.flags = 0; + memset(ctx.master_key_descriptor, 0x42, FS_KEY_DESCRIPTOR_SIZE); } else if (res != sizeof(ctx)) { return -EINVAL; } @@ -247,21 +246,10 @@ retry: if (!raw_key) goto out; - if (fscrypt_dummy_context_enabled(inode)) { - memset(raw_key, 0x42, keysize/2); - memset(raw_key+keysize/2, 0x24, keysize - (keysize/2)); - goto got_key; - } - - res = validate_user_key(crypt_info, &ctx, raw_key, - FS_KEY_DESC_PREFIX, FS_KEY_DESC_PREFIX_SIZE); + res = validate_user_key(crypt_info, &ctx, raw_key, FS_KEY_DESC_PREFIX); if (res && inode->i_sb->s_cop->key_prefix) { - u8 *prefix = NULL; - int prefix_size, res2; - - prefix_size = inode->i_sb->s_cop->key_prefix(inode, &prefix); - res2 = validate_user_key(crypt_info, &ctx, raw_key, - prefix, prefix_size); + int res2 = validate_user_key(crypt_info, &ctx, raw_key, + inode->i_sb->s_cop->key_prefix); if (res2) { if (res2 == -ENOKEY) res = -ENOKEY; @@ -270,7 +258,6 @@ retry: } else if (res) { goto out; } -got_key: ctfm = crypto_alloc_skcipher(cipher_str, 0, 0); if (!ctfm || IS_ERR(ctfm)) { res = ctfm ? PTR_ERR(ctfm) : -ENOMEM; diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index d6cd7ea4851d..14b76da71269 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -13,37 +13,20 @@ #include <linux/mount.h> #include "fscrypt_private.h" -static int inode_has_encryption_context(struct inode *inode) -{ - if (!inode->i_sb->s_cop->get_context) - return 0; - return (inode->i_sb->s_cop->get_context(inode, NULL, 0L) > 0); -} - /* - * check whether the policy is consistent with the encryption context - * for the inode + * check whether an encryption policy is consistent with an encryption context */ -static int is_encryption_context_consistent_with_policy(struct inode *inode, +static bool is_encryption_context_consistent_with_policy( + const struct fscrypt_context *ctx, const struct fscrypt_policy *policy) { - struct fscrypt_context ctx; - int res; - - if (!inode->i_sb->s_cop->get_context) - return 0; - - res = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx)); - if (res != sizeof(ctx)) - return 0; - - return (memcmp(ctx.master_key_descriptor, policy->master_key_descriptor, - FS_KEY_DESCRIPTOR_SIZE) == 0 && - (ctx.flags == policy->flags) && - (ctx.contents_encryption_mode == - policy->contents_encryption_mode) && - (ctx.filenames_encryption_mode == - policy->filenames_encryption_mode)); + return memcmp(ctx->master_key_descriptor, policy->master_key_descriptor, + FS_KEY_DESCRIPTOR_SIZE) == 0 && + (ctx->flags == policy->flags) && + (ctx->contents_encryption_mode == + policy->contents_encryption_mode) && + (ctx->filenames_encryption_mode == + policy->filenames_encryption_mode); } static int create_encryption_context_from_policy(struct inode *inode, @@ -66,20 +49,12 @@ static int create_encryption_context_from_policy(struct inode *inode, FS_KEY_DESCRIPTOR_SIZE); if (!fscrypt_valid_contents_enc_mode( - policy->contents_encryption_mode)) { - printk(KERN_WARNING - "%s: Invalid contents encryption mode %d\n", __func__, - policy->contents_encryption_mode); + policy->contents_encryption_mode)) return -EINVAL; - } if (!fscrypt_valid_filenames_enc_mode( - policy->filenames_encryption_mode)) { - printk(KERN_WARNING - "%s: Invalid filenames encryption mode %d\n", __func__, - policy->filenames_encryption_mode); + policy->filenames_encryption_mode)) return -EINVAL; - } if (policy->flags & ~FS_POLICY_FLAGS_VALID) return -EINVAL; @@ -98,6 +73,7 @@ int fscrypt_ioctl_set_policy(struct file *filp, const void __user *arg) struct fscrypt_policy policy; struct inode *inode = file_inode(filp); int ret; + struct fscrypt_context ctx; if (copy_from_user(&policy, arg, sizeof(policy))) return -EFAULT; @@ -114,9 +90,10 @@ int fscrypt_ioctl_set_policy(struct file *filp, const void __user *arg) inode_lock(inode); - if (!inode_has_encryption_context(inode)) { + ret = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx)); + if (ret == -ENODATA) { if (!S_ISDIR(inode->i_mode)) - ret = -EINVAL; + ret = -ENOTDIR; else if (!inode->i_sb->s_cop->empty_dir) ret = -EOPNOTSUPP; else if (!inode->i_sb->s_cop->empty_dir(inode)) @@ -124,12 +101,14 @@ int fscrypt_ioctl_set_policy(struct file *filp, const void __user *arg) else ret = create_encryption_context_from_policy(inode, &policy); - } else if (!is_encryption_context_consistent_with_policy(inode, - &policy)) { - printk(KERN_WARNING - "%s: Policy inconsistent with encryption context\n", - __func__); - ret = -EINVAL; + } else if (ret == sizeof(ctx) && + is_encryption_context_consistent_with_policy(&ctx, + &policy)) { + /* The file already uses the same encryption policy. */ + ret = 0; + } else if (ret >= 0 || ret == -ERANGE) { + /* The file already uses a different encryption policy. */ + ret = -EEXIST; } inode_unlock(inode); @@ -151,8 +130,10 @@ int fscrypt_ioctl_get_policy(struct file *filp, void __user *arg) return -ENODATA; res = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx)); + if (res < 0 && res != -ERANGE) + return res; if (res != sizeof(ctx)) - return -ENODATA; + return -EINVAL; if (ctx.format != FS_ENCRYPTION_CONTEXT_FORMAT_V1) return -EINVAL; @@ -217,9 +198,9 @@ EXPORT_SYMBOL(fscrypt_has_permitted_context); * @parent: Parent inode from which the context is inherited. * @child: Child inode that inherits the context from @parent. * @fs_data: private data given by FS. - * @preload: preload child i_crypt_info + * @preload: preload child i_crypt_info if true * - * Return: Zero on success, non-zero otherwise + * Return: 0 on success, -errno on failure */ int fscrypt_inherit_context(struct inode *parent, struct inode *child, void *fs_data, bool preload) @@ -240,19 +221,11 @@ int fscrypt_inherit_context(struct inode *parent, struct inode *child, return -ENOKEY; ctx.format = FS_ENCRYPTION_CONTEXT_FORMAT_V1; - if (fscrypt_dummy_context_enabled(parent)) { - ctx.contents_encryption_mode = FS_ENCRYPTION_MODE_AES_256_XTS; - ctx.filenames_encryption_mode = FS_ENCRYPTION_MODE_AES_256_CTS; - ctx.flags = 0; - memset(ctx.master_key_descriptor, 0x42, FS_KEY_DESCRIPTOR_SIZE); - res = 0; - } else { - ctx.contents_encryption_mode = ci->ci_data_mode; - ctx.filenames_encryption_mode = ci->ci_filename_mode; - ctx.flags = ci->ci_flags; - memcpy(ctx.master_key_descriptor, ci->ci_master_key, - FS_KEY_DESCRIPTOR_SIZE); - } + ctx.contents_encryption_mode = ci->ci_data_mode; + ctx.filenames_encryption_mode = ci->ci_filename_mode; + ctx.flags = ci->ci_flags; + memcpy(ctx.master_key_descriptor, ci->ci_master_key, + FS_KEY_DESCRIPTOR_SIZE); get_random_bytes(ctx.nonce, FS_KEY_DERIVATION_NONCE_SIZE); res = parent->i_sb->s_cop->set_context(child, &ctx, sizeof(ctx), fs_data); diff --git a/fs/dax.c b/fs/dax.c index c45598b912e1..e9cf8b4cd234 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1086,8 +1086,12 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, loff_t pos = iocb->ki_pos, ret = 0, done = 0; unsigned flags = 0; - if (iov_iter_rw(iter) == WRITE) + if (iov_iter_rw(iter) == WRITE) { + lockdep_assert_held_exclusive(&inode->i_rwsem); flags |= IOMAP_WRITE; + } else { + lockdep_assert_held(&inode->i_rwsem); + } while (iov_iter_count(iter)) { ret = iomap_apply(inode, pos, iov_iter_count(iter), flags, ops, diff --git a/fs/exofs/sys.c b/fs/exofs/sys.c index 5e6a2c0a1f0b..1f7d5e46cdda 100644 --- a/fs/exofs/sys.c +++ b/fs/exofs/sys.c @@ -122,7 +122,7 @@ void exofs_sysfs_dbg_print(void) list_for_each_entry_safe(k_name, k_tmp, &exofs_kset->list, entry) { printk(KERN_INFO "%s: name %s ref %d\n", __func__, kobject_name(k_name), - (int)atomic_read(&k_name->kref.refcount)); + (int)kref_read(&k_name->kref)); } #endif } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 2163c1e69f2a..01d52b98f9a7 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -32,7 +32,11 @@ #include <linux/percpu_counter.h> #include <linux/ratelimit.h> #include <crypto/hash.h> -#include <linux/fscrypto.h> +#ifdef CONFIG_EXT4_FS_ENCRYPTION +#include <linux/fscrypt_supp.h> +#else +#include <linux/fscrypt_notsupp.h> +#endif #include <linux/falloc.h> #include <linux/percpu-rwsem.h> #ifdef __KERNEL__ @@ -679,6 +683,16 @@ struct fsxattr { #define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR #define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR +#define EXT4_IOC_SHUTDOWN _IOR ('X', 125, __u32) + +/* + * Flags for going down operation + */ +#define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */ +#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */ +#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */ + + #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* * ioctl commands in 32 bit emulation @@ -1343,11 +1357,6 @@ struct ext4_super_block { /* Number of quota types we support */ #define EXT4_MAXQUOTAS 3 -#ifdef CONFIG_EXT4_FS_ENCRYPTION -#define EXT4_KEY_DESC_PREFIX "ext4:" -#define EXT4_KEY_DESC_PREFIX_SIZE 5 -#endif - /* * fourth extended-fs super-block data in memory */ @@ -1404,8 +1413,7 @@ struct ext4_sb_info { struct journal_s *s_journal; struct list_head s_orphan; struct mutex s_orphan_lock; - unsigned long s_resize_flags; /* Flags indicating if there - is a resizer */ + unsigned long s_ext4_flags; /* Ext4 superblock flags */ unsigned long s_commit_interval; u32 s_max_batch_time; u32 s_min_batch_time; @@ -1517,12 +1525,6 @@ struct ext4_sb_info { /* Barrier between changing inodes' journal flags and writepages ops. */ struct percpu_rw_semaphore s_journal_flag_rwsem; - - /* Encryption support */ -#ifdef CONFIG_EXT4_FS_ENCRYPTION - u8 key_prefix[EXT4_KEY_DESC_PREFIX_SIZE]; - u8 key_prefix_size; -#endif }; static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb) @@ -1845,6 +1847,18 @@ static inline bool ext4_has_incompat_features(struct super_block *sb) } /* + * Superblock flags + */ +#define EXT4_FLAGS_RESIZING 0 +#define EXT4_FLAGS_SHUTDOWN 1 + +static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi) +{ + return test_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); +} + + +/* * Default values for user and/or group using reserved blocks */ #define EXT4_DEF_RESUID 0 @@ -2320,28 +2334,6 @@ static inline int ext4_fname_setup_filename(struct inode *dir, } static inline void ext4_fname_free_filename(struct ext4_filename *fname) { } -#define fscrypt_set_d_op(i) -#define fscrypt_get_ctx fscrypt_notsupp_get_ctx -#define fscrypt_release_ctx fscrypt_notsupp_release_ctx -#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page -#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page -#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages -#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page -#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page -#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range -#define fscrypt_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy -#define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_get_policy -#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context -#define fscrypt_inherit_context fscrypt_notsupp_inherit_context -#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info -#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info -#define fscrypt_setup_filename fscrypt_notsupp_setup_filename -#define fscrypt_free_filename fscrypt_notsupp_free_filename -#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size -#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer -#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer -#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr -#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk #endif /* dir.c */ @@ -3034,7 +3026,7 @@ extern int ext4_inline_data_fiemap(struct inode *inode, extern int ext4_try_to_evict_inline_data(handle_t *handle, struct inode *inode, int needed); -extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline); +extern int ext4_inline_data_truncate(struct inode *inode, int *has_inline); extern int ext4_convert_inline_data(struct inode *inode); @@ -3228,7 +3220,6 @@ static inline void ext4_inode_resume_unlocked_dio(struct inode *inode) EXT4_WQ_HASH_SZ]) extern wait_queue_head_t ext4__ioend_wq[EXT4_WQ_HASH_SZ]; -#define EXT4_RESIZING 0 extern int ext4_resize_begin(struct super_block *sb); extern void ext4_resize_end(struct super_block *sb); diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index e770c1ee4613..dd106b1d5d89 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -43,6 +43,10 @@ static int ext4_journal_check_start(struct super_block *sb) journal_t *journal; might_sleep(); + + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return -EIO; + if (sb->s_flags & MS_RDONLY) return -EROFS; WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); @@ -161,6 +165,13 @@ int __ext4_journal_get_write_access(const char *where, unsigned int line, might_sleep(); if (ext4_handle_valid(handle)) { + struct super_block *sb; + + sb = handle->h_transaction->t_journal->j_private; + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) { + jbd2_journal_abort_handle(handle); + return -EIO; + } err = jbd2_journal_get_write_access(handle, bh); if (err) ext4_journal_abort_handle(where, line, __func__, bh, diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3e295d3350a9..2a97dff87b96 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5334,7 +5334,8 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, ext4_lblk_t stop, *iterator, ex_start, ex_end; /* Let path point to the last extent */ - path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, 0); + path = ext4_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, + EXT4_EX_NOCACHE); if (IS_ERR(path)) return PTR_ERR(path); @@ -5343,15 +5344,15 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, if (!extent) goto out; - stop = le32_to_cpu(extent->ee_block) + - ext4_ext_get_actual_len(extent); + stop = le32_to_cpu(extent->ee_block); /* * In case of left shift, Don't start shifting extents until we make * sure the hole is big enough to accommodate the shift. */ if (SHIFT == SHIFT_LEFT) { - path = ext4_find_extent(inode, start - 1, &path, 0); + path = ext4_find_extent(inode, start - 1, &path, + EXT4_EX_NOCACHE); if (IS_ERR(path)) return PTR_ERR(path); depth = path->p_depth; @@ -5383,9 +5384,14 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, else iterator = &stop; - /* Its safe to start updating extents */ - while (start < stop) { - path = ext4_find_extent(inode, *iterator, &path, 0); + /* + * Its safe to start updating extents. Start and stop are unsigned, so + * in case of right shift if extent with 0 block is reached, iterator + * becomes NULL to indicate the end of the loop. + */ + while (iterator && start <= stop) { + path = ext4_find_extent(inode, *iterator, &path, + EXT4_EX_NOCACHE); if (IS_ERR(path)) return PTR_ERR(path); depth = path->p_depth; @@ -5412,8 +5418,11 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, ext4_ext_get_actual_len(extent); } else { extent = EXT_FIRST_EXTENT(path[depth].p_hdr); - *iterator = le32_to_cpu(extent->ee_block) > 0 ? - le32_to_cpu(extent->ee_block) - 1 : 0; + if (le32_to_cpu(extent->ee_block) > 0) + *iterator = le32_to_cpu(extent->ee_block) - 1; + else + /* Beginning is reached, end of the loop */ + iterator = NULL; /* Update path extent in case we need to stop */ while (le32_to_cpu(extent->ee_block) < start) extent++; diff --git a/fs/ext4/file.c b/fs/ext4/file.c index d663d3d7c81c..87e11dfe3cde 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -57,6 +57,9 @@ static ssize_t ext4_dax_read_iter(struct kiocb *iocb, struct iov_iter *to) static ssize_t ext4_file_read_iter(struct kiocb *iocb, struct iov_iter *to) { + if (unlikely(ext4_forced_shutdown(EXT4_SB(file_inode(iocb->ki_filp)->i_sb)))) + return -EIO; + if (!iov_iter_count(to)) return 0; /* skip atime */ @@ -175,7 +178,6 @@ ext4_dax_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct inode *inode = file_inode(iocb->ki_filp); ssize_t ret; - bool overwrite = false; inode_lock(inode); ret = ext4_write_checks(iocb, from); @@ -188,16 +190,9 @@ ext4_dax_write_iter(struct kiocb *iocb, struct iov_iter *from) if (ret) goto out; - if (ext4_overwrite_io(inode, iocb->ki_pos, iov_iter_count(from))) { - overwrite = true; - downgrade_write(&inode->i_rwsem); - } ret = dax_iomap_rw(iocb, from, &ext4_iomap_ops); out: - if (!overwrite) - inode_unlock(inode); - else - inode_unlock_shared(inode); + inode_unlock(inode); if (ret > 0) ret = generic_write_sync(iocb, ret); return ret; @@ -213,6 +208,9 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) int overwrite = 0; ssize_t ret; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + #ifdef CONFIG_FS_DAX if (IS_DAX(inode)) return ext4_dax_write_iter(iocb, from); @@ -348,6 +346,9 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file->f_mapping->host; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + if (ext4_encrypted_inode(inode)) { int err = fscrypt_get_encryption_info(inode); if (err) @@ -375,6 +376,9 @@ static int ext4_file_open(struct inode * inode, struct file * filp) char buf[64], *cp; int ret; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + if (unlikely(!(sbi->s_mount_flags & EXT4_MF_MNTDIR_SAMPLED) && !(sb->s_flags & MS_RDONLY))) { sbi->s_mount_flags |= EXT4_MF_MNTDIR_SAMPLED; diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 88effb1053c7..9d549608fd30 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -100,6 +100,9 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) tid_t commit_tid; bool needs_barrier = false; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + J_ASSERT(ext4_journal_current_handle() == NULL); trace_ext4_sync_file_enter(file, datasync); diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c index e026aa941fd5..38b8a96eb97c 100644 --- a/fs/ext4/hash.c +++ b/fs/ext4/hash.c @@ -10,7 +10,8 @@ */ #include <linux/fs.h> -#include <linux/cryptohash.h> +#include <linux/compiler.h> +#include <linux/bitops.h> #include "ext4.h" #define DELTA 0x9E3779B9 @@ -32,6 +33,74 @@ static void TEA_transform(__u32 buf[4], __u32 const in[]) buf[1] += b1; } +/* F, G and H are basic MD4 functions: selection, majority, parity */ +#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) +#define G(x, y, z) (((x) & (y)) + (((x) ^ (y)) & (z))) +#define H(x, y, z) ((x) ^ (y) ^ (z)) + +/* + * The generic round function. The application is so specific that + * we don't bother protecting all the arguments with parens, as is generally + * good macro practice, in favor of extra legibility. + * Rotation is separate from addition to prevent recomputation + */ +#define ROUND(f, a, b, c, d, x, s) \ + (a += f(b, c, d) + x, a = rol32(a, s)) +#define K1 0 +#define K2 013240474631UL +#define K3 015666365641UL + +/* + * Basic cut-down MD4 transform. Returns only 32 bits of result. + */ +static __u32 half_md4_transform(__u32 buf[4], __u32 const in[8]) +{ + __u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; + + /* Round 1 */ + ROUND(F, a, b, c, d, in[0] + K1, 3); + ROUND(F, d, a, b, c, in[1] + K1, 7); + ROUND(F, c, d, a, b, in[2] + K1, 11); + ROUND(F, b, c, d, a, in[3] + K1, 19); + ROUND(F, a, b, c, d, in[4] + K1, 3); + ROUND(F, d, a, b, c, in[5] + K1, 7); + ROUND(F, c, d, a, b, in[6] + K1, 11); + ROUND(F, b, c, d, a, in[7] + K1, 19); + + /* Round 2 */ + ROUND(G, a, b, c, d, in[1] + K2, 3); + ROUND(G, d, a, b, c, in[3] + K2, 5); + ROUND(G, c, d, a, b, in[5] + K2, 9); + ROUND(G, b, c, d, a, in[7] + K2, 13); + ROUND(G, a, b, c, d, in[0] + K2, 3); + ROUND(G, d, a, b, c, in[2] + K2, 5); + ROUND(G, c, d, a, b, in[4] + K2, 9); + ROUND(G, b, c, d, a, in[6] + K2, 13); + + /* Round 3 */ + ROUND(H, a, b, c, d, in[3] + K3, 3); + ROUND(H, d, a, b, c, in[7] + K3, 9); + ROUND(H, c, d, a, b, in[2] + K3, 11); + ROUND(H, b, c, d, a, in[6] + K3, 15); + ROUND(H, a, b, c, d, in[1] + K3, 3); + ROUND(H, d, a, b, c, in[5] + K3, 9); + ROUND(H, c, d, a, b, in[0] + K3, 11); + ROUND(H, b, c, d, a, in[4] + K3, 15); + + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; + + return buf[1]; /* "most hashed" word */ +} +#undef ROUND +#undef K1 +#undef K2 +#undef K3 +#undef F +#undef G +#undef H /* The old legacy hash */ static __u32 dx_hack_hash_unsigned(const char *name, int len) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index e57e8d90ea54..b14bae2598bc 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -764,6 +764,9 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, if (!dir || !dir->i_nlink) return ERR_PTR(-EPERM); + if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + return ERR_PTR(-EIO); + if ((ext4_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb))) && (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) { @@ -771,7 +774,7 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, if (err) return ERR_PTR(err); if (!fscrypt_has_encryption_key(dir)) - return ERR_PTR(-EPERM); + return ERR_PTR(-ENOKEY); if (!handle) nblocks += EXT4_DATA_TRANS_BLOCKS(dir->i_sb); encrypt = 1; diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 437df6a1a841..30a9f210d1e3 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -215,6 +215,9 @@ static void ext4_write_inline_data(struct inode *inode, struct ext4_iloc *iloc, struct ext4_inode *raw_inode; int cp_len = 0; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return; + BUG_ON(!EXT4_I(inode)->i_inline_off); BUG_ON(pos + len > EXT4_I(inode)->i_inline_size); @@ -381,7 +384,7 @@ out: static int ext4_prepare_inline_data(handle_t *handle, struct inode *inode, unsigned int len) { - int ret, size; + int ret, size, no_expand; struct ext4_inode_info *ei = EXT4_I(inode); if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) @@ -391,15 +394,14 @@ static int ext4_prepare_inline_data(handle_t *handle, struct inode *inode, if (size < len) return -ENOSPC; - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); if (ei->i_inline_off) ret = ext4_update_inline_data(handle, inode, len); else ret = ext4_create_inline_data(handle, inode, len); - up_write(&EXT4_I(inode)->xattr_sem); - + ext4_write_unlock_xattr(inode, &no_expand); return ret; } @@ -533,7 +535,7 @@ static int ext4_convert_inline_data_to_extent(struct address_space *mapping, struct inode *inode, unsigned flags) { - int ret, needed_blocks; + int ret, needed_blocks, no_expand; handle_t *handle = NULL; int retries = 0, sem_held = 0; struct page *page = NULL; @@ -573,7 +575,7 @@ retry: goto out; } - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); sem_held = 1; /* If some one has already done this for us, just exit. */ if (!ext4_has_inline_data(inode)) { @@ -610,7 +612,7 @@ retry: put_page(page); page = NULL; ext4_orphan_add(handle, inode); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); sem_held = 0; ext4_journal_stop(handle); handle = NULL; @@ -636,7 +638,7 @@ out: put_page(page); } if (sem_held) - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); if (handle) ext4_journal_stop(handle); brelse(iloc.bh); @@ -729,7 +731,7 @@ convert: int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, unsigned copied, struct page *page) { - int ret; + int ret, no_expand; void *kaddr; struct ext4_iloc iloc; @@ -747,7 +749,7 @@ int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, goto out; } - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); BUG_ON(!ext4_has_inline_data(inode)); kaddr = kmap_atomic(page); @@ -757,7 +759,7 @@ int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, /* clear page dirty so that writepages wouldn't work for us. */ ClearPageDirty(page); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); brelse(iloc.bh); out: return copied; @@ -768,7 +770,7 @@ ext4_journalled_write_inline_data(struct inode *inode, unsigned len, struct page *page) { - int ret; + int ret, no_expand; void *kaddr; struct ext4_iloc iloc; @@ -778,11 +780,11 @@ ext4_journalled_write_inline_data(struct inode *inode, return NULL; } - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); kaddr = kmap_atomic(page); ext4_write_inline_data(inode, &iloc, kaddr, 0, len); kunmap_atomic(kaddr); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); return iloc.bh; } @@ -944,8 +946,15 @@ int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos, struct page *page) { int i_size_changed = 0; + int ret; - copied = ext4_write_inline_data_end(inode, pos, len, copied, page); + ret = ext4_write_inline_data_end(inode, pos, len, copied, page); + if (ret < 0) { + unlock_page(page); + put_page(page); + return ret; + } + copied = ret; /* * No need to use i_size_read() here, the i_size @@ -1043,7 +1052,6 @@ static int ext4_add_dirent_to_inline(handle_t *handle, dir->i_mtime = dir->i_ctime = current_time(dir); ext4_update_dx_flag(dir); dir->i_version++; - ext4_mark_inode_dirty(handle, dir); return 1; } @@ -1259,7 +1267,7 @@ out: int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname, struct inode *dir, struct inode *inode) { - int ret, inline_size; + int ret, inline_size, no_expand; void *inline_start; struct ext4_iloc iloc; @@ -1267,7 +1275,7 @@ int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname, if (ret) return ret; - down_write(&EXT4_I(dir)->xattr_sem); + ext4_write_lock_xattr(dir, &no_expand); if (!ext4_has_inline_data(dir)) goto out; @@ -1312,8 +1320,8 @@ int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname, ret = ext4_convert_inline_data_nolock(handle, dir, &iloc); out: + ext4_write_unlock_xattr(dir, &no_expand); ext4_mark_inode_dirty(handle, dir); - up_write(&EXT4_I(dir)->xattr_sem); brelse(iloc.bh); return ret; } @@ -1673,7 +1681,7 @@ int ext4_delete_inline_entry(handle_t *handle, struct buffer_head *bh, int *has_inline_data) { - int err, inline_size; + int err, inline_size, no_expand; struct ext4_iloc iloc; void *inline_start; @@ -1681,7 +1689,7 @@ int ext4_delete_inline_entry(handle_t *handle, if (err) return err; - down_write(&EXT4_I(dir)->xattr_sem); + ext4_write_lock_xattr(dir, &no_expand); if (!ext4_has_inline_data(dir)) { *has_inline_data = 0; goto out; @@ -1709,13 +1717,11 @@ int ext4_delete_inline_entry(handle_t *handle, if (err) goto out; - err = ext4_mark_inode_dirty(handle, dir); - if (unlikely(err)) - goto out; - ext4_show_inline_dir(dir, iloc.bh, inline_start, inline_size); out: - up_write(&EXT4_I(dir)->xattr_sem); + ext4_write_unlock_xattr(dir, &no_expand); + if (likely(err == 0)) + err = ext4_mark_inode_dirty(handle, dir); brelse(iloc.bh); if (err != -ENOENT) ext4_std_error(dir->i_sb, err); @@ -1814,11 +1820,11 @@ out: int ext4_destroy_inline_data(handle_t *handle, struct inode *inode) { - int ret; + int ret, no_expand; - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); ret = ext4_destroy_inline_data_nolock(handle, inode); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); return ret; } @@ -1900,10 +1906,10 @@ out: return error; } -void ext4_inline_data_truncate(struct inode *inode, int *has_inline) +int ext4_inline_data_truncate(struct inode *inode, int *has_inline) { handle_t *handle; - int inline_size, value_len, needed_blocks; + int inline_size, value_len, needed_blocks, no_expand, err = 0; size_t i_size; void *value = NULL; struct ext4_xattr_ibody_find is = { @@ -1918,19 +1924,19 @@ void ext4_inline_data_truncate(struct inode *inode, int *has_inline) needed_blocks = ext4_writepage_trans_blocks(inode); handle = ext4_journal_start(inode, EXT4_HT_INODE, needed_blocks); if (IS_ERR(handle)) - return; + return PTR_ERR(handle); - down_write(&EXT4_I(inode)->xattr_sem); + ext4_write_lock_xattr(inode, &no_expand); if (!ext4_has_inline_data(inode)) { *has_inline = 0; ext4_journal_stop(handle); - return; + return 0; } - if (ext4_orphan_add(handle, inode)) + if ((err = ext4_orphan_add(handle, inode)) != 0) goto out; - if (ext4_get_inode_loc(inode, &is.iloc)) + if ((err = ext4_get_inode_loc(inode, &is.iloc)) != 0) goto out; down_write(&EXT4_I(inode)->i_data_sem); @@ -1941,24 +1947,29 @@ void ext4_inline_data_truncate(struct inode *inode, int *has_inline) if (i_size < inline_size) { /* Clear the content in the xattr space. */ if (inline_size > EXT4_MIN_INLINE_DATA_SIZE) { - if (ext4_xattr_ibody_find(inode, &i, &is)) + if ((err = ext4_xattr_ibody_find(inode, &i, &is)) != 0) goto out_error; BUG_ON(is.s.not_found); value_len = le32_to_cpu(is.s.here->e_value_size); value = kmalloc(value_len, GFP_NOFS); - if (!value) + if (!value) { + err = -ENOMEM; goto out_error; + } - if (ext4_xattr_ibody_get(inode, i.name_index, i.name, - value, value_len)) + err = ext4_xattr_ibody_get(inode, i.name_index, + i.name, value, value_len); + if (err <= 0) goto out_error; i.value = value; i.value_len = i_size > EXT4_MIN_INLINE_DATA_SIZE ? i_size - EXT4_MIN_INLINE_DATA_SIZE : 0; - if (ext4_xattr_ibody_inline_set(handle, inode, &i, &is)) + err = ext4_xattr_ibody_inline_set(handle, inode, + &i, &is); + if (err) goto out_error; } @@ -1978,23 +1989,24 @@ out_error: up_write(&EXT4_I(inode)->i_data_sem); out: brelse(is.iloc.bh); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); kfree(value); if (inode->i_nlink) ext4_orphan_del(handle, inode); - inode->i_mtime = inode->i_ctime = current_time(inode); - ext4_mark_inode_dirty(handle, inode); - if (IS_SYNC(inode)) - ext4_handle_sync(handle); - + if (err == 0) { + inode->i_mtime = inode->i_ctime = current_time(inode); + err = ext4_mark_inode_dirty(handle, inode); + if (IS_SYNC(inode)) + ext4_handle_sync(handle); + } ext4_journal_stop(handle); - return; + return err; } int ext4_convert_inline_data(struct inode *inode) { - int error, needed_blocks; + int error, needed_blocks, no_expand; handle_t *handle; struct ext4_iloc iloc; @@ -2016,15 +2028,10 @@ int ext4_convert_inline_data(struct inode *inode) goto out_free; } - down_write(&EXT4_I(inode)->xattr_sem); - if (!ext4_has_inline_data(inode)) { - up_write(&EXT4_I(inode)->xattr_sem); - goto out; - } - - error = ext4_convert_inline_data_nolock(handle, inode, &iloc); - up_write(&EXT4_I(inode)->xattr_sem); -out: + ext4_write_lock_xattr(inode, &no_expand); + if (ext4_has_inline_data(inode)) + error = ext4_convert_inline_data_nolock(handle, inode, &iloc); + ext4_write_unlock_xattr(inode, &no_expand); ext4_journal_stop(handle); out_free: brelse(iloc.bh); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 88d57af1b516..f622d4a577e3 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1189,6 +1189,9 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping, pgoff_t index; unsigned from, to; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + trace_ext4_write_begin(inode, pos, len, flags); /* * Reserve one block more for addition to orphan list in case @@ -1330,8 +1333,11 @@ static int ext4_write_end(struct file *file, if (ext4_has_inline_data(inode)) { ret = ext4_write_inline_data_end(inode, pos, len, copied, page); - if (ret < 0) + if (ret < 0) { + unlock_page(page); + put_page(page); goto errout; + } copied = ret; } else copied = block_write_end(file, mapping, pos, @@ -1385,7 +1391,9 @@ errout: * set the buffer to be dirty, since in data=journalled mode we need * to call ext4_handle_dirty_metadata() instead. */ -static void zero_new_buffers(struct page *page, unsigned from, unsigned to) +static void ext4_journalled_zero_new_buffers(handle_t *handle, + struct page *page, + unsigned from, unsigned to) { unsigned int block_start = 0, block_end; struct buffer_head *head, *bh; @@ -1402,7 +1410,7 @@ static void zero_new_buffers(struct page *page, unsigned from, unsigned to) size = min(to, block_end) - start; zero_user(page, start, size); - set_buffer_uptodate(bh); + write_end_fn(handle, bh); } clear_buffer_new(bh); } @@ -1431,18 +1439,25 @@ static int ext4_journalled_write_end(struct file *file, BUG_ON(!ext4_handle_valid(handle)); - if (ext4_has_inline_data(inode)) - copied = ext4_write_inline_data_end(inode, pos, len, - copied, page); - else { - if (copied < len) { - if (!PageUptodate(page)) - copied = 0; - zero_new_buffers(page, from+copied, to); + if (ext4_has_inline_data(inode)) { + ret = ext4_write_inline_data_end(inode, pos, len, + copied, page); + if (ret < 0) { + unlock_page(page); + put_page(page); + goto errout; } - + copied = ret; + } else if (unlikely(copied < len) && !PageUptodate(page)) { + copied = 0; + ext4_journalled_zero_new_buffers(handle, page, from, to); + } else { + if (unlikely(copied < len)) + ext4_journalled_zero_new_buffers(handle, page, + from + copied, to); ret = ext4_walk_page_buffers(handle, page_buffers(page), from, - to, &partial, write_end_fn); + from + copied, &partial, + write_end_fn); if (!partial) SetPageUptodate(page); } @@ -1468,6 +1483,7 @@ static int ext4_journalled_write_end(struct file *file, */ ext4_orphan_add(handle, inode); +errout: ret2 = ext4_journal_stop(handle); if (!ret) ret = ret2; @@ -2034,6 +2050,12 @@ static int ext4_writepage(struct page *page, struct ext4_io_submit io_submit; bool keep_towrite = false; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) { + ext4_invalidatepage(page, 0, PAGE_SIZE); + unlock_page(page); + return -EIO; + } + trace_ext4_writepage(page); size = i_size_read(inode); if (page->index == size >> PAGE_SHIFT) @@ -2409,7 +2431,8 @@ static int mpage_map_and_submit_extent(handle_t *handle, if (err < 0) { struct super_block *sb = inode->i_sb; - if (EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED) + if (ext4_forced_shutdown(EXT4_SB(sb)) || + EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED) goto invalidate_dirty_pages; /* * Let the uper layers retry transient errors. @@ -2464,8 +2487,8 @@ update_disksize: disksize = i_size; if (disksize > EXT4_I(inode)->i_disksize) EXT4_I(inode)->i_disksize = disksize; - err2 = ext4_mark_inode_dirty(handle, inode); up_write(&EXT4_I(inode)->i_data_sem); + err2 = ext4_mark_inode_dirty(handle, inode); if (err2) ext4_error(inode->i_sb, "Failed to mark inode %lu dirty", @@ -2631,6 +2654,9 @@ static int ext4_writepages(struct address_space *mapping, struct blk_plug plug; bool give_up_on_write = false; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + percpu_down_read(&sbi->s_journal_flag_rwsem); trace_ext4_writepages(inode, wbc); @@ -2667,7 +2693,8 @@ static int ext4_writepages(struct address_space *mapping, * *never* be called, so if that ever happens, we would want * the stack trace. */ - if (unlikely(sbi->s_mount_flags & EXT4_MF_FS_ABORTED)) { + if (unlikely(ext4_forced_shutdown(EXT4_SB(mapping->host->i_sb)) || + sbi->s_mount_flags & EXT4_MF_FS_ABORTED)) { ret = -EROFS; goto out_writepages; } @@ -2892,6 +2919,9 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping, struct inode *inode = mapping->host; handle_t *handle; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + index = pos >> PAGE_SHIFT; if (ext4_nonda_switch(inode->i_sb) || @@ -3914,6 +3944,10 @@ static int ext4_block_truncate_page(handle_t *handle, unsigned blocksize; struct inode *inode = mapping->host; + /* If we are processing an encrypted inode during orphan list handling */ + if (ext4_encrypted_inode(inode) && !fscrypt_has_encryption_key(inode)) + return 0; + blocksize = inode->i_sb->s_blocksize; length = blocksize - (offset & (blocksize - 1)); @@ -4222,7 +4256,9 @@ int ext4_truncate(struct inode *inode) if (ext4_has_inline_data(inode)) { int has_inline = 1; - ext4_inline_data_truncate(inode, &has_inline); + err = ext4_inline_data_truncate(inode, &has_inline); + if (err) + return err; if (has_inline) return 0; } @@ -5197,6 +5233,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) int orphan = 0; const unsigned int ia_valid = attr->ia_valid; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + error = setattr_prepare(dentry, attr); if (error) return error; @@ -5483,6 +5522,9 @@ int ext4_mark_iloc_dirty(handle_t *handle, { int err = 0; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + if (IS_I_VERSION(inode)) inode_inc_iversion(inode); @@ -5506,6 +5548,9 @@ ext4_reserve_inode_write(handle_t *handle, struct inode *inode, { int err; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + err = ext4_get_inode_loc(inode, iloc); if (!err) { BUFFER_TRACE(iloc->bh, "get_write_access"); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index d534399cf607..a4273ddb9922 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -16,6 +16,7 @@ #include <linux/quotaops.h> #include <linux/uuid.h> #include <linux/uaccess.h> +#include <linux/delay.h> #include "ext4_jbd2.h" #include "ext4.h" @@ -442,6 +443,52 @@ static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) return iflags; } +int ext4_shutdown(struct super_block *sb, unsigned long arg) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + __u32 flags; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (get_user(flags, (__u32 __user *)arg)) + return -EFAULT; + + if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) + return -EINVAL; + + if (ext4_forced_shutdown(sbi)) + return 0; + + ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); + + switch (flags) { + case EXT4_GOING_FLAGS_DEFAULT: + freeze_bdev(sb->s_bdev); + set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); + thaw_bdev(sb->s_bdev, sb); + break; + case EXT4_GOING_FLAGS_LOGFLUSH: + set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); + if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { + (void) ext4_force_commit(sb); + jbd2_journal_abort(sbi->s_journal, 0); + } + break; + case EXT4_GOING_FLAGS_NOLOGFLUSH: + set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); + if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { + msleep(100); + jbd2_journal_abort(sbi->s_journal, 0); + } + break; + default: + return -EINVAL; + } + clear_opt(sb, DISCARD); + return 0; +} + long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = file_inode(filp); @@ -893,6 +940,8 @@ resizefs_out: return 0; } + case EXT4_IOC_SHUTDOWN: + return ext4_shutdown(sb, arg); default: return -ENOTTY; } @@ -959,6 +1008,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case EXT4_IOC_SET_ENCRYPTION_POLICY: case EXT4_IOC_GET_ENCRYPTION_PWSALT: case EXT4_IOC_GET_ENCRYPTION_POLICY: + case EXT4_IOC_SHUTDOWN: break; default: return -ENOIOCTLCMD; diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 7ae43c59bc79..10c62de642c6 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1556,7 +1556,17 @@ static int mb_find_extent(struct ext4_buddy *e4b, int block, ex->fe_len += 1 << order; } - BUG_ON(ex->fe_start + ex->fe_len > (1 << (e4b->bd_blkbits + 3))); + if (ex->fe_start + ex->fe_len > (1 << (e4b->bd_blkbits + 3))) { + /* Should never happen! (but apparently sometimes does?!?) */ + WARN_ON(1); + ext4_error(e4b->bd_sb, "corruption or bug in mb_find_extent " + "block=%d, order=%d needed=%d ex=%u/%d/%d@%u", + block, order, needed, ex->fe_group, ex->fe_start, + ex->fe_len, ex->fe_logical); + ex->fe_len = 0; + ex->fe_start = 0; + ex->fe_group = 0; + } return ex->fe_len; } @@ -2136,8 +2146,10 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac) * We search using buddy data only if the order of the request * is greater than equal to the sbi_s_mb_order2_reqs * You can tune it via /sys/fs/ext4/<partition>/mb_order2_req + * We also support searching for power-of-two requests only for + * requests upto maximum buddy size we have constructed. */ - if (i >= sbi->s_mb_order2_reqs) { + if (i >= sbi->s_mb_order2_reqs && i <= sb->s_blocksize_bits + 2) { /* * This should tell if fe_len is exactly power of 2 */ @@ -2207,7 +2219,7 @@ repeat: } ac->ac_groups_scanned++; - if (cr == 0 && ac->ac_2order < sb->s_blocksize_bits+2) + if (cr == 0) ext4_mb_simple_scan_group(ac, &e4b); else if (cr == 1 && sbi->s_stripe && !(ac->ac_g_ex.fe_len % sbi->s_stripe)) @@ -3123,6 +3135,13 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, if (ar->pright && start + size - 1 >= ar->lright) size -= start + size - ar->lright; + /* + * Trim allocation request for filesystems with artificially small + * groups. + */ + if (size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb)) + size = EXT4_BLOCKS_PER_GROUP(ac->ac_sb); + end = start + size; /* check we don't cross already preallocated blocks */ diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index eadba919f26b..6ad612c576fc 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1378,6 +1378,8 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, return NULL; retval = ext4_fname_setup_filename(dir, d_name, 1, &fname); + if (retval == -ENOENT) + return NULL; if (retval) return ERR_PTR(retval); @@ -1616,13 +1618,15 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi !fscrypt_has_permitted_context(dir, inode)) { int nokey = ext4_encrypted_inode(inode) && !fscrypt_has_encryption_key(inode); - iput(inode); - if (nokey) + if (nokey) { + iput(inode); return ERR_PTR(-ENOKEY); + } ext4_warning(inode->i_sb, "Inconsistent encryption contexts: %lu/%lu", (unsigned long) dir->i_ino, (unsigned long) inode->i_ino); + iput(inode); return ERR_PTR(-EPERM); } } @@ -2935,6 +2939,9 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) struct ext4_dir_entry_2 *de; handle_t *handle = NULL; + if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + return -EIO; + /* Initialize quotas before so that eventual writes go in * separate transaction */ retval = dquot_initialize(dir); @@ -3008,6 +3015,9 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) struct ext4_dir_entry_2 *de; handle_t *handle = NULL; + if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + return -EIO; + trace_ext4_unlink_enter(dir, dentry); /* Initialize quotas before so that eventual writes go * in separate transaction */ @@ -3078,6 +3088,9 @@ static int ext4_symlink(struct inode *dir, struct fscrypt_str disk_link; struct fscrypt_symlink_data *sd = NULL; + if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + return -EIO; + disk_link.len = len + 1; disk_link.name = (char *) symname; @@ -3088,7 +3101,7 @@ static int ext4_symlink(struct inode *dir, if (err) return err; if (!fscrypt_has_encryption_key(dir)) - return -EPERM; + return -ENOKEY; disk_link.len = (fscrypt_fname_encrypted_size(dir, len) + sizeof(struct fscrypt_symlink_data)); sd = kzalloc(disk_link.len, GFP_KERNEL); @@ -3525,6 +3538,12 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, EXT4_I(old_dentry->d_inode)->i_projid))) return -EXDEV; + if ((ext4_encrypted_inode(old_dir) && + !fscrypt_has_encryption_key(old_dir)) || + (ext4_encrypted_inode(new_dir) && + !fscrypt_has_encryption_key(new_dir))) + return -ENOKEY; + retval = dquot_initialize(old.dir); if (retval) return retval; @@ -3725,6 +3744,12 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, int retval; struct timespec ctime; + if ((ext4_encrypted_inode(old_dir) && + !fscrypt_has_encryption_key(old_dir)) || + (ext4_encrypted_inode(new_dir) && + !fscrypt_has_encryption_key(new_dir))) + return -ENOKEY; + if ((ext4_encrypted_inode(old_dir) || ext4_encrypted_inode(new_dir)) && (old_dir != new_dir) && @@ -3858,6 +3883,9 @@ static int ext4_rename2(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { + if (unlikely(ext4_forced_shutdown(EXT4_SB(old_dir->i_sb)))) + return -EIO; + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) return -EINVAL; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index d83b0f3c5fe9..208241b06662 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -24,7 +24,6 @@ #include <linux/slab.h> #include <linux/mm.h> #include <linux/backing-dev.h> -#include <linux/fscrypto.h> #include "ext4_jbd2.h" #include "xattr.h" @@ -158,7 +157,7 @@ static int ext4_end_io(ext4_io_end_t *io) io->handle = NULL; /* Following call will use up the handle */ ret = ext4_convert_unwritten_extents(handle, inode, offset, size); - if (ret < 0) { + if (ret < 0 && !ext4_forced_shutdown(EXT4_SB(inode->i_sb))) { ext4_msg(inode->i_sb, KERN_EMERG, "failed to convert unwritten extents to written " "extents -- potential data loss! " diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index cf681004b196..c3ed9021b781 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -45,7 +45,8 @@ int ext4_resize_begin(struct super_block *sb) return -EPERM; } - if (test_and_set_bit_lock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags)) + if (test_and_set_bit_lock(EXT4_FLAGS_RESIZING, + &EXT4_SB(sb)->s_ext4_flags)) ret = -EBUSY; return ret; @@ -53,7 +54,7 @@ int ext4_resize_begin(struct super_block *sb) void ext4_resize_end(struct super_block *sb) { - clear_bit_unlock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags); + clear_bit_unlock(EXT4_FLAGS_RESIZING, &EXT4_SB(sb)->s_ext4_flags); smp_mb__after_atomic(); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 66845a08a87a..2e03a0a88d92 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -438,6 +438,9 @@ void __ext4_error(struct super_block *sb, const char *function, struct va_format vaf; va_list args; + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return; + if (ext4_error_ratelimit(sb)) { va_start(args, fmt); vaf.fmt = fmt; @@ -459,6 +462,9 @@ void __ext4_error_inode(struct inode *inode, const char *function, struct va_format vaf; struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return; + es->s_last_error_ino = cpu_to_le32(inode->i_ino); es->s_last_error_block = cpu_to_le64(block); if (ext4_error_ratelimit(inode->i_sb)) { @@ -491,6 +497,9 @@ void __ext4_error_file(struct file *file, const char *function, struct inode *inode = file_inode(file); char pathname[80], *path; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return; + es = EXT4_SB(inode->i_sb)->s_es; es->s_last_error_ino = cpu_to_le32(inode->i_ino); if (ext4_error_ratelimit(inode->i_sb)) { @@ -567,6 +576,9 @@ void __ext4_std_error(struct super_block *sb, const char *function, char nbuf[16]; const char *errstr; + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return; + /* Special case: if the error is EROFS, and we're not already * inside a transaction, then there's really no point in logging * an error. */ @@ -600,6 +612,9 @@ void __ext4_abort(struct super_block *sb, const char *function, struct va_format vaf; va_list args; + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return; + save_error_info(sb, function, line); va_start(args, fmt); vaf.fmt = fmt; @@ -695,6 +710,9 @@ __acquires(bitlock) va_list args; struct ext4_super_block *es = EXT4_SB(sb)->s_es; + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return; + es->s_last_error_ino = cpu_to_le32(ino); es->s_last_error_block = cpu_to_le64(block); __save_error_info(sb, function, line); @@ -825,6 +843,7 @@ static void ext4_put_super(struct super_block *sb) { struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_super_block *es = sbi->s_es; + int aborted = 0; int i, err; ext4_unregister_li_request(sb); @@ -834,9 +853,10 @@ static void ext4_put_super(struct super_block *sb) destroy_workqueue(sbi->rsv_conversion_wq); if (sbi->s_journal) { + aborted = is_journal_aborted(sbi->s_journal); err = jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; - if (err < 0) + if ((err < 0) && !aborted) ext4_abort(sb, "Couldn't clean up the journal"); } @@ -847,7 +867,7 @@ static void ext4_put_super(struct super_block *sb) ext4_mb_release(sb); ext4_ext_release(sb); - if (!(sb->s_flags & MS_RDONLY)) { + if (!(sb->s_flags & MS_RDONLY) && !aborted) { ext4_clear_feature_journal_needs_recovery(sb); es->s_state = cpu_to_le16(sbi->s_mount_state); } @@ -1100,12 +1120,6 @@ static int ext4_get_context(struct inode *inode, void *ctx, size_t len) EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len); } -static int ext4_key_prefix(struct inode *inode, u8 **key) -{ - *key = EXT4_SB(inode->i_sb)->key_prefix; - return EXT4_SB(inode->i_sb)->key_prefix_size; -} - static int ext4_prepare_context(struct inode *inode) { return ext4_convert_inline_data(inode); @@ -1179,9 +1193,9 @@ static unsigned ext4_max_namelen(struct inode *inode) EXT4_NAME_LEN; } -static struct fscrypt_operations ext4_cryptops = { +static const struct fscrypt_operations ext4_cryptops = { + .key_prefix = "ext4:", .get_context = ext4_get_context, - .key_prefix = ext4_key_prefix, .prepare_context = ext4_prepare_context, .set_context = ext4_set_context, .dummy_context = ext4_dummy_context, @@ -1190,7 +1204,7 @@ static struct fscrypt_operations ext4_cryptops = { .max_namelen = ext4_max_namelen, }; #else -static struct fscrypt_operations ext4_cryptops = { +static const struct fscrypt_operations ext4_cryptops = { .is_encrypted = ext4_encrypted_inode, }; #endif @@ -1290,7 +1304,7 @@ enum { Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, Opt_dax, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit, - Opt_lazytime, Opt_nolazytime, + Opt_lazytime, Opt_nolazytime, Opt_debug_want_extra_isize, Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity, Opt_inode_readahead_blks, Opt_journal_ioprio, Opt_dioread_nolock, Opt_dioread_lock, @@ -1358,6 +1372,7 @@ static const match_table_t tokens = { {Opt_delalloc, "delalloc"}, {Opt_lazytime, "lazytime"}, {Opt_nolazytime, "nolazytime"}, + {Opt_debug_want_extra_isize, "debug_want_extra_isize=%u"}, {Opt_nodelalloc, "nodelalloc"}, {Opt_removed, "mblk_io_submit"}, {Opt_removed, "nomblk_io_submit"}, @@ -1563,6 +1578,7 @@ static const struct mount_opts { #endif {Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET}, {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET}, + {Opt_debug_want_extra_isize, 0, MOPT_GTE0}, {Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q}, {Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q}, @@ -1676,6 +1692,8 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, if (arg == 0) arg = JBD2_DEFAULT_MAX_COMMIT_AGE; sbi->s_commit_interval = HZ * arg; + } else if (token == Opt_debug_want_extra_isize) { + sbi->s_want_extra_isize = arg; } else if (token == Opt_max_batch_time) { sbi->s_max_batch_time = arg; } else if (token == Opt_min_batch_time) { @@ -2619,9 +2637,9 @@ static unsigned long ext4_get_stripe_size(struct ext4_sb_info *sbi) if (sbi->s_stripe && sbi->s_stripe <= sbi->s_blocks_per_group) ret = sbi->s_stripe; - else if (stripe_width <= sbi->s_blocks_per_group) + else if (stripe_width && stripe_width <= sbi->s_blocks_per_group) ret = stripe_width; - else if (stride <= sbi->s_blocks_per_group) + else if (stride && stride <= sbi->s_blocks_per_group) ret = stride; else ret = 0; @@ -3842,7 +3860,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) / EXT4_DESC_PER_BLOCK(sb); if (ext4_has_feature_meta_bg(sb)) { - if (le32_to_cpu(es->s_first_meta_bg) >= db_count) { + if (le32_to_cpu(es->s_first_meta_bg) > db_count) { ext4_msg(sb, KERN_WARNING, "first meta block group too large: %u " "(group descriptor block count %u)", @@ -3925,7 +3943,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) * root first: it may be modified in the journal! */ if (!test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) { - if (ext4_load_journal(sb, es, journal_devnum)) + err = ext4_load_journal(sb, es, journal_devnum); + if (err) goto failed_mount3a; } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) && ext4_has_feature_journal_needs_recovery(sb)) { @@ -4087,7 +4106,8 @@ no_journal: sb->s_flags |= MS_RDONLY; /* determine the minimum size of new large inodes, if present */ - if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) { + if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE && + sbi->s_want_extra_isize == 0) { sbi->s_want_extra_isize = sizeof(struct ext4_inode) - EXT4_GOOD_OLD_INODE_SIZE; if (ext4_has_feature_extra_isize(sb)) { @@ -4218,11 +4238,6 @@ no_journal: ratelimit_state_init(&sbi->s_msg_ratelimit_state, 5 * HZ, 10); kfree(orig_data); -#ifdef CONFIG_EXT4_FS_ENCRYPTION - memcpy(sbi->key_prefix, EXT4_KEY_DESC_PREFIX, - EXT4_KEY_DESC_PREFIX_SIZE); - sbi->key_prefix_size = EXT4_KEY_DESC_PREFIX_SIZE; -#endif return 0; cantfind_ext4: @@ -4720,6 +4735,9 @@ static int ext4_sync_fs(struct super_block *sb, int wait) bool needs_barrier = false; struct ext4_sb_info *sbi = EXT4_SB(sb); + if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + return 0; + trace_ext4_sync_fs(sb, wait); flush_workqueue(sbi->rsv_conversion_wq); /* @@ -4803,7 +4821,7 @@ out: */ static int ext4_unfreeze(struct super_block *sb) { - if (sb->s_flags & MS_RDONLY) + if ((sb->s_flags & MS_RDONLY) || ext4_forced_shutdown(EXT4_SB(sb))) return 0; if (EXT4_SB(sb)->s_journal) { diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 5a94fa52b74f..67636acf7624 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -411,6 +411,9 @@ ext4_xattr_get(struct inode *inode, int name_index, const char *name, { int error; + if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + return -EIO; + if (strlen(name) > 255) return -ERANGE; @@ -1188,16 +1191,14 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, struct ext4_xattr_block_find bs = { .s = { .not_found = -ENODATA, }, }; - unsigned long no_expand; + int no_expand; int error; if (!name) return -EINVAL; if (strlen(name) > 255) return -ERANGE; - down_write(&EXT4_I(inode)->xattr_sem); - no_expand = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND); - ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND); + ext4_write_lock_xattr(inode, &no_expand); error = ext4_reserve_inode_write(handle, inode, &is.iloc); if (error) @@ -1264,7 +1265,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, ext4_xattr_update_super_block(handle, inode->i_sb); inode->i_ctime = current_time(inode); if (!value) - ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); + no_expand = 0; error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); /* * The bh is consumed by ext4_mark_iloc_dirty, even with @@ -1278,9 +1279,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, cleanup: brelse(is.iloc.bh); brelse(bs.bh); - if (no_expand == 0) - ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); return error; } @@ -1497,12 +1496,11 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, int error = 0, tried_min_extra_isize = 0; int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize); int isize_diff; /* How much do we need to grow i_extra_isize */ + int no_expand; + + if (ext4_write_trylock_xattr(inode, &no_expand) == 0) + return 0; - down_write(&EXT4_I(inode)->xattr_sem); - /* - * Set EXT4_STATE_NO_EXPAND to avoid recursion when marking inode dirty - */ - ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND); retry: isize_diff = new_extra_isize - EXT4_I(inode)->i_extra_isize; if (EXT4_I(inode)->i_extra_isize >= new_extra_isize) @@ -1584,17 +1582,16 @@ shift: EXT4_I(inode)->i_extra_isize = new_extra_isize; brelse(bh); out: - ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); - up_write(&EXT4_I(inode)->xattr_sem); + ext4_write_unlock_xattr(inode, &no_expand); return 0; cleanup: brelse(bh); /* - * We deliberately leave EXT4_STATE_NO_EXPAND set here since inode - * size expansion failed. + * Inode size expansion failed; don't try again */ - up_write(&EXT4_I(inode)->xattr_sem); + no_expand = 1; + ext4_write_unlock_xattr(inode, &no_expand); return error; } diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index a92e783fa057..099c8b670ef5 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -102,6 +102,38 @@ extern const struct xattr_handler ext4_xattr_security_handler; #define EXT4_XATTR_NAME_ENCRYPTION_CONTEXT "c" +/* + * The EXT4_STATE_NO_EXPAND is overloaded and used for two purposes. + * The first is to signal that there the inline xattrs and data are + * taking up so much space that we might as well not keep trying to + * expand it. The second is that xattr_sem is taken for writing, so + * we shouldn't try to recurse into the inode expansion. For this + * second case, we need to make sure that we take save and restore the + * NO_EXPAND state flag appropriately. + */ +static inline void ext4_write_lock_xattr(struct inode *inode, int *save) +{ + down_write(&EXT4_I(inode)->xattr_sem); + *save = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND); + ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND); +} + +static inline int ext4_write_trylock_xattr(struct inode *inode, int *save) +{ + if (down_write_trylock(&EXT4_I(inode)->xattr_sem) == 0) + return 0; + *save = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND); + ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND); + return 1; +} + +static inline void ext4_write_unlock_xattr(struct inode *inode, int *save) +{ + if (*save == 0) + ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); + up_write(&EXT4_I(inode)->xattr_sem); +} + extern ssize_t ext4_listxattr(struct dentry *, char *, size_t); extern int ext4_xattr_get(struct inode *, int, const char *, void *, size_t); diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 827c5daef4fc..18607fc5240d 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -268,7 +268,10 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, err = fscrypt_setup_filename(dir, child, 1, &fname); if (err) { - *res_page = ERR_PTR(err); + if (err == -ENOENT) + *res_page = NULL; + else + *res_page = ERR_PTR(err); return NULL; } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 2da8c3aa0ce5..069fc7277d8d 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -22,7 +22,11 @@ #include <linux/vmalloc.h> #include <linux/bio.h> #include <linux/blkdev.h> -#include <linux/fscrypto.h> +#ifdef CONFIG_F2FS_FS_ENCRYPTION +#include <linux/fscrypt_supp.h> +#else +#include <linux/fscrypt_notsupp.h> +#endif #include <crypto/hash.h> #ifdef CONFIG_F2FS_CHECK_FS @@ -760,10 +764,6 @@ enum { MAX_TIME, }; -#ifdef CONFIG_F2FS_FS_ENCRYPTION -#define F2FS_KEY_DESC_PREFIX "f2fs:" -#define F2FS_KEY_DESC_PREFIX_SIZE 5 -#endif struct f2fs_sb_info { struct super_block *sb; /* pointer to VFS super block */ struct proc_dir_entry *s_proc; /* proc entry */ @@ -771,11 +771,6 @@ struct f2fs_sb_info { int valid_super_block; /* valid super block no */ unsigned long s_flag; /* flags for sbi */ -#ifdef CONFIG_F2FS_FS_ENCRYPTION - u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE]; - u8 key_prefix_size; -#endif - #ifdef CONFIG_BLK_DEV_ZONED unsigned int blocks_per_blkz; /* F2FS blocks per zone */ unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */ @@ -2510,28 +2505,4 @@ static inline bool f2fs_may_encrypt(struct inode *inode) #endif } -#ifndef CONFIG_F2FS_FS_ENCRYPTION -#define fscrypt_set_d_op(i) -#define fscrypt_get_ctx fscrypt_notsupp_get_ctx -#define fscrypt_release_ctx fscrypt_notsupp_release_ctx -#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page -#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page -#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages -#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page -#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page -#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range -#define fscrypt_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy -#define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_get_policy -#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context -#define fscrypt_inherit_context fscrypt_notsupp_inherit_context -#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info -#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info -#define fscrypt_setup_filename fscrypt_notsupp_setup_filename -#define fscrypt_free_filename fscrypt_notsupp_free_filename -#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size -#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer -#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer -#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr -#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk -#endif #endif diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 56c19b0610a8..11cabcadb1a3 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -403,7 +403,7 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry, return err; if (!fscrypt_has_encryption_key(dir)) - return -EPERM; + return -ENOKEY; disk_link.len = (fscrypt_fname_encrypted_size(dir, len) + sizeof(struct fscrypt_symlink_data)); @@ -447,7 +447,7 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry, goto err_out; if (!fscrypt_has_encryption_key(inode)) { - err = -EPERM; + err = -ENOKEY; goto err_out; } diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 46fd30d8af77..a831303bb777 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1156,12 +1156,6 @@ static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) ctx, len, NULL); } -static int f2fs_key_prefix(struct inode *inode, u8 **key) -{ - *key = F2FS_I_SB(inode)->key_prefix; - return F2FS_I_SB(inode)->key_prefix_size; -} - static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, void *fs_data) { @@ -1176,16 +1170,16 @@ static unsigned f2fs_max_namelen(struct inode *inode) inode->i_sb->s_blocksize : F2FS_NAME_LEN; } -static struct fscrypt_operations f2fs_cryptops = { +static const struct fscrypt_operations f2fs_cryptops = { + .key_prefix = "f2fs:", .get_context = f2fs_get_context, - .key_prefix = f2fs_key_prefix, .set_context = f2fs_set_context, .is_encrypted = f2fs_encrypted_inode, .empty_dir = f2fs_empty_dir, .max_namelen = f2fs_max_namelen, }; #else -static struct fscrypt_operations f2fs_cryptops = { +static const struct fscrypt_operations f2fs_cryptops = { .is_encrypted = f2fs_encrypted_inode, }; #endif @@ -1518,12 +1512,6 @@ static void init_sb_info(struct f2fs_sb_info *sbi) mutex_init(&sbi->wio_mutex[NODE]); mutex_init(&sbi->wio_mutex[DATA]); spin_lock_init(&sbi->cp_lock); - -#ifdef CONFIG_F2FS_FS_ENCRYPTION - memcpy(sbi->key_prefix, F2FS_KEY_DESC_PREFIX, - F2FS_KEY_DESC_PREFIX_SIZE); - sbi->key_prefix_size = F2FS_KEY_DESC_PREFIX_SIZE; -#endif } static int init_percpu_info(struct f2fs_sb_info *sbi) diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 91307940c8ac..052f8d3c41cb 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -256,7 +256,7 @@ struct fuse_io_priv { #define FUSE_IO_PRIV_SYNC(f) \ { \ - .refcnt = { ATOMIC_INIT(1) }, \ + .refcnt = KREF_INIT(1), \ .async = 0, \ .file = f, \ } diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 6b039d7ce160..ed7a2e252ad8 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -143,8 +143,8 @@ static int gfs2_writepage(struct page *page, struct writeback_control *wbc) /* This is the same as calling block_write_full_page, but it also * writes pages outside of i_size */ -int gfs2_write_full_page(struct page *page, get_block_t *get_block, - struct writeback_control *wbc) +static int gfs2_write_full_page(struct page *page, get_block_t *get_block, + struct writeback_control *wbc) { struct inode * const inode = page->mapping->host; loff_t i_size = i_size_read(inode); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index fc5da4cbe88c..01b97c012c6e 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -720,6 +720,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct gfs2_rgrp_list rlist; + struct gfs2_trans *tr; u64 bn, bstart; u32 blen, btotal; __be64 *p; @@ -728,6 +729,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, unsigned int revokes = 0; int x; int error; + int jblocks_rqsted; error = gfs2_rindex_update(sdp); if (error) @@ -791,12 +793,17 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, if (gfs2_rs_active(&ip->i_res)) /* needs to be done with the rgrp glock held */ gfs2_rs_deltree(&ip->i_res); - error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE + - RES_INDIRECT + RES_STATFS + RES_QUOTA, - revokes); +restart: + jblocks_rqsted = rg_blocks + RES_DINODE + + RES_INDIRECT + RES_STATFS + RES_QUOTA + + gfs2_struct2blk(sdp, revokes, sizeof(u64)); + if (jblocks_rqsted > atomic_read(&sdp->sd_log_thresh2)) + jblocks_rqsted = atomic_read(&sdp->sd_log_thresh2); + error = gfs2_trans_begin(sdp, jblocks_rqsted, revokes); if (error) goto out_rg_gunlock; + tr = current->journal_info; down_write(&ip->i_rw_mutex); gfs2_trans_add_meta(ip->i_gl, dibh); @@ -810,6 +817,16 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, if (!*p) continue; + /* check for max reasonable journal transaction blocks */ + if (tr->tr_num_buf_new + RES_STATFS + + RES_QUOTA >= atomic_read(&sdp->sd_log_thresh2)) { + if (rg_blocks >= tr->tr_num_buf_new) + rg_blocks -= tr->tr_num_buf_new; + else + rg_blocks = 0; + break; + } + bn = be64_to_cpu(*p); if (bstart + blen == bn) @@ -827,6 +844,9 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, *p = 0; gfs2_add_inode_blocks(&ip->i_inode, -1); } + if (p == bottom) + rg_blocks = 0; + if (bstart) { __gfs2_free_blocks(ip, bstart, blen, metadata); btotal += blen; @@ -844,6 +864,9 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, gfs2_trans_end(sdp); + if (rg_blocks) + goto restart; + out_rg_gunlock: gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs); out_rlist: diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 94f50cac91c6..a2d45db32cd5 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1802,16 +1802,18 @@ void gfs2_glock_exit(void) static void gfs2_glock_iter_next(struct gfs2_glock_iter *gi) { - do { - gi->gl = rhashtable_walk_next(&gi->hti); + while ((gi->gl = rhashtable_walk_next(&gi->hti))) { if (IS_ERR(gi->gl)) { if (PTR_ERR(gi->gl) == -EAGAIN) continue; gi->gl = NULL; + return; } - /* Skip entries for other sb and dead entries */ - } while ((gi->gl) && ((gi->sdp != gi->gl->gl_name.ln_sbd) || - __lockref_is_dead(&gi->gl->gl_lockref))); + /* Skip entries for other sb and dead entries */ + if (gi->sdp == gi->gl->gl_name.ln_sbd && + !__lockref_is_dead(&gi->gl->gl_lockref)) + return; + } } static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos) diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index a6a3389a07fc..c45084ac642d 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -470,15 +470,19 @@ struct gfs2_quota_data { struct rcu_head qd_rcu; }; +enum { + TR_TOUCHED = 1, + TR_ATTACHED = 2, + TR_ALLOCED = 3, +}; + struct gfs2_trans { unsigned long tr_ip; unsigned int tr_blocks; unsigned int tr_revokes; unsigned int tr_reserved; - unsigned int tr_touched:1; - unsigned int tr_attached:1; - unsigned int tr_alloced:1; + unsigned long tr_flags; unsigned int tr_num_buf_new; unsigned int tr_num_databuf_new; @@ -794,6 +798,7 @@ struct gfs2_sbd { atomic_t sd_log_thresh1; atomic_t sd_log_thresh2; atomic_t sd_log_blks_free; + atomic_t sd_log_blks_needed; wait_queue_head_t sd_log_waitq; wait_queue_head_t sd_logd_waitq; diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 27c00a16def0..f865b96374df 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -349,6 +349,7 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks) if (gfs2_assert_warn(sdp, blks) || gfs2_assert_warn(sdp, blks <= sdp->sd_jdesc->jd_blocks)) return -EINVAL; + atomic_add(blks, &sdp->sd_log_blks_needed); retry: free_blocks = atomic_read(&sdp->sd_log_blks_free); if (unlikely(free_blocks <= wanted)) { @@ -370,6 +371,7 @@ retry: wake_up(&sdp->sd_reserving_log_wait); goto retry; } + atomic_sub(blks, &sdp->sd_log_blks_needed); trace_gfs2_log_blocks(sdp, -blks); /* @@ -797,7 +799,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, static void gfs2_merge_trans(struct gfs2_trans *old, struct gfs2_trans *new) { - WARN_ON_ONCE(old->tr_attached != 1); + WARN_ON_ONCE(!test_bit(TR_ATTACHED, &old->tr_flags)); old->tr_num_buf_new += new->tr_num_buf_new; old->tr_num_databuf_new += new->tr_num_databuf_new; @@ -821,9 +823,9 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr) if (sdp->sd_log_tr) { gfs2_merge_trans(sdp->sd_log_tr, tr); } else if (tr->tr_num_buf_new || tr->tr_num_databuf_new) { - gfs2_assert_withdraw(sdp, tr->tr_alloced); + gfs2_assert_withdraw(sdp, test_bit(TR_ALLOCED, &tr->tr_flags)); sdp->sd_log_tr = tr; - tr->tr_attached = 1; + set_bit(TR_ATTACHED, &tr->tr_flags); } sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm; @@ -891,13 +893,16 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp) { - return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1)); + return (atomic_read(&sdp->sd_log_pinned) + + atomic_read(&sdp->sd_log_blks_needed) >= + atomic_read(&sdp->sd_log_thresh1)); } static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp) { unsigned int used_blocks = sdp->sd_jdesc->jd_blocks - atomic_read(&sdp->sd_log_blks_free); - return used_blocks >= atomic_read(&sdp->sd_log_thresh2); + return used_blocks + atomic_read(&sdp->sd_log_blks_needed) >= + atomic_read(&sdp->sd_log_thresh2); } /** @@ -913,12 +918,15 @@ int gfs2_logd(void *data) struct gfs2_sbd *sdp = data; unsigned long t = 1; DEFINE_WAIT(wait); + bool did_flush; while (!kthread_should_stop()) { + did_flush = false; if (gfs2_jrnl_flush_reqd(sdp) || t == 0) { gfs2_ail1_empty(sdp); gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); + did_flush = true; } if (gfs2_ail_flush_reqd(sdp)) { @@ -926,9 +934,10 @@ int gfs2_logd(void *data) gfs2_ail1_wait(sdp); gfs2_ail1_empty(sdp); gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); + did_flush = true; } - if (!gfs2_ail_flush_reqd(sdp)) + if (!gfs2_ail_flush_reqd(sdp) || did_flush) wake_up(&sdp->sd_log_waitq); t = gfs2_tune_get(sdp, gt_logd_secs) * HZ; diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 49db8ef13fdf..663ffc135ef3 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -292,7 +292,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags, wait_on_buffer(bh); if (unlikely(!buffer_uptodate(bh))) { struct gfs2_trans *tr = current->journal_info; - if (tr && tr->tr_touched) + if (tr && test_bit(TR_TOUCHED, &tr->tr_flags)) gfs2_io_error_bh(sdp, bh); brelse(bh); *bhp = NULL; @@ -319,7 +319,7 @@ int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh) if (!buffer_uptodate(bh)) { struct gfs2_trans *tr = current->journal_info; - if (tr && tr->tr_touched) + if (tr && test_bit(TR_TOUCHED, &tr->tr_flags)) gfs2_io_error_bh(sdp, bh); return -EIO; } @@ -345,7 +345,7 @@ void gfs2_remove_from_journal(struct buffer_head *bh, int meta) tr->tr_num_buf_rm++; else tr->tr_num_databuf_rm++; - tr->tr_touched = 1; + set_bit(TR_TOUCHED, &tr->tr_flags); was_pinned = 1; brelse(bh); } diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index c0e5b9a8bf5f..b108e7ba81af 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -683,6 +683,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) goto fail_jindex; } + atomic_set(&sdp->sd_log_blks_needed, 0); if (sdp->sd_args.ar_spectator) { sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index 0c1bde395062..affef3c066e0 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -48,7 +48,7 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, tr->tr_blocks = blocks; tr->tr_revokes = revokes; tr->tr_reserved = 1; - tr->tr_alloced = 1; + set_bit(TR_ALLOCED, &tr->tr_flags); if (blocks) tr->tr_reserved += 6 + blocks; if (revokes) @@ -78,7 +78,8 @@ static void gfs2_print_trans(const struct gfs2_trans *tr) { pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip); pr_warn("blocks=%u revokes=%u reserved=%u touched=%u\n", - tr->tr_blocks, tr->tr_revokes, tr->tr_reserved, tr->tr_touched); + tr->tr_blocks, tr->tr_revokes, tr->tr_reserved, + test_bit(TR_TOUCHED, &tr->tr_flags)); pr_warn("Buf %u/%u Databuf %u/%u Revoke %u/%u\n", tr->tr_num_buf_new, tr->tr_num_buf_rm, tr->tr_num_databuf_new, tr->tr_num_databuf_rm, @@ -89,12 +90,12 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) { struct gfs2_trans *tr = current->journal_info; s64 nbuf; - int alloced = tr->tr_alloced; + int alloced = test_bit(TR_ALLOCED, &tr->tr_flags); BUG_ON(!tr); current->journal_info = NULL; - if (!tr->tr_touched) { + if (!test_bit(TR_TOUCHED, &tr->tr_flags)) { gfs2_log_release(sdp, tr->tr_reserved); if (alloced) { kfree(tr); @@ -112,8 +113,8 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) gfs2_print_trans(tr); gfs2_log_commit(sdp, tr); - if (alloced && !tr->tr_attached) - kfree(tr); + if (alloced && !test_bit(TR_ATTACHED, &tr->tr_flags)) + kfree(tr); up_read(&sdp->sd_log_flush_lock); if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS) @@ -169,6 +170,10 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh) } lock_buffer(bh); + if (buffer_pinned(bh)) { + set_bit(TR_TOUCHED, &tr->tr_flags); + goto out; + } gfs2_log_lock(sdp); bd = bh->b_private; if (bd == NULL) { @@ -182,7 +187,7 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh) gfs2_log_lock(sdp); } gfs2_assert(sdp, bd->bd_gl == gl); - tr->tr_touched = 1; + set_bit(TR_TOUCHED, &tr->tr_flags); if (list_empty(&bd->bd_list)) { set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); @@ -191,45 +196,24 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh) list_add_tail(&bd->bd_list, &tr->tr_databuf); } gfs2_log_unlock(sdp); +out: unlock_buffer(bh); } -static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) -{ - struct gfs2_meta_header *mh; - struct gfs2_trans *tr; - enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state); - - tr = current->journal_info; - tr->tr_touched = 1; - if (!list_empty(&bd->bd_list)) - return; - set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); - set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); - mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; - if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) { - pr_err("Attempting to add uninitialised block to journal (inplace block=%lld)\n", - (unsigned long long)bd->bd_bh->b_blocknr); - BUG(); - } - if (unlikely(state == SFS_FROZEN)) { - printk(KERN_INFO "GFS2:adding buf while frozen\n"); - gfs2_assert_withdraw(sdp, 0); - } - gfs2_pin(sdp, bd->bd_bh); - mh->__pad0 = cpu_to_be64(0); - mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); - list_add(&bd->bd_list, &tr->tr_buf); - tr->tr_num_buf_new++; -} - void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) { struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; struct gfs2_bufdata *bd; + struct gfs2_meta_header *mh; + struct gfs2_trans *tr = current->journal_info; + enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state); lock_buffer(bh); + if (buffer_pinned(bh)) { + set_bit(TR_TOUCHED, &tr->tr_flags); + goto out; + } gfs2_log_lock(sdp); bd = bh->b_private; if (bd == NULL) { @@ -245,8 +229,29 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) gfs2_log_lock(sdp); } gfs2_assert(sdp, bd->bd_gl == gl); - meta_lo_add(sdp, bd); + set_bit(TR_TOUCHED, &tr->tr_flags); + if (!list_empty(&bd->bd_list)) + goto out_unlock; + set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); + set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); + mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; + if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) { + pr_err("Attempting to add uninitialised block to journal (inplace block=%lld)\n", + (unsigned long long)bd->bd_bh->b_blocknr); + BUG(); + } + if (unlikely(state == SFS_FROZEN)) { + printk(KERN_INFO "GFS2:adding buf while frozen\n"); + gfs2_assert_withdraw(sdp, 0); + } + gfs2_pin(sdp, bd->bd_bh); + mh->__pad0 = cpu_to_be64(0); + mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); + list_add(&bd->bd_list, &tr->tr_buf); + tr->tr_num_buf_new++; +out_unlock: gfs2_log_unlock(sdp); +out: unlock_buffer(bh); } @@ -256,7 +261,7 @@ void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) BUG_ON(!list_empty(&bd->bd_list)); gfs2_add_revoke(sdp, bd); - tr->tr_touched = 1; + set_bit(TR_TOUCHED, &tr->tr_flags); tr->tr_num_revoke++; } diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 8c514367ba5a..b6b194ec1b4f 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -393,7 +393,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) /* Do we need to erase the effects of a prior jbd2_journal_flush? */ if (journal->j_flags & JBD2_FLUSHED) { jbd_debug(3, "super block updated\n"); - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); /* * We hold j_checkpoint_mutex so tail cannot change under us. * We don't need any special data guarantees for writing sb diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index a097048ed1a3..a1a359bfcc9c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -276,11 +276,11 @@ loop: goto loop; end_loop: - write_unlock(&journal->j_state_lock); del_timer_sync(&journal->j_commit_timer); journal->j_task = NULL; wake_up(&journal->j_wait_done_commit); jbd_debug(1, "Journal thread exiting.\n"); + write_unlock(&journal->j_state_lock); return 0; } @@ -944,7 +944,7 @@ out: */ void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block) { - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); if (tid_gt(tid, journal->j_tail_sequence)) __jbd2_update_log_tail(journal, tid, block); mutex_unlock(&journal->j_checkpoint_mutex); @@ -1304,7 +1304,7 @@ static int journal_reset(journal_t *journal) journal->j_flags |= JBD2_FLUSHED; } else { /* Lock here to make assertions happy... */ - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); /* * Update log tail information. We use REQ_FUA since new * transaction will start reusing journal space and so we @@ -1691,7 +1691,7 @@ int jbd2_journal_destroy(journal_t *journal) spin_lock(&journal->j_list_lock); while (journal->j_checkpoint_transactions != NULL) { spin_unlock(&journal->j_list_lock); - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); err = jbd2_log_do_checkpoint(journal); mutex_unlock(&journal->j_checkpoint_mutex); /* @@ -1713,7 +1713,7 @@ int jbd2_journal_destroy(journal_t *journal) if (journal->j_sb_buffer) { if (!is_journal_aborted(journal)) { - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); write_lock(&journal->j_state_lock); journal->j_tail_sequence = @@ -1955,7 +1955,7 @@ int jbd2_journal_flush(journal_t *journal) spin_lock(&journal->j_list_lock); while (!err && journal->j_checkpoint_transactions != NULL) { spin_unlock(&journal->j_list_lock); - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); err = jbd2_log_do_checkpoint(journal); mutex_unlock(&journal->j_checkpoint_mutex); spin_lock(&journal->j_list_lock); @@ -1965,7 +1965,7 @@ int jbd2_journal_flush(journal_t *journal) if (is_journal_aborted(journal)) return -EIO; - mutex_lock(&journal->j_checkpoint_mutex); + mutex_lock_io(&journal->j_checkpoint_mutex); if (!err) { err = jbd2_cleanup_journal_tail(journal); if (err < 0) { diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index e1652665bd93..5e659ee08d6a 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1863,7 +1863,9 @@ static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh) __blist_del_buffer(list, jh); jh->b_jlist = BJ_None; - if (test_clear_buffer_jbddirty(bh)) + if (transaction && is_journal_aborted(transaction->t_journal)) + clear_buffer_jbddirty(bh); + else if (test_clear_buffer_jbddirty(bh)) mark_buffer_dirty(bh); /* Expose it to the VM */ } diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index bbc175d4213d..a4c46221755e 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -31,7 +31,6 @@ static bool should_merge(struct fsnotify_event *old_fsn, static int fanotify_merge(struct list_head *list, struct fsnotify_event *event) { struct fsnotify_event *test_event; - bool do_merge = false; pr_debug("%s: list=%p event=%p\n", __func__, list, event); @@ -47,16 +46,12 @@ static int fanotify_merge(struct list_head *list, struct fsnotify_event *event) list_for_each_entry_reverse(test_event, list, list) { if (should_merge(test_event, event)) { - do_merge = true; - break; + test_event->mask |= event->mask; + return 1; } } - if (!do_merge) - return 0; - - test_event->mask |= event->mask; - return 1; + return 0; } #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS diff --git a/fs/ocfs2/cluster/netdebug.c b/fs/ocfs2/cluster/netdebug.c index 27d1242c8383..564c504d6efd 100644 --- a/fs/ocfs2/cluster/netdebug.c +++ b/fs/ocfs2/cluster/netdebug.c @@ -349,7 +349,7 @@ static void sc_show_sock_container(struct seq_file *seq, " func key: 0x%08x\n" " func type: %u\n", sc, - atomic_read(&sc->sc_kref.refcount), + kref_read(&sc->sc_kref), &saddr, inet ? ntohs(sport) : 0, &daddr, inet ? ntohs(dport) : 0, sc->sc_node->nd_name, diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index d4b5c81f0445..ec000575e863 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -97,7 +97,7 @@ typeof(sc) __sc = (sc); \ mlog(ML_SOCKET, "[sc %p refs %d sock %p node %u page %p " \ "pg_off %zu] " fmt, __sc, \ - atomic_read(&__sc->sc_kref.refcount), __sc->sc_sock, \ + kref_read(&__sc->sc_kref), __sc->sc_sock, \ __sc->sc_node->nd_num, __sc->sc_page, __sc->sc_page_off , \ ##args); \ } while (0) diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index e7b760deefae..9b984cae4c4e 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -81,7 +81,7 @@ static void __dlm_print_lock(struct dlm_lock *lock) lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), - atomic_read(&lock->lock_refs.refcount), + kref_read(&lock->lock_refs), (list_empty(&lock->ast_list) ? 'y' : 'n'), (lock->ast_pending ? 'y' : 'n'), (list_empty(&lock->bast_list) ? 'y' : 'n'), @@ -106,7 +106,7 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) printk("lockres: %s, owner=%u, state=%u\n", buf, res->owner, res->state); printk(" last used: %lu, refcnt: %u, on purge list: %s\n", - res->last_used, atomic_read(&res->refs.refcount), + res->last_used, kref_read(&res->refs), list_empty(&res->purge) ? "no" : "yes"); printk(" on dirty list: %s, on reco list: %s, " "migrating pending: %s\n", @@ -298,7 +298,7 @@ static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) mle_type, mle->master, mle->new_master, !list_empty(&mle->hb_events), !!mle->inuse, - atomic_read(&mle->mle_refs.refcount)); + kref_read(&mle->mle_refs)); out += snprintf(buf + out, len - out, "Maybe="); out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES, @@ -494,7 +494,7 @@ static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len) lock->ast_pending, lock->bast_pending, lock->convert_pending, lock->lock_pending, lock->cancel_pending, lock->unlock_pending, - atomic_read(&lock->lock_refs.refcount)); + kref_read(&lock->lock_refs)); spin_unlock(&lock->spinlock); return out; @@ -521,7 +521,7 @@ static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) !list_empty(&res->recovering), res->inflight_locks, res->migration_pending, atomic_read(&res->asts_reserved), - atomic_read(&res->refs.refcount)); + kref_read(&res->refs)); /* refmap */ out += snprintf(buf + out, len - out, "RMAP:"); @@ -777,7 +777,7 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) /* Purge Count: xxx Refs: xxx */ out += snprintf(buf + out, len - out, "Purge Count: %d Refs: %d\n", dlm->purge_count, - atomic_read(&dlm->dlm_refs.refcount)); + kref_read(&dlm->dlm_refs)); /* Dead Node: xxx */ out += snprintf(buf + out, len - out, diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 733e4e79c8e2..32fd261ae13d 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -2072,7 +2072,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain, INIT_LIST_HEAD(&dlm->dlm_eviction_callbacks); mlog(0, "context init: refcount %u\n", - atomic_read(&dlm->dlm_refs.refcount)); + kref_read(&dlm->dlm_refs)); leave: if (ret < 0 && dlm) { diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index a464c8088170..7025d8c27999 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -233,7 +233,7 @@ static void __dlm_put_mle(struct dlm_master_list_entry *mle) assert_spin_locked(&dlm->spinlock); assert_spin_locked(&dlm->master_lock); - if (!atomic_read(&mle->mle_refs.refcount)) { + if (!kref_read(&mle->mle_refs)) { /* this may or may not crash, but who cares. * it's a BUG. */ mlog(ML_ERROR, "bad mle: %p\n", mle); @@ -1124,9 +1124,9 @@ recheck: unsigned long timeo = msecs_to_jiffies(DLM_MASTERY_TIMEOUT_MS); /* - if (atomic_read(&mle->mle_refs.refcount) < 2) + if (kref_read(&mle->mle_refs) < 2) mlog(ML_ERROR, "mle (%p) refs=%d, name=%.*s\n", mle, - atomic_read(&mle->mle_refs.refcount), + kref_read(&mle->mle_refs), res->lockname.len, res->lockname.name); */ atomic_set(&mle->woken, 0); @@ -1979,7 +1979,7 @@ ok: * on this mle. */ spin_lock(&dlm->master_lock); - rr = atomic_read(&mle->mle_refs.refcount); + rr = kref_read(&mle->mle_refs); if (mle->inuse > 0) { if (extra_ref && rr < 3) err = 1; diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c index 1082b2c3014b..63d701cd1e2e 100644 --- a/fs/ocfs2/dlm/dlmunlock.c +++ b/fs/ocfs2/dlm/dlmunlock.c @@ -251,7 +251,7 @@ leave: mlog(0, "lock %u:%llu should be gone now! refs=%d\n", dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), - atomic_read(&lock->lock_refs.refcount)-1); + kref_read(&lock->lock_refs)-1); dlm_lock_put(lock); } if (actions & DLM_UNLOCK_CALL_AST) diff --git a/fs/proc/array.c b/fs/proc/array.c index 51a4213afa2e..fe12b519d09b 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -401,8 +401,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, unsigned long long start_time; unsigned long cmin_flt = 0, cmaj_flt = 0; unsigned long min_flt = 0, maj_flt = 0; - cputime_t cutime, cstime, utime, stime; - cputime_t cgtime, gtime; + u64 cutime, cstime, utime, stime; + u64 cgtime, gtime; unsigned long rsslim = 0; char tcomm[sizeof(task->comm)]; unsigned long flags; @@ -497,10 +497,10 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, seq_put_decimal_ull(m, " ", cmin_flt); seq_put_decimal_ull(m, " ", maj_flt); seq_put_decimal_ull(m, " ", cmaj_flt); - seq_put_decimal_ull(m, " ", cputime_to_clock_t(utime)); - seq_put_decimal_ull(m, " ", cputime_to_clock_t(stime)); - seq_put_decimal_ll(m, " ", cputime_to_clock_t(cutime)); - seq_put_decimal_ll(m, " ", cputime_to_clock_t(cstime)); + seq_put_decimal_ull(m, " ", nsec_to_clock_t(utime)); + seq_put_decimal_ull(m, " ", nsec_to_clock_t(stime)); + seq_put_decimal_ll(m, " ", nsec_to_clock_t(cutime)); + seq_put_decimal_ll(m, " ", nsec_to_clock_t(cstime)); seq_put_decimal_ll(m, " ", priority); seq_put_decimal_ll(m, " ", nice); seq_put_decimal_ll(m, " ", num_threads); @@ -542,8 +542,8 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, seq_put_decimal_ull(m, " ", task->rt_priority); seq_put_decimal_ull(m, " ", task->policy); seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task)); - seq_put_decimal_ull(m, " ", cputime_to_clock_t(gtime)); - seq_put_decimal_ll(m, " ", cputime_to_clock_t(cgtime)); + seq_put_decimal_ull(m, " ", nsec_to_clock_t(gtime)); + seq_put_decimal_ll(m, " ", nsec_to_clock_t(cgtime)); if (mm && permitted) { seq_put_decimal_ull(m, " ", mm->start_data); diff --git a/fs/proc/base.c b/fs/proc/base.c index 87c9a9aacda3..b1f7d30e96c2 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2179,7 +2179,7 @@ static const struct file_operations proc_map_files_operations = { .llseek = generic_file_llseek, }; -#ifdef CONFIG_CHECKPOINT_RESTORE +#if defined(CONFIG_CHECKPOINT_RESTORE) && defined(CONFIG_POSIX_TIMERS) struct timers_private { struct pid *pid; struct task_struct *task; @@ -2936,7 +2936,7 @@ static const struct pid_entry tgid_base_stuff[] = { REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations), REG("setgroups", S_IRUGO|S_IWUSR, proc_setgroups_operations), #endif -#ifdef CONFIG_CHECKPOINT_RESTORE +#if defined(CONFIG_CHECKPOINT_RESTORE) && defined(CONFIG_POSIX_TIMERS) REG("timers", S_IRUGO, proc_timers_operations), #endif REG("timerslack_ns", S_IRUGO|S_IWUGO, proc_pid_set_timerslack_ns_operations), diff --git a/fs/proc/stat.c b/fs/proc/stat.c index d700c42b3572..e47c3e8c4dfe 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -21,9 +21,9 @@ #ifdef arch_idle_time -static cputime64_t get_idle_time(int cpu) +static u64 get_idle_time(int cpu) { - cputime64_t idle; + u64 idle; idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE]; if (cpu_online(cpu) && !nr_iowait_cpu(cpu)) @@ -31,9 +31,9 @@ static cputime64_t get_idle_time(int cpu) return idle; } -static cputime64_t get_iowait_time(int cpu) +static u64 get_iowait_time(int cpu) { - cputime64_t iowait; + u64 iowait; iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT]; if (cpu_online(cpu) && nr_iowait_cpu(cpu)) @@ -45,32 +45,32 @@ static cputime64_t get_iowait_time(int cpu) static u64 get_idle_time(int cpu) { - u64 idle, idle_time = -1ULL; + u64 idle, idle_usecs = -1ULL; if (cpu_online(cpu)) - idle_time = get_cpu_idle_time_us(cpu, NULL); + idle_usecs = get_cpu_idle_time_us(cpu, NULL); - if (idle_time == -1ULL) + if (idle_usecs == -1ULL) /* !NO_HZ or cpu offline so we can rely on cpustat.idle */ idle = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE]; else - idle = usecs_to_cputime64(idle_time); + idle = idle_usecs * NSEC_PER_USEC; return idle; } static u64 get_iowait_time(int cpu) { - u64 iowait, iowait_time = -1ULL; + u64 iowait, iowait_usecs = -1ULL; if (cpu_online(cpu)) - iowait_time = get_cpu_iowait_time_us(cpu, NULL); + iowait_usecs = get_cpu_iowait_time_us(cpu, NULL); - if (iowait_time == -1ULL) + if (iowait_usecs == -1ULL) /* !NO_HZ or cpu offline so we can rely on cpustat.iowait */ iowait = kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT]; else - iowait = usecs_to_cputime64(iowait_time); + iowait = iowait_usecs * NSEC_PER_USEC; return iowait; } @@ -115,16 +115,16 @@ static int show_stat(struct seq_file *p, void *v) } sum += arch_irq_stat(); - seq_put_decimal_ull(p, "cpu ", cputime64_to_clock_t(user)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice)); + seq_put_decimal_ull(p, "cpu ", nsec_to_clock_t(user)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(system)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice)); seq_putc(p, '\n'); for_each_online_cpu(i) { @@ -140,16 +140,16 @@ static int show_stat(struct seq_file *p, void *v) guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST]; guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE]; seq_printf(p, "cpu%d", i); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(user)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest)); - seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(user)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(system)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest)); + seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice)); seq_putc(p, '\n'); } seq_put_decimal_ull(p, "intr ", (unsigned long long)sum); diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c index 33de567c25af..7981c4ffe787 100644 --- a/fs/proc/uptime.c +++ b/fs/proc/uptime.c @@ -5,23 +5,20 @@ #include <linux/seq_file.h> #include <linux/time.h> #include <linux/kernel_stat.h> -#include <linux/cputime.h> static int uptime_proc_show(struct seq_file *m, void *v) { struct timespec uptime; struct timespec idle; - u64 idletime; u64 nsec; u32 rem; int i; - idletime = 0; + nsec = 0; for_each_possible_cpu(i) - idletime += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE]; + nsec += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE]; get_monotonic_boottime(&uptime); - nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC; idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem); idle.tv_nsec = rem; seq_printf(m, "%lu.%02lu %lu.%02lu\n", diff --git a/fs/timerfd.c b/fs/timerfd.c index c173cc196175..384fa759a563 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -40,6 +40,7 @@ struct timerfd_ctx { short unsigned settime_flags; /* to show in fdinfo */ struct rcu_head rcu; struct list_head clist; + spinlock_t cancel_lock; bool might_cancel; }; @@ -112,7 +113,7 @@ void timerfd_clock_was_set(void) rcu_read_unlock(); } -static void timerfd_remove_cancel(struct timerfd_ctx *ctx) +static void __timerfd_remove_cancel(struct timerfd_ctx *ctx) { if (ctx->might_cancel) { ctx->might_cancel = false; @@ -122,6 +123,13 @@ static void timerfd_remove_cancel(struct timerfd_ctx *ctx) } } +static void timerfd_remove_cancel(struct timerfd_ctx *ctx) +{ + spin_lock(&ctx->cancel_lock); + __timerfd_remove_cancel(ctx); + spin_unlock(&ctx->cancel_lock); +} + static bool timerfd_canceled(struct timerfd_ctx *ctx) { if (!ctx->might_cancel || ctx->moffs != KTIME_MAX) @@ -132,6 +140,7 @@ static bool timerfd_canceled(struct timerfd_ctx *ctx) static void timerfd_setup_cancel(struct timerfd_ctx *ctx, int flags) { + spin_lock(&ctx->cancel_lock); if ((ctx->clockid == CLOCK_REALTIME || ctx->clockid == CLOCK_REALTIME_ALARM) && (flags & TFD_TIMER_ABSTIME) && (flags & TFD_TIMER_CANCEL_ON_SET)) { @@ -141,9 +150,10 @@ static void timerfd_setup_cancel(struct timerfd_ctx *ctx, int flags) list_add_rcu(&ctx->clist, &cancel_list); spin_unlock(&cancel_lock); } - } else if (ctx->might_cancel) { - timerfd_remove_cancel(ctx); + } else { + __timerfd_remove_cancel(ctx); } + spin_unlock(&ctx->cancel_lock); } static ktime_t timerfd_get_remaining(struct timerfd_ctx *ctx) @@ -400,6 +410,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags) return -ENOMEM; init_waitqueue_head(&ctx->wqh); + spin_lock_init(&ctx->cancel_lock); ctx->clockid = clockid; if (isalarm(ctx)) diff --git a/fs/ubifs/crypto.c b/fs/ubifs/crypto.c index 3402720f2b28..382ed428cfd2 100644 --- a/fs/ubifs/crypto.c +++ b/fs/ubifs/crypto.c @@ -26,15 +26,6 @@ static unsigned int ubifs_crypt_max_namelen(struct inode *inode) return UBIFS_MAX_NLEN; } -static int ubifs_key_prefix(struct inode *inode, u8 **key) -{ - static char prefix[] = "ubifs:"; - - *key = prefix; - - return sizeof(prefix) - 1; -} - int ubifs_encrypt(const struct inode *inode, struct ubifs_data_node *dn, unsigned int in_len, unsigned int *out_len, int block) { @@ -86,12 +77,12 @@ int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn, return 0; } -struct fscrypt_operations ubifs_crypt_operations = { +const struct fscrypt_operations ubifs_crypt_operations = { .flags = FS_CFLG_OWN_PAGES, + .key_prefix = "ubifs:", .get_context = ubifs_crypt_get_context, .set_context = ubifs_crypt_set_context, .is_encrypted = __ubifs_crypt_is_encrypted, .empty_dir = ubifs_crypt_empty_dir, .max_namelen = ubifs_crypt_max_namelen, - .key_prefix = ubifs_key_prefix, }; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index e08aa04fc835..b73811bd7676 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -2000,7 +2000,7 @@ static struct ubifs_info *alloc_ubifs_info(struct ubi_volume_desc *ubi) } #ifndef CONFIG_UBIFS_FS_ENCRYPTION -struct fscrypt_operations ubifs_crypt_operations = { +const struct fscrypt_operations ubifs_crypt_operations = { .is_encrypted = __ubifs_crypt_is_encrypted, }; #endif diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index ca72382ce6cc..f0c86f076535 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -38,7 +38,11 @@ #include <linux/backing-dev.h> #include <linux/security.h> #include <linux/xattr.h> -#include <linux/fscrypto.h> +#ifdef CONFIG_UBIFS_FS_ENCRYPTION +#include <linux/fscrypt_supp.h> +#else +#include <linux/fscrypt_notsupp.h> +#endif #include <linux/random.h> #include "ubifs-media.h" @@ -1797,28 +1801,6 @@ int ubifs_decompress(const struct ubifs_info *c, const void *buf, int len, #include "key.h" #ifndef CONFIG_UBIFS_FS_ENCRYPTION -#define fscrypt_set_d_op(i) -#define fscrypt_get_ctx fscrypt_notsupp_get_ctx -#define fscrypt_release_ctx fscrypt_notsupp_release_ctx -#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page -#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page -#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages -#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page -#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page -#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range -#define fscrypt_ioctl_set_policy fscrypt_notsupp_ioctl_set_policy -#define fscrypt_ioctl_get_policy fscrypt_notsupp_ioctl_get_policy -#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context -#define fscrypt_inherit_context fscrypt_notsupp_inherit_context -#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info -#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info -#define fscrypt_setup_filename fscrypt_notsupp_setup_filename -#define fscrypt_free_filename fscrypt_notsupp_free_filename -#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size -#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer -#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer -#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr -#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk static inline int ubifs_encrypt(const struct inode *inode, struct ubifs_data_node *dn, unsigned int in_len, unsigned int *out_len, @@ -1842,7 +1824,7 @@ int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn, unsigned int *out_len, int block); #endif -extern struct fscrypt_operations ubifs_crypt_operations; +extern const struct fscrypt_operations ubifs_crypt_operations; static inline bool __ubifs_crypt_is_encrypted(struct inode *inode) { diff --git a/fs/udf/ecma_167.h b/fs/udf/ecma_167.h index 4792b771aa80..9f24bd1a9f44 100644 --- a/fs/udf/ecma_167.h +++ b/fs/udf/ecma_167.h @@ -41,7 +41,7 @@ struct charspec { uint8_t charSetType; uint8_t charSetInfo[63]; -} __attribute__ ((packed)); +} __packed; /* Character Set Type (ECMA 167r3 1/7.2.1.1) */ #define CHARSPEC_TYPE_CS0 0x00 /* (1/7.2.2) */ @@ -68,7 +68,7 @@ struct timestamp { uint8_t centiseconds; uint8_t hundredsOfMicroseconds; uint8_t microseconds; -} __attribute__ ((packed)); +} __packed; /* Type and Time Zone (ECMA 167r3 1/7.3.1) */ #define TIMESTAMP_TYPE_MASK 0xF000 @@ -82,7 +82,7 @@ struct regid { uint8_t flags; uint8_t ident[23]; uint8_t identSuffix[8]; -} __attribute__ ((packed)); +} __packed; /* Flags (ECMA 167r3 1/7.4.1) */ #define ENTITYID_FLAGS_DIRTY 0x00 @@ -95,7 +95,7 @@ struct volStructDesc { uint8_t stdIdent[VSD_STD_ID_LEN]; uint8_t structVersion; uint8_t structData[2041]; -} __attribute__ ((packed)); +} __packed; /* Standard Identifier (EMCA 167r2 2/9.1.2) */ #define VSD_STD_ID_NSR02 "NSR02" /* (3/9.1) */ @@ -114,7 +114,7 @@ struct beginningExtendedAreaDesc { uint8_t stdIdent[VSD_STD_ID_LEN]; uint8_t structVersion; uint8_t structData[2041]; -} __attribute__ ((packed)); +} __packed; /* Terminating Extended Area Descriptor (ECMA 167r3 2/9.3) */ struct terminatingExtendedAreaDesc { @@ -122,7 +122,7 @@ struct terminatingExtendedAreaDesc { uint8_t stdIdent[VSD_STD_ID_LEN]; uint8_t structVersion; uint8_t structData[2041]; -} __attribute__ ((packed)); +} __packed; /* Boot Descriptor (ECMA 167r3 2/9.4) */ struct bootDesc { @@ -140,7 +140,7 @@ struct bootDesc { __le16 flags; uint8_t reserved2[32]; uint8_t bootUse[1906]; -} __attribute__ ((packed)); +} __packed; /* Flags (ECMA 167r3 2/9.4.12) */ #define BOOT_FLAGS_ERASE 0x01 @@ -149,7 +149,7 @@ struct bootDesc { struct extent_ad { __le32 extLength; __le32 extLocation; -} __attribute__ ((packed)); +} __packed; struct kernel_extent_ad { uint32_t extLength; @@ -166,7 +166,7 @@ struct tag { __le16 descCRC; __le16 descCRCLength; __le32 tagLocation; -} __attribute__ ((packed)); +} __packed; /* Tag Identifier (ECMA 167r3 3/7.2.1) */ #define TAG_IDENT_PVD 0x0001 @@ -186,7 +186,7 @@ struct NSRDesc { uint8_t structVersion; uint8_t reserved; uint8_t structData[2040]; -} __attribute__ ((packed)); +} __packed; /* Primary Volume Descriptor (ECMA 167r3 3/10.1) */ struct primaryVolDesc { @@ -212,7 +212,7 @@ struct primaryVolDesc { __le32 predecessorVolDescSeqLocation; __le16 flags; uint8_t reserved[22]; -} __attribute__ ((packed)); +} __packed; /* Flags (ECMA 167r3 3/10.1.21) */ #define PVD_FLAGS_VSID_COMMON 0x0001 @@ -223,7 +223,7 @@ struct anchorVolDescPtr { struct extent_ad mainVolDescSeqExt; struct extent_ad reserveVolDescSeqExt; uint8_t reserved[480]; -} __attribute__ ((packed)); +} __packed; /* Volume Descriptor Pointer (ECMA 167r3 3/10.3) */ struct volDescPtr { @@ -231,7 +231,7 @@ struct volDescPtr { __le32 volDescSeqNum; struct extent_ad nextVolDescSeqExt; uint8_t reserved[484]; -} __attribute__ ((packed)); +} __packed; /* Implementation Use Volume Descriptor (ECMA 167r3 3/10.4) */ struct impUseVolDesc { @@ -239,7 +239,7 @@ struct impUseVolDesc { __le32 volDescSeqNum; struct regid impIdent; uint8_t impUse[460]; -} __attribute__ ((packed)); +} __packed; /* Partition Descriptor (ECMA 167r3 3/10.5) */ struct partitionDesc { @@ -255,7 +255,7 @@ struct partitionDesc { struct regid impIdent; uint8_t impUse[128]; uint8_t reserved[156]; -} __attribute__ ((packed)); +} __packed; /* Partition Flags (ECMA 167r3 3/10.5.3) */ #define PD_PARTITION_FLAGS_ALLOC 0x0001 @@ -291,14 +291,14 @@ struct logicalVolDesc { uint8_t impUse[128]; struct extent_ad integritySeqExt; uint8_t partitionMaps[0]; -} __attribute__ ((packed)); +} __packed; /* Generic Partition Map (ECMA 167r3 3/10.7.1) */ struct genericPartitionMap { uint8_t partitionMapType; uint8_t partitionMapLength; uint8_t partitionMapping[0]; -} __attribute__ ((packed)); +} __packed; /* Partition Map Type (ECMA 167r3 3/10.7.1.1) */ #define GP_PARTITION_MAP_TYPE_UNDEF 0x00 @@ -311,14 +311,14 @@ struct genericPartitionMap1 { uint8_t partitionMapLength; __le16 volSeqNum; __le16 partitionNum; -} __attribute__ ((packed)); +} __packed; /* Type 2 Partition Map (ECMA 167r3 3/10.7.3) */ struct genericPartitionMap2 { uint8_t partitionMapType; uint8_t partitionMapLength; uint8_t partitionIdent[62]; -} __attribute__ ((packed)); +} __packed; /* Unallocated Space Descriptor (ECMA 167r3 3/10.8) */ struct unallocSpaceDesc { @@ -326,13 +326,13 @@ struct unallocSpaceDesc { __le32 volDescSeqNum; __le32 numAllocDescs; struct extent_ad allocDescs[0]; -} __attribute__ ((packed)); +} __packed; /* Terminating Descriptor (ECMA 167r3 3/10.9) */ struct terminatingDesc { struct tag descTag; uint8_t reserved[496]; -} __attribute__ ((packed)); +} __packed; /* Logical Volume Integrity Descriptor (ECMA 167r3 3/10.10) */ struct logicalVolIntegrityDesc { @@ -346,7 +346,7 @@ struct logicalVolIntegrityDesc { __le32 freeSpaceTable[0]; __le32 sizeTable[0]; uint8_t impUse[0]; -} __attribute__ ((packed)); +} __packed; /* Integrity Type (ECMA 167r3 3/10.10.3) */ #define LVID_INTEGRITY_TYPE_OPEN 0x00000000 @@ -356,7 +356,7 @@ struct logicalVolIntegrityDesc { struct lb_addr { __le32 logicalBlockNum; __le16 partitionReferenceNum; -} __attribute__ ((packed)); +} __packed; /* ... and its in-core analog */ struct kernel_lb_addr { @@ -368,14 +368,14 @@ struct kernel_lb_addr { struct short_ad { __le32 extLength; __le32 extPosition; -} __attribute__ ((packed)); +} __packed; /* Long Allocation Descriptor (ECMA 167r3 4/14.14.2) */ struct long_ad { __le32 extLength; struct lb_addr extLocation; uint8_t impUse[6]; -} __attribute__ ((packed)); +} __packed; struct kernel_long_ad { uint32_t extLength; @@ -389,7 +389,7 @@ struct ext_ad { __le32 recordedLength; __le32 informationLength; struct lb_addr extLocation; -} __attribute__ ((packed)); +} __packed; struct kernel_ext_ad { uint32_t extLength; @@ -434,7 +434,7 @@ struct fileSetDesc { struct long_ad nextExt; struct long_ad streamDirectoryICB; uint8_t reserved[32]; -} __attribute__ ((packed)); +} __packed; /* Partition Header Descriptor (ECMA 167r3 4/14.3) */ struct partitionHeaderDesc { @@ -444,7 +444,7 @@ struct partitionHeaderDesc { struct short_ad freedSpaceTable; struct short_ad freedSpaceBitmap; uint8_t reserved[88]; -} __attribute__ ((packed)); +} __packed; /* File Identifier Descriptor (ECMA 167r3 4/14.4) */ struct fileIdentDesc { @@ -457,7 +457,7 @@ struct fileIdentDesc { uint8_t impUse[0]; uint8_t fileIdent[0]; uint8_t padding[0]; -} __attribute__ ((packed)); +} __packed; /* File Characteristics (ECMA 167r3 4/14.4.3) */ #define FID_FILE_CHAR_HIDDEN 0x01 @@ -471,7 +471,7 @@ struct allocExtDesc { struct tag descTag; __le32 previousAllocExtLocation; __le32 lengthAllocDescs; -} __attribute__ ((packed)); +} __packed; /* ICB Tag (ECMA 167r3 4/14.6) */ struct icbtag { @@ -483,7 +483,7 @@ struct icbtag { uint8_t fileType; struct lb_addr parentICBLocation; __le16 flags; -} __attribute__ ((packed)); +} __packed; /* Strategy Type (ECMA 167r3 4/14.6.2) */ #define ICBTAG_STRATEGY_TYPE_UNDEF 0x0000 @@ -531,13 +531,13 @@ struct indirectEntry { struct tag descTag; struct icbtag icbTag; struct long_ad indirectICB; -} __attribute__ ((packed)); +} __packed; /* Terminal Entry (ECMA 167r3 4/14.8) */ struct terminalEntry { struct tag descTag; struct icbtag icbTag; -} __attribute__ ((packed)); +} __packed; /* File Entry (ECMA 167r3 4/14.9) */ struct fileEntry { @@ -563,7 +563,7 @@ struct fileEntry { __le32 lengthAllocDescs; uint8_t extendedAttr[0]; uint8_t allocDescs[0]; -} __attribute__ ((packed)); +} __packed; /* Permissions (ECMA 167r3 4/14.9.5) */ #define FE_PERM_O_EXEC 0x00000001U @@ -607,7 +607,7 @@ struct extendedAttrHeaderDesc { struct tag descTag; __le32 impAttrLocation; __le32 appAttrLocation; -} __attribute__ ((packed)); +} __packed; /* Generic Format (ECMA 167r3 4/14.10.2) */ struct genericFormat { @@ -616,7 +616,7 @@ struct genericFormat { uint8_t reserved[3]; __le32 attrLength; uint8_t attrData[0]; -} __attribute__ ((packed)); +} __packed; /* Character Set Information (ECMA 167r3 4/14.10.3) */ struct charSetInfo { @@ -627,7 +627,7 @@ struct charSetInfo { __le32 escapeSeqLength; uint8_t charSetType; uint8_t escapeSeq[0]; -} __attribute__ ((packed)); +} __packed; /* Alternate Permissions (ECMA 167r3 4/14.10.4) */ struct altPerms { @@ -638,7 +638,7 @@ struct altPerms { __le16 ownerIdent; __le16 groupIdent; __le16 permission; -} __attribute__ ((packed)); +} __packed; /* File Times Extended Attribute (ECMA 167r3 4/14.10.5) */ struct fileTimesExtAttr { @@ -649,7 +649,7 @@ struct fileTimesExtAttr { __le32 dataLength; __le32 fileTimeExistence; uint8_t fileTimes; -} __attribute__ ((packed)); +} __packed; /* FileTimeExistence (ECMA 167r3 4/14.10.5.6) */ #define FTE_CREATION 0x00000001 @@ -666,7 +666,7 @@ struct infoTimesExtAttr { __le32 dataLength; __le32 infoTimeExistence; uint8_t infoTimes[0]; -} __attribute__ ((packed)); +} __packed; /* Device Specification (ECMA 167r3 4/14.10.7) */ struct deviceSpec { @@ -678,7 +678,7 @@ struct deviceSpec { __le32 majorDeviceIdent; __le32 minorDeviceIdent; uint8_t impUse[0]; -} __attribute__ ((packed)); +} __packed; /* Implementation Use Extended Attr (ECMA 167r3 4/14.10.8) */ struct impUseExtAttr { @@ -689,7 +689,7 @@ struct impUseExtAttr { __le32 impUseLength; struct regid impIdent; uint8_t impUse[0]; -} __attribute__ ((packed)); +} __packed; /* Application Use Extended Attribute (ECMA 167r3 4/14.10.9) */ struct appUseExtAttr { @@ -700,7 +700,7 @@ struct appUseExtAttr { __le32 appUseLength; struct regid appIdent; uint8_t appUse[0]; -} __attribute__ ((packed)); +} __packed; #define EXTATTR_CHAR_SET 1 #define EXTATTR_ALT_PERMS 3 @@ -716,7 +716,7 @@ struct unallocSpaceEntry { struct icbtag icbTag; __le32 lengthAllocDescs; uint8_t allocDescs[0]; -} __attribute__ ((packed)); +} __packed; /* Space Bitmap Descriptor (ECMA 167r3 4/14.12) */ struct spaceBitmapDesc { @@ -724,7 +724,7 @@ struct spaceBitmapDesc { __le32 numOfBits; __le32 numOfBytes; uint8_t bitmap[0]; -} __attribute__ ((packed)); +} __packed; /* Partition Integrity Entry (ECMA 167r3 4/14.13) */ struct partitionIntegrityEntry { @@ -735,7 +735,7 @@ struct partitionIntegrityEntry { uint8_t reserved[175]; struct regid impIdent; uint8_t impUse[256]; -} __attribute__ ((packed)); +} __packed; /* Short Allocation Descriptor (ECMA 167r3 4/14.14.1) */ @@ -753,7 +753,7 @@ struct partitionIntegrityEntry { struct logicalVolHeaderDesc { __le64 uniqueID; uint8_t reserved[24]; -} __attribute__ ((packed)); +} __packed; /* Path Component (ECMA 167r3 4/14.16.1) */ struct pathComponent { @@ -761,7 +761,7 @@ struct pathComponent { uint8_t lengthComponentIdent; __le16 componentFileVersionNum; dstring componentIdent[0]; -} __attribute__ ((packed)); +} __packed; /* File Entry (ECMA 167r3 4/14.17) */ struct extendedFileEntry { @@ -791,6 +791,6 @@ struct extendedFileEntry { __le32 lengthAllocDescs; uint8_t extendedAttr[0]; uint8_t allocDescs[0]; -} __attribute__ ((packed)); +} __packed; #endif /* _ECMA_167_H */ diff --git a/fs/udf/file.c b/fs/udf/file.c index dbcb3a4a0cb9..e04cc0cdca9d 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -176,54 +176,46 @@ long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = file_inode(filp); long old_block, new_block; - int result = -EINVAL; + int result; if (inode_permission(inode, MAY_READ) != 0) { udf_debug("no permission to access inode %lu\n", inode->i_ino); - result = -EPERM; - goto out; + return -EPERM; } - if (!arg) { + if (!arg && ((cmd == UDF_GETVOLIDENT) || (cmd == UDF_GETEASIZE) || + (cmd == UDF_RELOCATE_BLOCKS) || (cmd == UDF_GETEABLOCK))) { udf_debug("invalid argument to udf_ioctl\n"); - result = -EINVAL; - goto out; + return -EINVAL; } switch (cmd) { case UDF_GETVOLIDENT: if (copy_to_user((char __user *)arg, UDF_SB(inode->i_sb)->s_volume_ident, 32)) - result = -EFAULT; - else - result = 0; - goto out; + return -EFAULT; + return 0; case UDF_RELOCATE_BLOCKS: - if (!capable(CAP_SYS_ADMIN)) { - result = -EPERM; - goto out; - } - if (get_user(old_block, (long __user *)arg)) { - result = -EFAULT; - goto out; - } + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (get_user(old_block, (long __user *)arg)) + return -EFAULT; result = udf_relocate_blocks(inode->i_sb, old_block, &new_block); if (result == 0) result = put_user(new_block, (long __user *)arg); - goto out; + return result; case UDF_GETEASIZE: - result = put_user(UDF_I(inode)->i_lenEAttr, (int __user *)arg); - goto out; + return put_user(UDF_I(inode)->i_lenEAttr, (int __user *)arg); case UDF_GETEABLOCK: - result = copy_to_user((char __user *)arg, - UDF_I(inode)->i_ext.i_data, - UDF_I(inode)->i_lenEAttr) ? -EFAULT : 0; - goto out; + return copy_to_user((char __user *)arg, + UDF_I(inode)->i_ext.i_data, + UDF_I(inode)->i_lenEAttr) ? -EFAULT : 0; + default: + return -ENOIOCTLCMD; } -out: - return result; + return 0; } static int udf_release_file(struct inode *inode, struct file *filp) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 0f3db71753aa..8ec6b3df0bc7 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -43,10 +43,6 @@ #include "udf_i.h" #include "udf_sb.h" -MODULE_AUTHOR("Ben Fennema"); -MODULE_DESCRIPTION("Universal Disk Format Filesystem"); -MODULE_LICENSE("GPL"); - #define EXTENT_MERGE_SIZE 5 static umode_t udf_convert_permissions(struct fileEntry *); @@ -57,14 +53,12 @@ static sector_t inode_getblk(struct inode *, sector_t, int *, int *); static int8_t udf_insert_aext(struct inode *, struct extent_position, struct kernel_lb_addr, uint32_t); static void udf_split_extents(struct inode *, int *, int, int, - struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); + struct kernel_long_ad *, int *); static void udf_prealloc_extents(struct inode *, int, int, - struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); -static void udf_merge_extents(struct inode *, - struct kernel_long_ad[EXTENT_MERGE_SIZE], int *); -static void udf_update_extents(struct inode *, - struct kernel_long_ad[EXTENT_MERGE_SIZE], int, int, - struct extent_position *); + struct kernel_long_ad *, int *); +static void udf_merge_extents(struct inode *, struct kernel_long_ad *, int *); +static void udf_update_extents(struct inode *, struct kernel_long_ad *, int, + int, struct extent_position *); static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int); static void __udf_clear_extent_cache(struct inode *inode) @@ -111,7 +105,7 @@ static int udf_read_extent_cache(struct inode *inode, loff_t bcount, /* Add extent to extent cache */ static void udf_update_extent_cache(struct inode *inode, loff_t estart, - struct extent_position *pos, int next_epos) + struct extent_position *pos) { struct udf_inode_info *iinfo = UDF_I(inode); @@ -120,19 +114,16 @@ static void udf_update_extent_cache(struct inode *inode, loff_t estart, __udf_clear_extent_cache(inode); if (pos->bh) get_bh(pos->bh); - memcpy(&iinfo->cached_extent.epos, pos, - sizeof(struct extent_position)); + memcpy(&iinfo->cached_extent.epos, pos, sizeof(struct extent_position)); iinfo->cached_extent.lstart = estart; - if (next_epos) - switch (iinfo->i_alloc_type) { - case ICBTAG_FLAG_AD_SHORT: - iinfo->cached_extent.epos.offset -= - sizeof(struct short_ad); - break; - case ICBTAG_FLAG_AD_LONG: - iinfo->cached_extent.epos.offset -= - sizeof(struct long_ad); - } + switch (iinfo->i_alloc_type) { + case ICBTAG_FLAG_AD_SHORT: + iinfo->cached_extent.epos.offset -= sizeof(struct short_ad); + break; + case ICBTAG_FLAG_AD_LONG: + iinfo->cached_extent.epos.offset -= sizeof(struct long_ad); + break; + } spin_unlock(&iinfo->i_extent_cache_lock); } @@ -747,11 +738,8 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, ~(inode->i_sb->s_blocksize - 1)); udf_write_aext(inode, &cur_epos, &eloc, elen, 1); } - brelse(prev_epos.bh); - brelse(cur_epos.bh); - brelse(next_epos.bh); newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset); - return newblock; + goto out_free; } /* Are we beyond EOF? */ @@ -774,11 +762,9 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, /* Create extents for the hole between EOF and offset */ ret = udf_do_extend_file(inode, &prev_epos, laarr, offset); if (ret < 0) { - brelse(prev_epos.bh); - brelse(cur_epos.bh); - brelse(next_epos.bh); *err = ret; - return 0; + newblock = 0; + goto out_free; } c = 0; offset = 0; @@ -841,11 +827,9 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, iinfo->i_location.partitionReferenceNum, goal, err); if (!newblocknum) { - brelse(prev_epos.bh); - brelse(cur_epos.bh); - brelse(next_epos.bh); *err = -ENOSPC; - return 0; + newblock = 0; + goto out_free; } if (isBeyondEOF) iinfo->i_lenExtents += inode->i_sb->s_blocksize; @@ -857,14 +841,12 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, * block */ udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum); -#ifdef UDF_PREALLOCATE /* We preallocate blocks only for regular files. It also makes sense * for directories but there's a problem when to drop the * preallocation. We might use some delayed work for that but I feel * it's overengineering for a filesystem like UDF. */ if (S_ISREG(inode->i_mode)) udf_prealloc_extents(inode, c, lastblock, laarr, &endnum); -#endif /* merge any continuous blocks in laarr */ udf_merge_extents(inode, laarr, &endnum); @@ -874,15 +856,11 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, * the new number of extents is less than the old number */ udf_update_extents(inode, laarr, startnum, endnum, &prev_epos); - brelse(prev_epos.bh); - brelse(cur_epos.bh); - brelse(next_epos.bh); - newblock = udf_get_pblock(inode->i_sb, newblocknum, iinfo->i_location.partitionReferenceNum, 0); if (!newblock) { *err = -EIO; - return 0; + goto out_free; } *new = 1; iinfo->i_next_alloc_block = block; @@ -893,13 +871,15 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, udf_sync_inode(inode); else mark_inode_dirty(inode); - +out_free: + brelse(prev_epos.bh); + brelse(cur_epos.bh); + brelse(next_epos.bh); return newblock; } static void udf_split_extents(struct inode *inode, int *c, int offset, - int newblocknum, - struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], + int newblocknum, struct kernel_long_ad *laarr, int *endnum) { unsigned long blocksize = inode->i_sb->s_blocksize; @@ -963,7 +943,7 @@ static void udf_split_extents(struct inode *inode, int *c, int offset, } static void udf_prealloc_extents(struct inode *inode, int c, int lastblock, - struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], + struct kernel_long_ad *laarr, int *endnum) { int start, length = 0, currlength = 0, i; @@ -1058,8 +1038,7 @@ static void udf_prealloc_extents(struct inode *inode, int c, int lastblock, } } -static void udf_merge_extents(struct inode *inode, - struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], +static void udf_merge_extents(struct inode *inode, struct kernel_long_ad *laarr, int *endnum) { int i; @@ -1158,8 +1137,7 @@ static void udf_merge_extents(struct inode *inode, } } -static void udf_update_extents(struct inode *inode, - struct kernel_long_ad laarr[EXTENT_MERGE_SIZE], +static void udf_update_extents(struct inode *inode, struct kernel_long_ad *laarr, int startnum, int endnum, struct extent_position *epos) { @@ -1299,6 +1277,12 @@ static int udf_read_inode(struct inode *inode, bool hidden_inode) int ret = -EIO; reread: + if (iloc->partitionReferenceNum >= sbi->s_partitions) { + udf_debug("partition reference: %d > logical volume partitions: %d\n", + iloc->partitionReferenceNum, sbi->s_partitions); + return -EIO; + } + if (iloc->logicalBlockNum >= sbi->s_partmaps[iloc->partitionReferenceNum].s_partition_len) { udf_debug("block=%d, partition=%d out of range\n", @@ -1549,7 +1533,7 @@ reread: break; case ICBTAG_FILE_TYPE_SYMLINK: inode->i_data.a_ops = &udf_symlink_aops; - inode->i_op = &page_symlink_inode_operations; + inode->i_op = &udf_symlink_inode_operations; inode_nohighmem(inode); inode->i_mode = S_IFLNK | S_IRWXUGO; break; @@ -1627,6 +1611,14 @@ static int udf_sync_inode(struct inode *inode) return udf_update_inode(inode, 1); } +static void udf_adjust_time(struct udf_inode_info *iinfo, struct timespec time) +{ + if (iinfo->i_crtime.tv_sec > time.tv_sec || + (iinfo->i_crtime.tv_sec == time.tv_sec && + iinfo->i_crtime.tv_nsec > time.tv_nsec)) + iinfo->i_crtime = time; +} + static int udf_update_inode(struct inode *inode, int do_sync) { struct buffer_head *bh = NULL; @@ -1753,20 +1745,9 @@ static int udf_update_inode(struct inode *inode, int do_sync) efe->objectSize = cpu_to_le64(inode->i_size); efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded); - if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec || - (iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec && - iinfo->i_crtime.tv_nsec > inode->i_atime.tv_nsec)) - iinfo->i_crtime = inode->i_atime; - - if (iinfo->i_crtime.tv_sec > inode->i_mtime.tv_sec || - (iinfo->i_crtime.tv_sec == inode->i_mtime.tv_sec && - iinfo->i_crtime.tv_nsec > inode->i_mtime.tv_nsec)) - iinfo->i_crtime = inode->i_mtime; - - if (iinfo->i_crtime.tv_sec > inode->i_ctime.tv_sec || - (iinfo->i_crtime.tv_sec == inode->i_ctime.tv_sec && - iinfo->i_crtime.tv_nsec > inode->i_ctime.tv_nsec)) - iinfo->i_crtime = inode->i_ctime; + udf_adjust_time(iinfo, inode->i_atime); + udf_adjust_time(iinfo, inode->i_mtime); + udf_adjust_time(iinfo, inode->i_ctime); udf_time_to_disk_stamp(&efe->accessTime, inode->i_atime); udf_time_to_disk_stamp(&efe->modificationTime, inode->i_mtime); @@ -2286,8 +2267,7 @@ int8_t inode_bmap(struct inode *inode, sector_t block, uint32_t *elen, sector_t *offset) { unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits; - loff_t lbcount = 0, bcount = - (loff_t) block << blocksize_bits; + loff_t lbcount = 0, bcount = (loff_t) block << blocksize_bits; int8_t etype; struct udf_inode_info *iinfo; @@ -2308,7 +2288,7 @@ int8_t inode_bmap(struct inode *inode, sector_t block, lbcount += *elen; } while (lbcount <= bcount); /* update extent cache */ - udf_update_extent_cache(inode, lbcount - *elen, pos, 1); + udf_update_extent_cache(inode, lbcount - *elen, pos); *offset = (bcount + *elen - lbcount) >> blocksize_bits; return etype; diff --git a/fs/udf/lowlevel.c b/fs/udf/lowlevel.c index 6ad5a453af97..5c7ec121990d 100644 --- a/fs/udf/lowlevel.c +++ b/fs/udf/lowlevel.c @@ -58,7 +58,7 @@ unsigned long udf_get_last_block(struct super_block *sb) */ if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock) || lblock == 0) - lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits; + lblock = i_size_read(bdev->bd_inode) >> sb->s_blocksize_bits; if (lblock) return lblock - 1; diff --git a/fs/udf/misc.c b/fs/udf/misc.c index 71d1c25f360d..3949c4bec3a3 100644 --- a/fs/udf/misc.c +++ b/fs/udf/misc.c @@ -141,8 +141,6 @@ struct genericFormat *udf_add_extendedattr(struct inode *inode, uint32_t size, iinfo->i_lenEAttr += size; return (struct genericFormat *)&ea[offset]; } - if (loc & 0x02) - ; return NULL; } diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 2d65e280748b..babf48d0e553 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -931,7 +931,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, } inode->i_data.a_ops = &udf_symlink_aops; - inode->i_op = &page_symlink_inode_operations; + inode->i_op = &udf_symlink_inode_operations; inode_nohighmem(inode); if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { diff --git a/fs/udf/osta_udf.h b/fs/udf/osta_udf.h index fbff74654df2..a4da59e38b7f 100644 --- a/fs/udf/osta_udf.h +++ b/fs/udf/osta_udf.h @@ -70,17 +70,17 @@ struct UDFIdentSuffix { uint8_t OSClass; uint8_t OSIdentifier; uint8_t reserved[4]; -} __attribute__ ((packed)); +} __packed; struct impIdentSuffix { uint8_t OSClass; uint8_t OSIdentifier; uint8_t reserved[6]; -} __attribute__ ((packed)); +} __packed; struct appIdentSuffix { uint8_t impUse[8]; -} __attribute__ ((packed)); +} __packed; /* Logical Volume Integrity Descriptor (UDF 2.50 2.2.6) */ /* Implementation Use (UDF 2.50 2.2.6.4) */ @@ -92,7 +92,7 @@ struct logicalVolIntegrityDescImpUse { __le16 minUDFWriteRev; __le16 maxUDFWriteRev; uint8_t impUse[0]; -} __attribute__ ((packed)); +} __packed; /* Implementation Use Volume Descriptor (UDF 2.50 2.2.7) */ /* Implementation Use (UDF 2.50 2.2.7.2) */ @@ -104,7 +104,7 @@ struct impUseVolDescImpUse { dstring LVInfo3[36]; struct regid impIdent; uint8_t impUse[128]; -} __attribute__ ((packed)); +} __packed; struct udfPartitionMap2 { uint8_t partitionMapType; @@ -113,7 +113,7 @@ struct udfPartitionMap2 { struct regid partIdent; __le16 volSeqNum; __le16 partitionNum; -} __attribute__ ((packed)); +} __packed; /* Virtual Partition Map (UDF 2.50 2.2.8) */ struct virtualPartitionMap { @@ -124,7 +124,7 @@ struct virtualPartitionMap { __le16 volSeqNum; __le16 partitionNum; uint8_t reserved2[24]; -} __attribute__ ((packed)); +} __packed; /* Sparable Partition Map (UDF 2.50 2.2.9) */ struct sparablePartitionMap { @@ -139,7 +139,7 @@ struct sparablePartitionMap { uint8_t reserved2[1]; __le32 sizeSparingTable; __le32 locSparingTable[4]; -} __attribute__ ((packed)); +} __packed; /* Metadata Partition Map (UDF 2.4.0 2.2.10) */ struct metadataPartitionMap { @@ -156,14 +156,14 @@ struct metadataPartitionMap { __le16 alignUnitSize; uint8_t flags; uint8_t reserved2[5]; -} __attribute__ ((packed)); +} __packed; /* Virtual Allocation Table (UDF 1.5 2.2.10) */ struct virtualAllocationTable15 { __le32 VirtualSector[0]; struct regid vatIdent; __le32 previousVATICBLoc; -} __attribute__ ((packed)); +} __packed; #define ICBTAG_FILE_TYPE_VAT15 0x00U @@ -181,7 +181,7 @@ struct virtualAllocationTable20 { __le16 reserved; uint8_t impUse[0]; __le32 vatEntry[0]; -} __attribute__ ((packed)); +} __packed; #define ICBTAG_FILE_TYPE_VAT20 0xF8U @@ -189,7 +189,7 @@ struct virtualAllocationTable20 { struct sparingEntry { __le32 origLocation; __le32 mappedLocation; -} __attribute__ ((packed)); +} __packed; struct sparingTable { struct tag descTag; @@ -199,7 +199,7 @@ struct sparingTable { __le32 sequenceNum; struct sparingEntry mapEntry[0]; -} __attribute__ ((packed)); +} __packed; /* Metadata File (and Metadata Mirror File) (UDF 2.50 2.2.13.1) */ #define ICBTAG_FILE_TYPE_MAIN 0xFA @@ -210,7 +210,7 @@ struct sparingTable { struct allocDescImpUse { __le16 flags; uint8_t impUse[4]; -} __attribute__ ((packed)); +} __packed; #define AD_IU_EXT_ERASED 0x0001 @@ -222,7 +222,7 @@ struct allocDescImpUse { struct freeEaSpace { __le16 headerChecksum; uint8_t freeEASpace[0]; -} __attribute__ ((packed)); +} __packed; /* DVD Copyright Management Information (UDF 2.50 3.3.4.5.1.2) */ struct DVDCopyrightImpUse { @@ -230,14 +230,14 @@ struct DVDCopyrightImpUse { uint8_t CGMSInfo; uint8_t dataType; uint8_t protectionSystemInfo[4]; -} __attribute__ ((packed)); +} __packed; /* Application Use Extended Attribute (UDF 2.50 3.3.4.6) */ /* FreeAppEASpace (UDF 2.50 3.3.4.6.1) */ struct freeAppEASpace { __le16 headerChecksum; uint8_t freeEASpace[0]; -} __attribute__ ((packed)); +} __packed; /* UDF Defined System Stream (UDF 2.50 3.3.7) */ #define UDF_ID_UNIQUE_ID "*UDF Unique ID Mapping Data" diff --git a/fs/udf/super.c b/fs/udf/super.c index 4942549e7dc8..14b4bc1f6801 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -264,9 +264,6 @@ static void __exit exit_udf_fs(void) destroy_inodecache(); } -module_init(init_udf_fs) -module_exit(exit_udf_fs) - static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count) { struct udf_sb_info *sbi = UDF_SB(sb); @@ -1216,7 +1213,8 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index) struct udf_inode_info *vati; uint32_t pos; struct virtualAllocationTable20 *vat20; - sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits; + sector_t blocks = i_size_read(sb->s_bdev->bd_inode) >> + sb->s_blocksize_bits; udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block); if (!sbi->s_vat_inode && @@ -1806,7 +1804,7 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block, if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) && udf_fixed_to_variable(block) >= - sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits) + i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits) return -EAGAIN; bh = udf_read_tagged(sb, block, block, &ident); @@ -1868,7 +1866,7 @@ static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock, last[last_count++] = *lastblock - 152; for (i = 0; i < last_count; i++) { - if (last[i] >= sb->s_bdev->bd_inode->i_size >> + if (last[i] >= i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits) continue; ret = udf_check_anchor_block(sb, last[i], fileset); @@ -1957,7 +1955,7 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt, if (!nsr_off) { if (!silent) udf_warn(sb, "No VRS found\n"); - return 0; + return -EINVAL; } if (nsr_off == -1) udf_debug("Failed to read sector at offset %d. " @@ -1986,6 +1984,7 @@ static void udf_open_lvid(struct super_block *sb) struct buffer_head *bh = sbi->s_lvid_bh; struct logicalVolIntegrityDesc *lvid; struct logicalVolIntegrityDescImpUse *lvidiu; + struct timespec ts; if (!bh) return; @@ -1997,8 +1996,8 @@ static void udf_open_lvid(struct super_block *sb) mutex_lock(&sbi->s_alloc_mutex); lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; - udf_time_to_disk_stamp(&lvid->recordingDateAndTime, - CURRENT_TIME); + ktime_get_real_ts(&ts); + udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts); lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN); lvid->descTag.descCRC = cpu_to_le16( @@ -2019,6 +2018,7 @@ static void udf_close_lvid(struct super_block *sb) struct buffer_head *bh = sbi->s_lvid_bh; struct logicalVolIntegrityDesc *lvid; struct logicalVolIntegrityDescImpUse *lvidiu; + struct timespec ts; if (!bh) return; @@ -2030,7 +2030,8 @@ static void udf_close_lvid(struct super_block *sb) mutex_lock(&sbi->s_alloc_mutex); lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; - udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME); + ktime_get_real_ts(&ts); + udf_time_to_disk_stamp(&lvid->recordingDateAndTime, ts); if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev)) lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION); if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev)) @@ -2158,15 +2159,25 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) ret = udf_load_vrs(sb, &uopt, silent, &fileset); } else { uopt.blocksize = bdev_logical_block_size(sb->s_bdev); - ret = udf_load_vrs(sb, &uopt, silent, &fileset); - if (ret == -EAGAIN && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) { - if (!silent) - pr_notice("Rescanning with blocksize %d\n", - UDF_DEFAULT_BLOCKSIZE); - brelse(sbi->s_lvid_bh); - sbi->s_lvid_bh = NULL; - uopt.blocksize = UDF_DEFAULT_BLOCKSIZE; + while (uopt.blocksize <= 4096) { ret = udf_load_vrs(sb, &uopt, silent, &fileset); + if (ret < 0) { + if (!silent && ret != -EACCES) { + pr_notice("Scanning with blocksize %d failed\n", + uopt.blocksize); + } + brelse(sbi->s_lvid_bh); + sbi->s_lvid_bh = NULL; + /* + * EACCES is special - we want to propagate to + * upper layers that we cannot handle RW mount. + */ + if (ret == -EACCES) + break; + } else + break; + + uopt.blocksize <<= 1; } } if (ret < 0) { @@ -2497,3 +2508,9 @@ static unsigned int udf_count_free(struct super_block *sb) return accum; } + +MODULE_AUTHOR("Ben Fennema"); +MODULE_DESCRIPTION("Universal Disk Format Filesystem"); +MODULE_LICENSE("GPL"); +module_init(init_udf_fs) +module_exit(exit_udf_fs) diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c index 8d619773056b..f7dfef53f739 100644 --- a/fs/udf/symlink.c +++ b/fs/udf/symlink.c @@ -152,9 +152,39 @@ out_unmap: return err; } +static int udf_symlink_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + struct inode *inode = d_backing_inode(dentry); + struct page *page; + + generic_fillattr(inode, stat); + page = read_mapping_page(inode->i_mapping, 0, NULL); + if (IS_ERR(page)) + return PTR_ERR(page); + /* + * UDF uses non-trivial encoding of symlinks so i_size does not match + * number of characters reported by readlink(2) which apparently some + * applications expect. Also POSIX says that "The value returned in the + * st_size field shall be the length of the contents of the symbolic + * link, and shall not count a trailing null if one is present." So + * let's report the length of string returned by readlink(2) for + * st_size. + */ + stat->size = strlen(page_address(page)); + put_page(page); + + return 0; +} + /* * symlinks can't do much... */ const struct address_space_operations udf_symlink_aops = { .readpage = udf_symlink_filler, }; + +const struct inode_operations udf_symlink_inode_operations = { + .get_link = page_get_link, + .getattr = udf_symlink_getattr, +}; diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h index 263829ef1873..63b034984378 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -15,7 +15,6 @@ #include "udfend.h" #include "udf_i.h" -#define UDF_PREALLOCATE #define UDF_DEFAULT_PREALLOC_BLOCKS 8 extern __printf(3, 4) void _udf_err(struct super_block *sb, @@ -85,6 +84,7 @@ extern const struct inode_operations udf_dir_inode_operations; extern const struct file_operations udf_dir_operations; extern const struct inode_operations udf_file_inode_operations; extern const struct file_operations udf_file_operations; +extern const struct inode_operations udf_symlink_inode_operations; extern const struct address_space_operations udf_aops; extern const struct address_space_operations udf_adinicb_aops; extern const struct address_space_operations udf_symlink_aops; |