diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 268 |
1 files changed, 253 insertions, 15 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 977dc0e85ccb..f5af2527fc69 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -32,6 +32,8 @@ #include "smb2pdu.h" #endif +#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ + /* * The sizes of various internal tables and strings */ @@ -128,8 +130,10 @@ struct sdesc { struct cifs_secmech { struct crypto_shash *hmacmd5; /* hmac-md5 hash function */ struct crypto_shash *md5; /* md5 hash function */ + struct crypto_shash *hmacsha256; /* hmac-sha256 hash function */ struct sdesc *sdeschmacmd5; /* ctxt to generate ntlmv2 hash, CR1 */ struct sdesc *sdescmd5; /* ctxt to generate cifs/smb signature */ + struct sdesc *sdeschmacsha256; /* ctxt to generate smb2 signature */ }; /* per smb session structure/fields */ @@ -158,9 +162,24 @@ struct cifs_cred { ***************************************************************** */ +/* + * A smb_rqst represents a complete request to be issued to a server. It's + * formed by a kvec array, followed by an array of pages. Page data is assumed + * to start at the beginning of the first page. + */ +struct smb_rqst { + struct kvec *rq_iov; /* array of kvecs */ + unsigned int rq_nvec; /* number of kvecs in array */ + struct page **rq_pages; /* pointer to array of page ptrs */ + unsigned int rq_npages; /* number pages in array */ + unsigned int rq_pagesz; /* page size to use */ + unsigned int rq_tailsz; /* length of last page */ +}; + enum smb_version { Smb_1 = 1, Smb_21, + Smb_30, }; struct mid_q_entry; @@ -171,17 +190,23 @@ struct cifs_tcon; struct dfs_info3_param; struct cifs_fattr; struct smb_vol; +struct cifs_fid; +struct cifs_readdata; +struct cifs_writedata; +struct cifs_io_parms; +struct cifs_search_info; +struct cifsInodeInfo; struct smb_version_operations { int (*send_cancel)(struct TCP_Server_Info *, void *, struct mid_q_entry *); bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *); /* setup request: allocate mid, sign message */ - int (*setup_request)(struct cifs_ses *, struct kvec *, unsigned int, - struct mid_q_entry **); + struct mid_q_entry *(*setup_request)(struct cifs_ses *, + struct smb_rqst *); /* setup async request: allocate mid, sign message */ - int (*setup_async_request)(struct TCP_Server_Info *, struct kvec *, - unsigned int, struct mid_q_entry **); + struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *, + struct smb_rqst *); /* check response: verify signature, map error */ int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *, bool); @@ -212,6 +237,10 @@ struct smb_version_operations { bool (*need_neg)(struct TCP_Server_Info *); /* negotiate to the server */ int (*negotiate)(const unsigned int, struct cifs_ses *); + /* set negotiated write size */ + unsigned int (*negotiate_wsize)(struct cifs_tcon *, struct smb_vol *); + /* set negotiated read size */ + unsigned int (*negotiate_rsize)(struct cifs_tcon *, struct smb_vol *); /* setup smb sessionn */ int (*sess_setup)(const unsigned int, struct cifs_ses *, const struct nls_table *); @@ -235,10 +264,22 @@ struct smb_version_operations { int (*query_path_info)(const unsigned int, struct cifs_tcon *, struct cifs_sb_info *, const char *, FILE_ALL_INFO *, bool *); + /* query file data from the server */ + int (*query_file_info)(const unsigned int, struct cifs_tcon *, + struct cifs_fid *, FILE_ALL_INFO *); /* get server index number */ int (*get_srv_inum)(const unsigned int, struct cifs_tcon *, struct cifs_sb_info *, const char *, u64 *uniqueid, FILE_ALL_INFO *); + /* set size by path */ + int (*set_path_size)(const unsigned int, struct cifs_tcon *, + const char *, __u64, struct cifs_sb_info *, bool); + /* set size by file handle */ + int (*set_file_size)(const unsigned int, struct cifs_tcon *, + struct cifsFileInfo *, __u64, bool); + /* set attributes */ + int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *, + const unsigned int); /* build a full path to the root of the mount */ char * (*build_path_to_root)(struct smb_vol *, struct cifs_sb_info *, struct cifs_tcon *); @@ -256,10 +297,84 @@ struct smb_version_operations { /* remove directory */ int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *, struct cifs_sb_info *); + /* unlink file */ + int (*unlink)(const unsigned int, struct cifs_tcon *, const char *, + struct cifs_sb_info *); + /* open, rename and delete file */ + int (*rename_pending_delete)(const char *, struct dentry *, + const unsigned int); + /* send rename request */ + int (*rename)(const unsigned int, struct cifs_tcon *, const char *, + const char *, struct cifs_sb_info *); + /* send create hardlink request */ + int (*create_hardlink)(const unsigned int, struct cifs_tcon *, + const char *, const char *, + struct cifs_sb_info *); + /* open a file for non-posix mounts */ + int (*open)(const unsigned int, struct cifs_tcon *, const char *, int, + int, int, struct cifs_fid *, __u32 *, FILE_ALL_INFO *, + struct cifs_sb_info *); + /* set fid protocol-specific info */ + void (*set_fid)(struct cifsFileInfo *, struct cifs_fid *, __u32); + /* close a file */ + void (*close)(const unsigned int, struct cifs_tcon *, + struct cifs_fid *); + /* send a flush request to the server */ + int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *); + /* async read from the server */ + int (*async_readv)(struct cifs_readdata *); + /* async write to the server */ + int (*async_writev)(struct cifs_writedata *); + /* sync read from the server */ + int (*sync_read)(const unsigned int, struct cifsFileInfo *, + struct cifs_io_parms *, unsigned int *, char **, + int *); + /* sync write to the server */ + int (*sync_write)(const unsigned int, struct cifsFileInfo *, + struct cifs_io_parms *, unsigned int *, struct kvec *, + unsigned long); + /* open dir, start readdir */ + int (*query_dir_first)(const unsigned int, struct cifs_tcon *, + const char *, struct cifs_sb_info *, + struct cifs_fid *, __u16, + struct cifs_search_info *); + /* continue readdir */ + int (*query_dir_next)(const unsigned int, struct cifs_tcon *, + struct cifs_fid *, + __u16, struct cifs_search_info *srch_inf); + /* close dir */ + int (*close_dir)(const unsigned int, struct cifs_tcon *, + struct cifs_fid *); + /* calculate a size of SMB message */ + unsigned int (*calc_smb_size)(void *); + /* check for STATUS_PENDING and process it in a positive case */ + bool (*is_status_pending)(char *, struct TCP_Server_Info *, int); + /* send oplock break response */ + int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *, + struct cifsInodeInfo *); + /* query remote filesystem */ + int (*queryfs)(const unsigned int, struct cifs_tcon *, + struct kstatfs *); + /* send mandatory brlock to the server */ + int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64, + __u64, __u32, int, int, bool); + /* unlock range of mandatory locks */ + int (*mand_unlock_range)(struct cifsFileInfo *, struct file_lock *, + const unsigned int); + /* push brlocks from the cache to the server */ + int (*push_mand_locks)(struct cifsFileInfo *); + /* get lease key of the inode */ + void (*get_lease_key)(struct inode *, struct cifs_fid *fid); + /* set lease key of the inode */ + void (*set_lease_key)(struct inode *, struct cifs_fid *fid); + /* generate new lease key */ + void (*new_lease_key)(struct cifs_fid *fid); }; struct smb_version_values { char *version_string; + __u16 protocol_id; + __u32 req_capabilities; __u32 large_lock_type; __u32 exclusive_lock_type; __u32 shared_lock_type; @@ -496,6 +611,51 @@ get_next_mid(struct TCP_Server_Info *server) } /* + * When the server supports very large reads and writes via POSIX extensions, + * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not + * including the RFC1001 length. + * + * Note that this might make for "interesting" allocation problems during + * writeback however as we have to allocate an array of pointers for the + * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. + * + * For reads, there is a similar problem as we need to allocate an array + * of kvecs to handle the receive, though that should only need to be done + * once. + */ +#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) +#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) + +/* + * When the server doesn't allow large posix writes, only allow a rsize/wsize + * of 2^17-1 minus the size of the call header. That allows for a read or + * write up to the maximum size described by RFC1002. + */ +#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) +#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) + +/* + * The default wsize is 1M. find_get_pages seems to return a maximum of 256 + * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill + * a single wsize request with a single call. + */ +#define CIFS_DEFAULT_IOSIZE (1024 * 1024) + +/* + * Windows only supports a max of 60kb reads and 65535 byte writes. Default to + * those values when posix extensions aren't in force. In actuality here, we + * use 65536 to allow for a write that is a multiple of 4k. Most servers seem + * to be ok with the extra byte even though Windows doesn't send writes that + * are that large. + * + * Citation: + * + * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx + */ +#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) +#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) + +/* * Macros to allow the TCP_Server_Info->net field and related code to drop out * when CONFIG_NET_NS isn't set. */ @@ -559,6 +719,7 @@ struct cifs_ses { __u16 session_flags; #endif /* CONFIG_CIFS_SMB2 */ }; + /* no more than one of the following three session flags may be set */ #define CIFS_SES_NT4 1 #define CIFS_SES_OS2 2 @@ -665,6 +826,7 @@ struct cifs_tcon { u64 resource_id; /* server resource id */ struct fscache_cookie *fscache; /* cookie for share */ #endif + struct list_head pending_opens; /* list of incomplete opens */ /* BB add field for back pointer to sb struct(s)? */ }; @@ -707,6 +869,15 @@ cifs_get_tlink(struct tcon_link *tlink) /* This function is always expected to succeed */ extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb); +#define CIFS_OPLOCK_NO_CHANGE 0xfe + +struct cifs_pending_open { + struct list_head olist; + struct tcon_link *tlink; + __u8 lease_key[16]; + __u32 oplock; +}; + /* * This info hangs off the cifsFileInfo structure, pointed to by llist. * This is used to track byte stream locks on the file @@ -740,16 +911,29 @@ struct cifs_search_info { bool smallBuf:1; /* so we know which buf_release function to call */ }; +struct cifs_fid { + __u16 netfid; +#ifdef CONFIG_CIFS_SMB2 + __u64 persistent_fid; /* persist file id for smb2 */ + __u64 volatile_fid; /* volatile file id for smb2 */ + __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */ +#endif + struct cifs_pending_open *pending_open; +}; + +struct cifs_fid_locks { + struct list_head llist; + struct cifsFileInfo *cfile; /* fid that owns locks */ + struct list_head locks; /* locks held by fid above */ +}; + struct cifsFileInfo { struct list_head tlist; /* pointer to next fid owned by tcon */ struct list_head flist; /* next fid (file instance) for this inode */ - struct list_head llist; /* - * brlocks held by this fid, protected by - * lock_mutex from cifsInodeInfo structure - */ + struct cifs_fid_locks *llist; /* brlocks held by this fid */ unsigned int uid; /* allows finding which FileInfo structure */ __u32 pid; /* process id who opened file */ - __u16 netfid; /* file id from remote */ + struct cifs_fid fid; /* file id from remote */ /* BB add lock scope info here if needed */ ; /* lock scope id (0 if none) */ struct dentry *dentry; @@ -765,12 +949,60 @@ struct cifsFileInfo { struct cifs_io_parms { __u16 netfid; +#ifdef CONFIG_CIFS_SMB2 + __u64 persistent_fid; /* persist file id for smb2 */ + __u64 volatile_fid; /* volatile file id for smb2 */ +#endif __u32 pid; __u64 offset; unsigned int length; struct cifs_tcon *tcon; }; +struct cifs_readdata; + +/* asynchronous read support */ +struct cifs_readdata { + struct kref refcount; + struct list_head list; + struct completion done; + struct cifsFileInfo *cfile; + struct address_space *mapping; + __u64 offset; + unsigned int bytes; + pid_t pid; + int result; + struct work_struct work; + int (*read_into_pages)(struct TCP_Server_Info *server, + struct cifs_readdata *rdata, + unsigned int len); + struct kvec iov; + unsigned int pagesz; + unsigned int tailsz; + unsigned int nr_pages; + struct page *pages[]; +}; + +struct cifs_writedata; + +/* asynchronous write support */ +struct cifs_writedata { + struct kref refcount; + struct list_head list; + struct completion done; + enum writeback_sync_modes sync_mode; + struct work_struct work; + struct cifsFileInfo *cfile; + __u64 offset; + pid_t pid; + unsigned int bytes; + int result; + unsigned int pagesz; + unsigned int tailsz; + unsigned int nr_pages; + struct page *pages[1]; +}; + /* * Take a reference on the file private data. Must be called with * cifs_file_list_lock held. @@ -790,11 +1022,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file); struct cifsInodeInfo { bool can_cache_brlcks; - struct mutex lock_mutex; /* - * protect the field above and llist - * from every cifsFileInfo structure - * from openFileList - */ + struct list_head llist; /* locks helb by this inode */ + struct rw_semaphore lock_sem; /* protect the fields above */ /* BB add in lists for dirty pages i.e. write caching info for oplock */ struct list_head openFileList; __u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */ @@ -806,6 +1035,9 @@ struct cifsInodeInfo { u64 server_eof; /* current file size on server -- protected by i_lock */ u64 uniqueid; /* server inode number */ u64 createtime; /* creation time on server */ +#ifdef CONFIG_CIFS_SMB2 + __u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for this inode */ +#endif #ifdef CONFIG_CIFS_FSCACHE struct fscache_cookie *fscache; #endif @@ -1130,7 +1362,7 @@ require use of the stronger protocol */ #define CIFSSEC_MUST_SEAL 0x40040 /* not supported yet */ #define CIFSSEC_MUST_NTLMSSP 0x80080 /* raw ntlmssp with ntlmv2 */ -#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2) +#define CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_NTLMSSP) #define CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2) #define CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP) /* @@ -1267,7 +1499,13 @@ extern mempool_t *cifs_mid_poolp; #define SMB1_VERSION_STRING "1.0" extern struct smb_version_operations smb1_operations; extern struct smb_version_values smb1_values; +#define SMB20_VERSION_STRING "2.0" +/*extern struct smb_version_operations smb20_operations; */ /* not needed yet */ +extern struct smb_version_values smb20_values; #define SMB21_VERSION_STRING "2.1" extern struct smb_version_operations smb21_operations; extern struct smb_version_values smb21_values; +#define SMB30_VERSION_STRING "3.0" +/*extern struct smb_version_operations smb30_operations; */ /* not needed yet */ +extern struct smb_version_values smb30_values; #endif /* _CIFS_GLOB_H */ |