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| author | Pavel Shilovsky <pshilovsky@samba.org> | 2013-08-14 19:25:22 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2013-09-08 14:27:41 -0500 |
| commit | d244bf2dfbebfded05f494ffd53659fa7b1e32c1 (patch) | |
| tree | 7dde97c81405cf271463025cb7f42f1b52e282bb /fs/cifs/smb1ops.c | |
| parent | b42bf88828cde60772dc08201d0a4f1a0663d7bc (diff) | |
| download | linux-d244bf2dfbebfded05f494ffd53659fa7b1e32c1.tar.gz | |
CIFS: Implement follow_link for nounix CIFS mounts
by using a query reparse ioctl request. Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/smb1ops.c')
| -rw-r--r-- | fs/cifs/smb1ops.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 60943978aec3..8fe19c973ee4 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -881,6 +881,37 @@ cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, (__u8)type, wait, 0); } +static int +cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, + const char *full_path, char **target_path, + struct cifs_sb_info *cifs_sb) +{ + int rc; + int oplock = 0; + __u16 netfid; + + cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); + + rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, + FILE_READ_ATTRIBUTES, OPEN_REPARSE_POINT, &netfid, + &oplock, NULL, cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (rc) + return rc; + + rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path, + cifs_sb->local_nls); + if (rc) { + CIFSSMBClose(xid, tcon, netfid); + return rc; + } + + convert_delimiter(*target_path, '/'); + CIFSSMBClose(xid, tcon, netfid); + cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); + return rc; +} + struct smb_version_operations smb1_operations = { .send_cancel = send_nt_cancel, .compare_fids = cifs_compare_fids, @@ -927,6 +958,7 @@ struct smb_version_operations smb1_operations = { .rename_pending_delete = cifs_rename_pending_delete, .rename = CIFSSMBRename, .create_hardlink = CIFSCreateHardLink, + .query_symlink = cifs_query_symlink, .open = cifs_open_file, .set_fid = cifs_set_fid, .close = cifs_close_file, |