diff options
Diffstat (limited to 'fs/cifs/smb1ops.c')
| -rw-r--r-- | fs/cifs/smb1ops.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 43f3881ad3b8..fa210010358d 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -441,6 +441,54 @@ cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, return rc; } +static int +cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + FILE_ALL_INFO *data, bool *adjustTZ) +{ + int rc; + + /* could do find first instead but this returns more info */ + rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + /* + * BB optimize code so we do not make the above call when server claims + * no NT SMB support and the above call failed at least once - set flag + * in tcon or mount. + */ + if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { + rc = SMBQueryInformation(xid, tcon, full_path, data, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + *adjustTZ = true; + } + return rc; +} + +static int +cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + u64 *uniqueid, FILE_ALL_INFO *data) +{ + /* + * We can not use the IndexNumber field by default from Windows or + * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA + * CIFS spec claims that this value is unique within the scope of a + * share, and the windows docs hint that it's actually unique + * per-machine. + * + * There may be higher info levels that work but are there Windows + * server or network appliances for which IndexNumber field is not + * guaranteed unique? + */ + return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); +} + struct smb_version_operations smb1_operations = { .send_cancel = send_nt_cancel, .compare_fids = cifs_compare_fids, @@ -468,6 +516,8 @@ struct smb_version_operations smb1_operations = { .get_dfs_refer = CIFSGetDFSRefer, .qfs_tcon = cifs_qfs_tcon, .is_path_accessible = cifs_is_path_accessible, + .query_path_info = cifs_query_path_info, + .get_srv_inum = cifs_get_srv_inum, }; struct smb_version_values smb1_values = { |