diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-24 20:31:12 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-24 20:31:12 (GMT) |
| commit | 772950ed21c36f4157ff34e7d10fb61975f64558 (patch) | |
| tree | 2d8fbac099a5064d20342ba7cb6e8e9539bf6fb5 /fs/cifs/inode.c | |
| parent | 587198ba5206cdf0d30855f7361af950a4172cd6 (diff) | |
| parent | 01b9b0b28626db4a47d7f48744d70abca9914ef1 (diff) | |
| download | linux-772950ed21c36f4157ff34e7d10fb61975f64558.tar.xz | |
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull SMB3 fixes from Steve French:
"A collection of CIFS/SMB3 fixes.
It includes a couple bug fixes, a few for improved debugging of
cifs.ko and some improvements to the way cifs does key generation.
I do have some additional bug fixes I expect in the next week or two
(to address a problem found by xfstest, and some fixes for SMB3.11
dialect, and a couple patches that just came in yesterday that I am
reviewing)"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
cifs_dbg() outputs an uninitialized buffer in cifs_readdir()
cifs: fix race between call_async() and reconnect()
Prepare for encryption support (first part). Add decryption and encryption key generation. Thanks to Metze for helping with this.
cifs: Allow using O_DIRECT with cache=loose
cifs: Make echo interval tunable
cifs: Check uniqueid for SMB2+ and return -ESTALE if necessary
Print IP address of unresponsive server
cifs: Ratelimit kernel log messages
Diffstat (limited to 'fs/cifs/inode.c')
| -rw-r--r-- | fs/cifs/inode.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index a329f5b..aeb26db 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -814,8 +814,21 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, } } else fattr.cf_uniqueid = iunique(sb, ROOT_I); - } else - fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid; + } else { + if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && + validinum == false && server->ops->get_srv_inum) { + /* + * Pass a NULL tcon to ensure we don't make a round + * trip to the server. This only works for SMB2+. + */ + tmprc = server->ops->get_srv_inum(xid, + NULL, cifs_sb, full_path, + &fattr.cf_uniqueid, data); + if (tmprc) + fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid; + } else + fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid; + } /* query for SFU type info if supported and needed */ if (fattr.cf_cifsattrs & ATTR_SYSTEM && @@ -856,6 +869,13 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, } else { /* we already have inode, update it */ + /* if uniqueid is different, return error */ + if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM && + CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) { + rc = -ESTALE; + goto cgii_exit; + } + /* if filetype is different, return error */ if (unlikely(((*inode)->i_mode & S_IFMT) != (fattr.cf_mode & S_IFMT))) { |