[CIFS] UID/GID override on CIFS mounts to Samba

When CIFS Unix Extensions are negotiated we get the Unix uid and gid
owners of the file from the server (on the Unix Query Path Info
levels), but if the server's uids don't match the client uid's users
were having to disable the Unix Extensions (which turned off features
they still wanted).   The changeset patch allows users to override uid
and/or gid for file/directory owner with a default uid and/or gid
specified at mount (as is often done when mounting from Linux cifs
client to Windows server).  This changeset also displays the uid
and gid used by default in /proc/mounts (if applicable).

Also cleans up code by adding some of the missing spaces after
"if" keywords per-kernel style guidelines (as suggested by Randy Dunlap
when he reviewed the patch).
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/CHANGES

@@ -2,7 +2,11 @@ Version 1.49
 ------------
 IPv6 support.  Enable ipv6 addresses to be passed on mount (put the ipv6
 address after the "ip=" mount option, at least until mount.cifs is fixed to
-handle DNS host to ipv6 name translation).
+handle DNS host to ipv6 name translation).  Accept override of uid or gid
+on mount even when Unix Extensions are negotiated (it used to be ignored
+when Unix Extensions were ignored).  This allows users to override the
+default uid and gid for files when they are certain that the uids or
+gids on the server do not match those of the client.
 
 Version 1.48
 ------------

fs/cifs/README

@@ -257,13 +257,19 @@ A partial list of the supported mount options follows:
 		mount.	
   domain	Set the SMB/CIFS workgroup name prepended to the
 		username during CIFS session establishment
-  uid		If CIFS Unix extensions are not supported by the server
-		this overrides the default uid for inodes. For mounts to
-		servers which do support the CIFS Unix extensions, such
-		as a properly configured Samba server, the server provides
-		the uid, gid and mode.  For servers which do not support
-		the Unix extensions, the default uid (and gid) returned on
-		lookup of existing files is the uid (gid) of the person
+  uid		Set the default uid for inodes. For mounts to servers
+		which do support the CIFS Unix extensions, such as a
+		properly configured Samba server, the server provides
+		the uid, gid and mode so this parameter should  not be
+		specified unless the server and clients uid and gid
+		numbering differ.  If the server and client are in the
+		same domain (e.g. running winbind or nss_ldap) and
+		the server supports the Unix Extensions then the uid
+		and gid can be retrieved from the server (and uid
+		and gid would not have to be specifed on the mount. 
+		For servers which do not support the CIFS Unix
+		extensions, the default uid (and gid) returned on lookup
+		of existing files will be the uid (gid) of the person
 		who executed the mount (root, except when mount.cifs
 		is configured setuid for user mounts) unless the "uid=" 
 		(gid) mount option is specified.  For the uid (gid) of newly
@@ -281,8 +287,7 @@ A partial list of the supported mount options follows:
 		the client.  Note that the mount.cifs helper must be
 		at version 1.10 or higher to support specifying the uid
 		(or gid) in non-numberic form.
-  gid		If CIFS Unix extensions are not supported by the server
-		this overrides the default gid for inodes.
+  gid		Set the default gid for inodes (similar to above).
   file_mode     If CIFS Unix extensions are not supported by the server
 		this overrides the default mode for file inodes.
   dir_mode      If CIFS Unix extensions are not supported by the server 

fs/cifs/TODO

@@ -80,7 +80,7 @@ need to add ability to set time to server (utimes command)
 
 u) DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for this too)
 
-v) mount check for unmatched uids - and uid override
+v) mount check for unmatched uids
 
 w) Add mount option for Linux extension disable per mount, and partial
 disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?)

fs/cifs/cifs_fs_sb.h

@@ -22,12 +22,14 @@
 #define CIFS_MOUNT_SET_UID      2 /* set current->euid in create etc. */
 #define CIFS_MOUNT_SERVER_INUM  4 /* inode numbers from uniqueid from server */
 #define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */
-#define CIFS_MOUNT_NO_XATTR  0x10 /* if set - disable xattr support */
-#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
-#define CIFS_MOUNT_POSIX_PATHS	0x40 /* Negotiate posix pathnames if possible. */
-#define CIFS_MOUNT_UNX_EMUL	0x80 /* Network compat with SFUnix emulation */
-#define CIFS_MOUNT_NO_BRL	0x100 /* No sending byte range locks to srv */
-#define CIFS_MOUNT_CIFS_ACL	0x200 /* send ACL requests to non-POSIX srv */
+#define CIFS_MOUNT_NO_XATTR     0x10  /* if set - disable xattr support       */
+#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames   */
+#define CIFS_MOUNT_POSIX_PATHS  0x40  /* Negotiate posix pathnames if possible*/
+#define CIFS_MOUNT_UNX_EMUL     0x80  /* Network compat with SFUnix emulation */
+#define CIFS_MOUNT_NO_BRL       0x100 /* No sending byte range locks to srv   */
+#define CIFS_MOUNT_CIFS_ACL     0x200 /* send ACL requests to non-POSIX srv   */
+#define CIFS_MOUNT_OVERR_UID    0x400 /* override uid returned from server    */
+#define CIFS_MOUNT_OVERR_GID    0x800 /* override gid returned from server    */
 
 struct cifs_sb_info {
 	struct cifsTconInfo *tcon;	/* primary mount */

fs/cifs/cifsfs.c

@@ -100,7 +100,7 @@ cifs_read_super(struct super_block *sb, void *data,
 	sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
 	sb->s_fs_info = kzalloc(sizeof(struct cifs_sb_info),GFP_KERNEL);
 	cifs_sb = CIFS_SB(sb);
-	if(cifs_sb == NULL)
+	if (cifs_sb == NULL)
 		return -ENOMEM;
 
 	rc = cifs_mount(sb, cifs_sb, data, devname);
@@ -115,10 +115,10 @@ cifs_read_super(struct super_block *sb, void *data,
 	sb->s_magic = CIFS_MAGIC_NUMBER;
 	sb->s_op = &cifs_super_ops;
 #ifdef CONFIG_CIFS_EXPERIMENTAL
-	if(experimEnabled != 0)
+	if (experimEnabled != 0)
 		sb->s_export_op = &cifs_export_ops;
 #endif /* EXPERIMENTAL */	
-/*	if(cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
+/*	if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
 	    sb->s_blocksize = cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
 #ifdef CONFIG_CIFS_QUOTA
 	sb->s_qcop = &cifs_quotactl_ops;
@@ -147,8 +147,8 @@ cifs_read_super(struct super_block *sb, void *data,
 		iput(inode);
 
 out_mount_failed:
-	if(cifs_sb) {
-		if(cifs_sb->local_nls)
+	if (cifs_sb) {
+		if (cifs_sb->local_nls)
 			unload_nls(cifs_sb->local_nls);	
 		kfree(cifs_sb);
 	}
@@ -163,7 +163,7 @@ cifs_put_super(struct super_block *sb)
 
 	cFYI(1, ("In cifs_put_super"));
 	cifs_sb = CIFS_SB(sb);
-	if(cifs_sb == NULL) {
+	if (cifs_sb == NULL) {
 		cFYI(1,("Empty cifs superblock info passed to unmount"));
 		return;
 	}
@@ -208,14 +208,14 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
 
     /* Only need to call the old QFSInfo if failed
     on newer one */
-    if(rc)
-	if(pTcon->ses->capabilities & CAP_NT_SMBS)
+    if (rc)
+	if (pTcon->ses->capabilities & CAP_NT_SMBS)
 		rc = CIFSSMBQFSInfo(xid, pTcon, buf); /* not supported by OS2 */
 
 	/* Some old Windows servers also do not support level 103, retry with
 	   older level one if old server failed the previous call or we
 	   bypassed it because we detected that this was an older LANMAN sess */
-	if(rc)
+	if (rc)
 		rc = SMBOldQFSInfo(xid, pTcon, buf);
 	/*     
 	   int f_type;
@@ -301,11 +301,19 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m)
 				if (cifs_sb->tcon->ses->userName)
 					seq_printf(s, ",username=%s",
 					   cifs_sb->tcon->ses->userName);
-				if(cifs_sb->tcon->ses->domainName)
+				if (cifs_sb->tcon->ses->domainName)
 					seq_printf(s, ",domain=%s",
 					   cifs_sb->tcon->ses->domainName);
 			}
 		}
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
+			seq_printf(s, ",posixpaths");
+		if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) ||
+		   !(cifs_sb->tcon->ses->capabilities & CAP_UNIX))
+			seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
+		if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) ||
+		   !(cifs_sb->tcon->ses->capabilities & CAP_UNIX))
+			seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
 		seq_printf(s, ",rsize=%d",cifs_sb->rsize);
 		seq_printf(s, ",wsize=%d",cifs_sb->wsize);
 	}
@@ -321,14 +329,14 @@ int cifs_xquota_set(struct super_block * sb, int quota_type, qid_t qid,
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifsTconInfo *pTcon;
 	
-	if(cifs_sb)
+	if (cifs_sb)
 		pTcon = cifs_sb->tcon;
 	else
 		return -EIO;
 
 
 	xid = GetXid();
-	if(pTcon) {
+	if (pTcon) {
 		cFYI(1,("set type: 0x%x id: %d",quota_type,qid));		
 	} else {
 		return -EIO;
@@ -346,13 +354,13 @@ int cifs_xquota_get(struct super_block * sb, int quota_type, qid_t qid,
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifsTconInfo *pTcon;
 
-	if(cifs_sb)
+	if (cifs_sb)
 		pTcon = cifs_sb->tcon;
 	else
 		return -EIO;
 
 	xid = GetXid();
-	if(pTcon) {
+	if (pTcon) {
                 cFYI(1,("set type: 0x%x id: %d",quota_type,qid));
 	} else {
 		rc = -EIO;
@@ -369,13 +377,13 @@ int cifs_xstate_set(struct super_block * sb, unsigned int flags, int operation)
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifsTconInfo *pTcon;
 
-	if(cifs_sb)
+	if (cifs_sb)
 		pTcon = cifs_sb->tcon;
 	else
 		return -EIO;
 
 	xid = GetXid();
-	if(pTcon) {
+	if (pTcon) {
                 cFYI(1,("flags: 0x%x operation: 0x%x",flags,operation));
 	} else {
 		rc = -EIO;
@@ -392,13 +400,13 @@ int cifs_xstate_get(struct super_block * sb, struct fs_quota_stat *qstats)
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	struct cifsTconInfo *pTcon;
 
-	if(cifs_sb) {
+	if (cifs_sb) {
 		pTcon = cifs_sb->tcon;
 	} else {
 		return -EIO;
 	}
 	xid = GetXid();
-	if(pTcon) {
+	if (pTcon) {
 		cFYI(1,("pqstats %p",qstats));		
 	} else {
 		rc = -EIO;
@@ -424,11 +432,11 @@ static void cifs_umount_begin(struct vfsmount * vfsmnt, int flags)
 	if (!(flags & MNT_FORCE))
 		return;
 	cifs_sb = CIFS_SB(vfsmnt->mnt_sb);
-	if(cifs_sb == NULL)
+	if (cifs_sb == NULL)
 		return;
 
 	tcon = cifs_sb->tcon;
-	if(tcon == NULL)
+	if (tcon == NULL)
 		return;
 	down(&tcon->tconSem);
 	if (atomic_read(&tcon->useCount) == 1)
@@ -437,7 +445,7 @@ static void cifs_umount_begin(struct vfsmount * vfsmnt, int flags)
 
 	/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
 	/* cancel_notify_requests(tcon); */
-	if(tcon->ses && tcon->ses->server)
+	if (tcon->ses && tcon->ses->server)
 	{
 		cFYI(1,("wake up tasks now - umount begin not complete"));
 		wake_up_all(&tcon->ses->server->request_q);
@@ -723,7 +731,7 @@ cifs_destroy_inodecache(void)
 static int
 cifs_init_request_bufs(void)
 {
-	if(CIFSMaxBufSize < 8192) {
+	if (CIFSMaxBufSize < 8192) {
 	/* Buffer size can not be smaller than 2 * PATH_MAX since maximum
 	Unicode path name has to fit in any SMB/CIFS path based frames */
 		CIFSMaxBufSize = 8192;
@@ -740,7 +748,7 @@ cifs_init_request_bufs(void)
 	if (cifs_req_cachep == NULL)
 		return -ENOMEM;
 
-	if(cifs_min_rcv < 1)
+	if (cifs_min_rcv < 1)
 		cifs_min_rcv = 1;
 	else if (cifs_min_rcv > 64) {
 		cifs_min_rcv = 64;
@@ -750,7 +758,7 @@ cifs_init_request_bufs(void)
 	cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv,
 						  cifs_req_cachep);
 
-	if(cifs_req_poolp == NULL) {
+	if (cifs_req_poolp == NULL) {
 		kmem_cache_destroy(cifs_req_cachep);
 		return -ENOMEM;
 	}
@@ -771,7 +779,7 @@ cifs_init_request_bufs(void)
 		return -ENOMEM;              
 	}
 
-	if(cifs_min_small < 2)
+	if (cifs_min_small < 2)
 		cifs_min_small = 2;
 	else if (cifs_min_small > 256) {
 		cifs_min_small = 256;
@@ -781,7 +789,7 @@ cifs_init_request_bufs(void)
 	cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small,
 						     cifs_sm_req_cachep);
 
-	if(cifs_sm_req_poolp == NULL) {
+	if (cifs_sm_req_poolp == NULL) {
 		mempool_destroy(cifs_req_poolp);
 		kmem_cache_destroy(cifs_req_cachep);
 		kmem_cache_destroy(cifs_sm_req_cachep);
@@ -811,7 +819,7 @@ cifs_init_mids(void)
 
 	/* 3 is a reasonable minimum number of simultaneous operations */
 	cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep);
-	if(cifs_mid_poolp == NULL) {
+	if (cifs_mid_poolp == NULL) {
 		kmem_cache_destroy(cifs_mid_cachep);
 		return -ENOMEM;
 	}
@@ -849,14 +857,14 @@ static int cifs_oplock_thread(void * dummyarg)
 			continue;
 		
 		spin_lock(&GlobalMid_Lock);
-		if(list_empty(&GlobalOplock_Q)) {
+		if (list_empty(&GlobalOplock_Q)) {
 			spin_unlock(&GlobalMid_Lock);
 			set_current_state(TASK_INTERRUPTIBLE);
 			schedule_timeout(39*HZ);
 		} else {
 			oplock_item = list_entry(GlobalOplock_Q.next, 
 				struct oplock_q_entry, qhead);
-			if(oplock_item) {
+			if (oplock_item) {
 				cFYI(1,("found oplock item to write out")); 
 				pTcon = oplock_item->tcon;
 				inode = oplock_item->pinode;
@@ -870,7 +878,7 @@ static int cifs_oplock_thread(void * dummyarg)
 				/* mutex_lock(&inode->i_mutex);*/
 				if (S_ISREG(inode->i_mode)) {
 					rc = filemap_fdatawrite(inode->i_mapping);
-					if(CIFS_I(inode)->clientCanCacheRead == 0) {
+					if (CIFS_I(inode)->clientCanCacheRead == 0) {
 						filemap_fdatawait(inode->i_mapping);
 						invalidate_remote_inode(inode);
 					}
@@ -887,7 +895,7 @@ static int cifs_oplock_thread(void * dummyarg)
 				not bother sending an oplock release if session 
 				to server still is disconnected since oplock 
 				already released by the server in that case */
-				if(pTcon->tidStatus != CifsNeedReconnect) {
+				if (pTcon->tidStatus != CifsNeedReconnect) {
 				    rc = CIFSSMBLock(0, pTcon, netfid,
 					    0 /* len */ , 0 /* offset */, 0, 
 					    0, LOCKING_ANDX_OPLOCK_RELEASE,
@@ -921,7 +929,7 @@ static int cifs_dnotify_thread(void * dummyarg)
 		list_for_each(tmp, &GlobalSMBSessionList) {
 			ses = list_entry(tmp, struct cifsSesInfo, 
 				cifsSessionList);
-			if(ses && ses->server && 
+			if (ses && ses->server && 
 			     atomic_read(&ses->server->inFlight))
 				wake_up_all(&ses->server->response_q);
 		}
@@ -970,10 +978,10 @@ init_cifs(void)
 	rwlock_init(&GlobalSMBSeslock);
 	spin_lock_init(&GlobalMid_Lock);
 
-	if(cifs_max_pending < 2) {
+	if (cifs_max_pending < 2) {
 		cifs_max_pending = 2;
 		cFYI(1,("cifs_max_pending set to min of 2"));
-	} else if(cifs_max_pending > 256) {
+	} else if (cifs_max_pending > 256) {
 		cifs_max_pending = 256;
 		cFYI(1,("cifs_max_pending set to max of 256"));
 	}

fs/cifs/inode.c

@@ -90,7 +90,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
 				(*pinode)->i_ino =
 					(unsigned long)findData.UniqueId;
 			} /* note ino incremented to unique num in new_inode */
-			if(sb->s_flags & MS_NOATIME)
+			if (sb->s_flags & MS_NOATIME)
 				(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
 				
 			insert_inode_hash(*pinode);
@@ -139,8 +139,17 @@ int cifs_get_inode_info_unix(struct inode **pinode,
 			inode->i_mode |= S_IFREG;
 			cFYI(1,("unknown type %d",type));
 		}
-		inode->i_uid = le64_to_cpu(findData.Uid);
-		inode->i_gid = le64_to_cpu(findData.Gid);
+		
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
+			inode->i_uid = cifs_sb->mnt_uid;
+		else
+			inode->i_uid = le64_to_cpu(findData.Uid);
+
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
+			inode->i_gid = cifs_sb->mnt_gid;
+		else
+			inode->i_gid = le64_to_cpu(findData.Gid);
+			
 		inode->i_nlink = le64_to_cpu(findData.Nlinks);
 
 		spin_lock(&inode->i_lock);
@@ -178,13 +187,13 @@ int cifs_get_inode_info_unix(struct inode **pinode,
 						&cifs_file_direct_nobrl_ops;
 				else
 					inode->i_fop = &cifs_file_direct_ops;
-			} else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+			} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
 				inode->i_fop = &cifs_file_nobrl_ops;
 			else /* not direct, send byte range locks */ 
 				inode->i_fop = &cifs_file_ops;
 
 			/* check if server can support readpages */
-			if(pTcon->ses->server->maxBuf < 
+			if (pTcon->ses->server->maxBuf < 
 			    PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
 				inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
 			else
@@ -220,7 +229,7 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 
 	pbuf = buf;
 
-	if(size == 0) {
+	if (size == 0) {
 		inode->i_mode |= S_IFIFO;
 		return 0;
 	} else if (size < 8) {
@@ -239,11 +248,11 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 			         netfid,
 				 24 /* length */, 0 /* offset */,
 				 &bytes_read, &pbuf, &buf_type);
-		if((rc == 0) && (bytes_read >= 8)) {
-			if(memcmp("IntxBLK", pbuf, 8) == 0) {
+		if ((rc == 0) && (bytes_read >= 8)) {
+			if (memcmp("IntxBLK", pbuf, 8) == 0) {
 				cFYI(1,("Block device"));
 				inode->i_mode |= S_IFBLK;
-				if(bytes_read == 24) {
+				if (bytes_read == 24) {
 					/* we have enough to decode dev num */
 					__u64 mjr; /* major */
 					__u64 mnr; /* minor */
@@ -251,10 +260,10 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 					mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
 					inode->i_rdev = MKDEV(mjr, mnr);
 				}
-			} else if(memcmp("IntxCHR", pbuf, 8) == 0) {
+			} else if (memcmp("IntxCHR", pbuf, 8) == 0) {
 				cFYI(1,("Char device"));
 				inode->i_mode |= S_IFCHR;
-				if(bytes_read == 24) {
+				if (bytes_read == 24) {
 					/* we have enough to decode dev num */
 					__u64 mjr; /* major */
 					__u64 mnr; /* minor */
@@ -262,7 +271,7 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
 					mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
 					inode->i_rdev = MKDEV(mjr, mnr);
                                 }
-			} else if(memcmp("IntxLNK", pbuf, 7) == 0) {
+			} else if (memcmp("IntxLNK", pbuf, 7) == 0) {
 				cFYI(1,("Symlink"));
 				inode->i_mode |= S_IFLNK;
 			} else {
@@ -293,7 +302,7 @@ static int get_sfu_uid_mode(struct inode * inode,
 	rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
 			ea_value, 4 /* size of buf */, cifs_sb->local_nls,
                         cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
-	if(rc < 0)
+	if (rc < 0)
 		return (int)rc;
 	else if (rc > 3) {
 		mode = le32_to_cpu(*((__le32 *)ea_value));
@@ -348,7 +357,7 @@ int cifs_get_inode_info(struct inode **pinode,
 		/* 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)) {
+		if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
 			rc = SMBQueryInformation(xid, pTcon, search_path,
 					pfindData, cifs_sb->local_nls, 
 					cifs_sb->mnt_cifs_flags &
@@ -425,7 +434,7 @@ int cifs_get_inode_info(struct inode **pinode,
 				} else /* do we need cast or hash to ino? */
 					(*pinode)->i_ino = inode_num;
 			} /* else ino incremented to unique num in new_inode*/
-			if(sb->s_flags & MS_NOATIME)
+			if (sb->s_flags & MS_NOATIME)
 				(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
 			insert_inode_hash(*pinode);
 		}
@@ -442,7 +451,7 @@ int cifs_get_inode_info(struct inode **pinode,
 		(pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
 
 		/* Linux can not store file creation time so ignore it */
-		if(pfindData->LastAccessTime)
+		if (pfindData->LastAccessTime)
 			inode->i_atime = cifs_NTtimeToUnix
 				(le64_to_cpu(pfindData->LastAccessTime));
 		else /* do not need to use current_fs_time - time not stored */
@@ -452,7 +461,7 @@ int cifs_get_inode_info(struct inode **pinode,
 		inode->i_ctime =
 		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
 		cFYI(0, ("Attributes came in as 0x%x", attr));
-		if(adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
+		if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
 			inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
 	                inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
 		}
@@ -521,8 +530,10 @@ int cifs_get_inode_info(struct inode **pinode,
 
 		/* BB fill in uid and gid here? with help from winbind? 
 		   or retrieve from NTFS stream extended attribute */
-		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
+		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
 			/* fill in uid, gid, mode from server ACL */
+			/* BB FIXME this should also take into account the
+			 * default uid specified on mount if present */
 			get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
 		} else if (atomic_read(&cifsInfo->inUse) == 0) {
 			inode->i_uid = cifs_sb->mnt_uid;
@@ -541,12 +552,12 @@ int cifs_get_inode_info(struct inode **pinode,
 						&cifs_file_direct_nobrl_ops;
 				else
 					inode->i_fop = &cifs_file_direct_ops;
-			} else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+			} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
 				inode->i_fop = &cifs_file_nobrl_ops;
 			else /* not direct, send byte range locks */
 				inode->i_fop = &cifs_file_ops;
 
-			if(pTcon->ses->server->maxBuf < 
+			if (pTcon->ses->server->maxBuf < 
 			     PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
 				inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
 			else
@@ -597,7 +608,7 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
 
 	xid = GetXid();
 
-	if(inode)
+	if (inode)
 		cifs_sb = CIFS_SB(inode->i_sb);
 	else
 		cifs_sb = CIFS_SB(direntry->d_sb);
@@ -723,7 +734,7 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
 					   when needed */
 		direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
 	}
-	if(inode) {
+	if (inode) {
 		inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
 		cifsInode = CIFS_I(inode);
 		cifsInode->time = 0;	/* force revalidate of dir as well */