Merge branch 'for-linus' of git://neil.brown.name/md

[linux-2.6-omap-h63xx.git] / Documentation / filesystems / vfat.txt

diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index fcc123ffa2523d2dc3d932ddb63c240cf9052840..bbac4f1d90567c3f7ea0f46a869c091160390076 100644 (file)
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -17,6 +17,21 @@ dmask=###     -- The permission mask for the directory.
 fmask=###     -- The permission mask for files.
                  The default is the umask of current process.
 
+allow_utime=### -- This option controls the permission check of mtime/atime.
+
+                  20 - If current process is in group of file's group ID,
+                       you can change timestamp.
+                   2 - Other users can change timestamp.
+
+                 The default is set from `dmask' option. (If the directory is
+                 writable, utime(2) is also allowed. I.e. ~dmask & 022)
+
+                 Normally utime(2) checks current process is owner of
+                 the file, or it has CAP_FOWNER capability.  But FAT
+                 filesystem doesn't have uid/gid on disk, so normal
+                 check is too unflexible. With this option you can
+                 relax it.
+
 codepage=###  -- Sets the codepage number for converting to shortname
                 characters on FAT filesystem.
                 By default, FAT_DEFAULT_CODEPAGE setting is used.
@@ -81,6 +96,14 @@ shortname=lower|win95|winnt|mixed
                        emulate the Windows 95 rule for create.
                 Default setting is `lower'.
 
+tz=UTC        -- Interpret timestamps as UTC rather than local time.
+                 This option disables the conversion of timestamps
+                 between local time (as used by Windows on FAT) and UTC
+                 (which Linux uses internally).  This is particuluarly
+                 useful when mounting devices (like digital cameras)
+                 that are set to UTC in order to avoid the pitfalls of
+                 local time.
+
 <bool>: 0,1,yes,no,true,false
 
 TODO