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| author | Phillip Susi <psusi@cfl.rr.com> | 2006-03-25 03:08:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 08:23:00 -0800 |
| commit | 0e6b3e5e97e2e8a25bcfc528dad94edf5220dfeb (patch) | |
| tree | de537ca068cd7fc2a1d20a47f16c9091cf4c64ff /Documentation/filesystems/udf.txt | |
| parent | 11b0b5abb2097a63c1081d9b7e825b987b227972 (diff) | |
| download | kernel-crypto-0e6b3e5e97e2e8a25bcfc528dad94edf5220dfeb.tar.gz kernel-crypto-0e6b3e5e97e2e8a25bcfc528dad94edf5220dfeb.tar.xz kernel-crypto-0e6b3e5e97e2e8a25bcfc528dad94edf5220dfeb.zip | |
[PATCH] udf: fix uid/gid options and add uid/gid=ignore and forget options
As Pekka Enberg pointed out, with the if still following the else, you can
still get a null uid written to the disk if you specify a default uid= without
uid=forget. In other words, if the desktop user is uid=1000 and the mount
option uid=1000 is given ( which is done on ubuntu automatically and probably
other distributions that use hal ), then if any other user besides uid 1000
owns a file then a 0 will be written to the media as the owning uid instead.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/filesystems/udf.txt')
| -rw-r--r-- | Documentation/filesystems/udf.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/filesystems/udf.txt b/Documentation/filesystems/udf.txt index e5213bc301f..511b4230c05 100644 --- a/Documentation/filesystems/udf.txt +++ b/Documentation/filesystems/udf.txt @@ -26,6 +26,20 @@ The following mount options are supported: nostrict Unset strict conformance iocharset= Set the NLS character set +The uid= and gid= options need a bit more explaining. They will accept a +decimal numeric value which will be used as the default ID for that mount. +They will also accept the string "ignore" and "forget". For files on the disk +that are owned by nobody ( -1 ), they will instead look as if they are owned +by the default ID. The ignore option causes the default ID to override all +IDs on the disk, not just -1. The forget option causes all IDs to be written +to disk as -1, so when the media is later remounted, they will appear to be +owned by whatever default ID it is mounted with at that time. + +For typical desktop use of removable media, you should set the ID to that +of the interactively logged on user, and also specify both the forget and +ignore options. This way the interactive user will always see the files +on the disk as belonging to him. + The remaining are for debugging and disaster recovery: novrs Skip volume sequence recognition |