linux.git/fs/fat, branch v2.6.26-rc7 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git fat: relax the permission check of fat_setattr() 2008-06-13T01:05:39+00:00 OGAWA Hirofumi hirofumi@mail.parknet.co.jp 2008-06-12T22:21:28+00:00 2d518f84e5ecd1d71df0e6ac5176d212f68c27ce New chmod() allows only acceptable permission, and if not acceptable, it returns -EPERM. Old one allows even if it can't store permission to on disk inode. But it seems too strict for users. E.g. https://bugzilla.redhat.com/show_bug.cgi?id=449080: With new one, rsync couldn't create the temporary file. So, this patch allows like old one, but now it doesn't change the permission if it can't store, and it returns 0. Also, this patch fixes missing check. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
New chmod() allows only acceptable permission, and if not acceptable, it
returns -EPERM.  Old one allows even if it can't store permission to on
disk inode.  But it seems too strict for users.

E.g.  https://bugzilla.redhat.com/show_bug.cgi?id=449080: With new one,
rsync couldn't create the temporary file.

So, this patch allows like old one, but now it doesn't change the
permission if it can't store, and it returns 0.

Also, this patch fixes missing check.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs: replace remaining __FUNCTION__ occurrences 2008-04-30T15:29:54+00:00 Harvey Harrison harvey.harrison@gmail.com 2008-04-30T07:55:09+00:00 8e24eea728068bbeb6a3c500b848f883a20bf225 __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fat: use get/put_unaligned_* helpers 2008-04-29T15:06:28+00:00 Harvey Harrison harvey.harrison@gmail.com 2008-04-29T08:03:43+00:00 803f445f17aa1b71235ad6febae734dd7ad23ddd Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fatfs: fix build warning with 64k PAGE_SIZE 2008-04-28T15:58:47+00:00 Olof Johansson olof@lixom.net 2008-04-28T09:16:32+00:00 9f354858b8ea29e969b82dd96caea376157d76ca Annoying gcc warning: fs/fat/inode.c: In function 'fat_fill_super': fs/fat/inode.c:1222: warning: comparison is always false due to limited range of data type Change it to compare with 4K instead of PAGE_CACHE_SIZE, as suggested by OGAWA-san. [FAT spec says: logical_sector_size should be 512, 1024, 2048 4096] So, at least for now, we limit it to 4096. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Annoying gcc warning:

fs/fat/inode.c: In function 'fat_fill_super':
fs/fat/inode.c:1222: warning: comparison is always false due to limited range of data type

Change it to compare with 4K instead of PAGE_CACHE_SIZE, as suggested
by OGAWA-san.

[FAT spec says: logical_sector_size should be 512, 1024, 2048 4096]
So, at least for now, we limit it to 4096.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
FAT_VALID_MEDIA(): remove pointless test 2008-04-28T15:58:47+00:00 Andrew Morton akpm@linux-foundation.org 2008-04-28T09:16:30+00:00 73f20e58b1d586e9f6d3ddc3aad872829aca7743 The on-disk media specification field in FAT is only 8-bits, so testing for <=0xff is pointless, and can generate a "comparison is always true due to limited range of data type" warning. While we're there, convert FAT_VALID_MEDIA() into a C function - the present implementation is buggy: it generates either one or two references to its argument. Cc: Frank Seidel <fseidel@suse.de> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
The on-disk media specification field in FAT is only 8-bits, so testing for
<=0xff is pointless, and can generate a "comparison is always true due to
limited range of data type" warning.

While we're there, convert FAT_VALID_MEDIA() into a C function - the present
implementation is buggy: it generates either one or two references to its
argument.

Cc: Frank Seidel <fseidel@suse.de>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fat: use __getname() 2008-04-28T15:58:47+00:00 OGAWA Hirofumi hirofumi@mail.parknet.co.jp 2008-04-28T09:16:29+00:00 c7a6c4edc74ee5c3d990325fe93b6916f43499f4 __getname() is faster than __get_free_page(). Use it. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
__getname() is faster than __get_free_page(). Use it.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
vfat: bug fix for vfat cannot handle filename with 255 2008-04-28T15:58:47+00:00 Keith Mok ek9852@gmail.com 2008-04-28T09:16:29+00:00 f22032ba8de2960a64a3dd9719fb5c99b1f1ae6e This patch fix the problem that the buffer allocated for convert of unicode to utf8 in fat/dir.c is too small. And cannot handle filename with 255 asian characters when mounted with utf8 options. Also it fix the filename length limitation checking in vfat/namei.c that the filename length should be checked against the number of converted unicode characters. Not the length before NLS/UTF8 converted. Signed-off-by: Keith Mok <ek9852@gmail.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This patch fix the problem that the buffer allocated for convert of unicode to
utf8 in fat/dir.c is too small.

And cannot handle filename with 255 asian characters when mounted with utf8
options.

Also it fix the filename length limitation checking in vfat/namei.c that the
filename length should be checked against the number of converted unicode
characters.

Not the length before NLS/UTF8 converted.

Signed-off-by: Keith Mok <ek9852@gmail.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fat: Remove fat_clusters_flush() 2008-04-28T15:58:47+00:00 OGAWA Hirofumi hirofumi@mail.parknet.co.jp 2008-04-28T09:16:27+00:00 e69be4c9c4ac1b6bb6380512557da0afa6262e98 This removes unneeded fat_clusters_flush(). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This removes unneeded fat_clusters_flush().

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fat: Update free_clusters even if it is untrusted 2008-04-28T15:58:47+00:00 OGAWA Hirofumi hirofumi@mail.parknet.co.jp 2008-04-28T09:16:27+00:00 606e423e43bac0c2f7b85b682eb1ddd2a634586e Currently, free_clusters is not updated until it is trusted, because Windows doesn't update it correctly. But if user is using FAT driver of Linux, it updates free_clusters correctly. Instead, this updates it even if it's untrusted, so if free_clustes is correct, now keep correct value. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Currently, free_clusters is not updated until it is trusted, because
Windows doesn't update it correctly.

But if user is using FAT driver of Linux, it updates free_clusters
correctly.  Instead, this updates it even if it's untrusted, so if
free_clustes is correct, now keep correct value.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fat: Add allow_utime option 2008-04-28T15:58:47+00:00 OGAWA Hirofumi hirofumi@mail.parknet.co.jp 2008-04-28T09:16:26+00:00 1ae43f826b6cb951fc5b0f9c92372a8d5b63c7f9 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 as on disk info, so normal check is too unflexible. With this option you can relax it. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
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 as
on disk info, so normal check is too unflexible.

With this option you can relax it.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>