linux.git/fs/ext3/ioctl.c, branch v2.6.27

[PATCH] r/o bind mounts: elevate write count for ioctls()

2008-04-19T04:29:24+00:00

Some ioctl()s can cause writes to the filesystem.  Take these, and make them
use mnt_want/drop_write() instead.

[AV: updated]

Acked-by: Al Viro 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Dave Hansen 
Signed-off-by: Andrew Morton 
Signed-off-by: Al Viro

Forbid user to change file flags on quota files

2007-11-15T02:45:38+00:00

Forbid user from changing file flags on quota files.  User has no bussiness
in playing with these flags when quota is on.  Furthermore there is a
remote possibility of deadlock due to a lock inversion between quota file's
i_mutex and transaction's start (i_mutex for quota file is locked only when
trasaction is started in quota operations) in ext3 and ext4.

Signed-off-by: Jan Kara 
Cc: LIOU Payphone 
Cc: 
Acked-by: Dave Kleikamp 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check

2007-07-17T19:00:03+00:00

Introduce is_owner_or_cap() macro in fs.h, and convert over relevant
users to it. This is done because we want to avoid bugs in the future
where we check for only effective fsuid of the current task against a
file's owning uid, without simultaneously checking for CAP_FOWNER as
well, thus violating its semantics.
[ XFS uses special macros and structures, and in general looked ...
untouchable, so we leave it alone -- but it has been looked over. ]

The (current->fsuid != inode->i_uid) check in generic_permission() and
exec_permission_lite() is left alone, because those operations are
covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations
falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone.

Signed-off-by: Satyam Sharma 
Cc: Al Viro 
Acked-by: Serge E. Hallyn 
Signed-off-by: Linus Torvalds

ext3: copy i_flags to inode flags on write

2007-05-08T18:15:12+00:00

A patch that stores inode flags such as S_IMMUTABLE, S_APPEND, etc.  from
i_flags to EXT3_I(inode)->i_flags when inode is written to disk.  The same
thing is done on GETFLAGS ioctl.

Quota code changes these flags on quota files (to make it harder for
sysadmin to screw himself) and these changes were not correctly propagated
into the filesystem (especially, lsattr did not show them and users were
wondering...).

Propagate flags such as S_APPEND, S_IMMUTABLE, etc.  from i_flags into
ext3-specific i_flags.  Hence, when someone sets these flags via a
different interface than ioctl, they are stored correctly.

Signed-off-by: Jan Kara 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3: change uses of f_{dentry, vfsmnt} to use f_path

2006-12-08T16:28:41+00:00

Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the ext3
filesystem.

Signed-off-by: Josef "Jeff" Sipek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] BLOCK: Move the Ext3 device ioctl compat stuff to the Ext3 driver [try #6]

2006-09-30T18:52:29+00:00

Move the Ext3 device ioctl compat stuff from fs/compat_ioctl.c to the Ext3
driver so that the Ext3 header file doesn't need to be included.

Signed-Off-By: David Howells 
Signed-off-by: Jens Axboe

[PATCH] ext3_fsblk_t: the rest of in-kernel filesystem blocks conversion

2006-06-25T17:01:10+00:00

Convert the ext3 in-kernel filesystem blocks to ext3_fsblk_t.  Convert the
rest of all unsigned long type in-kernel filesystem blocks to ext3_fsblk_t,
and replace the printk format string respondingly.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] protect ext3 ioctl modifying append_only, immutable, etc. with i_mutex

2006-04-26T14:52:21+00:00

All modifications of ->i_flags in inodes that might be visible to
somebody else must be under ->i_mutex.  That patch fixes ext3 ioctl()
setting S_APPEND and friends.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] convert ext3's truncate_sem to a mutex

2006-03-23T15:38:14+00:00

ext3's truncate_sem is always released in the same function it's taken
and it otherwise is a mutex as well..

Signed-off-by: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] capable/capability.h (fs/)

2006-01-12T02:42:13+00:00

fs: Use  where capable() is used.

Signed-off-by: Randy Dunlap 
Acked-by: Tim Schmielau 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds