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| author | Evgeniy Dushistov <dushistov@mail.ru> | 2006-07-01 04:36:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-01 09:56:03 -0700 |
| commit | 10e5dce07e6f8f9cea1b54161a888bb099484f88 (patch) | |
| tree | 9c7949cf82763344d86ae302748f8e1d278b565a /fs/ufs/inode.c | |
| parent | eb28931e4a2c89e53d2b0c1a02a843240bff0806 (diff) | |
| download | kernel-common-10e5dce07e6f8f9cea1b54161a888bb099484f88.tar.gz kernel-common-10e5dce07e6f8f9cea1b54161a888bb099484f88.tar.bz2 kernel-common-10e5dce07e6f8f9cea1b54161a888bb099484f88.zip | |
[PATCH] ufs: truncate should allocate block for last byte
This patch fixes buggy behaviour of UFS
in such kind of scenario:
open(, O_TRUNC...)
ftruncate(, 1024)
ftruncate(, 0)
Such a scenario causes ufs_panic and remount read-only. This happen
because of according to specification UFS should always allocate block for
last byte, and many parts of our implementation rely on this, but
`ufs_truncate' doesn't care about this.
To make possible return error code and to know about old size, this patch
removes `truncate' from ufs inode_operations and uses `setattr' method to
call ufs_truncate.
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ufs/inode.c')
| -rw-r--r-- | fs/ufs/inode.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 488b5ff48afb..e7c8615beb65 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -843,14 +843,17 @@ int ufs_sync_inode (struct inode *inode) void ufs_delete_inode (struct inode * inode) { + loff_t old_i_size; + truncate_inode_pages(&inode->i_data, 0); /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ lock_kernel(); mark_inode_dirty(inode); ufs_update_inode(inode, IS_SYNC(inode)); + old_i_size = inode->i_size; inode->i_size = 0; - if (inode->i_blocks) - ufs_truncate (inode); + if (inode->i_blocks && ufs_truncate(inode, old_i_size)) + ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n"); ufs_free_inode (inode); unlock_kernel(); } |