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| author | Dmitriy Monakhov <dmonakhov@sw.ru> | 2007-05-08 00:25:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:01 -0700 |
| commit | fedee54d8f12cdfde299f181fec5c62b0c647ad6 (patch) | |
| tree | 815a5de82d0c242bb1e6a012a237d0715c3b08af /fs/ext3 | |
| parent | 753e9c5cd9b123156152c66c816f751954b15e53 (diff) | |
| download | kernel-common-fedee54d8f12cdfde299f181fec5c62b0c647ad6.tar.gz kernel-common-fedee54d8f12cdfde299f181fec5c62b0c647ad6.tar.bz2 kernel-common-fedee54d8f12cdfde299f181fec5c62b0c647ad6.zip | |
ext3: dirindex error pointer issues
- ext3_dx_find_entry() exit with out setting proper error pointer
- do_split() exit with out setting proper error pointer
it is realy painful because many callers contain folowing code:
de = do_split(handle,dir, &bh, frame, &hinfo, &retval);
if (!(de))
return retval;
<<< WOW retval wasn't changed by do_split(), so caller failed
<<< but return SUCCESS :)
- Rearrange do_split() error path. Current error path is realy ugly, all
this up and down jump stuff doesn't make code easy to understand.
[dmonakhov@sw.ru: fix annoying fake error messages]
Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Cc: Andreas Dilger <adilger@clusterfs.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3')
| -rw-r--r-- | fs/ext3/namei.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index 49159f13cc1f..7edb617fd33d 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -969,6 +969,7 @@ static struct buffer_head * ext3_dx_find_entry(struct dentry *dentry, (block<<EXT3_BLOCK_SIZE_BITS(sb)) +((char *)de - bh->b_data))) { brelse (bh); + *err = ERR_BAD_DX_DIR; goto errout; } *res_dir = de; @@ -1134,9 +1135,9 @@ static struct ext3_dir_entry_2 *do_split(handle_t *handle, struct inode *dir, char *data1 = (*bh)->b_data, *data2; unsigned split; struct ext3_dir_entry_2 *de = NULL, *de2; - int err; + int err = 0; - bh2 = ext3_append (handle, dir, &newblock, error); + bh2 = ext3_append (handle, dir, &newblock, &err); if (!(bh2)) { brelse(*bh); *bh = NULL; @@ -1145,14 +1146,9 @@ static struct ext3_dir_entry_2 *do_split(handle_t *handle, struct inode *dir, BUFFER_TRACE(*bh, "get_write_access"); err = ext3_journal_get_write_access(handle, *bh); - if (err) { - journal_error: - brelse(*bh); - brelse(bh2); - *bh = NULL; - ext3_std_error(dir->i_sb, err); - goto errout; - } + if (err) + goto journal_error; + BUFFER_TRACE(frame->bh, "get_write_access"); err = ext3_journal_get_write_access(handle, frame->bh); if (err) @@ -1195,8 +1191,16 @@ static struct ext3_dir_entry_2 *do_split(handle_t *handle, struct inode *dir, goto journal_error; brelse (bh2); dxtrace(dx_show_index ("frame", frame->entries)); -errout: return de; + +journal_error: + brelse(*bh); + brelse(bh2); + *bh = NULL; + ext3_std_error(dir->i_sb, err); +errout: + *error = err; + return NULL; } #endif |