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libext2fs: during punch, fix parent extents after modifying extent 

When modifying/removing an extent during punch, don't forget to update
the extent's parents.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
maint-test
Darrick J. Wong 2014-02-06 15:30:59 -05:00 committed by Theodore Ts'o
parent 80dec4cb31
commit 3c890ee96e
1 changed files with 8 additions and 0 deletions
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8
lib/ext2fs/punch.c
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@ -353,6 +353,9 @@ static errcode_t ext2fs_punch_extent(ext2_filsys fs, ext2_ino_t ino,
if (extent.e_len) {
dbg_print_extent("replacing", &extent);
retval = ext2fs_extent_replace(handle, 0, &extent);
if (retval)
goto errout;
retval = ext2fs_extent_fix_parents(handle);
} else {
struct ext2fs_extent newex;
blk64_t old_lblk, next_lblk;
@ -387,6 +390,11 @@ static errcode_t ext2fs_punch_extent(ext2_filsys fs, ext2_ino_t ino,
if (retval)
goto errout;
retval = ext2fs_extent_fix_parents(handle);
if (retval && retval != EXT2_ET_NO_CURRENT_NODE)
goto errout;
retval = 0;
/* Jump forward to the next extent. */
ext2fs_extent_goto(handle, next_lblk);
op = EXT2_EXTENT_CURRENT;