libext2fs: update i_size in ext2fs_file_write()
ext2fs_file_write() needs to update i_size on successful write,
otherwise, ext2fs_file_read() in same open/close cycle will not
be able to read the just written data.
This fixes a bug which results in the the problem of quotacheck
triggered on 'tune2fs -O quota' failed to write back multiple
users/groups accounting information.
Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/lib/ext2fs/fileio.c b/lib/ext2fs/fileio.c
index e6bc60a..059bda2 100644
--- a/lib/ext2fs/fileio.c
+++ b/lib/ext2fs/fileio.c
@@ -307,6 +307,15 @@
}
fail:
+ /* Update inode size */
+ if (count != 0 && EXT2_I_SIZE(&file->inode) < file->pos) {
+ errcode_t rc;
+
+ rc = ext2fs_file_set_size2(file, file->pos);
+ if (retval == 0)
+ retval = rc;
+ }
+
if (written)
*written = count;
return retval;