libext2: advance group in ext2fs_open2 during swapping

Without this change, we go back to getting group descriptor
"0" each time we go around the "for i" loop.  It must properly
advance through the filesystem.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/lib/ext2fs/openfs.c b/lib/ext2fs/openfs.c
index 0cefe3f..40a52c5 100644 (file)
--- a/lib/ext2fs/openfs.c
+++ b/lib/ext2fs/openfs.c
@@ -356,8 +356,8 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
                        goto cleanup;
 #ifdef WORDS_BIGENDIAN
                for (j=0; j < groups_per_block; j++) {
-                       /* The below happens to work... be careful. */
-                       gdp = ext2fs_group_desc(fs, fs->group_desc, j);
+                       gdp = ext2fs_group_desc(fs, fs->group_desc,
+                                               i * groups_per_block + j);
                        ext2fs_swap_group_desc2(fs, gdp);
                }
 #endif