Teach ext2fs_open2() to honor the EXT2_FLAG_SUPER_ONLY flag

[tools/e2fsprogs.git] / lib / ext2fs / openfs.c

diff --git a/lib/ext2fs/openfs.c b/lib/ext2fs/openfs.c
index 51b54a4..ec2d6cb 100644 (file)
--- a/lib/ext2fs/openfs.c
+++ b/lib/ext2fs/openfs.c
@@ -393,6 +393,8 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
        }
        fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
                                          EXT2_DESC_PER_BLOCK(fs->super));
+       if (flags & EXT2_FLAG_SUPER_ONLY)
+               goto skip_read_bg;
        retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
                                &fs->group_desc);
        if (retval)
@@ -479,7 +481,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
                if (fs->flags & EXT2_FLAG_RW)
                        ext2fs_mark_super_dirty(fs);
        }
-
+skip_read_bg:
        if (ext2fs_has_feature_mmp(fs->super) &&
            !(flags & EXT2_FLAG_SKIP_MMP) &&
            (flags & (EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE))) {