From 4b74f91ad7480d71853ae1170d065917afc426a2 Mon Sep 17 00:00:00 2001

From: Theodore Ts'o <tytso@mit.edu>

Date: Thu, 16 Jan 2020 18:56:49 -0500

Subject: [PATCH 03/46] libext2fs: teach ext2fs_flush() to check if group

 descriptors are loaded

Content-Type: text/plain

If the EXT2_FLAG_SUPER_ONLY is not set, and the group descriptors are

not loaded, ext2fs_flush[2]() will return EXT2_ET_NO_GDESC.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

Signed-off-by: Lukas Czerner <lczerner@redhat.com>

---

 lib/ext2fs/closefs.c | 5 +++++

 1 file changed, 5 insertions(+)

diff --git a/lib/ext2fs/closefs.c b/lib/ext2fs/closefs.c

index 1d4d5b7f..6814cdc3 100644

--- a/lib/ext2fs/closefs.c

+++ b/lib/ext2fs/closefs.c

@@ -293,6 +293,11 @@ errcode_t ext2fs_flush2(ext2_filsys fs, int flags)

 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

+	if ((fs->flags & EXT2_FLAG_SUPER_ONLY) == 0 &&

+	    !ext2fs_has_feature_journal_dev(fs->super) &&

+	    fs->group_desc == NULL)

+		return EXT2_ET_NO_GDESC;

+

 	fs_state = fs->super->s_state;

 	feature_incompat = fs->super->s_feature_incompat;

-- 

2.35.1