Commit bbe1bd0b authored Aug 09, 2016 by Luis de Bethencourt

befs: add check for ag_shift in superblock

ag_shift and blocks_per_ag contain the same information in different ways,
same as block_shift and block_size do. It is worth checking this two are
consistent, but since blocks_per_ag isn't documented as mandatory to use
some implementations of befs don't enforce this, so making it non-fatal if
they don't match and just having it as a warning.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Salah Triki <salah.triki@gmail.com>

parent d1a8c706

fs/befs/super.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -103,6 +103,13 @@ befs_check_sb(struct super_block *sb)
		return BEFS_ERR;
		}


		/* ag_shift also encodes the same information as blocks_per_ag in a
		* different way, non-fatal consistency check
		*/
		if ((1 << befs_sb->ag_shift) != befs_sb->blocks_per_ag)
		befs_error(sb, "ag_shift disagrees with blocks_per_ag.");

		if (befs_sb->log_start != befs_sb->log_end \|\| befs_sb->flags == BEFS_DIRTY) {
		befs_error(sb, "Filesystem not clean! There are blocks in the "
		"journal. You must boot into BeOS and mount this volume "