e2fsck: handle superblock checksum errors gracefully

If e2fsck finds a superblock with an invalid checksum, try the
backups.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index 6348777..b596a69 100644 (file)
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -1269,6 +1269,7 @@ restart:
        if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
            !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
            ((retval == EXT2_ET_BAD_MAGIC) ||
+            (retval == EXT2_ET_SB_CSUM_INVALID) ||
             (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
             ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
                if (retval) {