The branch main has been updated by mckusick:
URL:
https://cgit.FreeBSD.org/src/commit/?id=9e9dcac95ad0a6c49a01619f82290fbf512fe25b
commit 9e9dcac95ad0a6c49a01619f82290fbf512fe25b
Author: Kirk McKusick <mckus...@freebsd.org>
AuthorDate: 2021-11-16 00:03:08 +0000
Commit: Kirk McKusick <mckus...@freebsd.org>
CommitDate: 2021-11-16 00:03:47 +0000
Allow forced r/w mount of UFS/FFS filesystem with a bad check hash.
Normally a UFS/FFS filesystem with a bad check hash can only be
mounted read only. With this commit the mount(8) -f (force) option
can be used to force a read-write mount of a UFS/FFS filesystem with
a bad check hash. Conveniently the filesystem will proceed to
update its on-disk superblock with a corrected check hash.
Sponsored by: Netflix
---
sys/ufs/ffs/ffs_vfsops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/ufs/ffs/ffs_vfsops.c b/sys/ufs/ffs/ffs_vfsops.c
index bdaf4c98b090..f2ea6b666fad 100644
--- a/sys/ufs/ffs/ffs_vfsops.c
+++ b/sys/ufs/ffs/ffs_vfsops.c
@@ -964,7 +964,7 @@ ffs_mountfs(odevvp, mp, td)
}
/* fetch the superblock and summary information */
loc = STDSB;
- if ((mp->mnt_flag & MNT_ROOTFS) != 0)
+ if ((mp->mnt_flag & (MNT_ROOTFS | MNT_FORCE)) != 0)
loc = STDSB_NOHASHFAIL;
if ((error = ffs_sbget(devvp, &fs, loc, M_UFSMNT, ffs_use_bread)) != 0)
goto out;
