Date: Tue, 16 Nov 2021 00:03:59 GMT From: Kirk McKusick <mckusick@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 9e9dcac95ad0 - main - Allow forced r/w mount of UFS/FFS filesystem with a bad check hash. Message-ID: <202111160003.1AG03xJc007510@gitrepo.freebsd.org>
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The branch main has been updated by mckusick: URL: https://cgit.FreeBSD.org/src/commit/?id=9e9dcac95ad0a6c49a01619f82290fbf512fe25b commit 9e9dcac95ad0a6c49a01619f82290fbf512fe25b Author: Kirk McKusick <mckusick@FreeBSD.org> AuthorDate: 2021-11-16 00:03:08 +0000 Commit: Kirk McKusick <mckusick@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;
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