Correct fsck journal-recovery code to update a cylinder-group

check-hash after making changes to the cylinder group. The problem
was that the journal-recovery code was calling the libufs bwrite()
function instead of the cgput() function. The cgput() function updates
the cylinder-group check-hash before writing the cylinder group.

This change required the additions of the cgget() and cgput() functions
to the libufs API to avoid a gratuitous bcopy of every cylinder group
to be read or written. These new functions have been added to the
libufs manual pages. This was the first opportunity that I have had
to use and document the use of the EDOOFUS error code.

Reviewed by: kib
Reported by: emaste and others

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/libufs/libufs.h b/lib/libufs/libufs.h
index 7201d00b2715..400704596148 100644
--- a/lib/libufs/libufs.h
+++ b/lib/libufs/libufs.h
@@ -111,6 +111,8 @@ int berase(struct uufsd *, ufs2_daddr_t, ufs2_daddr_t);
 ufs2_daddr_t cgballoc(struct uufsd *);
 int cgbfree(struct uufsd *, ufs2_daddr_t, long);
 ino_t cgialloc(struct uufsd *);
+int cgget(struct uufsd *, int, struct cg *);
+int cgput(struct uufsd *, struct cg *);
 int cgread(struct uufsd *);
 int cgread1(struct uufsd *, int);
 int cgwrite(struct uufsd *);