New struct statfs with mount options. NOTE: this replaces statfs(2),

fstatfs(2), and getfsstat(2) so you will need to build a new kernel
before doing a "make build" or you will get "unimplemented syscall" errors.

The new struct statfs has the following featuires:
o Has a u_int32_t flags field--now softdep can have a real flag.

o Uses u_int32_t instead of longs (nicer on the alpha).  Note: the man
page used to lie about setting invalid/unused fields to -1.  SunOS does
that but our code never has.

o Gets rid of f_type completely.  It hasn't been used since NetBSD 0.9
and having it there but always 0 is confusing.  It is conceivable
that this may cause some old code to not compile but that is better
than silently breaking.

o Adds a mount_info union that contains the FSTYPE_args struct.  This
means that "mount" can now tell you all the options a filesystem was
mounted with.  This is especially nice for NFS.

Other changes:
o The linux statfs emulation didn't convert between BSD fs names
  and linux f_type numbers.  Now it does, since the BSD f_type
  number is useless to linux apps (and has been removed anyway)

o FreeBSD's struct statfs is different from our (both old and new)
and thus needs conversion.  Previously, the OpenBSD syscalls
were used without any real translation.

o mount(8) will now show extra info when invoked with no arguments.
However, to see *everything* you need to use the -v (verbose) flag.

1 files changed, 5 insertions, 6 deletions

diff --git a/sys/ufs/mfs/mfs_vfsops.c b/sys/ufs/mfs/mfs_vfsops.c
index 831715431f9..cb01fc418d7 100644
--- a/sys/ufs/mfs/mfs_vfsops.c
+++ b/sys/ufs/mfs/mfs_vfsops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mfs_vfsops.c,v 1.7 1999/03/09 00:17:05 art Exp $	*/
+/*	$OpenBSD: mfs_vfsops.c,v 1.8 1999/05/31 17:34:55 millert Exp $	*/
 /*	$NetBSD: mfs_vfsops.c,v 1.10 1996/02/09 22:31:28 christos Exp $	*/
 
 /*
@@ -230,6 +230,7 @@ mfs_mount(mp, path, data, ndp, p)
 	(void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
 	    &size);
 	bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
+	bcopy(&args, &mp->mnt_stat.mount_info.mfs_args, sizeof(args));
 	return (0);
 }
 
@@ -298,11 +299,9 @@ mfs_statfs(mp, sbp, p)
 	int error;
 
 	error = ffs_statfs(mp, sbp, p);
-#ifdef COMPAT_09
-	sbp->f_type = mp->mnt_vfc->vfc_typenum;
-#else
-	sbp->f_type = 0;
-#endif
 	strncpy(&sbp->f_fstypename[0], mp->mnt_vfc->vfc_name, MFSNAMELEN);
+	if (sbp != &mp->mnt_stat)
+		bcopy(&mp->mnt_stat.mount_info.mfs_args,
+		    &sbp->mount_info.mfs_args, sizeof(struct mfs_args));
 	return (error);
 }