Remove the -C option as it does more harm than good. To be fully

compatible, it would have to (at least):

- support the "compat-compat" -T option,
- *not* support the -l, -O, and -v options,
- default to soft updates being disabled.

Worse, the compatibility mode makes it impossible to mount_mfs(8)
a file system from fstab(5) with soft updates disabled (-S).  [1]

Now, the only difference when called as "mount_mfs" or "mfs" (as
opposed to "mdmfs") is that the file mode of the mount point is
set by default to 01777.  All options available to mdmfs(8) are
also available to mount_mfs(8); the -C option is still recognized
but ignored for backward compatibility.

PR:		bin/98860 [1]
MFC after:	2 weeks

1 files changed, 7 insertions, 39 deletions

diff --git a/sbin/mdmfs/mdmfs.8 b/sbin/mdmfs/mdmfs.8
index 50d749a..1259309 100644
--- a/sbin/mdmfs/mdmfs.8
+++ b/sbin/mdmfs/mdmfs.8
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd October 1, 2006
+.Dd November 3, 2006
 .Dt MDMFS 8
 .Os
 .Sh NAME
@@ -56,26 +56,6 @@ driver
 .Op Fl w Ar user : Ns Ar group
 .Ar md-device
 .Ar mount-point
-.Nm
-.Fl C
-.Op Fl lNU
-.Op Fl a Ar maxcontig
-.Op Fl b Ar block-size
-.Op Fl c Ar cylinders
-.Op Fl d Ar rotdelay
-.Op Fl E Ar path-mdconfig
-.Op Fl e Ar maxbpg
-.Op Fl F Ar file
-.Op Fl f Ar frag-size
-.Op Fl i Ar bytes
-.Op Fl m Ar percent-free
-.Op Fl n Ar rotational-positions
-.Op Fl O Ar optimization
-.Op Fl o Ar mount-options
-.Op Fl s Ar size
-.Op Fl v Ar version
-.Ar md-device
-.Ar mount-point
 .Sh DESCRIPTION
 The
 .Nm
@@ -134,12 +114,6 @@ out before forcing a rotational delay
 option).
 .It Fl b Ar block-size
 The block size of the file system, in bytes.
-.It Fl C
-Enable full compatibility mode with
-.Xr mount_mfs 8 .
-See the
-.Sx COMPATIBILITY
-section for more information.
 .It Fl c Ar cylinders
 The number of cylinders per cylinder group in the file system.
 .It Fl D
@@ -250,7 +224,7 @@ backed disks
 .Pq Dv MD_MALLOC .
 .It Fl U
 Enable soft-updates on the file system.
-This is the default, even in compatibility mode, and is accepted only
+This is the default, and is accepted only
 for compatibility.
 It is only really useful to negate the
 .Fl S
@@ -337,19 +311,16 @@ do not use soft-updates on it and mount it
 .Sh COMPATIBILITY
 The
 .Nm
-utility, while designed to be fully compatible with
+utility, while designed to be compatible with
 .Xr mount_mfs 8 ,
 can be useful by itself.
 Since
 .Xr mount_mfs 8
 had some silly defaults, a
-.Dq full compatibility
+.Dq compatibility
 mode is provided for the case where bug-to-bug compatibility is desired.
 .Pp
-Full compatibility is enabled with the
-.Fl C
-flag,
-or by starting
+Compatibility is enabled by starting
 .Nm
 with the name
 .Li mount_mfs
@@ -357,17 +328,14 @@ or
 .Li mfs
 (as returned by
 .Xr getprogname 3 ) .
-In this mode, only the options which would be accepted by
-.Xr mount_mfs 8
-are valid.
-Furthermore, the following behavior, as done by
+In this mode, the following behavior, as done by
 .Xr mount_mfs 8 ,
 is duplicated:
 .Bl -bullet -offset indent
 .It
 The file mode of
 .Ar mount-point
-is set to
+is set by default to
 .Li 01777
 as if
 .Fl p Ar 1777