varshm check in postinstall

[Masanobu SAITOH <msaitoh%execsw.org@localhost>]

 Hi.

 If var_shm_symlink="/tmp/.shm" is in /etc/rc.conf and no /var/shm mount
in /etc/fstab, postinstall complains:

	varshm check:
        No /var/shm mount found in /etc/fstab

So, I propose the following change:

Index: postinstall
===================================================================
RCS file: /cvsroot/src/usr.sbin/postinstall/postinstall,v
retrieving revision 1.221
diff -u -p -r1.221 postinstall
--- postinstall	4 Dec 2018 16:53:44 -0000	1.221
+++ postinstall	31 Jan 2019 08:22:15 -0000
@@ -2229,7 +2229,10 @@ do_varshm()
 	failed=0
 
 	[ -f "${DEST_DIR}/etc/fstab" ] || return 0
-	if ${GREP} -w "/var/shm" "${DEST_DIR}/etc/fstab" >/dev/null 2>&1;
+	if ${GREP} -E "^var_shm_symlink" "${DEST_DIR}/etc/rc.conf" >/dev/null 2>&1;
+	then
+		failed=0;
+	elif ${GREP} -w "/var/shm" "${DEST_DIR}/etc/fstab" >/dev/null 2>&1;
 	then
 		failed=0;
 	else

OK?

--
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)