Remove backup_uses_rcs from rc.subr

In preparation for the removal of GNU rcs from base, remove the backup_uses_rcs
functionality from the rc.subr backup_file feature. This functionnality was off
by default

Reviewed by:	wblock
Differential Revision:	https://reviews.freebsd.org/D7883

1 files changed, 15 insertions, 61 deletions

diff --git a/etc/rc.subr b/etc/rc.subr
index 8da111acec8f..5b29ccf2e0b7 100644
--- a/etc/rc.subr
+++ b/etc/rc.subr
@@ -1532,28 +1532,20 @@ debug()
 #
 # backup_file action file cur backup
 #	Make a backup copy of `file' into `cur', and save the previous
-#	version of `cur' as `backup' or use rcs for archiving.
-#
-#	This routine checks the value of the backup_uses_rcs variable,
-#	which can be either YES or NO.
+#	version of `cur' as `backup'.
 #
 #	The `action' keyword can be one of the following:
 #
 #	add		`file' is now being backed up (and is possibly
 #			being reentered into the backups system).  `cur'
-#			is created and RCS files, if necessary, are
-#			created as well.
+#			is created.
 #
 #	update		`file' has changed and needs to be backed up.
-#			If `cur' exists, it is copied to to `back' or
-#			checked into RCS (if the repository file is old),
-#			and then `file' is copied to `cur'.  Another RCS
-#			check in done here if RCS is being used.
+#			If `cur' exists, it is copied to to `back'
+#			and then `file' is copied to `cur'.
 #
 #	remove		`file' is no longer being tracked by the backups
-#			system.  If RCS is not being used, `cur' is moved
-#			to `back', otherwise an empty file is checked in,
-#			and then `cur' is removed.
+#			system.  `cur' is moved `back'.
 #
 #
 backup_file()
@@ -1563,56 +1555,18 @@ backup_file()
 	_cur=$3
 	_back=$4
 
-	if checkyesno backup_uses_rcs; then
-		_msg0="backup archive"
-		_msg1="update"
-
-		# ensure that history file is not locked
-		if [ -f $_cur,v ]; then
-			rcs -q -u -U -M $_cur
-		fi
-
-		# ensure after switching to rcs that the
-		# current backup is not lost
+	case $_action in
+	add|update)
 		if [ -f $_cur ]; then
-			# no archive, or current newer than archive
-			if [ ! -f $_cur,v -o $_cur -nt $_cur,v ]; then
-				ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
-				rcs -q -kb -U $_cur
-				co -q -f -u $_cur
-			fi
+			cp -p $_cur $_back
 		fi
-
-		case $_action in
-		add|update)
-			cp -p $_file $_cur
-			ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
-			rcs -q -kb -U $_cur
-			co -q -f -u $_cur
-			chown root:wheel $_cur $_cur,v
-			;;
-		remove)
-			cp /dev/null $_cur
-			ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
-			rcs -q -kb -U $_cur
-			chown root:wheel $_cur $_cur,v
-			rm $_cur
-			;;
-		esac
-	else
-		case $_action in
-		add|update)
-			if [ -f $_cur ]; then
-				cp -p $_cur $_back
-			fi
-			cp -p $_file $_cur
-			chown root:wheel $_cur
-			;;
-		remove)
-			mv -f $_cur $_back
-			;;
-		esac
-	fi
+		cp -p $_file $_cur
+		chown root:wheel $_cur
+		;;
+	remove)
+		mv -f $_cur $_back
+		;;
+	esac
 }
 
 # make_symlink src link