update_bootcfg improvements.

- Fix a glitch (don't glob '*' in for).
- update_bootcfg should be a /bin command.
- update_bootcfg should not add menu entries for missing kernels.

tools/Makefile

@@ -98,7 +98,7 @@ hdboot: image
 	strip -s /boot/minix/.temp/kernel
 	[ -d /boot/image ] && ln -f /boot/minix/.temp/kernel /boot/kernel || true
 	sh mkboot $@ minix
-	exec sh update_bootcfg.sh
+	sh ../commands/update_bootcfg/update_bootcfg.sh
 
 fdboot:	image
 	exec su root mkboot $@

tools/update_bootcfg.sh

@@ -1,39 +0,0 @@
-#!/bin/sh
-set -e
-
-ROOT=`printroot -r`
-DEFAULTCFG=/etc/boot.cfg.default
-LOCALCFG=/etc/boot.cfg.local
-TMP=/boot.cfg.temp
-
-if [ ! -b "$ROOT" ]
-then
-	echo root device $ROOT not found
-	exit 1
-fi
-
-rootdevname=`echo $ROOT | sed 's/\/dev\///'`
-
-if [ -r $DEFAULTCFG ]
-then
-	default_cfg=`cat $DEFAULTCFG`
-	# Substitute variables like $rootdevname
-	echo "$default_cfg" | while read line; do eval echo \"$line\" >> $TMP; done
-fi
-
-latest=`basename \`stat -f "%Y" /boot/minix_latest\``
-
-for i in /boot/minix/*
-do
-	build_name="`basename $i`"
-	if [ "$build_name" != "$latest" ]
-	then
-		echo "menu=Start MINIX 3 ($build_name):load_mods $i/mod*;multiboot $i/kernel rootdevname=$rootdevname" >> /$TMP
-	fi
-done
-
-[ -r $LOCALCFG ] && cat $LOCALCFG >> $TMP
-
-mv $TMP /boot.cfg
-
-sync