X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=chboot;h=2a357e6d2f1dba5e01d92bdd8fa597a3958cbfd0;hb=0963c8a7cc43c5380fa8085d41243aa3f2ead5a3;hp=884b2a55f80478fb6f0f0d47c489efc1b8bde5ab;hpb=57f8fa6a5b08bafdb6a422b6837d9b8cb3f7c396;p=automated-distro-installer

diff --git a/chboot b/chboot
index 884b2a5..2a357e6 100755
--- a/chboot
+++ b/chboot
@@ -1,24 +1,58 @@
 #!/bin/bash
+# Copyright (C) 2016 Ian Kelling
 
-# Set grub to boot into a different distro, and reboot unless -r
-# $0 [DISTRO_NAME]
-# with no argument, print available distros
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-# DISTRO_NAME is based on the partition names in /boot. eg boot_debianjessie
 
 set -eE -o pipefail
 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 [[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
 
+usage() {
+    cat <<EOF
+Usage: ${0##*/} [OPTIONS] DISTRO_NAME
+Set grub to boot into a different distro, and reboot unless -r
+
+With no argument, print available distros
+DISTRO_NAME is based on the partition names in /boot.
+For example debianjessie for the partitionn boot_debianjessie.
+
+-r         Do not reboot.
+-d         Enable debug output.
+-h|--help  Print help and exit.
+
+Note: Uses GNU getopt options parsing style
+EOF
+    exit $1
+}
+
+
+grub_extn=4
 
 ###### begin command line parsing #####
 reboot=true
-while [[ $1 == -* ]]; do
+temp=$(getopt -l opt o "$@") || usage 1
+eval set -- "$temp"
+while true; do
     case $1 in
         -d) set -x; shift ;;
         -r) reboot=false; shift ;;
-        --) break ;;
+        -h|--help) usage ;;
+        --) shift; break ;;
+        *) echo "$0: Internal error!" ; exit 1 ;;
     esac
 done
 
@@ -27,7 +61,8 @@ distro=$1
 
 if [[ ! $distro ]]; then
     echo "available distros:"
-    btrfs subvolume list /boot | sed -rn 's/^.*boot_(.*)/\1/p'
+    cur=$(btrfs subvol show /boot| sed -rn 's/^.*Name:\s*(\S*).*/\1/p')
+    btrfs subvolume list /boot | awk '{print $9}' | sed "s/$cur/$cur (current)/"
     exit 0
 fi
 
@@ -59,6 +94,13 @@ boot_disk=${boot_dev%%[0-9]*}
 # https://www.gnu.org/software/grub/manual/html_node/Device-map.html
 e grub-bios-setup -d $mount_point/grub/i386-pc -s -m $mount_point/grub/device.map $boot_disk
 
+# todo, mount_point needs subvolid=0
+
+e umount $mount_point
+
+e mount $boot_disk$grub_extn $mount_point
+e grub-editenv $mount_point/grubenv set last_boot=/boot_$distro
+e grub-editenv $mount_point/grubenv set did_fai_check=true
 e umount $mount_point
 e rmdir $mount_point