X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=fai%2Fconfig%2Ffiles%2Fboot%2Fchboot%2FDEFAULT;h=adfbe1c31d71661d685b64abca31137f6bc0617a;hb=HEAD;hp=4dda460dbae5d3117860495dc940159b8ccdfe54;hpb=47b51938ae090a2717cb2ec3f9e547a76e7b2ae7;p=automated-distro-installer

diff --git a/fai/config/files/boot/chboot/DEFAULT b/fai/config/files/boot/chboot/DEFAULT
index 4dda460..6b0e964 100755
--- a/fai/config/files/boot/chboot/DEFAULT
+++ b/fai/config/files/boot/chboot/DEFAULT
@@ -16,32 +16,35 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
+
 
-[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
+if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
+shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
+set -eE -o pipefail
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR
 
 usage() {
-    cat <<EOF
-Usage: ${0##*/} [OPTIONS] DISTRO_NAME
+  cat <<'EOF'
+Usage: chboot [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.
+For example, boot_debianjessie.
 
 For a system without libreboot, which is failing completely to
 boot on one distro, here is how I did a chboot for it:
 # arch-pxe had been run previously
-pxe-server treetowl arch
-# reboot treetowl into arch live env
+pxe-server some_hostname arch
+# reboot some_hostname into arch live env
 pxe-server # disable pxe server
-ssh root@treetowl
+ssh root@some_hostname
 lsblk # identify boot dev. if boot dev is a raid, this could be repeated on all boot devs.
 mount /dev/sdd3 /mnt
-mount_point=/mnt/boot_debiantesting # the subvol i want to chboot to
+mp=/mnt/boot_debiantesting # the subvol i want to chboot to
 boot_disk=/dev/sdd
-grub-bios-setup -d $mount_point/grub/i386-pc -s -m $mount_point/grub/device.map $boot_disk
+grub-bios-setup -d $mp/grub/i386-pc -s -m $mp/grub/device.map $boot_disk
 reboot
 
 todo: figure out if it's possible to make a multi-distro grub like I have with libreboot
@@ -53,34 +56,38 @@ for non-libreboot systems
 
 Note: Uses GNU getopt options parsing style
 EOF
-    exit $1
+  exit $1
 }
 
 
-grub_extn=4
 
 ###### begin command line parsing #####
 reboot=true
 temp=$(getopt -l help hdr "$@") || usage 1
 eval set -- "$temp"
 while true; do
-    case $1 in
-        -d) set -x; shift ;;
-        -r) reboot=false; shift ;;
-        -h|--help) usage ;;
-        --) shift; break ;;
-        *) echo "$0: Internal error!" ; exit 1 ;;
-    esac
+  case $1 in
+    -d) set -x; shift ;;
+    -r) reboot=false; shift ;;
+    -h|--help) usage 0 ;;
+    --) shift; break ;;
+    *) echo "$0: Internal error!" ; exit 1 ;;
+  esac
 done
 
 
 distro=$1
 
+mnt=/boot
+if ! mountpoint $mnt &>/dev/null; then
+  mnt=/
+fi
+
 if [[ ! $distro ]]; then
-    echo "available distros:"
-    cur=$(btrfs subvol show /boot| sed -rn 's/^.*Name:\s*(\S*).*/\1/p')
-    btrfs subvolume list /boot | awk '{print $9}' | sed "s/$cur/$cur (current)/"
-    exit 0
+  echo "available distros:"
+  cur=$(btrfs subvol show $mnt| sed -rn 's/^.*Name:\s*(\S*).*/\1/p')
+  btrfs subvolume list $mnt | awk '{print $9}' | sed "s/$cur/$cur (current)/"
+  exit 0
 fi
 
 ###### end command line parsing #####
@@ -88,38 +95,45 @@ fi
 
 #### begin initial error checking #####
 
-if ! btrfs subvolume list /boot | grep "_$distro$" &>/dev/null; then
-    echo "$0: error: _$distro$ not found in btrfs subvolume list /boot:"
-    btrfs subvolume list /boot
-    exit 1
+if ! btrfs subvolume list $mnt | grep "$distro$" &>/dev/null; then
+  echo "$0: error: $distro not found in btrfs subvolume list $mnt:"
+  btrfs subvolume list $mnt
+  exit 1
 fi
 
 #### end initial error checking #####
 
 e() { echo "$@"; "$@"; }
 
-boot_dev=$(mount | sed -rn "s#^(\S+) on /boot .*#\1#p")
+for boot_dev in $(btrfs fil show $mnt | sed -nr 's#.*path\s+(\S+)$#\1#p'); do
 
-mount_point=$(mktemp -d)
+  mount_point=$(mktemp -d)
 
-e mount -o subvol=boot_$distro $boot_dev $mount_point
+  e mount -o subvol=$distro $boot_dev $mount_point
 
-boot_disk=${boot_dev%%[0-9]*}
+  boot_disk=${boot_dev%%[0-9]*}
 
-# arch doesn't have $mount_point/grub/device.map, accoring to the grub manual,
-# it just generates one if the file doesn't exist.
-# 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
+  # arch doesn't have $mount_point/grub/device.map, accoring to the grub manual,
+  # it just generates one if the file doesn't exist.
+  # 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
+  e umount $mount_point
+done
 
-e umount $mount_point
+if [[ $(blockdev --getsize64 ${boot_disk}4) == 8388608 ]]; then
+  # old partition scheme
+  grub_dev=${boot_disk}4
+elif [[ $(blockdev --getsize64 ${boot_disk}5) == 8388608 ]]; then
+  grub_dev=${boot_disk}5
+else
+  grub_dev=${boot_disk}7
+fi
 
-e mount $boot_disk$grub_extn $mount_point
-e grub-editenv $mount_point/grubenv set last_boot=/boot_$distro
+e mount $grub_dev $mount_point
+e grub-editenv $mount_point/grubenv set last_boot=/$distro
 e grub-editenv $mount_point/grubenv set did_fai_check=true
 e umount $mount_point
-e rmdir $mount_point
-
 if $reboot; then
-    touch /tmp/keyscript-off
-    reboot now
+  touch /tmp/keyscript-off
+  reboot now
 fi