base-files: add support for staged sysupgrades from failsafe mode

[openwrt/openwrt.git] / package / base-files / files / sbin / sysupgrade

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 215f482352d239457825b8071e7de92ba801326b..809e789f9f436aaeb47a906d46c94d5952583e5a 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -1,4 +1,5 @@
 #!/bin/sh
+
 . /lib/functions.sh
 . /lib/functions/system.sh
 
@@ -10,7 +11,7 @@ export INTERACTIVE=0
 export VERBOSE=1
 export SAVE_CONFIG=1
 export SAVE_OVERLAY=0
-export DELAY=
+export SAVE_PARTITIONS=1
 export CONF_IMAGE=
 export CONF_BACKUP_LIST=0
 export CONF_BACKUP=
@@ -24,11 +25,11 @@ export TEST=0
 while [ -n "$1" ]; do
        case "$1" in
                -i) export INTERACTIVE=1;;
-               -d) export DELAY="$2"; shift;;
                -v) export VERBOSE="$(($VERBOSE + 1))";;
                -q) export VERBOSE="$(($VERBOSE - 1))";;
                -n) export SAVE_CONFIG=0;;
                -c) export SAVE_OVERLAY=1;;
+               -p) export SAVE_PARTITIONS=0;;
                -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
                -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
                -l|--list-backup) export CONF_BACKUP_LIST=1; break;;
@@ -48,10 +49,9 @@ done
 export CONFFILES=/tmp/sysupgrade.conffiles
 export CONF_TAR=/tmp/sysupgrade.tgz
 
-export ARGV="$*"
-export ARGC="$#"
+IMAGE="$1"
 
-[ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
+[ -z "$IMAGE" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
        cat <<EOF
 Usage: $0 [<upgrade-option>...] <image file or URL>
        $0 [-q] [-i] <backup-command> <file>
@@ -62,6 +62,7 @@ upgrade-option:
        -i           interactive mode
        -c           attempt to preserve all changed files in /etc/
        -n           do not save configuration over reflash
+       -p           do not attempt to restore the partition table after flash.
        -T | --test
                     Verify image and config .tar.gz but do not actually flash.
        -F | --force
@@ -87,7 +88,7 @@ EOF
        exit 1
 }
 
-[ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
+[ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
        cat <<-EOF
                -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
                Do not specify both -b|-r and a firmware image.
@@ -115,6 +116,7 @@ add_overlayfiles() {
                local overlaydir="/overlay"
        fi
        find $overlaydir/etc/ -type f -o -type l | sed \
+               -e 's,^/overlay\/upper/,/,' \
                -e 's,^/overlay/,/,' \
                -e '\,/META_[a-zA-Z0-9]*$,d' \
                -e '\,/functions.sh$,d' \
@@ -124,21 +126,21 @@ add_overlayfiles() {
 }
 
 # hooks
-sysupgrade_image_check="platform_check_image"
+sysupgrade_image_check="fwtool_check_image platform_check_image"
+sysupgrade_pre_upgrade="fwtool_pre_upgrade"
 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
        sysupgrade_init_conffiles="add_uci_conffiles" || \
        sysupgrade_init_conffiles="add_overlayfiles"
 
 include /lib/upgrade
 
-[ "$1" = "nand" ] && nand_upgrade_stage2 $@
-
 do_save_conffiles() {
        local conf_tar="${1:-$CONF_TAR}"
 
        [ -z "$(rootfs_type)" ] && {
                echo "Cannot save config while running from ramdisk."
                ask_bool 0 "Abort" && exit
+               rm -f "$conf_tar"
                return 0
        }
        run_hooks "$CONFFILES" $sysupgrade_init_conffiles
@@ -179,8 +181,33 @@ type platform_check_image >/dev/null 2>/dev/null || {
        exit 1
 }
 
+case "$IMAGE" in
+       http://*)
+               wget -O/tmp/sysupgrade.img "$IMAGE"
+               IMAGE=/tmp/sysupgrade.img
+               ;;
+esac
+
+IMAGE="$(readlink -f "$IMAGE")"
+
+case "$IMAGE" in
+       '')
+               echo "Image file not found."
+               exit 1
+               ;;
+       /tmp/*) ;;
+       *)
+               v "Image not in /tmp, copying..."
+               cp -f "$IMAGE" /tmp/sysupgrade.img
+               IMAGE=/tmp/sysupgrade.img
+               ;;
+esac
+
+export ARGV="$IMAGE"
+export ARGC=1
+
 for check in $sysupgrade_image_check; do
-       ( eval "$check \"\$ARGV\"" ) || {
+       ( $check "$IMAGE" ) || {
                if [ $FORCE -eq 1 ]; then
                        echo "Image check '$check' failed but --force given - will update anyway!"
                        break
@@ -206,6 +233,7 @@ elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
        [ $TEST -eq 1 ] || do_save_conffiles
        export SAVE_CONFIG=1
 else
+       [ $TEST -eq 1 ] || rm -f "$CONF_TAR"
        export SAVE_CONFIG=0
 fi
 
@@ -213,20 +241,26 @@ if [ $TEST -eq 1 ]; then
        exit 0
 fi
 
+if [ $SAVE_PARTITIONS -eq 0 ]; then
+       touch /tmp/sysupgrade.always.overwrite.bootdisk.partmap
+else
+       rm -f /tmp/sysupgrade.always.overwrite.bootdisk.partmap
+fi
+
 run_hooks "" $sysupgrade_pre_upgrade
 
-ubus call system upgrade
-touch /tmp/sysupgrade
+install_bin /sbin/upgraded
+v "Commencing upgrade. All shell sessions will be closed now."
 
-if [ ! -f /tmp/failsafe ] ; then
-       kill_remaining TERM
-       sleep 3
-       kill_remaining KILL
-fi
+COMMAND='. /lib/functions.sh; include /lib/upgrade; do_upgrade_stage2'
 
-if [ -n "$(rootfs_type)" ]; then
-       v "Switching to ramdisk..."
-       run_ramfs '. /lib/functions.sh; include /lib/upgrade; do_upgrade'
+if [ -n "$FAILSAFE" ]; then
+       printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp/sysupgrade
+       lock -u /tmp/.failsafe
 else
-       do_upgrade
+       ubus call system sysupgrade "{
+               \"prefix\": $(json_string "$RAM_ROOT"),
+               \"path\": $(json_string "$IMAGE"),
+               \"command\": $(json_string "$COMMAND")
+       }"
 fi