fixup! Add tix-upgrade(8).

tix/tix-upgrade

@@ -19,8 +19,9 @@
 set -e
 
 cachedir=""
+cancel=false
 clean=false
-collection=""
+collection=/
 download_only=false
 fetch_options=
 ports_only=false
@@ -50,6 +51,7 @@ for argument do
   -w) wait=-w ;;
   --cachedir=*) cachedir=$parameter ;;
   --cachedir) previous_option=cachedir ;;
+  --cancel) cancel=true ;;
   --clean) clean=true ;;
   --collection=*) collection=$parameter ;;
   --collection) previous_option=collection ;;
@@ -74,36 +76,47 @@ if test -n "$previous_option"; then
   exit 1
 fi
 
-# TODO: Reject additional operands.
-
-if [ -z "$collection" ]; then
-  collection="$sysroot"
+if [ 0 -lt $# ]; then
+  echo "$0: Unexpected extra operand: $1" >&2
+  exit 1
 fi
 
-if [ -n "$collection" ]; then
-  collection=$(cd "$collection" && pwd)
-fi
+get_conf() {
+  sed -E -e 's/([a-zA-Z0-9_]+) *? *= */\U\1=/' \
+         -e 's/=yes$/=true/' -e 's/no$/=false/' "$3" | \
+  tix-vars -d "$2" - "$4"
+}
+
+collection=$(cd "$collection" && pwd)
 
 if ! $upgrade_ports && ! $upgrade_system; then
-  # TODO: Ability to set default in /etc/upgrade.conf.
   upgrade_ports=true
   upgrade_system=true
+  if [ -e "$collection/etc/upgrade.conf" ]; then
+    upgrade_ports=$(get_conf -d true "$collection/etc/upgrade.conf" PORTS)
+    upgrade_system=$(get_conf -d true "$collection/etc/upgrade.conf" SYSTEM)
+  fi
 fi
 
-# Update only ports if this isn't a whole system installation.
+# If this isn't a system installation, only upgrade the ports.
 if [ ! -e "$collection/tix/manifest/system" ]; then
   upgrade_system=false
 fi
 
 if [ -z "$cachedir" ]; then
-  cachedir="$collection/var/cache/tix"
+  cachedir="${collection%/}/var/cache/tix"
 fi
 
-if $clean; then
+if $cancel || $clean; then
   echo "Removing cache directory: $cachedir"
   rm -rf -- "$cachedir"
 fi
 
+if $cancel; then
+  sysmerge -t "$collection" --cancel
+  exit
+fi
+
 mkdir -p -- "$cachedir"
 mkdir -p -- "$cachedir/new"
 
@@ -115,11 +128,10 @@ tix-fetch $fetch_options \
 
 # If release.sig.sh or sha256sum changed, clean the cache directory of downloads
 # that were currently in progress as they might not have the right checksums.
-# TODO: This requires diff(1) in the base system! Avoid that. Get a cmp(1)!
-if ! diff -- "$cachedir/release.sh.sig" \
-             "$cachedir/new/release.sh.sig" 1>/dev/null 2>/dev/null ||
-   ! diff -- "$cachedir/sha256sum" \
-             "$cachedir/new/sha256sum" 1>/dev/null 2>/dev/null; then
+if [ ! -e "$cachedir/release.sh.sig" ] ||
+   [ ! -e "$cachedir/sha256sum" ] ||
+   ! (cd "$cachedir/new" && sha256sum release.sh.sig sha256sum) |
+     (cd "$cachedir" && sha256sum -cs); then
   rm -rf -- "$cachedir/boot"
   rm -rf -- "$cachedir/repository"
   rm -rf -- "$cachedir/sysroot"
@@ -139,7 +151,6 @@ mkdir -p "$cachedir/repository"
 if $upgrade_system; then
   # Fetch the base system initrds from the mirror.
   # TODO: What about the system source code in /src?
-  # TODO: Get the overlay initrd if it exists.
   tix-fetch $fetch_options \
             --collection="$collection" \
             --input-release-sig-file="$cachedir/release.sh.sig" \
@@ -152,7 +163,6 @@ if $upgrade_ports; then
   ports=$(LC_ALL=C ls -- "$collection/tix/tixinfo")
   # TODO: Handle new mandatory / recommended ports.
   # TODO: Handle renamed ports.
-  # TODO: This fails if the port does not exist upstream.
   mkdir -p "$cachedir/repository"
   for port in $ports; do
     # The port has a hash if if it exists upstream.