update-kernel: new options --hostkeys and --repositories-file

to simplify creation of bootable images from external repositries
and with developer signing keys.

update-kernel.in

@@ -20,6 +20,8 @@ BUILDDIR=
 FLAVOR=
 MNTDIR=
 PACKAGES=
+MKINITFS_ARGS=
+REPOSITORIES_FILE=/etc/apk/repositories
 SIGNALS="HUP INT TERM"
 TMPDIR=
 features=
@@ -44,14 +46,16 @@ Options: -a|--arch <arch>        Install kernel for specified architecture
          -F|--feature <feature>  Enable initfs feature
          -p|--package <package>  Additional module or firmware package
          -v|--verbose            Verbose output
+         -K|--hostkeys           Include host keys in initramfs
+         --repositories-file <f> apk repositories file
 
 EOF
     exit $1
 }
 
 QUIET_OPT="--quiet"
-OPTS=$(getopt -l arch:,build-dir:,flavor:,feature:,help,package:,verbose \
-	      -n $SCRIPT -o a:b:f:F:hp:v -- "$@") || usage 1
+OPTS=$(getopt -l arch:,build-dir:,flavor:,feature:,help,package:,verbose,hostkeys,repositories-file: \
+	      -n $SCRIPT -o a:b:f:F:hp:vK -- "$@") || usage 1
 eval set -- "$OPTS"
 while :; do
     case "$1" in
@@ -82,6 +86,13 @@ while :; do
 	-v|--verbose)
 	    QUIET_OPT=
 	    ;;
+	-K|--hostkeys)
+	    MKINITFS_ARGS="$MKINITFS_ARGS -K"
+	    ;;
+        --repositories-file)
+	    shift
+	    REPOSITORIES_FILE=$1
+	    ;;
 	--)
 	    break
 	    ;;
@@ -180,7 +191,7 @@ _apk() {
 
     $wrapper apk $cmd $QUIET_OPT -p $ROOT --arch "$ARCH" \
 	--keys-dir /etc/apk/keys \
-	--repositories-file /etc/apk/repositories $*
+	--repositories-file "$REPOSITORIES_FILE" $*
 }
 
 extra_pkgs() {
@@ -237,7 +248,7 @@ find $ROOT/lib/modules -type f -name "*.ko" | xargs modinfo -F firmware | sort -
 done
 _exec mksquashfs $MODLOOP "$STAGING/$MODIMG" -comp xz
 
-_exec mkinitfs -q -b $ROOT -F "$features base squashfs" \
+_exec mkinitfs $MKINITFS_ARGS -q -b $ROOT -F "$features base squashfs" \
     -o "$STAGING/initramfs-$FLAVOR" "$KVER"
 
 for file in System.map config vmlinuz; do