librc-depend.c: dynamically generate services for multiplexed services.dynamic-deptree

when generating back references, attempt to instantiate missing
services.

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>

1 files changed, 102 insertions, 78 deletions

diff --git a/sh/gendepends.sh.in b/sh/gendepends.sh.in
index 8ce1c87f..85fb48c1 100644
--- a/sh/gendepends.sh.in
+++ b/sh/gendepends.sh.in
@@ -53,88 +53,112 @@ depend() {
 	:
 }
 
-_dirs="
-	@SYSCONFDIR@/init.d
-	@PKG_PREFIX@/etc/init.d
-	@LOCAL_PREFIX@/etc/init.d
-"
+gendepend() {
+	RC_SERVICE="$1"
+	[ -x "$RC_SERVICE" -a -f "$RC_SERVICE" ] || continue
+
+	# Only generate dependencies for OpenRC scripts
+	read one two three <"$RC_SERVICE"
+	case "$one" in
+		\#*/openrc-run) ;;
+		\#*/runscript) ;;
+		\#!)
+			case "$two" in
+				*/openrc-run) ;;
+				*/runscript) ;;
+				*)
+					continue
+					;;
+			esac
+			;;
+		*)
+			continue
+			;;
+	esac
+	unset one two three
+
+	RC_SVCNAME=${RC_SERVICE##*/}; export RC_SVCNAME
+
+	# Compat
+	SVCNAME=$RC_SVCNAME; export SVCNAME
+
+	(
+	# Save stdout in fd3, then remap it to stderr
+	exec 3>&1 1>&2
+
+	_rc_c=${RC_SVCNAME%%.*}
+	_conf_d="${RC_SYSCONF_DIR}/conf.d"
+	if [ -n "$_rc_c" -a "$_rc_c" != "$RC_SVCNAME" ]; then
+		if [ -e "$_conf_d/$_rc_c" ]; then
+			. "$_conf_d/$_rc_c"
+		fi
+	fi
+	unset _rc_c
+
+	if [ -e "$_conf_d/$RC_SVCNAME" ]; then
+		. "$_conf_d/$RC_SVCNAME"
+	fi
+
+	[ -e @SYSCONFDIR@/rc.conf ] && . @SYSCONFDIR@/rc.conf
+	if [ -d "@SYSCONFDIR@/rc.conf.d" ]; then
+		for _f in "@SYSCONFDIR@"/rc.conf.d/*.conf; do
+			[ -e "$_f" ] && . "$_f"
+		done
+	fi
+
+	if . "$RC_SERVICE"; then
+		echo "$RC_SVCNAME" >&3
+		_depend
+	fi
+	)
+}
 
-if yesno "$RC_USER_SERVICES"; then
+do_all() {
 	_dirs="
-		@SYSCONFDIR@/user.d/init.d
-		${XDG_CONFIG_HOME:-${HOME}/.config}/openrc/init.d
+		@SYSCONFDIR@/init.d
+		@PKG_PREFIX@/etc/init.d
+		@LOCAL_PREFIX@/etc/init.d
 	"
-fi
 
-_done_dirs=
-for _dir in ${_dirs}
-do
-	[ -d "$_dir" ] || continue
-
-	# Don't do the same dir twice
-	for _d in $_done_dirs; do
-		[ "$_d" = "$_dir" ] && continue 2
+	if yesno "$RC_USER_SERVICES"; then
+		_dirs="
+			@SYSCONFDIR@/user.d/init.d
+			${XDG_CONFIG_HOME:-${HOME}/.config}/openrc/init.d
+		"
+	fi
+
+	_done_dirs=
+	for _dir in ${_dirs}
+	do
+		[ -d "$_dir" ] || continue
+
+		# Don't do the same dir twice
+		for _d in $_done_dirs; do
+			[ "$_d" = "$_dir" ] && continue 2
+		done
+		unset _d
+		_done_dirs="$_done_dirs $_dir"
+
+		cd "$_dir"
+		RC_SYSCONF_DIR="$_dir"
+		for _service in *; do
+			gendepend "$_dir/$_service"
+		done
 	done
-	unset _d
-	_done_dirs="$_done_dirs $_dir"
-
-	cd "$_dir"
-	for RC_SERVICE in *; do
-		[ -x "$RC_SERVICE" -a -f "$RC_SERVICE" ] || continue
-
-		# Only generate dependencies for OpenRC scripts
-		read one two three <"$RC_SERVICE"
-		case "$one" in
-			\#*/openrc-run) ;;
-			\#*/runscript) ;;
-			\#!)
-				case "$two" in
-					*/openrc-run) ;;
-					*/runscript) ;;
-					*)
-						continue
-						;;
-				esac
-				;;
-			*)
-				continue
-				;;
-		esac
-		unset one two three
-
-		RC_SVCNAME=${RC_SERVICE##*/} ; export RC_SVCNAME
-
-		# Compat
-		SVCNAME=$RC_SVCNAME ; export SVCNAME
-
-		(
-		# Save stdout in fd3, then remap it to stderr
-		exec 3>&1 1>&2
-
-		_rc_c=${RC_SVCNAME%%.*}
-		if [ -n "$_rc_c" -a "$_rc_c" != "$RC_SVCNAME" ]; then
-			if [ -e "$_dir/../conf.d/$_rc_c" ]; then
-				. "$_dir/../conf.d/$_rc_c"
-			fi
-		fi
-		unset _rc_c
-
-		if [ -e "$_dir/../conf.d/$RC_SVCNAME" ]; then
-			. "$_dir/../conf.d/$RC_SVCNAME"
-		fi
-
-		[ -e @SYSCONFDIR@/rc.conf ] && . @SYSCONFDIR@/rc.conf
-		if [ -d "@SYSCONFDIR@/rc.conf.d" ]; then
-			for _f in "@SYSCONFDIR@"/rc.conf.d/*.conf; do
-				[ -e "$_f" ] && . "$_f"
-			done
-		fi
+	unset _dirs
+}
 
-		if . "$_dir/$RC_SVCNAME"; then
-			echo "$RC_SVCNAME" >&3
-			_depend
-		fi
-		)
+do_svcs() {
+	for _service in $@; do
+		RC_SYSCONF_DIR="$(dirname $(realpath "$_service"))/.."
+		[ -d "${RC_SYSCONF_DIR}" ] || return 1
+		cd "${RC_SYSCONF_DIR}" || return 1
+		gendepend "$_service"
 	done
-done
-unset _dirs
+}
+
+if [ $# -gt 0 ]; then
+	do_svcs $@
+else
+	do_all
+fi