migrate fully to meson build system

- drop old build system
- move shared include and source files to common directory
- drop "rc-" prefix from shared include and source files
- move executable-specific code to individual directories under src
- adjust top-level .gitignore file for new build system

This closes #489.

src/rc-service/meson.build

@@ -0,0 +1,7 @@
+executable('rc-service',
+  ['rc-service.c', misc_c, usage_c, version_h],
+  c_args : cc_branding_flags,
+  link_with: [libeinfo, librc],
+  include_directories: [incdir, einfo_incdir, rc_incdir],
+  install: true,
+  install_dir: sbindir)

src/rc-service/rc-service.c

@@ -0,0 +1,171 @@
+/*
+ * rc-service.c
+ * Finds all OpenRC services
+ */
+
+/*
+ * Copyright (c) 2008-2015 The OpenRC Authors.
+ * See the Authors file at the top-level directory of this distribution and
+ * https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
+ *
+ * This file is part of OpenRC. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
+ * This file may not be copied, modified, propagated, or distributed
+ *    except according to the terms contained in the LICENSE file.
+ */
+
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "einfo.h"
+#include "queue.h"
+#include "rc.h"
+#include "misc.h"
+#include "_usage.h"
+
+const char *applet = NULL;
+const char *extraopts = NULL;
+const char getoptstring[] = "cdDe:ilr:INsSZ" getoptstring_COMMON;
+const struct option longopts[] = {
+	{ "debug",     0, NULL, 'd' },
+	{ "nodeps",     0, NULL, 'D' },
+	{ "exists",   1, NULL, 'e' },
+	{ "ifcrashed", 0, NULL, 'c' },
+	{ "ifexists", 0, NULL, 'i' },
+	{ "ifinactive", 0, NULL, 'I' },
+	{ "ifnotstarted", 0, NULL, 'N' },
+	{ "ifstarted", 0, NULL, 's' },
+	{ "ifstopped", 0, NULL, 'S' },
+	{ "list",     0, NULL, 'l' },
+	{ "resolve",  1, NULL, 'r' },
+	{ "dry-run",     0, NULL, 'Z' },
+	longopts_COMMON
+};
+const char * const longopts_help[] = {
+	"set xtrace when running the command",
+	"ignore dependencies",
+	"tests if the service exists or not",
+	"if the service is crashed run the command",
+	"if the service exists run the command",
+	"if the service is inactive run the command",
+	"if the service is not started run the command",
+	"if the service is started run the command",
+	"if the service is stopped run the command",
+	"list all available services",
+	"resolve the service name to an init script",
+	"dry run (show what would happen)",
+	longopts_help_COMMON
+};
+const char *usagestring = ""							\
+	"Usage: rc-service [options] [-i] <service> <cmd>...\n"		\
+	"   or: rc-service [options] -e <service>\n"			\
+	"   or: rc-service [options] -l\n"				\
+	"   or: rc-service [options] -r <service>";
+
+int main(int argc, char **argv)
+{
+	int opt;
+	char *service;
+	RC_STRINGLIST *list;
+	RC_STRING *s;
+	RC_SERVICE state;
+	bool if_crashed = false;
+	bool if_exists = false;
+	bool if_inactive = false;
+	bool if_notstarted = false;
+	bool if_started = false;
+	bool if_stopped = false;
+
+	applet = basename_c(argv[0]);
+	/* Ensure that we are only quiet when explicitly told to be */
+	unsetenv("EINFO_QUIET");
+
+	while ((opt = getopt_long(argc, argv, getoptstring,
+		    longopts, (int *) 0)) != -1)
+	{
+		switch (opt) {
+		case 'd':
+			setenv("RC_DEBUG", "yes", 1);
+			break;
+		case 'D':
+			setenv("RC_NODEPS", "yes", 1);
+			break;
+		case 'e':
+			service = rc_service_resolve(optarg);
+			opt = service ? EXIT_SUCCESS : EXIT_FAILURE;
+			free(service);
+			return opt;
+			/* NOTREACHED */
+		case 'c':
+			if_crashed = true;
+			break;
+		case 'i':
+			if_exists = true;
+			break;
+		case 'I':
+			if_inactive = true;
+			break;
+		case 'N':
+			if_notstarted = true;
+			break;
+		case 'l':
+			list = rc_services_in_runlevel(NULL);
+			if (TAILQ_FIRST(list) == NULL)
+				return EXIT_FAILURE;
+			rc_stringlist_sort(&list);
+			TAILQ_FOREACH(s, list, entries)
+			    printf("%s\n", s->value);
+			rc_stringlist_free(list);
+			return EXIT_SUCCESS;
+			/* NOTREACHED */
+		case 'r':
+			service = rc_service_resolve(optarg);
+			if (service == NULL)
+				return EXIT_FAILURE;
+			printf("%s\n", service);
+			free(service);
+			return EXIT_SUCCESS;
+			/* NOTREACHED */
+		case 's':
+			if_started = true;
+			break;
+		case 'S':
+			if_stopped = true;
+			break;
+		case 'Z':
+			setenv("IN_DRYRUN", "yes", 1);
+			break;
+
+		case_RC_COMMON_GETOPT
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	if (*argv == NULL)
+		eerrorx("%s: you need to specify a service", applet);
+	if ((service = rc_service_resolve(*argv)) == NULL) {
+		if (if_exists)
+			return 0;
+		eerrorx("%s: service `%s' does not exist", applet, *argv);
+	}
+	state = rc_service_state(*argv);
+	if (if_crashed &&  !(rc_service_daemons_crashed(*argv) && errno != EACCES))
+		return 0;
+	if (if_inactive && !(state & RC_SERVICE_INACTIVE))
+		return 0;
+	if (if_notstarted && (state & RC_SERVICE_STARTED))
+		return 0;
+	if (if_started && !(state & RC_SERVICE_STARTED))
+		return 0;
+	if (if_stopped && !(state & RC_SERVICE_STOPPED))
+		return 0;
+	*argv = service;
+	execv(*argv, argv);
+	eerrorx("%s: %s", applet, strerror(errno));
+	/* NOTREACHED */
+}