#include <unistd.h>
#include <stdlib.h>
+#include <stdio.h>
+#include <getopt.h>
+#include <errno.h>
#include "machine-id-setup.h"
#include "log.h"
+#include "build.h"
+
+static const char *arg_root = "";
+
+static void help(void) {
+ printf("%s [OPTIONS...]\n\n"
+ "Initialize /etc/machine-id from a random source.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --root=ROOT Filesystem root\n",
+ program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_ROOT,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "root", required_argument, NULL, ARG_ROOT },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_ROOT:
+ arg_root = optarg;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ if (optind < argc) {
+ log_error("Extraneous arguments");
+ return -EINVAL;
+ }
+
+ return 1;
+}
int main(int argc, char *argv[]) {
+ int r;
- log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
- return machine_id_setup() < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+
+ return machine_id_setup(arg_root) < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}