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-rw-r--r--src/systemd-machine-id-setup/machine-id-setup-main.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/systemd-machine-id-setup/machine-id-setup-main.c b/src/systemd-machine-id-setup/machine-id-setup-main.c
new file mode 100644
index 0000000000..deb0656d2f
--- /dev/null
+++ b/src/systemd-machine-id-setup/machine-id-setup-main.c
@@ -0,0 +1,143 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "systemd-basic/log.h"
+#include "systemd-basic/path-util.h"
+#include "systemd-basic/util.h"
+
+#include "machine-id-setup.h"
+
+static char *arg_root = NULL;
+static bool arg_commit = false;
+static bool arg_print = false;
+
+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"
+ " --commit Commit transient ID\n"
+ " --print Print used machine ID\n"
+ , program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_ROOT,
+ ARG_COMMIT,
+ ARG_PRINT,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "root", required_argument, NULL, ARG_ROOT },
+ { "commit", no_argument, NULL, ARG_COMMIT },
+ { "print", no_argument, NULL, ARG_PRINT },
+ {}
+ };
+
+ int c, r;
+
+ 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:
+ return version();
+
+ case ARG_ROOT:
+ r = parse_path_argument_and_warn(optarg, true, &arg_root);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_COMMIT:
+ arg_commit = true;
+ break;
+
+ case ARG_PRINT:
+ arg_print = true;
+ 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[]) {
+ char buf[SD_ID128_STRING_MAX];
+ sd_id128_t id;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ if (arg_commit) {
+ r = machine_id_commit(arg_root);
+ if (r < 0)
+ goto finish;
+
+ r = sd_id128_get_machine(&id);
+ if (r < 0) {
+ log_error_errno(r, "Failed to read machine ID back: %m");
+ goto finish;
+ }
+ } else {
+ r = machine_id_setup(arg_root, SD_ID128_NULL, &id);
+ if (r < 0)
+ goto finish;
+ }
+
+ if (arg_print)
+ puts(sd_id128_to_string(id, buf));
+
+finish:
+ free(arg_root);
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}