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-rw-r--r--src/machine-id-setup/machine-id-setup-main.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/src/machine-id-setup/machine-id-setup-main.c b/src/machine-id-setup/machine-id-setup-main.c
new file mode 100644
index 0000000..b595b2a
--- /dev/null
+++ b/src/machine-id-setup/machine-id-setup-main.c
@@ -0,0 +1,182 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "alloc-util.h"
+#include "dissect-image.h"
+#include "id128-util.h"
+#include "log.h"
+#include "machine-id-setup.h"
+#include "main-func.h"
+#include "mount-util.h"
+#include "parse-argument.h"
+#include "path-util.h"
+#include "pretty-print.h"
+#include "terminal-util.h"
+#include "util.h"
+
+static char *arg_root = NULL;
+static char *arg_image = NULL;
+static bool arg_commit = false;
+static bool arg_print = false;
+
+STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
+
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-machine-id-setup", "1", &link);
+ if (r < 0)
+ return log_oom();
+
+ printf("%s [OPTIONS...]\n"
+ "\n%sInitialize /etc/machine-id from a random source.%s\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --root=PATH Operate relative to root path\n"
+ " --image=PATH Operate relative to image file\n"
+ " --commit Commit transient ID\n"
+ " --print Print used machine ID\n"
+ "\nSee the %s for details.\n",
+ program_invocation_short_name,
+ ansi_highlight(),
+ ansi_normal(),
+ link);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_ROOT,
+ ARG_IMAGE,
+ 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 },
+ { "image", required_argument, NULL, ARG_IMAGE },
+ { "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, "h", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ return version();
+
+ case ARG_ROOT:
+ r = parse_path_argument(optarg, true, &arg_root);
+ if (r < 0)
+ return r;
+ break;
+
+ case ARG_IMAGE:
+ r = parse_path_argument(optarg, false, &arg_image);
+ 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();
+ }
+
+ if (optind < argc)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Extraneous arguments");
+
+ if (arg_image && arg_root)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
+
+ return 1;
+}
+
+static int run(int argc, char *argv[]) {
+ _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
+ _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL;
+ sd_id128_t id;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ if (arg_image) {
+ assert(!arg_root);
+
+ r = mount_image_privately_interactively(
+ arg_image,
+ DISSECT_IMAGE_REQUIRE_ROOT |
+ DISSECT_IMAGE_VALIDATE_OS |
+ DISSECT_IMAGE_RELAX_VAR_CHECK |
+ DISSECT_IMAGE_FSCK |
+ DISSECT_IMAGE_GROWFS,
+ &unlink_dir,
+ &loop_device);
+ if (r < 0)
+ return r;
+
+ arg_root = strdup(unlink_dir);
+ if (!arg_root)
+ return log_oom();
+ }
+
+ if (arg_commit) {
+ const char *etc_machine_id;
+
+ r = machine_id_commit(arg_root);
+ if (r < 0)
+ return r;
+
+ etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
+ r = id128_read(etc_machine_id, ID128_FORMAT_PLAIN, &id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to read machine ID back: %m");
+ } else {
+ r = machine_id_setup(arg_root, false, SD_ID128_NULL, &id);
+ if (r < 0)
+ return r;
+ }
+
+ if (arg_print)
+ puts(SD_ID128_TO_STRING(id));
+
+ return 0;
+}
+
+DEFINE_MAIN_FUNCTION(run);