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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
commit | 19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch) | |
tree | d59b9989ce55ed23693e80974d94c856f1c2c8b1 /src/machine-id-setup/machine-id-setup-main.c | |
parent | Initial commit. (diff) | |
download | systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip |
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/machine-id-setup/machine-id-setup-main.c')
-rw-r--r-- | src/machine-id-setup/machine-id-setup-main.c | 142 |
1 files changed, 142 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..1b575d7 --- /dev/null +++ b/src/machine-id-setup/machine-id-setup-main.c @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <errno.h> +#include <getopt.h> +#include <stdio.h> +#include <stdlib.h> + +#include "alloc-util.h" +#include "id128-util.h" +#include "log.h" +#include "machine-id-setup.h" +#include "main-func.h" +#include "path-util.h" +#include "pretty-print.h" +#include "util.h" + +static char *arg_root = NULL; +static bool arg_commit = false; +static bool arg_print = false; + +STATIC_DESTRUCTOR_REGISTER(arg_root, 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" + "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" + "\nSee the %s for details.\n" + , program_invocation_short_name + , link + ); + + return 0; +} + +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': + return help(); + + 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) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Extraneous arguments"); + + return 1; +} + +static int run(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) + return r; + + 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_PLAIN, &id); + if (r < 0) + return log_error_errno(r, "Failed to read machine ID back: %m"); + } else { + r = machine_id_setup(arg_root, SD_ID128_NULL, &id); + if (r < 0) + return r; + } + + if (arg_print) + puts(sd_id128_to_string(id, buf)); + + return 0; +} + +DEFINE_MAIN_FUNCTION(run); |