예제 #1
0
파일: journalctl.c 프로젝트: adsr/systemd
static int generate_new_id128(void) {
        sd_id128_t id;
        int r;
        unsigned i;

        r = sd_id128_randomize(&id);
        if (r < 0) {
                log_error("Failed to generate ID: %s", strerror(-r));
                return r;
        }

        printf("As string:\n"
               SD_ID128_FORMAT_STR "\n\n"
               "As UUID:\n"
               "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
               "As macro:\n"
              "#define MESSAGE_XYZ SD_ID128_MAKE(",
               SD_ID128_FORMAT_VAL(id),
               SD_ID128_FORMAT_VAL(id));

        for (i = 0; i < 16; i++)
                printf("%02x%s", id.bytes[i], i != 15 ? "," : "");

        fputs(")\n", stdout);

        return 0;
}
예제 #2
0
static void *server(void *p) {
        struct context *c = p;
        sd_bus *bus = NULL;
        sd_id128_t id;
        int r;

        c->quit = false;

        assert_se(sd_id128_randomize(&id) >= 0);

        assert_se(sd_bus_new(&bus) >= 0);
        assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
        assert_se(sd_bus_set_server(bus, 1, id) >= 0);

        assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0);
        assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0);
        assert_se(sd_bus_add_fallback_vtable(bus, NULL, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0);
        assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value", enumerator_callback, NULL) >= 0);
        assert_se(sd_bus_add_node_enumerator(bus, NULL, "/value/a", enumerator2_callback, NULL) >= 0);
        assert_se(sd_bus_add_object_manager(bus, NULL, "/value") >= 0);
        assert_se(sd_bus_add_object_manager(bus, NULL, "/value/a") >= 0);

        assert_se(sd_bus_start(bus) >= 0);

        log_error("Entering event loop on server");

        while (!c->quit) {
                log_error("Loop!");

                r = sd_bus_process(bus, NULL);
                if (r < 0) {
                        log_error_errno(r, "Failed to process requests: %m");
                        goto fail;
                }

                if (r == 0) {
                        r = sd_bus_wait(bus, (uint64_t) -1);
                        if (r < 0) {
                                log_error_errno(r, "Failed to wait: %m");
                                goto fail;
                        }

                        continue;
                }
        }

        r = 0;

fail:
        if (bus) {
                sd_bus_flush(bus);
                sd_bus_unref(bus);
        }

        return INT_TO_PTR(r);
}
예제 #3
0
static int stdout_stream_install(Server *s, int fd, StdoutStream **ret) {
        _cleanup_(stdout_stream_freep) StdoutStream *stream = NULL;
        sd_id128_t id;
        int r;

        assert(s);
        assert(fd >= 0);

        r = sd_id128_randomize(&id);
        if (r < 0)
                return log_error_errno(r, "Failed to generate stream ID: %m");

        stream = new0(StdoutStream, 1);
        if (!stream)
                return log_oom();

        stream->fd = -1;
        stream->priority = LOG_INFO;

        xsprintf(stream->id_field, "_STREAM_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(id));

        r = getpeercred(fd, &stream->ucred);
        if (r < 0)
                return log_error_errno(r, "Failed to determine peer credentials: %m");

        if (mac_selinux_use()) {
                r = getpeersec(fd, &stream->label);
                if (r < 0 && r != -EOPNOTSUPP)
                        (void) log_warning_errno(r, "Failed to determine peer security context: %m");
        }

        (void) shutdown(fd, SHUT_WR);

        r = sd_event_add_io(s->event, &stream->event_source, fd, EPOLLIN, stdout_stream_process, stream);
        if (r < 0)
                return log_error_errno(r, "Failed to add stream to event loop: %m");

        r = sd_event_source_set_priority(stream->event_source, SD_EVENT_PRIORITY_NORMAL+5);
        if (r < 0)
                return log_error_errno(r, "Failed to adjust stdout event source priority: %m");

        stream->fd = fd;

        stream->server = s;
        LIST_PREPEND(stdout_stream, s->stdout_streams, stream);
        s->n_stdout_streams++;

        if (ret)
                *ret = stream;

        stream = NULL;

        return 0;
}
예제 #4
0
int main(int argc, char *argv[]) {
        sd_id128_t id, id2;
        char t[33];
        _cleanup_free_ char *b = NULL;

        assert_se(sd_id128_randomize(&id) == 0);
        printf("random: %s\n", sd_id128_to_string(id, t));

        assert_se(sd_id128_from_string(t, &id2) == 0);
        assert_se(sd_id128_equal(id, id2));

        if (sd_booted() > 0) {
                assert_se(sd_id128_get_machine(&id) == 0);
                printf("machine: %s\n", sd_id128_to_string(id, t));

                assert_se(sd_id128_get_boot(&id) == 0);
                printf("boot: %s\n", sd_id128_to_string(id, t));
        }

        printf("waldi: %s\n", sd_id128_to_string(ID128_WALDI, t));
        assert_se(streq(t, STR_WALDI));

        assert_se(asprintf(&b, SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 32);
        printf("waldi2: %s\n", b);
        assert_se(streq(t, b));

        assert_se(sd_id128_from_string(UUID_WALDI, &id) >= 0);
        assert_se(sd_id128_equal(id, ID128_WALDI));

        assert_se(sd_id128_from_string("", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f101", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f10-", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a0b0c0d0e0f10", &id) < 0);
        assert_se(sd_id128_from_string("010203040506-0708-090a-0b0c0d0e0f10", &id) < 0);

        assert_se(id128_is_valid(STR_WALDI));
        assert_se(id128_is_valid(UUID_WALDI));
        assert_se(!id128_is_valid(""));
        assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f101"));
        assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f10-"));
        assert_se(!id128_is_valid("01020304-0506-0708-090a0b0c0d0e0f10"));
        assert_se(!id128_is_valid("010203040506-0708-090a-0b0c0d0e0f10"));

        return 0;
}
예제 #5
0
파일: run.c 프로젝트: pszewczyk/systemd
static int make_unit_name(sd_bus *bus, UnitType t, char **ret) {
    const char *unique, *id;
    char *p;
    int r;

    assert(bus);
    assert(t >= 0);
    assert(t < _UNIT_TYPE_MAX);

    r = sd_bus_get_unique_name(bus, &unique);
    if (r < 0) {
        sd_id128_t rnd;

        /* We couldn't get the unique name, which is a pretty
         * common case if we are connected to systemd
         * directly. In that case, just pick a random uuid as
         * name */

        r = sd_id128_randomize(&rnd);
        if (r < 0)
            return log_error_errno(r, "Failed to generate random run unit name: %m");

        if (asprintf(ret, "run-r" SD_ID128_FORMAT_STR ".%s", SD_ID128_FORMAT_VAL(rnd), unit_type_to_string(t)) < 0)
            return log_oom();

        return 0;
    }

    /* We managed to get the unique name, then let's use that to
     * name our transient units. */

    id = startswith(unique, ":1.");
    if (!id) {
        log_error("Unique name %s has unexpected format.", unique);
        return -EINVAL;
    }

    p = strjoin("run-u", id, ".", unit_type_to_string(t), NULL);
    if (!p)
        return log_oom();

    *ret = p;
    return 0;
}
예제 #6
0
static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_ROOT,
                ARG_LOCALE,
                ARG_LOCALE_MESSAGES,
                ARG_TIMEZONE,
                ARG_HOSTNAME,
                ARG_MACHINE_ID,
                ARG_ROOT_PASSWORD,
                ARG_ROOT_PASSWORD_FILE,
                ARG_PROMPT,
                ARG_PROMPT_LOCALE,
                ARG_PROMPT_TIMEZONE,
                ARG_PROMPT_HOSTNAME,
                ARG_PROMPT_ROOT_PASSWORD,
                ARG_COPY,
                ARG_COPY_LOCALE,
                ARG_COPY_TIMEZONE,
                ARG_COPY_ROOT_PASSWORD,
                ARG_SETUP_MACHINE_ID,
        };

        static const struct option options[] = {
                { "help",                 no_argument,       NULL, 'h'                      },
                { "version",              no_argument,       NULL, ARG_VERSION              },
                { "root",                 required_argument, NULL, ARG_ROOT                 },
                { "locale",               required_argument, NULL, ARG_LOCALE               },
                { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
                { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
                { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
                { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
                { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
                { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
                { "prompt",               no_argument,       NULL, ARG_PROMPT               },
                { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
                { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
                { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
                { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
                { "copy",                 no_argument,       NULL, ARG_COPY                 },
                { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
                { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
                { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
                { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
                {}
        };

        int r, c;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)

                switch (c) {

                case 'h':
                        help();
                        return 0;

                case ARG_VERSION:
                        return version();

                case ARG_ROOT:
                        free(arg_root);
                        arg_root = path_make_absolute_cwd(optarg);
                        if (!arg_root)
                                return log_oom();

                        path_kill_slashes(arg_root);

                        if (path_equal(arg_root, "/"))
                                arg_root = mfree(arg_root);

                        break;

                case ARG_LOCALE:
                        if (!locale_is_valid(optarg)) {
                                log_error("Locale %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_locale, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_LOCALE_MESSAGES:
                        if (!locale_is_valid(optarg)) {
                                log_error("Locale %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_locale_messages, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_TIMEZONE:
                        if (!timezone_is_valid(optarg)) {
                                log_error("Timezone %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_timezone, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_ROOT_PASSWORD:
                        r = free_and_strdup(&arg_root_password, optarg);
                        if (r < 0)
                                return log_oom();
                        break;

                case ARG_ROOT_PASSWORD_FILE:
                        arg_root_password = mfree(arg_root_password);

                        r = read_one_line_file(optarg, &arg_root_password);
                        if (r < 0)
                                return log_error_errno(r, "Failed to read %s: %m", optarg);

                        break;

                case ARG_HOSTNAME:
                        if (!hostname_is_valid(optarg, true)) {
                                log_error("Host name %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        hostname_cleanup(optarg);
                        r = free_and_strdup(&arg_hostname, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_MACHINE_ID:
                        if (sd_id128_from_string(optarg, &arg_machine_id) < 0) {
                                log_error("Failed to parse machine id %s.", optarg);
                                return -EINVAL;
                        }

                        break;

                case ARG_PROMPT:
                        arg_prompt_locale = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
                        break;

                case ARG_PROMPT_LOCALE:
                        arg_prompt_locale = true;
                        break;

                case ARG_PROMPT_TIMEZONE:
                        arg_prompt_timezone = true;
                        break;

                case ARG_PROMPT_HOSTNAME:
                        arg_prompt_hostname = true;
                        break;

                case ARG_PROMPT_ROOT_PASSWORD:
                        arg_prompt_root_password = true;
                        break;

                case ARG_COPY:
                        arg_copy_locale = arg_copy_timezone = arg_copy_root_password = true;
                        break;

                case ARG_COPY_LOCALE:
                        arg_copy_locale = true;
                        break;

                case ARG_COPY_TIMEZONE:
                        arg_copy_timezone = true;
                        break;

                case ARG_COPY_ROOT_PASSWORD:
                        arg_copy_root_password = true;
                        break;

                case ARG_SETUP_MACHINE_ID:

                        r = sd_id128_randomize(&arg_machine_id);
                        if (r < 0)
                                return log_error_errno(r, "Failed to generate randomized machine ID: %m");

                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }

        return 1;
}
예제 #7
0
static void *server(void *p) {
        struct context *c = p;
        sd_bus *bus = NULL;
        sd_id128_t id;
        bool quit = false;
        int r;

        assert_se(sd_id128_randomize(&id) >= 0);

        assert_se(sd_bus_new(&bus) >= 0);
        assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
        assert_se(sd_bus_set_server(bus, 1, id) >= 0);
        assert_se(sd_bus_set_anonymous(bus, c->server_anonymous_auth) >= 0);
        assert_se(sd_bus_negotiate_fds(bus, c->server_negotiate_unix_fds) >= 0);
        assert_se(sd_bus_start(bus) >= 0);

        while (!quit) {
                _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;

                r = sd_bus_process(bus, &m);
                if (r < 0) {
                        log_error("Failed to process requests: %s", strerror(-r));
                        goto fail;
                }

                if (r == 0) {
                        r = sd_bus_wait(bus, (uint64_t) -1);
                        if (r < 0) {
                                log_error("Failed to wait: %s", strerror(-r));
                                goto fail;
                        }

                        continue;
                }

                if (!m)
                        continue;

                log_info("Got message! member=%s", strna(sd_bus_message_get_member(m)));

                if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Exit")) {

                        assert_se((sd_bus_can_send(bus, 'h') >= 1) == (c->server_negotiate_unix_fds && c->client_negotiate_unix_fds));

                        r = sd_bus_message_new_method_return(m, &reply);
                        if (r < 0) {
                                log_error("Failed to allocate return: %s", strerror(-r));
                                goto fail;
                        }

                        quit = true;

                } else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
                        r = sd_bus_message_new_method_error(
                                        m,
                                        &reply,
                                        &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
                        if (r < 0) {
                                log_error("Failed to allocate return: %s", strerror(-r));
                                goto fail;
                        }
                }

                if (reply) {
                        r = sd_bus_send(bus, reply, NULL);
                        if (r < 0) {
                                log_error("Failed to send reply: %s", strerror(-r));
                                goto fail;
                        }
                }
        }

        r = 0;

fail:
        if (bus) {
                sd_bus_flush(bus);
                sd_bus_unref(bus);
        }

        return INT_TO_PTR(r);
}
예제 #8
0
static void test_non_empty(void) {
        dual_timestamp ts;
        JournalFile *f;
        struct iovec iovec;
        static const char test[] = "TEST1=1", test2[] = "TEST2=2";
        Object *o;
        uint64_t p;
        sd_id128_t fake_boot_id;
        char t[] = "/tmp/journal-XXXXXX";

        test_setup_logging(LOG_DEBUG);

        assert_se(mkdtemp(t));
        assert_se(chdir(t) >= 0);

        assert_se(journal_file_open(-1, "test.journal", O_RDWR|O_CREAT, 0666, true, (uint64_t) -1, true, NULL, NULL, NULL, NULL, &f) == 0);

        assert_se(dual_timestamp_get(&ts));
        assert_se(sd_id128_randomize(&fake_boot_id) == 0);

        iovec.iov_base = (void*) test;
        iovec.iov_len = strlen(test);
        assert_se(journal_file_append_entry(f, &ts, NULL, &iovec, 1, NULL, NULL, NULL) == 0);

        iovec.iov_base = (void*) test2;
        iovec.iov_len = strlen(test2);
        assert_se(journal_file_append_entry(f, &ts, NULL, &iovec, 1, NULL, NULL, NULL) == 0);

        iovec.iov_base = (void*) test;
        iovec.iov_len = strlen(test);
        assert_se(journal_file_append_entry(f, &ts, &fake_boot_id, &iovec, 1, NULL, NULL, NULL) == 0);

#if HAVE_GCRYPT
        journal_file_append_tag(f);
#endif
        journal_file_dump(f);

        assert_se(journal_file_next_entry(f, 0, DIRECTION_DOWN, &o, &p) == 1);
        assert_se(le64toh(o->entry.seqnum) == 1);

        assert_se(journal_file_next_entry(f, p, DIRECTION_DOWN, &o, &p) == 1);
        assert_se(le64toh(o->entry.seqnum) == 2);

        assert_se(journal_file_next_entry(f, p, DIRECTION_DOWN, &o, &p) == 1);
        assert_se(le64toh(o->entry.seqnum) == 3);
        assert_se(sd_id128_equal(o->entry.boot_id, fake_boot_id));

        assert_se(journal_file_next_entry(f, p, DIRECTION_DOWN, &o, &p) == 0);

        assert_se(journal_file_next_entry(f, 0, DIRECTION_DOWN, &o, &p) == 1);
        assert_se(le64toh(o->entry.seqnum) == 1);

        assert_se(journal_file_find_data_object(f, test, strlen(test), NULL, &p) == 1);
        assert_se(journal_file_next_entry_for_data(f, NULL, 0, p, DIRECTION_DOWN, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 1);

        assert_se(journal_file_next_entry_for_data(f, NULL, 0, p, DIRECTION_UP, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 3);

        assert_se(journal_file_find_data_object(f, test2, strlen(test2), NULL, &p) == 1);
        assert_se(journal_file_next_entry_for_data(f, NULL, 0, p, DIRECTION_UP, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 2);

        assert_se(journal_file_next_entry_for_data(f, NULL, 0, p, DIRECTION_DOWN, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 2);

        assert_se(journal_file_find_data_object(f, "quux", 4, NULL, &p) == 0);

        assert_se(journal_file_move_to_entry_by_seqnum(f, 1, DIRECTION_DOWN, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 1);

        assert_se(journal_file_move_to_entry_by_seqnum(f, 3, DIRECTION_DOWN, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 3);

        assert_se(journal_file_move_to_entry_by_seqnum(f, 2, DIRECTION_DOWN, &o, NULL) == 1);
        assert_se(le64toh(o->entry.seqnum) == 2);

        assert_se(journal_file_move_to_entry_by_seqnum(f, 10, DIRECTION_DOWN, &o, NULL) == 0);

        journal_file_rotate(&f, true, (uint64_t) -1, true, NULL);
        journal_file_rotate(&f, true, (uint64_t) -1, true, NULL);

        (void) journal_file_close(f);

        log_info("Done...");

        if (arg_keep)
                log_info("Not removing %s", t);
        else {
                journal_directory_vacuum(".", 3000000, 0, 0, NULL, true);

                assert_se(rm_rf(t, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
        }

        puts("------------------------------------------------------------");
}
예제 #9
0
int main(int argc, char *argv[]) {
        sd_id128_t id, id2;
        char t[33], q[37];
        _cleanup_free_ char *b = NULL;
        _cleanup_close_ int fd = -1;

        assert_se(sd_id128_randomize(&id) == 0);
        printf("random: %s\n", sd_id128_to_string(id, t));

        assert_se(sd_id128_from_string(t, &id2) == 0);
        assert_se(sd_id128_equal(id, id2));

        if (sd_booted() > 0) {
                assert_se(sd_id128_get_machine(&id) == 0);
                printf("machine: %s\n", sd_id128_to_string(id, t));

                assert_se(sd_id128_get_boot(&id) == 0);
                printf("boot: %s\n", sd_id128_to_string(id, t));
        }

        printf("waldi: %s\n", sd_id128_to_string(ID128_WALDI, t));
        assert_se(streq(t, STR_WALDI));

        assert_se(asprintf(&b, SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 32);
        printf("waldi2: %s\n", b);
        assert_se(streq(t, b));

        printf("waldi3: %s\n", id128_to_uuid_string(ID128_WALDI, q));
        assert_se(streq(q, UUID_WALDI));

        b = mfree(b);
        assert_se(asprintf(&b, ID128_UUID_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 36);
        printf("waldi4: %s\n", b);
        assert_se(streq(q, b));

        assert_se(sd_id128_from_string(STR_WALDI, &id) >= 0);
        assert_se(sd_id128_equal(id, ID128_WALDI));

        assert_se(sd_id128_from_string(UUID_WALDI, &id) >= 0);
        assert_se(sd_id128_equal(id, ID128_WALDI));

        assert_se(sd_id128_from_string("", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f101", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f10-", &id) < 0);
        assert_se(sd_id128_from_string("01020304-0506-0708-090a0b0c0d0e0f10", &id) < 0);
        assert_se(sd_id128_from_string("010203040506-0708-090a-0b0c0d0e0f10", &id) < 0);

        assert_se(id128_is_valid(STR_WALDI));
        assert_se(id128_is_valid(UUID_WALDI));
        assert_se(!id128_is_valid(""));
        assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f101"));
        assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f10-"));
        assert_se(!id128_is_valid("01020304-0506-0708-090a0b0c0d0e0f10"));
        assert_se(!id128_is_valid("010203040506-0708-090a-0b0c0d0e0f10"));

        fd = open_tmpfile_unlinkable(NULL, O_RDWR|O_CLOEXEC);
        assert_se(fd >= 0);

        /* First, write as UUID */
        assert_se(sd_id128_randomize(&id) >= 0);
        assert_se(id128_write_fd(fd, ID128_UUID, id, false) >= 0);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) == -EINVAL);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_UUID, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_ANY, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        /* Second, write as plain */
        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(ftruncate(fd, 0) >= 0);

        assert_se(sd_id128_randomize(&id) >= 0);
        assert_se(id128_write_fd(fd, ID128_PLAIN, id, false) >= 0);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_UUID, &id2) == -EINVAL);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_ANY, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        /* Third, write plain without trailing newline */
        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(ftruncate(fd, 0) >= 0);

        assert_se(sd_id128_randomize(&id) >= 0);
        assert_se(write(fd, sd_id128_to_string(id, t), 32) == 32);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_UUID, &id2) == -EINVAL);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        /* Third, write UUID without trailing newline */
        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(ftruncate(fd, 0) >= 0);

        assert_se(sd_id128_randomize(&id) >= 0);
        assert_se(write(fd, id128_to_uuid_string(id, q), 36) == 36);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) == -EINVAL);

        assert_se(lseek(fd, 0, SEEK_SET) == 0);
        assert_se(id128_read_fd(fd, ID128_UUID, &id2) >= 0);
        assert_se(sd_id128_equal(id, id2));

        return 0;
}
예제 #10
0
static int generate(char id[34]) {
        int fd, r;
        unsigned char *p;
        sd_id128_t buf;
        char *q;
        ssize_t k;
        const char *vm_id;

        assert(id);

        /* First, try reading the D-Bus machine id, unless it is a symlink */
        fd = open("/var/lib/dbus/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
        if (fd >= 0) {

                k = loop_read(fd, id, 32, false);
                close_nointr_nofail(fd);

                if (k >= 32) {
                        id[32] = '\n';
                        id[33] = 0;

                        log_info("Initializing machine ID from D-Bus machine ID.");
                        return 0;
                }
        }

        /* If that didn't work, see if we are running in qemu/kvm and a
         * machine ID was passed in via -uuid on the qemu/kvm command
         * line */

        r = detect_vm(&vm_id);
        if (r > 0 && streq(vm_id, "kvm")) {
                char uuid[37];

                fd = open("/sys/class/dmi/id/product_uuid", O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
                if (fd >= 0) {
                        k = loop_read(fd, uuid, 36, false);
                        close_nointr_nofail(fd);

                        if (k >= 36) {
                                r = shorten_uuid(id, uuid);
                                if (r >= 0) {
                                        log_info("Initializing machine ID from KVM UUID.");
                                        return 0;
                                }
                        }
                }
        }

        /* If that didn't work either, see if we are running in a
         * container, and a machine ID was passed in via
         * $container_uuid the way libvirt/LXC does it */
        r = detect_container(NULL);
        if (r > 0) {
                char *e;

                r = getenv_for_pid(1, "container_uuid", &e);
                if (r > 0) {
                        if (strlen(e) >= 36) {
                                r = shorten_uuid(id, e);
                                if (r >= 0) {
                                        log_info("Initializing machine ID from container UUID.");
                                        free(e);
                                        return 0;
                                }
                        }

                        free(e);
                }
        }

        /* If that didn't work, generate a random machine id */
        r = sd_id128_randomize(&buf);
        if (r < 0) {
                log_error("Failed to open /dev/urandom: %s", strerror(-r));
                return r;
        }

        for (p = buf.bytes, q = id; p < buf.bytes + sizeof(buf); p++, q += 2) {
                q[0] = hexchar(*p >> 4);
                q[1] = hexchar(*p & 15);
        }

        id[32] = '\n';
        id[33] = 0;

        log_info("Initializing machine ID from random generator.");

        return 0;
}