| /* |
| * uuidd.c --- UUID-generation daemon |
| * |
| * Copyright (C) 2007 Theodore Ts'o |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Public |
| * License. |
| * %End-Header% |
| */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <err.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <string.h> |
| #include <getopt.h> |
| #include <sys/signalfd.h> |
| #include <poll.h> |
| |
| #include "uuid.h" |
| #include "uuidd.h" |
| #include "all-io.h" |
| #include "c.h" |
| #include "closestream.h" |
| #include "strutils.h" |
| #include "optutils.h" |
| #include "monotonic.h" |
| #include "timer.h" |
| |
| #ifdef HAVE_LIBSYSTEMD |
| # include <systemd/sd-daemon.h> |
| #endif |
| |
| #include "nls.h" |
| |
| /* length of binary representation of UUID */ |
| #define UUID_LEN (sizeof(uuid_t)) |
| |
| /* server loop control structure */ |
| struct uuidd_cxt_t { |
| const char *cleanup_pidfile; |
| const char *cleanup_socket; |
| uint32_t timeout; |
| unsigned int debug: 1, |
| quiet: 1, |
| no_fork: 1, |
| no_sock: 1; |
| }; |
| |
| static void __attribute__((__noreturn__)) usage(void) |
| { |
| FILE *out = stdout; |
| fputs(USAGE_HEADER, out); |
| fprintf(out, _(" %s [options]\n"), program_invocation_short_name); |
| fputs(USAGE_SEPARATOR, out); |
| fputs(_("A daemon for generating UUIDs.\n"), out); |
| fputs(USAGE_OPTIONS, out); |
| fputs(_(" -p, --pid <path> path to pid file\n"), out); |
| fputs(_(" -s, --socket <path> path to socket\n"), out); |
| fputs(_(" -T, --timeout <sec> specify inactivity timeout\n"), out); |
| fputs(_(" -k, --kill kill running daemon\n"), out); |
| fputs(_(" -r, --random test random-based generation\n"), out); |
| fputs(_(" -t, --time test time-based generation\n"), out); |
| fputs(_(" -n, --uuids <num> request number of uuids\n"), out); |
| fputs(_(" -P, --no-pid do not create pid file\n"), out); |
| fputs(_(" -F, --no-fork do not daemonize using double-fork\n"), out); |
| fputs(_(" -S, --socket-activation do not create listening socket\n"), out); |
| fputs(_(" -d, --debug run in debugging mode\n"), out); |
| fputs(_(" -q, --quiet turn on quiet mode\n"), out); |
| fputs(USAGE_SEPARATOR, out); |
| printf(USAGE_HELP_OPTIONS(25)); |
| printf(USAGE_MAN_TAIL("uuidd(8)")); |
| exit(EXIT_SUCCESS); |
| } |
| |
| static void create_daemon(void) |
| { |
| uid_t euid; |
| |
| if (daemon(0, 0)) |
| err(EXIT_FAILURE, "daemon"); |
| |
| euid = geteuid(); |
| if (setreuid(euid, euid) < 0) |
| err(EXIT_FAILURE, "setreuid"); |
| } |
| |
| static int call_daemon(const char *socket_path, int op, char *buf, |
| size_t buflen, int *num, const char **err_context) |
| { |
| char op_buf[8]; |
| int op_len; |
| int s; |
| ssize_t ret; |
| int32_t reply_len = 0; |
| struct sockaddr_un srv_addr; |
| |
| if (((op == UUIDD_OP_BULK_TIME_UUID) || |
| (op == UUIDD_OP_BULK_RANDOM_UUID)) && !num) { |
| if (err_context) |
| *err_context = _("bad arguments"); |
| errno = EINVAL; |
| return -1; |
| } |
| |
| if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { |
| if (err_context) |
| *err_context = _("socket"); |
| return -1; |
| } |
| |
| srv_addr.sun_family = AF_UNIX; |
| assert(strlen(socket_path) < sizeof(srv_addr.sun_path)); |
| xstrncpy(srv_addr.sun_path, socket_path, sizeof(srv_addr.sun_path)); |
| |
| if (connect(s, (const struct sockaddr *) &srv_addr, |
| sizeof(struct sockaddr_un)) < 0) { |
| if (err_context) |
| *err_context = _("connect"); |
| close(s); |
| return -1; |
| } |
| |
| if (op == UUIDD_OP_BULK_RANDOM_UUID) { |
| if ((*num) * UUID_LEN > buflen - 4) |
| *num = (buflen - 4) / UUID_LEN; |
| } |
| op_buf[0] = op; |
| op_len = 1; |
| if ((op == UUIDD_OP_BULK_TIME_UUID) || |
| (op == UUIDD_OP_BULK_RANDOM_UUID)) { |
| memcpy(op_buf + 1, num, sizeof(int)); |
| op_len += sizeof(int); |
| } |
| |
| ret = write_all(s, op_buf, op_len); |
| if (ret < 0) { |
| if (err_context) |
| *err_context = _("write"); |
| close(s); |
| return -1; |
| } |
| |
| ret = read_all(s, (char *) &reply_len, sizeof(reply_len)); |
| if (ret < 0) { |
| if (err_context) |
| *err_context = _("read count"); |
| close(s); |
| return -1; |
| } |
| if (reply_len < 0 || (size_t) reply_len > buflen) { |
| if (err_context) |
| *err_context = _("bad response length"); |
| close(s); |
| return -1; |
| } |
| ret = read_all(s, (char *) buf, reply_len); |
| |
| if ((ret > 0) && (op == UUIDD_OP_BULK_TIME_UUID)) { |
| if (reply_len >= (int) (UUID_LEN + sizeof(int))) |
| memcpy(buf + UUID_LEN, num, sizeof(int)); |
| else |
| *num = -1; |
| } |
| if ((ret > 0) && (op == UUIDD_OP_BULK_RANDOM_UUID)) { |
| if (reply_len >= (int) sizeof(int)) |
| memcpy(buf, num, sizeof(int)); |
| else |
| *num = -1; |
| } |
| |
| close(s); |
| |
| return ret; |
| } |
| |
| /* |
| * Exclusively create and open a pid file with path @pidfile_path |
| * |
| * Return file descriptor of the created pid_file. |
| */ |
| static int create_pidfile(struct uuidd_cxt_t *cxt, const char *pidfile_path) |
| { |
| int fd_pidfile; |
| struct flock fl; |
| |
| fd_pidfile = open(pidfile_path, O_CREAT | O_RDWR, 0664); |
| if (fd_pidfile < 0) { |
| if (!cxt->quiet) |
| warn(_("cannot open %s"), pidfile_path); |
| exit(EXIT_FAILURE); |
| } |
| cxt->cleanup_pidfile = pidfile_path; |
| |
| fl.l_type = F_WRLCK; |
| fl.l_whence = SEEK_SET; |
| fl.l_start = 0; |
| fl.l_len = 0; |
| fl.l_pid = 0; |
| while (fcntl(fd_pidfile, F_SETLKW, &fl) < 0) { |
| if ((errno == EAGAIN) || (errno == EINTR)) |
| continue; |
| if (!cxt->quiet) |
| warn(_("cannot lock %s"), pidfile_path); |
| exit(EXIT_FAILURE); |
| } |
| |
| return fd_pidfile; |
| } |
| |
| /* |
| * Create AF_UNIX, SOCK_STREAM socket and bind to @socket_path |
| * |
| * If @will_fork is true, then make sure the descriptor |
| * of the socket is >2, so that it won't be later closed |
| * during create_daemon(). |
| * |
| * Return file descriptor corresponding to created socket. |
| */ |
| static int create_socket(struct uuidd_cxt_t *uuidd_cxt, |
| const char *socket_path, int will_fork) |
| { |
| struct sockaddr_un my_addr; |
| mode_t save_umask; |
| int s; |
| |
| if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { |
| if (!uuidd_cxt->quiet) |
| warn(_("couldn't create unix stream socket")); |
| exit(EXIT_FAILURE); |
| } |
| |
| /* |
| * Make sure the socket isn't using fd numbers 0-2 to avoid it |
| * getting closed by create_daemon() |
| */ |
| while (will_fork && s <= 2) { |
| s = dup(s); |
| if (s < 0) |
| err(EXIT_FAILURE, "dup"); |
| } |
| |
| /* |
| * Create the address we will be binding to. |
| */ |
| my_addr.sun_family = AF_UNIX; |
| assert(strlen(socket_path) < sizeof(my_addr.sun_path)); |
| xstrncpy(my_addr.sun_path, socket_path, sizeof(my_addr.sun_path)); |
| unlink(socket_path); |
| save_umask = umask(0); |
| if (bind(s, (const struct sockaddr *) &my_addr, |
| sizeof(struct sockaddr_un)) < 0) { |
| if (!uuidd_cxt->quiet) |
| warn(_("couldn't bind unix socket %s"), socket_path); |
| exit(EXIT_FAILURE); |
| } |
| umask(save_umask); |
| uuidd_cxt->cleanup_socket = socket_path; |
| |
| return s; |
| } |
| |
| static void __attribute__((__noreturn__)) all_done(const struct uuidd_cxt_t *uuidd_cxt, int ret) |
| { |
| if (uuidd_cxt->cleanup_pidfile) |
| unlink(uuidd_cxt->cleanup_pidfile); |
| if (uuidd_cxt->cleanup_socket) |
| unlink(uuidd_cxt->cleanup_socket); |
| exit(ret); |
| } |
| |
| static void handle_signal(const struct uuidd_cxt_t *uuidd_cxt, int fd) |
| { |
| struct signalfd_siginfo info; |
| ssize_t bytes; |
| |
| bytes = read(fd, &info, sizeof(info)); |
| if (bytes != sizeof(info)) { |
| if (errno == EAGAIN) |
| return; |
| warn(_("receiving signal failed")); |
| info.ssi_signo = 0; |
| } |
| if (info.ssi_signo == SIGPIPE) |
| return; /* ignored */ |
| all_done(uuidd_cxt, EXIT_SUCCESS); |
| } |
| |
| static void timeout_handler(int sig __attribute__((__unused__)), |
| siginfo_t * info, |
| void *context __attribute__((__unused__))) |
| { |
| if (info->si_code == SI_TIMER) |
| errx(EXIT_FAILURE, _("timed out")); |
| } |
| |
| static void server_loop(const char *socket_path, const char *pidfile_path, |
| struct uuidd_cxt_t *uuidd_cxt) |
| { |
| struct sockaddr_un from_addr; |
| socklen_t fromlen; |
| int32_t reply_len = 0; |
| uuid_t uu; |
| char reply_buf[1024], *cp; |
| char op, str[UUID_STR_LEN]; |
| int i, ns, len, num; |
| int s = 0; |
| int fd_pidfile = -1; |
| int ret; |
| struct pollfd pfd[2]; |
| sigset_t sigmask; |
| int sigfd; |
| enum { |
| POLLFD_SIGNAL = 0, |
| POLLFD_SOCKET |
| }; |
| |
| #ifdef HAVE_LIBSYSTEMD |
| if (!uuidd_cxt->no_sock) /* no_sock implies no_fork and no_pid */ |
| #endif |
| { |
| static timer_t t_id; |
| struct itimerval timeout; |
| |
| memset(&timeout, 0, sizeof timeout); |
| timeout.it_value.tv_sec = 30; |
| if (setup_timer(&t_id, &timeout, &timeout_handler)) |
| err(EXIT_FAILURE, _("cannot set up timer")); |
| if (pidfile_path) |
| fd_pidfile = create_pidfile(uuidd_cxt, pidfile_path); |
| ret = call_daemon(socket_path, UUIDD_OP_GETPID, reply_buf, |
| sizeof(reply_buf), 0, NULL); |
| cancel_timer(&t_id); |
| if (ret > 0) { |
| if (!uuidd_cxt->quiet) |
| warnx(_("uuidd daemon is already running at pid %s"), |
| reply_buf); |
| exit(EXIT_FAILURE); |
| } |
| |
| s = create_socket(uuidd_cxt, socket_path, |
| (!uuidd_cxt->debug || !uuidd_cxt->no_fork)); |
| if (listen(s, SOMAXCONN) < 0) { |
| if (!uuidd_cxt->quiet) |
| warn(_("couldn't listen on unix socket %s"), socket_path); |
| exit(EXIT_FAILURE); |
| } |
| |
| if (!uuidd_cxt->debug && !uuidd_cxt->no_fork) |
| create_daemon(); |
| |
| if (pidfile_path) { |
| sprintf(reply_buf, "%8d\n", getpid()); |
| if (ftruncate(fd_pidfile, 0)) |
| err(EXIT_FAILURE, _("could not truncate file: %s"), pidfile_path); |
| write_all(fd_pidfile, reply_buf, strlen(reply_buf)); |
| if (fd_pidfile > 1 && close_fd(fd_pidfile) != 0) |
| err(EXIT_FAILURE, _("write failed: %s"), pidfile_path); |
| } |
| |
| } |
| |
| #ifdef HAVE_LIBSYSTEMD |
| if (uuidd_cxt->no_sock) { |
| const int r = sd_listen_fds(0); |
| |
| if (r < 0) { |
| errno = r * -1; |
| err(EXIT_FAILURE, _("sd_listen_fds() failed")); |
| } else if (r == 0) |
| errx(EXIT_FAILURE, |
| _("no file descriptors received, check systemctl status uuidd.socket")); |
| else if (1 < r) |
| errx(EXIT_FAILURE, |
| _("too many file descriptors received, check uuidd.socket")); |
| s = SD_LISTEN_FDS_START + 0; |
| } |
| #endif |
| |
| sigemptyset(&sigmask); |
| sigaddset(&sigmask, SIGHUP); |
| sigaddset(&sigmask, SIGINT); |
| sigaddset(&sigmask, SIGTERM); |
| sigaddset(&sigmask, SIGALRM); |
| sigaddset(&sigmask, SIGPIPE); |
| /* Block signals so that they aren't handled according to their |
| * default dispositions */ |
| sigprocmask(SIG_BLOCK, &sigmask, NULL); |
| if ((sigfd = signalfd(-1, &sigmask, 0)) < 0) |
| err(EXIT_FAILURE, _("cannot set signal handler")); |
| |
| pfd[POLLFD_SIGNAL].fd = sigfd; |
| pfd[POLLFD_SOCKET].fd = s; |
| pfd[POLLFD_SIGNAL].events = pfd[POLLFD_SOCKET].events = POLLIN | POLLERR | POLLHUP; |
| |
| while (1) { |
| ret = poll(pfd, ARRAY_SIZE(pfd), |
| uuidd_cxt->timeout ? |
| (int) uuidd_cxt->timeout * 1000 : -1); |
| if (ret < 0) { |
| if (errno == EAGAIN) |
| continue; |
| warn(_("poll failed")); |
| all_done(uuidd_cxt, EXIT_FAILURE); |
| } |
| if (ret == 0) { /* true when poll() times out */ |
| if (uuidd_cxt->debug) |
| fprintf(stderr, _("timeout [%d sec]\n"), uuidd_cxt->timeout), |
| all_done(uuidd_cxt, EXIT_SUCCESS); |
| } |
| if (pfd[POLLFD_SIGNAL].revents != 0) |
| handle_signal(uuidd_cxt, sigfd); |
| if (pfd[POLLFD_SOCKET].revents == 0) |
| continue; |
| fromlen = sizeof(from_addr); |
| ns = accept(s, (struct sockaddr *) &from_addr, &fromlen); |
| if (ns < 0) { |
| if ((errno == EAGAIN) || (errno == EINTR)) |
| continue; |
| else |
| err(EXIT_FAILURE, "accept"); |
| } |
| len = read(ns, &op, 1); |
| if (len != 1) { |
| if (len < 0) |
| warn(_("read failed")); |
| else |
| warnx(_("error reading from client, len = %d"), |
| len); |
| goto shutdown_socket; |
| } |
| if ((op == UUIDD_OP_BULK_TIME_UUID) || |
| (op == UUIDD_OP_BULK_RANDOM_UUID)) { |
| if (read_all(ns, (char *) &num, sizeof(num)) != 4) |
| goto shutdown_socket; |
| if (uuidd_cxt->debug) |
| fprintf(stderr, _("operation %d, incoming num = %d\n"), |
| op, num); |
| } else if (uuidd_cxt->debug) |
| fprintf(stderr, _("operation %d\n"), op); |
| |
| switch (op) { |
| case UUIDD_OP_GETPID: |
| sprintf(reply_buf, "%d", getpid()); |
| reply_len = strlen(reply_buf) + 1; |
| break; |
| case UUIDD_OP_GET_MAXOP: |
| sprintf(reply_buf, "%d", UUIDD_MAX_OP); |
| reply_len = strlen(reply_buf) + 1; |
| break; |
| case UUIDD_OP_TIME_UUID: |
| num = 1; |
| __uuid_generate_time(uu, &num); |
| if (uuidd_cxt->debug) { |
| uuid_unparse(uu, str); |
| fprintf(stderr, _("Generated time UUID: %s\n"), str); |
| } |
| memcpy(reply_buf, uu, sizeof(uu)); |
| reply_len = sizeof(uu); |
| break; |
| case UUIDD_OP_RANDOM_UUID: |
| num = 1; |
| __uuid_generate_random(uu, &num); |
| if (uuidd_cxt->debug) { |
| uuid_unparse(uu, str); |
| fprintf(stderr, _("Generated random UUID: %s\n"), str); |
| } |
| memcpy(reply_buf, uu, sizeof(uu)); |
| reply_len = sizeof(uu); |
| break; |
| case UUIDD_OP_BULK_TIME_UUID: |
| __uuid_generate_time(uu, &num); |
| if (uuidd_cxt->debug) { |
| uuid_unparse(uu, str); |
| fprintf(stderr, P_("Generated time UUID %s " |
| "and %d following\n", |
| "Generated time UUID %s " |
| "and %d following\n", num - 1), |
| str, num - 1); |
| } |
| memcpy(reply_buf, uu, sizeof(uu)); |
| reply_len = sizeof(uu); |
| memcpy(reply_buf + reply_len, &num, sizeof(num)); |
| reply_len += sizeof(num); |
| break; |
| case UUIDD_OP_BULK_RANDOM_UUID: |
| if (num < 0) |
| num = 1; |
| if (num > 1000) |
| num = 1000; |
| if (num * UUID_LEN > (int) (sizeof(reply_buf) - sizeof(num))) |
| num = (sizeof(reply_buf) - sizeof(num)) / UUID_LEN; |
| __uuid_generate_random((unsigned char *) reply_buf + |
| sizeof(num), &num); |
| if (uuidd_cxt->debug) { |
| fprintf(stderr, P_("Generated %d UUID:\n", |
| "Generated %d UUIDs:\n", num), num); |
| for (i = 0, cp = reply_buf + sizeof(num); |
| i < num; |
| i++, cp += UUID_LEN) { |
| uuid_unparse((unsigned char *)cp, str); |
| fprintf(stderr, "\t%s\n", str); |
| } |
| } |
| reply_len = (num * UUID_LEN) + sizeof(num); |
| memcpy(reply_buf, &num, sizeof(num)); |
| break; |
| default: |
| if (uuidd_cxt->debug) |
| fprintf(stderr, _("Invalid operation %d\n"), op); |
| goto shutdown_socket; |
| } |
| write_all(ns, (char *) &reply_len, sizeof(reply_len)); |
| write_all(ns, reply_buf, reply_len); |
| shutdown_socket: |
| close(ns); |
| } |
| } |
| |
| static void __attribute__ ((__noreturn__)) unexpected_size(int size) |
| { |
| errx(EXIT_FAILURE, _("Unexpected reply length from server %d"), size); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| const char *socket_path = UUIDD_SOCKET_PATH; |
| const char *pidfile_path = NULL; |
| const char *err_context = NULL; |
| char buf[1024], *cp; |
| char str[UUID_STR_LEN]; |
| uuid_t uu; |
| int i, c, ret; |
| int do_type = 0, do_kill = 0, num = 0; |
| int no_pid = 0; |
| int s_flag = 0; |
| |
| struct uuidd_cxt_t uuidd_cxt = { .timeout = 0 }; |
| |
| static const struct option longopts[] = { |
| {"pid", required_argument, NULL, 'p'}, |
| {"socket", required_argument, NULL, 's'}, |
| {"timeout", required_argument, NULL, 'T'}, |
| {"kill", no_argument, NULL, 'k'}, |
| {"random", no_argument, NULL, 'r'}, |
| {"time", no_argument, NULL, 't'}, |
| {"uuids", required_argument, NULL, 'n'}, |
| {"no-pid", no_argument, NULL, 'P'}, |
| {"no-fork", no_argument, NULL, 'F'}, |
| {"socket-activation", no_argument, NULL, 'S'}, |
| {"debug", no_argument, NULL, 'd'}, |
| {"quiet", no_argument, NULL, 'q'}, |
| {"version", no_argument, NULL, 'V'}, |
| {"help", no_argument, NULL, 'h'}, |
| {NULL, 0, NULL, 0} |
| }; |
| static const ul_excl_t excl[] = { |
| { 'P', 'p' }, |
| { 'd', 'q' }, |
| { 'r', 't' }, |
| { 0 } |
| }; |
| int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; |
| |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| atexit(close_stdout); |
| |
| while ((c = |
| getopt_long(argc, argv, "p:s:T:krtn:PFSdqVh", longopts, |
| NULL)) != -1) { |
| err_exclusive_options(c, longopts, excl, excl_st); |
| switch (c) { |
| case 'd': |
| uuidd_cxt.debug = 1; |
| break; |
| case 'k': |
| do_kill++; |
| break; |
| case 'n': |
| num = strtou32_or_err(optarg, |
| _("failed to parse --uuids")); |
| break; |
| case 'p': |
| pidfile_path = optarg; |
| break; |
| case 'P': |
| no_pid = 1; |
| break; |
| case 'F': |
| uuidd_cxt.no_fork = 1; |
| break; |
| case 'S': |
| #ifdef HAVE_LIBSYSTEMD |
| uuidd_cxt.no_sock = 1; |
| uuidd_cxt.no_fork = 1; |
| no_pid = 1; |
| #else |
| errx(EXIT_FAILURE, _("uuidd has been built without " |
| "support for socket activation")); |
| #endif |
| break; |
| case 'q': |
| uuidd_cxt.quiet = 1; |
| break; |
| case 'r': |
| do_type = UUIDD_OP_RANDOM_UUID; |
| break; |
| case 's': |
| socket_path = optarg; |
| s_flag = 1; |
| break; |
| case 't': |
| do_type = UUIDD_OP_TIME_UUID; |
| break; |
| case 'T': |
| uuidd_cxt.timeout = strtou32_or_err(optarg, |
| _("failed to parse --timeout")); |
| break; |
| case 'V': |
| printf(UTIL_LINUX_VERSION); |
| return EXIT_SUCCESS; |
| case 'h': |
| usage(); |
| default: |
| errtryhelp(EXIT_FAILURE); |
| } |
| } |
| |
| if (strlen(socket_path) >= sizeof(((struct sockaddr_un *)0)->sun_path)) |
| errx(EXIT_FAILURE, _("socket name too long: %s"), socket_path); |
| |
| if (!no_pid && !pidfile_path) |
| pidfile_path = UUIDD_PIDFILE_PATH; |
| |
| /* custom socket path and socket-activation make no sense */ |
| if (s_flag && uuidd_cxt.no_sock && !uuidd_cxt.quiet) |
| warnx(_("Both --socket-activation and --socket specified. " |
| "Ignoring --socket.")); |
| |
| if (num && do_type) { |
| ret = call_daemon(socket_path, do_type + 2, buf, |
| sizeof(buf), &num, &err_context); |
| if (ret < 0) |
| err(EXIT_FAILURE, _("error calling uuidd daemon (%s)"), |
| err_context ? : _("unexpected error")); |
| |
| if (do_type == UUIDD_OP_TIME_UUID) { |
| if (ret != sizeof(uu) + sizeof(num)) |
| unexpected_size(ret); |
| |
| uuid_unparse((unsigned char *) buf, str); |
| |
| printf(P_("%s and %d subsequent UUID\n", |
| "%s and %d subsequent UUIDs\n", num - 1), |
| str, num - 1); |
| } else { |
| printf(_("List of UUIDs:\n")); |
| cp = buf + 4; |
| if (ret != (int) (sizeof(num) + num * sizeof(uu))) |
| unexpected_size(ret); |
| for (i = 0; i < num; i++, cp += UUID_LEN) { |
| uuid_unparse((unsigned char *) cp, str); |
| printf("\t%s\n", str); |
| } |
| } |
| return EXIT_SUCCESS; |
| } |
| if (do_type) { |
| ret = call_daemon(socket_path, do_type, (char *) &uu, |
| sizeof(uu), 0, &err_context); |
| if (ret < 0) |
| err(EXIT_FAILURE, _("error calling uuidd daemon (%s)"), |
| err_context ? : _("unexpected error")); |
| if (ret != sizeof(uu)) |
| unexpected_size(ret); |
| |
| uuid_unparse(uu, str); |
| |
| printf("%s\n", str); |
| return EXIT_SUCCESS; |
| } |
| |
| if (do_kill) { |
| ret = call_daemon(socket_path, UUIDD_OP_GETPID, buf, sizeof(buf), 0, NULL); |
| if ((ret > 0) && ((do_kill = atoi((char *) buf)) > 0)) { |
| ret = kill(do_kill, SIGTERM); |
| if (ret < 0) { |
| if (!uuidd_cxt.quiet) |
| warn(_("couldn't kill uuidd running " |
| "at pid %d"), do_kill); |
| return EXIT_FAILURE; |
| } |
| if (!uuidd_cxt.quiet) |
| printf(_("Killed uuidd running at pid %d.\n"), |
| do_kill); |
| } |
| return EXIT_SUCCESS; |
| } |
| |
| server_loop(socket_path, pidfile_path, &uuidd_cxt); |
| return EXIT_SUCCESS; |
| } |