[thirdparty/util-linux.git] / misc-utils / uuidd.c

/*
 * 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>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#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>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern int getopt(int argc, char * const argv[], const char *optstring);
extern char *optarg;
extern int optind;
#endif

#include "uuid.h"
#include "uuidd.h"
#include "all-io.h"
#include "c.h"
#include "closestream.h"

#ifdef USE_SOCKET_ACTIVATION
#include "sd-daemon.h"
#endif

#include "nls.h"

#ifdef __GNUC__
#define CODE_ATTR(x) __attribute__(x)
#else
#define CODE_ATTR(x)
#endif

/* length of textual representation of UUID, including trailing \0 */
#define UUID_STR_LEN	37

/* length of binary representation of UUID */
#define UUID_LEN	(sizeof(uuid_t))

/* server loop control structure */
struct uuidd_cxt_t {
	int	timeout;
	unsigned int	debug: 1,
			quiet: 1,
			no_fork: 1,
			no_sock: 1;
};

static void __attribute__ ((__noreturn__)) usage(FILE * out)
{
	fputs(_("\nUsage:\n"), out);
	fprintf(out,
	      _(" %s [options]\n"), program_invocation_short_name);

	fputs(_("\nOptions:\n"), out);
	fputs(_(" -p, --pid <path>        path to pid file\n"
		" -s, --socket <path>     path to socket\n"
		" -T, --timeout <sec>     specify inactivity timeout\n"
		" -k, --kill              kill running daemon\n"
		" -r, --random            test random-based generation\n"
		" -t, --time              test time-based generation\n"
		" -n, --uuids <num>       request number of uuids\n"
		" -P, --no-pid            do not create pid file\n"
		" -F, --no-fork           do not daemonize using double-fork\n"
		" -S, --socket-activation do not create listening socket\n"
		" -d, --debug             run in debugging mode\n"
		" -q, --quiet             turn on quiet mode\n"
		" -V, --version           output version information and exit\n"
		" -h, --help              display this help and exit\n\n"), out);

	exit(out == stderr ? EXIT_FAILURE : 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 const char *cleanup_pidfile, *cleanup_socket;

static void terminate_intr(int signo CODE_ATTR((unused)))
{
	if (cleanup_pidfile)
		unlink(cleanup_pidfile);
	if (cleanup_socket)
		unlink(cleanup_socket);
	exit(EXIT_SUCCESS);
}

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;
	strncpy(srv_addr.sun_path, socket_path, sizeof(srv_addr.sun_path));
	srv_addr.sun_path[sizeof(srv_addr.sun_path) - 1] = '\0';

	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
 *
 * Set cleanup_pidfile global variable for the cleanup
 * handler. @pidfile_path must not be NULL.
 *
 * Return file descriptor of the created pid_file.
 */
static int create_pidfile(const char *pidfile_path, int quiet)
{
	int		fd_pidfile;
	struct flock	fl;

	fd_pidfile = open(pidfile_path, O_CREAT | O_RDWR, 0664);
	if (fd_pidfile < 0) {
		if (!quiet)
			fprintf(stderr, _("Failed to open/create %s: %m\n"),
				pidfile_path);
		exit(EXIT_FAILURE);
	}
	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 (!quiet)
			fprintf(stderr, _("Failed to lock %s: %m\n"), 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 wont be later closed
 * during create_daemon().
 *
 * Return file descriptor corresponding to created socket.
 */
static int create_socket(const char *socket_path, int will_fork, int quiet)
{
	struct sockaddr_un	my_addr;
	mode_t			save_umask;
	int 			s;

	if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
		if (!quiet)
			fprintf(stderr, _("Couldn't create unix stream socket: %m"));
		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;
	strncpy(my_addr.sun_path, socket_path, sizeof(my_addr.sun_path));
	my_addr.sun_path[sizeof(my_addr.sun_path) - 1] = '\0';
	unlink(socket_path);
	save_umask = umask(0);
	if (bind(s, (const struct sockaddr *) &my_addr,
		 sizeof(struct sockaddr_un)) < 0) {
		if (!quiet)
			fprintf(stderr,
				_("Couldn't bind unix socket %s: %m\n"), socket_path);
		exit(EXIT_FAILURE);
	}
	umask(save_umask);
	cleanup_socket = socket_path;

	return s;
}

static void server_loop(const char *socket_path, const char *pidfile_path,
			const 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;

#ifdef USE_SOCKET_ACTIVATION
	if (!uuidd_cxt->no_sock)	/* no_sock implies no_fork and no_pid */
#endif
	{

		signal(SIGALRM, terminate_intr);
		alarm(30);
		if (pidfile_path)
			fd_pidfile = create_pidfile(pidfile_path, uuidd_cxt->quiet);

		ret = call_daemon(socket_path, UUIDD_OP_GETPID, reply_buf,
				  sizeof(reply_buf), 0, NULL);
		if (ret > 0) {
			if (!uuidd_cxt->quiet)
				fprintf(stderr,
					_("uuidd daemon already running at pid %s\n"),
				       reply_buf);
			exit(EXIT_FAILURE);
		}
		alarm(0);

		s = create_socket(socket_path,
				  (!uuidd_cxt->debug || !uuidd_cxt->no_fork),
				  uuidd_cxt->quiet);
		if (listen(s, SOMAXCONN) < 0) {
			if (!uuidd_cxt->quiet)
				fprintf(stderr, _("Couldn't listen on unix "
						  "socket %s: %m\n"), socket_path);
			exit(EXIT_FAILURE);
		}

		if (!uuidd_cxt->debug && !uuidd_cxt->no_fork)
			create_daemon();

		if (pidfile_path) {
			sprintf(reply_buf, "%8d\n", getpid());
			ignore_result( ftruncate(fd_pidfile, 0) );
			write_all(fd_pidfile, reply_buf, strlen(reply_buf));
			if (fd_pidfile > 1)
				close(fd_pidfile); /* Unlock the pid file */
		}

	}

	signal(SIGHUP, terminate_intr);
	signal(SIGINT, terminate_intr);
	signal(SIGTERM, terminate_intr);
	signal(SIGALRM, terminate_intr);
	signal(SIGPIPE, SIG_IGN);

#ifdef USE_SOCKET_ACTIVATION
	if (uuidd_cxt->no_sock) {
		if (sd_listen_fds(0) != 1) {
			fprintf(stderr, _("No or too many file descriptors received.\n"));
			exit(EXIT_FAILURE);
		}

		s = SD_LISTEN_FDS_START + 0;
	}
#endif

	while (1) {
		fromlen = sizeof(from_addr);
		if (uuidd_cxt->timeout > 0)
			alarm(uuidd_cxt->timeout);
		ns = accept(s, (struct sockaddr *) &from_addr, &fromlen);
		alarm(0);
		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)
				perror("read");
			else
				fprintf(stderr, _("Error reading from client, "
					 "len = %d\n"), 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	*pidfile_path_param = NULL;
	const char	*err_context;
	char		buf[1024], *cp;
	char		str[UUID_STR_LEN], *tmp;
	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}
	};

	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) {
		switch (c) {
		case 'd':
			uuidd_cxt.debug = 1;
			break;
		case 'k':
			do_kill++;
			break;
		case 'n':
			num = strtol(optarg, &tmp, 0);
			if ((num < 1) || *tmp) {
				fprintf(stderr, _("Bad number: %s\n"), optarg);
				return EXIT_FAILURE;
			}
			break;
		case 'p':
			pidfile_path_param = optarg;
			break;
		case 'P':
			no_pid = 1;
			break;
		case 'F':
			uuidd_cxt.no_fork = 1;
			break;
		case 'S':
#ifdef USE_SOCKET_ACTIVATION
			uuidd_cxt.no_sock = 1;
			uuidd_cxt.no_fork = 1;
			no_pid = 1;
#else
			fprintf(stderr,
				_("uuidd has been built without support for socket activation.\n"));
			return EXIT_FAILURE;
#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 = strtol(optarg, &tmp, 0);
			if (uuidd_cxt.timeout < 0 || *tmp) {
				fprintf(stderr, _("Bad number: %s\n"), optarg);
				return EXIT_FAILURE;
			}
			break;
		case 'V':
			printf(UTIL_LINUX_VERSION);
			return EXIT_SUCCESS;
		case 'h':
			usage(stdout);
		default:
			usage(stderr);
		}
	}

	if (no_pid && pidfile_path_param && !uuidd_cxt.quiet)
		fprintf(stderr, _("Both --pid and --no-pid specified. "
				  "Ignoring --no-pid.\n"));

	if (!no_pid && !pidfile_path_param)
		pidfile_path = UUIDD_PIDFILE_PATH;
	else if (pidfile_path_param)
		pidfile_path = pidfile_path_param;

	/* custom socket path and socket-activation make no sense */
	if (s_flag && uuidd_cxt.no_sock && !uuidd_cxt.quiet)
		fprintf(stderr, _("Both --socket-activation and --socket specified. "
				  "Ignoring --socket\n"));

	if (num && do_type) {
		ret = call_daemon(socket_path, do_type + 2, buf,
				  sizeof(buf), &num, &err_context);
		if (ret < 0) {
			printf(_("Error calling uuidd daemon (%s): %m\n"), err_context);
			return EXIT_FAILURE;
		}
		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) {
			printf(_("Error calling uuidd daemon (%s): %m\n"), err_context);
			return EXIT_FAILURE;
		}
		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)
					fprintf(stderr,
						_("Couldn't kill uuidd running "
						  "at pid %d: %m\n"), 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;
}
Commit	Line	Data
69045d3d KZ	1	/*
	2	* uuidd.c --- UUID-generation daemon
	3	*
	4	* Copyright (C) 2007 Theodore Ts'o
	5	*
	6	* %Begin-Header%
	7	* This file may be redistributed under the terms of the GNU Public
	8	* License.
	9	* %End-Header%
	10	*/
	11	#include <stdio.h>
	12	#ifdef HAVE_STDLIB_H
	13	#include <stdlib.h>
	14	#endif
	15	#include <unistd.h>
	16	#include <inttypes.h>
	17	#include <errno.h>
ea091bed	18	#include <err.h>
69045d3d KZ	19	#include <sys/types.h>
	20	#include <sys/stat.h>
	21	#include <sys/socket.h>
	22	#include <sys/un.h>
	23	#include <fcntl.h>
	24	#include <signal.h>
	25	#include <string.h>
	26	#ifdef HAVE_GETOPT_H
	27	#include <getopt.h>
	28	#else
	29	extern int getopt(int argc, char * const argv[], const char *optstring);
	30	extern char *optarg;
	31	extern int optind;
	32	#endif
	33
	34	#include "uuid.h"
	35	#include "uuidd.h"
e12c9866	36	#include "all-io.h"
f6f3dc78	37	#include "c.h"
c05a80ca	38	#include "closestream.h"
bbe289c4 PU	39
	40	#ifdef USE_SOCKET_ACTIVATION
	41	#include "sd-daemon.h"
	42	#endif
	43
69045d3d KZ	44	#include "nls.h"
	45
	46	#ifdef __GNUC__
	47	#define CODE_ATTR(x) __attribute__(x)
	48	#else
	49	#define CODE_ATTR(x)
	50	#endif
	51
a8f13198 PU	52	/* length of textual representation of UUID, including trailing \0 */
	53	#define UUID_STR_LEN 37
	54
	55	/* length of binary representation of UUID */
	56	#define UUID_LEN (sizeof(uuid_t))
	57
881a0f6b PU	58	/* server loop control structure */
	59	struct uuidd_cxt_t {
	60	int timeout;
	61	unsigned int debug: 1,
	62	quiet: 1,
	63	no_fork: 1,
	64	no_sock: 1;
	65	};
	66
f0ef0b58	67	static void __attribute__ ((__noreturn__)) usage(FILE * out)
69045d3d	68	{
c63a92b8 KZ	69	fputs(_("\nUsage:\n"), out);
	70	fprintf(out,
	71	_(" %s [options]\n"), program_invocation_short_name);
f0ef0b58	72
c63a92b8	73	fputs(_("\nOptions:\n"), out);
bbe289c4 PU	74	fputs(_(" -p, --pid <path> path to pid file\n"
	75	" -s, --socket <path> path to socket\n"
	76	" -T, --timeout <sec> specify inactivity timeout\n"
	77	" -k, --kill kill running daemon\n"
	78	" -r, --random test random-based generation\n"
	79	" -t, --time test time-based generation\n"
	80	" -n, --uuids <num> request number of uuids\n"
	81	" -P, --no-pid do not create pid file\n"
	82	" -F, --no-fork do not daemonize using double-fork\n"
	83	" -S, --socket-activation do not create listening socket\n"
	84	" -d, --debug run in debugging mode\n"
	85	" -q, --quiet turn on quiet mode\n"
	86	" -V, --version output version information and exit\n"
	87	" -h, --help display this help and exit\n\n"), out);
f0ef0b58 SK	88
f0ef0b58 SK	89	exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
69045d3d KZ	90	}
69045d3d KZ	91
69045d3d KZ	92	static void create_daemon(void)
69045d3d KZ	93	{
69045d3d KZ	94	uid_t euid;
69045d3d KZ	95
f7c297b8	96	if (daemon(0, 0))
ea091bed	97	err(EXIT_FAILURE, "daemon");
69045d3d	98
69045d3d KZ	99	euid = geteuid();
69045d3d KZ	100	if (setreuid(euid, euid) < 0)
ea091bed	101	err(EXIT_FAILURE, "setreuid");
69045d3d KZ	102	}
69045d3d KZ	103
69045d3d KZ	104	static const char cleanup_pidfile, cleanup_socket;
	105
	106	static void terminate_intr(int signo CODE_ATTR((unused)))
	107	{
0abfbd9c PU	108	if (cleanup_pidfile)
0abfbd9c PU	109	unlink(cleanup_pidfile);
69045d3d	110	if (cleanup_socket)
f7c297b8	111	unlink(cleanup_socket);
41dc5bc0	112	exit(EXIT_SUCCESS);
69045d3d KZ	113	}
	114
	115	static int call_daemon(const char socket_path, int op, char buf,
c3bfedc3	116	size_t buflen, int num, const char *err_context)
69045d3d KZ	117	{
	118	char op_buf[8];
	119	int op_len;
	120	int s;
	121	ssize_t ret;
	122	int32_t reply_len = 0;
	123	struct sockaddr_un srv_addr;
	124
78314078 PU	125	if (((op == UUIDD_OP_BULK_TIME_UUID) \|\|
78314078 PU	126	(op == UUIDD_OP_BULK_RANDOM_UUID)) && !num) {
69045d3d KZ	127	if (err_context)
	128	*err_context = _("bad arguments");
	129	errno = EINVAL;
	130	return -1;
	131	}
	132
	133	if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
	134	if (err_context)
	135	*err_context = _("socket");
	136	return -1;
	137	}
	138
	139	srv_addr.sun_family = AF_UNIX;
	140	strncpy(srv_addr.sun_path, socket_path, sizeof(srv_addr.sun_path));
f7c297b8	141	srv_addr.sun_path[sizeof(srv_addr.sun_path) - 1] = '\0';
69045d3d KZ	142
	143	if (connect(s, (const struct sockaddr *) &srv_addr,
	144	sizeof(struct sockaddr_un)) < 0) {
	145	if (err_context)
	146	*err_context = _("connect");
	147	close(s);
	148	return -1;
	149	}
	150
78314078	151	if (op == UUIDD_OP_BULK_RANDOM_UUID) {
f7c297b8 SK	152	if ((num) UUID_LEN > buflen - 4)
f7c297b8 SK	153	*num = (buflen - 4) / UUID_LEN;
69045d3d KZ	154	}
	155	op_buf[0] = op;
	156	op_len = 1;
78314078 PU	157	if ((op == UUIDD_OP_BULK_TIME_UUID) \|\|
78314078 PU	158	(op == UUIDD_OP_BULK_RANDOM_UUID)) {
f7c297b8	159	memcpy(op_buf + 1, num, sizeof(int));
69045d3d KZ	160	op_len += sizeof(int);
	161	}
	162
	163	ret = write_all(s, op_buf, op_len);
38674931	164	if (ret < 0) {
69045d3d KZ	165	if (err_context)
	166	*err_context = _("write");
	167	close(s);
	168	return -1;
	169	}
	170
	171	ret = read_all(s, (char *) &reply_len, sizeof(reply_len));
	172	if (ret < 0) {
	173	if (err_context)
	174	*err_context = _("read count");
	175	close(s);
	176	return -1;
	177	}
c3bfedc3	178	if (reply_len < 0 \|\| (size_t) reply_len > buflen) {
69045d3d KZ	179	if (err_context)
	180	*err_context = _("bad response length");
	181	close(s);
	182	return -1;
	183	}
	184	ret = read_all(s, (char *) buf, reply_len);
	185
78314078	186	if ((ret > 0) && (op == UUIDD_OP_BULK_TIME_UUID)) {
a8f13198 PU	187	if (reply_len >= (int) (UUID_LEN + sizeof(int)))
a8f13198 PU	188	memcpy(buf + UUID_LEN, num, sizeof(int));
69045d3d KZ	189	else
	190	*num = -1;
	191	}
78314078	192	if ((ret > 0) && (op == UUIDD_OP_BULK_RANDOM_UUID)) {
faab2be3	193	if (reply_len >= (int) sizeof(int))
69045d3d KZ	194	memcpy(buf, num, sizeof(int));
	195	else
	196	*num = -1;
	197	}
	198
	199	close(s);
	200
	201	return ret;
	202	}
	203
c4536355 PU	204	/*
	205	* Exclusively create and open a pid file with path @pidfile_path
	206	*
	207	* Set cleanup_pidfile global variable for the cleanup
	208	* handler. @pidfile_path must not be NULL.
	209	*
	210	* Return file descriptor of the created pid_file.
	211	*/
	212	static int create_pidfile(const char *pidfile_path, int quiet)
69045d3d	213	{
c4536355 PU	214	int fd_pidfile;
c4536355 PU	215	struct flock fl;
69045d3d KZ	216
	217	fd_pidfile = open(pidfile_path, O_CREAT \| O_RDWR, 0664);
	218	if (fd_pidfile < 0) {
	219	if (!quiet)
960cf573 PU	220	fprintf(stderr, _("Failed to open/create %s: %m\n"),
960cf573 PU	221	pidfile_path);
41dc5bc0	222	exit(EXIT_FAILURE);
69045d3d KZ	223	}
69045d3d KZ	224	cleanup_pidfile = pidfile_path;
c4536355	225
69045d3d KZ	226	fl.l_type = F_WRLCK;
	227	fl.l_whence = SEEK_SET;
	228	fl.l_start = 0;
	229	fl.l_len = 0;
	230	fl.l_pid = 0;
	231	while (fcntl(fd_pidfile, F_SETLKW, &fl) < 0) {
	232	if ((errno == EAGAIN) \|\| (errno == EINTR))
	233	continue;
	234	if (!quiet)
960cf573	235	fprintf(stderr, _("Failed to lock %s: %m\n"), pidfile_path);
41dc5bc0	236	exit(EXIT_FAILURE);
69045d3d	237	}
c4536355 PU	238
	239	return fd_pidfile;
	240	}
	241
75a94e8b PU	242	/*
	243	* Create AF_UNIX, SOCK_STREAM socket and bind to @socket_path
	244	*
	245	* If @will_fork is true, then make sure the descriptor
	246	* of the socket is >2, so that it wont be later closed
	247	* during create_daemon().
	248	*
	249	* Return file descriptor corresponding to created socket.
	250	*/
	251	static int create_socket(const char *socket_path, int will_fork, int quiet)
c4536355	252	{
75a94e8b	253	struct sockaddr_un my_addr;
c4536355	254	mode_t save_umask;
75a94e8b	255	int s;
69045d3d KZ	256
	257	if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
	258	if (!quiet)
960cf573	259	fprintf(stderr, _("Couldn't create unix stream socket: %m"));
41dc5bc0	260	exit(EXIT_FAILURE);
69045d3d KZ	261	}
69045d3d KZ	262
fdb3e93c TT	263	/*
	264	* Make sure the socket isn't using fd numbers 0-2 to avoid it
	265	* getting closed by create_daemon()
	266	*/
75a94e8b	267	while (will_fork && s <= 2) {
fdb3e93c	268	s = dup(s);
2d169242	269	if (s < 0)
ea091bed	270	err(EXIT_FAILURE, "dup");
fdb3e93c TT	271	}
fdb3e93c TT	272
69045d3d KZ	273	/*
	274	* Create the address we will be binding to.
	275	*/
	276	my_addr.sun_family = AF_UNIX;
	277	strncpy(my_addr.sun_path, socket_path, sizeof(my_addr.sun_path));
f7c297b8 SK	278	my_addr.sun_path[sizeof(my_addr.sun_path) - 1] = '\0';
f7c297b8 SK	279	unlink(socket_path);
69045d3d KZ	280	save_umask = umask(0);
	281	if (bind(s, (const struct sockaddr *) &my_addr,
	282	sizeof(struct sockaddr_un)) < 0) {
	283	if (!quiet)
	284	fprintf(stderr,
960cf573	285	_("Couldn't bind unix socket %s: %m\n"), socket_path);
41dc5bc0	286	exit(EXIT_FAILURE);
69045d3d	287	}
f7c297b8	288	umask(save_umask);
75a94e8b	289	cleanup_socket = socket_path;
69045d3d	290
75a94e8b PU	291	return s;
	292	}
	293
	294	static void server_loop(const char socket_path, const char pidfile_path,
881a0f6b	295	const struct uuidd_cxt_t *uuidd_cxt)
75a94e8b PU	296	{
	297	struct sockaddr_un from_addr;
	298	socklen_t fromlen;
	299	int32_t reply_len = 0;
	300	uuid_t uu;
	301	char reply_buf[1024], *cp;
	302	char op, str[UUID_STR_LEN];
bbe289c4 PU	303	int i, ns, len, num;
bbe289c4 PU	304	int s = 0;
75a94e8b PU	305	int fd_pidfile = -1;
	306	int ret;
	307
bbe289c4	308	#ifdef USE_SOCKET_ACTIVATION
881a0f6b	309	if (!uuidd_cxt->no_sock) /* no_sock implies no_fork and no_pid */
bbe289c4 PU	310	#endif
bbe289c4 PU	311	{
75a94e8b	312
bbe289c4 PU	313	signal(SIGALRM, terminate_intr);
	314	alarm(30);
	315	if (pidfile_path)
881a0f6b	316	fd_pidfile = create_pidfile(pidfile_path, uuidd_cxt->quiet);
75a94e8b	317
bbe289c4 PU	318	ret = call_daemon(socket_path, UUIDD_OP_GETPID, reply_buf,
	319	sizeof(reply_buf), 0, NULL);
	320	if (ret > 0) {
881a0f6b	321	if (!uuidd_cxt->quiet)
18c68d70 PU	322	fprintf(stderr,
18c68d70 PU	323	_("uuidd daemon already running at pid %s\n"),
bbe289c4 PU	324	reply_buf);
	325	exit(EXIT_FAILURE);
	326	}
	327	alarm(0);
	328
881a0f6b PU	329	s = create_socket(socket_path,
	330	(!uuidd_cxt->debug \|\| !uuidd_cxt->no_fork),
	331	uuidd_cxt->quiet);
bbe289c4	332	if (listen(s, SOMAXCONN) < 0) {
881a0f6b	333	if (!uuidd_cxt->quiet)
bbe289c4 PU	334	fprintf(stderr, _("Couldn't listen on unix "
	335	"socket %s: %m\n"), socket_path);
	336	exit(EXIT_FAILURE);
	337	}
	338
881a0f6b	339	if (!uuidd_cxt->debug && !uuidd_cxt->no_fork)
bbe289c4 PU	340	create_daemon();
	341
	342	if (pidfile_path) {
	343	sprintf(reply_buf, "%8d\n", getpid());
	344	ignore_result( ftruncate(fd_pidfile, 0) );
	345	write_all(fd_pidfile, reply_buf, strlen(reply_buf));
	346	if (fd_pidfile > 1)
	347	close(fd_pidfile); /* Unlock the pid file */
	348	}
75a94e8b	349
69045d3d KZ	350	}
69045d3d KZ	351
69045d3d KZ	352	signal(SIGHUP, terminate_intr);
	353	signal(SIGINT, terminate_intr);
	354	signal(SIGTERM, terminate_intr);
	355	signal(SIGALRM, terminate_intr);
	356	signal(SIGPIPE, SIG_IGN);
	357
bbe289c4	358	#ifdef USE_SOCKET_ACTIVATION
881a0f6b	359	if (uuidd_cxt->no_sock) {
bbe289c4 PU	360	if (sd_listen_fds(0) != 1) {
	361	fprintf(stderr, _("No or too many file descriptors received.\n"));
	362	exit(EXIT_FAILURE);
	363	}
	364
	365	s = SD_LISTEN_FDS_START + 0;
f7c297b8	366	}
bbe289c4	367	#endif
69045d3d KZ	368
	369	while (1) {
	370	fromlen = sizeof(from_addr);
881a0f6b PU	371	if (uuidd_cxt->timeout > 0)
881a0f6b PU	372	alarm(uuidd_cxt->timeout);
69045d3d KZ	373	ns = accept(s, (struct sockaddr *) &from_addr, &fromlen);
	374	alarm(0);
	375	if (ns < 0) {
	376	if ((errno == EAGAIN) \|\| (errno == EINTR))
	377	continue;
2d169242	378	else
ea091bed	379	err(EXIT_FAILURE, "accept");
69045d3d KZ	380	}
	381	len = read(ns, &op, 1);
	382	if (len != 1) {
	383	if (len < 0)
	384	perror("read");
	385	else
18c68d70	386	fprintf(stderr, _("Error reading from client, "
69045d3d KZ	387	"len = %d\n"), len);
	388	goto shutdown_socket;
	389	}
78314078 PU	390	if ((op == UUIDD_OP_BULK_TIME_UUID) \|\|
78314078 PU	391	(op == UUIDD_OP_BULK_RANDOM_UUID)) {
69045d3d KZ	392	if (read_all(ns, (char *) &num, sizeof(num)) != 4)
69045d3d KZ	393	goto shutdown_socket;
881a0f6b	394	if (uuidd_cxt->debug)
18c68d70	395	fprintf(stderr, _("operation %d, incoming num = %d\n"),
69045d3d	396	op, num);
881a0f6b	397	} else if (uuidd_cxt->debug)
18c68d70	398	fprintf(stderr, _("operation %d\n"), op);
69045d3d	399
f7c297b8	400	switch (op) {
69045d3d KZ	401	case UUIDD_OP_GETPID:
69045d3d KZ	402	sprintf(reply_buf, "%d", getpid());
f7c297b8	403	reply_len = strlen(reply_buf) + 1;
69045d3d KZ	404	break;
	405	case UUIDD_OP_GET_MAXOP:
	406	sprintf(reply_buf, "%d", UUIDD_MAX_OP);
f7c297b8	407	reply_len = strlen(reply_buf) + 1;
69045d3d KZ	408	break;
	409	case UUIDD_OP_TIME_UUID:
	410	num = 1;
70b989c2	411	__uuid_generate_time(uu, &num);
881a0f6b	412	if (uuidd_cxt->debug) {
69045d3d	413	uuid_unparse(uu, str);
18c68d70	414	fprintf(stderr, _("Generated time UUID: %s\n"), str);
69045d3d KZ	415	}
	416	memcpy(reply_buf, uu, sizeof(uu));
	417	reply_len = sizeof(uu);
	418	break;
	419	case UUIDD_OP_RANDOM_UUID:
	420	num = 1;
c544aa2c	421	__uuid_generate_random(uu, &num);
881a0f6b	422	if (uuidd_cxt->debug) {
69045d3d	423	uuid_unparse(uu, str);
18c68d70	424	fprintf(stderr, _("Generated random UUID: %s\n"), str);
69045d3d KZ	425	}
	426	memcpy(reply_buf, uu, sizeof(uu));
	427	reply_len = sizeof(uu);
	428	break;
	429	case UUIDD_OP_BULK_TIME_UUID:
70b989c2	430	__uuid_generate_time(uu, &num);
881a0f6b	431	if (uuidd_cxt->debug) {
69045d3d	432	uuid_unparse(uu, str);
18c68d70 PU	433	fprintf(stderr, P_("Generated time UUID %s "
	434	"and %d following\n",
	435	"Generated time UUID %s "
	436	"and %d following\n", num - 1),
0149cd84	437	str, num - 1);
69045d3d KZ	438	}
	439	memcpy(reply_buf, uu, sizeof(uu));
	440	reply_len = sizeof(uu);
f7c297b8	441	memcpy(reply_buf + reply_len, &num, sizeof(num));
69045d3d KZ	442	reply_len += sizeof(num);
	443	break;
	444	case UUIDD_OP_BULK_RANDOM_UUID:
	445	if (num < 0)
	446	num = 1;
	447	if (num > 1000)
	448	num = 1000;
f7c297b8 SK	449	if (num * UUID_LEN > (int) (sizeof(reply_buf) - sizeof(num)))
f7c297b8 SK	450	num = (sizeof(reply_buf) - sizeof(num)) / UUID_LEN;
70b989c2	451	__uuid_generate_random((unsigned char *) reply_buf +
c544aa2c	452	sizeof(num), &num);
881a0f6b	453	if (uuidd_cxt->debug) {
18c68d70 PU	454	fprintf(stderr, P_("Generated %d UUID:\n",
18c68d70 PU	455	"Generated %d UUIDs:\n", num), num);
f7c297b8 SK	456	for (i = 0, cp = reply_buf + sizeof(num);
	457	i < num;
	458	i++, cp += UUID_LEN) {
69045d3d	459	uuid_unparse((unsigned char *)cp, str);
18c68d70	460	fprintf(stderr, "\t%s\n", str);
69045d3d KZ	461	}
69045d3d KZ	462	}
a8f13198	463	reply_len = (num * UUID_LEN) + sizeof(num);
69045d3d KZ	464	memcpy(reply_buf, &num, sizeof(num));
	465	break;
	466	default:
881a0f6b	467	if (uuidd_cxt->debug)
18c68d70	468	fprintf(stderr, _("Invalid operation %d\n"), op);
69045d3d KZ	469	goto shutdown_socket;
	470	}
	471	write_all(ns, (char *) &reply_len, sizeof(reply_len));
	472	write_all(ns, reply_buf, reply_len);
	473	shutdown_socket:
	474	close(ns);
	475	}
	476	}
	477
2fb35353 SK	478	static void __attribute__ ((__noreturn__)) unexpected_size(int size)
	479	{
	480	errx(EXIT_FAILURE, _("Unexpected reply length from server %d"), size);
	481	}
	482
69045d3d KZ	483	int main(int argc, char **argv)
	484	{
	485	const char *socket_path = UUIDD_SOCKET_PATH;
0abfbd9c PU	486	const char *pidfile_path = NULL;
0abfbd9c PU	487	const char *pidfile_path_param = NULL;
69045d3d KZ	488	const char *err_context;
69045d3d KZ	489	char buf[1024], *cp;
a8f13198	490	char str[UUID_STR_LEN], *tmp;
69045d3d	491	uuid_t uu;
69045d3d	492	int i, c, ret;
4b1cf29d KZ	493	int do_type = 0, do_kill = 0, num = 0;
	494	int no_pid = 0;
	495	int s_flag = 0;
	496
	497	struct uuidd_cxt_t uuidd_cxt = { .timeout = 0 };
69045d3d	498
f0ef0b58 SK	499	static const struct option longopts[] = {
	500	{"pid", required_argument, NULL, 'p'},
	501	{"socket", required_argument, NULL, 's'},
	502	{"timeout", required_argument, NULL, 'T'},
	503	{"kill", no_argument, NULL, 'k'},
	504	{"random", no_argument, NULL, 'r'},
	505	{"time", no_argument, NULL, 't'},
	506	{"uuids", required_argument, NULL, 'n'},
0abfbd9c	507	{"no-pid", no_argument, NULL, 'P'},
e1cf3ebe	508	{"no-fork", no_argument, NULL, 'F'},
bbe289c4	509	{"socket-activation", no_argument, NULL, 'S'},
f0ef0b58 SK	510	{"debug", no_argument, NULL, 'd'},
	511	{"quiet", no_argument, NULL, 'q'},
	512	{"version", no_argument, NULL, 'V'},
	513	{"help", no_argument, NULL, 'h'},
	514	{NULL, 0, NULL, 0}
	515	};
	516
69045d3d KZ	517	setlocale(LC_ALL, "");
	518	bindtextdomain(PACKAGE, LOCALEDIR);
	519	textdomain(PACKAGE);
c05a80ca	520	atexit(close_stdout);
69045d3d	521
f0ef0b58	522	while ((c =
bbe289c4	523	getopt_long(argc, argv, "p:s:T:krtn:PFSdqVh", longopts,
f0ef0b58	524	NULL)) != -1) {
69045d3d KZ	525	switch (c) {
69045d3d KZ	526	case 'd':
4b1cf29d	527	uuidd_cxt.debug = 1;
69045d3d KZ	528	break;
	529	case 'k':
	530	do_kill++;
69045d3d KZ	531	break;
	532	case 'n':
	533	num = strtol(optarg, &tmp, 0);
38cf5001	534	if ((num < 1) \|\| *tmp) {
69045d3d	535	fprintf(stderr, _("Bad number: %s\n"), optarg);
41dc5bc0	536	return EXIT_FAILURE;
69045d3d	537	}
b747e886	538	break;
69045d3d	539	case 'p':
0abfbd9c	540	pidfile_path_param = optarg;
0abfbd9c PU	541	break;
	542	case 'P':
	543	no_pid = 1;
69045d3d	544	break;
e1cf3ebe	545	case 'F':
4b1cf29d	546	uuidd_cxt.no_fork = 1;
e1cf3ebe	547	break;
bbe289c4 PU	548	case 'S':
bbe289c4 PU	549	#ifdef USE_SOCKET_ACTIVATION
4b1cf29d KZ	550	uuidd_cxt.no_sock = 1;
4b1cf29d KZ	551	uuidd_cxt.no_fork = 1;
bbe289c4 PU	552	no_pid = 1;
	553	#else
	554	fprintf(stderr,
	555	_("uuidd has been built without support for socket activation.\n"));
	556	return EXIT_FAILURE;
	557	#endif
	558	break;
69045d3d	559	case 'q':
4b1cf29d	560	uuidd_cxt.quiet = 1;
69045d3d	561	break;
3c062294 BS	562	case 'r':
3c062294 BS	563	do_type = UUIDD_OP_RANDOM_UUID;
3c062294	564	break;
69045d3d KZ	565	case 's':
69045d3d KZ	566	socket_path = optarg;
bbe289c4	567	s_flag = 1;
69045d3d KZ	568	break;
	569	case 't':
	570	do_type = UUIDD_OP_TIME_UUID;
69045d3d KZ	571	break;
69045d3d KZ	572	case 'T':
4b1cf29d KZ	573	uuidd_cxt.timeout = strtol(optarg, &tmp, 0);
4b1cf29d KZ	574	if (uuidd_cxt.timeout < 0 \|\| *tmp) {
69045d3d	575	fprintf(stderr, _("Bad number: %s\n"), optarg);
41dc5bc0	576	return EXIT_FAILURE;
69045d3d KZ	577	}
69045d3d KZ	578	break;
f0ef0b58	579	case 'V':
e421313d	580	printf(UTIL_LINUX_VERSION);
f0ef0b58 SK	581	return EXIT_SUCCESS;
	582	case 'h':
	583	usage(stdout);
69045d3d	584	default:
f0ef0b58	585	usage(stderr);
69045d3d KZ	586	}
69045d3d KZ	587	}
0abfbd9c	588
4b1cf29d	589	if (no_pid && pidfile_path_param && !uuidd_cxt.quiet)
0abfbd9c PU	590	fprintf(stderr, _("Both --pid and --no-pid specified. "
	591	"Ignoring --no-pid.\n"));
	592
	593	if (!no_pid && !pidfile_path_param)
	594	pidfile_path = UUIDD_PIDFILE_PATH;
	595	else if (pidfile_path_param)
	596	pidfile_path = pidfile_path_param;
	597
bbe289c4	598	/* custom socket path and socket-activation make no sense */
4b1cf29d	599	if (s_flag && uuidd_cxt.no_sock && !uuidd_cxt.quiet)
bbe289c4 PU	600	fprintf(stderr, _("Both --socket-activation and --socket specified. "
bbe289c4 PU	601	"Ignoring --socket\n"));
0abfbd9c	602
69045d3d	603	if (num && do_type) {
f7c297b8	604	ret = call_daemon(socket_path, do_type + 2, buf,
69045d3d KZ	605	sizeof(buf), &num, &err_context);
69045d3d KZ	606	if (ret < 0) {
960cf573	607	printf(_("Error calling uuidd daemon (%s): %m\n"), err_context);
41dc5bc0	608	return EXIT_FAILURE;
69045d3d KZ	609	}
	610	if (do_type == UUIDD_OP_TIME_UUID) {
	611	if (ret != sizeof(uu) + sizeof(num))
2fb35353	612	unexpected_size(ret);
69045d3d KZ	613
	614	uuid_unparse((unsigned char *) buf, str);
	615
0149cd84 BS	616	printf(P_("%s and %d subsequent UUID\n",
	617	"%s and %d subsequent UUIDs\n", num - 1),
	618	str, num - 1);
69045d3d	619	} else {
333ec749	620	printf(_("List of UUIDs:\n"));
69045d3d	621	cp = buf + 4;
f7c297b8	622	if (ret != (int) (sizeof(num) + num * sizeof(uu)))
2fb35353	623	unexpected_size(ret);
f7c297b8	624	for (i = 0; i < num; i++, cp += UUID_LEN) {
69045d3d KZ	625	uuid_unparse((unsigned char *) cp, str);
	626	printf("\t%s\n", str);
	627	}
	628	}
41dc5bc0	629	return EXIT_SUCCESS;
69045d3d KZ	630	}
	631	if (do_type) {
	632	ret = call_daemon(socket_path, do_type, (char *) &uu,
	633	sizeof(uu), 0, &err_context);
	634	if (ret < 0) {
960cf573	635	printf(_("Error calling uuidd daemon (%s): %m\n"), err_context);
41dc5bc0	636	return EXIT_FAILURE;
69045d3d	637	}
2fb35353 SK	638	if (ret != sizeof(uu))
	639	unexpected_size(ret);
	640
69045d3d KZ	641	uuid_unparse(uu, str);
	642
	643	printf("%s\n", str);
41dc5bc0	644	return EXIT_SUCCESS;
69045d3d KZ	645	}
	646
	647	if (do_kill) {
2e9b39ef	648	ret = call_daemon(socket_path, UUIDD_OP_GETPID, buf, sizeof(buf), 0, NULL);
69045d3d KZ	649	if ((ret > 0) && ((do_kill = atoi((char *) buf)) > 0)) {
	650	ret = kill(do_kill, SIGTERM);
	651	if (ret < 0) {
4b1cf29d	652	if (!uuidd_cxt.quiet)
69045d3d KZ	653	fprintf(stderr,
69045d3d KZ	654	_("Couldn't kill uuidd running "
960cf573	655	"at pid %d: %m\n"), do_kill);
41dc5bc0	656	return EXIT_FAILURE;
69045d3d	657	}
4b1cf29d	658	if (!uuidd_cxt.quiet)
69045d3d KZ	659	printf(_("Killed uuidd running at pid %d\n"),
	660	do_kill);
	661	}
41dc5bc0	662	return EXIT_SUCCESS;
69045d3d KZ	663	}
69045d3d KZ	664
881a0f6b	665	server_loop(socket_path, pidfile_path, &uuidd_cxt);
41dc5bc0	666	return EXIT_SUCCESS;
69045d3d	667	}