[thirdparty/systemd.git] / src / udev / udevadm-control.c

/*
 * Copyright (C) 2005-2011 Kay Sievers <kay@vrfy.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <time.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/un.h>

#include "udev.h"
#include "udev-util.h"

static void print_help(void) {
        printf("Usage: udevadm control COMMAND\n"
                "  -e,--exit                 instruct the daemon to cleanup and exit\n"
                "  -l,--log-priority=LEVEL   set the udev log level for the daemon\n"
                "  -s,--stop-exec-queue      do not execute events, queue only\n"
                "  -S,--start-exec-queue     execute events, flush queue\n"
                "  -R,--reload               reload rules and databases\n"
                "  -p,--property=KEY=VALUE   set a global property for all events\n"
                "  -m,--children-max=N       maximum number of children\n"
                "     --timeout=SECONDS      maximum time to block for a reply\n"
                "  -h,--help                 print this help text\n\n");
}

static int adm_control(struct udev *udev, int argc, char *argv[]) {
        _cleanup_udev_ctrl_unref_ struct udev_ctrl *uctrl = NULL;
        int timeout = 60;
        int rc = 1, c;

        static const struct option options[] = {
                { "exit",             no_argument,       NULL, 'e' },
                { "log-priority",     required_argument, NULL, 'l' },
                { "stop-exec-queue",  no_argument,       NULL, 's' },
                { "start-exec-queue", no_argument,       NULL, 'S' },
                { "reload",           no_argument,       NULL, 'R' },
                { "reload-rules",     no_argument,       NULL, 'R' }, /* alias for -R */
                { "property",         required_argument, NULL, 'p' },
                { "env",              required_argument, NULL, 'p' }, /* alias for -p */
                { "children-max",     required_argument, NULL, 'm' },
                { "timeout",          required_argument, NULL, 't' },
                { "help",             no_argument,       NULL, 'h' },
                {}
        };

        if (getuid() != 0) {
                fprintf(stderr, "root privileges required\n");
                return 1;
        }

        uctrl = udev_ctrl_new(udev);
        if (uctrl == NULL)
                return 2;

        while ((c = getopt_long(argc, argv, "el:sSRp:m:h", options, NULL)) >= 0)
                switch (c) {
                case 'e':
                        if (udev_ctrl_send_exit(uctrl, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                case 'l': {
                        int i;

                        i = util_log_priority(optarg);
                        if (i < 0) {
                                fprintf(stderr, "invalid number '%s'\n", optarg);
                                return rc;
                        }
                        if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                }
                case 's':
                        if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                case 'S':
                        if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                case 'R':
                        if (udev_ctrl_send_reload(uctrl, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                case 'p':
                        if (strchr(optarg, '=') == NULL) {
                                fprintf(stderr, "expect <KEY>=<value> instead of '%s'\n", optarg);
                                return rc;
                        }
                        if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                case 'm': {
                        char *endp;
                        int i;

                        i = strtoul(optarg, &endp, 0);
                        if (endp[0] != '\0' || i < 1) {
                                fprintf(stderr, "invalid number '%s'\n", optarg);
                                return rc;
                        }
                        if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0)
                                rc = 2;
                        else
                                rc = 0;
                        break;
                }
                case 't': {
                        int seconds;

                        seconds = atoi(optarg);
                        if (seconds >= 0)
                                timeout = seconds;
                        else
                                fprintf(stderr, "invalid timeout value\n");
                        break;
                }
                case 'h':
                        print_help();
                        rc = 0;
                        break;
                }

        if (optind < argc)
                fprintf(stderr, "Extraneous argument: %s\n", argv[optind]);
        else if (optind == 1)
                fprintf(stderr, "Option missing\n");
        return rc;
}

const struct udevadm_cmd udevadm_control = {
        .name = "control",
        .cmd = adm_control,
        .help = "control the udev daemon",
};
Commit	Line	Data
3b47c739	1	/*
1298001e	2	* Copyright (C) 2005-2011 Kay Sievers <kay@vrfy.org>
3b47c739	3	*
55e9959b KS	4	* This program is free software: you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation, either version 2 of the License, or
	7	* (at your option) any later version.
3b47c739	8	*
55e9959b KS	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
3b47c739 KS	13	*/
3b47c739 KS	14
3b47c739 KS	15	#include <time.h>
	16	#include <errno.h>
	17	#include <stdio.h>
	18	#include <stdlib.h>
	19	#include <stddef.h>
	20	#include <string.h>
	21	#include <unistd.h>
2b725651	22	#include <getopt.h>
9571122e KS	23	#include <sys/types.h>
	24	#include <sys/socket.h>
	25	#include <sys/wait.h>
	26	#include <sys/un.h>
3b47c739 KS	27
3b47c739 KS	28	#include "udev.h"
44433ebd	29	#include "udev-util.h"
d59f11e1	30
9ec6e95b	31	static void print_help(void) {
912541b0	32	printf("Usage: udevadm control COMMAND\n"
7643ac9a ZJS	33	" -e,--exit instruct the daemon to cleanup and exit\n"
	34	" -l,--log-priority=LEVEL set the udev log level for the daemon\n"
	35	" -s,--stop-exec-queue do not execute events, queue only\n"
	36	" -S,--start-exec-queue execute events, flush queue\n"
	37	" -R,--reload reload rules and databases\n"
	38	" -p,--property=KEY=VALUE set a global property for all events\n"
	39	" -m,--children-max=N maximum number of children\n"
	40	" --timeout=SECONDS maximum time to block for a reply\n"
	41	" -h,--help print this help text\n\n");
d59f11e1	42	}
3b47c739	43
9ec6e95b	44	static int adm_control(struct udev udev, int argc, char argv[]) {
44433ebd	45	_cleanup_udev_ctrl_unref_ struct udev_ctrl *uctrl = NULL;
912541b0	46	int timeout = 60;
7643ac9a	47	int rc = 1, c;
2b725651	48
912541b0	49	static const struct option options[] = {
7643ac9a ZJS	50	{ "exit", no_argument, NULL, 'e' },
	51	{ "log-priority", required_argument, NULL, 'l' },
	52	{ "stop-exec-queue", no_argument, NULL, 's' },
	53	{ "start-exec-queue", no_argument, NULL, 'S' },
	54	{ "reload", no_argument, NULL, 'R' },
	55	{ "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */
	56	{ "property", required_argument, NULL, 'p' },
	57	{ "env", required_argument, NULL, 'p' }, /* alias for -p */
	58	{ "children-max", required_argument, NULL, 'm' },
	59	{ "timeout", required_argument, NULL, 't' },
	60	{ "help", no_argument, NULL, 'h' },
912541b0 KS	61	{}
912541b0 KS	62	};
3b47c739	63
912541b0 KS	64	if (getuid() != 0) {
	65	fprintf(stderr, "root privileges required\n");
	66	return 1;
	67	}
2b725651	68
912541b0 KS	69	uctrl = udev_ctrl_new(udev);
	70	if (uctrl == NULL)
	71	return 2;
2b725651	72
7643ac9a ZJS	73	while ((c = getopt_long(argc, argv, "el:sSRp:m:h", options, NULL)) >= 0)
7643ac9a ZJS	74	switch (c) {
912541b0 KS	75	case 'e':
	76	if (udev_ctrl_send_exit(uctrl, timeout) < 0)
	77	rc = 2;
	78	else
	79	rc = 0;
	80	break;
	81	case 'l': {
	82	int i;
ff2c503d	83
912541b0 KS	84	i = util_log_priority(optarg);
	85	if (i < 0) {
	86	fprintf(stderr, "invalid number '%s'\n", optarg);
44433ebd	87	return rc;
912541b0 KS	88	}
	89	if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0)
	90	rc = 2;
	91	else
	92	rc = 0;
	93	break;
	94	}
	95	case 's':
	96	if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0)
	97	rc = 2;
	98	else
	99	rc = 0;
	100	break;
	101	case 'S':
	102	if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0)
	103	rc = 2;
	104	else
	105	rc = 0;
	106	break;
	107	case 'R':
	108	if (udev_ctrl_send_reload(uctrl, timeout) < 0)
	109	rc = 2;
	110	else
	111	rc = 0;
	112	break;
	113	case 'p':
	114	if (strchr(optarg, '=') == NULL) {
	115	fprintf(stderr, "expect <KEY>=<value> instead of '%s'\n", optarg);
44433ebd	116	return rc;
912541b0 KS	117	}
	118	if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0)
	119	rc = 2;
	120	else
	121	rc = 0;
	122	break;
	123	case 'm': {
	124	char *endp;
	125	int i;
ff2c503d	126
912541b0 KS	127	i = strtoul(optarg, &endp, 0);
	128	if (endp[0] != '\0' \|\| i < 1) {
	129	fprintf(stderr, "invalid number '%s'\n", optarg);
44433ebd	130	return rc;
912541b0 KS	131	}
	132	if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0)
	133	rc = 2;
	134	else
	135	rc = 0;
	136	break;
	137	}
	138	case 't': {
	139	int seconds;
ff2c503d	140
912541b0 KS	141	seconds = atoi(optarg);
	142	if (seconds >= 0)
	143	timeout = seconds;
	144	else
	145	fprintf(stderr, "invalid timeout value\n");
	146	break;
	147	}
	148	case 'h':
	149	print_help();
	150	rc = 0;
	151	break;
	152	}
5cc4112e	153
7643ac9a ZJS	154	if (optind < argc)
7643ac9a ZJS	155	fprintf(stderr, "Extraneous argument: %s\n", argv[optind]);
912541b0	156	else if (optind == 1)
7643ac9a	157	fprintf(stderr, "Option missing\n");
912541b0	158	return rc;
3b47c739	159	}
1985c76e KS	160
1985c76e KS	161	const struct udevadm_cmd udevadm_control = {
912541b0 KS	162	.name = "control",
	163	.cmd = adm_control,
	164	.help = "control the udev daemon",
1985c76e	165	};