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

/* SPDX-License-Identifier: GPL-2.0+ */

#include <errno.h>
#include <getopt.h>

#include "sd-device.h"
#include "sd-event.h"

#include "device-enumerator-private.h"
#include "device-private.h"
#include "fd-util.h"
#include "fileio.h"
#include "path-util.h"
#include "process-util.h"
#include "set.h"
#include "string-util.h"
#include "strv.h"
#include "udevadm.h"
#include "udevadm-util.h"
#include "udev-ctrl.h"
#include "virt.h"

static bool arg_verbose = false;
static bool arg_dry_run = false;

static int exec_list(sd_device_enumerator *e, const char *action, Set *settle_set) {
        sd_device *d;
        int r, ret = 0;

        FOREACH_DEVICE_AND_SUBSYSTEM(e, d) {
                _cleanup_free_ char *filename = NULL;
                const char *syspath;

                if (sd_device_get_syspath(d, &syspath) < 0)
                        continue;

                if (arg_verbose)
                        printf("%s\n", syspath);
                if (arg_dry_run)
                        continue;

                filename = path_join(syspath, "uevent");
                if (!filename)
                        return log_oom();

                r = write_string_file(filename, action, WRITE_STRING_FILE_DISABLE_BUFFER);
                if (r < 0) {
                        log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_ERR, r,
                                       "Failed to write '%s' to '%s': %m", action, filename);
                        if (ret == 0 && r != -ENOENT)
                                ret = r;
                        continue;
                }

                if (settle_set) {
                        r = set_put_strdup(settle_set, syspath);
                        if (r < 0)
                                return log_oom();
                }
        }

        return ret;
}

static int device_monitor_handler(sd_device_monitor *m, sd_device *dev, void *userdata) {
        _cleanup_free_ char *val = NULL;
        Set *settle_set = userdata;
        const char *syspath;

        assert(dev);
        assert(settle_set);

        if (sd_device_get_syspath(dev, &syspath) < 0)
                return 0;

        if (arg_verbose)
                printf("settle %s\n", syspath);

        val = set_remove(settle_set, syspath);
        if (!val)
                log_debug("Got epoll event on syspath %s not present in syspath set", syspath);

        if (set_isempty(settle_set))
                return sd_event_exit(sd_device_monitor_get_event(m), 0);

        return 0;
}

static char* keyval(const char *str, const char **key, const char **val) {
        char *buf, *pos;

        buf = strdup(str);
        if (!buf)
                return NULL;

        pos = strchr(buf, '=');
        if (pos) {
                pos[0] = 0;
                pos++;
        }

        *key = buf;
        *val = pos;

        return buf;
}

static int help(void) {
        printf("%s trigger [OPTIONS] DEVPATH\n\n"
               "Request events from the kernel.\n\n"
               "  -h --help                         Show this help\n"
               "  -V --version                      Show package version\n"
               "  -v --verbose                      Print the list of devices while running\n"
               "  -n --dry-run                      Do not actually trigger the events\n"
               "  -t --type=                        Type of events to trigger\n"
               "          devices                     sysfs devices (default)\n"
               "          subsystems                  sysfs subsystems and drivers\n"
               "  -c --action=ACTION                Event action value, default is \"change\"\n"
               "  -s --subsystem-match=SUBSYSTEM    Trigger devices from a matching subsystem\n"
               "  -S --subsystem-nomatch=SUBSYSTEM  Exclude devices from a matching subsystem\n"
               "  -a --attr-match=FILE[=VALUE]      Trigger devices with a matching attribute\n"
               "  -A --attr-nomatch=FILE[=VALUE]    Exclude devices with a matching attribute\n"
               "  -p --property-match=KEY=VALUE     Trigger devices with a matching property\n"
               "  -g --tag-match=KEY=VALUE          Trigger devices with a matching property\n"
               "  -y --sysname-match=NAME           Trigger devices with this /sys path\n"
               "     --name-match=NAME              Trigger devices with this /dev name\n"
               "  -b --parent-match=NAME            Trigger devices with that parent device\n"
               "  -w --settle                       Wait for the triggered events to complete\n"
               "     --wait-daemon[=SECONDS]        Wait for udevd daemon to be initialized\n"
               "                                    before triggering uevents\n"
               , program_invocation_short_name);

        return 0;
}

int trigger_main(int argc, char *argv[], void *userdata) {
        enum {
                ARG_NAME = 0x100,
                ARG_PING,
        };

        static const struct option options[] = {
                { "verbose",           no_argument,       NULL, 'v'      },
                { "dry-run",           no_argument,       NULL, 'n'      },
                { "type",              required_argument, NULL, 't'      },
                { "action",            required_argument, NULL, 'c'      },
                { "subsystem-match",   required_argument, NULL, 's'      },
                { "subsystem-nomatch", required_argument, NULL, 'S'      },
                { "attr-match",        required_argument, NULL, 'a'      },
                { "attr-nomatch",      required_argument, NULL, 'A'      },
                { "property-match",    required_argument, NULL, 'p'      },
                { "tag-match",         required_argument, NULL, 'g'      },
                { "sysname-match",     required_argument, NULL, 'y'      },
                { "name-match",        required_argument, NULL, ARG_NAME },
                { "parent-match",      required_argument, NULL, 'b'      },
                { "settle",            no_argument,       NULL, 'w'      },
                { "wait-daemon",       optional_argument, NULL, ARG_PING },
                { "version",           no_argument,       NULL, 'V'      },
                { "help",              no_argument,       NULL, 'h'      },
                {}
        };
        enum {
                TYPE_DEVICES,
                TYPE_SUBSYSTEMS,
        } device_type = TYPE_DEVICES;
        const char *action = "change";
        _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
        _cleanup_(sd_device_monitor_unrefp) sd_device_monitor *m = NULL;
        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
        _cleanup_set_free_free_ Set *settle_set = NULL;
        usec_t ping_timeout_usec = 5 * USEC_PER_SEC;
        bool settle = false, ping = false;
        int c, r;

        if (running_in_chroot() > 0) {
                log_info("Running in chroot, ignoring request.");
                return 0;
        }

        r = sd_device_enumerator_new(&e);
        if (r < 0)
                return r;

        r = sd_device_enumerator_allow_uninitialized(e);
        if (r < 0)
                return r;

        while ((c = getopt_long(argc, argv, "vnt:c:s:S:a:A:p:g:y:b:wVh", options, NULL)) >= 0) {
                _cleanup_free_ char *buf = NULL;
                const char *key, *val;

                switch (c) {
                case 'v':
                        arg_verbose = true;
                        break;
                case 'n':
                        arg_dry_run = true;
                        break;
                case 't':
                        if (streq(optarg, "devices"))
                                device_type = TYPE_DEVICES;
                        else if (streq(optarg, "subsystems"))
                                device_type = TYPE_SUBSYSTEMS;
                        else
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown type --type=%s", optarg);
                        break;
                case 'c':
                        if (device_action_from_string(optarg) < 0)
                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown action '%s'", optarg);

                        action = optarg;
                        break;
                case 's':
                        r = sd_device_enumerator_add_match_subsystem(e, optarg, true);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add subsystem match '%s': %m", optarg);
                        break;
                case 'S':
                        r = sd_device_enumerator_add_match_subsystem(e, optarg, false);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add negative subsystem match '%s': %m", optarg);
                        break;
                case 'a':
                        buf = keyval(optarg, &key, &val);
                        if (!buf)
                                return log_oom();
                        r = sd_device_enumerator_add_match_sysattr(e, key, val, true);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add sysattr match '%s=%s': %m", key, val);
                        break;
                case 'A':
                        buf = keyval(optarg, &key, &val);
                        if (!buf)
                                return log_oom();
                        r = sd_device_enumerator_add_match_sysattr(e, key, val, false);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add negative sysattr match '%s=%s': %m", key, val);
                        break;
                case 'p':
                        buf = keyval(optarg, &key, &val);
                        if (!buf)
                                return log_oom();
                        r = sd_device_enumerator_add_match_property(e, key, val);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add property match '%s=%s': %m", key, val);
                        break;
                case 'g':
                        r = sd_device_enumerator_add_match_tag(e, optarg);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add tag match '%s': %m", optarg);
                        break;
                case 'y':
                        r = sd_device_enumerator_add_match_sysname(e, optarg);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add sysname match '%s': %m", optarg);
                        break;
                case 'b': {
                        _cleanup_(sd_device_unrefp) sd_device *dev = NULL;

                        r = find_device(optarg, "/sys", &dev);
                        if (r < 0)
                                return log_error_errno(r, "Failed to open the device '%s': %m", optarg);

                        r = device_enumerator_add_match_parent_incremental(e, dev);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add parent match '%s': %m", optarg);
                        break;
                }
                case 'w':
                        settle = true;
                        break;

                case ARG_NAME: {
                        _cleanup_(sd_device_unrefp) sd_device *dev = NULL;

                        r = find_device(optarg, "/dev/", &dev);
                        if (r < 0)
                                return log_error_errno(r, "Failed to open the device '%s': %m", optarg);

                        r = device_enumerator_add_match_parent_incremental(e, dev);
                        if (r < 0)
                                return log_error_errno(r, "Failed to add parent match '%s': %m", optarg);
                        break;
                }

                case ARG_PING: {
                        ping = true;
                        if (optarg) {
                                r = parse_sec(optarg, &ping_timeout_usec);
                                if (r < 0)
                                        log_error_errno(r, "Failed to parse timeout value '%s', ignoring: %m", optarg);
                        }
                        break;
                }

                case 'V':
                        return print_version();
                case 'h':
                        return help();
                case '?':
                        return -EINVAL;
                default:
                        assert_not_reached("Unknown option");
                }
        }

        if (ping) {
                _cleanup_(udev_ctrl_unrefp) struct udev_ctrl *uctrl = NULL;

                r = udev_ctrl_new(&uctrl);
                if (r < 0)
                        return log_error_errno(r, "Failed to initialize udev control: %m");

                r = udev_ctrl_send_ping(uctrl);
                if (r < 0)
                        return log_error_errno(r, "Failed to connect to udev daemon: %m");

                r = udev_ctrl_wait(uctrl, ping_timeout_usec);
                if (r < 0)
                        return log_error_errno(r, "Failed to wait for daemon to reply: %m");
        }

        for (; optind < argc; optind++) {
                _cleanup_(sd_device_unrefp) sd_device *dev = NULL;

                r = find_device(argv[optind], NULL, &dev);
                if (r < 0)
                        return log_error_errno(r, "Failed to open the device '%s': %m", argv[optind]);

                r = device_enumerator_add_match_parent_incremental(e, dev);
                if (r < 0)
                        return log_error_errno(r, "Failed to add parent match '%s': %m", argv[optind]);
        }

        if (settle) {
                settle_set = set_new(&string_hash_ops);
                if (!settle_set)
                        return log_oom();

                r = sd_event_default(&event);
                if (r < 0)
                        return log_error_errno(r, "Failed to get default event: %m");

                r = sd_device_monitor_new(&m);
                if (r < 0)
                        return log_error_errno(r, "Failed to create device monitor object: %m");

                r = sd_device_monitor_attach_event(m, event);
                if (r < 0)
                        return log_error_errno(r, "Failed to attach event to device monitor: %m");

                r = sd_device_monitor_start(m, device_monitor_handler, settle_set);
                if (r < 0)
                        return log_error_errno(r, "Failed to start device monitor: %m");
        }

        switch (device_type) {
        case TYPE_SUBSYSTEMS:
                r = device_enumerator_scan_subsystems(e);
                if (r < 0)
                        return log_error_errno(r, "Failed to scan subsystems: %m");
                break;
        case TYPE_DEVICES:
                r = device_enumerator_scan_devices(e);
                if (r < 0)
                        return log_error_errno(r, "Failed to scan devices: %m");
                break;
        default:
                assert_not_reached("Unknown device type");
        }
        r = exec_list(e, action, settle_set);
        if (r < 0)
                return r;

        if (event && !set_isempty(settle_set)) {
                r = sd_event_loop(event);
                if (r < 0)
                        return log_error_errno(r, "Event loop failed: %m");
        }

        return 0;
}
Commit	Line	Data
e7145211	1	/* SPDX-License-Identifier: GPL-2.0+ */
0d5be398	2
07630cea	3	#include <errno.h>
07630cea	4	#include <getopt.h>
fb3d8e9f YW	5
	6	#include "sd-device.h"
	7	#include "sd-event.h"
0d5be398	8
13aca847	9	#include "device-enumerator-private.h"
dcee4a13	10	#include "device-private.h"
792cc203	11	#include "fd-util.h"
92c40e1d	12	#include "fileio.h"
c7d942d6	13	#include "path-util.h"
2001622c	14	#include "process-util.h"
792cc203	15	#include "set.h"
07630cea	16	#include "string-util.h"
13aca847	17	#include "strv.h"
3d05193e	18	#include "udevadm.h"
d6170d27	19	#include "udevadm-util.h"
2001622c	20	#include "udev-ctrl.h"
c494b739	21	#include "virt.h"
0d5be398	22
13aca847 YW	23	static bool arg_verbose = false;
13aca847 YW	24	static bool arg_dry_run = false;
c48622cc	25
13aca847 YW	26	static int exec_list(sd_device_enumerator e, const char action, Set *settle_set) {
13aca847 YW	27	sd_device *d;
97afc035	28	int r, ret = 0;
912541b0	29
13aca847	30	FOREACH_DEVICE_AND_SUBSYSTEM(e, d) {
c7d942d6	31	_cleanup_free_ char *filename = NULL;
c7d942d6	32	const char *syspath;
912541b0	33
13aca847 YW	34	if (sd_device_get_syspath(d, &syspath) < 0)
	35	continue;
	36
	37	if (arg_verbose)
792cc203	38	printf("%s\n", syspath);
13aca847	39	if (arg_dry_run)
912541b0	40	continue;
792cc203	41
62a85ee0	42	filename = path_join(syspath, "uevent");
c7d942d6 YW	43	if (!filename)
	44	return log_oom();
	45
92c40e1d YW	46	r = write_string_file(filename, action, WRITE_STRING_FILE_DISABLE_BUFFER);
92c40e1d YW	47	if (r < 0) {
97afc035 ZJS	48	log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_ERR, r,
	49	"Failed to write '%s' to '%s': %m", action, filename);
	50	if (ret == 0 && r != -ENOENT)
	51	ret = r;
912541b0	52	continue;
92c40e1d	53	}
1b113391	54
6bcc09be ZJS	55	if (settle_set) {
	56	r = set_put_strdup(settle_set, syspath);
	57	if (r < 0)
	58	return log_oom();
	59	}
912541b0	60	}
6bcc09be	61
97afc035	62	return ret;
0d5be398 KS	63	}
0d5be398 KS	64
fb3d8e9f	65	static int device_monitor_handler(sd_device_monitor m, sd_device dev, void *userdata) {
1f682e24	66	_cleanup_free_ char *val = NULL;
fb3d8e9f YW	67	Set *settle_set = userdata;
	68	const char *syspath;
	69
	70	assert(dev);
	71	assert(settle_set);
	72
	73	if (sd_device_get_syspath(dev, &syspath) < 0)
	74	return 0;
	75
	76	if (arg_verbose)
	77	printf("settle %s\n", syspath);
	78
1f682e24 YW	79	val = set_remove(settle_set, syspath);
1f682e24 YW	80	if (!val)
fb3d8e9f YW	81	log_debug("Got epoll event on syspath %s not present in syspath set", syspath);
	82
	83	if (set_isempty(settle_set))
	84	return sd_event_exit(sd_device_monitor_get_event(m), 0);
	85
	86	return 0;
	87	}
	88
c7d942d6 YW	89	static char* keyval(const char str, const char key, const char *val) {
	90	char buf, pos;
	91
	92	buf = strdup(str);
	93	if (!buf)
	94	return NULL;
912541b0	95
912541b0	96	pos = strchr(buf, '=');
c7d942d6	97	if (pos) {
912541b0 KS	98	pos[0] = 0;
	99	pos++;
	100	}
c7d942d6 YW	101
c7d942d6 YW	102	*key = buf;
912541b0	103	*val = pos;
c7d942d6	104
912541b0	105	return buf;
80381823 KS	106	}
80381823 KS	107
bb084d42	108	static int help(void) {
5639df9a	109	printf("%s trigger [OPTIONS] DEVPATH\n\n"
5ac0162c LP	110	"Request events from the kernel.\n\n"
5ac0162c LP	111	" -h --help Show this help\n"
5639df9a	112	" -V --version Show package version\n"
5ac0162c LP	113	" -v --verbose Print the list of devices while running\n"
	114	" -n --dry-run Do not actually trigger the events\n"
	115	" -t --type= Type of events to trigger\n"
	116	" devices sysfs devices (default)\n"
	117	" subsystems sysfs subsystems and drivers\n"
	118	" -c --action=ACTION Event action value, default is \"change\"\n"
	119	" -s --subsystem-match=SUBSYSTEM Trigger devices from a matching subsystem\n"
	120	" -S --subsystem-nomatch=SUBSYSTEM Exclude devices from a matching subsystem\n"
	121	" -a --attr-match=FILE[=VALUE] Trigger devices with a matching attribute\n"
	122	" -A --attr-nomatch=FILE[=VALUE] Exclude devices with a matching attribute\n"
	123	" -p --property-match=KEY=VALUE Trigger devices with a matching property\n"
	124	" -g --tag-match=KEY=VALUE Trigger devices with a matching property\n"
	125	" -y --sysname-match=NAME Trigger devices with this /sys path\n"
	126	" --name-match=NAME Trigger devices with this /dev name\n"
	127	" -b --parent-match=NAME Trigger devices with that parent device\n"
792cc203	128	" -w --settle Wait for the triggered events to complete\n"
2001622c YW	129	" --wait-daemon[=SECONDS] Wait for udevd daemon to be initialized\n"
2001622c YW	130	" before triggering uevents\n"
5ac0162c	131	, program_invocation_short_name);
bb084d42 YW	132
bb084d42 YW	133	return 0;
7643ac9a ZJS	134	}
7643ac9a ZJS	135
3d05193e	136	int trigger_main(int argc, char argv[], void userdata) {
80877656 ZJS	137	enum {
80877656 ZJS	138	ARG_NAME = 0x100,
2001622c	139	ARG_PING,
80877656 ZJS	140	};
80877656 ZJS	141
912541b0	142	static const struct option options[] = {
80877656 ZJS	143	{ "verbose", no_argument, NULL, 'v' },
	144	{ "dry-run", no_argument, NULL, 'n' },
	145	{ "type", required_argument, NULL, 't' },
	146	{ "action", required_argument, NULL, 'c' },
	147	{ "subsystem-match", required_argument, NULL, 's' },
	148	{ "subsystem-nomatch", required_argument, NULL, 'S' },
	149	{ "attr-match", required_argument, NULL, 'a' },
	150	{ "attr-nomatch", required_argument, NULL, 'A' },
	151	{ "property-match", required_argument, NULL, 'p' },
	152	{ "tag-match", required_argument, NULL, 'g' },
	153	{ "sysname-match", required_argument, NULL, 'y' },
	154	{ "name-match", required_argument, NULL, ARG_NAME },
	155	{ "parent-match", required_argument, NULL, 'b' },
792cc203	156	{ "settle", no_argument, NULL, 'w' },
2001622c	157	{ "wait-daemon", optional_argument, NULL, ARG_PING },
5639df9a	158	{ "version", no_argument, NULL, 'V' },
80877656	159	{ "help", no_argument, NULL, 'h' },
912541b0 KS	160	{}
	161	};
	162	enum {
	163	TYPE_DEVICES,
	164	TYPE_SUBSYSTEMS,
	165	} device_type = TYPE_DEVICES;
	166	const char *action = "change";
13aca847	167	_cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
f8d596cd	168	_cleanup_(sd_device_monitor_unrefp) sd_device_monitor *m = NULL;
fb3d8e9f	169	_cleanup_(sd_event_unrefp) sd_event *event = NULL;
f8d596cd	170	_cleanup_set_free_free_ Set *settle_set = NULL;
2001622c YW	171	usec_t ping_timeout_usec = 5 * USEC_PER_SEC;
2001622c YW	172	bool settle = false, ping = false;
fb3d8e9f	173	int c, r;
912541b0	174
c494b739 YW	175	if (running_in_chroot() > 0) {
	176	log_info("Running in chroot, ignoring request.");
	177	return 0;
	178	}
	179
13aca847 YW	180	r = sd_device_enumerator_new(&e);
	181	if (r < 0)
	182	return r;
	183
	184	r = sd_device_enumerator_allow_uninitialized(e);
	185	if (r < 0)
	186	return r;
912541b0	187
792cc203	188	while ((c = getopt_long(argc, argv, "vnt:c:s:S:a:A:p:g:y:b:wVh", options, NULL)) >= 0) {
c7d942d6 YW	189	_cleanup_free_ char *buf = NULL;
c7d942d6 YW	190	const char key, val;
912541b0	191
7643ac9a	192	switch (c) {
912541b0	193	case 'v':
13aca847	194	arg_verbose = true;
912541b0 KS	195	break;
912541b0 KS	196	case 'n':
13aca847	197	arg_dry_run = true;
912541b0 KS	198	break;
912541b0 KS	199	case 't':
44433ebd	200	if (streq(optarg, "devices"))
912541b0	201	device_type = TYPE_DEVICES;
44433ebd	202	else if (streq(optarg, "subsystems"))
912541b0	203	device_type = TYPE_SUBSYSTEMS;
47c8fcbe YW	204	else
47c8fcbe YW	205	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown type --type=%s", optarg);
912541b0 KS	206	break;
912541b0 KS	207	case 'c':
dcee4a13 YW	208	if (device_action_from_string(optarg) < 0)
dcee4a13 YW	209	return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown action '%s'", optarg);
44433ebd	210
dcee4a13	211	action = optarg;
912541b0 KS	212	break;
912541b0 KS	213	case 's':
13aca847	214	r = sd_device_enumerator_add_match_subsystem(e, optarg, true);
bb084d42	215	if (r < 0)
c7d942d6	216	return log_error_errno(r, "Failed to add subsystem match '%s': %m", optarg);
912541b0 KS	217	break;
912541b0 KS	218	case 'S':
13aca847	219	r = sd_device_enumerator_add_match_subsystem(e, optarg, false);
bb084d42	220	if (r < 0)
c7d942d6	221	return log_error_errno(r, "Failed to add negative subsystem match '%s': %m", optarg);
912541b0 KS	222	break;
912541b0 KS	223	case 'a':
c7d942d6 YW	224	buf = keyval(optarg, &key, &val);
	225	if (!buf)
	226	return log_oom();
13aca847	227	r = sd_device_enumerator_add_match_sysattr(e, key, val, true);
bb084d42	228	if (r < 0)
c7d942d6	229	return log_error_errno(r, "Failed to add sysattr match '%s=%s': %m", key, val);
912541b0 KS	230	break;
912541b0 KS	231	case 'A':
c7d942d6 YW	232	buf = keyval(optarg, &key, &val);
	233	if (!buf)
	234	return log_oom();
13aca847	235	r = sd_device_enumerator_add_match_sysattr(e, key, val, false);
bb084d42	236	if (r < 0)
c7d942d6	237	return log_error_errno(r, "Failed to add negative sysattr match '%s=%s': %m", key, val);
912541b0 KS	238	break;
912541b0 KS	239	case 'p':
c7d942d6 YW	240	buf = keyval(optarg, &key, &val);
	241	if (!buf)
	242	return log_oom();
13aca847	243	r = sd_device_enumerator_add_match_property(e, key, val);
bb084d42	244	if (r < 0)
c7d942d6	245	return log_error_errno(r, "Failed to add property match '%s=%s': %m", key, val);
912541b0 KS	246	break;
912541b0 KS	247	case 'g':
13aca847	248	r = sd_device_enumerator_add_match_tag(e, optarg);
bb084d42	249	if (r < 0)
c7d942d6	250	return log_error_errno(r, "Failed to add tag match '%s': %m", optarg);
912541b0 KS	251	break;
912541b0 KS	252	case 'y':
13aca847	253	r = sd_device_enumerator_add_match_sysname(e, optarg);
bb084d42	254	if (r < 0)
c7d942d6	255	return log_error_errno(r, "Failed to add sysname match '%s': %m", optarg);
912541b0 KS	256	break;
912541b0 KS	257	case 'b': {
13aca847	258	_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
d6170d27	259
13aca847 YW	260	r = find_device(optarg, "/sys", &dev);
13aca847 YW	261	if (r < 0)
c7d942d6	262	return log_error_errno(r, "Failed to open the device '%s': %m", optarg);
d6170d27	263
5b3b0733	264	r = device_enumerator_add_match_parent_incremental(e, dev);
bb084d42	265	if (r < 0)
c7d942d6	266	return log_error_errno(r, "Failed to add parent match '%s': %m", optarg);
912541b0 KS	267	break;
912541b0 KS	268	}
792cc203 MH	269	case 'w':
	270	settle = true;
	271	break;
d6170d27	272
80877656	273	case ARG_NAME: {
13aca847	274	_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
80877656	275
13aca847 YW	276	r = find_device(optarg, "/dev/", &dev);
13aca847 YW	277	if (r < 0)
c7d942d6	278	return log_error_errno(r, "Failed to open the device '%s': %m", optarg);
80877656	279
5b3b0733	280	r = device_enumerator_add_match_parent_incremental(e, dev);
bb084d42	281	if (r < 0)
c7d942d6	282	return log_error_errno(r, "Failed to add parent match '%s': %m", optarg);
80877656 ZJS	283	break;
	284	}
	285
2001622c YW	286	case ARG_PING: {
	287	ping = true;
	288	if (optarg) {
	289	r = parse_sec(optarg, &ping_timeout_usec);
	290	if (r < 0)
	291	log_error_errno(r, "Failed to parse timeout value '%s', ignoring: %m", optarg);
	292	}
	293	break;
	294	}
	295
5639df9a	296	case 'V':
51b006e1	297	return print_version();
912541b0	298	case 'h':
bb084d42	299	return help();
7643ac9a	300	case '?':
bb084d42	301	return -EINVAL;
7643ac9a ZJS	302	default:
7643ac9a ZJS	303	assert_not_reached("Unknown option");
912541b0 KS	304	}
	305	}
	306
2001622c YW	307	if (ping) {
	308	_cleanup_(udev_ctrl_unrefp) struct udev_ctrl *uctrl = NULL;
	309
100bc5bf YW	310	r = udev_ctrl_new(&uctrl);
	311	if (r < 0)
	312	return log_error_errno(r, "Failed to initialize udev control: %m");
2001622c	313
78467aeb	314	r = udev_ctrl_send_ping(uctrl);
2001622c YW	315	if (r < 0)
2001622c YW	316	return log_error_errno(r, "Failed to connect to udev daemon: %m");
78467aeb YW	317
	318	r = udev_ctrl_wait(uctrl, ping_timeout_usec);
	319	if (r < 0)
	320	return log_error_errno(r, "Failed to wait for daemon to reply: %m");
2001622c YW	321	}
2001622c YW	322
80877656	323	for (; optind < argc; optind++) {
13aca847	324	_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
80877656	325
13aca847 YW	326	r = find_device(argv[optind], NULL, &dev);
13aca847 YW	327	if (r < 0)
c7d942d6	328	return log_error_errno(r, "Failed to open the device '%s': %m", argv[optind]);
80877656	329
5b3b0733	330	r = device_enumerator_add_match_parent_incremental(e, dev);
bb084d42	331	if (r < 0)
c7d942d6	332	return log_error_errno(r, "Failed to add parent match '%s': %m", argv[optind]);
7643ac9a ZJS	333	}
7643ac9a ZJS	334
792cc203	335	if (settle) {
fb3d8e9f YW	336	settle_set = set_new(&string_hash_ops);
	337	if (!settle_set)
	338	return log_oom();
	339
	340	r = sd_event_default(&event);
	341	if (r < 0)
	342	return log_error_errno(r, "Failed to get default event: %m");
792cc203	343
f8d596cd YW	344	r = sd_device_monitor_new(&m);
	345	if (r < 0)
	346	return log_error_errno(r, "Failed to create device monitor object: %m");
bb084d42	347
deb2b734	348	r = sd_device_monitor_attach_event(m, event);
bb084d42	349	if (r < 0)
fb3d8e9f	350	return log_error_errno(r, "Failed to attach event to device monitor: %m");
792cc203	351
deb2b734	352	r = sd_device_monitor_start(m, device_monitor_handler, settle_set);
fb3d8e9f YW	353	if (r < 0)
fb3d8e9f YW	354	return log_error_errno(r, "Failed to start device monitor: %m");
792cc203 MH	355	}
792cc203 MH	356
912541b0 KS	357	switch (device_type) {
912541b0 KS	358	case TYPE_SUBSYSTEMS:
13aca847 YW	359	r = device_enumerator_scan_subsystems(e);
	360	if (r < 0)
	361	return log_error_errno(r, "Failed to scan subsystems: %m");
792cc203	362	break;
912541b0	363	case TYPE_DEVICES:
13aca847 YW	364	r = device_enumerator_scan_devices(e);
	365	if (r < 0)
	366	return log_error_errno(r, "Failed to scan devices: %m");
792cc203	367	break;
912541b0	368	default:
c7d942d6	369	assert_not_reached("Unknown device type");
912541b0	370	}
13aca847	371	r = exec_list(e, action, settle_set);
6bcc09be	372	if (r < 0)
bb084d42	373	return r;
792cc203	374
fb3d8e9f YW	375	if (event && !set_isempty(settle_set)) {
	376	r = sd_event_loop(event);
	377	if (r < 0)
	378	return log_error_errno(r, "Event loop failed: %m");
792cc203 MH	379	}
	380
	381	return 0;
0d5be398	382	}