[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;

        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_debug_errno(r, "Failed to write '%s' to '%s', ignoring: %m", action, filename);
                        continue;
                }

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

        return 0;
}

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