[thirdparty/systemd.git] / udevstart.c

/*
 * udevstart.c
 *
 * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
 * 
 * Quick and dirty way to populate a /dev with udev if your system
 * does not have access to a shell.  Based originally on a patch to udev 
 * from Harald Hoyer <harald@redhat.com>
 *
 *	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 version 2 of the License.
 * 
 *	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.
 * 
 *	You should have received a copy of the GNU General Public License along
 *	with this program; if not, write to the Free Software Foundation, Inc.,
 *	675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/types.h>

#include "libsysfs/sysfs/libsysfs.h"
#include "udev_libc_wrapper.h"
#include "udev_sysfs.h"
#include "udev.h"
#include "udev_version.h"
#include "logging.h"
#include "udev_rules.h"
#include "udev_utils.h"
#include "list.h"

static const char *udev_run_str;
static const char *udev_log_str;
static struct udev_rules rules;

#ifdef USE_LOG
void log_message(int priority, const char *format, ...)
{
	va_list args;

	if (priority > udev_log_priority)
		return;

	va_start(args, format);
	vsyslog(priority, format, args);
	va_end(args);
}
#endif

struct device {
	struct list_head node;
	char path[PATH_SIZE];
	char subsys[NAME_SIZE];
};

/* sort files in lexical order */
static int device_list_insert(const char *path, char *subsystem, struct list_head *device_list)
{
	struct device *loop_device;
	struct device *new_device;

	dbg("insert: '%s'\n", path);

	list_for_each_entry(loop_device, device_list, node) {
		if (strcmp(loop_device->path, path) > 0) {
			break;
		}
	}

	new_device = malloc(sizeof(struct device));
	if (new_device == NULL) {
		dbg("error malloc");
		return -ENOMEM;
	}

	strlcpy(new_device->path, path, sizeof(new_device->path));
	strlcpy(new_device->subsys, subsystem, sizeof(new_device->subsys));
	list_add_tail(&new_device->node, &loop_device->node);
	dbg("add '%s' from subsys '%s'", new_device->path, new_device->subsys);
	return 0;
}

/* list of devices that we should run last due to any one of a number of reasons */
static char *last_list[] = {
	"/block/dm",	/* on here because dm wants to have the block devices around before it */
	NULL,
};

/* list of devices that we should run first due to any one of a number of reasons */
static char *first_list[] = {
	"/class/mem",	/* people tend to like their memory devices around first... */
	NULL,
};

static int add_device(const char *path, const char *subsystem)
{
	struct udevice udev;
	struct sysfs_class_device *class_dev;
	const char *devpath;

	devpath = &path[strlen(sysfs_path)];

	/* clear and set environment for next event */
	clearenv();
	setenv("ACTION", "add", 1);
	setenv("DEVPATH", devpath, 1);
	setenv("SUBSYSTEM", subsystem, 1);
	setenv("UDEV_START", "1", 1);
	if (udev_log_str)
		setenv("UDEV_LOG", udev_log_str, 1);
	if (udev_run_str)
		setenv("UDEV_RUN", udev_run_str, 1);
	dbg("exec: '%s' (%s)\n", devpath, path);

	class_dev = sysfs_open_class_device_path(path);
	if (class_dev == NULL) {
		dbg("sysfs_open_class_device_path failed");
		return -1;
	}

	udev_init_device(&udev, devpath, subsystem, "add");
	udev.devt = get_devt(class_dev);
	if (!udev.devt && udev.type != DEV_NET) {
		dbg("sysfs_open_class_device_path failed");
		return -1;
	}
	udev_rules_get_name(&rules, &udev, class_dev);
	if (udev.ignore_device) {
		dbg("device event will be ignored");
		goto exit;
	}
	if (udev.name[0] == '\0') {
		dbg("device node creation supressed");
		goto run;
	}

	udev_add_device(&udev, class_dev);
	if (udev.devname[0] != '\0')
		setenv("DEVNAME", udev.devname, 1);
run:
	if (udev_run && !list_empty(&udev.run_list)) {
		struct name_entry *name_loop;

		dbg("executing run list");
		list_for_each_entry(name_loop, &udev.run_list, node)
			execute_program(name_loop->name, udev.subsystem, NULL, 0, NULL);
	}
exit:
	sysfs_close_class_device(class_dev);
	udev_cleanup_device(&udev);

	return 0;
}

static void exec_list(struct list_head *device_list)
{
	struct device *loop_device;
	struct device *tmp_device;
	int i;

	/* handle the "first" type devices first */
	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
		for (i = 0; first_list[i] != NULL; i++) {
			if (strncmp(loop_device->path, first_list[i], strlen(first_list[i])) == 0) {
				add_device(loop_device->path, loop_device->subsys);
				list_del(&loop_device->node);
				free(loop_device);
				break;
			}
		}
	}

	/* handle the devices we are allowed to, excluding the "last" type devices */
	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
		int found = 0;
		for (i = 0; last_list[i] != NULL; i++) {
			if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) {
				found = 1;
				break;
			}
		}
		if (found)
			continue;

		add_device(loop_device->path, loop_device->subsys);
		list_del(&loop_device->node);
		free(loop_device);
	}

	/* handle the rest of the devices left over, if any */
	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
		add_device(loop_device->path, loop_device->subsys);
		list_del(&loop_device->node);
		free(loop_device);
	}
}

static int has_devt(const char *directory)
{
	char filename[PATH_SIZE];
	struct stat statbuf;

	snprintf(filename, sizeof(filename), "%s/dev", directory);
	filename[sizeof(filename)-1] = '\0';

	if (stat(filename, &statbuf) == 0)
		return 1;

	return 0;
}

static void udev_scan_block(void)
{
	char base[PATH_SIZE];
	DIR *dir;
	struct dirent *dent;
	LIST_HEAD(device_list);

	snprintf(base, sizeof(base), "%s/block", sysfs_path);
	base[sizeof(base)-1] = '\0';

	dir = opendir(base);
	if (dir != NULL) {
		for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
			char dirname[PATH_SIZE];
			DIR *dir2;
			struct dirent *dent2;

			if (dent->d_name[0] == '.')
				continue;

			snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
			dirname[sizeof(dirname)-1] = '\0';
			if (has_devt(dirname))
				device_list_insert(dirname, "block", &device_list);
			else
				continue;

			/* look for partitions */
			dir2 = opendir(dirname);
			if (dir2 != NULL) {
				for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
					char dirname2[PATH_SIZE];

					if (dent2->d_name[0] == '.')
						continue;

					snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
					dirname2[sizeof(dirname2)-1] = '\0';

					if (has_devt(dirname2))
						device_list_insert(dirname2, "block", &device_list);
				}
				closedir(dir2);
			}
		}
		closedir(dir);
	}
	exec_list(&device_list);
}

static void udev_scan_class(void)
{
	char base[PATH_SIZE];
	DIR *dir;
	struct dirent *dent;
	LIST_HEAD(device_list);

	snprintf(base, sizeof(base), "%s/class", sysfs_path);
	base[sizeof(base)-1] = '\0';

	dir = opendir(base);
	if (dir != NULL) {
		for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
			char dirname[PATH_SIZE];
			DIR *dir2;
			struct dirent *dent2;

			if (dent->d_name[0] == '.')
				continue;

			snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
			dirname[sizeof(dirname)-1] = '\0';

			dir2 = opendir(dirname);
			if (dir2 != NULL) {
				for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
					char dirname2[PATH_SIZE];

					if (dent2->d_name[0] == '.')
						continue;

					snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
					dirname2[sizeof(dirname2)-1] = '\0';

					/* pass the net class as it is */
					if (strcmp(dent->d_name, "net") == 0)
						device_list_insert(dirname2, "net", &device_list);
					else if (has_devt(dirname2))
						device_list_insert(dirname2, dent->d_name, &device_list);
				}
				closedir(dir2);
			}
		}
		closedir(dir);
	}
	exec_list(&device_list);
}

static void asmlinkage sig_handler(int signum)
{
	switch (signum) {
		case SIGALRM:
			exit(1);
		case SIGINT:
		case SIGTERM:
			exit(20 + signum);
	}
}

int main(int argc, char *argv[], char *envp[])
{
	struct sigaction act;

	logging_init("udevstart");
	udev_init_config();
	dbg("version %s", UDEV_VERSION);

	udev_run_str = getenv("UDEV_RUN");
	udev_log_str = getenv("UDEV_LOG");

	/* disable all logging if not explicitely requested */
	if (udev_log_str == NULL)
		udev_log_priority = 0;

	/* set signal handlers */
	memset(&act, 0x00, sizeof(act));
	act.sa_handler = (void (*) (int))sig_handler;
	sigemptyset (&act.sa_mask);
	act.sa_flags = 0;
	sigaction(SIGALRM, &act, NULL);
	sigaction(SIGINT, &act, NULL);
	sigaction(SIGTERM, &act, NULL);

	/* trigger timeout to prevent hanging processes */
	alarm(UDEV_ALARM_TIMEOUT);

	udev_rules_init(&rules, 1);

	udev_scan_block();
	udev_scan_class();

	udev_rules_close(&rules);
	logging_close();
	return 0;
}
Commit	Line	Data
82b9a637 GKH	1	/*
	2	* udevstart.c
	3	*
	4	* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
	5	*
	6	* Quick and dirty way to populate a /dev with udev if your system
	7	* does not have access to a shell. Based originally on a patch to udev
	8	* from Harald Hoyer <harald@redhat.com>
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation version 2 of the License.
	13	*
	14	* This program is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write to the Free Software Foundation, Inc.,
	21	* 675 Mass Ave, Cambridge, MA 02139, USA.
	22	*
	23	*/
	24
	25	#include <stdlib.h>
0e306d08	26	#include <stddef.h>
82b9a637 GKH	27	#include <string.h>
82b9a637 GKH	28	#include <stdio.h>
56a8a624	29	#include <unistd.h>
82b9a637 GKH	30	#include <errno.h>
82b9a637 GKH	31	#include <ctype.h>
82b9a637	32	#include <dirent.h>
56a8a624	33	#include <signal.h>
82b9a637	34	#include <sys/wait.h>
f22e9686	35	#include <sys/stat.h>
f27125f9	36	#include <sys/types.h>
82b9a637	37
7a947ce5	38	#include "libsysfs/sysfs/libsysfs.h"
63f61c5c	39	#include "udev_libc_wrapper.h"
c07669bd	40	#include "udev_sysfs.h"
63f61c5c	41	#include "udev.h"
6b493a20	42	#include "udev_version.h"
82b9a637	43	#include "logging.h"
e5e322bc	44	#include "udev_rules.h"
9af5bb2f	45	#include "udev_utils.h"
0e306d08	46	#include "list.h"
82b9a637	47
b8476286 KS	48	static const char *udev_run_str;
b8476286 KS	49	static const char *udev_log_str;
8bd41f36	50	static struct udev_rules rules;
b8476286	51
56a8a624	52	#ifdef USE_LOG
6b493a20	53	void log_message(int priority, const char *format, ...)
56a8a624	54	{
6b493a20 KS	55	va_list args;
	56
	57	if (priority > udev_log_priority)
	58	return;
	59
	60	va_start(args, format);
	61	vsyslog(priority, format, args);
	62	va_end(args);
56a8a624 KS	63	}
56a8a624 KS	64	#endif
82b9a637	65
0e306d08	66	struct device {
47241986	67	struct list_head node;
63f61c5c KS	68	char path[PATH_SIZE];
63f61c5c KS	69	char subsys[NAME_SIZE];
0e306d08 GKH	70	};
	71
	72	/* sort files in lexical order */
f22e9686	73	static int device_list_insert(const char path, char subsystem, struct list_head *device_list)
0e306d08 GKH	74	{
	75	struct device *loop_device;
	76	struct device *new_device;
	77
f22e9686 KS	78	dbg("insert: '%s'\n", path);
f22e9686 KS	79
47241986	80	list_for_each_entry(loop_device, device_list, node) {
0e306d08 GKH	81	if (strcmp(loop_device->path, path) > 0) {
	82	break;
	83	}
	84	}
	85
	86	new_device = malloc(sizeof(struct device));
	87	if (new_device == NULL) {
	88	dbg("error malloc");
	89	return -ENOMEM;
	90	}
	91
63f61c5c KS	92	strlcpy(new_device->path, path, sizeof(new_device->path));
63f61c5c KS	93	strlcpy(new_device->subsys, subsystem, sizeof(new_device->subsys));
47241986	94	list_add_tail(&new_device->node, &loop_device->node);
aee380b6	95	dbg("add '%s' from subsys '%s'", new_device->path, new_device->subsys);
0e306d08 GKH	96	return 0;
	97	}
	98
0e306d08 GKH	99	/* list of devices that we should run last due to any one of a number of reasons */
	100	static char *last_list[] = {
	101	"/block/dm", /* on here because dm wants to have the block devices around before it */
	102	NULL,
	103	};
	104
70f630f6 GKH	105	/* list of devices that we should run first due to any one of a number of reasons */
	106	static char *first_list[] = {
	107	"/class/mem", /* people tend to like their memory devices around first... */
	108	NULL,
	109	};
	110
f22e9686	111	static int add_device(const char path, const char subsystem)
f608f8ac	112	{
7a947ce5	113	struct udevice udev;
7a947ce5	114	struct sysfs_class_device *class_dev;
f22e9686 KS	115	const char *devpath;
	116
	117	devpath = &path[strlen(sysfs_path)];
b8476286 KS	118
	119	/* clear and set environment for next event */
	120	clearenv();
	121	setenv("ACTION", "add", 1);
7a947ce5	122	setenv("DEVPATH", devpath, 1);
af4b05d4	123	setenv("SUBSYSTEM", subsystem, 1);
b8476286 KS	124	setenv("UDEV_START", "1", 1);
	125	if (udev_log_str)
	126	setenv("UDEV_LOG", udev_log_str, 1);
	127	if (udev_run_str)
	128	setenv("UDEV_RUN", udev_run_str, 1);
56a8a624	129	dbg("exec: '%s' (%s)\n", devpath, path);
f22e9686	130
7a947ce5 KS	131	class_dev = sysfs_open_class_device_path(path);
7a947ce5 KS	132	if (class_dev == NULL) {
561d4c5a	133	dbg("sysfs_open_class_device_path failed");
c07669bd	134	return -1;
7a947ce5 KS	135	}
7a947ce5 KS	136
fb39f056	137	udev_init_device(&udev, devpath, subsystem, "add");
c07669bd	138	udev.devt = get_devt(class_dev);
66f74a2d	139	if (!udev.devt && udev.type != DEV_NET) {
561d4c5a	140	dbg("sysfs_open_class_device_path failed");
c07669bd KS	141	return -1;
c07669bd KS	142	}
8bd41f36	143	udev_rules_get_name(&rules, &udev, class_dev);
c07669bd	144	if (udev.ignore_device) {
561d4c5a	145	dbg("device event will be ignored");
c07669bd KS	146	goto exit;
	147	}
	148	if (udev.name[0] == '\0') {
561d4c5a	149	dbg("device node creation supressed");
c07669bd KS	150	goto run;
c07669bd KS	151	}
7a947ce5	152
c07669bd	153	udev_add_device(&udev, class_dev);
81af4e05 KS	154	if (udev.devname[0] != '\0')
81af4e05 KS	155	setenv("DEVNAME", udev.devname, 1);
c07669bd	156	run:
821d0ec8 KS	157	if (udev_run && !list_empty(&udev.run_list)) {
	158	struct name_entry *name_loop;
	159
	160	dbg("executing run list");
	161	list_for_each_entry(name_loop, &udev.run_list, node)
be4bedd1	162	execute_program(name_loop->name, udev.subsystem, NULL, 0, NULL);
821d0ec8	163	}
c07669bd	164	exit:
5d24c6ca	165	sysfs_close_class_device(class_dev);
56a8a624	166	udev_cleanup_device(&udev);
5d24c6ca KS	167
5d24c6ca KS	168	return 0;
f608f8ac KS	169	}
f608f8ac KS	170
0e306d08 GKH	171	static void exec_list(struct list_head *device_list)
	172	{
	173	struct device *loop_device;
	174	struct device *tmp_device;
70f630f6 GKH	175	int i;
	176
	177	/* handle the "first" type devices first */
47241986	178	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
f22e9686	179	for (i = 0; first_list[i] != NULL; i++) {
70f630f6	180	if (strncmp(loop_device->path, first_list[i], strlen(first_list[i])) == 0) {
7a947ce5	181	add_device(loop_device->path, loop_device->subsys);
47241986	182	list_del(&loop_device->node);
70f630f6 GKH	183	free(loop_device);
	184	break;
	185	}
	186	}
	187	}
0e306d08 GKH	188
0e306d08 GKH	189	/* handle the devices we are allowed to, excluding the "last" type devices */
47241986	190	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
0e306d08	191	int found = 0;
f22e9686	192	for (i = 0; last_list[i] != NULL; i++) {
0e306d08 GKH	193	if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) {
	194	found = 1;
	195	break;
	196	}
	197	}
	198	if (found)
	199	continue;
	200
7a947ce5	201	add_device(loop_device->path, loop_device->subsys);
47241986	202	list_del(&loop_device->node);
0e306d08 GKH	203	free(loop_device);
	204	}
	205
	206	/* handle the rest of the devices left over, if any */
47241986	207	list_for_each_entry_safe(loop_device, tmp_device, device_list, node) {
7a947ce5	208	add_device(loop_device->path, loop_device->subsys);
47241986	209	list_del(&loop_device->node);
0e306d08 GKH	210	free(loop_device);
	211	}
	212	}
	213
f22e9686 KS	214	static int has_devt(const char *directory)
f22e9686 KS	215	{
63f61c5c	216	char filename[PATH_SIZE];
f22e9686 KS	217	struct stat statbuf;
f22e9686 KS	218
63f61c5c KS	219	snprintf(filename, sizeof(filename), "%s/dev", directory);
63f61c5c KS	220	filename[sizeof(filename)-1] = '\0';
f22e9686 KS	221
	222	if (stat(filename, &statbuf) == 0)
	223	return 1;
	224
	225	return 0;
	226	}
	227
0e306d08	228	static void udev_scan_block(void)
82b9a637	229	{
63f61c5c	230	char base[PATH_SIZE];
e4dc0e11 KS	231	DIR *dir;
e4dc0e11 KS	232	struct dirent *dent;
0e306d08	233	LIST_HEAD(device_list);
82b9a637	234
63f61c5c KS	235	snprintf(base, sizeof(base), "%s/block", sysfs_path);
63f61c5c KS	236	base[sizeof(base)-1] = '\0';
f22e9686 KS	237
f22e9686 KS	238	dir = opendir(base);
e4dc0e11 KS	239	if (dir != NULL) {
e4dc0e11 KS	240	for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
63f61c5c	241	char dirname[PATH_SIZE];
e4dc0e11 KS	242	DIR *dir2;
	243	struct dirent *dent2;
	244
f22e9686	245	if (dent->d_name[0] == '.')
82b9a637 GKH	246	continue;
82b9a637 GKH	247
63f61c5c KS	248	snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
63f61c5c KS	249	dirname[sizeof(dirname)-1] = '\0';
f22e9686 KS	250	if (has_devt(dirname))
	251	device_list_insert(dirname, "block", &device_list);
	252	else
	253	continue;
0e306d08	254
56a8a624	255	/* look for partitions */
82b9a637	256	dir2 = opendir(dirname);
e4dc0e11 KS	257	if (dir2 != NULL) {
e4dc0e11 KS	258	for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
63f61c5c	259	char dirname2[PATH_SIZE];
82b9a637	260
f22e9686	261	if (dent2->d_name[0] == '.')
82b9a637 GKH	262	continue;
82b9a637 GKH	263
63f61c5c KS	264	snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
63f61c5c KS	265	dirname2[sizeof(dirname2)-1] = '\0';
f22e9686 KS	266
	267	if (has_devt(dirname2))
	268	device_list_insert(dirname2, "block", &device_list);
82b9a637	269	}
e13fa599	270	closedir(dir2);
82b9a637 GKH	271	}
82b9a637 GKH	272	}
e13fa599	273	closedir(dir);
82b9a637	274	}
0e306d08 GKH	275	exec_list(&device_list);
	276	}
	277
	278	static void udev_scan_class(void)
	279	{
63f61c5c	280	char base[PATH_SIZE];
0e306d08 GKH	281	DIR *dir;
	282	struct dirent *dent;
	283	LIST_HEAD(device_list);
	284
63f61c5c KS	285	snprintf(base, sizeof(base), "%s/class", sysfs_path);
63f61c5c KS	286	base[sizeof(base)-1] = '\0';
f22e9686 KS	287
f22e9686 KS	288	dir = opendir(base);
e4dc0e11 KS	289	if (dir != NULL) {
e4dc0e11 KS	290	for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
63f61c5c	291	char dirname[PATH_SIZE];
e4dc0e11 KS	292	DIR *dir2;
	293	struct dirent *dent2;
	294
f22e9686	295	if (dent->d_name[0] == '.')
82b9a637 GKH	296	continue;
82b9a637 GKH	297
63f61c5c KS	298	snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name);
63f61c5c KS	299	dirname[sizeof(dirname)-1] = '\0';
56a8a624	300
82b9a637	301	dir2 = opendir(dirname);
e4dc0e11 KS	302	if (dir2 != NULL) {
e4dc0e11 KS	303	for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) {
63f61c5c	304	char dirname2[PATH_SIZE];
82b9a637	305
f22e9686	306	if (dent2->d_name[0] == '.')
82b9a637 GKH	307	continue;
82b9a637 GKH	308
63f61c5c KS	309	snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name);
63f61c5c KS	310	dirname2[sizeof(dirname2)-1] = '\0';
f22e9686	311
aee380b6	312	/* pass the net class as it is */
f22e9686	313	if (strcmp(dent->d_name, "net") == 0)
aee380b6	314	device_list_insert(dirname2, "net", &device_list);
f22e9686 KS	315	else if (has_devt(dirname2))
f22e9686 KS	316	device_list_insert(dirname2, dent->d_name, &device_list);
82b9a637	317	}
e13fa599	318	closedir(dir2);
82b9a637 GKH	319	}
82b9a637 GKH	320	}
e13fa599	321	closedir(dir);
82b9a637	322	}
0e306d08	323	exec_list(&device_list);
82b9a637 GKH	324	}
82b9a637 GKH	325
56a8a624	326	static void asmlinkage sig_handler(int signum)
82b9a637	327	{
56a8a624 KS	328	switch (signum) {
	329	case SIGALRM:
	330	exit(1);
	331	case SIGINT:
	332	case SIGTERM:
	333	exit(20 + signum);
	334	}
	335	}
	336
	337	int main(int argc, char argv[], char envp[])
	338	{
	339	struct sigaction act;
	340
66f74a2d	341	logging_init("udevstart");
56a8a624	342	udev_init_config();
b8476286 KS	343	dbg("version %s", UDEV_VERSION);
	344
	345	udev_run_str = getenv("UDEV_RUN");
	346	udev_log_str = getenv("UDEV_LOG");
	347
6b493a20	348	/* disable all logging if not explicitely requested */
b8476286	349	if (udev_log_str == NULL)
6b493a20	350	udev_log_priority = 0;
56a8a624 KS	351
	352	/* set signal handlers */
	353	memset(&act, 0x00, sizeof(act));
	354	act.sa_handler = (void (*) (int))sig_handler;
	355	sigemptyset (&act.sa_mask);
	356	act.sa_flags = 0;
	357	sigaction(SIGALRM, &act, NULL);
	358	sigaction(SIGINT, &act, NULL);
	359	sigaction(SIGTERM, &act, NULL);
	360
	361	/* trigger timeout to prevent hanging processes */
8815afa1	362	alarm(UDEV_ALARM_TIMEOUT);
56a8a624	363
8bd41f36	364	udev_rules_init(&rules, 1);
56a8a624	365
0e306d08	366	udev_scan_block();
56a8a624	367	udev_scan_class();
af4b05d4	368
8bd41f36	369	udev_rules_close(&rules);
6b493a20	370	logging_close();
3f20eac0	371	return 0;
82b9a637	372	}