[thirdparty/systemd.git] / udev-add.c

/*
 * udev-add.c
 *
 * Userspace devfs
 *
 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.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 <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <grp.h>
#ifndef __KLIBC__
#include <pwd.h>
#endif

#include "udev.h"
#include "udev_version.h"
#include "udev_dbus.h"
#include "logging.h"
#include "namedev.h"
#include "udevdb.h"
#include "libsysfs/libsysfs.h"
#include "klibc_fixups.h"

/* 
 * Right now the major/minor of a device is stored in a file called
 * "dev" in sysfs.
 * The number is stored as:
 * 	MM:mm
 * 		MM is the major
 * 		mm is the minor
 * 		The value is in decimal.
 */
static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
{
	int retval = -ENODEV;
	struct sysfs_attribute *attr = NULL;

	attr = sysfs_get_classdev_attr(class_dev, "dev");
	if (attr == NULL)
		goto exit;
	dbg("dev='%s'", attr->value);

	if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
		goto exit;
	dbg("found major=%d, minor=%d", udev->major, udev->minor);

	retval = 0;
exit:
	return retval;
}

static int create_path(char *file)
{
	char p[NAME_SIZE];
	char *pos;
	int retval;
	struct stat stats;
	
	strncpy(p, file, sizeof(p));
	pos = strchr(p+1, '/');
	while (1) {
		pos = strchr(pos+1, '/');
		if (pos == NULL)
			break;
		*pos = 0x00;
		if (stat(p, &stats)) {
			retval = mkdir(p, 0755);
			if (retval != 0) {
				dbg("mkdir(%s) failed with error '%s'",
				    p, strerror(errno));
				return retval;
			}
			dbg("created '%s'", p);
		}
		*pos = '/';
	}
	return 0;
}

static int make_node(char *filename, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
{
	int retval;

	retval = mknod(filename, mode, makedev(major, minor));
	if (retval != 0) {
		dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
		    filename, mode, major, minor, strerror(errno));
		return retval;
	}

	dbg("chmod(%s, %#o)", filename, mode);
	retval = chmod(filename, mode);
	if (retval != 0) {
		dbg("chmod(%s, %#o) failed with error '%s'",
		    filename, mode, strerror(errno));
		return retval;
	}

	if (uid != 0 || gid != 0) {
		dbg("chown(%s, %u, %u)", filename, uid, gid);
		retval = chown(filename, uid, gid);
		if (retval != 0) {
			dbg("chown(%s, %u, %u) failed with error '%s'",
			    filename, uid, gid, strerror(errno));
			return retval;
		}
	}

	return 0;
}

static int create_node(struct udevice *dev, int fake)
{
	struct stat stats;
	char filename[255];
	char linktarget[255];
	char partitionname[255];
	char *linkname;
	char *symlinks;
	int retval = 0;
	uid_t uid = 0;
	gid_t gid = 0;
	int i;
	int tail;

	strncpy(filename, udev_root, sizeof(filename));
	strncat(filename, dev->name, sizeof(filename));

	switch (dev->type) {
	case 'b':
		dev->mode |= S_IFBLK;
		break;
	case 'c':
	case 'u':
		dev->mode |= S_IFCHR;
		break;
	case 'p':
		dev->mode |= S_IFIFO;
		break;
	default:
		dbg("unknown node type %c\n", dev->type);
		return -EINVAL;
	}

	/* create parent directories if needed */
	if (strrchr(dev->name, '/'))
		create_path(filename);

	if (dev->owner[0] != '\0') {
		char *endptr;
		unsigned long id = strtoul(dev->owner, &endptr, 10);
		if (endptr[0] == '\0')
			uid = (uid_t) id;
		else {
			struct passwd *pw = getpwnam(dev->owner);
			if (pw == NULL)
				dbg("specified user unknown '%s'", dev->owner);
			else
				uid = pw->pw_uid;
		}
	}

	if (dev->group[0] != '\0') {
		char *endptr;
		unsigned long id = strtoul(dev->group, &endptr, 10);
		if (endptr[0] == '\0')
			gid = (gid_t) id;
		else {
			struct group *gr = getgrnam(dev->group);
			if (gr == NULL)
				dbg("specified group unknown '%s'", dev->group);
			else
				gid = gr->gr_gid;
		}
	}

	if (!fake) {
		info("creating device node '%s'", filename);
		make_node(filename, dev->major, dev->minor, dev->mode, uid, gid);
	} else {
		info("creating device node '%s', major = '%d', minor = '%d', "
		     "mode = '%#o', uid = '%d', gid = '%d'", filename,
		     dev->major, dev->minor, (mode_t)dev->mode, uid, gid);
	}

	/* create partitions if requested */
	if (dev->partitions > 0) {
		info("creating device partition nodes '%s[1-%i]'", filename, dev->partitions);
		if (!fake) {
			for (i = 1; i <= dev->partitions; i++) {
				sprintf(partitionname, "%s%i", filename, i);
				make_node(partitionname, dev->major,
					  dev->minor + i, dev->mode, uid, gid);
			}
		}
	}

	/* create symlink if requested */
	if (dev->symlink[0] != '\0') {
		symlinks = dev->symlink;
		while (1) {
			linkname = strsep(&symlinks, " ");
			if (linkname == NULL || linkname[0] == '\0')
				break;

			strncpy(filename, udev_root, sizeof(filename));
			strncat(filename, linkname, sizeof(filename));
			dbg("symlink '%s' to node '%s' requested", filename, dev->name);
			if (!fake)
				if (strrchr(linkname, '/'))
					create_path(filename);

			/* optimize relative link */
			linktarget[0] = '\0';
			i = 0;
			tail = 0;
			while ((dev->name[i] == linkname[i]) && dev->name[i]) {
				if (dev->name[i] == '/')
					tail = i+1;
				i++;
			}
			while (linkname[i] != '\0') {
				if (linkname[i] == '/')
					strcat(linktarget, "../");
				i++;
			}

			if (linktarget[0] == '\0')
				strcpy(linktarget, "./");
			strcat(linktarget, &dev->name[tail]);

			/* unlink existing files to ensure that our symlink is created */
			if (!fake && (lstat(filename, &stats) == 0)) {
				if ((stats.st_mode & S_IFMT) != S_IFDIR) {
					if (unlink(filename))
						dbg("unlink(%s) failed with error '%s'",
						    filename, strerror(errno));
				}
			}

			dbg("symlink(%s, %s)", linktarget, filename);
			if (!fake) {
				retval = symlink(linktarget, filename);
				if (retval != 0)
					dbg("symlink(%s, %s) failed with error '%s'",
					    linktarget, filename, strerror(errno));
			}
		}
	}

	return retval;
}

static struct sysfs_class_device *get_class_dev(char *device_name)
{
	char dev_path[SYSFS_PATH_MAX];
	struct sysfs_class_device *class_dev = NULL;

	strcpy(dev_path, sysfs_path);
	strcat(dev_path, device_name);
	dbg("looking at '%s'", dev_path);

	/* open up the sysfs class device for this thing... */
	class_dev = sysfs_open_class_device_path(dev_path);
	if (class_dev == NULL) {
		dbg ("sysfs_open_class_device_path failed");
		goto exit;
	}
	dbg("class_dev->name='%s'", class_dev->name);

exit:
	return class_dev;
}

/* wait for the "dev" file to show up in the directory in sysfs.
 * If it doesn't happen in about 10 seconds, give up.
 */
#define SECONDS_TO_WAIT_FOR_DEV		10
static int sleep_for_dev(char *path)
{
	char filename[SYSFS_PATH_MAX + 6];
	int loop = SECONDS_TO_WAIT_FOR_DEV;
	int retval;

	strcpy(filename, sysfs_path);
	strcat(filename, path);
	strcat(filename, "/dev");

	while (loop--) {
		struct stat buf;

		dbg("looking for '%s'", filename);
		retval = stat(filename, &buf);
		if (retval == 0)
			goto exit;

		/* sleep to give the kernel a chance to create the dev file */
		sleep(1);
	}
	retval = -ENODEV;
exit:
	return retval;
}

int udev_add_device(char *path, char *subsystem, int fake)
{
	struct sysfs_class_device *class_dev = NULL;
	struct udevice dev;
	int retval = -EINVAL;

	memset(&dev, 0x00, sizeof(dev));

	/* for now, the block layer is the only place where block devices are */
	if (strcmp(subsystem, "block") == 0)
		dev.type = 'b';
	else
		dev.type = 'c';

	retval = sleep_for_dev(path);
	if (retval != 0)
		goto exit;

	class_dev = get_class_dev(path);
	if (class_dev == NULL)
		goto exit;

	retval = get_major_minor(class_dev, &dev);
	if (retval != 0) {
		dbg("get_major_minor failed");
		goto exit;
	}

	retval = namedev_name_device(class_dev, &dev);
	if (retval != 0)
		goto exit;

	if (!fake) {
		retval = udevdb_add_dev(path, &dev);
		if (retval != 0)
			dbg("udevdb_add_dev failed, but we are going to try "
			    "to create the node anyway. But remove might not "
			    "work properly for this device.");

	}
	dbg("name='%s'", dev.name);
	retval = create_node(&dev, fake);

	if ((retval == 0) && (!fake))
		sysbus_send_create(&dev, path);

exit:
	if (class_dev)
		sysfs_close_class_device(class_dev);

	return retval;
}
Commit	Line	Data
ea733a2f GKH	1	/*
	2	* udev-add.c
	3	*
	4	* Userspace devfs
	5	*
	6	* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation version 2 of the License.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 675 Mass Ave, Cambridge, MA 02139, USA.
	21	*
	22	*/
	23
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <stdio.h>
	27	#include <fcntl.h>
	28	#include <unistd.h>
	29	#include <errno.h>
32ff5bca	30	#include <sys/stat.h>
10950dfe GKH	31	#include <sys/types.h>
	32	#include <grp.h>
	33	#ifndef __KLIBC__
	34	#include <pwd.h>
	35	#endif
ea733a2f GKH	36
	37	#include "udev.h"
	38	#include "udev_version.h"
7ac0feeb	39	#include "udev_dbus.h"
54988802	40	#include "logging.h"
ea733a2f	41	#include "namedev.h"
8e41d35d	42	#include "udevdb.h"
ea733a2f	43	#include "libsysfs/libsysfs.h"
10950dfe	44	#include "klibc_fixups.h"
ea733a2f	45
ea733a2f GKH	46	/*
	47	* Right now the major/minor of a device is stored in a file called
	48	* "dev" in sysfs.
	49	* The number is stored as:
727d1ba5	50	* MM:mm
ea733a2f GKH	51	* MM is the major
ea733a2f GKH	52	* mm is the minor
727d1ba5	53	* The value is in decimal.
ea733a2f	54	*/
30defadd	55	static int get_major_minor(struct sysfs_class_device class_dev, struct udevice udev)
ea733a2f	56	{
ea256f90	57	int retval = -ENODEV;
5d4754f1	58	struct sysfs_attribute *attr = NULL;
ea733a2f	59
5d4754f1 DS	60	attr = sysfs_get_classdev_attr(class_dev, "dev");
5d4754f1 DS	61	if (attr == NULL)
ea256f90	62	goto exit;
5d4754f1	63	dbg("dev='%s'", attr->value);
ea733a2f	64
5d4754f1	65	if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
ea256f90	66	goto exit;
f7b4eca4	67	dbg("found major=%d, minor=%d", udev->major, udev->minor);
ea733a2f GKH	68
ea733a2f GKH	69	retval = 0;
ea256f90	70	exit:
ea733a2f GKH	71	return retval;
	72	}
	73
3d150dfb KS	74	static int create_path(char *file)
	75	{
	76	char p[NAME_SIZE];
	77	char *pos;
	78	int retval;
	79	struct stat stats;
	80
	81	strncpy(p, file, sizeof(p));
	82	pos = strchr(p+1, '/');
	83	while (1) {
	84	pos = strchr(pos+1, '/');
	85	if (pos == NULL)
	86	break;
	87	*pos = 0x00;
	88	if (stat(p, &stats)) {
	89	retval = mkdir(p, 0755);
c5118442	90	if (retval != 0) {
3d150dfb KS	91	dbg("mkdir(%s) failed with error '%s'",
	92	p, strerror(errno));
	93	return retval;
	94	}
	95	dbg("created '%s'", p);
	96	}
	97	*pos = '/';
	98	}
	99	return 0;
	100	}
	101
50e5de03 KS	102	static int make_node(char *filename, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
	103	{
	104	int retval;
	105
	106	retval = mknod(filename, mode, makedev(major, minor));
	107	if (retval != 0) {
	108	dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
	109	filename, mode, major, minor, strerror(errno));
	110	return retval;
	111	}
	112
	113	dbg("chmod(%s, %#o)", filename, mode);
	114	retval = chmod(filename, mode);
	115	if (retval != 0) {
	116	dbg("chmod(%s, %#o) failed with error '%s'",
	117	filename, mode, strerror(errno));
	118	return retval;
	119	}
	120
	121	if (uid != 0 \|\| gid != 0) {
	122	dbg("chown(%s, %u, %u)", filename, uid, gid);
	123	retval = chown(filename, uid, gid);
	124	if (retval != 0) {
	125	dbg("chown(%s, %u, %u) failed with error '%s'",
	126	filename, uid, gid, strerror(errno));
	127	return retval;
	128	}
	129	}
	130
	131	return 0;
	132	}
	133
eb10f97f	134	static int create_node(struct udevice *dev, int fake)
ea733a2f	135	{
3f09184b	136	struct stat stats;
ea733a2f	137	char filename[255];
3d150dfb	138	char linktarget[255];
50e5de03	139	char partitionname[255];
4763256c KS	140	char *linkname;
4763256c KS	141	char *symlinks;
ea733a2f	142	int retval = 0;
e308ebb7 GKH	143	uid_t uid = 0;
e308ebb7 GKH	144	gid_t gid = 0;
3d150dfb KS	145	int i;
	146	int tail;
	147
c056c514	148	strncpy(filename, udev_root, sizeof(filename));
5840bc63 GKH	149	strncat(filename, dev->name, sizeof(filename));
	150
	151	switch (dev->type) {
1331c889	152	case 'b':
5840bc63	153	dev->mode \|= S_IFBLK;
1331c889 GKH	154	break;
	155	case 'c':
	156	case 'u':
5840bc63	157	dev->mode \|= S_IFCHR;
1331c889 GKH	158	break;
1331c889 GKH	159	case 'p':
5840bc63	160	dev->mode \|= S_IFIFO;
1331c889 GKH	161	break;
1331c889 GKH	162	default:
5840bc63	163	dbg("unknown node type %c\n", dev->type);
1331c889 GKH	164	return -EINVAL;
1331c889 GKH	165	}
0abf54fc	166
3d150dfb KS	167	/* create parent directories if needed */
	168	if (strrchr(dev->name, '/'))
	169	create_path(filename);
218eae87	170
c5118442	171	if (dev->owner[0] != '\0') {
c19a6b30 KS	172	char *endptr;
c19a6b30 KS	173	unsigned long id = strtoul(dev->owner, &endptr, 10);
765cbd97	174	if (endptr[0] == '\0')
c19a6b30	175	uid = (uid_t) id;
10950dfe GKH	176	else {
10950dfe GKH	177	struct passwd *pw = getpwnam(dev->owner);
765cbd97 KS	178	if (pw == NULL)
765cbd97 KS	179	dbg("specified user unknown '%s'", dev->owner);
10950dfe GKH	180	else
	181	uid = pw->pw_uid;
	182	}
c19a6b30 KS	183	}
c19a6b30 KS	184
c5118442	185	if (dev->group[0] != '\0') {
c19a6b30 KS	186	char *endptr;
c19a6b30 KS	187	unsigned long id = strtoul(dev->group, &endptr, 10);
765cbd97	188	if (endptr[0] == '\0')
c19a6b30	189	gid = (gid_t) id;
10950dfe GKH	190	else {
10950dfe GKH	191	struct group *gr = getgrnam(dev->group);
765cbd97 KS	192	if (gr == NULL)
765cbd97 KS	193	dbg("specified group unknown '%s'", dev->group);
10950dfe GKH	194	else
	195	gid = gr->gr_gid;
	196	}
c19a6b30 KS	197	}
c19a6b30 KS	198
ab2e5bd9	199	if (!fake) {
50e5de03 KS	200	info("creating device node '%s'", filename);
50e5de03 KS	201	make_node(filename, dev->major, dev->minor, dev->mode, uid, gid);
ab2e5bd9 GKH	202	} else {
	203	info("creating device node '%s', major = '%d', minor = '%d', "
	204	"mode = '%#o', uid = '%d', gid = '%d'", filename,
	205	dev->major, dev->minor, (mode_t)dev->mode, uid, gid);
	206	}
50e5de03 KS	207
	208	/* create partitions if requested */
	209	if (dev->partitions > 0) {
	210	info("creating device partition nodes '%s[1-%i]'", filename, dev->partitions);
ab2e5bd9 GKH	211	if (!fake) {
	212	for (i = 1; i <= dev->partitions; i++) {
	213	sprintf(partitionname, "%s%i", filename, i);
	214	make_node(partitionname, dev->major,
	215	dev->minor + i, dev->mode, uid, gid);
	216	}
50e5de03	217	}
3d150dfb KS	218	}
3d150dfb KS	219
3d150dfb	220	/* create symlink if requested */
c5118442	221	if (dev->symlink[0] != '\0') {
4763256c KS	222	symlinks = dev->symlink;
	223	while (1) {
	224	linkname = strsep(&symlinks, " ");
0529e2ed	225	if (linkname == NULL \|\| linkname[0] == '\0')
4763256c KS	226	break;
	227
	228	strncpy(filename, udev_root, sizeof(filename));
	229	strncat(filename, linkname, sizeof(filename));
	230	dbg("symlink '%s' to node '%s' requested", filename, dev->name);
eb10f97f GKH	231	if (!fake)
	232	if (strrchr(linkname, '/'))
	233	create_path(filename);
4763256c KS	234
	235	/* optimize relative link */
	236	linktarget[0] = '\0';
	237	i = 0;
	238	tail = 0;
	239	while ((dev->name[i] == linkname[i]) && dev->name[i]) {
	240	if (dev->name[i] == '/')
	241	tail = i+1;
	242	i++;
	243	}
c5118442	244	while (linkname[i] != '\0') {
4763256c KS	245	if (linkname[i] == '/')
	246	strcat(linktarget, "../");
	247	i++;
	248	}
3d150dfb	249
c5118442	250	if (linktarget[0] == '\0')
4763256c KS	251	strcpy(linktarget, "./");
4763256c KS	252	strcat(linktarget, &dev->name[tail]);
3d150dfb	253
50e5de03	254	/* unlink existing files to ensure that our symlink is created */
eb10f97f	255	if (!fake && (lstat(filename, &stats) == 0)) {
3f09184b	256	if ((stats.st_mode & S_IFMT) != S_IFDIR) {
	257	if (unlink(filename))
	258	dbg("unlink(%s) failed with error '%s'",
	259	filename, strerror(errno));
	260	}
	261	}
	262
4763256c	263	dbg("symlink(%s, %s)", linktarget, filename);
eb10f97f GKH	264	if (!fake) {
	265	retval = symlink(linktarget, filename);
	266	if (retval != 0)
	267	dbg("symlink(%s, %s) failed with error '%s'",
	268	linktarget, filename, strerror(errno));
	269	}
4763256c	270	}
c19a6b30 KS	271	}
c19a6b30 KS	272
ea733a2f GKH	273	return retval;
	274	}
	275
d7e954a4	276	static struct sysfs_class_device get_class_dev(char device_name)
ea733a2f GKH	277	{
ea733a2f GKH	278	char dev_path[SYSFS_PATH_MAX];
63dde9f8 GKH	279	struct sysfs_class_device *class_dev = NULL;
63dde9f8 GKH	280
ea733a2f GKH	281	strcpy(dev_path, sysfs_path);
ea733a2f GKH	282	strcat(dev_path, device_name);
f7b4eca4	283	dbg("looking at '%s'", dev_path);
ea733a2f GKH	284
ea733a2f GKH	285	/* open up the sysfs class device for this thing... */
bcbe2d8e	286	class_dev = sysfs_open_class_device_path(dev_path);
ea733a2f	287	if (class_dev == NULL) {
bcbe2d8e	288	dbg ("sysfs_open_class_device_path failed");
63dde9f8	289	goto exit;
ea733a2f	290	}
f7b4eca4	291	dbg("class_dev->name='%s'", class_dev->name);
ea733a2f	292
63dde9f8	293	exit:
ea733a2f GKH	294	return class_dev;
	295	}
	296
29fd7e67 GKH	297	/* wait for the "dev" file to show up in the directory in sysfs.
	298	* If it doesn't happen in about 10 seconds, give up.
	299	*/
	300	#define SECONDS_TO_WAIT_FOR_DEV 10
6089318c	301	static int sleep_for_dev(char *path)
29fd7e67 GKH	302	{
29fd7e67 GKH	303	char filename[SYSFS_PATH_MAX + 6];
c332cfc7 RL	304	int loop = SECONDS_TO_WAIT_FOR_DEV;
c332cfc7 RL	305	int retval;
29fd7e67 GKH	306
29fd7e67 GKH	307	strcpy(filename, sysfs_path);
5840bc63	308	strcat(filename, path);
29fd7e67 GKH	309	strcat(filename, "/dev");
29fd7e67 GKH	310
c332cfc7 RL	311	while (loop--) {
	312	struct stat buf;
	313
f7b4eca4	314	dbg("looking for '%s'", filename);
29fd7e67	315	retval = stat(filename, &buf);
c5118442	316	if (retval == 0)
29fd7e67	317	goto exit;
29fd7e67	318
f7b4eca4	319	/* sleep to give the kernel a chance to create the dev file */
29fd7e67 GKH	320	sleep(1);
	321	}
	322	retval = -ENODEV;
	323	exit:
	324	return retval;
	325	}
	326
eb10f97f	327	int udev_add_device(char path, char subsystem, int fake)
ea733a2f	328	{
30defadd	329	struct sysfs_class_device *class_dev = NULL;
5840bc63	330	struct udevice dev;
ea733a2f GKH	331	int retval = -EINVAL;
ea733a2f GKH	332
f3b04a2e GKH	333	memset(&dev, 0x00, sizeof(dev));
f3b04a2e GKH	334
ea733a2f GKH	335	/* for now, the block layer is the only place where block devices are */
ea733a2f GKH	336	if (strcmp(subsystem, "block") == 0)
5840bc63	337	dev.type = 'b';
ea733a2f	338	else
5840bc63	339	dev.type = 'c';
ea733a2f	340
5840bc63	341	retval = sleep_for_dev(path);
c5118442	342	if (retval != 0)
29fd7e67	343	goto exit;
63dde9f8	344
5840bc63	345	class_dev = get_class_dev(path);
ea733a2f GKH	346	if (class_dev == NULL)
	347	goto exit;
	348
30defadd	349	retval = get_major_minor(class_dev, &dev);
c5118442	350	if (retval != 0) {
ca999860	351	dbg("get_major_minor failed");
ea733a2f GKH	352	goto exit;
	353	}
	354
30defadd	355	retval = namedev_name_device(class_dev, &dev);
c5118442	356	if (retval != 0)
30defadd GKH	357	goto exit;
30defadd GKH	358
eb10f97f GKH	359	if (!fake) {
	360	retval = udevdb_add_dev(path, &dev);
	361	if (retval != 0)
	362	dbg("udevdb_add_dev failed, but we are going to try "
	363	"to create the node anyway. But remove might not "
	364	"work properly for this device.");
ca999860	365
eb10f97f	366	}
f7b4eca4	367	dbg("name='%s'", dev.name);
eb10f97f	368	retval = create_node(&dev, fake);
ea733a2f	369
eb10f97f	370	if ((retval == 0) && (!fake))
7ac0feeb	371	sysbus_send_create(&dev, path);
5aebfbcb	372
ea733a2f	373	exit:
30defadd GKH	374	if (class_dev)
	375	sysfs_close_class_device(class_dev);
	376
ea733a2f GKH	377	return retval;
ea733a2f GKH	378	}