[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>
#include <net/if.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <linux/sockios.h>
#include <pwd.h>

#include "libsysfs/sysfs/libsysfs.h"
#include "udev.h"
#include "udev_lib.h"
#include "udev_version.h"
#include "logging.h"
#include "namedev.h"
#include "udevdb.h"

#include "selinux.h"

/*
 * the major/minor of a device is stored in a file called "dev"
 * The number is stored in decimal values in the format: M:m
 */
static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
{
	struct sysfs_attribute *attr = NULL;

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

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

	return 0;
error:
	return -1;
}

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

static int make_node(char *file, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
{
	struct stat stats;
	int retval = 0;

	if (stat(file, &stats) != 0)
		goto create;

	/* preserve node with already correct numbers, to not change the inode number */
	if (((stats.st_mode & S_IFMT) == S_IFBLK || (stats.st_mode & S_IFMT) == S_IFCHR) &&
	    (stats.st_rdev == makedev(major, minor))) {
		dbg("preserve file '%s', cause it has correct dev_t", file);
		selinux_setfilecon(file,stats.st_mode);
		goto perms;
	}

	if (unlink(file) != 0)
		dbg("unlink(%s) failed with error '%s'", file, strerror(errno));
	else
		dbg("already present file '%s' unlinked", file);

create:
	selinux_setfscreatecon(file, mode);
	retval = mknod(file, mode, makedev(major, minor));
	if (retval != 0) {
		dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
		    file, mode, major, minor, strerror(errno));
		goto exit;
	}

perms:
	dbg("chmod(%s, %#o)", file, mode);
	if (chmod(file, mode) != 0) {
		dbg("chmod(%s, %#o) failed with error '%s'", file, mode, strerror(errno));
		goto exit;
	}

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

exit:
	return retval;
}

static int create_node(struct udevice *udev)
{
	char filename[NAME_SIZE];
	char linkname[NAME_SIZE];
	char linktarget[NAME_SIZE];
	char partitionname[NAME_SIZE];
	uid_t uid = 0;
	gid_t gid = 0;
	int i;
	int tail;
	char *pos;
	int len;

	strfieldcpy(filename, udev_root);
	strfieldcat(filename, udev->name);

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

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

	if (udev->owner[0] != '\0') {
		char *endptr;
		unsigned long id = strtoul(udev->owner, &endptr, 10);
		if (endptr[0] == '\0')
			uid = (uid_t) id;
		else {
			struct passwd *pw;

			pw = getpwnam(udev->owner);
			if (pw == NULL)
				dbg("specified user unknown '%s'", udev->owner);
			else
				uid = pw->pw_uid;
		}
	}

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

	if (!udev->test_run) {
		info("creating device node '%s'", filename);
		if (make_node(filename, udev->major, udev->minor, udev->mode, uid, gid) != 0)
			goto error;
	} else {
		info("creating device node '%s', major = '%d', minor = '%d', "
		     "mode = '%#o', uid = '%d', gid = '%d'", filename,
		     udev->major, udev->minor, (mode_t)udev->mode, uid, gid);
	}

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

	/* create symlink(s) if requested */
	foreach_strpart(udev->symlink, " ", pos, len) {
		strfieldcpymax(linkname, pos, len+1);
		strfieldcpy(filename, udev_root);
		strfieldcat(filename, linkname);
		dbg("symlink '%s' to node '%s' requested", filename, udev->name);
		if (!udev->test_run)
			if (strrchr(linkname, '/'))
				create_path(filename);

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

		strfieldcat(linktarget, &udev->name[tail]);

		dbg("symlink(%s, %s)", linktarget, filename);
		if (!udev->test_run) {
			selinux_setfscreatecon(filename, S_IFLNK);
			unlink(filename);
			if (symlink(linktarget, filename) != 0)
				dbg("symlink(%s, %s) failed with error '%s'",
				    linktarget, filename, strerror(errno));
		}
	}

	return 0;
error:
	return -1;
}

static int rename_net_if(struct udevice *udev)
{
	int sk;
	struct ifreq ifr;
	int retval;

	dbg("changing net interface name from '%s' to '%s'", udev->kernel_name, udev->name);
	if (udev->test_run)
		return 0;

	sk = socket(PF_INET, SOCK_DGRAM, 0);
	if (sk < 0) {
		dbg("error opening socket");
		return -1;
	}

	memset(&ifr, 0x00, sizeof(struct ifreq));
	strfieldcpy(ifr.ifr_name, udev->kernel_name);
	strfieldcpy(ifr.ifr_newname, udev->name);

	retval = ioctl(sk, SIOCSIFNAME, &ifr);
	if (retval != 0)
		dbg("error changing net interface name");
	close(sk);

	return retval;
}

int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
{
	char *pos;
	int retval = 0;

	if (udev->type == 'b' || udev->type == 'c') {
		retval = get_major_minor(class_dev, udev);
		if (retval != 0) {
			dbg("no dev-file found, do nothing");
			return 0;
		}
	}

	if (namedev_name_device(udev, class_dev) != 0)
		goto exit;

	dbg("adding name='%s'", udev->name);

	selinux_init();

	if (udev->type == 'b' || udev->type == 'c') {
		retval = create_node(udev);
		if (retval != 0)
			goto exit;

		if (udevdb_add_dev(udev) != 0)
			dbg("udevdb_add_dev failed, but we create the node anyway, "
			    "remove might not work for custom names");

		/* use full path to the environment */
		snprintf(udev->devname, NAME_SIZE-1, "%s%s", udev_root, udev->name);

	} else if (udev->type == 'n') {
		/* look if we want to change the name of the netif */
		if (strcmp(udev->name, udev->kernel_name) != 0) {
			retval = rename_net_if(udev);
			if (retval != 0)
				goto exit;

			/* we've changed the name, now fake the devpath,
			 * cause original kernel name sleeps with the fishes
			 * and we don't get any event from the kernel now
			 */
			pos = strrchr(udev->devpath, '/');
			if (pos != NULL) {
				pos[1] = '\0';
				strfieldcat(udev->devpath, udev->name);
				setenv("DEVPATH", udev->devpath, 1);
			}

			/* use netif name for the environment */
			strfieldcpy(udev->devname, udev->name);
		}
	}

exit:
	selinux_restore();

	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>
10950dfe GKH	32	#include <grp.h>
f61d732a KS	33	#include <net/if.h>
	34	#include <sys/socket.h>
	35	#include <sys/ioctl.h>
	36	#include <linux/sockios.h>
10950dfe	37	#include <pwd.h>
ea733a2f	38
c80da508	39	#include "libsysfs/sysfs/libsysfs.h"
ea733a2f	40	#include "udev.h"
c81b35c0	41	#include "udev_lib.h"
ea733a2f	42	#include "udev_version.h"
54988802	43	#include "logging.h"
ea733a2f	44	#include "namedev.h"
8e41d35d	45	#include "udevdb.h"
ea733a2f	46
9825617b HH	47	#include "selinux.h"
9825617b HH	48
707680b1 KS	49	/*
	50	* the major/minor of a device is stored in a file called "dev"
	51	* The number is stored in decimal values in the format: M:m
ea733a2f	52	*/
30defadd	53	static int get_major_minor(struct sysfs_class_device class_dev, struct udevice udev)
ea733a2f	54	{
5d4754f1	55	struct sysfs_attribute *attr = NULL;
ea733a2f	56
5d4754f1 DS	57	attr = sysfs_get_classdev_attr(class_dev, "dev");
5d4754f1 DS	58	if (attr == NULL)
bbbe503e	59	goto error;
5d4754f1	60	dbg("dev='%s'", attr->value);
ea733a2f	61
5d4754f1	62	if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
bbbe503e	63	goto error;
f7b4eca4	64	dbg("found major=%d, minor=%d", udev->major, udev->minor);
ea733a2f	65
bbbe503e KS	66	return 0;
	67	error:
	68	return -1;
ea733a2f GKH	69	}
ea733a2f GKH	70
3d150dfb KS	71	static int create_path(char *file)
	72	{
	73	char p[NAME_SIZE];
	74	char *pos;
	75	int retval;
	76	struct stat stats;
	77
c472e3c8	78	strfieldcpy(p, file);
3d150dfb KS	79	pos = strchr(p+1, '/');
	80	while (1) {
	81	pos = strchr(pos+1, '/');
	82	if (pos == NULL)
	83	break;
	84	*pos = 0x00;
	85	if (stat(p, &stats)) {
9825617b	86	selinux_setfscreatecon(p, S_IFDIR);
3d150dfb	87	retval = mkdir(p, 0755);
c5118442	88	if (retval != 0) {
3d150dfb KS	89	dbg("mkdir(%s) failed with error '%s'",
	90	p, strerror(errno));
	91	return retval;
	92	}
	93	dbg("created '%s'", p);
9825617b HH	94	} else {
9825617b HH	95	selinux_setfilecon(p, S_IFDIR);
3d150dfb KS	96	}
	97	*pos = '/';
	98	}
	99	return 0;
	100	}
	101
49747bdc	102	static int make_node(char *file, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
50e5de03	103	{
49747bdc KS	104	struct stat stats;
	105	int retval = 0;
	106
	107	if (stat(file, &stats) != 0)
	108	goto create;
	109
	110	/* preserve node with already correct numbers, to not change the inode number */
	111	if (((stats.st_mode & S_IFMT) == S_IFBLK \|\| (stats.st_mode & S_IFMT) == S_IFCHR) &&
	112	(stats.st_rdev == makedev(major, minor))) {
	113	dbg("preserve file '%s', cause it has correct dev_t", file);
9825617b	114	selinux_setfilecon(file,stats.st_mode);
49747bdc KS	115	goto perms;
	116	}
	117
	118	if (unlink(file) != 0)
	119	dbg("unlink(%s) failed with error '%s'", file, strerror(errno));
	120	else
	121	dbg("already present file '%s' unlinked", file);
50e5de03	122
49747bdc	123	create:
9825617b	124	selinux_setfscreatecon(file, mode);
49747bdc	125	retval = mknod(file, mode, makedev(major, minor));
50e5de03 KS	126	if (retval != 0) {
50e5de03 KS	127	dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
49747bdc	128	file, mode, major, minor, strerror(errno));
bbbe503e	129	goto exit;
50e5de03 KS	130	}
50e5de03 KS	131
49747bdc KS	132	perms:
	133	dbg("chmod(%s, %#o)", file, mode);
	134	if (chmod(file, mode) != 0) {
	135	dbg("chmod(%s, %#o) failed with error '%s'", file, mode, strerror(errno));
bbbe503e	136	goto exit;
50e5de03 KS	137	}
	138
	139	if (uid != 0 \|\| gid != 0) {
49747bdc KS	140	dbg("chown(%s, %u, %u)", file, uid, gid);
49747bdc KS	141	if (chown(file, uid, gid) != 0) {
50e5de03	142	dbg("chown(%s, %u, %u) failed with error '%s'",
49747bdc	143	file, uid, gid, strerror(errno));
bbbe503e	144	goto exit;
50e5de03 KS	145	}
	146	}
	147
bbbe503e KS	148	exit:
bbbe503e KS	149	return retval;
50e5de03 KS	150	}
50e5de03 KS	151
7a947ce5	152	static int create_node(struct udevice *udev)
97853b4f	153	{
9fe3f9a9 KS	154	char filename[NAME_SIZE];
	155	char linkname[NAME_SIZE];
	156	char linktarget[NAME_SIZE];
	157	char partitionname[NAME_SIZE];
e308ebb7 GKH	158	uid_t uid = 0;
e308ebb7 GKH	159	gid_t gid = 0;
3d150dfb KS	160	int i;
3d150dfb KS	161	int tail;
ef672b3d KS	162	char *pos;
ef672b3d KS	163	int len;
3d150dfb	164
c472e3c8	165	strfieldcpy(filename, udev_root);
7a947ce5	166	strfieldcat(filename, udev->name);
5840bc63	167
7a947ce5	168	switch (udev->type) {
1331c889	169	case 'b':
7a947ce5	170	udev->mode \|= S_IFBLK;
1331c889 GKH	171	break;
	172	case 'c':
	173	case 'u':
7a947ce5	174	udev->mode \|= S_IFCHR;
1331c889 GKH	175	break;
1331c889 GKH	176	case 'p':
7a947ce5	177	udev->mode \|= S_IFIFO;
1331c889 GKH	178	break;
1331c889 GKH	179	default:
7a947ce5	180	dbg("unknown node type %c\n", udev->type);
1331c889 GKH	181	return -EINVAL;
1331c889 GKH	182	}
0abf54fc	183
3d150dfb	184	/* create parent directories if needed */
7a947ce5	185	if (strrchr(udev->name, '/'))
3d150dfb	186	create_path(filename);
218eae87	187
7a947ce5	188	if (udev->owner[0] != '\0') {
c19a6b30	189	char *endptr;
7a947ce5	190	unsigned long id = strtoul(udev->owner, &endptr, 10);
765cbd97	191	if (endptr[0] == '\0')
c19a6b30	192	uid = (uid_t) id;
10950dfe	193	else {
5895eb31	194	struct passwd *pw;
534c853d	195
7a947ce5	196	pw = getpwnam(udev->owner);
765cbd97	197	if (pw == NULL)
7a947ce5	198	dbg("specified user unknown '%s'", udev->owner);
10950dfe GKH	199	else
	200	uid = pw->pw_uid;
	201	}
c19a6b30 KS	202	}
c19a6b30 KS	203
7a947ce5	204	if (udev->group[0] != '\0') {
c19a6b30	205	char *endptr;
7a947ce5	206	unsigned long id = strtoul(udev->group, &endptr, 10);
765cbd97	207	if (endptr[0] == '\0')
c19a6b30	208	gid = (gid_t) id;
10950dfe	209	else {
7a947ce5	210	struct group *gr = getgrnam(udev->group);
765cbd97	211	if (gr == NULL)
7a947ce5	212	dbg("specified group unknown '%s'", udev->group);
10950dfe GKH	213	else
	214	gid = gr->gr_gid;
	215	}
c19a6b30 KS	216	}
c19a6b30 KS	217
7a947ce5	218	if (!udev->test_run) {
50e5de03	219	info("creating device node '%s'", filename);
7a947ce5	220	if (make_node(filename, udev->major, udev->minor, udev->mode, uid, gid) != 0)
bbbe503e	221	goto error;
ab2e5bd9 GKH	222	} else {
	223	info("creating device node '%s', major = '%d', minor = '%d', "
	224	"mode = '%#o', uid = '%d', gid = '%d'", filename,
7a947ce5	225	udev->major, udev->minor, (mode_t)udev->mode, uid, gid);
ab2e5bd9	226	}
50e5de03	227
bbbe503e	228	/* create all_partitions if requested */
7a947ce5 KS	229	if (udev->partitions > 0) {
	230	info("creating device partition nodes '%s[1-%i]'", filename, udev->partitions);
	231	if (!udev->test_run) {
	232	for (i = 1; i <= udev->partitions; i++) {
c58e36c0 KS	233	strfieldcpy(partitionname, filename);
c58e36c0 KS	234	strintcat(partitionname, i);
7a947ce5	235	make_node(partitionname, udev->major, udev->minor + i, udev->mode, uid, gid);
ab2e5bd9	236	}
50e5de03	237	}
3d150dfb KS	238	}
3d150dfb KS	239
bbbe503e	240	/* create symlink(s) if requested */
7a947ce5	241	foreach_strpart(udev->symlink, " ", pos, len) {
17794d77	242	strfieldcpymax(linkname, pos, len+1);
9fe3f9a9 KS	243	strfieldcpy(filename, udev_root);
9fe3f9a9 KS	244	strfieldcat(filename, linkname);
7a947ce5 KS	245	dbg("symlink '%s' to node '%s' requested", filename, udev->name);
7a947ce5 KS	246	if (!udev->test_run)
9fe3f9a9 KS	247	if (strrchr(linkname, '/'))
	248	create_path(filename);
	249
	250	/* optimize relative link */
	251	linktarget[0] = '\0';
	252	i = 0;
	253	tail = 0;
7a947ce5 KS	254	while ((udev->name[i] == linkname[i]) && udev->name[i]) {
7a947ce5 KS	255	if (udev->name[i] == '/')
9fe3f9a9 KS	256	tail = i+1;
	257	i++;
	258	}
	259	while (linkname[i] != '\0') {
	260	if (linkname[i] == '/')
	261	strfieldcat(linktarget, "../");
	262	i++;
	263	}
3d150dfb	264
7a947ce5	265	strfieldcat(linktarget, &udev->name[tail]);
3d150dfb	266
9fe3f9a9	267	dbg("symlink(%s, %s)", linktarget, filename);
7a947ce5	268	if (!udev->test_run) {
9825617b	269	selinux_setfscreatecon(filename, S_IFLNK);
49747bdc	270	unlink(filename);
bbbe503e	271	if (symlink(linktarget, filename) != 0)
9fe3f9a9 KS	272	dbg("symlink(%s, %s) failed with error '%s'",
9fe3f9a9 KS	273	linktarget, filename, strerror(errno));
4763256c	274	}
c19a6b30 KS	275	}
c19a6b30 KS	276
bbbe503e KS	277	return 0;
	278	error:
	279	return -1;
ea733a2f GKH	280	}
ea733a2f GKH	281
7a947ce5	282	static int rename_net_if(struct udevice *udev)
f61d732a KS	283	{
	284	int sk;
	285	struct ifreq ifr;
	286	int retval;
	287
7a947ce5 KS	288	dbg("changing net interface name from '%s' to '%s'", udev->kernel_name, udev->name);
7a947ce5 KS	289	if (udev->test_run)
bbbe503e KS	290	return 0;
bbbe503e KS	291
f61d732a KS	292	sk = socket(PF_INET, SOCK_DGRAM, 0);
	293	if (sk < 0) {
	294	dbg("error opening socket");
	295	return -1;
	296	}
	297
	298	memset(&ifr, 0x00, sizeof(struct ifreq));
7a947ce5 KS	299	strfieldcpy(ifr.ifr_name, udev->kernel_name);
7a947ce5 KS	300	strfieldcpy(ifr.ifr_newname, udev->name);
f61d732a	301
f61d732a KS	302	retval = ioctl(sk, SIOCSIFNAME, &ifr);
	303	if (retval != 0)
	304	dbg("error changing net interface name");
4a539daf	305	close(sk);
f61d732a KS	306
	307	return retval;
	308	}
	309
7a947ce5	310	int udev_add_device(struct udevice udev, struct sysfs_class_device class_dev)
ea733a2f	311	{
bbbe503e	312	char *pos;
707680b1	313	int retval = 0;
ea733a2f	314
7a947ce5 KS	315	if (udev->type == 'b' \|\| udev->type == 'c') {
7a947ce5 KS	316	retval = get_major_minor(class_dev, udev);
f61d732a	317	if (retval != 0) {
707680b1	318	dbg("no dev-file found, do nothing");
5d24c6ca	319	return 0;
f61d732a	320	}
ea733a2f GKH	321	}
ea733a2f GKH	322
7a947ce5	323	if (namedev_name_device(udev, class_dev) != 0)
30defadd GKH	324	goto exit;
30defadd GKH	325
7a947ce5	326	dbg("adding name='%s'", udev->name);
bbbe503e	327
9825617b	328	selinux_init();
5d24c6ca KS	329
5d24c6ca KS	330	if (udev->type == 'b' \|\| udev->type == 'c') {
7a947ce5	331	retval = create_node(udev);
c4603a07	332	if (retval != 0)
bbbe503e	333	goto exit;
9b28a52a	334
5d24c6ca KS	335	if (udevdb_add_dev(udev) != 0)
	336	dbg("udevdb_add_dev failed, but we create the node anyway, "
	337	"remove might not work for custom names");
f61d732a	338
5d24c6ca KS	339	/* use full path to the environment */
	340	snprintf(udev->devname, NAME_SIZE-1, "%s%s", udev_root, udev->name);
	341
	342	} else if (udev->type == 'n') {
	343	/* look if we want to change the name of the netif */
7a947ce5 KS	344	if (strcmp(udev->name, udev->kernel_name) != 0) {
7a947ce5 KS	345	retval = rename_net_if(udev);
c4603a07	346	if (retval != 0)
bbbe503e	347	goto exit;
5d24c6ca KS	348
	349	/* we've changed the name, now fake the devpath,
	350	* cause original kernel name sleeps with the fishes
	351	* and we don't get any event from the kernel now
bbbe503e	352	*/
7a947ce5	353	pos = strrchr(udev->devpath, '/');
bbbe503e KS	354	if (pos != NULL) {
bbbe503e KS	355	pos[1] = '\0';
7a947ce5	356	strfieldcat(udev->devpath, udev->name);
5d24c6ca	357	setenv("DEVPATH", udev->devpath, 1);
bbbe503e	358	}
9b28a52a	359
5d24c6ca KS	360	/* use netif name for the environment */
	361	strfieldcpy(udev->devname, udev->name);
	362	}
f61d732a	363	}
ea733a2f GKH	364
ea733a2f GKH	365	exit:
9825617b	366	selinux_restore();
30defadd	367
ea733a2f GKH	368	return retval;
ea733a2f GKH	369	}