delete all Makefiles and move udev source to udev/

1 files changed, 1618 insertions, 0 deletions

diff --git a/udev/udev_rules.c b/udev/udev_rules.c
new file mode 100644
index 0000000000..ea850a84c3
--- /dev/null
+++ b/udev/udev_rules.c
@@ -0,0 +1,1618 @@
+/*
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003-2006 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	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.,
+ *	51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <dirent.h>
+#include <fnmatch.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+
+#include "udev.h"
+#include "udev_rules.h"
+#include "udev_selinux.h"
+
+extern char **environ;
+
+/* extract possible {attr} and move str behind it */
+static char *get_format_attribute(char **str)
+{
+	char *pos;
+	char *attr = NULL;
+
+	if (*str[0] == '{') {
+		pos = strchr(*str, '}');
+		if (pos == NULL) {
+			err("missing closing brace for format\n");
+			return NULL;
+		}
+		pos[0] = '\0';
+		attr = *str+1;
+		*str = pos+1;
+		dbg("attribute='%s', str='%s'\n", attr, *str);
+	}
+	return attr;
+}
+
+/* extract possible format length and move str behind it*/
+static int get_format_len(char **str)
+{
+	int num;
+	char *tail;
+
+	if (isdigit(*str[0])) {
+		num = (int) strtoul(*str, &tail, 10);
+		if (num > 0) {
+			*str = tail;
+			dbg("format length=%i\n", num);
+			return num;
+		} else {
+			err("format parsing error '%s'\n", *str);
+		}
+	}
+	return -1;
+}
+
+static int get_key(char **line, char **key, char **value)
+{
+	char *linepos;
+	char *temp;
+
+	linepos = *line;
+	if (linepos == NULL)
+		return -1;
+
+	/* skip whitespace */
+	while (isspace(linepos[0]))
+		linepos++;
+
+	/* get the key */
+	temp = strchr(linepos, '=');
+	if (temp == NULL || temp == linepos)
+		return -1;
+	temp[0] = '\0';
+	*key = linepos;
+	linepos = &temp[1];
+
+	/* get a quoted value */
+	if (linepos[0] == '"' || linepos[0] == '\'') {
+		temp = strchr(&linepos[1], linepos[0]);
+		if (temp != NULL) {
+			temp[0] = '\0';
+			*value = &linepos[1];
+			goto out;
+		}
+	}
+
+	/* get the value*/
+	temp = strchr(linepos, '\n');
+	if (temp != NULL)
+		temp[0] = '\0';
+	*value = linepos;
+out:
+	return 0;
+}
+
+static int run_program(const char *command, const char *subsystem,
+		char *result, size_t ressize, size_t *reslen)
+{
+	int status;
+	int outpipe[2] = {-1, -1};
+	int errpipe[2] = {-1, -1};
+	pid_t pid;
+	char arg[PATH_SIZE];
+	char program[PATH_SIZE];
+	char *argv[(sizeof(arg) / 2) + 1];
+	int devnull;
+	int i;
+	int retval = 0;
+
+	/* build argv from comand */
+	strlcpy(arg, command, sizeof(arg));
+	i = 0;
+	if (strchr(arg, ' ') != NULL) {
+		char *pos = arg;
+
+		while (pos != NULL) {
+			if (pos[0] == '\'') {
+				/* don't separate if in apostrophes */
+				pos++;
+				argv[i] = strsep(&pos, "\'");
+				while (pos != NULL && pos[0] == ' ')
+					pos++;
+			} else {
+				argv[i] = strsep(&pos, " ");
+			}
+			dbg("arg[%i] '%s'\n", i, argv[i]);
+			i++;
+		}
+		argv[i] = NULL;
+	} else {
+		argv[0] = arg;
+		argv[1] = NULL;
+	}
+	info("'%s'\n", command);
+
+	/* prepare pipes from child to parent */
+	if (result != NULL || udev_log_priority >= LOG_INFO) {
+		if (pipe(outpipe) != 0) {
+			err("pipe failed: %s\n", strerror(errno));
+			return -1;
+		}
+	}
+	if (udev_log_priority >= LOG_INFO) {
+		if (pipe(errpipe) != 0) {
+			err("pipe failed: %s\n", strerror(errno));
+			return -1;
+		}
+	}
+
+	/* allow programs in /lib/udev called without the path */
+	if (strchr(argv[0], '/') == NULL) {
+		strlcpy(program, "/lib/udev/", sizeof(program));
+		strlcat(program, argv[0], sizeof(program));
+		argv[0] = program;
+	}
+
+	pid = fork();
+	switch(pid) {
+	case 0:
+		/* child closes parent ends of pipes */
+		if (outpipe[READ_END] > 0)
+			close(outpipe[READ_END]);
+		if (errpipe[READ_END] > 0)
+			close(errpipe[READ_END]);
+
+		/* discard child output or connect to pipe */
+		devnull = open("/dev/null", O_RDWR);
+		if (devnull > 0) {
+			dup2(devnull, STDIN_FILENO);
+			if (outpipe[WRITE_END] < 0)
+				dup2(devnull, STDOUT_FILENO);
+			if (errpipe[WRITE_END] < 0)
+				dup2(devnull, STDERR_FILENO);
+			close(devnull);
+		} else
+			err("open /dev/null failed: %s\n", strerror(errno));
+		if (outpipe[WRITE_END] > 0) {
+			dup2(outpipe[WRITE_END], STDOUT_FILENO);
+			close(outpipe[WRITE_END]);
+		}
+		if (errpipe[WRITE_END] > 0) {
+			dup2(errpipe[WRITE_END], STDERR_FILENO);
+			close(errpipe[WRITE_END]);
+		}
+		execv(argv[0], argv);
+		if (errno == ENOENT || errno == ENOTDIR) {
+			/* may be on a filesytem which is not mounted right now */
+			info("program '%s' not found\n", argv[0]);
+		} else {
+			/* other problems */
+			err("exec of program '%s' failed\n", argv[0]);
+		}
+		_exit(1);
+	case -1:
+		err("fork of '%s' failed: %s\n", argv[0], strerror(errno));
+		return -1;
+	default:
+		/* read from child if requested */
+		if (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
+			ssize_t count;
+			size_t respos = 0;
+
+			/* parent closes child ends of pipes */
+			if (outpipe[WRITE_END] > 0)
+				close(outpipe[WRITE_END]);
+			if (errpipe[WRITE_END] > 0)
+				close(errpipe[WRITE_END]);
+
+			/* read child output */
+			while (outpipe[READ_END] > 0 || errpipe[READ_END] > 0) {
+				int fdcount;
+				fd_set readfds;
+
+				FD_ZERO(&readfds);
+				if (outpipe[READ_END] > 0)
+					FD_SET(outpipe[READ_END], &readfds);
+				if (errpipe[READ_END] > 0)
+					FD_SET(errpipe[READ_END], &readfds);
+				fdcount = select(UDEV_MAX(outpipe[READ_END], errpipe[READ_END])+1, &readfds, NULL, NULL, NULL);
+				if (fdcount < 0) {
+					if (errno == EINTR)
+						continue;
+					retval = -1;
+					break;
+				}
+
+				/* get stdout */
+				if (outpipe[READ_END] > 0 && FD_ISSET(outpipe[READ_END], &readfds)) {
+					char inbuf[1024];
+					char *pos;
+					char *line;
+
+					count = read(outpipe[READ_END], inbuf, sizeof(inbuf)-1);
+					if (count <= 0) {
+						close(outpipe[READ_END]);
+						outpipe[READ_END] = -1;
+						if (count < 0) {
+							err("stdin read failed: %s\n", strerror(errno));
+							retval = -1;
+						}
+						continue;
+					}
+					inbuf[count] = '\0';
+
+					/* store result for rule processing */
+					if (result) {
+						if (respos + count < ressize) {
+							memcpy(&result[respos], inbuf, count);
+							respos += count;
+						} else {
+							err("ressize %ld too short\n", (long)ressize);
+							retval = -1;
+						}
+					}
+					pos = inbuf;
+					while ((line = strsep(&pos, "\n")))
+						if (pos || line[0] != '\0')
+							info("'%s' (stdout) '%s'\n", argv[0], line);
+				}
+
+				/* get stderr */
+				if (errpipe[READ_END] > 0 && FD_ISSET(errpipe[READ_END], &readfds)) {
+					char errbuf[1024];
+					char *pos;
+					char *line;
+
+					count = read(errpipe[READ_END], errbuf, sizeof(errbuf)-1);
+					if (count <= 0) {
+						close(errpipe[READ_END]);
+						errpipe[READ_END] = -1;
+						if (count < 0)
+							err("stderr read failed: %s\n", strerror(errno));
+						continue;
+					}
+					errbuf[count] = '\0';
+					pos = errbuf;
+					while ((line = strsep(&pos, "\n")))
+						if (pos || line[0] != '\0')
+							info("'%s' (stderr) '%s'\n", argv[0], line);
+				}
+			}
+			if (outpipe[READ_END] > 0)
+				close(outpipe[READ_END]);
+			if (errpipe[READ_END] > 0)
+				close(errpipe[READ_END]);
+
+			/* return the childs stdout string */
+			if (result) {
+				result[respos] = '\0';
+				dbg("result='%s'\n", result);
+				if (reslen)
+					*reslen = respos;
+			}
+		}
+		waitpid(pid, &status, 0);
+		if (WIFEXITED(status)) {
+			info("'%s' returned with status %i\n", argv[0], WEXITSTATUS(status));
+			if (WEXITSTATUS(status) != 0)
+				retval = -1;
+		} else {
+			err("'%s' abnormal exit\n", argv[0]);
+			retval = -1;
+		}
+	}
+
+	return retval;
+}
+
+static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
+{
+	char line[LINE_SIZE];
+	const char *bufline;
+	char *linepos;
+	char *variable;
+	char *value;
+	size_t cur;
+	size_t count;
+	int lineno;
+
+	/* loop through the whole buffer */
+	lineno = 0;
+	cur = 0;
+	while (cur < bufsize) {
+		count = buf_get_line(buf, bufsize, cur);
+		bufline = &buf[cur];
+		cur += count+1;
+		lineno++;
+
+		/* eat the whitespace */
+		while ((count > 0) && isspace(bufline[0])) {
+			bufline++;
+			count--;
+		}
+		if (count == 0)
+			continue;
+
+		/* see if this is a comment */
+		if (bufline[0] == COMMENT_CHARACTER)
+			continue;
+
+		if (count >= sizeof(line)) {
+			err("line too long, conf line skipped %s, line %d\n", udev_config_filename, lineno);
+			continue;
+		}
+
+		memcpy(line, bufline, count);
+		line[count] = '\0';
+
+		linepos = line;
+		if (get_key(&linepos, &variable, &value) == 0) {
+			dbg("import '%s=%s'\n", variable, value);
+
+			/* handle device, renamed by external tool, returning new path */
+			if (strcmp(variable, "DEVPATH") == 0) {
+				info("updating devpath from '%s' to '%s'\n", udev->dev->devpath, value);
+				sysfs_device_set_values(udev->dev, value, NULL, NULL);
+			} else
+				name_list_key_add(&udev->env_list, variable, value);
+			setenv(variable, value, 1);
+		}
+	}
+
+	return 0;
+}
+
+static int import_file_into_env(struct udevice *udev, const char *filename)
+{
+	char *buf;
+	size_t bufsize;
+
+	if (file_map(filename, &buf, &bufsize) != 0) {
+		err("can't open '%s': %s\n", filename, strerror(errno));
+		return -1;
+	}
+	import_keys_into_env(udev, buf, bufsize);
+	file_unmap(buf, bufsize);
+
+	return 0;
+}
+
+static int import_program_into_env(struct udevice *udev, const char *program)
+{
+	char result[2048];
+	size_t reslen;
+
+	if (run_program(program, udev->dev->subsystem, result, sizeof(result), &reslen) != 0)
+		return -1;
+	return import_keys_into_env(udev, result, reslen);
+}
+
+static int import_parent_into_env(struct udevice *udev, const char *filter)
+{
+	struct sysfs_device *dev_parent;
+	int rc = -1;
+
+	dev_parent = sysfs_device_get_parent(udev->dev);
+	if (dev_parent != NULL) {
+		struct udevice *udev_parent;
+		struct name_entry *name_loop;
+
+		dbg("found parent '%s', get the node name\n", dev_parent->devpath);
+		udev_parent = udev_device_init(NULL);
+		if (udev_parent == NULL)
+			return -1;
+		/* import the udev_db of the parent */
+		if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
+			dbg("import stored parent env '%s'\n", udev_parent->name);
+			list_for_each_entry(name_loop, &udev_parent->env_list, node) {
+				char name[NAME_SIZE];
+				char *pos;
+
+				strlcpy(name, name_loop->name, sizeof(name));
+				pos = strchr(name, '=');
+				if (pos) {
+					pos[0] = '\0';
+					pos++;
+					if (fnmatch(filter, name, 0) == 0) {
+						dbg("import key '%s'\n", name_loop->name);
+						name_list_add(&udev->env_list, name_loop->name, 0);
+						setenv(name, pos, 1);
+					} else
+						dbg("skip key '%s'\n", name_loop->name);
+				}
+			}
+			rc = 0;
+		} else
+			dbg("parent not found in database\n");
+		udev_device_cleanup(udev_parent);
+	}
+
+	return rc;
+}
+
+static int pass_env_to_socket(const char *sockpath, const char *devpath, const char *action)
+{
+	int sock;
+	struct sockaddr_un saddr;
+	socklen_t saddrlen;
+	struct stat stats;
+	char buf[2048];
+	size_t bufpos = 0;
+	int i;
+	ssize_t count;
+	int retval = 0;
+
+	dbg("pass environment to socket '%s'\n", sockpath);
+	sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
+	memset(&saddr, 0x00, sizeof(struct sockaddr_un));
+	saddr.sun_family = AF_LOCAL;
+	if (sockpath[0] == '@') {
+		/* abstract namespace socket requested */
+		strlcpy(&saddr.sun_path[1], &sockpath[1], sizeof(saddr.sun_path)-1);
+		saddrlen = offsetof(struct sockaddr_un, sun_path) + 1 + strlen(&saddr.sun_path[1]);
+	} else if (stat(sockpath, &stats) == 0 && S_ISSOCK(stats.st_mode)) {
+		/* existing socket file */
+		strlcpy(saddr.sun_path, sockpath, sizeof(saddr.sun_path));
+		saddrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path);
+	} else {
+		/* no socket file, assume abstract namespace socket */
+		strlcpy(&saddr.sun_path[1], sockpath, sizeof(saddr.sun_path)-1);
+		saddrlen = offsetof(struct sockaddr_un, sun_path) + 1 + strlen(&saddr.sun_path[1]);
+	}
+
+	bufpos = snprintf(buf, sizeof(buf)-1, "%s@%s", action, devpath);
+	bufpos++;
+	for (i = 0; environ[i] != NULL && bufpos < (sizeof(buf)-1); i++) {
+		bufpos += strlcpy(&buf[bufpos], environ[i], sizeof(buf) - bufpos-1);
+		bufpos++;
+	}
+	if (bufpos > sizeof(buf))
+		bufpos = sizeof(buf);
+
+	count = sendto(sock, &buf, bufpos, 0, (struct sockaddr *)&saddr, saddrlen);
+	if (count < 0)
+		retval = -1;
+	info("passed %zi bytes to socket '%s', \n", count, sockpath);
+
+	close(sock);
+	return retval;
+}
+
+int udev_rules_run(struct udevice *udev)
+{
+	struct name_entry *name_loop;
+	int retval = 0;
+
+	dbg("executing run list\n");
+	list_for_each_entry(name_loop, &udev->run_list, node) {
+		if (strncmp(name_loop->name, "socket:", strlen("socket:")) == 0) {
+			pass_env_to_socket(&name_loop->name[strlen("socket:")], udev->dev->devpath, udev->action);
+		} else {
+			char program[PATH_SIZE];
+
+			strlcpy(program, name_loop->name, sizeof(program));
+			udev_rules_apply_format(udev, program, sizeof(program));
+			if (run_program(program, udev->dev->subsystem, NULL, 0, NULL) != 0)
+				if (!name_loop->ignore_error)
+					retval = -1;
+		}
+	}
+
+	return retval;
+}
+
+#define WAIT_LOOP_PER_SECOND		50
+static int wait_for_file(struct udevice *udev, const char *file, int timeout)
+{
+	char filepath[PATH_SIZE];
+	char devicepath[PATH_SIZE] = "";
+	struct stat stats;
+	int loop = timeout * WAIT_LOOP_PER_SECOND;
+
+	/* a relative path is a device attribute */
+	if (file[0] != '/') {
+		strlcpy(devicepath, sysfs_path, sizeof(devicepath));
+		strlcat(devicepath, udev->dev->devpath, sizeof(devicepath));
+
+		strlcpy(filepath, devicepath, sizeof(filepath));
+		strlcat(filepath, "/", sizeof(filepath));
+		strlcat(filepath, file, sizeof(filepath));
+		file = filepath;
+	}
+
+	dbg("will wait %i sec for '%s'\n", timeout, file);
+	while (--loop) {
+		/* lookup file */
+		if (stat(file, &stats) == 0) {
+			info("file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
+			return 0;
+		}
+		/* make sure, the device did not disappear in the meantime */
+		if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
+			info("device disappeared while waiting for '%s'\n", file);
+			return -2;
+		}
+		info("wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
+		usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
+	}
+	info("waiting for '%s' failed\n", file);
+	return -1;
+}
+
+/* handle "[$SUBSYSTEM/$KERNEL]<attribute>" lookup */
+static int attr_get_by_subsys_id(const char *attrstr, char *devpath, size_t len, char **attr)
+{
+	char subsys[NAME_SIZE];
+	char *attrib;
+	char *id;
+	int found = 0;
+
+	if (attrstr[0] != '[')
+		goto out;
+
+	strlcpy(subsys, &attrstr[1], sizeof(subsys));
+
+	attrib = strchr(subsys, ']');
+	if (attrib == NULL)
+		goto out;
+	attrib[0] = '\0';
+	attrib = &attrib[1];
+
+	id = strchr(subsys, '/');
+	if (id == NULL)
+		goto out;
+	id[0] = '\0';
+	id = &id[1];
+
+	if (sysfs_lookup_devpath_by_subsys_id(devpath, len, subsys, id)) {
+		if (attr != NULL) {
+			if (attrib[0] != '\0')
+				*attr = attrib;
+			else
+				*attr = NULL;
+		}
+		found = 1;
+	}
+out:
+	return found;
+}
+
+static int attr_subst_subdir(char *attr, size_t len)
+{
+	char *pos;
+	int found = 0;
+
+	pos = strstr(attr, "/*/");
+	if (pos != NULL) {
+		char str[PATH_SIZE];
+		DIR *dir;
+
+		pos[1] = '\0';
+		strlcpy(str, &pos[2], sizeof(str));
+		dir = opendir(attr);
+		if (dir != NULL) {
+			struct dirent *dent;
+
+			for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+				struct stat stats;
+
+				if (dent->d_name[0] == '.')
+					continue;
+				strlcat(attr, dent->d_name, len);
+				strlcat(attr, str, len);
+				if (stat(attr, &stats) == 0) {
+					found = 1;
+					break;
+				}
+				pos[1] = '\0';
+			}
+			closedir(dir);
+		}
+		if (!found)
+			strlcat(attr, str, len);
+	}
+
+	return found;
+}
+
+void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
+{
+	char temp[PATH_SIZE];
+	char temp2[PATH_SIZE];
+	char *head, *tail, *pos, *cpos, *attr, *rest;
+	int len;
+	int i;
+	int count;
+	enum subst_type {
+		SUBST_UNKNOWN,
+		SUBST_DEVPATH,
+		SUBST_KERNEL,
+		SUBST_KERNEL_NUMBER,
+		SUBST_ID,
+		SUBST_DRIVER,
+		SUBST_MAJOR,
+		SUBST_MINOR,
+		SUBST_RESULT,
+		SUBST_ATTR,
+		SUBST_PARENT,
+		SUBST_TEMP_NODE,
+		SUBST_NAME,
+		SUBST_LINKS,
+		SUBST_ROOT,
+		SUBST_SYS,
+		SUBST_ENV,
+	};
+	static const struct subst_map {
+		char *name;
+		char fmt;
+		enum subst_type type;
+	} map[] = {
+		{ .name = "devpath",	.fmt = 'p',	.type = SUBST_DEVPATH },
+		{ .name = "number",	.fmt = 'n',	.type = SUBST_KERNEL_NUMBER },
+		{ .name = "kernel",	.fmt = 'k',	.type = SUBST_KERNEL },
+		{ .name = "id",		.fmt = 'b',	.type = SUBST_ID },
+		{ .name = "driver",	.fmt = 'd',	.type = SUBST_DRIVER },
+		{ .name = "major",	.fmt = 'M',	.type = SUBST_MAJOR },
+		{ .name = "minor",	.fmt = 'm',	.type = SUBST_MINOR },
+		{ .name = "result",	.fmt = 'c',	.type = SUBST_RESULT },
+		{ .name = "attr",	.fmt = 's',	.type = SUBST_ATTR },
+		{ .name = "sysfs",	.fmt = 's',	.type = SUBST_ATTR },
+		{ .name = "parent",	.fmt = 'P',	.type = SUBST_PARENT },
+		{ .name = "tempnode",	.fmt = 'N',	.type = SUBST_TEMP_NODE },
+		{ .name = "name",	.fmt = 'D',	.type = SUBST_NAME },
+		{ .name = "links",	.fmt = 'L',	.type = SUBST_LINKS },
+		{ .name = "root",	.fmt = 'r',	.type = SUBST_ROOT },
+		{ .name = "sys",	.fmt = 'S',	.type = SUBST_SYS },
+		{ .name = "env",	.fmt = 'E',	.type = SUBST_ENV },
+		{ NULL, '\0', 0 }
+	};
+	enum subst_type type;
+	const struct subst_map *subst;
+
+	head = string;
+	while (1) {
+		len = -1;
+		while (head[0] != '\0') {
+			if (head[0] == '$') {
+				/* substitute named variable */
+				if (head[1] == '\0')
+					break;
+				if (head[1] == '$') {
+					strlcpy(temp, head+2, sizeof(temp));
+					strlcpy(head+1, temp, maxsize);
+					head++;
+					continue;
+				}
+				head[0] = '\0';
+				for (subst = map; subst->name; subst++) {
+					if (strncasecmp(&head[1], subst->name, strlen(subst->name)) == 0) {
+						type = subst->type;
+						tail = head + strlen(subst->name)+1;
+						dbg("will substitute format name '%s'\n", subst->name);
+						goto found;
+					}
+				}
+				head[0] = '$';
+				err("unknown format variable '%s'\n", head);
+			} else if (head[0] == '%') {
+				/* substitute format char */
+				if (head[1] == '\0')
+					break;
+				if (head[1] == '%') {
+					strlcpy(temp, head+2, sizeof(temp));
+					strlcpy(head+1, temp, maxsize);
+					head++;
+					continue;
+				}
+				head[0] = '\0';
+				tail = head+1;
+				len = get_format_len(&tail);
+				for (subst = map; subst->name; subst++) {
+					if (tail[0] == subst->fmt) {
+						type = subst->type;
+						tail++;
+						dbg("will substitute format char '%c'\n", subst->fmt);
+						goto found;
+					}
+				}
+				head[0] = '%';
+				err("unknown format char '%c'\n", tail[0]);
+			}
+			head++;
+		}
+		break;
+found:
+		attr = get_format_attribute(&tail);
+		strlcpy(temp, tail, sizeof(temp));
+		dbg("format=%i, string='%s', tail='%s'\n", type ,string, tail);
+
+		switch (type) {
+		case SUBST_DEVPATH:
+			strlcat(string, udev->dev->devpath, maxsize);
+			dbg("substitute devpath '%s'\n", udev->dev->devpath);
+			break;
+		case SUBST_KERNEL:
+			strlcat(string, udev->dev->kernel, maxsize);
+			dbg("substitute kernel name '%s'\n", udev->dev->kernel);
+			break;
+		case SUBST_KERNEL_NUMBER:
+			strlcat(string, udev->dev->kernel_number, maxsize);
+			dbg("substitute kernel number '%s'\n", udev->dev->kernel_number);
+			break;
+		case SUBST_ID:
+			if (udev->dev_parent != NULL) {
+				strlcat(string, udev->dev_parent->kernel, maxsize);
+				dbg("substitute id '%s'\n", udev->dev_parent->kernel);
+			}
+			break;
+		case SUBST_DRIVER:
+			if (udev->dev_parent != NULL) {
+				strlcat(string, udev->dev_parent->driver, maxsize);
+				dbg("substitute driver '%s'\n", udev->dev_parent->driver);
+			}
+			break;
+		case SUBST_MAJOR:
+			sprintf(temp2, "%d", major(udev->devt));
+			strlcat(string, temp2, maxsize);
+			dbg("substitute major number '%s'\n", temp2);
+			break;
+		case SUBST_MINOR:
+			sprintf(temp2, "%d", minor(udev->devt));
+			strlcat(string, temp2, maxsize);
+			dbg("substitute minor number '%s'\n", temp2);
+			break;
+		case SUBST_RESULT:
+			if (udev->program_result[0] == '\0')
+				break;
+			/* get part part of the result string */
+			i = 0;
+			if (attr != NULL)
+				i = strtoul(attr, &rest, 10);
+			if (i > 0) {
+				dbg("request part #%d of result string\n", i);
+				cpos = udev->program_result;
+				while (--i) {
+					while (cpos[0] != '\0' && !isspace(cpos[0]))
+						cpos++;
+					while (isspace(cpos[0]))
+						cpos++;
+				}
+				if (i > 0) {
+					err("requested part of result string not found\n");
+					break;
+				}
+				strlcpy(temp2, cpos, sizeof(temp2));
+				/* %{2+}c copies the whole string from the second part on */
+				if (rest[0] != '+') {
+					cpos = strchr(temp2, ' ');
+					if (cpos)
+						cpos[0] = '\0';
+				}
+				strlcat(string, temp2, maxsize);
+				dbg("substitute part of result string '%s'\n", temp2);
+			} else {
+				strlcat(string, udev->program_result, maxsize);
+				dbg("substitute result string '%s'\n", udev->program_result);
+			}
+			break;
+		case SUBST_ATTR:
+			if (attr == NULL)
+				err("missing file parameter for attr\n");
+			else {
+				char devpath[PATH_SIZE];
+				char *attrib;
+				const char *value = NULL;
+				size_t size;
+
+				if (attr_get_by_subsys_id(attr, devpath, sizeof(devpath), &attrib)) {
+					if (attrib != NULL)
+						value = sysfs_attr_get_value(devpath, attrib);
+					else
+						break;
+				}
+
+				/* try the current device, other matches may have selected */
+				if (value == NULL && udev->dev_parent != NULL && udev->dev_parent != udev->dev)
+					value = sysfs_attr_get_value(udev->dev_parent->devpath, attr);
+
+				/* look at all devices along the chain of parents */
+				if (value == NULL) {
+					struct sysfs_device *dev_parent = udev->dev;
+
+					do {
+						dbg("looking at '%s'\n", dev_parent->devpath);
+						value = sysfs_attr_get_value(dev_parent->devpath, attr);
+						if (value != NULL) {
+							strlcpy(temp2, value, sizeof(temp2));
+							break;
+						}
+						dev_parent = sysfs_device_get_parent(dev_parent);
+					} while (dev_parent != NULL);
+				}
+
+				if (value == NULL)
+					break;
+
+				/* strip trailing whitespace, and replace unwanted characters */
+				size = strlcpy(temp2, value, sizeof(temp2));
+				if (size >= sizeof(temp2))
+					size = sizeof(temp2)-1;
+				while (size > 0 && isspace(temp2[size-1]))
+					temp2[--size] = '\0';
+				count = replace_chars(temp2, ALLOWED_CHARS_INPUT);
+				if (count > 0)
+					info("%i character(s) replaced\n" , count);
+				strlcat(string, temp2, maxsize);
+				dbg("substitute sysfs value '%s'\n", temp2);
+			}
+			break;
+		case SUBST_PARENT:
+			{
+				struct sysfs_device *dev_parent;
+
+				dev_parent = sysfs_device_get_parent(udev->dev);
+				if (dev_parent != NULL) {
+					struct udevice *udev_parent;
+
+					dbg("found parent '%s', get the node name\n", dev_parent->devpath);
+					udev_parent = udev_device_init(NULL);
+					if (udev_parent != NULL) {
+						/* lookup the name in the udev_db with the DEVPATH of the parent */
+						if (udev_db_get_device(udev_parent, dev_parent->devpath) == 0) {
+							strlcat(string, udev_parent->name, maxsize);
+							dbg("substitute parent node name'%s'\n", udev_parent->name);
+						} else
+							dbg("parent not found in database\n");
+						udev_device_cleanup(udev_parent);
+					}
+				}
+			}
+			break;
+		case SUBST_TEMP_NODE:
+			if (udev->tmp_node[0] == '\0' && major(udev->devt) > 0) {
+				dbg("create temporary device node for callout\n");
+				snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
+					 udev_root, major(udev->devt), minor(udev->devt));
+				udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
+				udev_node_mknod(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
+			}
+			strlcat(string, udev->tmp_node, maxsize);
+			dbg("substitute temporary device node name '%s'\n", udev->tmp_node);
+			break;
+		case SUBST_NAME:
+			if (udev->name[0] == '\0') {
+				strlcat(string, udev->dev->kernel, maxsize);
+				dbg("substitute udev->kernel '%s'\n", udev->name);
+			} else {
+				strlcat(string, udev->name, maxsize);
+				dbg("substitute udev->name '%s'\n", udev->name);
+			}
+			break;
+		case SUBST_LINKS:
+			if (!list_empty(&udev->symlink_list)) {
+				struct name_entry *name_loop;
+				char symlinks[PATH_SIZE] = "";
+
+				list_for_each_entry(name_loop, &udev->symlink_list, node) {
+					strlcat(symlinks, name_loop->name, sizeof(symlinks));
+					strlcat(symlinks, " ", sizeof(symlinks));
+				}
+				remove_trailing_chars(symlinks, ' ');
+				strlcat(string, symlinks, maxsize);
+			}
+			break;
+		case SUBST_ROOT:
+			strlcat(string, udev_root, maxsize);
+			dbg("substitute udev_root '%s'\n", udev_root);
+			break;
+		case SUBST_SYS:
+			strlcat(string, sysfs_path, maxsize);
+			dbg("substitute sysfs_path '%s'\n", sysfs_path);
+			break;
+		case SUBST_ENV:
+			if (attr == NULL) {
+				dbg("missing attribute\n");
+				break;
+			}
+			pos = getenv(attr);
+			if (pos == NULL) {
+				dbg("env '%s' not available\n", attr);
+				break;
+			}
+			dbg("substitute env '%s=%s'\n", attr, pos);
+			strlcat(string, pos, maxsize);
+			break;
+		default:
+			err("unknown substitution type=%i\n", type);
+			break;
+		}
+		/* possibly truncate to format-char specified length */
+		if (len >= 0 && len < (int)strlen(head)) {
+			head[len] = '\0';
+			dbg("truncate to %i chars, subtitution string becomes '%s'\n", len, head);
+		}
+		strlcat(string, temp, maxsize);
+	}
+}
+
+static char *key_val(struct udev_rule *rule, struct key *key)
+{
+	return rule->buf + key->val_off;
+}
+
+static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
+{
+	return rule->buf + pair->key_name_off;
+}
+
+static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
+{
+	char value[PATH_SIZE];
+	char *key_value;
+	char *pos;
+	int match = 0;
+
+	if (key->operation != KEY_OP_MATCH &&
+	    key->operation != KEY_OP_NOMATCH)
+		return 0;
+
+	/* look for a matching string, parts are separated by '|' */
+	strlcpy(value, rule->buf + key->val_off, sizeof(value));
+	key_value = value;
+	dbg("key %s value='%s'\n", key_name, key_value);
+	while (key_value) {
+		pos = strchr(key_value, '|');
+		if (pos) {
+			pos[0] = '\0';
+			pos++;
+		}
+
+		dbg("match %s '%s' <-> '%s'\n", key_name, key_value, val);
+		match = (fnmatch(key_value, val, 0) == 0);
+		if (match)
+			break;
+
+		key_value = pos;
+	}
+
+	if (match && (key->operation == KEY_OP_MATCH)) {
+		dbg("%s is true (matching value)\n", key_name);
+		return 0;
+	}
+	if (!match && (key->operation == KEY_OP_NOMATCH)) {
+		dbg("%s is true (non-matching value)\n", key_name);
+		return 0;
+	}
+	return -1;
+}
+
+/* match a single rule against a given device and possibly its parent devices */
+static int match_rule(struct udevice *udev, struct udev_rule *rule)
+{
+	int i;
+
+	if (match_key("ACTION", rule, &rule->action, udev->action))
+		goto nomatch;
+
+	if (match_key("KERNEL", rule, &rule->kernel, udev->dev->kernel))
+		goto nomatch;
+
+	if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->dev->subsystem))
+		goto nomatch;
+
+	if (match_key("DEVPATH", rule, &rule->devpath, udev->dev->devpath))
+		goto nomatch;
+
+	if (match_key("DRIVER", rule, &rule->driver, udev->dev->driver))
+		goto nomatch;
+
+	/* match NAME against a value assigned by an earlier rule */
+	if (match_key("NAME", rule, &rule->name, udev->name))
+		goto nomatch;
+
+	/* match against current list of symlinks */
+	if (rule->symlink_match.operation == KEY_OP_MATCH ||
+	    rule->symlink_match.operation == KEY_OP_NOMATCH) {
+		struct name_entry *name_loop;
+		int match = 0;
+
+		list_for_each_entry(name_loop, &udev->symlink_list, node) {
+			if (match_key("SYMLINK", rule, &rule->symlink_match, name_loop->name) == 0) {
+				match = 1;
+				break;
+			}
+		}
+		if (!match)
+			goto nomatch;
+	}
+
+	for (i = 0; i < rule->env.count; i++) {
+		struct key_pair *pair = &rule->env.keys[i];
+
+		/* we only check for matches, assignments will be handled later */
+		if (pair->key.operation == KEY_OP_MATCH ||
+		    pair->key.operation == KEY_OP_NOMATCH) {
+			const char *key_name = key_pair_name(rule, pair);
+			const char *value = getenv(key_name);
+
+			if (!value) {
+				dbg("ENV{'%s'} is not set, treat as empty\n", key_name);
+				value = "";
+			}
+			if (match_key("ENV", rule, &pair->key, value))
+				goto nomatch;
+		}
+	}
+
+	if (rule->test.operation == KEY_OP_MATCH ||
+	    rule->test.operation == KEY_OP_NOMATCH) {
+		char filename[PATH_SIZE];
+		char devpath[PATH_SIZE];
+		char *attr;
+		struct stat statbuf;
+		int match;
+
+		strlcpy(filename, key_val(rule, &rule->test), sizeof(filename));
+		udev_rules_apply_format(udev, filename, sizeof(filename));
+
+		if (attr_get_by_subsys_id(filename, devpath, sizeof(devpath), &attr)) {
+			strlcpy(filename, sysfs_path, sizeof(filename));
+			strlcat(filename, devpath, sizeof(filename));
+			if (attr != NULL) {
+				strlcat(filename, "/", sizeof(filename));
+				strlcat(filename, attr, sizeof(filename));
+			}
+		} else if (filename[0] != '/') {
+			char tmp[PATH_SIZE];
+
+			strlcpy(tmp, sysfs_path, sizeof(tmp));
+			strlcat(tmp, udev->dev->devpath, sizeof(tmp));
+			strlcat(tmp, "/", sizeof(tmp));
+			strlcat(tmp, filename, sizeof(tmp));
+			strlcpy(filename, tmp, sizeof(filename));
+		}
+
+		attr_subst_subdir(filename, sizeof(filename));
+
+		match = (stat(filename, &statbuf) == 0);
+		info("'%s' %s", filename, match ? "exists\n" : "does not exist\n");
+		if (match && rule->test_mode_mask > 0) {
+			match = ((statbuf.st_mode & rule->test_mode_mask) > 0);
+			info("'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
+			     match ? "matches" : "does not match",
+			     rule->test_mode_mask);
+		}
+		if (match && rule->test.operation == KEY_OP_NOMATCH)
+			goto nomatch;
+		if (!match && rule->test.operation == KEY_OP_MATCH)
+			goto nomatch;
+		dbg("TEST key is true\n");
+	}
+
+	if (rule->wait_for.operation != KEY_OP_UNSET) {
+		char filename[PATH_SIZE];
+		int found;
+
+		strlcpy(filename, key_val(rule, &rule->wait_for), sizeof(filename));
+		udev_rules_apply_format(udev, filename, sizeof(filename));
+		found = (wait_for_file(udev, filename, 10) == 0);
+		if (!found && (rule->wait_for.operation != KEY_OP_NOMATCH))
+			goto nomatch;
+	}
+
+	/* check for matching sysfs attribute pairs */
+	for (i = 0; i < rule->attr.count; i++) {
+		struct key_pair *pair = &rule->attr.keys[i];
+
+		if (pair->key.operation == KEY_OP_MATCH ||
+		    pair->key.operation == KEY_OP_NOMATCH) {
+			const char *key_name = key_pair_name(rule, pair);
+			const char *key_value = key_val(rule, &pair->key);
+			char devpath[PATH_SIZE];
+			char *attrib;
+			const char *value = NULL;
+			char val[VALUE_SIZE];
+			size_t len;
+
+			if (attr_get_by_subsys_id(key_name, devpath, sizeof(devpath), &attrib)) {
+				if (attrib != NULL)
+					value = sysfs_attr_get_value(devpath, attrib);
+				else
+					goto nomatch;
+			}
+			if (value == NULL)
+				value = sysfs_attr_get_value(udev->dev->devpath, key_name);
+			if (value == NULL)
+				goto nomatch;
+			strlcpy(val, value, sizeof(val));
+
+			/* strip trailing whitespace of value, if not asked to match for it */
+			len = strlen(key_value);
+			if (len > 0 && !isspace(key_value[len-1])) {
+				len = strlen(val);
+				while (len > 0 && isspace(val[len-1]))
+					val[--len] = '\0';
+				dbg("removed %zi trailing whitespace chars from '%s'\n", strlen(val)-len, val);
+			}
+
+			if (match_key("ATTR", rule, &pair->key, val))
+				goto nomatch;
+		}
+	}
+
+	/* walk up the chain of parent devices and find a match */
+	udev->dev_parent = udev->dev;
+	while (1) {
+		/* check for matching kernel device name */
+		if (match_key("KERNELS", rule, &rule->kernels, udev->dev_parent->kernel))
+			goto try_parent;
+
+		/* check for matching subsystem value */
+		if (match_key("SUBSYSTEMS", rule, &rule->subsystems, udev->dev_parent->subsystem))
+			goto try_parent;
+
+		/* check for matching driver */
+		if (match_key("DRIVERS", rule, &rule->drivers, udev->dev_parent->driver))
+			goto try_parent;
+
+		/* check for matching sysfs attribute pairs */
+		for (i = 0; i < rule->attrs.count; i++) {
+			struct key_pair *pair = &rule->attrs.keys[i];
+
+			if (pair->key.operation == KEY_OP_MATCH ||
+			    pair->key.operation == KEY_OP_NOMATCH) {
+				const char *key_name = key_pair_name(rule, pair);
+				const char *key_value = key_val(rule, &pair->key);
+				const char *value;
+				char val[VALUE_SIZE];
+				size_t len;
+
+				value = sysfs_attr_get_value(udev->dev_parent->devpath, key_name);
+				if (value == NULL)
+					value = sysfs_attr_get_value(udev->dev->devpath, key_name);
+				if (value == NULL)
+					goto try_parent;
+				strlcpy(val, value, sizeof(val));
+
+				/* strip trailing whitespace of value, if not asked to match for it */
+				len = strlen(key_value);
+				if (len > 0 && !isspace(key_value[len-1])) {
+					len = strlen(val);
+					while (len > 0 && isspace(val[len-1]))
+						val[--len] = '\0';
+					dbg("removed %zi trailing whitespace chars from '%s'\n", strlen(val)-len, val);
+				}
+
+				if (match_key("ATTRS", rule, &pair->key, val))
+					goto try_parent;
+			}
+		}
+
+		/* found matching device  */
+		break;
+try_parent:
+		/* move to parent device */
+		dbg("try parent sysfs device\n");
+		udev->dev_parent = sysfs_device_get_parent(udev->dev_parent);
+		if (udev->dev_parent == NULL)
+			goto nomatch;
+		dbg("looking at dev_parent->devpath='%s'\n", udev->dev_parent->devpath);
+		dbg("looking at dev_parent->kernel='%s'\n", udev->dev_parent->kernel);
+	}
+
+	/* execute external program */
+	if (rule->program.operation != KEY_OP_UNSET) {
+		char program[PATH_SIZE];
+		char result[PATH_SIZE];
+
+		strlcpy(program, key_val(rule, &rule->program), sizeof(program));
+		udev_rules_apply_format(udev, program, sizeof(program));
+		if (run_program(program, udev->dev->subsystem, result, sizeof(result), NULL) != 0) {
+			dbg("PROGRAM is false\n");
+			udev->program_result[0] = '\0';
+			if (rule->program.operation != KEY_OP_NOMATCH)
+				goto nomatch;
+		} else {
+			int count;
+
+			dbg("PROGRAM matches\n");
+			remove_trailing_chars(result, '\n');
+			if (rule->string_escape == ESCAPE_UNSET ||
+			    rule->string_escape == ESCAPE_REPLACE) {
+				count = replace_chars(result, ALLOWED_CHARS_INPUT);
+				if (count > 0)
+					info("%i character(s) replaced\n" , count);
+			}
+			dbg("result is '%s'\n", result);
+			strlcpy(udev->program_result, result, sizeof(udev->program_result));
+			dbg("PROGRAM returned successful\n");
+			if (rule->program.operation == KEY_OP_NOMATCH)
+				goto nomatch;
+		}
+		dbg("PROGRAM key is true\n");
+	}
+
+	/* check for matching result of external program */
+	if (match_key("RESULT", rule, &rule->result, udev->program_result))
+		goto nomatch;
+
+	/* import variables returned from program or or file into environment */
+	if (rule->import.operation != KEY_OP_UNSET) {
+		char import[PATH_SIZE];
+		int rc = -1;
+
+		strlcpy(import, key_val(rule, &rule->import), sizeof(import));
+		udev_rules_apply_format(udev, import, sizeof(import));
+		dbg("check for IMPORT import='%s'\n", import);
+		if (rule->import_type == IMPORT_PROGRAM) {
+			rc = import_program_into_env(udev, import);
+		} else if (rule->import_type == IMPORT_FILE) {
+			dbg("import file import='%s'\n", import);
+			rc = import_file_into_env(udev, import);
+		} else if (rule->import_type == IMPORT_PARENT) {
+			dbg("import parent import='%s'\n", import);
+			rc = import_parent_into_env(udev, import);
+		}
+		if (rc != 0) {
+			dbg("IMPORT failed\n");
+			if (rule->import.operation != KEY_OP_NOMATCH)
+				goto nomatch;
+		} else
+			dbg("IMPORT '%s' imported\n", key_val(rule, &rule->import));
+		dbg("IMPORT key is true\n");
+	}
+
+	/* rule matches, if we have ENV assignments export it */
+	for (i = 0; i < rule->env.count; i++) {
+		struct key_pair *pair = &rule->env.keys[i];
+
+		if (pair->key.operation == KEY_OP_ASSIGN) {
+			char temp_value[NAME_SIZE];
+			const char *key_name = key_pair_name(rule, pair);
+			const char *value = key_val(rule, &pair->key);
+
+			/* make sure we don't write to the same string we possibly read from */
+			strlcpy(temp_value, value, sizeof(temp_value));
+			udev_rules_apply_format(udev, temp_value, NAME_SIZE);
+
+			if (temp_value[0] == '\0') {
+				name_list_key_remove(&udev->env_list, key_name);
+				unsetenv(key_name);
+				info("unset ENV '%s'\n", key_name);
+			} else {
+				struct name_entry *entry;
+
+				entry = name_list_key_add(&udev->env_list, key_name, temp_value);
+				if (entry == NULL)
+					break;
+				putenv(entry->name);
+				info("set ENV '%s'\n", entry->name);
+			}
+		}
+	}
+
+	/* if we have ATTR assignments, write value to sysfs file */
+	for (i = 0; i < rule->attr.count; i++) {
+		struct key_pair *pair = &rule->attr.keys[i];
+
+		if (pair->key.operation == KEY_OP_ASSIGN) {
+			const char *key_name = key_pair_name(rule, pair);
+			char devpath[PATH_SIZE];
+			char *attrib;
+			char attr[PATH_SIZE] = "";
+			char value[NAME_SIZE];
+			FILE *f;
+
+			if (attr_get_by_subsys_id(key_name, devpath, sizeof(devpath), &attrib)) {
+				if (attrib != NULL) {
+					strlcpy(attr, sysfs_path, sizeof(attr));
+					strlcat(attr, devpath, sizeof(attr));
+					strlcat(attr, "/", sizeof(attr));
+					strlcat(attr, attrib, sizeof(attr));
+				}
+			}
+
+			if (attr[0] == '\0') {
+				strlcpy(attr, sysfs_path, sizeof(attr));
+				strlcat(attr, udev->dev->devpath, sizeof(attr));
+				strlcat(attr, "/", sizeof(attr));
+				strlcat(attr, key_name, sizeof(attr));
+			}
+
+			attr_subst_subdir(attr, sizeof(attr));
+
+			strlcpy(value, key_val(rule, &pair->key), sizeof(value));
+			udev_rules_apply_format(udev, value, sizeof(value));
+			info("writing '%s' to sysfs file '%s'\n", value, attr);
+			f = fopen(attr, "w");
+			if (f != NULL) {
+				if (!udev->test_run)
+					if (fprintf(f, "%s", value) <= 0)
+						err("error writing ATTR{%s}: %s\n", attr, strerror(errno));
+				fclose(f);
+			} else
+				err("error opening ATTR{%s} for writing: %s\n", attr, strerror(errno));
+		}
+	}
+	return 0;
+
+nomatch:
+	return -1;
+}
+
+int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
+{
+	struct udev_rule *rule;
+	int name_set = 0;
+
+	dbg("udev->dev->devpath='%s'\n", udev->dev->devpath);
+	dbg("udev->dev->kernel='%s'\n", udev->dev->kernel);
+
+	/* look for a matching rule to apply */
+	udev_rules_iter_init(rules);
+	while (1) {
+		rule = udev_rules_iter_next(rules);
+		if (rule == NULL)
+			break;
+
+		if (name_set &&
+		    (rule->name.operation == KEY_OP_ASSIGN ||
+		     rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+		     rule->name.operation == KEY_OP_ADD)) {
+			dbg("node name already set, rule ignored\n");
+			continue;
+		}
+
+		dbg("process rule\n");
+		if (match_rule(udev, rule) == 0) {
+			/* apply options */
+			if (rule->ignore_device) {
+				info("rule applied, '%s' is ignored\n", udev->dev->kernel);
+				udev->ignore_device = 1;
+				return 0;
+			}
+			if (rule->ignore_remove) {
+				udev->ignore_remove = 1;
+				dbg("remove event should be ignored\n");
+			}
+			if (rule->link_priority != 0) {
+				udev->link_priority = rule->link_priority;
+				info("link_priority=%i\n", udev->link_priority);
+			}
+			if (rule->event_timeout >= 0) {
+				udev->event_timeout = rule->event_timeout;
+				info("event_timeout=%i\n", udev->event_timeout);
+			}
+			/* apply all_partitions option only at a main block device */
+			if (rule->partitions &&
+			    strcmp(udev->dev->subsystem, "block") == 0 && udev->dev->kernel_number[0] == '\0') {
+				udev->partitions = rule->partitions;
+				dbg("creation of partition nodes requested\n");
+			}
+
+			/* apply permissions */
+			if (!udev->mode_final && rule->mode.operation != KEY_OP_UNSET) {
+				if (rule->mode.operation == KEY_OP_ASSIGN_FINAL)
+					udev->mode_final = 1;
+				char buf[20];
+				strlcpy(buf, key_val(rule, &rule->mode), sizeof(buf));
+				udev_rules_apply_format(udev, buf, sizeof(buf));
+				udev->mode = strtol(buf, NULL, 8);
+				dbg("applied mode=%#o to '%s'\n", udev->mode, udev->dev->kernel);
+			}
+			if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
+				if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
+					udev->owner_final = 1;
+				strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
+				udev_rules_apply_format(udev, udev->owner, sizeof(udev->owner));
+				dbg("applied owner='%s' to '%s'\n", udev->owner, udev->dev->kernel);
+			}
+			if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
+				if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
+					udev->group_final = 1;
+				strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
+				udev_rules_apply_format(udev, udev->group, sizeof(udev->group));
+				dbg("applied group='%s' to '%s'\n", udev->group, udev->dev->kernel);
+			}
+
+			/* collect symlinks */
+			if (!udev->symlink_final &&
+			    (rule->symlink.operation == KEY_OP_ASSIGN ||
+			     rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+			     rule->symlink.operation == KEY_OP_ADD)) {
+				char temp[PATH_SIZE];
+				char *pos, *next;
+				int count;
+
+				if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
+					udev->symlink_final = 1;
+				if (rule->symlink.operation == KEY_OP_ASSIGN ||
+				    rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
+					info("reset symlink list\n");
+					name_list_cleanup(&udev->symlink_list);
+				}
+				/* allow  multiple symlinks separated by spaces */
+				strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
+				udev_rules_apply_format(udev, temp, sizeof(temp));
+				if (rule->string_escape == ESCAPE_UNSET ||
+				    rule->string_escape == ESCAPE_REPLACE) {
+					count = replace_chars(temp, ALLOWED_CHARS_FILE " ");
+					if (count > 0)
+						info("%i character(s) replaced\n" , count);
+				}
+				dbg("rule applied, added symlink(s) '%s'\n", temp);
+				pos = temp;
+				while (isspace(pos[0]))
+					pos++;
+				next = strchr(pos, ' ');
+				while (next) {
+					next[0] = '\0';
+					info("add symlink '%s'\n", pos);
+					name_list_add(&udev->symlink_list, pos, 0);
+					while (isspace(next[1]))
+						next++;
+					pos = &next[1];
+					next = strchr(pos, ' ');
+				}
+				if (pos[0] != '\0') {
+					info("add symlink '%s'\n", pos);
+					name_list_add(&udev->symlink_list, pos, 0);
+				}
+			}
+
+			/* set name, later rules with name set will be ignored */
+			if (rule->name.operation == KEY_OP_ASSIGN ||
+			    rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+			    rule->name.operation == KEY_OP_ADD) {
+				int count;
+
+				name_set = 1;
+				strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
+				udev_rules_apply_format(udev, udev->name, sizeof(udev->name));
+				if (rule->string_escape == ESCAPE_UNSET ||
+				    rule->string_escape == ESCAPE_REPLACE) {
+					count = replace_chars(udev->name, ALLOWED_CHARS_FILE);
+					if (count > 0)
+						info("%i character(s) replaced\n", count);
+				}
+
+				info("rule applied, '%s' becomes '%s'\n", udev->dev->kernel, udev->name);
+				if (strcmp(udev->dev->subsystem, "net") != 0)
+					dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i\n",
+					    udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
+			}
+
+			if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
+				struct name_entry *entry;
+
+				if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
+					udev->run_final = 1;
+				if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
+					info("reset run list\n");
+					name_list_cleanup(&udev->run_list);
+				}
+				dbg("add run '%s'\n", key_val(rule, &rule->run));
+				entry = name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
+				if (rule->run_ignore_error)
+					entry->ignore_error = 1;
+			}
+
+			if (rule->last_rule) {
+				dbg("last rule to be applied\n");
+				break;
+			}
+
+			if (rule->goto_label.operation != KEY_OP_UNSET) {
+				dbg("moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
+				udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
+			}
+		}
+	}
+
+	if (!name_set) {
+		info("no node name set, will use kernel name '%s'\n", udev->dev->kernel);
+		strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
+	}
+
+	if (udev->tmp_node[0] != '\0') {
+		dbg("removing temporary device node\n");
+		unlink_secure(udev->tmp_node);
+		udev->tmp_node[0] = '\0';
+	}
+
+	return 0;
+}
+
+int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
+{
+	struct udev_rule *rule;
+
+	dbg("udev->kernel='%s'\n", udev->dev->kernel);
+
+	/* look for a matching rule to apply */
+	udev_rules_iter_init(rules);
+	while (1) {
+		rule = udev_rules_iter_next(rules);
+		if (rule == NULL)
+			break;
+
+		dbg("process rule\n");
+		if (rule->name.operation == KEY_OP_ASSIGN ||
+		    rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+		    rule->name.operation == KEY_OP_ADD ||
+		    rule->symlink.operation == KEY_OP_ASSIGN ||
+		    rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+		    rule->symlink.operation == KEY_OP_ADD ||
+		    rule->mode.operation != KEY_OP_UNSET ||
+		    rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
+			dbg("skip rule that names a device\n");
+			continue;
+		}
+
+		if (match_rule(udev, rule) == 0) {
+			if (rule->ignore_device) {
+				info("rule applied, '%s' is ignored\n", udev->dev->kernel);
+				udev->ignore_device = 1;
+				return 0;
+			}
+			if (rule->ignore_remove) {
+				udev->ignore_remove = 1;
+				dbg("remove event should be ignored\n");
+			}
+
+			if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
+				struct name_entry *entry;
+
+				if (rule->run.operation == KEY_OP_ASSIGN ||
+				    rule->run.operation == KEY_OP_ASSIGN_FINAL) {
+					info("reset run list\n");
+					name_list_cleanup(&udev->run_list);
+				}
+				dbg("add run '%s'\n", key_val(rule, &rule->run));
+				entry = name_list_add(&udev->run_list, key_val(rule, &rule->run), 0);
+				if (rule->run_ignore_error)
+					entry->ignore_error = 1;
+				if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
+					break;
+			}
+
+			if (rule->last_rule) {
+				dbg("last rule to be applied\n");
+				break;
+			}
+
+			if (rule->goto_label.operation != KEY_OP_UNSET) {
+				dbg("moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
+				udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
+			}
+		}
+	}
+
+	return 0;
+}