X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev.c;h=e39207e6a7c58dc63ef5a5c8a9ad9abfa1ea3a6b;hp=fbdb125e4c39ec28a941b46bbd9fa57f9ee47061;hb=74c73ef994f3ea8d013c33fe7be73e0c0c86977b;hpb=3d150dfb28efbaf0b25f154fb8955c47d606c3d5

diff --git a/namedev.c b/namedev.c
index fbdb125e4..e39207e6a 100644
--- a/namedev.c
+++ b/namedev.c
@@ -29,11 +29,14 @@
 #include <ctype.h>
 #include <unistd.h>
 #include <errno.h>
+#include <time.h>
 #include <sys/wait.h>
+#include <sys/stat.h>
 
 #include "list.h"
 #include "udev.h"
 #include "udev_version.h"
+#include "logging.h"
 #include "namedev.h"
 #include "libsysfs/libsysfs.h"
 #include "klibc_fixups.h"
@@ -101,48 +104,13 @@ static int strcmp_pattern(const char *p, const char *s)
 	if (strlen(b->var))		\
 		strcpy(a->var, b->var);
 
-int add_config_dev(struct config_device *new_dev)
-{
-	struct list_head *tmp;
-	struct config_device *tmp_dev;
-
-	/* update the values if we already have the device */
-	list_for_each(tmp, &config_device_list) {
-		struct config_device *dev = list_entry(tmp, struct config_device, node);
-		if (strcmp_pattern(new_dev->name, dev->name))
-			continue;
-		if (strncmp(dev->bus, new_dev->bus, sizeof(dev->name)))
-			continue;
-		copy_var(dev, new_dev, type);
-		copy_string(dev, new_dev, bus);
-		copy_string(dev, new_dev, sysfs_file);
-		copy_string(dev, new_dev, sysfs_value);
-		copy_string(dev, new_dev, id);
-		copy_string(dev, new_dev, place);
-		copy_string(dev, new_dev, kernel_name);
-		copy_string(dev, new_dev, exec_program);
-		copy_string(dev, new_dev, symlink);
-		return 0;
-	}
-
-	/* not found, add new structure to the device list */
-	tmp_dev = malloc(sizeof(*tmp_dev));
-	if (!tmp_dev)
-		return -ENOMEM;
-	memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
-	list_add_tail(&tmp_dev->node, &config_device_list);
-	//dump_config_dev(tmp_dev);
-	return 0;
-}
-
 int add_perm_dev(struct perm_device *new_dev)
 {
-	struct list_head *tmp;
+	struct perm_device *dev;
 	struct perm_device *tmp_dev;
 
 	/* update the values if we already have the device */
-	list_for_each(tmp, &perm_device_list) {
-		struct perm_device *dev = list_entry(tmp, struct perm_device, node);
+	list_for_each_entry(dev, &perm_device_list, node) {
 		if (strcmp_pattern(new_dev->name, dev->name))
 			continue;
 		copy_var(dev, new_dev, mode);
@@ -163,11 +131,9 @@ int add_perm_dev(struct perm_device *new_dev)
 
 static struct perm_device *find_perm(char *name)
 {
-	struct list_head *tmp;
-	struct perm_device *perm = NULL;
+	struct perm_device *perm;
 
-	list_for_each(tmp, &perm_device_list) {
-		perm = list_entry(tmp, struct perm_device, node);
+	list_for_each_entry(perm, &perm_device_list, node) {
 		if (strcmp_pattern(perm->name, name))
 			continue;
 		return perm;
@@ -185,51 +151,68 @@ static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 	return mode;
 }
 
-static void build_kernel_number(struct sysfs_class_device *class_dev, struct udevice *udev)
+static char * get_default_owner(void)
 {
-	char *dig;
+	if (strlen(default_owner_str) == 0) {
+		strncpy(default_owner_str, "root", OWNER_SIZE);
+	}
+	return default_owner_str;
+}
 
-	/* FIXME, figure out how to handle stuff like sdaj which will not work right now. */
-	dig = class_dev->name + strlen(class_dev->name);
-	while (isdigit(*(dig-1)))
-		dig--;
-	strfieldcpy(udev->kernel_number, dig);
-	dbg("kernel_number='%s'", udev->kernel_number);
+static char * get_default_group(void)
+{
+	if (strlen(default_group_str) == 0) {
+		strncpy(default_group_str, "root", GROUP_SIZE);
+	}
+	return default_group_str;
 }
 
 static void apply_format(struct udevice *udev, unsigned char *string)
 {
-	char name[NAME_SIZE];
+	char temp[NAME_SIZE];
+	char temp1[NAME_SIZE];
+	char *tail;
 	char *pos;
+	char *pos2;
+	char *pos3;
+	int num;
 
+	pos = string;
 	while (1) {
-		pos = strchr(string, '%');
+		num = 0;
+		pos = strchr(pos, '%');
 
 		if (pos) {
-			strfieldcpy(name, pos+2);
-			*pos = 0x00;
-			switch (pos[1]) {
+			pos[0] = '\0';
+			tail = pos+1;
+			if (isdigit(tail[0])) {
+				num = (int) strtoul(&pos[1], &tail, 10);
+				if (tail == NULL) {
+					dbg("format parsing error '%s'", pos+1);
+					break;
+				}
+			}
+			strfieldcpy(temp, tail+1);
+
+			switch (tail[0]) {
 			case 'b':
 				if (strlen(udev->bus_id) == 0)
 					break;
 				strcat(pos, udev->bus_id);
 				dbg("substitute bus_id '%s'", udev->bus_id);
 				break;
+			case 'k':
+				if (strlen(udev->kernel_name) == 0)
+					break;
+				strcat(pos, udev->kernel_name);
+				dbg("substitute kernel name '%s'", udev->kernel_name);
+				break;
 			case 'n':
 				if (strlen(udev->kernel_number) == 0)
 					break;
 				strcat(pos, udev->kernel_number);
 				dbg("substitute kernel number '%s'", udev->kernel_number);
 				break;
-			case 'D':
-				if (strlen(udev->kernel_number) == 0) {
-					strcat(pos, "disk");
-					break;
-				}
-				strcat(pos, "part");
-				strcat(pos, udev->kernel_number);
-				dbg("substitute kernel number '%s'", udev->kernel_number);
-				break;
 			case 'm':
 				sprintf(pos, "%u", udev->minor);
 				dbg("substitute minor number '%u'", udev->minor);
@@ -239,23 +222,97 @@ static void apply_format(struct udevice *udev, unsigned char *string)
 				dbg("substitute major number '%u'", udev->major);
 				break;
 			case 'c':
-				if (strlen(udev->callout_value) == 0)
+				if (strlen(udev->program_result) == 0)
 					break;
-				strcat(pos, udev->callout_value);
-				dbg("substitute callout output '%s'", udev->callout_value);
+				if (num) {
+					/* get part of return string */
+					strncpy(temp1, udev->program_result, sizeof(temp1));
+					pos2 = temp1;
+					while (num) {
+						num--;
+						pos3 = strsep(&pos2, " ");
+						if (pos3 == NULL) {
+							dbg("requested part of result string not found");
+							break;
+						}
+					}
+					if (pos3) {
+						strcat(pos, pos3);
+						dbg("substitute part of result string '%s'", pos3);
+					}
+				} else {
+					strcat(pos, udev->program_result);
+					dbg("substitute result string '%s'", udev->program_result);
+				}
+				break;
+			case '%':
+				strcat(pos, "%");
+				pos++;
 				break;
 			default:
 				dbg("unknown substitution type '%%%c'", pos[1]);
 				break;
 			}
-			strcat(string, name);
+			strcat(string, temp);
 		} else
 			break;
 	}
 }
 
+static struct bus_file {
+	char *bus;
+	char *file;
+} bus_files[] = {
+	{ .bus = "scsi",	.file = "vendor" },
+	{ .bus = "usb",		.file = "idVendor" },
+	{ .bus = "usb-serial",	.file = "detach_state" },
+	{ .bus = "ide",		.file = "detach_state" },
+	{ .bus = "pci",		.file = "vendor" },
+	{}
+};
+
+#define SECONDS_TO_WAIT_FOR_FILE	10
+static void wait_for_device_to_initialize(struct sysfs_device *sysfs_device)
+{
+	/* sleep until we see the file for this specific bus type show up this
+	 * is needed because we can easily out-run the kernel in looking for
+	 * these files before the paticular subsystem has created them in the
+	 * sysfs tree properly.
+	 *
+	 * And people thought that the /sbin/hotplug event system was going to
+	 * be slow, poo on you for arguing that before even testing it...
+	 */
+	struct bus_file *b = &bus_files[0];
+	struct sysfs_attribute *tmpattr;
+	int loop;
 
-static int exec_callout(struct config_device *dev, char *value, int len)
+	while (1) {
+		if (b->bus == NULL)
+			break;
+		if (strcmp(sysfs_device->bus, b->bus) == 0) {
+			tmpattr = NULL;
+			loop = SECONDS_TO_WAIT_FOR_FILE;
+			while (loop--) {
+				dbg("looking for file '%s' on bus '%s'", b->file, b->bus);
+				tmpattr = sysfs_get_device_attr(sysfs_device, b->file);
+				if (tmpattr) {
+					/* found it! */
+					goto exit;
+				}
+				/* sleep to give the kernel a chance to create the file */
+				sleep(1);
+			}
+			dbg("timed out waiting for '%s' file, continuing on anyway...", b->file);
+			goto exit;
+		}
+		b++;
+	}
+	dbg("did not find bus type '%s' on list of bus_id_files, contact greg@kroah.com", sysfs_device->bus);
+exit:
+	return; /* here to prevent compiler warning... */
+}
+
+static int execute_program(char *path, char *value, int len)
 {
 	int retval;
 	int res;
@@ -264,11 +321,11 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 	pid_t pid;
 	int value_set = 0;
 	char buffer[256];
-	char *arg;
-	char *args[CALLOUT_MAXARG];
+	char *pos;
+	char *args[PROGRAM_MAXARG];
 	int i;
 
-	dbg("callout to '%s'", dev->exec_program);
+	dbg("executing '%s'", path);
 	retval = pipe(fds);
 	if (retval != 0) {
 		dbg("pipe failed");
@@ -284,11 +341,11 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 		/* child */
 		close(STDOUT_FILENO);
 		dup(fds[1]);	/* dup write side of pipe to STDOUT */
-		if (strchr(dev->exec_program, ' ')) {
-			/* callout with arguments */
-			arg = dev->exec_program;
-			for (i=0; i < CALLOUT_MAXARG-1; i++) {
-				args[i] = strsep(&arg, " ");
+		if (strchr(path, ' ')) {
+			/* exec with arguments */
+			pos = path;
+			for (i=0; i < PROGRAM_MAXARG-1; i++) {
+				args[i] = strsep(&pos, " ");
 				if (args[i] == NULL)
 					break;
 			}
@@ -298,7 +355,7 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 			}
 			retval = execve(args[0], args, main_envp);
 		} else {
-			retval = execve(dev->exec_program, main_argv, main_envp);
+			retval = execve(path, main_argv, main_envp);
 		}
 		if (retval != 0) {
 			dbg("child execve failed");
@@ -315,18 +372,21 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 				break;
 			buffer[res] = '\0';
 			if (res > len) {
-				dbg("callout len %d too short", len);
+				dbg("result len %d too short", len);
 				retval = -1;
 			}
 			if (value_set) {
-				dbg("callout value already set");
+				dbg("result value already set");
 				retval = -1;
 			} else {
 				value_set = 1;
 				strncpy(value, buffer, len);
+				pos = value + strlen(value)-1;
+				if (pos[0] == '\n')
+				pos[0] = '\0';
+				dbg("result is '%s'", value);
 			}
 		}
-		dbg("callout returned '%s'", value);
 		close(fds[0]);
 		res = wait(&status);
 		if (res < 0) {
@@ -334,293 +394,332 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 			retval = -1;
 		}
 
-#ifndef __KLIBC__
 		if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
-			dbg("callout program status 0x%x", status);
+			dbg("exec program status 0x%x", status);
 			retval = -1;
 		}
-#endif
 	}
 	return retval;
 }
 
-static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
-{
-	struct config_device *dev;
-	struct list_head *tmp;
-
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		if (dev->type != CALLOUT)
-			continue;
-
-		if (sysfs_device) {
-			dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
-			if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
-				continue;
-		}
-
-		/* substitute anything that needs to be in the program name */
-		apply_format(udev, dev->exec_program);
-		if (exec_callout(dev, udev->callout_value, NAME_SIZE))
-			continue;
-		if (strcmp_pattern(dev->id, udev->callout_value) != 0)
-			continue;
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		dbg("callout returned matching value '%s', '%s' becomes '%s'",
-		    dev->id, class_dev->name, udev->name);
-		return 0;
-	}
-	return -ENODEV;
-}
-
-static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
 {
 	struct sysfs_attribute *tmpattr = NULL;
-	struct config_device *dev;
-	struct list_head *tmp;
 	char *c;
 
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		if (dev->type != LABEL)
-			continue;
+	if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
+		return -ENODEV;
 
-		if (sysfs_device) {
-			dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
-			if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
-				continue;
-		}
+	dbg("look for device attribute '%s'", pair->file);
+	/* try to find the attribute in the class device directory */
+	tmpattr = sysfs_get_classdev_attr(class_dev, pair->file);
+	if (tmpattr)
+		goto label_found;
 
-		dbg("look for device attribute '%s'", dev->sysfs_file);
-		/* try to find the attribute in the class device directory */
-		tmpattr = sysfs_get_classdev_attr(class_dev, dev->sysfs_file);
+	/* look in the class device directory if present */
+	if (sysfs_device) {
+		tmpattr = sysfs_get_device_attr(sysfs_device, pair->file);
 		if (tmpattr)
 			goto label_found;
-
-		/* look in the class device directory if present */
-		if (sysfs_device) {
-			tmpattr = sysfs_get_device_attr(sysfs_device, dev->sysfs_file);
-			if (tmpattr)
-				goto label_found;
-		}
-
-		continue;
+	}
+	return -ENODEV;
 
 label_found:
-		c = tmpattr->value + strlen(tmpattr->value)-1;
-		if (*c == '\n')
-			*c = 0x00;
-		dbg("compare attribute '%s' value '%s' with '%s'",
-			  dev->sysfs_file, tmpattr->value, dev->sysfs_value);
-		if (strcmp_pattern(dev->sysfs_value, tmpattr->value) != 0)
-			continue;
+	c = tmpattr->value + strlen(tmpattr->value)-1;
+	if (*c == '\n')
+		*c = 0x00;
+	dbg("compare attribute '%s' value '%s' with '%s'",
+		  pair->file, tmpattr->value, pair->value);
+	if (strcmp_pattern(pair->value, tmpattr->value) != 0)
+		return -ENODEV;
 
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		dbg("found matching attribute '%s', '%s' becomes '%s' ",
-		    dev->sysfs_file, class_dev->name, udev->name);
+	dbg("found matching attribute '%s' with value '%s'",
+	    pair->file, pair->value);
+	return 0;
+}
 
-		return 0;
+static int match_sysfs_pairs(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+	struct sysfs_pair *pair;
+	int i;
+
+	for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
+		pair = &dev->sysfs_pair[i];
+		if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
+			break;
+		if (compare_sysfs_attribute(class_dev, sysfs_device, pair) != 0) {
+			dbg("sysfs attribute doesn't match");
+			return -ENODEV;
+		}
 	}
-	return -ENODEV;
+
+	return 0;
 }
 
-static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static int match_id(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
 {
-	struct config_device *dev;
-	struct list_head *tmp;
 	char path[SYSFS_PATH_MAX];
 	int found;
 	char *temp = NULL;
 
-	/* we have to have a sysfs device for NUMBER to work */
+	/* we have to have a sysfs device for ID to work */
 	if (!sysfs_device)
 		return -ENODEV;
 
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		if (dev->type != NUMBER)
-			continue;
-
-		dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
-		if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
-			continue;
-
-		found = 0;
-		strfieldcpy(path, sysfs_device->path);
+	found = 0;
+	strfieldcpy(path, sysfs_device->path);
+	temp = strrchr(path, '/');
+	dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
+	if (strstr(temp, dev->id) != NULL) {
+		found = 1;
+	} else {
+		*temp = 0x00;
 		temp = strrchr(path, '/');
 		dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
-		if (strstr(temp, dev->id) != NULL) {
+		if (strstr(temp, dev->id) != NULL)
 			found = 1;
-		} else {
-			*temp = 0x00;
-			temp = strrchr(path, '/');
-			dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
-			if (strstr(temp, dev->id) != NULL)
-				found = 1;
-		}
-		if (!found)
-			continue;
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		dbg("found matching id '%s', '%s' becomes '%s'",
-		    dev->id, class_dev->name, udev->name);
-		return 0;
 	}
-	return -ENODEV;
+	if (!found) {
+		dbg("id doesn't match");
+		return -ENODEV;
+	}
+
+	return 0;
 }
 
-static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static int match_place(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
 {
-	struct config_device *dev;
-	struct list_head *tmp;
 	char path[SYSFS_PATH_MAX];
 	int found;
 	char *temp = NULL;
 
-	/* we have to have a sysfs device for TOPOLOGY to work */
+	/* we have to have a sysfs device for PLACE to work */
 	if (!sysfs_device)
 		return -ENODEV;
 
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		if (dev->type != TOPOLOGY)
-			continue;
-
-		dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
-		if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
-			continue;
-
-		found = 0;
-		strfieldcpy(path, sysfs_device->path);
+	found = 0;
+	strfieldcpy(path, sysfs_device->path);
+	temp = strrchr(path, '/');
+	dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
+	if (strstr(temp, dev->place) != NULL) {
+		found = 1;
+	} else {
+		*temp = 0x00;
 		temp = strrchr(path, '/');
 		dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
-		if (strstr(temp, dev->place) != NULL) {
+		if (strstr(temp, dev->place) != NULL)
 			found = 1;
-		} else {
-			*temp = 0x00;
-			temp = strrchr(path, '/');
-			dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
-			if (strstr(temp, dev->place) != NULL)
-				found = 1;
-		}
-		if (!found)
-			continue;
-
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		dbg("found matching place '%s', '%s' becomes '%s'",
-		    dev->place, class_dev->name, udev->name);
-		return 0;
 	}
-	return -ENODEV;
+	if (!found) {
+		dbg("place doesn't match");
+		return -ENODEV;
+	}
+
+	return 0;
 }
 
-static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static struct sysfs_device *get_sysfs_device(struct sysfs_class_device *class_dev)
 {
-	struct config_device *dev;
-	struct list_head *tmp;
-
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		if (dev->type != REPLACE)
-			continue;
-
-		dbg("compare name '%s' with '%s'", dev->kernel_name, class_dev->name);
-		if (strcmp_pattern(dev->kernel_name, class_dev->name) != 0)
-			continue;
-
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		dbg("found name, '%s' becomes '%s'", dev->kernel_name, udev->name);
+	struct sysfs_device *sysfs_device;
+	struct sysfs_class_device *class_dev_parent;
+	struct timespec tspec;
+	int loop;
+
+	/* Figure out where the device symlink is at.  For char devices this will
+	 * always be in the class_dev->path.  But for block devices, it's different.
+	 * The main block device will have the device symlink in it's path, but
+	 * all partitions have the symlink in its parent directory.
+	 * But we need to watch out for block devices that do not have parents, yet
+	 * look like a partition (fd0, loop0, etc.)  They all do not have a device
+	 * symlink yet.  We do sit and spin on waiting for them right now, we should
+	 * possibly have a whitelist for these devices here...
+	 */
+	class_dev_parent = sysfs_get_classdev_parent(class_dev);
+	if (class_dev_parent) 
+		dbg("Really a partition");
+
+	tspec.tv_sec = 0;
+	tspec.tv_nsec = 10000000;  /* sleep 10 millisec */
+	loop = 10;
+	while (loop--) {
+		nanosleep(&tspec, NULL);
+		if (class_dev_parent)
+			sysfs_device = sysfs_get_classdev_device(class_dev_parent);
+		else
+			sysfs_device = sysfs_get_classdev_device(class_dev);
+
+		if (sysfs_device != NULL)
+			goto device_found;
+	}
+	dbg("timed out waiting for device symlink, continuing on anyway...");
+	
+device_found:
+        /* We have another issue with just the wait above - the sysfs part of
+	 * the kernel may not be quick enough to have created the link to the
+	 * device under the "bus" subsystem. Due to this, the sysfs_device->bus
+	 * will not contain the actual bus name :(
+	 *
+	 * Libsysfs now provides a new API sysfs_get_device_bus(), so use it
+	 * if needed
+	 */
+        if (sysfs_device) {
 		
-		return 0;
+		if (sysfs_device->bus[0] != '\0')
+			goto bus_found;
+		
+		loop = 10;
+		tspec.tv_nsec = 10000000;
+		while (loop--) {
+			nanosleep(&tspec, NULL);
+			sysfs_get_device_bus(sysfs_device);
+			
+			if (sysfs_device->bus[0] != '\0')
+				goto bus_found;
+		}
+		dbg("timed out waiting to find the device bus, continuing on anyway");
+		goto exit;
+bus_found:
+		dbg("device %s is registered with bus '%s'",
+				sysfs_device->name, sysfs_device->bus);
 	}
-	return -ENODEV;
-}
-
-static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
-{
-	/* heh, this is pretty simple... */
-	strfieldcpy(udev->name, class_dev->name);
+exit:
+	return sysfs_device;
 }
 
 int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
 {
 	struct sysfs_device *sysfs_device = NULL;
-	struct sysfs_class_device *class_dev_parent = NULL;
-	int retval = 0;
-	char *temp = NULL;
+	struct config_device *dev;
 	struct perm_device *perm;
+	char *pos;
 
 	udev->mode = 0;
 
-	/* find the sysfs_device for this class device */
-	/* Wouldn't it really be nice if libsysfs could do this for us? */
-	if (class_dev->sysdevice) {
-		sysfs_device = class_dev->sysdevice;
-	} else {
-		/* bah, let's go backwards up a level to see if the device is there,
-		 * as block partitions don't point to the physical device.  Need to fix that
-		 * up in the kernel...
-		 */
-		if (strstr(class_dev->path, "block")) {
-			dbg("looking at block device");
-			if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
-				char path[SYSFS_PATH_MAX];
-
-				dbg("really is a partition");
-				strfieldcpy(path, class_dev->path);
-				temp = strrchr(path, '/');
-				*temp = 0x00;
-				dbg("looking for a class device at '%s'", path);
-				class_dev_parent = sysfs_open_class_device(path);
-				if (class_dev_parent == NULL) {
-					dbg("sysfs_open_class_device at '%s' failed", path);
-				} else {
-					dbg("class_dev_parent->name='%s'", class_dev_parent->name);
-					if (class_dev_parent->sysdevice)
-						sysfs_device = class_dev_parent->sysdevice;
-				}
-			}
-		}
-	}
-
+	/* find the sysfs_device associated with this class device */
+	sysfs_device = get_sysfs_device(class_dev);
 	if (sysfs_device) {
 		dbg("sysfs_device->path='%s'", sysfs_device->path);
 		dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
 		dbg("sysfs_device->bus='%s'", sysfs_device->bus);
 		strfieldcpy(udev->bus_id, sysfs_device->bus_id);
+		wait_for_device_to_initialize(sysfs_device);
 	} else {
 		dbg("class_dev->name = '%s'", class_dev->name);
 	}
 
-	build_kernel_number(class_dev, udev);
+	strfieldcpy(udev->kernel_name, class_dev->name);
 
-	/* rules are looked at in priority order */
-	retval = do_callout(class_dev, udev, sysfs_device);
-	if (retval == 0)
-		goto found;
+	/* get kernel number */
+	pos = class_dev->name + strlen(class_dev->name);
+	while (isdigit(*(pos-1)))
+		pos--;
+	strfieldcpy(udev->kernel_number, pos);
+	dbg("kernel_number='%s'", udev->kernel_number);
 
-	retval = do_label(class_dev, udev, sysfs_device);
-	if (retval == 0)
-		goto found;
+	/* look for a matching rule to apply */
+	list_for_each_entry(dev, &config_device_list, node) {
+		dbg("process rule");
 
-	retval = do_number(class_dev, udev, sysfs_device);
-	if (retval == 0)
-		goto found;
+		/* check for matching bus value */
+		if (dev->bus[0] != '\0') {
+			if (sysfs_device == NULL) {
+				dbg("device has no bus");
+				continue;
+			}
+			dbg("check for " FIELD_BUS " dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+			if (strcmp_pattern(dev->bus, sysfs_device->bus) != 0) {
+				dbg(FIELD_BUS " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_BUS " matches");
+			}
+		}
 
-	retval = do_topology(class_dev, udev, sysfs_device);
-	if (retval == 0)
-		goto found;
+		/* check for matching kernel name*/
+		if (dev->kernel[0] != '\0') {
+			dbg("check for " FIELD_KERNEL " dev->kernel='%s' class_dev->name='%s'", dev->kernel, class_dev->name);
+			if (strcmp_pattern(dev->kernel, class_dev->name) != 0) {
+				dbg(FIELD_KERNEL " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_KERNEL " matches");
+			}
+		}
+
+		/* check for matching bus id */
+		if (dev->id[0] != '\0') {
+			dbg("check " FIELD_ID);
+			if (match_id(dev, class_dev, sysfs_device) != 0) {
+				dbg(FIELD_ID " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_ID " matches");
+			}
+		}
 
-	retval = do_replace(class_dev, udev, sysfs_device);
-	if (retval == 0)
+		/* check for matching place of device */
+		if (dev->place[0] != '\0') {
+			dbg("check " FIELD_PLACE);
+			if (match_place(dev, class_dev, sysfs_device) != 0) {
+				dbg(FIELD_PLACE " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_PLACE " matches");
+			}
+		}
+
+		/* check for matching sysfs pairs */
+		if (dev->sysfs_pair[0].file[0] != '\0') {
+			dbg("check " FIELD_SYSFS " pairs");
+			if (match_sysfs_pairs(dev, class_dev, sysfs_device) != 0) {
+				dbg(FIELD_SYSFS " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_SYSFS " matches");
+			}
+		}
+
+		/* execute external program */
+		if (dev->program[0] != '\0') {
+			dbg("check " FIELD_PROGRAM);
+			apply_format(udev, dev->program);
+			if (execute_program(dev->program, udev->program_result, NAME_SIZE) != 0) {
+				dbg(FIELD_PROGRAM " returned nozero");
+				continue;
+			} else {
+				dbg(FIELD_PROGRAM " returned successful");
+			}
+		}
+
+		/* check for matching result of external program */
+		if (dev->result[0] != '\0') {
+			dbg("check for " FIELD_RESULT
+			    " dev->result='%s', udev->program_result='%s'",
+			    dev->result, udev->program_result);
+			if (strcmp_pattern(dev->result, udev->program_result) != 0) {
+				dbg(FIELD_RESULT " is not matching");
+				continue;
+			} else {
+				dbg(FIELD_RESULT " matches");
+			}
+		}
+
+		/* check if we are instructed to ignore this device */
+		if (dev->name[0] == '\0') {
+			dbg("instructed to ignore this device");
+			return -1;
+		}
+
+		/* Yup, this rule belongs to us! */
+		info("configured rule in '%s' at line %i applied, '%s' becomes '%s'",
+		    udev_rules_filename, dev->config_line, udev->kernel_name, dev->name);
+		strfieldcpy(udev->name, dev->name);
+		strfieldcpy(udev->symlink, dev->symlink);
 		goto found;
+	}
 
-	do_kernelname(class_dev, udev);
+	/* no rule was found so we use the kernel name */
+	strfieldcpy(udev->name, class_dev->name);
 	goto done;
 
 found:
@@ -637,15 +736,12 @@ done:
 	} else {
 		/* no matching perms found :( */
 		udev->mode = get_default_mode(class_dev);
-		udev->owner[0] = 0x00;
-		udev->group[0] = 0x00;
+		strncpy(udev->owner, get_default_owner(), OWNER_SIZE);
+		strncpy(udev->group, get_default_group(), GROUP_SIZE);
 	}
 	dbg("name, '%s' is going to have owner='%s', group='%s', mode = %#o",
 	    udev->name, udev->owner, udev->group, udev->mode);
 
-	if (class_dev_parent)
-		sysfs_close_class_device(class_dev_parent);
-
 	return 0;
 }