X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev.c;h=cff338f1a719b635c06a33c765d2376f46869f4b;hp=d45a827083dd59f46d413a1b3a09732c26d9a976;hb=8ed89229bc8afed84ad6d587a6df29329bbbf440;hpb=137af0cc47a387b91f1216e7a888db54257d51e3

diff --git a/namedev.c b/namedev.c
index d45a82708..cff338f1a 100644
--- a/namedev.c
+++ b/namedev.c
@@ -21,9 +21,6 @@
  *
  */
 
-/* define this to enable parsing debugging */
-/* #define DEBUG_PARSER */
-
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
@@ -33,6 +30,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/wait.h>
+#include <sys/stat.h>
 
 #include "list.h"
 #include "udev.h"
@@ -41,69 +39,59 @@
 #include "libsysfs/libsysfs.h"
 #include "klibc_fixups.h"
 
-#define TYPE_LABEL	"LABEL"
-#define TYPE_NUMBER	"NUMBER"
-#define TYPE_TOPOLOGY	"TOPOLOGY"
-#define TYPE_REPLACE	"REPLACE"
-#define TYPE_CALLOUT	"CALLOUT"
-#define CALLOUT_MAXARG	8
-
-static LIST_HEAD(config_device_list);
-
-/* s2 may end with '*' to match everything */
-static int strncmp_wildcard(char *s1, char *s2, int max)
-{
-	int len = strlen(s2);
-	if (len > max)
-		len = max;
-	if (s2[len-1] == '*')
-		len--;
-	else
-		len = max;
-	return strncmp(s1, s2, len);
-}
+LIST_HEAD(config_device_list);
+LIST_HEAD(perm_device_list);
 
-static void dump_dev(struct config_device *dev)
+/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
+static int strcmp_pattern(const char *p, const char *s)
 {
-	switch (dev->type) {
-	case KERNEL_NAME:
-		dbg_parse("KERNEL name='%s' ,"
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->owner, dev->group, dev->mode);
-		break;
-	case LABEL:
-		dbg_parse("LABEL name='%s', bus='%s', sysfs_file='%s', sysfs_value='%s', "
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->bus, dev->sysfs_file, dev->sysfs_value,
-			  dev->owner, dev->group, dev->mode);
-		break;
-	case NUMBER:
-		dbg_parse("NUMBER name='%s', bus='%s', id='%s', "
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->bus, dev->id,
-			  dev->owner, dev->group, dev->mode);
-		break;
-	case TOPOLOGY:
-		dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s', "
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->bus, dev->place,
-			  dev->owner, dev->group, dev->mode);
-		break;
-	case REPLACE:
-		dbg_parse("REPLACE name=%s, kernel_name=%s, "
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->kernel_name,
-			  dev->owner, dev->group, dev->mode);
+	if (*s == '\0') {
+		while (*p == '*')
+			p++;
+		return (*p != '\0');
+	}
+	switch (*p) {
+	case '[':
+		{
+			int not = 0;
+			p++;
+			if (*p == '!') {
+				not = 1;
+				p++;
+			}
+			while (*p && (*p != ']')) {
+				int match = 0;
+				if (p[1] == '-') {
+					if ((*s >= *p) && (*s <= p[2]))
+						match = 1;
+					p += 3;
+				} else {
+					match = (*p == *s);
+					p++;
+				}
+				if (match ^ not) {
+					while (*p && (*p != ']'))
+						p++;
+					return strcmp_pattern(p+1, s+1);
+				}
+			}
+		}
 		break;
-	case CALLOUT:
-		dbg_parse("CALLOUT name='%s', bus='%s', program='%s', id='%s', "
-			  "owner='%s', group='%s', mode=%#o",
-			  dev->name, dev->bus, dev->exec_program, dev->id,
-			  dev->owner, dev->group, dev->mode);
+	case '*':
+		if (strcmp_pattern(p, s+1))
+			return strcmp_pattern(p+1, s);
+		return 0;
+	case '\0':
+		if (*s == '\0') {
+			return 0;
+		}
 		break;
 	default:
-		dbg_parse("unknown type of method");
+		if ((*p == *s) || (*p == '?'))
+			return strcmp_pattern(p+1, s+1);
+		break;
 	}
+	return 1;
 }
 
 #define copy_var(a, b, var)		\
@@ -114,416 +102,95 @@ static void dump_dev(struct config_device *dev)
 	if (strlen(b->var))		\
 		strcpy(a->var, b->var);
 
-static int add_dev(struct config_device *new_dev)
+int add_perm_dev(struct perm_device *new_dev)
 {
 	struct list_head *tmp;
-	struct config_device *tmp_dev;
+	struct perm_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 (strncmp_wildcard(dev->name, new_dev->name, sizeof(dev->name)))
-			continue;
-		if (strncmp(dev->bus, new_dev->bus, sizeof(dev->name)))
+	list_for_each(tmp, &perm_device_list) {
+		struct perm_device *dev = list_entry(tmp, struct perm_device, node);
+		if (strcmp_pattern(new_dev->name, dev->name))
 			continue;
-		copy_var(dev, new_dev, type);
 		copy_var(dev, new_dev, mode);
-		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, owner);
 		copy_string(dev, new_dev, group);
 		return 0;
 	}
 
-	/* not found, add new structure to the device list */
+	/* not found, add new structure to the perm list */
 	tmp_dev = malloc(sizeof(*tmp_dev));
 	if (!tmp_dev)
 		return -ENOMEM;
 	memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
-	list_add(&tmp_dev->node, &config_device_list);
-	//dump_dev(tmp_dev);
+	list_add_tail(&tmp_dev->node, &perm_device_list);
+	//dump_perm_dev(tmp_dev);
 	return 0;
 }
 
-static void dump_dev_list(void)
+static struct perm_device *find_perm(char *name)
 {
 	struct list_head *tmp;
+	struct perm_device *perm = NULL;
 
-	list_for_each(tmp, &config_device_list) {
-		struct config_device *dev = list_entry(tmp, struct config_device, node);
-		dump_dev(dev);
-	}
-}
-	
-static int get_pair(char **orig_string, char **left, char **right)
-{
-	char *temp;
-	char *string = *orig_string;
-
-	if (!string)
-		return -ENODEV;
-
-	/* eat any whitespace */
-	while (isspace(*string))
-		++string;
-
-	/* split based on '=' */
-	temp = strsep(&string, "=");
-	*left = temp;
-	if (!string)
-		return -ENODEV;
-
-	/* take the right side and strip off the '"' */
-	while (isspace(*string))
-		++string;
-	if (*string == '"')
-		++string;
-	else
-		return -ENODEV;
-
-	temp = strsep(&string, "\"");
-	if (!string || *temp == '\0')
-		return -ENODEV;
-	*right = temp;
-	*orig_string = string;
-	
-	return 0;
-}
-
-static int get_value(const char *left, char **orig_string, char **ret_string)
-{
-	int retval;
-	char *left_string;
-
-	retval = get_pair(orig_string, &left_string, ret_string);
-	if (retval)
-		return retval;
-	if (strcasecmp(left_string, left) != 0)
-		return -ENODEV;
-	return 0;
-}
-
-static int namedev_init_config(void)
-{
-	char line[255];
-	int lineno;
-	char *temp;
-	char *temp2;
-	char *temp3;
-	FILE *fd;
-	int retval = 0;
-	struct config_device dev;
-
-	dbg("opening '%s' to read as config", udev_config_filename);
-	fd = fopen(udev_config_filename, "r");
-	if (fd == NULL) {
-		dbg("can't open '%s'", udev_config_filename);
-		return -ENODEV;
-	}
-
-	/* loop through the whole file */
-	lineno = 0;
-	while (1) {
-		/* get a line */
-		temp = fgets(line, sizeof(line), fd);
-		if (temp == NULL)
-			goto exit;
-		lineno++;
-
-		dbg_parse("read '%s'", temp);
-
-		/* eat the whitespace at the beginning of the line */
-		while (isspace(*temp))
-			++temp;
-
-		/* empty line? */
-		if (*temp == 0x00)
-			continue;
-
-		/* see if this is a comment */
-		if (*temp == COMMENT_CHARACTER)
+	list_for_each(tmp, &perm_device_list) {
+		perm = list_entry(tmp, struct perm_device, node);
+		if (strcmp_pattern(perm->name, name))
 			continue;
-
-		memset(&dev, 0x00, sizeof(struct config_device));
-
-		/* parse the line */
-		temp2 = strsep(&temp, ",");
-		if (strcasecmp(temp2, TYPE_LABEL) == 0) {
-			/* label type */
-			dev.type = LABEL;
-
-			/* BUS="bus" */
-			retval = get_value("BUS", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.bus, temp3);
-
-			/* file="value" */
-			temp2 = strsep(&temp, ",");
-			retval = get_pair(&temp, &temp2, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.sysfs_file, temp2);
-			strfieldcpy(dev.sysfs_value, temp3);
-
-			/* NAME="new_name" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("NAME", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.name, temp3);
-
-			dbg_parse("LABEL name='%s', bus='%s', "
-				  "sysfs_file='%s', sysfs_value='%s'",
-				  dev.name, dev.bus, dev.sysfs_file,
-				  dev.sysfs_value);
-		}
-
-		if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
-			/* number type */
-			dev.type = NUMBER;
-
-			/* BUS="bus" */
-			retval = get_value("BUS", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.bus, temp3);
-
-			/* ID="id" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("ID", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.id, temp3);
-
-			/* NAME="new_name" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("NAME", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.name, temp3);
-
-			dbg_parse("NUMBER name='%s', bus='%s', id='%s'",
-				  dev.name, dev.bus, dev.id);
-		}
-
-		if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
-			/* number type */
-			dev.type = TOPOLOGY;
-
-			/* BUS="bus" */
-			retval = get_value("BUS", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.bus, temp3);
-
-			/* PLACE="place" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("PLACE", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.place, temp3);
-
-			/* NAME="new_name" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("NAME", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.name, temp3);
-
-			dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s'",
-				  dev.name, dev.bus, dev.place);
-		}
-
-		if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
-			/* number type */
-			dev.type = REPLACE;
-
-			/* KERNEL="kernel_name" */
-			retval = get_value("KERNEL", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.kernel_name, temp3);
-
-			/* NAME="new_name" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("NAME", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.name, temp3);
-			dbg_parse("REPLACE name='%s', kernel_name='%s'",
-				  dev.name, dev.kernel_name);
-		}
-		if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
-			/* number type */
-			dev.type = CALLOUT;
-
-			/* BUS="bus" */
-			retval = get_value("BUS", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.bus, temp3);
-
-			/* PROGRAM="executable" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("PROGRAM", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.exec_program, temp3);
-
-			/* ID="id" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("ID", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.id, temp3);
-
-			/* NAME="new_name" */
-			temp2 = strsep(&temp, ",");
-			retval = get_value("NAME", &temp, &temp3);
-			if (retval)
-				break;
-			strfieldcpy(dev.name, temp3);
-			dbg_parse("CALLOUT name='%s', program='%s'",
-				  dev.name, dev.exec_program);
-		}
-
-		retval = add_dev(&dev);
-		if (retval) {
-			dbg("add_dev returned with error %d", retval);
-			goto exit;
-		}
-	}
-	dbg_parse("%s:%d:%Zd: error parsing '%s'", udev_config_filename,
-		  lineno, temp - line, temp);
-exit:
-	fclose(fd);
-	return retval;
-}	
-
-
-static int namedev_init_permissions(void)
-{
-	char line[255];
-	char *temp;
-	char *temp2;
-	FILE *fd;
-	int retval = 0;
-	struct config_device dev;
-
-	dbg("opening '%s' to read as permissions config", udev_config_permission_filename);
-	fd = fopen(udev_config_permission_filename, "r");
-	if (fd == NULL) {
-		dbg("can't open '%s'", udev_config_permission_filename);
-		return -ENODEV;
+		return perm;
 	}
-
-	/* loop through the whole file */
-	while (1) {
-		temp = fgets(line, sizeof(line), fd);
-		if (temp == NULL)
-			break;
-
-		dbg_parse("read '%s'", temp);
-
-		/* eat the whitespace at the beginning of the line */
-		while (isspace(*temp))
-			++temp;
-
-		/* empty line? */
-		if (*temp == 0x00)
-			continue;
-
-		/* see if this is a comment */
-		if (*temp == COMMENT_CHARACTER)
-			continue;
-
-		memset(&dev, 0x00, sizeof(dev));
-
-		/* parse the line */
-		temp2 = strsep(&temp, ":");
-		if (!temp2) {
-			dbg("cannot parse line '%s'", line);
-			continue;
-		}
-		strncpy(dev.name, temp2, sizeof(dev.name));
-
-		temp2 = strsep(&temp, ":");
-		if (!temp2) {
-			dbg("cannot parse line '%s'", line);
-			continue;
-		}
-		strncpy(dev.owner, temp2, sizeof(dev.owner));
-
-		temp2 = strsep(&temp, ":");
-		if (!temp2) {
-			dbg("cannot parse line '%s'", line);
-			continue;
-		}
-		strncpy(dev.group, temp2, sizeof(dev.owner));
-
-		if (!temp) {
-			dbg("cannot parse line: %s", line);
-			continue;
-		}
-		dev.mode = strtol(temp, NULL, 8);
-
-		dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
-			  dev.name, dev.owner, dev.group,
-			  dev.mode);
-		retval = add_dev(&dev);
-		if (retval) {
-			dbg("add_dev returned with error %d", retval);
-			goto exit;
-		}
-	}
-
-exit:
-	fclose(fd);
-	return retval;
-}	
-
-static mode_t get_default_mode(struct sysfs_class_device *class_dev)
-{
-	/* just default everyone to rw for the world! */
-	return 0666;
+	return NULL;
 }
 
-static void build_kernel_number(struct sysfs_class_device *class_dev, struct udevice *udev)
+static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 {
-	char *dig;
+	mode_t mode = 0600;	/* default to owner rw only */
 
-	/* 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);
+	if (strlen(default_mode_str) != 0) {
+		mode = strtol(default_mode_str, NULL, 8);
+	}
+	return mode;
 }
 
 static void apply_format(struct udevice *udev, unsigned char *string)
 {
 	char name[NAME_SIZE];
+	char temp[NAME_SIZE];
+	char *tail;
 	char *pos;
+	char *pos2;
+	char *pos3;
+	int num;
 
 	while (1) {
+		num = 0;
 		pos = strchr(string, '%');
 
 		if (pos) {
-			strfieldcpy(name, pos+2);
-			*pos = 0x00;
-			switch (pos[1]) {
+			*pos = '\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(name, 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;
@@ -532,12 +199,13 @@ static void apply_format(struct udevice *udev, unsigned char *string)
 				break;
 			case 'D':
 				if (strlen(udev->kernel_number) == 0) {
-					strcat(pos, "disk");
+					strcat(pos, "disc");
+					dbg("substitute devfs disc");
 					break;
 				}
 				strcat(pos, "part");
 				strcat(pos, udev->kernel_number);
-				dbg("substitute kernel number '%s'", udev->kernel_number);
+				dbg("substitute devfs part '%s'", udev->kernel_number);
 				break;
 			case 'm':
 				sprintf(pos, "%u", udev->minor);
@@ -550,8 +218,26 @@ static void apply_format(struct udevice *udev, unsigned char *string)
 			case 'c':
 				if (strlen(udev->callout_value) == 0)
 					break;
-				strcat(pos, udev->callout_value);
-				dbg("substitute callout output '%s'", udev->callout_value);
+				if (num) {
+					/* get part of return string */
+					strncpy(temp, udev->callout_value, sizeof(temp));
+					pos2 = temp;
+					while (num) {
+						num--;
+						pos3 = strsep(&pos2, " ");
+						if (pos3 == NULL) {
+							dbg("requested part of callout string not found");
+							break;
+						}
+					}
+					if (pos3) {
+						strcat(pos, pos3);
+						dbg("substitute partial callout output '%s'", pos3);
+					}
+				} else {
+					strcat(pos, udev->callout_value);
+					dbg("substitute callout output '%s'", udev->callout_value);
+				}
 				break;
 			default:
 				dbg("unknown substitution type '%%%c'", pos[1]);
@@ -563,6 +249,57 @@ static void apply_format(struct udevice *udev, unsigned char *string)
 	}
 }
 
+static struct bus_file {
+	char *bus;
+	char *file;
+} bus_files[] = {
+	{ .bus = "scsi",	.file = "vendor" },
+	{ .bus = "usb",		.file = "idVendor" },
+	{ .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;
+
+	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 exec_callout(struct config_device *dev, char *value, int len)
 {
@@ -573,7 +310,7 @@ 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 *pos;
 	char *args[CALLOUT_MAXARG];
 	int i;
 
@@ -595,9 +332,9 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 		dup(fds[1]);	/* dup write side of pipe to STDOUT */
 		if (strchr(dev->exec_program, ' ')) {
 			/* callout with arguments */
-			arg = dev->exec_program;
+			pos = dev->exec_program;
 			for (i=0; i < CALLOUT_MAXARG-1; i++) {
-				args[i] = strsep(&arg, " ");
+				args[i] = strsep(&pos, " ");
 				if (args[i] == NULL)
 					break;
 			}
@@ -633,9 +370,12 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 			} else {
 				value_set = 1;
 				strncpy(value, buffer, len);
+				pos = value + strlen(value)-1;
+				if (pos[0] == '\n')
+				pos[0] = '\0';
+				dbg("callout returned '%s'", value);
 			}
 		}
-		dbg("callout returned '%s'", value);
 		close(fds[0]);
 		res = wait(&status);
 		if (res < 0) {
@@ -663,8 +403,11 @@ static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev
 		if (dev->type != CALLOUT)
 			continue;
 
-		if (sysfs_device) {
-			dbg_parse("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+		if (dev->bus[0] != '\0') {
+			/* as the user specified a bus, we must match it up */
+			if (!sysfs_device)
+				continue;
+			dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
 			if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
 				continue;
 		}
@@ -673,72 +416,94 @@ static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev
 		apply_format(udev, dev->exec_program);
 		if (exec_callout(dev, udev->callout_value, NAME_SIZE))
 			continue;
-		if (strncmp_wildcard(udev->callout_value, dev->id, NAME_SIZE) != 0)
+		if (strcmp_pattern(dev->id, udev->callout_value) != 0)
 			continue;
 		strfieldcpy(udev->name, dev->name);
-		if (dev->mode != 0) {
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
-		}
-		dbg_parse("callout returned matching value '%s', '%s' becomes '%s'"
-			  " - owner='%s', group='%s', mode=%#o",
-			  dev->id, class_dev->name, udev->name,
-			  dev->owner, dev->group, dev->mode);
+		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 match_pair(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
 {
 	struct sysfs_attribute *tmpattr = NULL;
+	char *c;
+
+	if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
+		return -ENODEV;
+
+	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;
+
+	/* 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;
+	}
+
+	return -ENODEV;
+
+label_found:
+	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;
+
+	dbg("found matching attribute '%s' with value '%s'",
+	    pair->file, pair->value);
+	return 0;
+}
+
+static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+{
+	struct sysfs_pair *pair;
 	struct config_device *dev;
 	struct list_head *tmp;
+	int i;
+	int match;
 
 	list_for_each(tmp, &config_device_list) {
 		dev = list_entry(tmp, struct config_device, node);
 		if (dev->type != LABEL)
 			continue;
 
-		if (sysfs_device) {
-			dbg_parse("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+		if (dev->bus[0] != '\0') {
+			/* as the user specified a bus, we must match it up */
+			if (!sysfs_device)
+				continue;
+			dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
 			if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
 				continue;
 		}
 
-		dbg_parse("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);
-		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;
+		match = 1;
+		for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
+			pair = &dev->sysfs_pair[i];
+			if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
+				break;
+			if (match_pair(class_dev, sysfs_device, pair) != 0) {
+				match = 0;
+				break;
+			}
 		}
-
-		continue;
-
-label_found:
-		tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
-		dbg_parse("compare attribute '%s' value '%s' with '%s'",
-			  dev->sysfs_file, tmpattr->value, dev->sysfs_value);
-		if (strcmp(dev->sysfs_value, tmpattr->value) != 0)
+		if (match == 0)
 			continue;
 
+		/* found match */
 		strfieldcpy(udev->name, dev->name);
-		if (dev->mode != 0) {
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
-		}
-		dbg_parse("found matching attribute '%s', '%s' becomes '%s' "
-			  "- owner='%s', group='%s', mode=%#o",
-			  dev->sysfs_file, class_dev->name, udev->name,
-			  dev->owner, dev->group, dev->mode);
+		strfieldcpy(udev->symlink, dev->symlink);
+		dbg("found matching attribute, '%s' becomes '%s' ",
+		    class_dev->name, udev->name);
 
 		return 0;
 	}
@@ -762,41 +527,34 @@ static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev,
 		if (dev->type != NUMBER)
 			continue;
 
-		dbg_parse("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+		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);
 		temp = strrchr(path, '/');
-		dbg_parse("search '%s' in '%s', path='%s'", dev->id, temp, 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_parse("search '%s' in '%s', path='%s'", dev->id, temp, 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);
-		if (dev->mode != 0) {
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
-		}
-		dbg_parse("found matching id '%s', '%s' becomes '%s'"
-			  " - owner='%s', group ='%s', mode=%#o",
-			  dev->id, class_dev->name, udev->name,
-			  dev->owner, dev->group, dev->mode);
+		strfieldcpy(udev->symlink, dev->symlink);
+		dbg("found matching id '%s', '%s' becomes '%s'",
+		    dev->id, class_dev->name, udev->name);
 		return 0;
 	}
 	return -ENODEV;
 }
 
-
 static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
 	struct config_device *dev;
@@ -814,20 +572,20 @@ static int do_topology(struct sysfs_class_device *class_dev, struct udevice *ude
 		if (dev->type != TOPOLOGY)
 			continue;
 
-		dbg_parse("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+		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);
 		temp = strrchr(path, '/');
-		dbg_parse("search '%s' in '%s', path='%s'", dev->place, temp, 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_parse("search '%s' in '%s', path='%s'", dev->place, temp, path);
+			dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
 			if (strstr(temp, dev->place) != NULL)
 				found = 1;
 		}
@@ -835,15 +593,9 @@ static int do_topology(struct sysfs_class_device *class_dev, struct udevice *ude
 			continue;
 
 		strfieldcpy(udev->name, dev->name);
-		if (dev->mode != 0) {
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
-		}
-		dbg_parse("found matching place '%s', '%s' becomes '%s'"
-			  " - owner='%s', group ='%s', mode=%#o",
-			  dev->place, class_dev->name, udev->name,
-			  dev->owner, dev->group, dev->mode);
+		strfieldcpy(udev->symlink, dev->symlink);
+		dbg("found matching place '%s', '%s' becomes '%s'",
+		    dev->place, class_dev->name, udev->name);
 		return 0;
 	}
 	return -ENODEV;
@@ -859,20 +611,13 @@ static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev
 		if (dev->type != REPLACE)
 			continue;
 
-		dbg_parse("compare name '%s' with '%s'",
-			  dev->kernel_name, dev->name);
-		if (strcmp(dev->kernel_name, class_dev->name) != 0)
+		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);
-		if (dev->mode != 0) {
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
-		}
-		dbg_parse("found name, '%s' becomes '%s' - owner='%s', group='%s', mode = %#o",
-			  dev->kernel_name, udev->name, 
-			  dev->owner, dev->group, dev->mode);
+		strfieldcpy(udev->symlink, dev->symlink);
+		dbg("found name, '%s' becomes '%s'", dev->kernel_name, udev->name);
 		
 		return 0;
 	}
@@ -881,76 +626,125 @@ static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev
 
 static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
 {
-	struct config_device *dev;
-	struct list_head *tmp;
-	int len;
-
+	/* heh, this is pretty simple... */
 	strfieldcpy(udev->name, class_dev->name);
-	/* look for permissions */
-	list_for_each(tmp, &config_device_list) {
-		dev = list_entry(tmp, struct config_device, node);
-		len = strlen(dev->name);
-		if (strncmp_wildcard(class_dev->name, dev->name, sizeof(dev->name)))
-			continue;
-		if (dev->mode != 0) {
-			dbg_parse("found permissions for '%s'", class_dev->name);
-			udev->mode = dev->mode;
-			strfieldcpy(udev->owner, dev->owner);
-			strfieldcpy(udev->group, dev->group);
+}
+
+static struct sysfs_device *get_sysfs_device(struct sysfs_class_device *class_dev)
+{
+	struct sysfs_device *sysfs_device;
+	struct sysfs_class_device *class_dev_parent;
+	int loop;
+	char filename[SYSFS_PATH_MAX + 6];
+	int retval;
+	char *temp;
+	int partition = 0;
+
+	/* 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...
+	 */
+	strcpy(filename, class_dev->path);
+	dbg("filename = %s", filename);
+	if (strcmp(class_dev->classname, SYSFS_BLOCK_NAME) == 0) {
+		if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
+			temp = strrchr(filename, '/');
+			if (temp) {
+				char *temp2 = strrchr(filename, '/');
+				partition = 1;
+				*temp = 0x00;
+				dbg("temp2 = %s", temp2);
+				if (temp2 && (strcmp(temp2, "/block") == 0)) {
+					/* oops, we have no parent block device, so go back to original directory */
+					strcpy(filename, class_dev->path);
+					partition = 0;
+				}
+			}
+		}
+	}
+	strcat(filename, "/device");
+
+	loop = 2;
+	while (loop--) {
+		struct stat buf;
+		dbg("looking for '%s'", filename);
+		retval = stat(filename, &buf);
+		if (!retval)
+			break;
+		/* sleep to give the kernel a chance to create the device file */
+		sleep(1);
+	}
+
+	loop = 1;	/* FIXME put a real value in here for when everything is fixed... */
+	while (loop--) {
+		/* find the sysfs_device for this class device */
+		/* Wouldn't it really be nice if libsysfs could do this for us? */
+		sysfs_device = sysfs_get_classdev_device(class_dev);
+		if (sysfs_device != NULL)
+			goto exit;
+
+		/* if it's a partition, we need to get the parent device */
+		if (partition) {
+			/* FIXME  HACK HACK HACK HACK
+			 * for some reason partitions need this extra sleep here, in order
+			 * to wait for the device properly.  Once the libsysfs code is
+			 * fixed properly, this sleep should go away, and we can just loop above.
+			 */
+			sleep(1);
+			dbg("really is a partition");
+			class_dev_parent = sysfs_get_classdev_parent(class_dev);
+			if (class_dev_parent == NULL) {
+				dbg("sysfs_get_classdev_parent for class device '%s' failed", class_dev->name);
+			} else {
+				dbg("class_dev_parent->name='%s'", class_dev_parent->name);
+				sysfs_device = sysfs_get_classdev_device(class_dev_parent);
+				if (sysfs_device != NULL)
+					goto exit;
+			}
 		}
+		/* sleep to give the kernel a chance to create the link */
+		/* FIXME remove comment...
+		sleep(1); */
 	}
+	dbg("Timed out waiting for device symlink, continuing on anyway...");
+exit:
+	return sysfs_device;
 }
 
-static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
+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 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_parse("looking at block device");
-			if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
-				char path[SYSFS_PATH_MAX];
-
-				dbg_parse("really is a partition");
-				strfieldcpy(path, class_dev->path);
-				temp = strrchr(path, '/');
-				*temp = 0x00;
-				dbg_parse("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_parse("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_parse("sysfs_device->path='%s'", sysfs_device->path);
-		dbg_parse("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
-		dbg_parse("sysfs_device->bus='%s'", sysfs_device->bus);
+		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_parse("class_dev->name = '%s'", class_dev->name);
+		dbg("class_dev->name = '%s'", class_dev->name);
 	}
 
-	build_kernel_number(class_dev, udev);
+	strfieldcpy(udev->kernel_name, class_dev->name);
+
+	/* 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);
 
 	/* rules are looked at in priority order */
 	retval = do_callout(class_dev, udev, sysfs_device);
@@ -977,39 +771,33 @@ static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
 	goto done;
 
 found:
-	/* substitute placeholder in NAME  */
+	/* substitute placeholder */
 	apply_format(udev, udev->name);
+	apply_format(udev, udev->symlink);
 
 done:
-	/* mode was never set above */
-	if (!udev->mode) {
+	perm = find_perm(udev->name);
+	if (perm) {
+		udev->mode = perm->mode;
+		strfieldcpy(udev->owner, perm->owner);
+		strfieldcpy(udev->group, perm->group);
+	} else {
+		/* no matching perms found :( */
 		udev->mode = get_default_mode(class_dev);
 		udev->owner[0] = 0x00;
 		udev->group[0] = 0x00;
 	}
-
-	if (class_dev_parent)
-		sysfs_close_class_device(class_dev_parent);
+	dbg("name, '%s' is going to have owner='%s', group='%s', mode = %#o",
+	    udev->name, udev->owner, udev->group, udev->mode);
 
 	return 0;
 }
 
-int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
-{
-	int retval;
-
-	retval = get_attr(class_dev, dev);
-	if (retval)
-		dbg("get_attr failed");
-
-	return retval;
-}
-
 int namedev_init(void)
 {
 	int retval;
-	
-	retval = namedev_init_config();
+
+	retval = namedev_init_rules();
 	if (retval)
 		return retval;
 
@@ -1017,6 +805,7 @@ int namedev_init(void)
 	if (retval)
 		return retval;
 
-	dump_dev_list();
+	dump_config_dev_list();
+	dump_perm_dev_list();
 	return retval;
 }