X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev.c;h=21815b694a2a524bc49b0effaeb3682ec048b604;hp=70236caca2b1f658896aef7ba1208fc09621b425;hb=f7b4eca455c7dbf850d984892756f22dbd9ddc3d;hpb=120d45d0a1565a1e4432616df3117ff474c0b249

diff --git a/namedev.c b/namedev.c
index 70236caca..21815b694 100644
--- a/namedev.c
+++ b/namedev.c
@@ -22,7 +22,7 @@
  */
 
 /* define this to enable parsing debugging */
-#define DEBUG_PARSER 
+/* #define DEBUG_PARSER */
 
 #include <stddef.h>
 #include <stdlib.h>
@@ -39,56 +39,70 @@
 #include "udev_version.h"
 #include "namedev.h"
 #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);
+}
+
 static void dump_dev(struct config_device *dev)
 {
 	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);
+		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);
+		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);
+		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);
+		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);
+		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);
 		break;
 	case CALLOUT:
-		dbg_parse("CALLOUT name = '%s', program ='%s', bus = '%s', id = '%s'"
-			" owner = '%s', group = '%s', mode = '%#o'",
-			dev->name, dev->exec_program, dev->bus, dev->id,
-			dev->owner, dev->group, dev->mode);
+		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);
 		break;
 	default:
-		dbg_parse("Unknown type of device!");
+		dbg_parse("unknown type of method");
 	}
 }
 
@@ -105,27 +119,25 @@ static int add_dev(struct config_device *new_dev)
 	struct list_head *tmp;
 	struct config_device *tmp_dev;
 
-	/* loop through the whole list of devices to see if we already have
-	 * this one... */
+	/* 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(dev->name, new_dev->name) == 0) {
-			/* the same, copy the new info into this structure */
-			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, owner);
-			copy_string(dev, new_dev, group);
-			return 0;
-		}
+		if (strncmp_wildcard(dev->name, new_dev->name, sizeof(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, owner);
+		copy_string(dev, new_dev, group);
+		return 0;
 	}
 
-	/* not found, lets create a new structure, and add it to the list */
+	/* not found, add new structure to the device list */
 	tmp_dev = malloc(sizeof(*tmp_dev));
 	if (!tmp_dev)
 		return -ENOMEM;
@@ -144,37 +156,15 @@ static void dump_dev_list(void)
 		dump_dev(dev);
 	}
 }
-
-static int get_value(const char *left, char **orig_string, char **ret_string)
-{
-	char *temp;
-	char *string = *orig_string;
-
-	/* eat any whitespace */
-	while (isspace(*string))
-		++string;
-
-	/* split based on '=' */
-	temp = strsep(&string, "=");
-	if (strcasecmp(temp, left) == 0) {
-		/* got it, now strip off the '"' */
-		while (isspace(*string))
-			++string;
-		if (*string == '"')
-			++string;
-		temp = strsep(&string, "\"");
-		*ret_string = temp;
-		*orig_string = string;
-		return 0;
-	}
-	return -ENODEV;
-}
 	
 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;
@@ -182,22 +172,43 @@ static int get_pair(char **orig_string, char **left, char **right)
 	/* 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;
@@ -205,27 +216,29 @@ static int namedev_init_config(void)
 	int retval = 0;
 	struct config_device dev;
 
-	dbg("opening %s to read as config", udev_config_filename);
+	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);
+		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)
-			break;
+			goto exit;
+		lineno++;
 
-		dbg_parse("read %s", temp);
+		dbg_parse("read '%s'", temp);
 
 		/* eat the whitespace at the beginning of the line */
 		while (isspace(*temp))
 			++temp;
 
-		/* no more line? */
+		/* empty line? */
 		if (*temp == 0x00)
 			continue;
 
@@ -244,28 +257,28 @@ static int namedev_init_config(void)
 			/* BUS="bus" */
 			retval = get_value("BUS", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.bus, temp3);
+				break;
+			strfieldcpy(dev.bus, temp3);
 
 			/* file="value" */
 			temp2 = strsep(&temp, ",");
 			retval = get_pair(&temp, &temp2, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.sysfs_file, temp2);
-			strcpy(dev.sysfs_value, temp3);
+				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)
-				continue;
-			strcpy(dev.name, temp3);
+				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);
+			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) {
@@ -275,25 +288,25 @@ static int namedev_init_config(void)
 			/* BUS="bus" */
 			retval = get_value("BUS", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.bus, temp3);
+				break;
+			strfieldcpy(dev.bus, temp3);
 
 			/* ID="id" */
 			temp2 = strsep(&temp, ",");
-			retval = get_value("id", &temp, &temp3);
+			retval = get_value("ID", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.id, temp3);
+				break;
+			strfieldcpy(dev.id, temp3);
 
 			/* NAME="new_name" */
 			temp2 = strsep(&temp, ",");
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.name, temp3);
+				break;
+			strfieldcpy(dev.name, temp3);
 
-			dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'",
-					dev.name, dev.bus, dev.id);
+			dbg_parse("NUMBER name='%s', bus='%s', id='%s'",
+				  dev.name, dev.bus, dev.id);
 		}
 
 		if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
@@ -303,25 +316,25 @@ static int namedev_init_config(void)
 			/* BUS="bus" */
 			retval = get_value("BUS", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.bus, temp3);
+				break;
+			strfieldcpy(dev.bus, temp3);
 
 			/* PLACE="place" */
 			temp2 = strsep(&temp, ",");
-			retval = get_value("place", &temp, &temp3);
+			retval = get_value("PLACE", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.place, temp3);
+				break;
+			strfieldcpy(dev.place, temp3);
 
 			/* NAME="new_name" */
 			temp2 = strsep(&temp, ",");
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.name, temp3);
+				break;
+			strfieldcpy(dev.name, temp3);
 
-			dbg_parse("TOPOLOGY name = '%s', bus = '%s', place = '%s'",
-					dev.name, dev.bus, dev.place);
+			dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s'",
+				  dev.name, dev.bus, dev.place);
 		}
 
 		if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
@@ -331,50 +344,50 @@ static int namedev_init_config(void)
 			/* KERNEL="kernel_name" */
 			retval = get_value("KERNEL", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.kernel_name, temp3);
+				break;
+			strfieldcpy(dev.kernel_name, temp3);
 
 			/* NAME="new_name" */
 			temp2 = strsep(&temp, ",");
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.name, temp3);
-			dbg_parse("REPLACE name = %s, kernel_name = %s",
-					dev.name, dev.kernel_name);
+				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;
 
-			/* PROGRAM="executable" */
-			retval = get_value("PROGRAM", &temp, &temp3);
+			/* BUS="bus" */
+			retval = get_value("BUS", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.exec_program, temp3);
+				break;
+			strfieldcpy(dev.bus, temp3);
 
-			/* BUS="bus" */
+			/* PROGRAM="executable" */
 			temp2 = strsep(&temp, ",");
-			retval = get_value("BUS", &temp, &temp3);
+			retval = get_value("PROGRAM", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.bus, temp3);
+				break;
+			strfieldcpy(dev.exec_program, temp3);
 
 			/* ID="id" */
 			temp2 = strsep(&temp, ",");
 			retval = get_value("ID", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.id, temp3);
+				break;
+			strfieldcpy(dev.id, temp3);
 
 			/* NAME="new_name" */
 			temp2 = strsep(&temp, ",");
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
-				continue;
-			strcpy(dev.name, temp3);
-			dbg_parse("CALLOUT name = %s, program = %s",
-					dev.name, dev.exec_program);
+				break;
+			strfieldcpy(dev.name, temp3);
+			dbg_parse("CALLOUT name='%s', program='%s'",
+				  dev.name, dev.exec_program);
 		}
 
 		retval = add_dev(&dev);
@@ -383,7 +396,8 @@ static int namedev_init_config(void)
 			goto exit;
 		}
 	}
-
+	dbg_parse("%s:%d:%Zd: error parsing '%s'", udev_config_filename,
+		  lineno, temp - line, temp);
 exit:
 	fclose(fd);
 	return retval;
@@ -399,27 +413,26 @@ static int namedev_init_permissions(void)
 	int retval = 0;
 	struct config_device dev;
 
-	dbg("opening %s to read as permissions config", udev_config_permission_filename);
+	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);
+		dbg("can't open '%s'", udev_config_permission_filename);
 		return -ENODEV;
 	}
 
 	/* loop through the whole file */
 	while (1) {
-		/* get a line */
 		temp = fgets(line, sizeof(line), fd);
 		if (temp == NULL)
 			break;
 
-		dbg_parse("read %s", temp);
+		dbg_parse("read '%s'", temp);
 
 		/* eat the whitespace at the beginning of the line */
 		while (isspace(*temp))
 			++temp;
 
-		/* no more line? */
+		/* empty line? */
 		if (*temp == 0x00)
 			continue;
 
@@ -431,19 +444,31 @@ static int namedev_init_permissions(void)
 
 		/* 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));
 
 		dev.mode = strtol(temp, NULL, 8);
 
-		dbg_parse("name = %s, owner = %s, group = %s, mode = %#o",
-				dev.name, dev.owner, dev.group,
-				dev.mode);
+		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);
@@ -462,6 +487,66 @@ static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 	return 0666;
 }
 
+static void build_kernel_number(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+	char *dig;
+
+	/* 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 void apply_format(struct udevice *udev, unsigned char *string)
+{
+	char name[NAME_SIZE];
+	char *pos;
+
+	while (1) {
+		pos = strchr(string, '%');
+
+		if (pos) {
+			strfieldcpy(name, pos+2);
+			*pos = 0x00;
+			switch (pos[1]) {
+			case 'b':
+				if (strlen(udev->bus_id) == 0)
+					break;
+				strcat(string, udev->bus_id);
+				dbg("substitute bus_id '%s'", udev->bus_id);
+				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 'm':
+				sprintf(pos, "%u", udev->minor);
+				dbg("substitute minor number '%u'", udev->minor);
+				break;
+			case 'M':
+				sprintf(pos, "%u", udev->major);
+				dbg("substitute major number '%u'", udev->major);
+				break;
+			case 'c':
+				if (strlen(udev->callout_value) == 0)
+					break;
+				strcat(pos, udev->callout_value);
+				dbg("substitute callout output '%s'", udev->callout_value);
+				break;
+			default:
+				dbg("unknown substitution type '%%%c'", pos[1]);
+				break;
+			}
+			strcat(string, name);
+		} else
+			break;
+	}
+}
+
 
 static int exec_callout(struct config_device *dev, char *value, int len)
 {
@@ -472,8 +557,11 @@ 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];
+	int i;
 
-	dbg("callout to %s\n", dev->exec_program);
+	dbg("callout to '%s'", dev->exec_program);
 	retval = pipe(fds);
 	if (retval != 0) {
 		dbg("pipe failed");
@@ -486,21 +574,32 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 	}
 
 	if (pid == 0) {
-		/*
-		 * child 
-		 */
+		/* child */
 		close(STDOUT_FILENO);
 		dup(fds[1]);	/* dup write side of pipe to STDOUT */
-		retval = execve(dev->exec_program, main_argv, main_envp);
+		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 (args[i] == NULL)
+					break;
+			}
+			if (args[i]) {
+				dbg("too many args - %d", i);
+				args[i] = NULL;
+			}
+			retval = execve(args[0], args, main_envp);
+		} else {
+			retval = execve(dev->exec_program, main_argv, main_envp);
+		}
 		if (retval != 0) {
 			dbg("child execve failed");
 			exit(1);
 		}
 		return -1; /* avoid compiler warning */
 	} else {
-		/*
-		 * Parent reads from fds[0].
-		 */
+		/* parent reads from fds[0] */
 		close(fds[1]);
 		retval = 0;
 		while (1) {
@@ -509,7 +608,7 @@ 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\n", len);
+				dbg("callout len %d too short", len);
 				retval = -1;
 			}
 			if (value_set) {
@@ -520,6 +619,7 @@ static int exec_callout(struct config_device *dev, char *value, int len)
 				strncpy(value, buffer, len);
 			}
 		}
+		dbg("callout returned '%s'", value);
 		close(fds[0]);
 		res = wait(&status);
 		if (res < 0) {
@@ -541,253 +641,307 @@ static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev
 {
 	struct config_device *dev;
 	struct list_head *tmp;
-	char value[ID_SIZE];
 
 	list_for_each(tmp, &config_device_list) {
 		dev = list_entry(tmp, struct config_device, node);
 		if (dev->type != CALLOUT)
 			continue;
 
-		if (exec_callout(dev, value, sizeof(value)))
+		/* 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 (strncmp(value, dev->id, sizeof(value)) != 0)
+		if (strncmp_wildcard(udev->callout_value, dev->id, NAME_SIZE) != 0)
 			continue;
-		strcpy(udev->name, dev->name);
+		strfieldcpy(udev->name, dev->name);
 		if (dev->mode != 0) {
 			udev->mode = dev->mode;
-			strcpy(udev->owner, dev->owner);
-			strcpy(udev->group, dev->group);
+			strfieldcpy(udev->owner, dev->owner);
+			strfieldcpy(udev->group, dev->group);
 		}
-		dbg_parse("device callout '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-			dev->id, udev->name, 
-			dev->owner, dev->group, dev->mode);
+		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);
 		return 0;
 	}
 	return -ENODEV;
 }
 
-static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
+	struct sysfs_attribute *tmpattr = NULL;
 	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)
+		if (dev->type != LABEL)
 			continue;
 
-		dbg_parse("REPLACE: replace name '%s' with '%s'",
-			  dev->kernel_name, dev->name);
-		if (strcmp(dev->kernel_name, class_dev->name) != 0)
+		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;
+		}
+
+		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)
 			continue;
 
-		strcpy(udev->name, dev->name);
+		strfieldcpy(udev->name, dev->name);
 		if (dev->mode != 0) {
 			udev->mode = dev->mode;
-			strcpy(udev->owner, dev->owner);
-			strcpy(udev->group, dev->group);
+			strfieldcpy(udev->owner, dev->owner);
+			strfieldcpy(udev->group, dev->group);
 		}
-		dbg_parse("'%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-			dev->kernel_name, udev->name, 
-			dev->owner, dev->group, dev->mode);
-		
+		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);
+
 		return 0;
 	}
 	return -ENODEV;
 }
 
-static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
+	struct config_device *dev;
 	struct list_head *tmp;
-	int retval = 0;
+	char path[SYSFS_PATH_MAX];
 	int found;
+	char *temp = NULL;
 
-	udev->mode = 0;
-	if (class_dev->sysdevice) {
-		dbg_parse("class_dev->sysdevice->path = '%s'", class_dev->sysdevice->path);
-		dbg_parse("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
-	} else {
-		dbg_parse("class_dev->name = '%s'", class_dev->name);
+	/* we have to have a sysfs device for NUMBER 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;
+
+		found = 0;
+		strfieldcpy(path, sysfs_device->path);
+		temp = strrchr(path, '/');
+		dbg_parse("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);
+			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);
+		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;
+	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 */
+	if (!sysfs_device)
+		return -ENODEV;
+
 	list_for_each(tmp, &config_device_list) {
-		struct config_device *dev = list_entry(tmp, struct config_device, node);
-		switch (dev->type) {
-		case LABEL:
-			{
-			struct sysfs_attribute *tmpattr = NULL;
-			struct sysfs_class_device *class_dev_parent = NULL;
-			char *temp = NULL;
-
-			dbg_parse("LABEL: match file '%s' with value '%s'",
-					dev->sysfs_file, dev->sysfs_value);
-			/* 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;
+		dev = list_entry(tmp, struct config_device, node);
+		if (dev->type != TOPOLOGY)
+			continue;
 
-			/* look in the class device directory if present */
-			if (class_dev->sysdevice) {
-				tmpattr = sysfs_get_device_attr(class_dev->sysdevice, dev->sysfs_file);
-				if (tmpattr)
-					goto label_found;
-			}
+		found = 0;
+		strfieldcpy(path, sysfs_device->path);
+		temp = strrchr(path, '/');
+		dbg_parse("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);
+			if (strstr(temp, dev->place) != NULL)
+				found = 1;
+		}
+		if (!found)
+			continue;
 
-			/* 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...");
-					strcpy(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);
-						continue;
-					}
-					dbg_parse("class_dev_parent->name = %s", class_dev_parent->name);
-
-					/* try to find the attribute in the class device directory */
-					tmpattr = sysfs_get_classdev_attr(class_dev_parent, dev->sysfs_file);
-					if (tmpattr) 
-						goto label_found;
-
-					/* look in the class device directory if present */
-					if (class_dev_parent->sysdevice) {
-						tmpattr = sysfs_get_device_attr(class_dev_parent->sysdevice, dev->sysfs_file);
-						if (tmpattr) 
-							goto label_found;
-					}
-					
-				}
-			}
-			if (class_dev_parent)
-				sysfs_close_class_device(class_dev_parent);
+		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);
+		return 0;
+	}
+	return -ENODEV;
+}
 
+static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+	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;
 
-label_found:
-			tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
-			dbg_parse("file '%s' found with value '%s' compare with '%s'", dev->sysfs_file, tmpattr->value, dev->sysfs_value);
-			if (strcmp(dev->sysfs_value, tmpattr->value) != 0) {
-				if (class_dev_parent) 
-					sysfs_close_class_device(class_dev_parent);
-				continue;
-			}
+		dbg_parse("compare name '%s' with '%s'",
+			  dev->kernel_name, dev->name);
+		if (strcmp(dev->kernel_name, class_dev->name) != 0)
+			continue;
 
-			strcpy(udev->name, dev->name);
+		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);
+		
+		return 0;
+	}
+	return -ENODEV;
+}
+
+static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+	struct config_device *dev;
+	struct list_head *tmp;
+	int len;
+
+	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 int get_attr(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;
+
+	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])) {
-				temp = &class_dev->path[strlen(class_dev->path)-1];
-				strcat(udev->name, temp);
-			}
-			if (dev->mode != 0) {
-				udev->mode = dev->mode;
-				strcpy(udev->owner, dev->owner);
-				strcpy(udev->group, dev->group);
-			}
-			dbg_parse("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-				dev->sysfs_file, dev->sysfs_value, udev->name, 
-				dev->owner, dev->group, dev->mode);
-			if (class_dev_parent)
-				sysfs_close_class_device(class_dev_parent);
-			goto done;
-			break;
-			}
-		case NUMBER:
-			{
-			char path[SYSFS_PATH_MAX];
-			char *temp;
-
-			found = 0;
-			if (!class_dev->sysdevice)
-				continue;
-			strcpy(path, class_dev->sysdevice->path);
-			temp = strrchr(path, '/');
-			dbg_parse("NUMBER path = '%s'", path);
-			dbg_parse("NUMBER temp = '%s' id = '%s'", temp, dev->id);
-			if (strstr(temp, dev->id) != NULL) {
-				found = 1;
-			} else {
-				*temp = 0x00;
+				char path[SYSFS_PATH_MAX];
+
+				dbg_parse("really is a partition");
+				strfieldcpy(path, class_dev->path);
 				temp = strrchr(path, '/');
-				dbg_parse("NUMBERY temp = '%s' id = '%s'", temp, dev->id);
-				if (strstr(temp, dev->id) != NULL)
-					found = 1;
-			}
-			if (!found)
-				continue;
-
-			strcpy(udev->name, dev->name);
-			if (dev->mode != 0) {
-				udev->mode = dev->mode;
-				strcpy(udev->owner, dev->owner);
-				strcpy(udev->group, dev->group);
-			}
-			dbg_parse("device id '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-				dev->id, udev->name, 
-				dev->owner, dev->group, dev->mode);
-			goto done;
-			break;
-			}
-		case TOPOLOGY:
-			{
-			char path[SYSFS_PATH_MAX];
-			char *temp;
-
-			if (!class_dev->sysdevice)
-				continue;
-			found = 0;	
-			strcpy(path, class_dev->sysdevice->path);
-			temp = strrchr(path, '/');
-			dbg_parse("TOPOLOGY path = '%s'", path);
-			dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
-			if (strstr(temp, dev->place) != NULL) {
-				found = 1;
-			} else {
 				*temp = 0x00;
-				temp = strrchr(path, '/');
-				dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
-				if (strstr(temp, dev->place) != NULL)
-					found = 1;
-			}
-			if (!found)
-				continue;
-
-			strcpy(udev->name, dev->name);
-			if (dev->mode != 0) {
-				udev->mode = dev->mode;
-				strcpy(udev->owner, dev->owner);
-				strcpy(udev->group, dev->group);
-			}
-			dbg_parse("device at '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-				dev->place, udev->name, 
-				dev->owner, dev->group, dev->mode);
-			goto done;
-			break;
+				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;
+				}
 			}
-		case KERNEL_NAME:
-		default:
-			break;
-		}	
+		}
+	}
+		
+	if (sysfs_device) {
+		dbg_parse("sysfs_device->path='%s'", sysfs_device->path);
+		dbg_parse("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+		strfieldcpy(udev->bus_id, sysfs_device->bus_id);
+	} else {
+		dbg_parse("class_dev->name = '%s'", class_dev->name);
 	}
 
-	/* rules are looked at in priority order */
+	build_kernel_number(class_dev, udev);
 
+	/* rules are looked at in priority order */
 	retval = do_callout(class_dev, udev);
 	if (retval == 0)
-		goto done;
+		goto found;
+
+	retval = do_label(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto found;
+
+	retval = do_number(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto found;
+
+	retval = do_topology(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto found;
 
 	retval = do_replace(class_dev, udev);
 	if (retval == 0)
-		goto done;
+		goto found;
 
-	strcpy(udev->name, class_dev->name);
+	do_kernelname(class_dev, udev);
+	goto done;
+
+found:
+	/* substitute placeholder in NAME  */
+	apply_format(udev, udev->name);
 
 done:
 	/* mode was never set above */
@@ -796,6 +950,10 @@ done:
 		udev->owner[0] = 0x00;
 		udev->group[0] = 0x00;
 	}
+
+	if (class_dev_parent)
+		sysfs_close_class_device(class_dev_parent);
+
 	return 0;
 }
 
@@ -825,5 +983,3 @@ int namedev_init(void)
 	dump_dev_list();
 	return retval;
 }
-
-