X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev.c;h=5970ef059053cff1fc6195123bacc753529b145f;hp=e1958b5d9f7ad8b8d23270e10179662d76d1fbea;hb=ae2859df40ef80d15dff39fadd470a8541bab857;hpb=c18d70b4474ef226f06e97bd50dd1c10c494b540

diff --git a/namedev.c b/namedev.c
index e1958b5d9..5970ef059 100644
--- a/namedev.c
+++ b/namedev.c
@@ -21,6 +21,9 @@
  *
  */
 
+/* define this to enable parsing debugging */
+#define DEBUG_PARSER 
+
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
@@ -29,6 +32,7 @@
 #include <ctype.h>
 #include <unistd.h>
 #include <errno.h>
+#include <sys/wait.h>
 
 #include "list.h"
 #include "udev.h"
@@ -40,6 +44,7 @@
 #define TYPE_NUMBER	"NUMBER"
 #define TYPE_TOPOLOGY	"TOPOLOGY"
 #define TYPE_REPLACE	"REPLACE"
+#define TYPE_CALLOUT	"CALLOUT"
 
 static LIST_HEAD(config_device_list);
 
@@ -47,37 +52,43 @@ static void dump_dev(struct config_device *dev)
 {
 	switch (dev->type) {
 	case KERNEL_NAME:
-		dbg("KERNEL name ='%s'"
+		dbg_parse("KERNEL name ='%s'"
 			" owner = '%s', group = '%s', mode = '%#o'",
-			dev->attr.name, 
-			dev->attr.owner, dev->attr.group, dev->attr.mode);
+			dev->name, 
+			dev->owner, dev->group, dev->mode);
 		break;
 	case LABEL:
-		dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
+		dbg_parse("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
 			" owner = '%s', group = '%s', mode = '%#o'",
-			dev->attr.name, dev->bus, dev->sysfs_file, dev->sysfs_value,
-			dev->attr.owner, dev->attr.group, dev->attr.mode);
+			dev->name, dev->bus, dev->sysfs_file, dev->sysfs_value,
+			dev->owner, dev->group, dev->mode);
 		break;
 	case NUMBER:
-		dbg("NUMBER name = '%s', bus = '%s', id = '%s'"
+		dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'"
 			" owner = '%s', group = '%s', mode = '%#o'",
-			dev->attr.name, dev->bus, dev->id,
-			dev->attr.owner, dev->attr.group, dev->attr.mode);
+			dev->name, dev->bus, dev->id,
+			dev->owner, dev->group, dev->mode);
 		break;
 	case TOPOLOGY:
-		dbg("TOPOLOGY name = '%s', bus = '%s', place = '%s'"
+		dbg_parse("TOPOLOGY name = '%s', bus = '%s', place = '%s'"
 			" owner = '%s', group = '%s', mode = '%#o'",
-			dev->attr.name, dev->bus, dev->place,
-			dev->attr.owner, dev->attr.group, dev->attr.mode);
+			dev->name, dev->bus, dev->place,
+			dev->owner, dev->group, dev->mode);
 		break;
 	case REPLACE:
-		dbg("REPLACE name = %s, kernel_name = %s"
+		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->attr.name, dev->kernel_name,
-			dev->attr.owner, dev->attr.group, dev->attr.mode);
+			dev->name, dev->exec_program, dev->bus, dev->id,
+			dev->owner, dev->group, dev->mode);
 		break;
 	default:
-		dbg("Unknown type of device!");
+		dbg_parse("Unknown type of device!");
 	}
 }
 
@@ -98,18 +109,18 @@ static int add_dev(struct config_device *new_dev)
 	 * this one... */
 	list_for_each(tmp, &config_device_list) {
 		struct config_device *dev = list_entry(tmp, struct config_device, node);
-		if (strcmp(dev->attr.name, new_dev->attr.name) == 0) {
+		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, attr.mode);
+			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, attr.owner);
-			copy_string(dev, new_dev, attr.group);
+			copy_string(dev, new_dev, owner);
+			copy_string(dev, new_dev, group);
 			return 0;
 		}
 	}
@@ -186,7 +197,6 @@ static int get_pair(char **orig_string, char **left, char **right)
 
 static int namedev_init_config(void)
 {
-	char filename[255];
 	char line[255];
 	char *temp;
 	char *temp2;
@@ -195,11 +205,10 @@ static int namedev_init_config(void)
 	int retval = 0;
 	struct config_device dev;
 
-	strcpy(filename, NAMEDEV_CONFIG_ROOT NAMEDEV_CONFIG_FILE);
-	dbg("opening %s to read as permissions config", filename);
-	fd = fopen(filename, "r");
+	dbg("opening %s to read as config", udev_config_filename);
+	fd = fopen(udev_config_filename, "r");
 	if (fd == NULL) {
-		dbg("Can't open %s", filename);
+		dbg("Can't open %s", udev_config_filename);
 		return -ENODEV;
 	}
 
@@ -210,7 +219,7 @@ static int namedev_init_config(void)
 		if (temp == NULL)
 			break;
 
-		dbg("read %s", temp);
+		dbg_parse("read %s", temp);
 
 		/* eat the whitespace at the beginning of the line */
 		while (isspace(*temp))
@@ -251,9 +260,12 @@ static int namedev_init_config(void)
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
 				continue;
-			strcpy(dev.attr.name, temp3);
+			strcpy(dev.name, temp3);
 
-			dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'", dev.attr.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) {
@@ -278,9 +290,10 @@ static int namedev_init_config(void)
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
 				continue;
-			strcpy(dev.attr.name, temp3);
+			strcpy(dev.name, temp3);
 
-			dbg("NUMBER name = '%s', bus = '%s', id = '%s'", dev.attr.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) {
@@ -305,9 +318,10 @@ static int namedev_init_config(void)
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
 				continue;
-			strcpy(dev.attr.name, temp3);
+			strcpy(dev.name, temp3);
 
-			dbg("TOPOLOGY name = '%s', bus = '%s', place = '%s'", dev.attr.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) {
@@ -325,8 +339,42 @@ static int namedev_init_config(void)
 			retval = get_value("NAME", &temp, &temp3);
 			if (retval)
 				continue;
-			strcpy(dev.attr.name, temp3);
-			dbg("REPLACE name = %s, kernel_name = %s", dev.attr.name, dev.kernel_name);
+			strcpy(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);
+			if (retval)
+				continue;
+			strcpy(dev.exec_program, temp3);
+
+			/* BUS="bus" */
+			temp2 = strsep(&temp, ",");
+			retval = get_value("BUS", &temp, &temp3);
+			if (retval)
+				continue;
+			strcpy(dev.bus, temp3);
+
+			/* ID="id" */
+			temp2 = strsep(&temp, ",");
+			retval = get_value("ID", &temp, &temp3);
+			if (retval)
+				continue;
+			strcpy(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);
 		}
 
 		retval = add_dev(&dev);
@@ -344,7 +392,6 @@ exit:
 
 static int namedev_init_permissions(void)
 {
-	char filename[255];
 	char line[255];
 	char *temp;
 	char *temp2;
@@ -352,11 +399,10 @@ static int namedev_init_permissions(void)
 	int retval = 0;
 	struct config_device dev;
 
-	strcpy(filename, NAMEDEV_CONFIG_ROOT NAMEDEV_CONFIG_PERMISSION_FILE);
-	dbg("opening %s to read as permissions config", filename);
-	fd = fopen(filename, "r");
+	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", filename);
+		dbg("Can't open %s", udev_config_permission_filename);
 		return -ENODEV;
 	}
 
@@ -367,7 +413,7 @@ static int namedev_init_permissions(void)
 		if (temp == NULL)
 			break;
 
-		dbg("read %s", temp);
+		dbg_parse("read %s", temp);
 
 		/* eat the whitespace at the beginning of the line */
 		while (isspace(*temp))
@@ -385,17 +431,19 @@ static int namedev_init_permissions(void)
 
 		/* parse the line */
 		temp2 = strsep(&temp, ":");
-		strncpy(dev.attr.name, temp2, sizeof(dev.attr.name));
+		strncpy(dev.name, temp2, sizeof(dev.name));
 
 		temp2 = strsep(&temp, ":");
-		strncpy(dev.attr.owner, temp2, sizeof(dev.attr.owner));
+		strncpy(dev.owner, temp2, sizeof(dev.owner));
 
 		temp2 = strsep(&temp, ":");
-		strncpy(dev.attr.group, temp2, sizeof(dev.attr.owner));
+		strncpy(dev.group, temp2, sizeof(dev.owner));
 
-		dev.attr.mode = strtol(temp, NULL, 8);
+		dev.mode = strtol(temp, NULL, 8);
 
-		dbg("name = %s, owner = %s, group = %s, mode = %#o", dev.attr.name, dev.attr.owner, dev.attr.group, dev.attr.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);
@@ -408,70 +456,421 @@ exit:
 	return retval;
 }	
 
-static int get_default_mode(struct sysfs_class_device *class_dev)
+static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 {
 	/* just default everyone to rw for the world! */
 	return 0666;
 }
 
 
-static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *attr)
+static int exec_callout(struct config_device *dev, char *value, int len)
 {
+	int retval;
+	int res;
+	int status;
+	int fds[2];
+	pid_t pid;
+	int value_set = 0;
+	char buffer[256];
+
+	dbg("callout to %s\n", dev->exec_program);
+	retval = pipe(fds);
+	if (retval != 0) {
+		dbg("pipe failed");
+		return -1;
+	}
+	pid = fork();
+	if (pid == -1) {
+		dbg("fork failed");
+		return -1;
+	}
+
+	if (pid == 0) {
+		/*
+		 * child 
+		 */
+		close(STDOUT_FILENO);
+		dup(fds[1]);	/* dup write side of pipe to STDOUT */
+		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].
+		 */
+		close(fds[1]);
+		retval = 0;
+		while (1) {
+			res = read(fds[0], buffer, sizeof(buffer) - 1);
+			if (res <= 0)
+				break;
+			buffer[res] = '\0';
+			if (res > len) {
+				dbg("callout len %d too short\n", len);
+				retval = -1;
+			}
+			if (value_set) {
+				dbg("callout value already set");
+				retval = -1;
+			} else {
+				value_set = 1;
+				strncpy(value, buffer, len);
+			}
+		}
+		close(fds[0]);
+		res = wait(&status);
+		if (res < 0) {
+			dbg("wait failed result %d", res);
+			retval = -1;
+		}
+
+#ifndef __KLIBC__
+		if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
+			dbg("callout program status 0x%x", status);
+			retval = -1;
+		}
+#endif
+	}
+	return retval;
+}
+
+static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+	struct config_device *dev;
 	struct list_head *tmp;
-	int retval = 0;
+	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)))
+			continue;
+		if (strncmp(value, dev->id, sizeof(value)) != 0)
+			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 callout '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
+			dev->id, udev->name, 
+			dev->owner, dev->group, dev->mode);
+		return 0;
+	}
+	return -ENODEV;
+}
+
+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;
+	char *temp = NULL;
+
+	list_for_each(tmp, &config_device_list) {
+		dev = list_entry(tmp, struct config_device, node);
+		if (dev->type != LABEL)
+			continue;
+
+		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;
+
+		/* 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("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)
+			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("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);
+
+		return 0;
+	}
+	return -ENODEV;
+}
+
+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;
+	char path[SYSFS_PATH_MAX];
 	int found;
+	char *temp = NULL;
+
+	/* we have to have a sysfs device for NUMBER 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:
-			dbg("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
-				" owner = '%s', group = '%s', mode = '%#o'",
-				dev->attr.name, dev->bus, dev->sysfs_file, dev->sysfs_value,
-				dev->attr.owner, dev->attr.group, dev->attr.mode);
-			break;
-		case NUMBER:
-			dbg("NUMBER name = '%s', bus = '%s', id = '%s'"
-				" owner = '%s', group = '%s', mode = '%#o'",
-				dev->attr.name, dev->bus, dev->id,
-				dev->attr.owner, dev->attr.group, dev->attr.mode);
-			break;
-		case TOPOLOGY:
-			dbg("TOPOLOGY name = '%s', bus = '%s', place = '%s'"
-				" owner = '%s', group = '%s', mode = '%#o'",
-				dev->attr.name, dev->bus, dev->place,
-				dev->attr.owner, dev->attr.group, dev->attr.mode);
-			break;
-		case REPLACE:
-			if (strcmp(dev->kernel_name, class_dev->name) != 0)
-				continue;
-			strcpy(attr->name, dev->attr.name);
-			attr->mode = dev->attr.mode;
-			strcpy(attr->owner, dev->attr.owner);
-			strcpy(attr->group, dev->attr.group);
-			dbg("'%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
-				dev->kernel_name, attr->name, 
-				dev->attr.owner, dev->attr.group, dev->attr.mode);
-			return retval;
-			break;
-		default:
-			dbg("Unknown type of device!");
+		dev = list_entry(tmp, struct config_device, node);
+		if (dev->type != NUMBER)
+			continue;
+
+		found = 0;
+		strcpy(path, sysfs_device->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;
+			temp = strrchr(path, '/');
+			dbg_parse("NUMBER 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);
+		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) {
+		dev = list_entry(tmp, struct config_device, node);
+		if (dev->type != TOPOLOGY)
+			continue;
+
+		found = 0;
+		strcpy(path, sysfs_device->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);
+		
+		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;
+
+		dbg_parse("REPLACE: replace name '%s' with '%s'",
+			  dev->kernel_name, dev->name);
+		if (strcmp(dev->kernel_name, class_dev->name) != 0)
+			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("'%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 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])) {
+				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);
+				} else {
+					dbg_parse("class_dev_parent->name = %s", class_dev_parent->name);
+					if (class_dev_parent->sysdevice)
+						sysfs_device = class_dev_parent->sysdevice;
+				}
+			}
+		}
+	}
+		
+	if (sysfs_device) {
+		dbg_parse("sysfs_device->path = '%s'", sysfs_device->path);
+		dbg_parse("sysfs_device->bus_id = '%s'", sysfs_device->bus_id);
+	} else {
+		dbg_parse("class_dev->name = '%s'", class_dev->name);
+	}
+
+	/* rules are looked at in priority order */
+	retval = do_callout(class_dev, udev);
+	if (retval == 0)
+		goto done;
+
+	retval = do_label(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto done;
+
+	retval = do_number(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto done;
+
+	retval = do_topology(class_dev, udev, sysfs_device);
+	if (retval == 0)
+		goto done;
+
+	retval = do_replace(class_dev, udev);
+	if (retval == 0)
+		goto done;
+
+	strcpy(udev->name, class_dev->name);
+
+done:
+	/* substitute placeholder in NAME  */
+	while (1) {
+		char *pos = strchr(udev->name, '%');
+		char *dig;
+		char name[NAME_SIZE];
+		if (pos) {
+			strcpy(name, pos+2);
+			*pos = 0x00;
+			switch (pos[1]) {
+			case 'b':
+				if (!sysfs_device)
+					break;
+				strcat(udev->name, sysfs_device->bus_id);
+				dbg("bus_id appended: %s", 
+						sysfs_device->bus_id);
+				break;
+			case 'n':
+				dig = class_dev->name + strlen(class_dev->name);
+				while (isdigit(*(dig-1)))
+					dig--;
+				strcat(udev->name, dig);
+				dbg("kernel number appended: %s", dig);
+				break;
+			case 'm':
+				sprintf(pos, "%u", udev->minor);
+				dbg("minor number appended: %u", udev->minor);
+				break;
+			case 'M':
+				sprintf(pos, "%u", udev->major);
+				dbg("major number appended: %u", udev->major);
+				break;
+			default:
+				dbg("unknown substitution type: %%%c", pos[1]);
+				break;
+			}
+			strcat(udev->name, name);
+		} else
 			break;
-		}	
 	}
-	attr->mode = get_default_mode(class_dev);
-	attr->owner[0] = 0x00;
-	attr->group[0] = 0x00;
-	strcpy(attr->name, class_dev->name);
-exit:
-	return retval;
+
+	/* mode was never set above */
+	if (!udev->mode) {
+		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);
+
+	return 0;
 }
 
-int namedev_name_device(struct sysfs_class_device *class_dev, struct device_attr *attr)
+int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
 {
 	int retval;
 
-	retval = get_attr(class_dev, attr);
+	retval = get_attr(class_dev, dev);
 	if (retval)
 		dbg("get_attr failed");