[PATCH] DEVPATH for netdev

Here we change the DEVPATH for netdev's in the environment of the dev.d/
scripts to the name the device is renamed to. The original name doesn't
exist in the kernel after rename.

dev_d.c

@@ -61,7 +61,7 @@ static int run_program(char *name)
  * 	subsystem/
  * 	default/
  */
-void dev_d_send(struct udevice *dev, char *subsystem)
+void dev_d_send(struct udevice *dev, char *subsystem, char *devpath)
 {
 	char dirname[256];
 	char devname[NAME_SIZE];
@@ -74,8 +74,8 @@ void dev_d_send(struct udevice *dev, char *subsystem)
 		strfieldcat(devname, dev->name);
 	} else if (dev->type == 'n') {
 		strfieldcpy(devname, dev->name);
+		setenv("DEVPATH", devpath, 1);
 	}
-	setenv("DEVNODE", devname, 1); /* FIXME: bad name for netif */
 	setenv("DEVNAME", devname, 1);
 	dbg("DEVNAME='%s'", devname);
 

udev-add.c

@@ -403,7 +403,7 @@ int udev_add_device(char *path, char *subsystem, int fake)
 {
 	struct sysfs_class_device *class_dev;
 	struct udevice dev;
-	char key[DEVPATH_SIZE];
+	char devpath[DEVPATH_SIZE];
 	char *pos;
 	int retval;
 
@@ -452,10 +452,11 @@ int udev_add_device(char *path, char *subsystem, int fake)
 			dbg("udevdb_add_dev failed, but we are going to try "
 			    "to create the node anyway. But remove might not "
 			    "work properly for this device.");
+
+		dev_d_send(&dev, subsystem, path);
 		break;
 
 	case 'n':
-		strfieldcpy(key, path);
 		if (strcmp(dev.name, dev.kernel_name) != 0) {
 			retval = rename_net_if(&dev, fake);
 			if (fake || retval != 0)
@@ -463,20 +464,20 @@ int udev_add_device(char *path, char *subsystem, int fake)
 			/* netif's are keyed with the configured name, cause
 			 * the original kernel name sleeps with the fishes
 			 */
-			pos = strrchr(key, '/');
+			strfieldcpy(devpath, path);
+			pos = strrchr(devpath, '/');
 			if (pos != NULL) {
 				pos[1] = '\0';
-				strfieldcat(key, dev.name);
+				strfieldcat(devpath, dev.name);
 			}
 		}
-		if (udevdb_add_dev(key, &dev) != 0)
+		if (udevdb_add_dev(devpath, &dev) != 0)
 			dbg("udevdb_add_dev failed");
+
+		dev_d_send(&dev, subsystem, devpath);
 		break;
 	}
 
-	/* execute programs in dev.d/ with the name in the environment */
-	dev_d_send(&dev, subsystem);
-
 exit:
 	sysfs_close_class_device(class_dev);
 

udev-remove.c

@@ -148,7 +148,7 @@ int udev_remove_device(char *path, char *subsystem)
 	dbg("name='%s'", dev.name);
 
 	dev.type = get_device_type(path, subsystem);
-	dev_d_send(&dev, subsystem);
+	dev_d_send(&dev, subsystem, path);
 	udevdb_delete_dev(path);
 
 	if (dev.type == 'b' || dev.type == 'c')

udev.h

@@ -65,7 +65,7 @@ extern int udev_add_device(char *path, char *subsystem, int fake);
 extern int udev_remove_device(char *path, char *subsystem);
 extern void udev_init_config(void);
 extern int parse_get_pair(char **orig_string, char **left, char **right);
-extern void dev_d_send(struct udevice *dev, char *subsystem);
+extern void dev_d_send(struct udevice *dev, char *subsystem, char *devpath);
 
 extern char **main_argv;
 extern char **main_envp;

udev_config.c

@@ -86,13 +86,13 @@ static void init_variables(void)
 
 #define set_var(_name, _var)				\
 	if (strcasecmp(variable, _name) == 0) {		\
-		dbg_parse("%s = '%s'", _name, value);	\
-		strfieldcpymax(_var, value, sizeof(_var));\
+		dbg_parse("%s='%s'", _name, value);	\
+		strfieldcpy(_var, value);\
 	}
 
 #define set_bool(_name, _var)				\
 	if (strcasecmp(variable, _name) == 0) {		\
-		dbg_parse("%s = '%s'", _name, value);	\
+		dbg_parse("%s='%s'", _name, value);	\
 		_var = string_is_true(value);		\
 	}
 

udevd.c

@@ -139,8 +139,10 @@ static void udev_run(struct hotplug_msg *msg)
 	char devpath[DEVPATH_SIZE];
 	char *env[] = { action, devpath, NULL };
 
-	snprintf(action, sizeof(action), "ACTION=%s", msg->action);
-	snprintf(devpath, sizeof(devpath), "DEVPATH=%s", msg->devpath);
+	strcpy(action, "ACTION=");
+	strfieldcat(action, msg->action);
+	strcpy(devpath, "DEVPATH=");
+	strfieldcat(devpath, msg->devpath);
 
 	pid = fork();
 	switch (pid) {

udevstart.c

@@ -33,6 +33,7 @@
 #include <unistd.h>
 
 #include "logging.h"
+#include "udev_lib.h"
 
 
 #ifdef LOG
@@ -61,8 +62,8 @@ static void udev_exec(const char *path, const char* subsystem)
 	char nosleep[] = "UDEV_NO_SLEEP=1";
 	char *env[] = { action, devpath, nosleep, NULL };
 
-	snprintf(devpath, MAX_PATHLEN, "DEVPATH=%s", path);
-	devpath[MAX_PATHLEN-1] = '\0';
+	strcpy(action, "DEVPATH=%s");
+	strfieldcat(action, path);
 
 	pid = fork();
 	switch (pid) {