X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev.c;h=90d988311e2bbf3af044271390d5becb80e51fa8;hp=0c5d0509f9ad51ada38a7d9a1bed1651512df0cb;hb=f22e9686fd4f8e602e8dc11a4b06765206f26edf;hpb=3887557706fed195d85c958d5a07eb744b179e4c

diff --git a/namedev.c b/namedev.c
index 0c5d0509f..90d988311 100644
--- a/namedev.c
+++ b/namedev.c
@@ -183,6 +183,7 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
 	int slen;
 	struct sysfs_attribute *tmpattr;
 	unsigned int next_free_number;
+	struct sysfs_class_device *class_dev_parent;
 
 	pos = string;
 	while (1) {
@@ -201,6 +202,12 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
 
 
 		switch (c) {
+		case 'p':
+			if (strlen(udev->devpath) == 0)
+				break;
+			strfieldcatmax(string, udev->devpath, maxsize);
+			dbg("substitute kernel name '%s'", udev->kernel_name);
+			break;
 		case 'b':
 			if (strlen(udev->bus_id) == 0)
 				break;
@@ -290,6 +297,35 @@ static void apply_format(struct udevice *udev, char *string, size_t maxsize,
 				strfieldcatmax(string, temp2, maxsize);
 			}
 			break;
+		case 'P':
+			class_dev_parent = sysfs_get_classdev_parent(class_dev);
+			if (class_dev_parent != NULL) {
+				struct udevice udev_parent;
+
+				dbg("found parent '%s', get the node name", class_dev_parent->path);
+				memset(&udev_parent, 0x00, sizeof(struct udevice));
+				/* lookup the name in the udev_db with the DEVPATH of the parent */
+				strfieldcpy(udev_parent.devpath, &class_dev_parent->path[strlen(sysfs_path)]);
+				if (udev_db_get_device(&udev_parent) == 0) {
+					strfieldcatmax(string, udev_parent.name, maxsize);
+					dbg("substitute parent node name'%s'", udev_parent.name);
+				} else
+					dbg("parent not found in database");
+			}
+			break;
+		case 'N':
+			if (udev->tmp_node[0] == '\0') {
+				dbg("create temporary device node for callout");
+				snprintf(udev->tmp_node, NAME_SIZE-1, "%s/.tmp-%u-%u", udev_root, udev->major, udev->minor);
+				udev_make_node(udev, udev->tmp_node, udev->major, udev->minor, 0600, 0, 0);
+			}
+			strfieldcatmax(string, udev->tmp_node, maxsize);
+			dbg("substitute temporary device node name '%s'", udev->tmp_node);
+			break;
+		case 'r':
+			strfieldcatmax(string, udev_root, maxsize);
+			dbg("substitute udev_root '%s'", udev_root);
+			break;
 		default:
 			dbg("unknown substitution type '%%%c'", c);
 			break;
@@ -787,5 +823,11 @@ int namedev_name_device(struct udevice *udev, struct sysfs_class_device *class_d
 	dbg("no rule found, use kernel name '%s'", udev->name);
 
 exit:
+	if (udev->tmp_node[0] != '\0') {
+		dbg("removing temporary device node");
+		unlink_secure(udev->tmp_node);
+		udev->tmp_node[0] = '\0';
+	}
+
 	return 0;
 }