udevd: always create /dev/{char,block}/$major:$minor

2 files changed, 16 insertions, 3 deletions

diff --git a/rules/rules.d/50-udev-default.rules b/rules/rules.d/50-udev-default.rules
index c4eb9276ad..cd745effe0 100644
--- a/rules/rules.d/50-udev-default.rules
+++ b/rules/rules.d/50-udev-default.rules
@@ -1,8 +1,5 @@
 # do not edit this file, it will be overwritten on update
 
-SUBSYSTEM=="block", SYMLINK{unique}+="block/%M:%m"
-SUBSYSTEM!="block", SYMLINK{unique}+="char/%M:%m"
-
 KERNEL=="pty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
 KERNEL=="tty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
 KERNEL=="ptmx",			GROUP="tty", MODE="0666"
diff --git a/udev/udev-node.c b/udev/udev-node.c
index 92634427f9..70488c420b 100644
--- a/udev/udev-node.c
+++ b/udev/udev-node.c
@@ -369,6 +369,7 @@ void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev
 int udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid)
 {
 	struct udev *udev = udev_device_get_udev(dev);
+	char filename[UTIL_PATH_SIZE];
 	struct udev_list_entry *list_entry;
 	int err = 0;
 
@@ -382,6 +383,13 @@ int udev_node_add(struct udev_device *dev, mode_t mode, uid_t uid, gid_t gid)
 		goto exit;
 	}
 
+	/* always add /dev/{block,char}/$major:$minor */
+	snprintf(filename, sizeof(filename), "%s/%s/%u:%u",
+		 udev_get_dev_path(udev),
+		 strcmp(udev_device_get_subsystem(dev), "block") == 0 ? "block" : "char",
+		 major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)));
+	node_symlink(udev, udev_device_get_devnode(dev), filename);
+
 	/* create/update symlinks, add symlinks to name index */
 	udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
 		if (udev_list_entry_get_flags(list_entry))
@@ -401,6 +409,7 @@ int udev_node_remove(struct udev_device *dev)
 	const char *devnode;
 	struct stat stats;
 	struct udev_device *dev_check;
+	char filename[UTIL_PATH_SIZE];
 	int err = 0;
 
 	/* remove/update symlinks, remove symlinks from name index */
@@ -434,6 +443,13 @@ int udev_node_remove(struct udev_device *dev)
 	err = util_unlink_secure(udev, devnode);
 	if (err == 0)
 		util_delete_path(udev, devnode);
+
+	/* remove /dev/{block,char}/$major:$minor */
+	snprintf(filename, sizeof(filename), "%s/%s/%u:%u",
+		 udev_get_dev_path(udev),
+		 strcmp(udev_device_get_subsystem(dev), "block") == 0 ? "block" : "char",
+		 major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)));
+	unlink(filename);
 out:
 	return err;
 }