limit $attr(<symlink>) magic to well-known links only

2008-11-17 02:01:37 +01:00
parent 56116314d1
commit 096e59edc9
1 changed files with 6 additions and 1 deletions
@@ -859,11 +859,16 @@ const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const
 	}

 	if (S_ISLNK(statbuf.st_mode)) {
-		/* links return the last element of the target path */
 		char target[UTIL_NAME_SIZE];
 		int len;
 		char *pos;

+		/* some core links return the last element of the target path */
+		if (strcmp(sysattr, "driver") != 0 &&
+		    strcmp(sysattr, "subsystem") != 0 &&
+		    strcmp(sysattr, "module") != 0)
+			goto out;
+
 		len = readlink(path, target, sizeof(target));
 		if (len > 0) {
 			target[len] = '\0';