X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev%2Flib%2Flibudev-device.c;h=055263bbef750232c22d48ff1b535f19ec634448;hb=1028fe14b65d861415cda99c4ff7d0bafd67bb7f;hp=c4714e4088d1a8dc6f1b5b0cc774fab307bf6e12;hpb=f454ecf7544077349c24e9fcfd418dbfca927063;p=elogind.git

diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index c4714e408..055263bbe 100644
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -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';