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-rw-r--r--udev/lib/libudev-device.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index c4714e4088..055263bbef 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';