X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Flib%2Flibudev-util.c;h=aa544fea2291da4be0c20642f70fee3c3e89c717;hp=7eadc7f2961270842691b12b0b223dee5174a095;hb=4c9dff47f696b1e6c89cc6e0a7ba683067927821;hpb=fb762bb928772f1923fef1e342d8ebca9bf7691f

diff --git a/udev/lib/libudev-util.c b/udev/lib/libudev-util.c
index 7eadc7f29..aa544fea2 100644
--- a/udev/lib/libudev-util.c
+++ b/udev/lib/libudev-util.c
@@ -64,12 +64,17 @@ ssize_t util_get_sys_driver(struct udev *udev, const char *syspath, char *driver
 
 int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size)
 {
+	struct stat statbuf;
 	char link_target[UTIL_PATH_SIZE];
 
 	int len;
 	int i;
 	int back;
 
+	if (lstat(syspath, &statbuf) < 0)
+		return -1;
+	if (!S_ISLNK(statbuf.st_mode))
+		return -1;
 	len = readlink(syspath, link_target, sizeof(link_target));
 	if (len <= 0)
 		return -1;