libadacl: improve safe_open() error message when given bad args.

diff --git a/src/libadacl.c b/src/libadacl.c
index 69f20733150e1533982adb0044b249e9bbc76aa7..1fb54a87bc8233b8a33bb08c20be1c17ae42be21 100644 (file)
--- a/src/libadacl.c
+++ b/src/libadacl.c
@@ -102,7 +102,8 @@ int safe_open_ex(int at_fd, char* pathname, int flags) {
  */
 int safe_open(const char* pathname, int flags) {
   if (pathname == NULL || strlen(pathname) == 0 || pathname[0] == '\0') {
-    /* error? */
+    errno = EINVAL;
+    perror("safe_open (args)");
     return OPEN_ERROR;
   }