Add SPDX license identifiers to source files under the LGPL

[thirdparty/systemd.git] / src / libudev / libudev-enumerate.c

diff --git a/src/libudev/libudev-enumerate.c b/src/libudev/libudev-enumerate.c
index 442f9615f2d4310a4eabc5b612d9926e256ebad3..271880075e8b3c82e8a5e7fbc6cd539518c863ba 100644 (file)
--- a/src/libudev/libudev-enumerate.c
+++ b/src/libudev/libudev-enumerate.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
   This file is part of systemd.
 
@@ -112,7 +113,7 @@ _public_ struct udev_enumerate *udev_enumerate_new(struct udev *udev) {
  **/
 _public_ struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate) {
         if (udev_enumerate)
-                udev_enumerate->refcount ++;
+                udev_enumerate->refcount++;
 
         return udev_enumerate;
 }
@@ -159,6 +160,8 @@ _public_ struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumer
  * Returns: a udev_list_entry.
  */
 _public_ struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate) {
+        struct udev_list_entry *e;
+
         assert_return_errno(udev_enumerate, NULL, EINVAL);
 
         if (!udev_enumerate->devices_uptodate) {
@@ -182,7 +185,11 @@ _public_ struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enume
                 udev_enumerate->devices_uptodate = true;
         }
 
-        return udev_list_get_entry(&udev_enumerate->devices_list);
+        e = udev_list_get_entry(&udev_enumerate->devices_list);
+        if (!e)
+                errno = ENODATA;
+
+        return e;
 }
 
 /**
@@ -370,7 +377,7 @@ _public_ int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumer
  * Returns: 0 on success, otherwise a negative error value.
  */
 _public_ int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath) {
-        _cleanup_device_unref_ sd_device *device = NULL;
+        _cleanup_(sd_device_unrefp) sd_device *device = NULL;
         int r;
 
         assert_return(udev_enumerate, -EINVAL);