build: fix virutil build on mingw

https://bugzilla.redhat.com/show_bug.cgi?id=964358

On platforms without decent group support, the build failed:

Cannot export virGetGroupList: symbol not defined
./.libs/libvirt_security_manager.a(libvirt_security_manager_la-security_dac.o): In function `virSecurityDACPreFork':
/home/eblake/libvirt-tmp/build/src/../../src/security/security_dac.c:248: undefined reference to `virGetGroupList'
collect2: error: ld returned 1 exit status

* src/util/virutil.c (virGetGroupList): Provide dummy implementation.

Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit cd725c7a9350c8331a6f915127cf7007706f9926)

diff --git a/src/util/virutil.c b/src/util/virutil.c
index 3788189e5749911196fb4f3595778a2686196fcd..e93885ace074b74fd303340f26ecfaaed927e791 100644 (file)
--- a/src/util/virutil.c
+++ b/src/util/virutil.c
@@ -2797,6 +2797,14 @@ virSetUIDGID(uid_t uid, gid_t gid, gid_t *groups ATTRIBUTE_UNUSED,
 
 #else /* ! HAVE_GETPWUID_R */
 
+int
+virGetGroupList(uid_t uid ATTRIBUTE_UNUSED, gid_t gid ATTRIBUTE_UNUSED,
+                gid_t **list)
+{
+    *list = NULL;
+    return 0;
+}
+
 # ifdef WIN32
 /* These methods are adapted from GLib2 under terms of LGPLv2+ */
 static int
@@ -2941,6 +2949,7 @@ virGetUserRuntimeDirectory(void)
 {
     return virGetUserCacheDirectory();
 }
+
 # else /* !HAVE_GETPWUID_R && !WIN32 */
 char *
 virGetUserDirectory(void)