From: Lars Mueller <lars@samba.org>
Date: Thu, 1 Dec 2015 20:40:45 +0100
Subject: [PATCH] cover DIR krb5 ccache too
Bugzilla: bso#11631

Index: source3/winbindd/winbindd_pam.c
===================================================================
--- source3/winbindd/winbindd_pam.c.orig
+++ source3/winbindd/winbindd_pam.c
@@ -42,6 +42,7 @@
 #include "auth/gensec/gensec.h"
 #include "librpc/crypto/gse_krb5.h"
 #include "lib/afs/afs_funcs.h"
+#include <fcntl.h>
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
@@ -493,6 +494,23 @@ static const char *generate_krb5_ccache(
 			gen_cc = talloc_asprintf(
 				mem_ctx, "WRFILE:/tmp/krb5cc_%d", uid);
 		}
+		if (strequal(type, "DIR")) {
+			char *run_user_dir = NULL;
+			int fd;
+			gen_cc = talloc_asprintf(
+				mem_ctx, "DIR:/run/user/%d/krb5cc", uid);
+			run_user_dir = talloc_asprintf(
+				mem_ctx, "/run/user/%d", uid);
+			fd = open(run_user_dir, O_DIRECTORY);
+			if (fd == -1) {
+				DEBUG(10, ("creating DIR: %s\n", run_user_dir));
+				mkdir(run_user_dir, 0700);
+				chown(run_user_dir, uid, (gid_t)-1);
+			} else {
+				close(fd);
+			}
+			talloc_free(run_user_dir);
+		}
 		if (strequal(type, "KEYRING")) {
 			gen_cc = talloc_asprintf(
 				mem_ctx, "KEYRING:persistent:%d", uid);