--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.security.auth/unix/native/libjaas/Unix.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <jni.h>
+#include "jni_util.h"
+#include "com_sun_security_auth_module_UnixSystem.h"
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* For POSIX-compliant getpwuid_r on Solaris */
+#if defined(__solaris__)
+#define _POSIX_PTHREAD_SEMANTICS
+#endif
+#include <pwd.h>
+
+/*
+ * Declare library specific JNI_Onload entry if static build
+ */
+DEF_STATIC_JNI_OnLoad
+
+JNIEXPORT void JNICALL
+Java_com_sun_security_auth_module_UnixSystem_getUnixInfo
+                                                (JNIEnv *env, jobject obj) {
+
+    int i;
+    char pwd_buf[1024];
+    struct passwd *pwd;
+    struct passwd resbuf;
+    jfieldID userNameID;
+    jfieldID userID;
+    jfieldID groupID;
+    jfieldID supplementaryGroupID;
+
+    jstring jstr;
+    jlongArray jgroups;
+    jlong *jgroupsAsArray;
+    jsize numSuppGroups;
+    gid_t *groups;
+    jclass cls;
+
+    numSuppGroups = getgroups(0, NULL);
+    groups = (gid_t *)calloc(numSuppGroups, sizeof(gid_t));
+    if (groups == NULL) {
+        jclass cls = (*env)->FindClass(env,"java/lang/OutOfMemoryError");
+        if (cls != NULL)
+            (*env)->ThrowNew(env, cls, NULL);
+        return;
+    }
+
+    cls = (*env)->GetObjectClass(env, obj);
+
+    memset(pwd_buf, 0, sizeof(pwd_buf));
+
+    if (getpwuid_r(getuid(), &resbuf, pwd_buf, sizeof(pwd_buf), &pwd) == 0 &&
+        pwd != NULL &&
+        getgroups(numSuppGroups, groups) != -1) {
+
+        userNameID = (*env)->GetFieldID(env, cls, "username", "Ljava/lang/String;");
+        if (userNameID == 0)
+            goto cleanUpAndReturn;
+
+        userID = (*env)->GetFieldID(env, cls, "uid", "J");
+        if (userID == 0)
+            goto cleanUpAndReturn;
+
+        groupID = (*env)->GetFieldID(env, cls, "gid", "J");
+        if (groupID == 0)
+            goto cleanUpAndReturn;
+
+        supplementaryGroupID = (*env)->GetFieldID(env, cls, "groups", "[J");
+        if (supplementaryGroupID == 0)
+            goto cleanUpAndReturn;
+
+        jstr = (*env)->NewStringUTF(env, pwd->pw_name);
+        if (jstr == NULL)
+            goto cleanUpAndReturn;
+        (*env)->SetObjectField(env, obj, userNameID, jstr);
+
+        (*env)->SetLongField(env, obj, userID, pwd->pw_uid);
+
+        (*env)->SetLongField(env, obj, groupID, pwd->pw_gid);
+
+        jgroups = (*env)->NewLongArray(env, numSuppGroups);
+        if (jgroups == NULL)
+            goto cleanUpAndReturn;
+        jgroupsAsArray = (*env)->GetLongArrayElements(env, jgroups, 0);
+        if (jgroupsAsArray == NULL)
+            goto cleanUpAndReturn;
+        for (i = 0; i < numSuppGroups; i++)
+            jgroupsAsArray[i] = groups[i];
+        (*env)->ReleaseLongArrayElements(env, jgroups, jgroupsAsArray, 0);
+        (*env)->SetObjectField(env, obj, supplementaryGroupID, jgroups);
+    }
+cleanUpAndReturn:
+    free(groups);
+    return;
+}