/*

 * 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.

 */

/*

 * Test if rsocket is available

 */

#include <stdlib.h>

#ifdef __linux__

#include <dlfcn.h>

#include <sys/socket.h>

#include <stdio.h>

#include <string.h>

#endif

#include "jni.h"

jfieldID fid;

/*

 * Class:     RsocketTest

 * Method:    isRsocketAvailable0

 * Signature: ()Z

 */

JNIEXPORT jboolean

Java_RsocketTest_isRsocketAvailable0(JNIEnv *env, jclass cls) {

    jboolean result = JNI_FALSE;

#ifdef __linux__

    void *handle;

    int (*rs)(int, int, int);

    char str[74];

    strcpy(str, "librdmacm.so.1: cannot open shared object file: No such file or directory");

    fid = (*env)->GetStaticFieldID(env, cls , "libInstalled", "Z");

    handle = dlopen("librdmacm.so.1", RTLD_NOW);

    if (!handle) {

        int ret = strncmp(str, dlerror(), 74);

        if (ret == 0) {

            (*env)->SetStaticBooleanField(env, cls, fid, JNI_FALSE);

        }

        return JNI_FALSE;

    } else {

        (*env)->SetStaticBooleanField(env, cls, fid, JNI_TRUE);

    }

    rs = dlsym(handle, "rsocket");

    if (!rs)

        return JNI_FALSE;

    if ((*rs)(AF_INET, SOCK_STREAM, 0) > 0)

        result = JNI_TRUE;

    dlclose(handle);

#endif

    return result;

}