1 /*

     2  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 #include <sys/types.h>

    27 #include <sys/socket.h>

    28 

    29 #if defined(__solaris__) && !defined(PROTO_SDP)

    30 #define PROTO_SDP       257

    31 #endif

    32 

    33 #include "jni.h"

    34 #include "jni_util.h"

    35 #include "net_util.h"

    36 

    37 #define RESTARTABLE(_cmd, _result) do { \

    38   do { \

    39     _result = _cmd; \

    40   } while((_result == -1) && (errno == EINTR)); \

    41 } while(0)

    42 

    43 JNIEXPORT void JNICALL

    44 Java_sun_net_spi_SdpProvider_convert(JNIEnv *env, jclass cls, jint fd)

    45 {

    46 #ifdef PROTO_SDP

    47 #ifdef AF_INET6

    48     int domain = ipv6_available() ? AF_INET6 : AF_INET;

    49 #else

    50     int domain = AF_INET;

    51 #endif

    52     int s = socket(domain, SOCK_STREAM, PROTO_SDP);

    53     if (s < 0) {

    54         JNU_ThrowIOExceptionWithLastError(env, "socket");

    55     } else {

    56         int arg, len, res;

    57         struct linger linger;

    58 

    59         /* copy socket options that are relevant to SDP */

    60         len = sizeof(arg);

    61         if (getsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, &len) == 0)

    62             setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, len);

    63         len = sizeof(arg);

    64         if (getsockopt(fd, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, &len) == 0)

    65             setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, len);

    66         len = sizeof(linger);

    67         if (getsockopt(fd, SOL_SOCKET, SO_LINGER, (void*)&linger, &len) == 0)

    68             setsockopt(s, SOL_SOCKET, SO_LINGER, (char*)&linger, len);

    69 

    70         RESTARTABLE(dup2(s, fd), res);

    71         if (res < 0)

    72             JNU_ThrowIOExceptionWithLastError(env, "dup2");

    73         RESTARTABLE(close(s), res);

    74     }

    75 #else

    76     JNU_ThrowInternalError(env, "should not reach here");

    77 #endif

    78 }