| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include "jni.h" |
| 27 | #include "jni_util.h" |
| 28 | #include "jvm.h" |
| 29 | #include "nio.h" |
| 30 | #include "nio_util.h" |
| 31 | #include "sun_nio_ch_FileKey.h" |
| 32 | |
| 33 | static jfieldID key_st_dev; /* id for FileKey.st_dev */ |
| 34 | static jfieldID key_st_ino; /* id for FileKey.st_ino */ |
| 35 | |
| 36 | #define RESTARTABLE(_cmd, _result) do { \ |
| 37 | do { \ |
| 38 | _result = _cmd; \ |
| 39 | } while ((_result == -1) && (errno == EINTR)); \ |
| 40 | } while(0) |
| 41 | |
| 42 | |
| 43 | JNIEXPORT void JNICALL |
| 44 | Java_sun_nio_ch_FileKey_initIDs(JNIEnv *env, jclass clazz) |
| 45 | { |
| 46 | key_st_dev = (*env)->GetFieldID(env, clazz, "st_dev", "J"); |
| 47 | key_st_ino = (*env)->GetFieldID(env, clazz, "st_ino", "J"); |
| 48 | } |
| 49 | |
| 50 | |
| 51 | JNIEXPORT void JNICALL |
| 52 | Java_sun_nio_ch_FileKey_init(JNIEnv *env, jobject this, jobject fdo) |
| 53 | { |
| 54 | struct stat64 fbuf; |
| 55 | int res; |
| 56 | |
| 57 | RESTARTABLE(fstat64(fdval(env, fdo), &fbuf), res); |
| 58 | if (res < 0) { |
| 59 | JNU_ThrowIOExceptionWithLastError(env, "fstat64 failed"); |
| 60 | } else { |
| 61 | (*env)->SetLongField(env, this, key_st_dev, (jlong)fbuf.st_dev); |
| 62 | (*env)->SetLongField(env, this, key_st_ino, (jlong)fbuf.st_ino); |
| 63 | } |
| 64 | } |