libcore_io_Linux.cpp revision 4f11ebea266eada830d507b8f011e811a8e5d7bc
1ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes/* 2ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * Copyright (C) 2011 The Android Open Source Project 3ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * 4ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 5ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * you may not use this file except in compliance with the License. 6ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * You may obtain a copy of the License at 7ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * 8ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 9ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * 10ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * Unless required by applicable law or agreed to in writing, software 11ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 12ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * See the License for the specific language governing permissions and 14ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes * limitations under the License. 15ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes */ 16ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes 17ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes#define LOG_TAG "Posix" 18ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes 19ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes#include "JNIHelp.h" 20ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes#include "JniConstants.h" 21ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes#include "JniException.h" 220a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes#include "NetworkUtilities.h" 230f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes#include "ScopedPrimitiveArray.h" 24ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes#include "ScopedUtfChars.h" 2559fa7163774d6930a174bc038414a4b780581957Elliott Hughes#include "StaticAssert.h" 26ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes#include "toStringArray.h" 27ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes 28ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes#include <errno.h> 290ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes#include <fcntl.h> 30b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes#include <net/if.h> 314f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes#include <netdb.h> 320a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes#include <netinet/in.h> 33ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes#include <stdlib.h> 34461d0d860814c68154d8dd06d24f94118f33d28aElliott Hughes#include <sys/ioctl.h> 357e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes#include <sys/mman.h> 368b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes#include <sys/sendfile.h> 3759e4744d27231f260271dbbca406e0cc39768116Elliott Hughes#include <sys/socket.h> 3847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes#include <sys/stat.h> 390a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes#include <sys/time.h> 400ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes#include <sys/types.h> 41bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes#include <sys/uio.h> 427341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes#include <sys/utsname.h> 4359fa7163774d6930a174bc038414a4b780581957Elliott Hughes#include <sys/vfs.h> // Bionic doesn't have <sys/statvfs.h> 440ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes#include <unistd.h> 45ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes 464f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughesstatic void throwException(JNIEnv* env, jclass exceptionClass, jmethodID ctor3, jmethodID ctor2, 474f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes const char* functionName, int error) { 48ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes jthrowable cause = NULL; 49ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes if (env->ExceptionCheck()) { 50ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes cause = env->ExceptionOccurred(); 51ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes env->ExceptionClear(); 52ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes } 53ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes 544f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes ScopedLocalRef<jstring> detailMessage(env, env->NewStringUTF(functionName)); 554f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes if (detailMessage.get() == NULL) { 56f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes // Not really much we can do here. We're probably dead in the water, 57f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes // but let's try to stumble on... 58f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes env->ExceptionClear(); 59f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes } 60f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes 61ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes jobject exception; 62ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes if (cause != NULL) { 634f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes exception = env->NewObject(exceptionClass, ctor3, detailMessage.get(), error, cause); 64ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes } else { 654f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes exception = env->NewObject(exceptionClass, ctor2, detailMessage.get(), error); 66ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes } 67ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes env->Throw(reinterpret_cast<jthrowable>(exception)); 68dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes} 69dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes 704f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughesstatic void throwErrnoException(JNIEnv* env, const char* functionName) { 714f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes int error = errno; 724f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes static jmethodID ctor3 = env->GetMethodID(JniConstants::errnoExceptionClass, 734f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes "<init>", "(Ljava/lang/String;ILjava/lang/Throwable;)V"); 744f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes static jmethodID ctor2 = env->GetMethodID(JniConstants::errnoExceptionClass, 754f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes "<init>", "(Ljava/lang/String;I)V"); 764f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes throwException(env, JniConstants::errnoExceptionClass, ctor3, ctor2, functionName, error); 774f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes} 784f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes 794f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughesstatic void throwGaiException(JNIEnv* env, const char* functionName, int error) { 804f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes if (error == EAI_SYSTEM) { 814f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // EAI_SYSTEM means "look at errno instead", so we want our GaiException to have the 824f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // relevant ErrnoException as its cause. 834f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes throwErrnoException(env, functionName); 844f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // Deliberately fall through to throw another exception... 854f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes } 864f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes static jmethodID ctor3 = env->GetMethodID(JniConstants::gaiExceptionClass, 874f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes "<init>", "(Ljava/lang/String;ILjava/lang/Throwable;)V"); 884f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes static jmethodID ctor2 = env->GetMethodID(JniConstants::gaiExceptionClass, 894f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes "<init>", "(Ljava/lang/String;I)V"); 904f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes throwException(env, JniConstants::gaiExceptionClass, ctor3, ctor2, functionName, error); 914f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes} 924f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes 93dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughestemplate <typename rc_t> 947e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughesstatic rc_t throwIfMinusOne(JNIEnv* env, const char* name, rc_t rc) { 95dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes if (rc == rc_t(-1)) { 967e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, name); 97dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes } 98dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes return rc; 9947cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes} 10047cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes 101bbac92e691de7d570928ddfba639067978e55b06Elliott Hughestemplate <typename T> 102bbac92e691de7d570928ddfba639067978e55b06Elliott Hughesclass IoVec { 103bbac92e691de7d570928ddfba639067978e55b06Elliott Hughespublic: 104bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes IoVec(JNIEnv* env, size_t bufferCount) : mEnv(env), mBufferCount(bufferCount) { 105bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 106bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 107bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes bool init(jobjectArray javaBuffers, jintArray javaOffsets, jintArray javaByteCounts) { 108bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes // We can't delete our local references until after the I/O, so make sure we have room. 109bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (mEnv->PushLocalFrame(mBufferCount + 16) < 0) { 110bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return false; 111bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 112bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes ScopedIntArrayRO offsets(mEnv, javaOffsets); 113bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (offsets.get() == NULL) { 114bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return false; 115bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 116bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes ScopedIntArrayRO byteCounts(mEnv, javaByteCounts); 117bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (byteCounts.get() == NULL) { 118bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return false; 119bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 120bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes // TODO: Linux actually has a 1024 buffer limit. glibc works around this, and we should too. 121bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes for (size_t i = 0; i < mBufferCount; ++i) { 122bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes jobject buffer = mEnv->GetObjectArrayElement(javaBuffers, i); 123bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes jbyte* ptr; 124bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (mEnv->IsInstanceOf(buffer, JniConstants::byteArrayClass)) { 125bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes // We need to pin the array for the duration. 126bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes jbyteArray byteArray = reinterpret_cast<jbyteArray>(buffer); 127bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes mScopedByteArrays.push_back(new T(mEnv, byteArray)); 128bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes ptr = const_cast<jbyte*>(mScopedByteArrays.back()->get()); 129bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } else { 130bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes // A direct ByteBuffer is easier. 131bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes ptr = reinterpret_cast<jbyte*>(mEnv->GetDirectBufferAddress(buffer)); 132bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 133bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (ptr == NULL) { 134bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return false; 135bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 136bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes struct iovec iov; 137bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes iov.iov_base = reinterpret_cast<void*>(ptr + offsets[i]); 138bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes iov.iov_len = byteCounts[i]; 139bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes mIoVec.push_back(iov); 140bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 141bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return true; 142bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 143bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 144bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes ~IoVec() { 145bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes for (size_t i = 0; i < mScopedByteArrays.size(); ++i) { 146bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes delete mScopedByteArrays[i]; 147bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 148bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes mEnv->PopLocalFrame(NULL); 149bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 150bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 151bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes iovec* get() { 152bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return &mIoVec[0]; 153bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 154bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 155bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes size_t size() { 156bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return mBufferCount; 157bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 158bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 159bbac92e691de7d570928ddfba639067978e55b06Elliott Hughesprivate: 160bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes JNIEnv* mEnv; 161bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes size_t mBufferCount; 162bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes std::vector<iovec> mIoVec; 163bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes std::vector<T*> mScopedByteArrays; 164bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes}; 165bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 1660a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject makeInetSocketAddress(JNIEnv* env, const sockaddr_storage* ss, int port) { 1670a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes jobject inetAddress = socketAddressToInetAddress(env, ss); 1680a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (inetAddress == NULL) { 1690a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 1700a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 1710a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::inetSocketAddressClass, "<init>", 1720a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes "(Ljava/net/InetAddress;I)V"); 1730a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return env->NewObject(JniConstants::inetSocketAddressClass, ctor, inetAddress, port); 1740a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 1750a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 1760a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject makeSocketAddress(JNIEnv* env, const sockaddr_storage* ss) { 1770a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (ss->ss_family == AF_INET) { 1780a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int port = ntohs(reinterpret_cast<const sockaddr_in*>(ss)->sin_port); 1790a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return makeInetSocketAddress(env, ss, port); 1800a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } else if (ss->ss_family == AF_INET6) { 1810a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int port = ntohs(reinterpret_cast<const sockaddr_in6*>(ss)->sin6_port); 1820a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return makeInetSocketAddress(env, ss, port); 1830a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 1840a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes // TODO: support AF_UNIX and AF_UNSPEC, and have some other behavior for other families 1850a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 1860a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 1870a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 18847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughesstatic jobject makeStructStat(JNIEnv* env, const struct stat& sb) { 18947cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::structStatClass, "<init>", 19047cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes "(JJIJIIJJJJJJJ)V"); 19147cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return env->NewObject(JniConstants::structStatClass, ctor, 19259fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.st_dev), static_cast<jlong>(sb.st_ino), 19359fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jint>(sb.st_mode), static_cast<jlong>(sb.st_nlink), 19459fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jint>(sb.st_uid), static_cast<jint>(sb.st_gid), 19559fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.st_rdev), static_cast<jlong>(sb.st_size), 19659fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.st_atime), static_cast<jlong>(sb.st_mtime), 19759fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.st_ctime), static_cast<jlong>(sb.st_blksize), 19859fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.st_blocks)); 19959fa7163774d6930a174bc038414a4b780581957Elliott Hughes} 20059fa7163774d6930a174bc038414a4b780581957Elliott Hughes 20159fa7163774d6930a174bc038414a4b780581957Elliott Hughesstatic jobject makeStructStatFs(JNIEnv* env, const struct statfs& sb) { 20259fa7163774d6930a174bc038414a4b780581957Elliott Hughes STATIC_ASSERT(sizeof(sb.f_bavail) == sizeof(jlong), statfs_not_64_bit); 20359fa7163774d6930a174bc038414a4b780581957Elliott Hughes STATIC_ASSERT(sizeof(sb.f_bfree) == sizeof(jlong), statfs_not_64_bit); 20459fa7163774d6930a174bc038414a4b780581957Elliott Hughes STATIC_ASSERT(sizeof(sb.f_blocks) == sizeof(jlong), statfs_not_64_bit); 20559fa7163774d6930a174bc038414a4b780581957Elliott Hughes 20659fa7163774d6930a174bc038414a4b780581957Elliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::structStatFsClass, "<init>", 20759fa7163774d6930a174bc038414a4b780581957Elliott Hughes "(JJJJJJJJ)V"); 20859fa7163774d6930a174bc038414a4b780581957Elliott Hughes return env->NewObject(JniConstants::structStatFsClass, ctor, static_cast<jlong>(sb.f_bsize), 20959fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.f_blocks), static_cast<jlong>(sb.f_bfree), 21059fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.f_bavail), static_cast<jlong>(sb.f_files), 21159fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.f_ffree), static_cast<jlong>(sb.f_namelen), 21259fa7163774d6930a174bc038414a4b780581957Elliott Hughes static_cast<jlong>(sb.f_frsize)); 21347cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes} 21447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes 2150a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject makeStructLinger(JNIEnv* env, const struct linger& l) { 2160a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::structLingerClass, "<init>", "(II)V"); 2170a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return env->NewObject(JniConstants::structLingerClass, ctor, l.l_onoff, l.l_linger); 2180a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 2190a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 2200a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject makeStructTimeval(JNIEnv* env, const struct timeval& tv) { 2210a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::structTimevalClass, "<init>", "(JJ)V"); 2220a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return env->NewObject(JniConstants::structTimevalClass, ctor, 2230a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes static_cast<jlong>(tv.tv_sec), static_cast<jlong>(tv.tv_usec)); 2240a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 2250a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 2267341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughesstatic jobject makeStructUtsname(JNIEnv* env, const struct utsname& buf) { 2277341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes#define TO_JAVA_STRING(NAME) \ 2287341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes jstring NAME = env->NewStringUTF(buf. NAME); \ 2297341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes if (NAME == NULL) return NULL; 2307341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes 2317341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes TO_JAVA_STRING(sysname); 2327341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes TO_JAVA_STRING(nodename); 2337341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes TO_JAVA_STRING(release); 2347341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes TO_JAVA_STRING(version); 2357341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes TO_JAVA_STRING(machine); 2367341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes#undef TO_JAVA_STRING 2377341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes 2387341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes static jmethodID ctor = env->GetMethodID(JniConstants::structUtsnameClass, "<init>", 2397341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V"); 2407341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes return env->NewObject(JniConstants::structUtsnameClass, ctor, 2417341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes sysname, nodename, release, version, machine); 2427341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes}; 2437341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes 24447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughesstatic jobject doStat(JNIEnv* env, jstring javaPath, bool isLstat) { 24547cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes ScopedUtfChars path(env, javaPath); 24647cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes if (path.c_str() == NULL) { 24747cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return NULL; 24847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes } 24947cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes struct stat sb; 25047cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes int rc = isLstat ? TEMP_FAILURE_RETRY(lstat(path.c_str(), &sb)) 25147cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes : TEMP_FAILURE_RETRY(stat(path.c_str(), &sb)); 252dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes if (rc == -1) { 2537e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, isLstat ? "lstat" : "stat"); 25447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return NULL; 25547cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes } 25647cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return makeStructStat(env, sb); 257ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes} 258ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes 259ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughesstatic jboolean Posix_access(JNIEnv* env, jobject, jstring javaPath, jint mode) { 260ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes ScopedUtfChars path(env, javaPath); 261ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes if (path.c_str() == NULL) { 262ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes return JNI_FALSE; 263ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes } 26447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes int rc = TEMP_FAILURE_RETRY(access(path.c_str(), mode)); 265dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes if (rc == -1) { 2667e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, "access"); 267dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes } 268ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes return (rc == 0); 269ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes} 270ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes 271b7190190e0ef8de883c952efb319ce7748831faaElliott Hughesstatic void Posix_chmod(JNIEnv* env, jobject, jstring javaPath, jint mode) { 272b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes ScopedUtfChars path(env, javaPath); 273b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes if (path.c_str() == NULL) { 274b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes return; 275b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes } 276b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes throwIfMinusOne(env, "chmod", TEMP_FAILURE_RETRY(chmod(path.c_str(), mode))); 277b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes} 278b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes 279462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughesstatic void Posix_close(JNIEnv* env, jobject, jobject javaFd) { 280462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes // Get the FileDescriptor's 'fd' field and clear it. 281462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes // We need to do this before we can throw an IOException (http://b/3222087). 282462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 283462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes jniSetFileDescriptorOfFD(env, javaFd, -1); 284462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes 285462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes // Even if close(2) fails with EINTR, the fd will have been closed. 286462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes // Using TEMP_FAILURE_RETRY will either lead to EBADF or closing someone else's fd. 287462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes // http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html 288462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes throwIfMinusOne(env, "close", close(fd)); 289462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes} 290462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes 291ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughesstatic jobjectArray Posix_environ(JNIEnv* env, jobject) { 292ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes extern char** environ; // Standard, but not in any header file. 293ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes return toStringArray(env, environ); 294ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes} 295ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes 296fc549a0b0388987b26dea524894d75a63d14783bElliott Hughesstatic jint Posix_fcntlVoid(JNIEnv* env, jobject, jobject javaFd, jint cmd) { 297fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 298fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes return throwIfMinusOne(env, "fcntl", TEMP_FAILURE_RETRY(fcntl(fd, cmd))); 299fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes} 300fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes 301fc549a0b0388987b26dea524894d75a63d14783bElliott Hughesstatic jint Posix_fcntlLong(JNIEnv* env, jobject, jobject javaFd, jint cmd, jlong arg) { 302fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 303fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes return throwIfMinusOne(env, "fcntl", TEMP_FAILURE_RETRY(fcntl(fd, cmd, arg))); 304fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes} 305fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes 306fc549a0b0388987b26dea524894d75a63d14783bElliott Hughesstatic jint Posix_fcntlFlock(JNIEnv* env, jobject, jobject javaFd, jint cmd, jobject javaFlock) { 307fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes static jfieldID typeFid = env->GetFieldID(JniConstants::structFlockClass, "l_type", "S"); 308fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes static jfieldID whenceFid = env->GetFieldID(JniConstants::structFlockClass, "l_whence", "S"); 309fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes static jfieldID startFid = env->GetFieldID(JniConstants::structFlockClass, "l_start", "J"); 310fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes static jfieldID lenFid = env->GetFieldID(JniConstants::structFlockClass, "l_len", "J"); 311fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes static jfieldID pidFid = env->GetFieldID(JniConstants::structFlockClass, "l_pid", "I"); 312fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes 313fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes struct flock64 lock; 314fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes memset(&lock, 0, sizeof(lock)); 315fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes lock.l_type = env->GetShortField(javaFlock, typeFid); 316fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes lock.l_whence = env->GetShortField(javaFlock, whenceFid); 317fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes lock.l_start = env->GetLongField(javaFlock, startFid); 318fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes lock.l_len = env->GetLongField(javaFlock, lenFid); 319fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes lock.l_pid = env->GetIntField(javaFlock, pidFid); 320fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes 321fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 322fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes int rc = throwIfMinusOne(env, "fcntl", TEMP_FAILURE_RETRY(fcntl(fd, cmd, &lock))); 323fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes if (rc != -1) { 324fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes env->SetShortField(javaFlock, typeFid, lock.l_type); 325fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes env->SetShortField(javaFlock, whenceFid, lock.l_whence); 326fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes env->SetLongField(javaFlock, startFid, lock.l_start); 327fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes env->SetLongField(javaFlock, lenFid, lock.l_len); 328fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes env->SetIntField(javaFlock, pidFid, lock.l_pid); 329fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes } 330fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes return rc; 331fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes} 332fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes 33352724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughesstatic void Posix_fdatasync(JNIEnv* env, jobject, jobject javaFd) { 33452724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 3357e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwIfMinusOne(env, "fdatasync", TEMP_FAILURE_RETRY(fdatasync(fd))); 33652724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes} 33752724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes 33847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughesstatic jobject Posix_fstat(JNIEnv* env, jobject, jobject javaFd) { 33947cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 34047cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes struct stat sb; 34147cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes int rc = TEMP_FAILURE_RETRY(fstat(fd, &sb)); 342dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes if (rc == -1) { 3437e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, "fstat"); 34447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return NULL; 34547cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes } 34647cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return makeStructStat(env, sb); 34747cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes} 34847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes 34959fa7163774d6930a174bc038414a4b780581957Elliott Hughesstatic jobject Posix_fstatfs(JNIEnv* env, jobject, jobject javaFd) { 35059fa7163774d6930a174bc038414a4b780581957Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 35159fa7163774d6930a174bc038414a4b780581957Elliott Hughes struct statfs sb; 35259fa7163774d6930a174bc038414a4b780581957Elliott Hughes int rc = TEMP_FAILURE_RETRY(fstatfs(fd, &sb)); 35359fa7163774d6930a174bc038414a4b780581957Elliott Hughes if (rc == -1) { 35459fa7163774d6930a174bc038414a4b780581957Elliott Hughes throwErrnoException(env, "fstatfs"); 35559fa7163774d6930a174bc038414a4b780581957Elliott Hughes return NULL; 35659fa7163774d6930a174bc038414a4b780581957Elliott Hughes } 35759fa7163774d6930a174bc038414a4b780581957Elliott Hughes return makeStructStatFs(env, sb); 35859fa7163774d6930a174bc038414a4b780581957Elliott Hughes} 35959fa7163774d6930a174bc038414a4b780581957Elliott Hughes 36052724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughesstatic void Posix_fsync(JNIEnv* env, jobject, jobject javaFd) { 36152724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 3627e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwIfMinusOne(env, "fsync", TEMP_FAILURE_RETRY(fsync(fd))); 363f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes} 364f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes 365f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughesstatic void Posix_ftruncate(JNIEnv* env, jobject, jobject javaFd, jlong length) { 366f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 3677e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwIfMinusOne(env, "ftruncate", TEMP_FAILURE_RETRY(ftruncate64(fd, length))); 36852724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes} 36952724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes 3704f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughesstatic jstring Posix_gai_strerror(JNIEnv* env, jobject, jint error) { 3714f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes return env->NewStringUTF(gai_strerror(error)); 3724f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes} 3734f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes 374ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughesstatic jstring Posix_getenv(JNIEnv* env, jobject, jstring javaName) { 375ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes ScopedUtfChars name(env, javaName); 376ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes if (name.c_str() == NULL) { 377ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes return NULL; 378ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes } 379ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes return env->NewStringUTF(getenv(name.c_str())); 380ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes} 381ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes 3824f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughesstatic jstring Posix_getnameinfo(JNIEnv* env, jobject, jobject javaAddress, jint flags) { 3834f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes sockaddr_storage ss; 3844f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes if (!inetAddressToSocketAddress(env, javaAddress, 0, &ss)) { 3854f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes return NULL; 3864f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes } 3874f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // TODO: bionic's getnameinfo(3) seems to want its length parameter to be exactly 3884f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // sizeof(sockaddr_in) for an IPv4 address and sizeof (sockaddr_in6) for an 3894f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // IPv6 address. Fix getnameinfo so it accepts sizeof(sockaddr_storage), and 3904f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes // then remove this hack. 3914f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes socklen_t size = (ss.ss_family == AF_INET) ? sizeof(sockaddr_in) : sizeof(sockaddr_in6); 3924f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes char buf[NI_MAXHOST]; // NI_MAXHOST is longer than INET6_ADDRSTRLEN. 3934f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes int rc = getnameinfo(reinterpret_cast<sockaddr*>(&ss), size, buf, sizeof(buf), NULL, 0, flags); 3944f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes if (rc != 0) { 3954f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes throwGaiException(env, "getnameinfo", rc); 3964f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes return NULL; 3974f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes } 3984f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes return env->NewStringUTF(buf); 3994f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes} 4004f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes 4010a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject Posix_getsockname(JNIEnv* env, jobject, jobject javaFd) { 4020a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4030a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes sockaddr_storage ss; 4040a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes sockaddr* sa = reinterpret_cast<sockaddr*>(&ss); 4050a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t byteCount = sizeof(ss); 4060a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes memset(&ss, 0, byteCount); 4070a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int rc = TEMP_FAILURE_RETRY(getsockname(fd, sa, &byteCount)); 4080a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (rc == -1) { 4090a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwErrnoException(env, "getsockname"); 4100a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 4110a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 4120a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return makeSocketAddress(env, &ss); 4130a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4140a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4150a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jint Posix_getsockoptByte(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { 4160a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4170a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes u_char result = 0; 4180a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t size = sizeof(result); 4190a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwIfMinusOne(env, "getsockopt", TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &result, &size))); 4200a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return result; 4210a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4220a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4230a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject Posix_getsockoptInAddr(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { 4240a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4250a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes sockaddr_storage ss; 4260a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes memset(&ss, 0, sizeof(ss)); 4270a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes ss.ss_family = AF_INET; // This is only for the IPv4-only IP_MULTICAST_IF. 4280a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes sockaddr_in* sa = reinterpret_cast<sockaddr_in*>(&ss); 4290a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t size = sizeof(sa->sin_addr); 4300a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &sa->sin_addr, &size)); 4310a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (rc == -1) { 4320a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwErrnoException(env, "getsockopt"); 4330a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 4340a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 4350a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return socketAddressToInetAddress(env, &ss); 4360a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4370a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4380a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jint Posix_getsockoptInt(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { 4390a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4400a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes jint result = 0; 4410a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t size = sizeof(result); 4420a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwIfMinusOne(env, "getsockopt", TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &result, &size))); 4430a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return result; 4440a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4450a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4460a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject Posix_getsockoptLinger(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { 4470a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4480a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes struct linger l; 4490a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t size = sizeof(l); 4500a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes memset(&l, 0, size); 4510a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &l, &size)); 4520a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (rc == -1) { 4530a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwErrnoException(env, "getsockopt"); 4540a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 4550a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 4560a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return makeStructLinger(env, l); 4570a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4580a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4590a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughesstatic jobject Posix_getsockoptTimeval(JNIEnv* env, jobject, jobject javaFd, jint level, jint option) { 4600a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4610a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes struct timeval tv; 4620a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes socklen_t size = sizeof(tv); 4630a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes memset(&tv, 0, size); 4640a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes int rc = TEMP_FAILURE_RETRY(getsockopt(fd, level, option, &tv, &size)); 4650a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes if (rc == -1) { 4660a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes throwErrnoException(env, "getsockopt"); 4670a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return NULL; 4680a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes } 4690a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes return makeStructTimeval(env, tv); 4700a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes} 4710a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes 4728b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughesstatic jint Posix_ioctlInt(JNIEnv* env, jobject, jobject javaFd, jint cmd, jobject javaArg) { 4738b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes // This is complicated because ioctls may return their result by updating their argument 4748b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes // or via their return value, so we need to support both. 475461d0d860814c68154d8dd06d24f94118f33d28aElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4768b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes static jfieldID valueFid = env->GetFieldID(JniConstants::mutableIntClass, "value", "I"); 4778b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes jint arg = env->GetIntField(javaArg, valueFid); 4788b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes int rc = throwIfMinusOne(env, "ioctl", TEMP_FAILURE_RETRY(ioctl(fd, cmd, &arg))); 4798b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes if (!env->ExceptionCheck()) { 4808b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes env->SetIntField(javaArg, valueFid, arg); 4818b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes } 4828b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes return rc; 483461d0d860814c68154d8dd06d24f94118f33d28aElliott Hughes} 484461d0d860814c68154d8dd06d24f94118f33d28aElliott Hughes 4859a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughesstatic jboolean Posix_isatty(JNIEnv* env, jobject, jobject javaFd) { 4869a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4879a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughes return TEMP_FAILURE_RETRY(isatty(fd)) == 0; 4889a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughes} 4899a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughes 490e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughesstatic void Posix_listen(JNIEnv* env, jobject, jobject javaFd, jint backlog) { 491e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 492e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughes throwIfMinusOne(env, "listen", TEMP_FAILURE_RETRY(listen(fd, backlog))); 493e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughes} 494e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughes 495dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughesstatic jlong Posix_lseek(JNIEnv* env, jobject, jobject javaFd, jlong offset, jint whence) { 496dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 4977e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes return throwIfMinusOne(env, "lseek", TEMP_FAILURE_RETRY(lseek64(fd, offset, whence))); 498dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes} 499dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes 50047cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughesstatic jobject Posix_lstat(JNIEnv* env, jobject, jstring javaPath) { 50147cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return doStat(env, javaPath, true); 50247cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes} 50347cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes 5040f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughesstatic void Posix_mincore(JNIEnv* env, jobject, jlong address, jlong byteCount, jbyteArray javaVector) { 5050f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes ScopedByteArrayRW vector(env, javaVector); 5060f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes if (vector.get() == NULL) { 5070f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes return; 5080f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes } 5090f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5100f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes unsigned char* vec = reinterpret_cast<unsigned char*>(vector.get()); 5110f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes throwIfMinusOne(env, "mincore", TEMP_FAILURE_RETRY(mincore(ptr, byteCount, vec))); 5120f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes} 5130f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes 514c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughesstatic void Posix_mkdir(JNIEnv* env, jobject, jstring javaPath, jint mode) { 515c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes ScopedUtfChars path(env, javaPath); 516c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes if (path.c_str() == NULL) { 517c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes return; 518c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes } 519c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes throwIfMinusOne(env, "mkdir", TEMP_FAILURE_RETRY(mkdir(path.c_str(), mode))); 520c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes} 521c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes 5227e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughesstatic void Posix_mlock(JNIEnv* env, jobject, jlong address, jlong byteCount) { 5237e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5247e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes throwIfMinusOne(env, "mlock", TEMP_FAILURE_RETRY(mlock(ptr, byteCount))); 5257e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes} 5267e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes 5277e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughesstatic jlong Posix_mmap(JNIEnv* env, jobject, jlong address, jlong byteCount, jint prot, jint flags, jobject javaFd, jlong offset) { 5287e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 5297e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes void* suggestedPtr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5307e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes void* ptr = mmap(suggestedPtr, byteCount, prot, flags, fd, offset); 5317e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes if (ptr == MAP_FAILED) { 5327e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, "mmap"); 5337e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes } 5347e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes return static_cast<jlong>(reinterpret_cast<uintptr_t>(ptr)); 5357e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes} 5367e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes 5377e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughesstatic void Posix_msync(JNIEnv* env, jobject, jlong address, jlong byteCount, jint flags) { 5387e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5397e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwIfMinusOne(env, "msync", TEMP_FAILURE_RETRY(msync(ptr, byteCount, flags))); 5407e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes} 5417e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes 5427e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughesstatic void Posix_munlock(JNIEnv* env, jobject, jlong address, jlong byteCount) { 5437e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5447e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes throwIfMinusOne(env, "munlock", TEMP_FAILURE_RETRY(munlock(ptr, byteCount))); 5457e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes} 5467e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes 5477e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughesstatic void Posix_munmap(JNIEnv* env, jobject, jlong address, jlong byteCount) { 5487e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes void* ptr = reinterpret_cast<void*>(static_cast<uintptr_t>(address)); 5497e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwIfMinusOne(env, "munmap", TEMP_FAILURE_RETRY(munmap(ptr, byteCount))); 5507e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes} 5517e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes 5520ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughesstatic jobject Posix_open(JNIEnv* env, jobject, jstring javaPath, jint flags, jint mode) { 5530ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes ScopedUtfChars path(env, javaPath); 5540ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes if (path.c_str() == NULL) { 5550ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes return NULL; 5560ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes } 5570ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes int fd = throwIfMinusOne(env, "open", TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode))); 5580ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes return fd != -1 ? jniCreateFileDescriptor(env, fd) : NULL; 5590ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes} 5600ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes 56141f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughesstatic jobjectArray Posix_pipe(JNIEnv* env, jobject) { 56241f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes int fds[2]; 56341f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes throwIfMinusOne(env, "pipe", TEMP_FAILURE_RETRY(pipe(&fds[0]))); 56441f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes jobjectArray result = env->NewObjectArray(2, JniConstants::fileDescriptorClass, NULL); 56541f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes if (result == NULL) { 56641f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes return NULL; 56741f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes } 56841f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes for (int i = 0; i < 2; ++i) { 56941f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes ScopedLocalRef<jobject> fd(env, jniCreateFileDescriptor(env, fds[i])); 57041f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes if (fd.get() == NULL) { 57141f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes return NULL; 57241f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes } 57341f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes env->SetObjectArrayElement(result, i, fd.get()); 57441f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes if (env->ExceptionCheck()) { 57541f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes return NULL; 57641f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes } 57741f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes } 57841f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes return result; 57941f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes} 58041f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes 58126c7025a7a919044771fb89031161bd26fe03032Elliott Hughesstatic jint Posix_read(JNIEnv* env, jobject, jobject javaFd, jbyteArray javaBytes, jint byteOffset, jint byteCount) { 58226c7025a7a919044771fb89031161bd26fe03032Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 58326c7025a7a919044771fb89031161bd26fe03032Elliott Hughes ScopedByteArrayRW bytes(env, javaBytes); 58426c7025a7a919044771fb89031161bd26fe03032Elliott Hughes if (bytes.get() == NULL) { 58526c7025a7a919044771fb89031161bd26fe03032Elliott Hughes return -1; 58626c7025a7a919044771fb89031161bd26fe03032Elliott Hughes } 58726c7025a7a919044771fb89031161bd26fe03032Elliott Hughes return throwIfMinusOne(env, "read", TEMP_FAILURE_RETRY(read(fd, bytes.get() + byteOffset, byteCount))); 58826c7025a7a919044771fb89031161bd26fe03032Elliott Hughes} 58926c7025a7a919044771fb89031161bd26fe03032Elliott Hughes 59026c7025a7a919044771fb89031161bd26fe03032Elliott Hughesstatic jint Posix_readDirectBuffer(JNIEnv* env, jobject, jobject javaFd, jobject byteBuffer, jint position, jint remaining) { 59126c7025a7a919044771fb89031161bd26fe03032Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 59226c7025a7a919044771fb89031161bd26fe03032Elliott Hughes jbyte* ptr = reinterpret_cast<jbyte*>(env->GetDirectBufferAddress(byteBuffer)); 59326c7025a7a919044771fb89031161bd26fe03032Elliott Hughes return throwIfMinusOne(env, "read", TEMP_FAILURE_RETRY(read(fd, ptr + position, remaining))); 59426c7025a7a919044771fb89031161bd26fe03032Elliott Hughes} 59526c7025a7a919044771fb89031161bd26fe03032Elliott Hughes 596bbac92e691de7d570928ddfba639067978e55b06Elliott Hughesstatic jint Posix_readv(JNIEnv* env, jobject, jobject javaFd, jobjectArray buffers, jintArray offsets, jintArray byteCounts) { 597bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes IoVec<ScopedByteArrayRW> ioVec(env, env->GetArrayLength(buffers)); 598bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (!ioVec.init(buffers, offsets, byteCounts)) { 599bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return -1; 600bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 601bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 602bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return throwIfMinusOne(env, "readv", TEMP_FAILURE_RETRY(readv(fd, ioVec.get(), ioVec.size()))); 603bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes} 604bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 605c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughesstatic void Posix_remove(JNIEnv* env, jobject, jstring javaPath) { 606c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes ScopedUtfChars path(env, javaPath); 607c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes if (path.c_str() == NULL) { 608c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes return; 609c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes } 610c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes throwIfMinusOne(env, "remove", TEMP_FAILURE_RETRY(remove(path.c_str()))); 611c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes} 612c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes 613a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughesstatic void Posix_rename(JNIEnv* env, jobject, jstring javaOldPath, jstring javaNewPath) { 614a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes ScopedUtfChars oldPath(env, javaOldPath); 615a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes if (oldPath.c_str() == NULL) { 616a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes return; 617a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes } 618a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes ScopedUtfChars newPath(env, javaNewPath); 619a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes if (newPath.c_str() == NULL) { 620a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes return; 621a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes } 622a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes throwIfMinusOne(env, "rename", TEMP_FAILURE_RETRY(rename(oldPath.c_str(), newPath.c_str()))); 623a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes} 624a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes 6258b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughesstatic jlong Posix_sendfile(JNIEnv* env, jobject, jobject javaOutFd, jobject javaInFd, jobject javaOffset, jlong byteCount) { 6268b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes int outFd = jniGetFDFromFileDescriptor(env, javaOutFd); 6278b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes int inFd = jniGetFDFromFileDescriptor(env, javaInFd); 6288b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes static jfieldID valueFid = env->GetFieldID(JniConstants::mutableLongClass, "value", "J"); 6298b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes off_t offset = 0; 6308b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes off_t* offsetPtr = NULL; 6318b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes if (javaOffset != NULL) { 6328b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes // TODO: fix bionic so we can have a 64-bit off_t! 6338b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes offset = env->GetLongField(javaOffset, valueFid); 6348b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes offsetPtr = &offset; 6358b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes } 6368b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes jlong result = throwIfMinusOne(env, "sendfile", TEMP_FAILURE_RETRY(sendfile(outFd, inFd, offsetPtr, byteCount))); 6378b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes if (javaOffset != NULL) { 6388b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes env->SetLongField(javaOffset, valueFid, offset); 6398b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes } 6408b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes return result; 6418b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes} 6428b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes 643c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughesstatic void Posix_setsockoptByte(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { 644c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 645c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes u_char byte = value; 646c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &byte, sizeof(byte)))); 647c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes} 648c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes 649b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughesstatic void Posix_setsockoptIfreq(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jstring value) { 650b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes ScopedUtfChars interfaceName(env, value); 651b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes if (interfaceName.c_str() == NULL) { 652b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes return; 653b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes } 654b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes struct ifreq req; 655b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes memset(&req, 0, sizeof(req)); 656b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes strncpy(req.ifr_name, interfaceName.c_str(), sizeof(req.ifr_name)); 657b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes req.ifr_name[sizeof(req.ifr_name) - 1] = '\0'; 658b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 659b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req, sizeof(req)))); 660b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes} 661b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes 662454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughesstatic void Posix_setsockoptInt(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { 663454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 664454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); 665454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes} 666454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes 667b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughesstatic void Posix_setsockoptIpMreqn(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jint value) { 668b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes ip_mreqn req; 669b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes memset(&req, 0, sizeof(req)); 670b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes req.imr_ifindex = value; 671b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 672b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &req, sizeof(req)))); 673b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes} 674b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes 675438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughesstatic void Posix_setsockoptGroupReq(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaGroupReq) { 676438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes struct group_req value; 677438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes 678438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes static jfieldID grInterfaceFid = env->GetFieldID(JniConstants::structGroupReqClass, "gr_interface", "I"); 679438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes value.gr_interface = env->GetIntField(javaGroupReq, grInterfaceFid); 680438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes // Get the IPv4 or IPv6 multicast address to join or leave. 681438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes static jfieldID grGroupFid = env->GetFieldID(JniConstants::structGroupReqClass, "gr_group", "Ljava/net/InetAddress;"); 682438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes jobject javaGroup = env->GetObjectField(javaGroupReq, grGroupFid); 683438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes if (!inetAddressToSocketAddress(env, javaGroup, 0, &value.gr_group)) { 684438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes return; 685438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes } 686438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes 687438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 688438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes int rc = TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value))); 689438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes if (rc == -1 && errno == EINVAL) { 690438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes // Maybe we're a 32-bit binary talking to a 64-bit kernel? 691438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes // glibc doesn't automatically handle this. 692438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes struct GCC_HIDDEN group_req64 { 693438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes uint32_t gr_interface; 694438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes uint32_t my_padding; 695438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes sockaddr_storage gr_group; 696438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes }; 697438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes group_req64 value64; 698438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes value64.gr_interface = value.gr_interface; 699438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes memcpy(&value64.gr_group, &value.gr_group, sizeof(value.gr_group)); 700438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes rc = TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value64, sizeof(value64))); 701438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes } 702438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes throwIfMinusOne(env, "setsockopt", rc); 703438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes} 704438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes 705c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughesstatic void Posix_setsockoptLinger(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaLinger) { 706c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes static jfieldID lOnoffFid = env->GetFieldID(JniConstants::structLingerClass, "l_onoff", "I"); 707c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes static jfieldID lLingerFid = env->GetFieldID(JniConstants::structLingerClass, "l_linger", "I"); 708c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 709c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes struct linger value; 710c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes value.l_onoff = env->GetIntField(javaLinger, lOnoffFid); 711c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes value.l_linger = env->GetIntField(javaLinger, lLingerFid); 712c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); 713c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes} 714c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes 715c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughesstatic void Posix_setsockoptTimeval(JNIEnv* env, jobject, jobject javaFd, jint level, jint option, jobject javaTimeval) { 716c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes static jfieldID tvSecFid = env->GetFieldID(JniConstants::structTimevalClass, "tv_sec", "J"); 717c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes static jfieldID tvUsecFid = env->GetFieldID(JniConstants::structTimevalClass, "tv_usec", "J"); 718c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 719c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes struct timeval value; 720c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes value.tv_sec = env->GetIntField(javaTimeval, tvSecFid); 721c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes value.tv_usec = env->GetIntField(javaTimeval, tvUsecFid); 722c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes throwIfMinusOne(env, "setsockopt", TEMP_FAILURE_RETRY(setsockopt(fd, level, option, &value, sizeof(value)))); 723c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes} 724c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes 72559e4744d27231f260271dbbca406e0cc39768116Elliott Hughesstatic void Posix_shutdown(JNIEnv* env, jobject, jobject javaFd, jint how) { 72659e4744d27231f260271dbbca406e0cc39768116Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 72759e4744d27231f260271dbbca406e0cc39768116Elliott Hughes throwIfMinusOne(env, "shutdown", TEMP_FAILURE_RETRY(shutdown(fd, how))); 72859e4744d27231f260271dbbca406e0cc39768116Elliott Hughes} 72959e4744d27231f260271dbbca406e0cc39768116Elliott Hughes 730454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughesstatic jobject Posix_socket(JNIEnv* env, jobject, jint domain, jint type, jint protocol) { 731454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes int fd = throwIfMinusOne(env, "socket", TEMP_FAILURE_RETRY(socket(domain, type, protocol))); 732454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes return fd != -1 ? jniCreateFileDescriptor(env, fd) : NULL; 733454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes} 734454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes 73547cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughesstatic jobject Posix_stat(JNIEnv* env, jobject, jstring javaPath) { 73647cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes return doStat(env, javaPath, false); 73747cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes} 73847cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes 7390ade5524d972b9dfd69b0126aa4c35319c1b7fa4Elliott Hughesstatic jobject Posix_statfs(JNIEnv* env, jobject, jstring javaPath) { 74059fa7163774d6930a174bc038414a4b780581957Elliott Hughes ScopedUtfChars path(env, javaPath); 74159fa7163774d6930a174bc038414a4b780581957Elliott Hughes if (path.c_str() == NULL) { 74259fa7163774d6930a174bc038414a4b780581957Elliott Hughes return NULL; 74359fa7163774d6930a174bc038414a4b780581957Elliott Hughes } 74459fa7163774d6930a174bc038414a4b780581957Elliott Hughes struct statfs sb; 74559fa7163774d6930a174bc038414a4b780581957Elliott Hughes int rc = TEMP_FAILURE_RETRY(statfs(path.c_str(), &sb)); 74659fa7163774d6930a174bc038414a4b780581957Elliott Hughes if (rc == -1) { 74759fa7163774d6930a174bc038414a4b780581957Elliott Hughes throwErrnoException(env, "statfs"); 74859fa7163774d6930a174bc038414a4b780581957Elliott Hughes return NULL; 74959fa7163774d6930a174bc038414a4b780581957Elliott Hughes } 75059fa7163774d6930a174bc038414a4b780581957Elliott Hughes return makeStructStatFs(env, sb); 75159fa7163774d6930a174bc038414a4b780581957Elliott Hughes} 75259fa7163774d6930a174bc038414a4b780581957Elliott Hughes 753ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughesstatic jstring Posix_strerror(JNIEnv* env, jobject, jint errnum) { 75452724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes char buffer[BUFSIZ]; 755ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes const char* message = jniStrError(errnum, buffer, sizeof(buffer)); 756ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes return env->NewStringUTF(message); 757ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes} 758ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes 759a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughesstatic void Posix_symlink(JNIEnv* env, jobject, jstring javaOldPath, jstring javaNewPath) { 760a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes ScopedUtfChars oldPath(env, javaOldPath); 761a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes if (oldPath.c_str() == NULL) { 762a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes return; 763a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes } 764a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes ScopedUtfChars newPath(env, javaNewPath); 765a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes if (newPath.c_str() == NULL) { 766a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes return; 767a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes } 768a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes throwIfMinusOne(env, "symlink", TEMP_FAILURE_RETRY(symlink(oldPath.c_str(), newPath.c_str()))); 769a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes} 770a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes 7716fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughesstatic jlong Posix_sysconf(JNIEnv* env, jobject, jint name) { 7726fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes // Since -1 is a valid result from sysconf(3), detecting failure is a little more awkward. 7736fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes errno = 0; 7746fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes long result = sysconf(name); 7756fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes if (result == -1L && errno == EINVAL) { 7767e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes throwErrnoException(env, "sysconf"); 7776fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes } 7786fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes return result; 7796fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes} 7806fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes 7817341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughesstatic jobject Posix_uname(JNIEnv* env, jobject) { 7827341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes struct utsname buf; 7837341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes if (throwIfMinusOne(env, "uname", TEMP_FAILURE_RETRY(uname(&buf))) == -1) { 7847341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes return NULL; 7857341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes } 7867341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes return makeStructUtsname(env, buf); 7877341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes} 7887341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes 78978c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughesstatic jint Posix_write(JNIEnv* env, jobject, jobject javaFd, jbyteArray javaBytes, jint byteOffset, jint byteCount) { 79078c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 79178c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes ScopedByteArrayRO bytes(env, javaBytes); 79278c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes if (bytes.get() == NULL) { 79378c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes return -1; 79478c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes } 79578c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes return throwIfMinusOne(env, "write", TEMP_FAILURE_RETRY(write(fd, bytes.get() + byteOffset, byteCount))); 79678c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes} 79778c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes 79878c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughesstatic jint Posix_writeDirectBuffer(JNIEnv* env, jobject, jobject javaFd, jobject byteBuffer, jint position, jint remaining) { 79978c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 80078c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes jbyte* ptr = reinterpret_cast<jbyte*>(env->GetDirectBufferAddress(byteBuffer)); 80178c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes return throwIfMinusOne(env, "write", TEMP_FAILURE_RETRY(write(fd, ptr + position, remaining))); 80278c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes} 80378c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes 804bbac92e691de7d570928ddfba639067978e55b06Elliott Hughesstatic jint Posix_writev(JNIEnv* env, jobject, jobject javaFd, jobjectArray buffers, jintArray offsets, jintArray byteCounts) { 805bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes IoVec<ScopedByteArrayRO> ioVec(env, env->GetArrayLength(buffers)); 806bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes if (!ioVec.init(buffers, offsets, byteCounts)) { 807bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return -1; 808bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes } 809bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes int fd = jniGetFDFromFileDescriptor(env, javaFd); 810bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes return throwIfMinusOne(env, "writev", TEMP_FAILURE_RETRY(writev(fd, ioVec.get(), ioVec.size()))); 811bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes} 812bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes 813ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughesstatic JNINativeMethod gMethods[] = { 814ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes NATIVE_METHOD(Posix, access, "(Ljava/lang/String;I)Z"), 815b7190190e0ef8de883c952efb319ce7748831faaElliott Hughes NATIVE_METHOD(Posix, chmod, "(Ljava/lang/String;I)V"), 816462bdac45c10f43d88d8f07f6994e272a27c14a2Elliott Hughes NATIVE_METHOD(Posix, close, "(Ljava/io/FileDescriptor;)V"), 817ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes NATIVE_METHOD(Posix, environ, "()[Ljava/lang/String;"), 818fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes NATIVE_METHOD(Posix, fcntlVoid, "(Ljava/io/FileDescriptor;I)I"), 819fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes NATIVE_METHOD(Posix, fcntlLong, "(Ljava/io/FileDescriptor;IJ)I"), 820fc549a0b0388987b26dea524894d75a63d14783bElliott Hughes NATIVE_METHOD(Posix, fcntlFlock, "(Ljava/io/FileDescriptor;ILlibcore/io/StructFlock;)I"), 82152724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes NATIVE_METHOD(Posix, fdatasync, "(Ljava/io/FileDescriptor;)V"), 82247cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes NATIVE_METHOD(Posix, fstat, "(Ljava/io/FileDescriptor;)Llibcore/io/StructStat;"), 82359fa7163774d6930a174bc038414a4b780581957Elliott Hughes NATIVE_METHOD(Posix, fstatfs, "(Ljava/io/FileDescriptor;)Llibcore/io/StructStatFs;"), 82452724d3ebd4ccaaa4b9f5576e329d4272cde8ea9Elliott Hughes NATIVE_METHOD(Posix, fsync, "(Ljava/io/FileDescriptor;)V"), 825f5333fd2094bdac4d6506177b1964b79afa64d77Elliott Hughes NATIVE_METHOD(Posix, ftruncate, "(Ljava/io/FileDescriptor;J)V"), 8264f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes NATIVE_METHOD(Posix, gai_strerror, "(I)Ljava/lang/String;"), 827ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes NATIVE_METHOD(Posix, getenv, "(Ljava/lang/String;)Ljava/lang/String;"), 8284f11ebea266eada830d507b8f011e811a8e5d7bcElliott Hughes NATIVE_METHOD(Posix, getnameinfo, "(Ljava/net/InetAddress;I)Ljava/lang/String;"), 8290a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockname, "(Ljava/io/FileDescriptor;)Ljava/net/SocketAddress;"), 8300a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockoptByte, "(Ljava/io/FileDescriptor;II)I"), 8310a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockoptInAddr, "(Ljava/io/FileDescriptor;II)Ljava/net/InetAddress;"), 8320a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockoptInt, "(Ljava/io/FileDescriptor;II)I"), 8330a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockoptLinger, "(Ljava/io/FileDescriptor;II)Llibcore/io/StructLinger;"), 8340a9d1ee45a9884a9616624d747172e18734e8fe0Elliott Hughes NATIVE_METHOD(Posix, getsockoptTimeval, "(Ljava/io/FileDescriptor;II)Llibcore/io/StructTimeval;"), 8358b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes NATIVE_METHOD(Posix, ioctlInt, "(Ljava/io/FileDescriptor;ILlibcore/util/MutableInt;)I"), 8369a3f363523000704205df288f8b6f2f48c0d8563Elliott Hughes NATIVE_METHOD(Posix, isatty, "(Ljava/io/FileDescriptor;)Z"), 837e1502d64e937001636fca3d62b2552ef2a34d05fElliott Hughes NATIVE_METHOD(Posix, listen, "(Ljava/io/FileDescriptor;I)V"), 838dedaccdfa07c370a58cba08b096133ad9eec0ec3Elliott Hughes NATIVE_METHOD(Posix, lseek, "(Ljava/io/FileDescriptor;JI)J"), 83947cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes NATIVE_METHOD(Posix, lstat, "(Ljava/lang/String;)Llibcore/io/StructStat;"), 8400f746ff511162add42eeabaf14ba70ace874c6f4Elliott Hughes NATIVE_METHOD(Posix, mincore, "(JJ[B)V"), 841c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes NATIVE_METHOD(Posix, mkdir, "(Ljava/lang/String;I)V"), 8427e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes NATIVE_METHOD(Posix, mlock, "(JJ)V"), 8437e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes NATIVE_METHOD(Posix, mmap, "(JJIILjava/io/FileDescriptor;J)J"), 8447e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes NATIVE_METHOD(Posix, msync, "(JJI)V"), 8457e13c0f05ac9e7c55682d10e953dd4cbd5e6107cElliott Hughes NATIVE_METHOD(Posix, munlock, "(JJ)V"), 8467e25eff38a191d9c19e45093f4fde5102fb09d78Elliott Hughes NATIVE_METHOD(Posix, munmap, "(JJ)V"), 8470ac77ac8e915bff1a863e371f9b363033f9cf759Elliott Hughes NATIVE_METHOD(Posix, open, "(Ljava/lang/String;II)Ljava/io/FileDescriptor;"), 84841f0605d2c809bd9bc1c0fb68d86b49a0f59b6c5Elliott Hughes NATIVE_METHOD(Posix, pipe, "()[Ljava/io/FileDescriptor;"), 84926c7025a7a919044771fb89031161bd26fe03032Elliott Hughes NATIVE_METHOD(Posix, read, "(Ljava/io/FileDescriptor;[BII)I"), 85026c7025a7a919044771fb89031161bd26fe03032Elliott Hughes NATIVE_METHOD(Posix, readDirectBuffer, "(Ljava/io/FileDescriptor;Ljava/nio/ByteBuffer;II)I"), 851bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes NATIVE_METHOD(Posix, readv, "(Ljava/io/FileDescriptor;[Ljava/lang/Object;[I[I)I"), 852c7fa20701d5e9398c38f4615ed293acfce1c0cf6Elliott Hughes NATIVE_METHOD(Posix, remove, "(Ljava/lang/String;)V"), 853a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes NATIVE_METHOD(Posix, rename, "(Ljava/lang/String;Ljava/lang/String;)V"), 8548b15dcc5890963edad4dfcf558cc16027c7985e5Elliott Hughes NATIVE_METHOD(Posix, sendfile, "(Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;Llibcore/util/MutableLong;J)J"), 855c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes NATIVE_METHOD(Posix, setsockoptByte, "(Ljava/io/FileDescriptor;III)V"), 856b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes NATIVE_METHOD(Posix, setsockoptIfreq, "(Ljava/io/FileDescriptor;IILjava/lang/String;)V"), 857454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes NATIVE_METHOD(Posix, setsockoptInt, "(Ljava/io/FileDescriptor;III)V"), 858b974666d79ebc392b37ec1ae83aae57ae6331c08Elliott Hughes NATIVE_METHOD(Posix, setsockoptIpMreqn, "(Ljava/io/FileDescriptor;III)V"), 859438cb9e440d250c8aa5daf4fae0c400dce8b1499Elliott Hughes NATIVE_METHOD(Posix, setsockoptGroupReq, "(Ljava/io/FileDescriptor;IILlibcore/io/StructGroupReq;)V"), 860c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes NATIVE_METHOD(Posix, setsockoptLinger, "(Ljava/io/FileDescriptor;IILlibcore/io/StructLinger;)V"), 861c63f0d4e80a9fd3bdf99cd438d108b750226736aElliott Hughes NATIVE_METHOD(Posix, setsockoptTimeval, "(Ljava/io/FileDescriptor;IILlibcore/io/StructTimeval;)V"), 86259e4744d27231f260271dbbca406e0cc39768116Elliott Hughes NATIVE_METHOD(Posix, shutdown, "(Ljava/io/FileDescriptor;I)V"), 863454a95f6a28855aa3c88d168b15a45bf315efc99Elliott Hughes NATIVE_METHOD(Posix, socket, "(III)Ljava/io/FileDescriptor;"), 86447cb338d43f75dd998b29caaaa9446c5705217d1Elliott Hughes NATIVE_METHOD(Posix, stat, "(Ljava/lang/String;)Llibcore/io/StructStat;"), 86559fa7163774d6930a174bc038414a4b780581957Elliott Hughes NATIVE_METHOD(Posix, statfs, "(Ljava/lang/String;)Llibcore/io/StructStatFs;"), 866ddfdbb9d172fe9b72e08e8d7deab0aa3b8acf044Elliott Hughes NATIVE_METHOD(Posix, strerror, "(I)Ljava/lang/String;"), 867a20cc6fca30d18e05db67ceeb0403b7b58ffd364Elliott Hughes NATIVE_METHOD(Posix, symlink, "(Ljava/lang/String;Ljava/lang/String;)V"), 8686fc1a0e1e68dc2e0d12341548e58fa7f1c5dafc4Elliott Hughes NATIVE_METHOD(Posix, sysconf, "(I)J"), 8697341b9ed7157a1e37a3e69a0974676da358b735aElliott Hughes NATIVE_METHOD(Posix, uname, "()Llibcore/io/StructUtsname;"), 87078c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes NATIVE_METHOD(Posix, write, "(Ljava/io/FileDescriptor;[BII)I"), 87178c7cc547101002b9f9043cf3845970719d1bda8Elliott Hughes NATIVE_METHOD(Posix, writeDirectBuffer, "(Ljava/io/FileDescriptor;Ljava/nio/ByteBuffer;II)I"), 872bbac92e691de7d570928ddfba639067978e55b06Elliott Hughes NATIVE_METHOD(Posix, writev, "(Ljava/io/FileDescriptor;[Ljava/lang/Object;[I[I)I"), 873ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes}; 874ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughesint register_libcore_io_Posix(JNIEnv* env) { 875ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes return jniRegisterNativeMethods(env, "libcore/io/Posix", gMethods, NELEM(gMethods)); 876ec617e2cb4a374f0fd8fbda4a633214cf23a59a9Elliott Hughes} 877