JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcherImpl_read0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len)
{
DWORD read = 0;
BOOL result = 0;
HANDLE h = (HANDLE)(handleval(env, fdo));
if (h == INVALID_HANDLE_VALUE) {
JNU_ThrowIOExceptionWithLastError(env, "Invalid handle");
return IOS_THROWN;
}
result = ReadFile(h, /* File handle to read */
(LPVOID)address, /* address to put data */
len, /* number of bytes to read */
&read, /* number of bytes read */
NULL); /* no overlapped struct */
if (result == 0) {
int error = GetLastError();
if (error == ERROR_BROKEN_PIPE) {
return IOS_EOF;
}
if (error == ERROR_NO_DATA) {
return IOS_UNAVAILABLE;
}
JNU_ThrowIOExceptionWithLastError(env, "Read failed");
return IOS_THROWN;
}
return convertReturnVal(env, (jint)read, JNI_TRUE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcherImpl_write0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len, jboolean append)
{
BOOL result = 0;
DWORD written = 0;
HANDLE h = (HANDLE)(handleval(env, fdo));
if (h != INVALID_HANDLE_VALUE) {
OVERLAPPED ov;
LPOVERLAPPED lpOv;
if (append == JNI_TRUE) {
ov.Offset = (DWORD)0xFFFFFFFF;
ov.OffsetHigh = (DWORD)0xFFFFFFFF;
ov.hEvent = NULL;
lpOv = &ov;
} else {
lpOv = NULL;
}
result = WriteFile(h, /* File handle to write */
(LPCVOID)address, /* pointers to the buffers */
len, /* number of bytes to write */
&written, /* receives number of bytes written */
lpOv); /* overlapped struct */
}
if ((h == INVALID_HANDLE_VALUE) || (result == 0)) {
JNU_ThrowIOExceptionWithLastError(env, "Write failed");
}
return convertReturnVal(env, (jint)written, JNI_FALSE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcher_pwrite0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len, jlong offset)
{
jint fd = fdval(env, fdo);
void *buf = (void *)jlong_to_ptr(address);
return convertReturnVal(env, pwrite64(fd, buf, len, offset), JNI_FALSE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcher_read0(JNIEnv *env, jclass clazz,
jobject fdo, jlong address, jint len)
{
jint fd = fdval(env, fdo);
void *buf = (void *)jlong_to_ptr(address);
return convertReturnVal(env, read(fd, buf, len), JNI_TRUE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_DatagramDispatcher_write0(JNIEnv *env, jclass clazz,
jobject fdo, jlong address, jint len)
{
jint fd = fdval(env, fdo);
void *buf = (void *)jlong_to_ptr(address);
int result = send(fd, buf, len, 0);
if (result < 0 && errno == ECONNREFUSED) {
JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
return -2;
}
return convertReturnVal(env, result, JNI_FALSE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcherImpl_pwrite0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len, jlong offset)
{
BOOL result = 0;
DWORD written = 0;
HANDLE h = (HANDLE)(handleval(env, fdo));
DWORD lowPos = 0;
long highPos = 0;
DWORD lowOffset = 0;
long highOffset = 0;
lowPos = SetFilePointer(h, 0, &highPos, FILE_CURRENT);
if (lowPos == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
lowOffset = (DWORD)offset;
highOffset = (DWORD)(offset >> 32);
lowOffset = SetFilePointer(h, lowOffset, &highOffset, FILE_BEGIN);
if (lowOffset == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
result = WriteFile(h, /* File handle to write */
(LPCVOID)address, /* pointers to the buffers */
len, /* number of bytes to write */
&written, /* receives number of bytes written */
NULL); /* no overlapped struct */
if ((h == INVALID_HANDLE_VALUE) || (result == 0)) {
JNU_ThrowIOExceptionWithLastError(env, "Write failed");
return IOS_THROWN;
}
lowPos = SetFilePointer(h, lowPos, &highPos, FILE_BEGIN);
if (lowPos == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
return convertReturnVal(env, (jint)written, JNI_FALSE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_DatagramDispatcher_read0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len)
{
/* set up */
int i = 0;
DWORD read = 0;
DWORD flags = 0;
jint fd = fdval(env, fdo);
WSABUF buf;
/* destination buffer and size */
buf.buf = (char *)address;
buf.len = (u_long)len;
/* read into the buffers */
i = WSARecv((SOCKET)fd, /* Socket */
&buf, /* pointers to the buffers */
(DWORD)1, /* number of buffers to process */
&read, /* receives number of bytes read */
&flags, /* no flags */
0, /* no overlapped sockets */
0); /* no completion routine */
if (i == SOCKET_ERROR) {
int theErr = (jint)WSAGetLastError();
if (theErr == WSAEWOULDBLOCK) {
return IOS_UNAVAILABLE;
}
if (theErr == WSAECONNRESET) {
purgeOutstandingICMP(env, clazz, fd);
JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
return IOS_THROWN;
}
JNU_ThrowIOExceptionWithLastError(env, "Write failed");
return IOS_THROWN;
}
return convertReturnVal(env, (jint)read, JNI_TRUE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_SocketDispatcher_read0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len)
{
/* set up */
int i = 0;
DWORD read = 0;
DWORD flags = 0;
jint fd = fdval(env, fdo);
WSABUF buf;
/* limit size */
if (len > MAX_BUFFER_SIZE)
len = MAX_BUFFER_SIZE;
/* destination buffer and size */
buf.buf = (char *)address;
buf.len = (u_long)len;
/* read into the buffers */
i = WSARecv((SOCKET)fd, /* Socket */
&buf, /* pointers to the buffers */
(DWORD)1, /* number of buffers to process */
&read, /* receives number of bytes read */
&flags, /* no flags */
0, /* no overlapped sockets */
0); /* no completion routine */
if (i == SOCKET_ERROR) {
int theErr = (jint)WSAGetLastError();
if (theErr == WSAEWOULDBLOCK) {
return IOS_UNAVAILABLE;
}
JNU_ThrowIOExceptionWithLastError(env, "Read failed");
return IOS_THROWN;
}
return convertReturnVal(env, (jint)read, JNI_TRUE);
}
JNIEXPORT jint JNICALL
Java_sun_nio_ch_FileDispatcherImpl_pread0(JNIEnv *env, jclass clazz, jobject fdo,
jlong address, jint len, jlong offset)
{
DWORD read = 0;
BOOL result = 0;
HANDLE h = (HANDLE)(handleval(env, fdo));
DWORD lowPos = 0;
long highPos = 0;
DWORD lowOffset = 0;
long highOffset = 0;
if (h == INVALID_HANDLE_VALUE) {
JNU_ThrowIOExceptionWithLastError(env, "Invalid handle");
return IOS_THROWN;
}
lowPos = SetFilePointer(h, 0, &highPos, FILE_CURRENT);
if (lowPos == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
lowOffset = (DWORD)offset;
highOffset = (DWORD)(offset >> 32);
lowOffset = SetFilePointer(h, lowOffset, &highOffset, FILE_BEGIN);
if (lowOffset == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
result = ReadFile(h, /* File handle to read */
(LPVOID)address, /* address to put data */
len, /* number of bytes to read */
&read, /* number of bytes read */
NULL); /* struct with offset */
if (result == 0) {
int error = GetLastError();
if (error == ERROR_BROKEN_PIPE) {
return IOS_EOF;
}
if (error == ERROR_NO_DATA) {
return IOS_UNAVAILABLE;
}
JNU_ThrowIOExceptionWithLastError(env, "Read failed");
return IOS_THROWN;
}
lowPos = SetFilePointer(h, lowPos, &highPos, FILE_BEGIN);
if (lowPos == ((DWORD)-1)) {
if (GetLastError() != ERROR_SUCCESS) {
JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
return IOS_THROWN;
}
}
return convertReturnVal(env, (jint)read, JNI_TRUE);
}
