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Commit 888d66a2 authored by Alexandre Julliard's avatar Alexandre Julliard
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ntdll: Move the file read/write functions to the Unix library.

Signed-off-by: 's avatarAlexandre Julliard <julliard@winehq.org>
parent e9e5c950
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Showing with 1104 additions and 949 deletions
dlls/ntdll/file.c
View file @ 888d66a2
......@@ -339,296 +339,6 @@ NTSTATUS FILE_GetNtStatus(void)
}
}
/***********************************************************************
* FILE_AsyncReadService (INTERNAL)
*/
static NTSTATUS FILE_AsyncReadService( void *user, IO_STATUS_BLOCK *iosb, NTSTATUS status )
{
struct async_fileio_read *fileio = user;
int fd, needs_close, result;
switch (status)
{
case STATUS_ALERTED: /* got some new data */
/* check to see if the data is ready (non-blocking) */
if ((status = unix_funcs->server_get_unix_fd( fileio->io.handle, FILE_READ_DATA, &fd,
&needs_close, NULL, NULL )))
break;
result = unix_funcs->virtual_locked_read(fd, &fileio->buffer[fileio->already], fileio->count-fileio->already);
if (needs_close) close( fd );
if (result < 0)
{
if (errno == EAGAIN || errno == EINTR)
status = STATUS_PENDING;
else /* check to see if the transfer is complete */
status = FILE_GetNtStatus();
}
else if (result == 0)
{
status = fileio->already ? STATUS_SUCCESS : STATUS_PIPE_BROKEN;
}
else
{
fileio->already += result;
if (fileio->already >= fileio->count || fileio->avail_mode)
status = STATUS_SUCCESS;
else
status = STATUS_PENDING;
}
break;
case STATUS_TIMEOUT:
case STATUS_IO_TIMEOUT:
if (fileio->already) status = STATUS_SUCCESS;
break;
}
if (status != STATUS_PENDING)
{
iosb->u.Status = status;
iosb->Information = fileio->already;
release_fileio( &fileio->io );
}
return status;
}
/* do a read call through the server */
static NTSTATUS server_read_file( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_context,
IO_STATUS_BLOCK *io, void *buffer, ULONG size,
LARGE_INTEGER *offset, ULONG *key )
{
struct async_irp *async;
NTSTATUS status;
HANDLE wait_handle;
ULONG options;
if (!(async = (struct async_irp *)alloc_fileio( sizeof(*async), irp_completion, handle )))
return STATUS_NO_MEMORY;
async->buffer = buffer;
async->size = size;
SERVER_START_REQ( read )
{
req->async = server_async( handle, &async->io, event, apc, apc_context, io );
req->pos = offset ? offset->QuadPart : 0;
wine_server_set_reply( req, buffer, size );
status = unix_funcs->virtual_locked_server_call( req );
wait_handle = wine_server_ptr_handle( reply->wait );
options = reply->options;
if (wait_handle && status != STATUS_PENDING)
{
io->u.Status = status;
io->Information = wine_server_reply_size( reply );
}
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, async );
if (wait_handle) status = wait_async( wait_handle, (options & FILE_SYNCHRONOUS_IO_ALERT), io );
return status;
}
/* do a write call through the server */
static NTSTATUS server_write_file( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_context,
IO_STATUS_BLOCK *io, const void *buffer, ULONG size,
LARGE_INTEGER *offset, ULONG *key )
{
struct async_irp *async;
NTSTATUS status;
HANDLE wait_handle;
ULONG options;
if (!(async = (struct async_irp *)alloc_fileio( sizeof(*async), irp_completion, handle )))
return STATUS_NO_MEMORY;
async->buffer = NULL;
async->size = 0;
SERVER_START_REQ( write )
{
req->async = server_async( handle, &async->io, event, apc, apc_context, io );
req->pos = offset ? offset->QuadPart : 0;
wine_server_add_data( req, buffer, size );
status = wine_server_call( req );
wait_handle = wine_server_ptr_handle( reply->wait );
options = reply->options;
if (wait_handle && status != STATUS_PENDING)
{
io->u.Status = status;
io->Information = reply->size;
}
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, async );
if (wait_handle) status = wait_async( wait_handle, (options & FILE_SYNCHRONOUS_IO_ALERT), io );
return status;
}
struct io_timeouts
{
int interval; /* max interval between two bytes */
int total; /* total timeout for the whole operation */
int end_time; /* absolute time of end of operation */
};
/* retrieve the I/O timeouts to use for a given handle */
static NTSTATUS get_io_timeouts( HANDLE handle, enum server_fd_type type, ULONG count, BOOL is_read,
struct io_timeouts *timeouts )
{
NTSTATUS status = STATUS_SUCCESS;
timeouts->interval = timeouts->total = -1;
switch(type)
{
case FD_TYPE_SERIAL:
{
/* GetCommTimeouts */
SERIAL_TIMEOUTS st;
IO_STATUS_BLOCK io;
status = NtDeviceIoControlFile( handle, NULL, NULL, NULL, &io,
IOCTL_SERIAL_GET_TIMEOUTS, NULL, 0, &st, sizeof(st) );
if (status) break;
if (is_read)
{
if (st.ReadIntervalTimeout)
timeouts->interval = st.ReadIntervalTimeout;
if (st.ReadTotalTimeoutMultiplier || st.ReadTotalTimeoutConstant)
{
timeouts->total = st.ReadTotalTimeoutConstant;
if (st.ReadTotalTimeoutMultiplier != MAXDWORD)
timeouts->total += count * st.ReadTotalTimeoutMultiplier;
}
else if (st.ReadIntervalTimeout == MAXDWORD)
timeouts->interval = timeouts->total = 0;
}
else /* write */
{
if (st.WriteTotalTimeoutMultiplier || st.WriteTotalTimeoutConstant)
{
timeouts->total = st.WriteTotalTimeoutConstant;
if (st.WriteTotalTimeoutMultiplier != MAXDWORD)
timeouts->total += count * st.WriteTotalTimeoutMultiplier;
}
}
}
break;
case FD_TYPE_MAILSLOT:
if (is_read)
{
timeouts->interval = 0; /* return as soon as we got something */
SERVER_START_REQ( set_mailslot_info )
{
req->handle = wine_server_obj_handle( handle );
req->flags = 0;
if (!(status = wine_server_call( req )) &&
reply->read_timeout != TIMEOUT_INFINITE)
timeouts->total = reply->read_timeout / -10000;
}
SERVER_END_REQ;
}
break;
case FD_TYPE_SOCKET:
case FD_TYPE_CHAR:
if (is_read) timeouts->interval = 0; /* return as soon as we got something */
break;
default:
break;
}
if (timeouts->total != -1) timeouts->end_time = NtGetTickCount() + timeouts->total;
return STATUS_SUCCESS;
}
/* retrieve the timeout for the next wait, in milliseconds */
static inline int get_next_io_timeout( const struct io_timeouts *timeouts, ULONG already )
{
int ret = -1;
if (timeouts->total != -1)
{
ret = timeouts->end_time - NtGetTickCount();
if (ret < 0) ret = 0;
}
if (already && timeouts->interval != -1)
{
if (ret == -1 || ret > timeouts->interval) ret = timeouts->interval;
}
return ret;
}
/* retrieve the avail_mode flag for async reads */
static NTSTATUS get_io_avail_mode( HANDLE handle, enum server_fd_type type, BOOL *avail_mode )
{
NTSTATUS status = STATUS_SUCCESS;
switch(type)
{
case FD_TYPE_SERIAL:
{
/* GetCommTimeouts */
SERIAL_TIMEOUTS st;
IO_STATUS_BLOCK io;
status = NtDeviceIoControlFile( handle, NULL, NULL, NULL, &io,
IOCTL_SERIAL_GET_TIMEOUTS, NULL, 0, &st, sizeof(st) );
if (status) break;
*avail_mode = (!st.ReadTotalTimeoutMultiplier &&
!st.ReadTotalTimeoutConstant &&
st.ReadIntervalTimeout == MAXDWORD);
}
break;
case FD_TYPE_MAILSLOT:
case FD_TYPE_SOCKET:
case FD_TYPE_CHAR:
*avail_mode = TRUE;
break;
default:
*avail_mode = FALSE;
break;
}
return status;
}
/* register an async I/O for a file read; helper for NtReadFile */
static NTSTATUS register_async_file_read( HANDLE handle, HANDLE event,
PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *iosb, void *buffer,
ULONG already, ULONG length, BOOL avail_mode )
{
struct async_fileio_read *fileio;
NTSTATUS status;
if (!(fileio = (struct async_fileio_read *)alloc_fileio( sizeof(*fileio), FILE_AsyncReadService, handle )))
return STATUS_NO_MEMORY;
fileio->already = already;
fileio->count = length;
fileio->buffer = buffer;
fileio->avail_mode = avail_mode;
SERVER_START_REQ( register_async )
{
req->type = ASYNC_TYPE_READ;
req->count = length;
req->async = server_async( handle, &fileio->io, event, apc, apc_user, iosb );
status = wine_server_call( req );
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, fileio );
return status;
}
/******************************************************************************
* NtReadFile [NTDLL.@]
......@@ -657,196 +367,7 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
PIO_STATUS_BLOCK io_status, void* buffer, ULONG length,
PLARGE_INTEGER offset, PULONG key)
{
int result, unix_handle, needs_close;
unsigned int options;
struct io_timeouts timeouts;
NTSTATUS status, ret_status;
ULONG total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE, async_read, timeout_init_done = FALSE;
TRACE("(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p)\n",
hFile,hEvent,apc,apc_user,io_status,buffer,length,offset,key);
if (!io_status) return STATUS_ACCESS_VIOLATION;
status = unix_funcs->server_get_unix_fd( hFile, FILE_READ_DATA, &unix_handle,
&needs_close, &type, &options );
if (status && status != STATUS_BAD_DEVICE_TYPE) return status;
if (!unix_funcs->virtual_check_buffer_for_write( buffer, length )) return STATUS_ACCESS_VIOLATION;
if (status == STATUS_BAD_DEVICE_TYPE)
return server_read_file( hFile, hEvent, apc, apc_user, io_status, buffer, length, offset, key );
async_read = !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
if (type == FD_TYPE_FILE)
{
if (async_read && (!offset || offset->QuadPart < 0))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
{
/* async I/O doesn't make sense on regular files */
while ((result = unix_funcs->virtual_locked_pread( unix_handle, buffer, length, offset->QuadPart )) == -1)
{
if (errno != EINTR)
{
status = FILE_GetNtStatus();
goto done;
}
}
if (!async_read)
/* update file pointer position */
lseek( unix_handle, offset->QuadPart + result, SEEK_SET );
total = result;
status = (total || !length) ? STATUS_SUCCESS : STATUS_END_OF_FILE;
goto done;
}
}
else if (type == FD_TYPE_SERIAL || type == FD_TYPE_DEVICE)
{
if (async_read && (!offset || offset->QuadPart < 0))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
}
if (type == FD_TYPE_SERIAL && async_read && length)
{
/* an asynchronous serial port read with a read interval timeout needs to
skip the synchronous read to make sure that the server starts the read
interval timer after the first read */
if ((status = get_io_timeouts( hFile, type, length, TRUE, &timeouts ))) goto err;
if (timeouts.interval)
{
status = register_async_file_read( hFile, hEvent, apc, apc_user, io_status,
buffer, total, length, FALSE );
goto err;
}
}
for (;;)
{
if ((result = unix_funcs->virtual_locked_read( unix_handle, (char *)buffer + total, length - total )) >= 0)
{
total += result;
if (!result || total == length)
{
if (total)
{
status = STATUS_SUCCESS;
goto done;
}
switch (type)
{
case FD_TYPE_FILE:
case FD_TYPE_CHAR:
case FD_TYPE_DEVICE:
status = length ? STATUS_END_OF_FILE : STATUS_SUCCESS;
goto done;
case FD_TYPE_SERIAL:
if (!length)
{
status = STATUS_SUCCESS;
goto done;
}
break;
default:
status = STATUS_PIPE_BROKEN;
goto err;
}
}
else if (type == FD_TYPE_FILE) continue; /* no async I/O on regular files */
}
else if (errno != EAGAIN)
{
if (errno == EINTR) continue;
if (!total) status = FILE_GetNtStatus();
goto err;
}
if (async_read)
{
BOOL avail_mode;
if ((status = get_io_avail_mode( hFile, type, &avail_mode )))
goto err;
if (total && avail_mode)
{
status = STATUS_SUCCESS;
goto done;
}
status = register_async_file_read( hFile, hEvent, apc, apc_user, io_status,
buffer, total, length, avail_mode );
goto err;
}
else /* synchronous read, wait for the fd to become ready */
{
struct pollfd pfd;
int ret, timeout;
if (!timeout_init_done)
{
timeout_init_done = TRUE;
if ((status = get_io_timeouts( hFile, type, length, TRUE, &timeouts )))
goto err;
if (hEvent) NtResetEvent( hEvent, NULL );
}
timeout = get_next_io_timeout( &timeouts, total );
pfd.fd = unix_handle;
pfd.events = POLLIN;
if (!timeout || !(ret = poll( &pfd, 1, timeout )))
{
if (total) /* return with what we got so far */
status = STATUS_SUCCESS;
else
status = (type == FD_TYPE_MAILSLOT) ? STATUS_IO_TIMEOUT : STATUS_TIMEOUT;
goto done;
}
if (ret == -1 && errno != EINTR)
{
status = FILE_GetNtStatus();
goto done;
}
/* will now restart the read */
}
}
done:
send_completion = cvalue != 0;
err:
if (needs_close) close( unix_handle );
if (status == STATUS_SUCCESS || (status == STATUS_END_OF_FILE && (!async_read || type == FD_TYPE_FILE)))
{
io_status->u.Status = status;
io_status->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (hEvent) NtSetEvent( hEvent, NULL );
if (apc && (!status || async_read)) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io_status, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && hEvent) NtResetEvent( hEvent, NULL );
}
ret_status = async_read && type == FD_TYPE_FILE && (status == STATUS_SUCCESS || status == STATUS_END_OF_FILE)
? STATUS_PENDING : status;
if (send_completion) NTDLL_AddCompletion( hFile, cvalue, status, total, ret_status == STATUS_PENDING );
return ret_status;
return unix_funcs->NtReadFile( hFile, hEvent, apc, apc_user, io_status, buffer, length, offset, key );
}
......@@ -858,144 +379,11 @@ NTSTATUS WINAPI NtReadFileScatter( HANDLE file, HANDLE event, PIO_APC_ROUTINE ap
PIO_STATUS_BLOCK io_status, FILE_SEGMENT_ELEMENT *segments,
ULONG length, PLARGE_INTEGER offset, PULONG key )
{
int result, unix_handle, needs_close;
unsigned int options;
NTSTATUS status;
ULONG pos = 0, total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p),partial stub!\n",
file, event, apc, apc_user, io_status, segments, length, offset, key);
if (!io_status) return STATUS_ACCESS_VIOLATION;
status = unix_funcs->server_get_unix_fd( file, FILE_READ_DATA, &unix_handle,
&needs_close, &type, &options );
if (status) return status;
if ((type != FD_TYPE_FILE) ||
(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) ||
!(options & FILE_NO_INTERMEDIATE_BUFFERING))
{
status = STATUS_INVALID_PARAMETER;
goto error;
}
while (length)
{
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
result = pread( unix_handle, (char *)segments->Buffer + pos,
min( length - pos, page_size - pos ), offset->QuadPart + total );
else
result = read( unix_handle, (char *)segments->Buffer + pos, min( length - pos, page_size - pos ) );
if (result == -1)
{
if (errno == EINTR) continue;
status = FILE_GetNtStatus();
break;
}
if (!result) break;
total += result;
length -= result;
if ((pos += result) == page_size)
{
pos = 0;
segments++;
}
}
if (total == 0) status = STATUS_END_OF_FILE;
send_completion = cvalue != 0;
if (needs_close) close( unix_handle );
io_status->u.Status = status;
io_status->Information = total;
TRACE("= 0x%08x (%u)\n", status, total);
if (event) NtSetEvent( event, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io_status, 0 );
if (send_completion) NTDLL_AddCompletion( file, cvalue, status, total, TRUE );
return STATUS_PENDING;
error:
if (needs_close) close( unix_handle );
TRACE("= 0x%08x\n", status);
if (event) NtResetEvent( event, NULL );
return status;
return unix_funcs->NtReadFileScatter( file, event, apc, apc_user, io_status,
segments, length, offset, key );
}
/***********************************************************************
* FILE_AsyncWriteService (INTERNAL)
*/
static NTSTATUS FILE_AsyncWriteService( void *user, IO_STATUS_BLOCK *iosb, NTSTATUS status )
{
struct async_fileio_write *fileio = user;
int result, fd, needs_close;
enum server_fd_type type;
switch (status)
{
case STATUS_ALERTED:
/* write some data (non-blocking) */
if ((status = unix_funcs->server_get_unix_fd( fileio->io.handle, FILE_WRITE_DATA, &fd,
&needs_close, &type, NULL )))
break;
if (!fileio->count && (type == FD_TYPE_MAILSLOT || type == FD_TYPE_SOCKET))
result = send( fd, fileio->buffer, 0, 0 );
else
result = write( fd, &fileio->buffer[fileio->already], fileio->count - fileio->already );
if (needs_close) close( fd );
if (result < 0)
{
if (errno == EAGAIN || errno == EINTR) status = STATUS_PENDING;
else status = FILE_GetNtStatus();
}
else
{
fileio->already += result;
status = (fileio->already < fileio->count) ? STATUS_PENDING : STATUS_SUCCESS;
}
break;
case STATUS_TIMEOUT:
case STATUS_IO_TIMEOUT:
if (fileio->already) status = STATUS_SUCCESS;
break;
}
if (status != STATUS_PENDING)
{
iosb->u.Status = status;
iosb->Information = fileio->already;
release_fileio( &fileio->io );
}
return status;
}
static NTSTATUS set_pending_write( HANDLE device )
{
NTSTATUS status;
SERVER_START_REQ( set_serial_info )
{
req->handle = wine_server_obj_handle( device );
req->flags = SERIALINFO_PENDING_WRITE;
status = wine_server_call( req );
}
SERVER_END_REQ;
return status;
}
/******************************************************************************
* NtWriteFile [NTDLL.@]
......@@ -1025,223 +413,7 @@ NTSTATUS WINAPI NtWriteFile(HANDLE hFile, HANDLE hEvent,
const void* buffer, ULONG length,
PLARGE_INTEGER offset, PULONG key)
{
int result, unix_handle, needs_close;
unsigned int options;
struct io_timeouts timeouts;
NTSTATUS status, ret_status;
ULONG total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE, async_write, append_write = FALSE, timeout_init_done = FALSE;
LARGE_INTEGER offset_eof;
TRACE("(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p)\n",
hFile,hEvent,apc,apc_user,io_status,buffer,length,offset,key);
if (!io_status) return STATUS_ACCESS_VIOLATION;
status = unix_funcs->server_get_unix_fd( hFile, FILE_WRITE_DATA, &unix_handle,
&needs_close, &type, &options );
if (status == STATUS_ACCESS_DENIED)
{
status = unix_funcs->server_get_unix_fd( hFile, FILE_APPEND_DATA, &unix_handle,
&needs_close, &type, &options );
append_write = TRUE;
}
if (status && status != STATUS_BAD_DEVICE_TYPE) return status;
async_write = !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
if (!unix_funcs->virtual_check_buffer_for_read( buffer, length ))
{
status = STATUS_INVALID_USER_BUFFER;
goto done;
}
if (status == STATUS_BAD_DEVICE_TYPE)
return server_write_file( hFile, hEvent, apc, apc_user, io_status, buffer, length, offset, key );
if (type == FD_TYPE_FILE)
{
if (async_write &&
(!offset || (offset->QuadPart < 0 && offset->QuadPart != FILE_WRITE_TO_END_OF_FILE)))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
if (append_write)
{
offset_eof.QuadPart = FILE_WRITE_TO_END_OF_FILE;
offset = &offset_eof;
}
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
{
off_t off = offset->QuadPart;
if (offset->QuadPart == FILE_WRITE_TO_END_OF_FILE)
{
struct stat st;
if (fstat( unix_handle, &st ) == -1)
{
status = FILE_GetNtStatus();
goto done;
}
off = st.st_size;
}
else if (offset->QuadPart < 0)
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
/* async I/O doesn't make sense on regular files */
while ((result = pwrite( unix_handle, buffer, length, off )) == -1)
{
if (errno != EINTR)
{
if (errno == EFAULT) status = STATUS_INVALID_USER_BUFFER;
else status = FILE_GetNtStatus();
goto done;
}
}
if (!async_write)
/* update file pointer position */
lseek( unix_handle, off + result, SEEK_SET );
total = result;
status = STATUS_SUCCESS;
goto done;
}
}
else if (type == FD_TYPE_SERIAL || type == FD_TYPE_DEVICE)
{
if (async_write &&
(!offset || (offset->QuadPart < 0 && offset->QuadPart != FILE_WRITE_TO_END_OF_FILE)))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
}
for (;;)
{
/* zero-length writes on sockets may not work with plain write(2) */
if (!length && (type == FD_TYPE_MAILSLOT || type == FD_TYPE_SOCKET))
result = send( unix_handle, buffer, 0, 0 );
else
result = write( unix_handle, (const char *)buffer + total, length - total );
if (result >= 0)
{
total += result;
if (total == length)
{
status = STATUS_SUCCESS;
goto done;
}
if (type == FD_TYPE_FILE) continue; /* no async I/O on regular files */
}
else if (errno != EAGAIN)
{
if (errno == EINTR) continue;
if (!total)
{
if (errno == EFAULT) status = STATUS_INVALID_USER_BUFFER;
else status = FILE_GetNtStatus();
}
goto err;
}
if (async_write)
{
struct async_fileio_write *fileio;
fileio = (struct async_fileio_write *)alloc_fileio( sizeof(*fileio), FILE_AsyncWriteService, hFile );
if (!fileio)
{
status = STATUS_NO_MEMORY;
goto err;
}
fileio->already = total;
fileio->count = length;
fileio->buffer = buffer;
SERVER_START_REQ( register_async )
{
req->type = ASYNC_TYPE_WRITE;
req->count = length;
req->async = server_async( hFile, &fileio->io, hEvent, apc, apc_user, io_status );
status = wine_server_call( req );
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, fileio );
goto err;
}
else /* synchronous write, wait for the fd to become ready */
{
struct pollfd pfd;
int ret, timeout;
if (!timeout_init_done)
{
timeout_init_done = TRUE;
if ((status = get_io_timeouts( hFile, type, length, FALSE, &timeouts )))
goto err;
if (hEvent) NtResetEvent( hEvent, NULL );
}
timeout = get_next_io_timeout( &timeouts, total );
pfd.fd = unix_handle;
pfd.events = POLLOUT;
if (!timeout || !(ret = poll( &pfd, 1, timeout )))
{
/* return with what we got so far */
status = total ? STATUS_SUCCESS : STATUS_TIMEOUT;
goto done;
}
if (ret == -1 && errno != EINTR)
{
status = FILE_GetNtStatus();
goto done;
}
/* will now restart the write */
}
}
done:
send_completion = cvalue != 0;
err:
if (needs_close) close( unix_handle );
if (type == FD_TYPE_SERIAL && (status == STATUS_SUCCESS || status == STATUS_PENDING))
set_pending_write( hFile );
if (status == STATUS_SUCCESS)
{
io_status->u.Status = status;
io_status->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (hEvent) NtSetEvent( hEvent, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io_status, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && hEvent) NtResetEvent( hEvent, NULL );
}
ret_status = async_write && type == FD_TYPE_FILE && status == STATUS_SUCCESS ? STATUS_PENDING : status;
if (send_completion) NTDLL_AddCompletion( hFile, cvalue, status, total, ret_status == STATUS_PENDING );
return ret_status;
return unix_funcs->NtWriteFile( hFile, hEvent, apc, apc_user, io_status, buffer, length, offset, key );
}
......@@ -1253,87 +425,8 @@ NTSTATUS WINAPI NtWriteFileGather( HANDLE file, HANDLE event, PIO_APC_ROUTINE ap
PIO_STATUS_BLOCK io_status, FILE_SEGMENT_ELEMENT *segments,
ULONG length, PLARGE_INTEGER offset, PULONG key )
{
int result, unix_handle, needs_close;
unsigned int options;
NTSTATUS status;
ULONG pos = 0, total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p),partial stub!\n",
file, event, apc, apc_user, io_status, segments, length, offset, key);
if (length % page_size) return STATUS_INVALID_PARAMETER;
if (!io_status) return STATUS_ACCESS_VIOLATION;
status = unix_funcs->server_get_unix_fd( file, FILE_WRITE_DATA, &unix_handle,
&needs_close, &type, &options );
if (status) return status;
if ((type != FD_TYPE_FILE) ||
(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) ||
!(options & FILE_NO_INTERMEDIATE_BUFFERING))
{
status = STATUS_INVALID_PARAMETER;
goto error;
}
while (length)
{
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
result = pwrite( unix_handle, (char *)segments->Buffer + pos,
page_size - pos, offset->QuadPart + total );
else
result = write( unix_handle, (char *)segments->Buffer + pos, page_size - pos );
if (result == -1)
{
if (errno == EINTR) continue;
if (errno == EFAULT)
{
status = STATUS_INVALID_USER_BUFFER;
goto error;
}
status = FILE_GetNtStatus();
break;
}
if (!result)
{
status = STATUS_DISK_FULL;
break;
}
total += result;
length -= result;
if ((pos += result) == page_size)
{
pos = 0;
segments++;
}
}
send_completion = cvalue != 0;
error:
if (needs_close) close( unix_handle );
if (status == STATUS_SUCCESS)
{
io_status->u.Status = status;
io_status->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (event) NtSetEvent( event, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io_status, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && event) NtResetEvent( event, NULL );
}
if (send_completion) NTDLL_AddCompletion( file, cvalue, status, total, FALSE );
return status;
return unix_funcs->NtWriteFileGather( file, event, apc, apc_user, io_status,
segments, length, offset, key );
}
......
dlls/ntdll/ntdll_misc.h
View file @ 888d66a2
......@@ -150,10 +150,6 @@ extern void virtual_fill_image_information( const pe_image_info_t *pe_info,
SECTION_IMAGE_INFORMATION *info ) DECLSPEC_HIDDEN;
extern struct _KUSER_SHARED_DATA *user_shared_data DECLSPEC_HIDDEN;
/* completion */
extern NTSTATUS NTDLL_AddCompletion( HANDLE hFile, ULONG_PTR CompletionValue,
NTSTATUS CompletionStatus, ULONG Information, BOOL async) DECLSPEC_HIDDEN;
/* locale */
extern LCID user_lcid, system_lcid;
extern DWORD ntdll_umbstowcs( const char* src, DWORD srclen, WCHAR* dst, DWORD dstlen ) DECLSPEC_HIDDEN;
......
dlls/ntdll/sync.c
View file @ 888d66a2
......@@ -582,24 +582,6 @@ NTSTATUS WINAPI NtQueryIoCompletion( HANDLE handle, IO_COMPLETION_INFORMATION_CL
return unix_funcs->NtQueryIoCompletion( handle, class, buffer, len, ret_len );
}
NTSTATUS NTDLL_AddCompletion( HANDLE hFile, ULONG_PTR CompletionValue,
NTSTATUS CompletionStatus, ULONG Information, BOOL async )
{
NTSTATUS status;
SERVER_START_REQ( add_fd_completion )
{
req->handle = wine_server_obj_handle( hFile );
req->cvalue = CompletionValue;
req->status = CompletionStatus;
req->information = Information;
req->async = async;
status = wine_server_call( req );
}
SERVER_END_REQ;
return status;
}
/******************************************************************
* RtlRunOnceInitialize (NTDLL.@)
*/
......
dlls/ntdll/unix/file.c
View file @ 888d66a2
......@@ -40,6 +40,9 @@
#ifdef HAVE_MNTENT_H
#include <mntent.h>
#endif
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
......@@ -112,6 +115,7 @@
#include "winioctl.h"
#include "winternl.h"
#include "ddk/ntddk.h"
#include "ddk/ntddser.h"
#include "ddk/wdm.h"
#define WINE_MOUNTMGR_EXTENSIONS
#include "ddk/mountmgr.h"
......@@ -125,6 +129,9 @@ WINE_DECLARE_DEBUG_CHANNEL(winediag);
#define MAX_DOS_DRIVES 26
#define FILE_WRITE_TO_END_OF_FILE ((LONGLONG)-1)
#define FILE_USE_FILE_POINTER_POSITION ((LONGLONG)-2)
/* just in case... */
#undef VFAT_IOCTL_READDIR_BOTH
#undef EXT2_IOC_GETFLAGS
......@@ -4282,3 +4289,1067 @@ NTSTATUS WINAPI NtSetInformationFile( HANDLE handle, IO_STATUS_BLOCK *io,
io->Information = 0;
return io->u.Status;
}
/***********************************************************************
* Asynchronous file I/O *
*/
typedef NTSTATUS async_callback_t( void *user, IO_STATUS_BLOCK *io, NTSTATUS status );
struct async_fileio
{
async_callback_t *callback; /* must be the first field */
struct async_fileio *next;
HANDLE handle;
};
struct async_fileio_read
{
struct async_fileio io;
char *buffer;
unsigned int already;
unsigned int count;
BOOL avail_mode;
};
struct async_fileio_write
{
struct async_fileio io;
const char *buffer;
unsigned int already;
unsigned int count;
};
struct async_irp
{
struct async_fileio io;
void *buffer; /* buffer for output */
ULONG size; /* size of buffer */
};
static struct async_fileio *fileio_freelist;
static void release_fileio( struct async_fileio *io )
{
for (;;)
{
struct async_fileio *next = fileio_freelist;
io->next = next;
if (InterlockedCompareExchangePointer( (void **)&fileio_freelist, io, next ) == next) return;
}
}
static struct async_fileio *alloc_fileio( DWORD size, async_callback_t callback, HANDLE handle )
{
/* first free remaining previous fileinfos */
struct async_fileio *io = InterlockedExchangePointer( (void **)&fileio_freelist, NULL );
while (io)
{
struct async_fileio *next = io->next;
RtlFreeHeap( GetProcessHeap(), 0, io );
io = next;
}
if ((io = RtlAllocateHeap( GetProcessHeap(), 0, size )))
{
io->callback = callback;
io->handle = handle;
}
return io;
}
static async_data_t server_async( HANDLE handle, struct async_fileio *user, HANDLE event,
PIO_APC_ROUTINE apc, void *apc_context, IO_STATUS_BLOCK *io )
{
async_data_t async;
async.handle = wine_server_obj_handle( handle );
async.user = wine_server_client_ptr( user );
async.iosb = wine_server_client_ptr( io );
async.event = wine_server_obj_handle( event );
async.apc = wine_server_client_ptr( apc );
async.apc_context = wine_server_client_ptr( apc_context );
return async;
}
static NTSTATUS wait_async( HANDLE handle, BOOL alertable, IO_STATUS_BLOCK *io )
{
if (NtWaitForSingleObject( handle, alertable, NULL )) return STATUS_PENDING;
return io->u.Status;
}
/* callback for irp async I/O completion */
static NTSTATUS irp_completion( void *user, IO_STATUS_BLOCK *io, NTSTATUS status )
{
struct async_irp *async = user;
ULONG information = 0;
if (status == STATUS_ALERTED)
{
SERVER_START_REQ( get_async_result )
{
req->user_arg = wine_server_client_ptr( async );
wine_server_set_reply( req, async->buffer, async->size );
status = virtual_locked_server_call( req );
information = reply->size;
}
SERVER_END_REQ;
}
if (status != STATUS_PENDING)
{
io->u.Status = status;
io->Information = information;
release_fileio( &async->io );
}
return status;
}
static NTSTATUS async_read_proc( void *user, IO_STATUS_BLOCK *iosb, NTSTATUS status )
{
struct async_fileio_read *fileio = user;
int fd, needs_close, result;
switch (status)
{
case STATUS_ALERTED: /* got some new data */
/* check to see if the data is ready (non-blocking) */
if ((status = server_get_unix_fd( fileio->io.handle, FILE_READ_DATA, &fd,
&needs_close, NULL, NULL )))
break;
result = virtual_locked_read(fd, &fileio->buffer[fileio->already], fileio->count-fileio->already);
if (needs_close) close( fd );
if (result < 0)
{
if (errno == EAGAIN || errno == EINTR)
status = STATUS_PENDING;
else /* check to see if the transfer is complete */
status = errno_to_status( errno );
}
else if (result == 0)
{
status = fileio->already ? STATUS_SUCCESS : STATUS_PIPE_BROKEN;
}
else
{
fileio->already += result;
if (fileio->already >= fileio->count || fileio->avail_mode)
status = STATUS_SUCCESS;
else
status = STATUS_PENDING;
}
break;
case STATUS_TIMEOUT:
case STATUS_IO_TIMEOUT:
if (fileio->already) status = STATUS_SUCCESS;
break;
}
if (status != STATUS_PENDING)
{
iosb->u.Status = status;
iosb->Information = fileio->already;
release_fileio( &fileio->io );
}
return status;
}
static NTSTATUS async_write_proc( void *user, IO_STATUS_BLOCK *iosb, NTSTATUS status )
{
struct async_fileio_write *fileio = user;
int result, fd, needs_close;
enum server_fd_type type;
switch (status)
{
case STATUS_ALERTED:
/* write some data (non-blocking) */
if ((status = server_get_unix_fd( fileio->io.handle, FILE_WRITE_DATA, &fd,
&needs_close, &type, NULL )))
break;
if (!fileio->count && (type == FD_TYPE_MAILSLOT || type == FD_TYPE_SOCKET))
result = send( fd, fileio->buffer, 0, 0 );
else
result = write( fd, &fileio->buffer[fileio->already], fileio->count - fileio->already );
if (needs_close) close( fd );
if (result < 0)
{
if (errno == EAGAIN || errno == EINTR) status = STATUS_PENDING;
else status = errno_to_status( errno );
}
else
{
fileio->already += result;
status = (fileio->already < fileio->count) ? STATUS_PENDING : STATUS_SUCCESS;
}
break;
case STATUS_TIMEOUT:
case STATUS_IO_TIMEOUT:
if (fileio->already) status = STATUS_SUCCESS;
break;
}
if (status != STATUS_PENDING)
{
iosb->u.Status = status;
iosb->Information = fileio->already;
release_fileio( &fileio->io );
}
return status;
}
/* do a read call through the server */
static NTSTATUS server_read_file( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_context,
IO_STATUS_BLOCK *io, void *buffer, ULONG size,
LARGE_INTEGER *offset, ULONG *key )
{
struct async_irp *async;
NTSTATUS status;
HANDLE wait_handle;
ULONG options;
if (!(async = (struct async_irp *)alloc_fileio( sizeof(*async), irp_completion, handle )))
return STATUS_NO_MEMORY;
async->buffer = buffer;
async->size = size;
SERVER_START_REQ( read )
{
req->async = server_async( handle, &async->io, event, apc, apc_context, io );
req->pos = offset ? offset->QuadPart : 0;
wine_server_set_reply( req, buffer, size );
status = virtual_locked_server_call( req );
wait_handle = wine_server_ptr_handle( reply->wait );
options = reply->options;
if (wait_handle && status != STATUS_PENDING)
{
io->u.Status = status;
io->Information = wine_server_reply_size( reply );
}
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, async );
if (wait_handle) status = wait_async( wait_handle, (options & FILE_SYNCHRONOUS_IO_ALERT), io );
return status;
}
/* do a write call through the server */
static NTSTATUS server_write_file( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_context,
IO_STATUS_BLOCK *io, const void *buffer, ULONG size,
LARGE_INTEGER *offset, ULONG *key )
{
struct async_irp *async;
NTSTATUS status;
HANDLE wait_handle;
ULONG options;
if (!(async = (struct async_irp *)alloc_fileio( sizeof(*async), irp_completion, handle )))
return STATUS_NO_MEMORY;
async->buffer = NULL;
async->size = 0;
SERVER_START_REQ( write )
{
req->async = server_async( handle, &async->io, event, apc, apc_context, io );
req->pos = offset ? offset->QuadPart : 0;
wine_server_add_data( req, buffer, size );
status = wine_server_call( req );
wait_handle = wine_server_ptr_handle( reply->wait );
options = reply->options;
if (wait_handle && status != STATUS_PENDING)
{
io->u.Status = status;
io->Information = reply->size;
}
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, async );
if (wait_handle) status = wait_async( wait_handle, (options & FILE_SYNCHRONOUS_IO_ALERT), io );
return status;
}
struct io_timeouts
{
int interval; /* max interval between two bytes */
int total; /* total timeout for the whole operation */
int end_time; /* absolute time of end of operation */
};
/* retrieve the I/O timeouts to use for a given handle */
static NTSTATUS get_io_timeouts( HANDLE handle, enum server_fd_type type, ULONG count, BOOL is_read,
struct io_timeouts *timeouts )
{
NTSTATUS status = STATUS_SUCCESS;
timeouts->interval = timeouts->total = -1;
switch(type)
{
case FD_TYPE_SERIAL:
{
/* GetCommTimeouts */
SERIAL_TIMEOUTS st;
IO_STATUS_BLOCK io;
status = NtDeviceIoControlFile( handle, NULL, NULL, NULL, &io,
IOCTL_SERIAL_GET_TIMEOUTS, NULL, 0, &st, sizeof(st) );
if (status) break;
if (is_read)
{
if (st.ReadIntervalTimeout)
timeouts->interval = st.ReadIntervalTimeout;
if (st.ReadTotalTimeoutMultiplier || st.ReadTotalTimeoutConstant)
{
timeouts->total = st.ReadTotalTimeoutConstant;
if (st.ReadTotalTimeoutMultiplier != MAXDWORD)
timeouts->total += count * st.ReadTotalTimeoutMultiplier;
}
else if (st.ReadIntervalTimeout == MAXDWORD)
timeouts->interval = timeouts->total = 0;
}
else /* write */
{
if (st.WriteTotalTimeoutMultiplier || st.WriteTotalTimeoutConstant)
{
timeouts->total = st.WriteTotalTimeoutConstant;
if (st.WriteTotalTimeoutMultiplier != MAXDWORD)
timeouts->total += count * st.WriteTotalTimeoutMultiplier;
}
}
break;
}
case FD_TYPE_MAILSLOT:
if (is_read)
{
timeouts->interval = 0; /* return as soon as we got something */
SERVER_START_REQ( set_mailslot_info )
{
req->handle = wine_server_obj_handle( handle );
req->flags = 0;
if (!(status = wine_server_call( req )) &&
reply->read_timeout != TIMEOUT_INFINITE)
timeouts->total = reply->read_timeout / -10000;
}
SERVER_END_REQ;
}
break;
case FD_TYPE_SOCKET:
case FD_TYPE_CHAR:
if (is_read) timeouts->interval = 0; /* return as soon as we got something */
break;
default:
break;
}
if (timeouts->total != -1) timeouts->end_time = NtGetTickCount() + timeouts->total;
return STATUS_SUCCESS;
}
/* retrieve the timeout for the next wait, in milliseconds */
static inline int get_next_io_timeout( const struct io_timeouts *timeouts, ULONG already )
{
int ret = -1;
if (timeouts->total != -1)
{
ret = timeouts->end_time - NtGetTickCount();
if (ret < 0) ret = 0;
}
if (already && timeouts->interval != -1)
{
if (ret == -1 || ret > timeouts->interval) ret = timeouts->interval;
}
return ret;
}
/* retrieve the avail_mode flag for async reads */
static NTSTATUS get_io_avail_mode( HANDLE handle, enum server_fd_type type, BOOL *avail_mode )
{
NTSTATUS status = STATUS_SUCCESS;
switch(type)
{
case FD_TYPE_SERIAL:
{
/* GetCommTimeouts */
SERIAL_TIMEOUTS st;
IO_STATUS_BLOCK io;
status = NtDeviceIoControlFile( handle, NULL, NULL, NULL, &io,
IOCTL_SERIAL_GET_TIMEOUTS, NULL, 0, &st, sizeof(st) );
if (status) break;
*avail_mode = (!st.ReadTotalTimeoutMultiplier &&
!st.ReadTotalTimeoutConstant &&
st.ReadIntervalTimeout == MAXDWORD);
break;
}
case FD_TYPE_MAILSLOT:
case FD_TYPE_SOCKET:
case FD_TYPE_CHAR:
*avail_mode = TRUE;
break;
default:
*avail_mode = FALSE;
break;
}
return status;
}
/* register an async I/O for a file read; helper for NtReadFile */
static NTSTATUS register_async_file_read( HANDLE handle, HANDLE event,
PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *iosb, void *buffer,
ULONG already, ULONG length, BOOL avail_mode )
{
struct async_fileio_read *fileio;
NTSTATUS status;
if (!(fileio = (struct async_fileio_read *)alloc_fileio( sizeof(*fileio), async_read_proc, handle )))
return STATUS_NO_MEMORY;
fileio->already = already;
fileio->count = length;
fileio->buffer = buffer;
fileio->avail_mode = avail_mode;
SERVER_START_REQ( register_async )
{
req->type = ASYNC_TYPE_READ;
req->count = length;
req->async = server_async( handle, &fileio->io, event, apc, apc_user, iosb );
status = wine_server_call( req );
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, fileio );
return status;
}
static void add_completion( HANDLE handle, ULONG_PTR value, NTSTATUS status, ULONG info, BOOL async )
{
SERVER_START_REQ( add_fd_completion )
{
req->handle = wine_server_obj_handle( handle );
req->cvalue = value;
req->status = status;
req->information = info;
req->async = async;
wine_server_call( req );
}
SERVER_END_REQ;
}
static NTSTATUS set_pending_write( HANDLE device )
{
NTSTATUS status;
SERVER_START_REQ( set_serial_info )
{
req->handle = wine_server_obj_handle( device );
req->flags = SERIALINFO_PENDING_WRITE;
status = wine_server_call( req );
}
SERVER_END_REQ;
return status;
}
/******************************************************************************
* NtReadFile (NTDLL.@)
*/
NTSTATUS WINAPI NtReadFile( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, void *buffer, ULONG length,
LARGE_INTEGER *offset, ULONG *key )
{
int result, unix_handle, needs_close;
unsigned int options;
struct io_timeouts timeouts;
NTSTATUS status, ret_status;
ULONG total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE, async_read, timeout_init_done = FALSE;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p)\n",
handle, event, apc, apc_user, io, buffer, length, offset, key );
if (!io) return STATUS_ACCESS_VIOLATION;
status = server_get_unix_fd( handle, FILE_READ_DATA, &unix_handle, &needs_close, &type, &options );
if (status && status != STATUS_BAD_DEVICE_TYPE) return status;
if (!virtual_check_buffer_for_write( buffer, length )) return STATUS_ACCESS_VIOLATION;
if (status == STATUS_BAD_DEVICE_TYPE)
return server_read_file( handle, event, apc, apc_user, io, buffer, length, offset, key );
async_read = !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
if (type == FD_TYPE_FILE)
{
if (async_read && (!offset || offset->QuadPart < 0))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
{
/* async I/O doesn't make sense on regular files */
while ((result = virtual_locked_pread( unix_handle, buffer, length, offset->QuadPart )) == -1)
{
if (errno != EINTR)
{
status = errno_to_status( errno );
goto done;
}
}
if (!async_read) /* update file pointer position */
lseek( unix_handle, offset->QuadPart + result, SEEK_SET );
total = result;
status = (total || !length) ? STATUS_SUCCESS : STATUS_END_OF_FILE;
goto done;
}
}
else if (type == FD_TYPE_SERIAL || type == FD_TYPE_DEVICE)
{
if (async_read && (!offset || offset->QuadPart < 0))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
}
if (type == FD_TYPE_SERIAL && async_read && length)
{
/* an asynchronous serial port read with a read interval timeout needs to
skip the synchronous read to make sure that the server starts the read
interval timer after the first read */
if ((status = get_io_timeouts( handle, type, length, TRUE, &timeouts ))) goto err;
if (timeouts.interval)
{
status = register_async_file_read( handle, event, apc, apc_user, io,
buffer, total, length, FALSE );
goto err;
}
}
for (;;)
{
if ((result = virtual_locked_read( unix_handle, (char *)buffer + total, length - total )) >= 0)
{
total += result;
if (!result || total == length)
{
if (total)
{
status = STATUS_SUCCESS;
goto done;
}
switch (type)
{
case FD_TYPE_FILE:
case FD_TYPE_CHAR:
case FD_TYPE_DEVICE:
status = length ? STATUS_END_OF_FILE : STATUS_SUCCESS;
goto done;
case FD_TYPE_SERIAL:
if (!length)
{
status = STATUS_SUCCESS;
goto done;
}
break;
default:
status = STATUS_PIPE_BROKEN;
goto err;
}
}
else if (type == FD_TYPE_FILE) continue; /* no async I/O on regular files */
}
else if (errno != EAGAIN)
{
if (errno == EINTR) continue;
if (!total) status = errno_to_status( errno );
goto err;
}
if (async_read)
{
BOOL avail_mode;
if ((status = get_io_avail_mode( handle, type, &avail_mode ))) goto err;
if (total && avail_mode)
{
status = STATUS_SUCCESS;
goto done;
}
status = register_async_file_read( handle, event, apc, apc_user, io,
buffer, total, length, avail_mode );
goto err;
}
else /* synchronous read, wait for the fd to become ready */
{
struct pollfd pfd;
int ret, timeout;
if (!timeout_init_done)
{
timeout_init_done = TRUE;
if ((status = get_io_timeouts( handle, type, length, TRUE, &timeouts ))) goto err;
if (event) NtResetEvent( event, NULL );
}
timeout = get_next_io_timeout( &timeouts, total );
pfd.fd = unix_handle;
pfd.events = POLLIN;
if (!timeout || !(ret = poll( &pfd, 1, timeout )))
{
if (total) /* return with what we got so far */
status = STATUS_SUCCESS;
else
status = (type == FD_TYPE_MAILSLOT) ? STATUS_IO_TIMEOUT : STATUS_TIMEOUT;
goto done;
}
if (ret == -1 && errno != EINTR)
{
status = errno_to_status( errno );
goto done;
}
/* will now restart the read */
}
}
done:
send_completion = cvalue != 0;
err:
if (needs_close) close( unix_handle );
if (status == STATUS_SUCCESS || (status == STATUS_END_OF_FILE && (!async_read || type == FD_TYPE_FILE)))
{
io->u.Status = status;
io->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (event) NtSetEvent( event, NULL );
if (apc && (!status || async_read)) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && event) NtResetEvent( event, NULL );
}
ret_status = async_read && type == FD_TYPE_FILE && (status == STATUS_SUCCESS || status == STATUS_END_OF_FILE)
? STATUS_PENDING : status;
if (send_completion) add_completion( handle, cvalue, status, total, ret_status == STATUS_PENDING );
return ret_status;
}
/******************************************************************************
* NtReadFileScatter (NTDLL.@)
*/
NTSTATUS WINAPI NtReadFileScatter( HANDLE file, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, FILE_SEGMENT_ELEMENT *segments,
ULONG length, LARGE_INTEGER *offset, ULONG *key )
{
int result, unix_handle, needs_close;
unsigned int options;
NTSTATUS status;
ULONG pos = 0, total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p),partial stub!\n",
file, event, apc, apc_user, io, segments, length, offset, key );
if (!io) return STATUS_ACCESS_VIOLATION;
status = server_get_unix_fd( file, FILE_READ_DATA, &unix_handle, &needs_close, &type, &options );
if (status) return status;
if ((type != FD_TYPE_FILE) ||
(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) ||
!(options & FILE_NO_INTERMEDIATE_BUFFERING))
{
status = STATUS_INVALID_PARAMETER;
goto error;
}
while (length)
{
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
result = pread( unix_handle, (char *)segments->Buffer + pos,
min( length - pos, page_size - pos ), offset->QuadPart + total );
else
result = read( unix_handle, (char *)segments->Buffer + pos, min( length - pos, page_size - pos ) );
if (result == -1)
{
if (errno == EINTR) continue;
status = errno_to_status( errno );
break;
}
if (!result) break;
total += result;
length -= result;
if ((pos += result) == page_size)
{
pos = 0;
segments++;
}
}
if (total == 0) status = STATUS_END_OF_FILE;
send_completion = cvalue != 0;
if (needs_close) close( unix_handle );
io->u.Status = status;
io->Information = total;
TRACE("= 0x%08x (%u)\n", status, total);
if (event) NtSetEvent( event, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io, 0 );
if (send_completion) add_completion( file, cvalue, status, total, TRUE );
return STATUS_PENDING;
error:
if (needs_close) close( unix_handle );
if (event) NtResetEvent( event, NULL );
TRACE("= 0x%08x\n", status);
return status;
}
/******************************************************************************
* NtWriteFile (NTDLL.@)
*/
NTSTATUS WINAPI NtWriteFile( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, const void *buffer, ULONG length,
LARGE_INTEGER *offset, ULONG *key )
{
int result, unix_handle, needs_close;
unsigned int options;
struct io_timeouts timeouts;
NTSTATUS status, ret_status;
ULONG total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE, async_write, append_write = FALSE, timeout_init_done = FALSE;
LARGE_INTEGER offset_eof;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p)\n",
handle, event, apc, apc_user, io, buffer, length, offset, key );
if (!io) return STATUS_ACCESS_VIOLATION;
status = server_get_unix_fd( handle, FILE_WRITE_DATA, &unix_handle, &needs_close, &type, &options );
if (status == STATUS_ACCESS_DENIED)
{
status = server_get_unix_fd( handle, FILE_APPEND_DATA, &unix_handle,
&needs_close, &type, &options );
append_write = TRUE;
}
if (status && status != STATUS_BAD_DEVICE_TYPE) return status;
async_write = !(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
if (!virtual_check_buffer_for_read( buffer, length ))
{
status = STATUS_INVALID_USER_BUFFER;
goto done;
}
if (status == STATUS_BAD_DEVICE_TYPE)
return server_write_file( handle, event, apc, apc_user, io, buffer, length, offset, key );
if (type == FD_TYPE_FILE)
{
if (async_write &&
(!offset || (offset->QuadPart < 0 && offset->QuadPart != FILE_WRITE_TO_END_OF_FILE)))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
if (append_write)
{
offset_eof.QuadPart = FILE_WRITE_TO_END_OF_FILE;
offset = &offset_eof;
}
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
{
off_t off = offset->QuadPart;
if (offset->QuadPart == FILE_WRITE_TO_END_OF_FILE)
{
struct stat st;
if (fstat( unix_handle, &st ) == -1)
{
status = errno_to_status( errno );
goto done;
}
off = st.st_size;
}
else if (offset->QuadPart < 0)
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
/* async I/O doesn't make sense on regular files */
while ((result = pwrite( unix_handle, buffer, length, off )) == -1)
{
if (errno != EINTR)
{
if (errno == EFAULT) status = STATUS_INVALID_USER_BUFFER;
else status = errno_to_status( errno );
goto done;
}
}
if (!async_write) /* update file pointer position */
lseek( unix_handle, off + result, SEEK_SET );
total = result;
status = STATUS_SUCCESS;
goto done;
}
}
else if (type == FD_TYPE_SERIAL || type == FD_TYPE_DEVICE)
{
if (async_write &&
(!offset || (offset->QuadPart < 0 && offset->QuadPart != FILE_WRITE_TO_END_OF_FILE)))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
}
for (;;)
{
/* zero-length writes on sockets may not work with plain write(2) */
if (!length && (type == FD_TYPE_MAILSLOT || type == FD_TYPE_SOCKET))
result = send( unix_handle, buffer, 0, 0 );
else
result = write( unix_handle, (const char *)buffer + total, length - total );
if (result >= 0)
{
total += result;
if (total == length)
{
status = STATUS_SUCCESS;
goto done;
}
if (type == FD_TYPE_FILE) continue; /* no async I/O on regular files */
}
else if (errno != EAGAIN)
{
if (errno == EINTR) continue;
if (!total)
{
if (errno == EFAULT) status = STATUS_INVALID_USER_BUFFER;
else status = errno_to_status( errno );
}
goto err;
}
if (async_write)
{
struct async_fileio_write *fileio;
fileio = (struct async_fileio_write *)alloc_fileio( sizeof(*fileio), async_write_proc, handle );
if (!fileio)
{
status = STATUS_NO_MEMORY;
goto err;
}
fileio->already = total;
fileio->count = length;
fileio->buffer = buffer;
SERVER_START_REQ( register_async )
{
req->type = ASYNC_TYPE_WRITE;
req->count = length;
req->async = server_async( handle, &fileio->io, event, apc, apc_user, io );
status = wine_server_call( req );
}
SERVER_END_REQ;
if (status != STATUS_PENDING) RtlFreeHeap( GetProcessHeap(), 0, fileio );
goto err;
}
else /* synchronous write, wait for the fd to become ready */
{
struct pollfd pfd;
int ret, timeout;
if (!timeout_init_done)
{
timeout_init_done = TRUE;
if ((status = get_io_timeouts( handle, type, length, FALSE, &timeouts )))
goto err;
if (event) NtResetEvent( event, NULL );
}
timeout = get_next_io_timeout( &timeouts, total );
pfd.fd = unix_handle;
pfd.events = POLLOUT;
if (!timeout || !(ret = poll( &pfd, 1, timeout )))
{
/* return with what we got so far */
status = total ? STATUS_SUCCESS : STATUS_TIMEOUT;
goto done;
}
if (ret == -1 && errno != EINTR)
{
status = errno_to_status( errno );
goto done;
}
/* will now restart the write */
}
}
done:
send_completion = cvalue != 0;
err:
if (needs_close) close( unix_handle );
if (type == FD_TYPE_SERIAL && (status == STATUS_SUCCESS || status == STATUS_PENDING))
set_pending_write( handle );
if (status == STATUS_SUCCESS)
{
io->u.Status = status;
io->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (event) NtSetEvent( event, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && event) NtResetEvent( event, NULL );
}
ret_status = async_write && type == FD_TYPE_FILE && status == STATUS_SUCCESS ? STATUS_PENDING : status;
if (send_completion) add_completion( handle, cvalue, status, total, ret_status == STATUS_PENDING );
return ret_status;
}
/******************************************************************************
* NtWriteFileGather (NTDLL.@)
*/
NTSTATUS WINAPI NtWriteFileGather( HANDLE file, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, FILE_SEGMENT_ELEMENT *segments,
ULONG length, LARGE_INTEGER *offset, ULONG *key )
{
int result, unix_handle, needs_close;
unsigned int options;
NTSTATUS status;
ULONG pos = 0, total = 0;
enum server_fd_type type;
ULONG_PTR cvalue = apc ? 0 : (ULONG_PTR)apc_user;
BOOL send_completion = FALSE;
TRACE( "(%p,%p,%p,%p,%p,%p,0x%08x,%p,%p),partial stub!\n",
file, event, apc, apc_user, io, segments, length, offset, key );
if (length % page_size) return STATUS_INVALID_PARAMETER;
if (!io) return STATUS_ACCESS_VIOLATION;
status = server_get_unix_fd( file, FILE_WRITE_DATA, &unix_handle, &needs_close, &type, &options );
if (status) return status;
if ((type != FD_TYPE_FILE) ||
(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) ||
!(options & FILE_NO_INTERMEDIATE_BUFFERING))
{
status = STATUS_INVALID_PARAMETER;
goto done;
}
while (length)
{
if (offset && offset->QuadPart != FILE_USE_FILE_POINTER_POSITION)
result = pwrite( unix_handle, (char *)segments->Buffer + pos,
page_size - pos, offset->QuadPart + total );
else
result = write( unix_handle, (char *)segments->Buffer + pos, page_size - pos );
if (result == -1)
{
if (errno == EINTR) continue;
if (errno == EFAULT)
{
status = STATUS_INVALID_USER_BUFFER;
goto done;
}
status = errno_to_status( errno );
break;
}
if (!result)
{
status = STATUS_DISK_FULL;
break;
}
total += result;
length -= result;
if ((pos += result) == page_size)
{
pos = 0;
segments++;
}
}
send_completion = cvalue != 0;
done:
if (needs_close) close( unix_handle );
if (status == STATUS_SUCCESS)
{
io->u.Status = status;
io->Information = total;
TRACE("= SUCCESS (%u)\n", total);
if (event) NtSetEvent( event, NULL );
if (apc) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
(ULONG_PTR)apc_user, (ULONG_PTR)io, 0 );
}
else
{
TRACE("= 0x%08x\n", status);
if (status != STATUS_PENDING && event) NtResetEvent( event, NULL );
}
if (send_completion) add_completion( file, cvalue, status, total, FALSE );
return status;
}
dlls/ntdll/unix/loader.c
View file @ 888d66a2
......@@ -878,6 +878,8 @@ static struct unix_funcs unix_funcs =
NtQueryVirtualMemory,
NtQueueApcThread,
NtRaiseException,
NtReadFile,
NtReadFileScatter,
NtReadVirtualMemory,
NtReleaseKeyedEvent,
NtReleaseMutant,
......@@ -906,6 +908,8 @@ static struct unix_funcs unix_funcs =
NtWaitForKeyedEvent,
NtWaitForMultipleObjects,
NtWaitForSingleObject,
NtWriteFile,
NtWriteFileGather,
NtWriteVirtualMemory,
NtYieldExecution,
DbgUiIssueRemoteBreakin,
......@@ -939,10 +943,7 @@ static struct unix_funcs unix_funcs =
virtual_create_builtin_view,
virtual_alloc_thread_stack,
virtual_locked_server_call,
virtual_locked_read,
virtual_locked_pread,
virtual_locked_recvmsg,
virtual_check_buffer_for_read,
virtual_check_buffer_for_write,
virtual_release_address_space,
virtual_set_large_address_space,
......
dlls/ntdll/unix/unix_private.h
View file @ 888d66a2
......@@ -54,6 +54,8 @@ static inline struct ntdll_thread_data *ntdll_get_thread_data(void)
return (struct ntdll_thread_data *)&NtCurrentTeb()->GdiTebBatch;
}
static const UINT_PTR page_size = 0x1000;
NTSTATUS WINAPI KiUserExceptionDispatcher(EXCEPTION_RECORD*,CONTEXT*);
void WINAPI LdrInitializeThunk(CONTEXT*,void**,ULONG_PTR,ULONG_PTR);
......@@ -89,10 +91,7 @@ extern void CDECL virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info ) DECL
extern NTSTATUS CDECL virtual_create_builtin_view( void *module ) DECLSPEC_HIDDEN;
extern NTSTATUS CDECL virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size, SIZE_T *pthread_size ) DECLSPEC_HIDDEN;
extern unsigned int CDECL virtual_locked_server_call( void *req_ptr ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_read( int fd, void *addr, size_t size ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_pread( int fd, void *addr, size_t size, off_t offset ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_recvmsg( int fd, struct msghdr *hdr, int flags ) DECLSPEC_HIDDEN;
extern BOOL CDECL virtual_check_buffer_for_read( const void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
extern BOOL CDECL virtual_check_buffer_for_write( void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
extern void CDECL virtual_release_address_space(void) DECLSPEC_HIDDEN;
extern void CDECL virtual_set_large_address_space(void) DECLSPEC_HIDDEN;
......@@ -174,8 +173,11 @@ extern NTSTATUS virtual_alloc_teb( TEB **ret_teb ) DECLSPEC_HIDDEN;
extern void virtual_free_teb( TEB *teb ) DECLSPEC_HIDDEN;
extern void virtual_map_user_shared_data(void) DECLSPEC_HIDDEN;
extern NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err, BOOL on_signal_stack ) DECLSPEC_HIDDEN;
extern ssize_t virtual_locked_read( int fd, void *addr, size_t size ) DECLSPEC_HIDDEN;
extern ssize_t virtual_locked_pread( int fd, void *addr, size_t size, off_t offset ) DECLSPEC_HIDDEN;
extern BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size ) DECLSPEC_HIDDEN;
extern int virtual_handle_stack_fault( void *addr ) DECLSPEC_HIDDEN;
extern BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
extern SIZE_T virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern NTSTATUS virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern void virtual_set_force_exec( BOOL enable ) DECLSPEC_HIDDEN;
......
dlls/ntdll/unix/virtual.c
View file @ 888d66a2
......@@ -134,7 +134,6 @@ static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
static const UINT page_shift = 12;
static const UINT_PTR page_size = 0x1000;
static const UINT_PTR page_mask = 0xfff;
static const UINT_PTR granularity_mask = 0xffff;
......@@ -2866,7 +2865,7 @@ unsigned int CDECL virtual_locked_server_call( void *req_ptr )
/***********************************************************************
* virtual_locked_read
*/
ssize_t CDECL virtual_locked_read( int fd, void *addr, size_t size )
ssize_t virtual_locked_read( int fd, void *addr, size_t size )
{
sigset_t sigset;
BOOL has_write_watch = FALSE;
......@@ -2891,7 +2890,7 @@ ssize_t CDECL virtual_locked_read( int fd, void *addr, size_t size )
/***********************************************************************
* virtual_locked_pread
*/
ssize_t CDECL virtual_locked_pread( int fd, void *addr, size_t size, off_t offset )
ssize_t virtual_locked_pread( int fd, void *addr, size_t size, off_t offset )
{
sigset_t sigset;
BOOL has_write_watch = FALSE;
......@@ -3007,7 +3006,7 @@ int virtual_handle_stack_fault( void *addr )
*
* Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
*/
BOOL CDECL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
{
if (!size) return TRUE;
if (!ptr) return FALSE;
......
dlls/ntdll/unixlib.h
View file @ 888d66a2
......@@ -28,7 +28,7 @@ struct ldt_copy;
struct msghdr;
/* increment this when you change the function table */
#define NTDLL_UNIXLIB_VERSION 48
#define NTDLL_UNIXLIB_VERSION 49
struct unix_funcs
{
......@@ -159,6 +159,13 @@ struct unix_funcs
NTSTATUS (WINAPI *NtQueueApcThread)( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
ULONG_PTR arg2, ULONG_PTR arg3 );
NTSTATUS (WINAPI *NtRaiseException)( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance );
NTSTATUS (WINAPI *NtReadFile)( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, void *buffer, ULONG length,
LARGE_INTEGER *offset, ULONG *key );
NTSTATUS (WINAPI *NtReadFileScatter)( HANDLE file, HANDLE event, PIO_APC_ROUTINE apc,
void *apc_user, IO_STATUS_BLOCK *io,
FILE_SEGMENT_ELEMENT *segments, ULONG length,
LARGE_INTEGER *offset, ULONG *key );
NTSTATUS (WINAPI *NtReadVirtualMemory)( HANDLE process, const void *addr, void *buffer,
SIZE_T size, SIZE_T *bytes_read );
NTSTATUS (WINAPI *NtReleaseKeyedEvent)( HANDLE handle, const void *key,
......@@ -204,6 +211,13 @@ struct unix_funcs
const LARGE_INTEGER *timeout );
NTSTATUS (WINAPI *NtWaitForSingleObject)( HANDLE handle, BOOLEAN alertable,
const LARGE_INTEGER *timeout );
NTSTATUS (WINAPI *NtWriteFile)( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, const void *buffer, ULONG length,
LARGE_INTEGER *offset, ULONG *key );
NTSTATUS (WINAPI *NtWriteFileGather)( HANDLE file, HANDLE event, PIO_APC_ROUTINE apc,
void *apc_user, IO_STATUS_BLOCK *io,
FILE_SEGMENT_ELEMENT *segments, ULONG length,
LARGE_INTEGER *offset, ULONG *key );
NTSTATUS (WINAPI *NtWriteVirtualMemory)( HANDLE process, void *addr, const void *buffer,
SIZE_T size, SIZE_T *bytes_written );
NTSTATUS (WINAPI *NtYieldExecution)(void);
......@@ -253,10 +267,7 @@ struct unix_funcs
NTSTATUS (CDECL *virtual_create_builtin_view)( void *module );
NTSTATUS (CDECL *virtual_alloc_thread_stack)( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size, SIZE_T *pthread_size );
unsigned int (CDECL *virtual_locked_server_call)( void *req_ptr );
ssize_t (CDECL *virtual_locked_read)( int fd, void *addr, size_t size );
ssize_t (CDECL *virtual_locked_pread)( int fd, void *addr, size_t size, off_t offset );
ssize_t (CDECL *virtual_locked_recvmsg)( int fd, struct msghdr *hdr, int flags );
BOOL (CDECL *virtual_check_buffer_for_read)( const void *ptr, SIZE_T size );
BOOL (CDECL *virtual_check_buffer_for_write)( void *ptr, SIZE_T size );
void (CDECL *virtual_release_address_space)(void);
void (CDECL *virtual_set_large_address_space)(void);
......
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