Markus Armbruster
c9de868d55
Use prefix w32 instead of posix: Rename posixfile.c, posixio.c to w32file.c, w32io.c. Rename posix_accept(), posix_bind(), posix_close(), posix_fd2socket(), posix_listen(), posix_mkdir(), posix_setsockopt(), posix_shutdown(), posix_socket() to w32_accept(), w32_bind(), w32_fd2socket(), w32_list(), w32_mkdir(), w32_setsockopt(), w32_shutdown(), w32_socket().
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*
|
|
* Empire - A multi-player, client/server Internet based war game.
|
|
* Copyright (C) 1986-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
|
|
* Ken Stevens, Steve McClure
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* ---
|
|
*
|
|
* See files README, COPYING and CREDITS in the root of the source
|
|
* tree for related information and legal notices. It is expected
|
|
* that future projects/authors will amend these files as needed.
|
|
*
|
|
* ---
|
|
*
|
|
* w32io.c: POSIX I/O emulation layer for Windows
|
|
*
|
|
* Known contributors to this file:
|
|
* Ron Koenderink, 2007
|
|
* Markus Armbruster, 2007-2009
|
|
*/
|
|
|
|
/*
|
|
* POSIX sockets are file descriptors. Windows sockets are something
|
|
* else, with a separate set of functions to operate on them. To
|
|
* present a more POSIX-like interface to our application code, we
|
|
* provide a compatibility layer that wraps file descriptors around
|
|
* sockets.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <errno.h>
|
|
#include <io.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "misc.h"
|
|
#include "sys/uio.h"
|
|
|
|
int (*w32_close_function)(int) = _close;
|
|
int (*w32_read_function)(int, void *, unsigned) = _read;
|
|
int (*w32_write_function)(int, const void *, unsigned) = _write;
|
|
|
|
/*
|
|
* POSIX equivalent for readv
|
|
* Modelled after the GNU's libc/sysdeps/posix/readv.c
|
|
*/
|
|
ssize_t
|
|
readv(int fd, const struct iovec *iov, int iovcnt)
|
|
{
|
|
int i;
|
|
unsigned char *buffer, *buffer_location;
|
|
size_t total_bytes = 0;
|
|
int bytes_read;
|
|
size_t bytes_left;
|
|
|
|
for (i = 0; i < iovcnt; i++) {
|
|
total_bytes += iov[i].iov_len;
|
|
}
|
|
|
|
buffer = malloc(total_bytes);
|
|
if (buffer == NULL && total_bytes != 0) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
bytes_read = read(fd, buffer, total_bytes);
|
|
if (bytes_read <= 0) {
|
|
free(buffer);
|
|
return -1;
|
|
}
|
|
|
|
bytes_left = bytes_read;
|
|
buffer_location = buffer;
|
|
for (i = 0; i < iovcnt; i++) {
|
|
size_t copy = MIN(iov[i].iov_len, bytes_left);
|
|
|
|
memcpy(iov[i].iov_base, buffer_location, copy);
|
|
|
|
buffer_location += copy;
|
|
bytes_left -= copy;
|
|
if (bytes_left == 0)
|
|
break;
|
|
}
|
|
|
|
free(buffer);
|
|
|
|
return bytes_read;
|
|
}
|
|
|
|
/*
|
|
* POSIX equivalent for writev
|
|
* Modelled after the GNU's libc/sysdeps/posix/writev.c
|
|
*/
|
|
ssize_t
|
|
writev(int fd, const struct iovec *iov, int iovcnt)
|
|
{
|
|
int i;
|
|
unsigned char *buffer, *buffer_location;
|
|
size_t total_bytes = 0;
|
|
int bytes_written;
|
|
|
|
for (i = 0; i < iovcnt; i++)
|
|
total_bytes += iov[i].iov_len;
|
|
|
|
buffer = malloc(total_bytes);
|
|
if (buffer == NULL && total_bytes != 0) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
buffer_location = buffer;
|
|
for (i = 0; i < iovcnt; i++) {
|
|
memcpy(buffer_location, iov[i].iov_base, iov[i].iov_len);
|
|
buffer_location += iov[i].iov_len;
|
|
}
|
|
|
|
bytes_written = write(fd, buffer, total_bytes);
|
|
|
|
free(buffer);
|
|
|
|
if (bytes_written <= 0)
|
|
return -1;
|
|
return bytes_written;
|
|
}
|