126 lines
2.9 KiB
C++
126 lines
2.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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/*
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* QEMU compatibility functions
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "slirp.h"
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#if BX_NETWORKING && BX_NETMOD_SLIRP_NEW
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void pstrcpy(char *buf, int buf_size, const char *str)
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{
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int c;
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char *q = buf;
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if (buf_size <= 0)
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return;
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for(;;) {
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c = *str++;
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if (c == 0 || q >= buf + buf_size - 1)
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break;
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*q++ = c;
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}
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*q = '\0';
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}
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void qemu_set_nonblock(int fd)
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{
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#ifdef WIN32
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unsigned long opt = 1;
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ioctlsocket(fd, FIONBIO, &opt);
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#else
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int f;
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f = fcntl(fd, F_GETFL);
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fcntl(fd, F_SETFL, f | O_NONBLOCK);
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#endif
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}
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#ifdef WIN32
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int inet_aton(const char *cp, struct in_addr *ia)
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{
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uint32_t addr = inet_addr(cp);
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if (addr == 0xffffffff) {
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return 0;
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}
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ia->s_addr = addr;
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return 1;
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}
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#endif
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int socket_set_fast_reuse(int fd)
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{
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#ifndef WIN32
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int val = 1, ret;
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ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
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(const char *)&val, sizeof(val));
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assert(ret == 0);
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return ret;
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#else
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return 0;
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#endif
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}
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int socket_set_nodelay(int fd)
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{
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int v = 1;
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return qemu_setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
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}
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void qemu_set_cloexec(int fd)
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{
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#ifndef WIN32
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int f;
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f = fcntl(fd, F_GETFD);
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fcntl(fd, F_SETFD, f | FD_CLOEXEC);
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#endif
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}
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/*
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* Opens a socket with FD_CLOEXEC set
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*/
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int qemu_socket(int domain, int type, int protocol)
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{
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int ret;
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#ifdef SOCK_CLOEXEC
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ret = socket(domain, type | SOCK_CLOEXEC, protocol);
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if (ret != -1 || errno != EINVAL) {
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return ret;
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}
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#endif
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ret = socket(domain, type, protocol);
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if (ret >= 0) {
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qemu_set_cloexec(ret);
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}
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return ret;
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}
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#endif
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