fdbfba8cbf
QEMU wraps the socket functions in os-win32.h, but in commit
a9d8b3ec43, the header inclusion was dropped,
breaking libslirp on Windows.
There are already a few socket functions that are wrapped in libslirp,
with "slirp_" prefix, but many of them are missing, and we are going
to wrap the missing functions in a second patch.
Using "slirp_" prefix avoids the conflict with socket function #define
wrappers in QEMU os-win32.h, but they are quite intrusive. In the end,
the functions should behave the same as original one, but with errno
being set. To avoid the churn, and potential confusion, remove the
"slirp_" prefix. A series of #undef is necessary until libslirp is
made standalone to prevent the #define conflict with QEMU.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190212160953.29051-2-marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
/*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010-2019 Red Hat, Inc.
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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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#ifndef UTIL_H_
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#define UTIL_H_
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#include <stdlib.h>
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#include <stdio.h>
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#include <assert.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <inttypes.h>
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#ifdef _WIN32
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#include <winsock2.h>
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#include <windows.h>
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#else
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#include <sys/socket.h>
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#include <netinet/tcp.h>
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#include <netinet/in.h>
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#endif
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#if defined(_WIN32)
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# define SLIRP_PACKED __attribute__((gcc_struct, packed))
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#else
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# define SLIRP_PACKED __attribute__((packed))
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#endif
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#ifndef DIV_ROUND_UP
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#endif
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#ifndef container_of
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#define container_of(ptr, type, member) __extension__ ({ \
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void *__mptr = (void *)(ptr); \
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((type *)(__mptr - offsetof(type, member))); })
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#endif
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#if defined(_WIN32) /* CONFIG_IOVEC */
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# if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */
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struct iovec {
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void *iov_base;
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size_t iov_len;
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};
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# endif
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#else
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#include <sys/uio.h>
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#endif
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#define SCALE_MS 1000000
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#define ETH_ALEN 6
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#define ETH_HLEN 14
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#define ETH_P_IP (0x0800) /* Internet Protocol packet */
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#define ETH_P_ARP (0x0806) /* Address Resolution packet */
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#define ETH_P_IPV6 (0x86dd)
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#define ETH_P_VLAN (0x8100)
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#define ETH_P_DVLAN (0x88a8)
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#define ETH_P_NCSI (0x88f8)
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#define ETH_P_UNKNOWN (0xffff)
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/* FIXME: remove me when made standalone */
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#ifdef _WIN32
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#undef closesocket
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#undef getsockopt
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#undef ioctlsocket
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#undef recv
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#undef setsockopt
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#endif
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#ifdef _WIN32
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#define closesocket slirp_closesocket
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int slirp_closesocket(int fd);
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#define ioctlsocket slirp_ioctlsocket
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int slirp_ioctlsocket(int fd, int req, void *val);
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#define getsockopt(sockfd, level, optname, optval, optlen) \
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getsockopt(sockfd, level, optname, (void *)optval, optlen)
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#define setsockopt(sockfd, level, optname, optval, optlen) \
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setsockopt(sockfd, level, optname, (const void *)optval, optlen)
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#define recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
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int inet_aton(const char *cp, struct in_addr *ia);
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#else
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#define closesocket(s) close(s)
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#define ioctlsocket(s, r, v) ioctl(s, r, v)
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#endif
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int slirp_socket(int domain, int type, int protocol);
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void slirp_set_nonblock(int fd);
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static inline int slirp_socket_set_nodelay(int fd)
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{
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int v = 1;
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return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
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}
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static inline int slirp_socket_set_fast_reuse(int fd)
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{
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#ifndef _WIN32
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int v = 1;
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return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v));
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#else
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/* Enabling the reuse of an endpoint that was used by a socket still in
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* TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
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* fast reuse is the default and SO_REUSEADDR does strange things. So we
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* don't have to do anything here. More info can be found at:
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* http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
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return 0;
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#endif
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}
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void slirp_pstrcpy(char *buf, int buf_size, const char *str);
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#endif
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