src/vcl/ldp_socket_wrapper.h - fdio/vpp - Gitiles

 /*
  * Copyright (c) 2017-2019 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 /*
  * Copyright (c) 2005-2008 Jelmer Vernooij <jelmer@samba.org>
  * Copyright (C) 2006-2014 Stefan Metzmacher <metze@samba.org>
  * Copyright (C) 2013-2014 Andreas Schneider <asn@samba.org>
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * 3. Neither the name of the author nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  */

 /*
    Socket wrapper library. Passes all socket communication over
    unix domain sockets if the environment variable SOCKET_WRAPPER_DIR
    is set.
 */

 #ifndef included_ldp_socket_wrapper_h
 #define included_ldp_socket_wrapper_h

 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <sys/select.h>
 #include <sys/epoll.h>
 #include <poll.h>
 #include <sys/uio.h>
 #include <stdlib.h>
 #include <vcl/ldp.h>


 /* GCC have printf type attribute check. */
 #ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT
 #define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
 #else
 #define PRINTF_ATTRIBUTE(a,b)
 #endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */

 #define HAVE_CONSTRUCTOR_ATTRIBUTE
 #ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
 #define CONSTRUCTOR_ATTRIBUTE __attribute__ ((constructor))
 #else
 #define CONSTRUCTOR_ATTRIBUTE
 #endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */

 #define HAVE_DESTRUCTOR_ATTRIBUTE
 #ifdef HAVE_DESTRUCTOR_ATTRIBUTE
 #define DESTRUCTOR_ATTRIBUTE __attribute__ ((destructor))
 #else
 #define DESTRUCTOR_ATTRIBUTE
 #endif

 /*
  * IMPORTANT
  *
  * Functions especially from libc need to be loaded individually, you can't load
  * all at once or gdb will segfault at startup. The same applies to valgrind and
  * has probably something todo with with the linker.
  * So we need load each function at the point it is called the first time.
  */
 int libc_accept4 (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen,
 		  int flags);

 int libc_accept (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

 int libc_bind (int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen);

 int libc_close (int fd);

 int libc_connect (int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen);

 #if 0
 /* TBD: dup and dup2 to be implemented later */
 int libc_dup (int fd);

 int libc_dup2 (int oldfd, int newfd);
 #endif

 #ifdef HAVE_EVENTFD
 int libc_eventfd (int count, int flags);
 #endif

 int libc_vfcntl (int fd, int cmd, va_list ap);

 #ifdef HAVE_FCNTL64
 int libc_vfcntl64 (int fd, int cmd, va_list ap);
 #endif

 int libc_vioctl (int fd, int cmd, va_list ap);

 int libc_getpeername (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

 int libc_getsockname (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

 int
 libc_getsockopt (int sockfd,
 		 int level, int optname, void *optval, socklen_t * optlen);

 int libc_listen (int sockfd, int backlog);

 int libc_read (int fd, void *buf, size_t count);

 ssize_t libc_readv (int fd, const struct iovec *iov, int iovcnt);

 int libc_recv (int sockfd, void *buf, size_t len, int flags);

 int libc_recvfrom (int sockfd, void *buf, size_t len, int flags,
 		   __SOCKADDR_ARG src_addr, socklen_t *addrlen);

 int libc_recvmsg (int sockfd, struct msghdr *msg, int flags);

 #ifdef _GNU_SOURCE
 int libc_recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
 		   int flags, struct timespec *tmo);
 #endif

 int libc_send (int sockfd, const void *buf, size_t len, int flags);

 ssize_t libc_sendfile (int out_fd, int in_fd, off_t * offset, size_t len);

 int libc_sendmsg (int sockfd, const struct msghdr *msg, int flags);

 #ifdef _GNU_SOURCE
 int libc_sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
 		   int flags);
 #endif

 int libc_sendto (int sockfd, const void *buf, size_t len, int flags,
 		 __CONST_SOCKADDR_ARG dst_addr, socklen_t addrlen);

 int
 libc_setsockopt (int sockfd,
 		 int level, int optname, const void *optval,
 		 socklen_t optlen);

 int libc_socket (int domain, int type, int protocol);

 int libc_socketpair (int domain, int type, int protocol, int sv[2]);

 ssize_t libc_write (int fd, const void *buf, size_t count);

 ssize_t libc_writev (int fd, const struct iovec *iov, int iovcnt);

 int libc_shutdown (int fd, int how);

 int
 libc_select (int __nfds, fd_set * __restrict __readfds,
 	     fd_set * __restrict __writefds,
 	     fd_set * __restrict __exceptfds,
 	     struct timeval *__restrict __timeout);

 #ifdef __USE_XOPEN2K
 int
 libc_pselect (int __nfds, fd_set * __restrict __readfds,
 	      fd_set * __restrict __writefds,
 	      fd_set * __restrict __exceptfds,
 	      const struct timespec *__restrict __timeout,
 	      const __sigset_t * __restrict __sigmask);
 #endif

 int libc_epoll_create (int __size);

 int libc_epoll_create1 (int __flags);

 int libc_epoll_ctl (int __epfd, int __op, int __fd,
 		    struct epoll_event *__event);

 int libc_epoll_wait (int __epfd, struct epoll_event *__events,
 		     int __maxevents, int __timeout);

 int libc_epoll_pwait (int __epfd, struct epoll_event *__events,
 		      int __maxevents, int __timeout,
 		      const __sigset_t * __ss);

 int libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);

 #ifdef _GNU_SOURCE
 int libc_ppoll (struct pollfd *__fds, nfds_t __nfds,
 		const struct timespec *__timeout, const __sigset_t * __ss);
 #endif

 void swrap_constructor (void);

 void swrap_destructor (void);

 #endif /* included_ldp_socket_wrapper_h */

 /*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables:
  * eval: (c-set-style "gnu")
  * End:
  */
	/*
	* Copyright (c) 2017-2019 Cisco and/or its affiliates.
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at:
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	/*
	* Copyright (c) 2005-2008 Jelmer Vernooij <jelmer@samba.org>
	* Copyright (C) 2006-2014 Stefan Metzmacher <metze@samba.org>
	* Copyright (C) 2013-2014 Andreas Schneider <asn@samba.org>
	*
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* 3. Neither the name of the author nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	*/

	/*
	Socket wrapper library. Passes all socket communication over
	unix domain sockets if the environment variable SOCKET_WRAPPER_DIR
	is set.
	*/

	#ifndef included_ldp_socket_wrapper_h
	#define included_ldp_socket_wrapper_h

	#include <sys/types.h>
	#include <sys/socket.h>
	#include <sys/ioctl.h>
	#include <sys/select.h>
	#include <sys/epoll.h>
	#include <poll.h>
	#include <sys/uio.h>
	#include <stdlib.h>
	#include <vcl/ldp.h>


	/* GCC have printf type attribute check. */
	#ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT
	#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
	#else
	#define PRINTF_ATTRIBUTE(a,b)
	#endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */

	#define HAVE_CONSTRUCTOR_ATTRIBUTE
	#ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
	#define CONSTRUCTOR_ATTRIBUTE __attribute__ ((constructor))
	#else
	#define CONSTRUCTOR_ATTRIBUTE
	#endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */

	#define HAVE_DESTRUCTOR_ATTRIBUTE
	#ifdef HAVE_DESTRUCTOR_ATTRIBUTE
	#define DESTRUCTOR_ATTRIBUTE __attribute__ ((destructor))
	#else
	#define DESTRUCTOR_ATTRIBUTE
	#endif

	/*
	* IMPORTANT
	*
	* Functions especially from libc need to be loaded individually, you can't load
	* all at once or gdb will segfault at startup. The same applies to valgrind and
	* has probably something todo with with the linker.
	* So we need load each function at the point it is called the first time.
	*/
	int libc_accept4 (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen,
	int flags);

	int libc_accept (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

	int libc_bind (int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen);

	int libc_close (int fd);

	int libc_connect (int sockfd, __CONST_SOCKADDR_ARG addr, socklen_t addrlen);

	#if 0
	/* TBD: dup and dup2 to be implemented later */
	int libc_dup (int fd);

	int libc_dup2 (int oldfd, int newfd);
	#endif

	#ifdef HAVE_EVENTFD
	int libc_eventfd (int count, int flags);
	#endif

	int libc_vfcntl (int fd, int cmd, va_list ap);

	#ifdef HAVE_FCNTL64
	int libc_vfcntl64 (int fd, int cmd, va_list ap);
	#endif

	int libc_vioctl (int fd, int cmd, va_list ap);

	int libc_getpeername (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

	int libc_getsockname (int sockfd, __SOCKADDR_ARG addr, socklen_t *addrlen);

	int
	libc_getsockopt (int sockfd,
	int level, int optname, void optval, socklen_t optlen);

	int libc_listen (int sockfd, int backlog);

	int libc_read (int fd, void *buf, size_t count);

	ssize_t libc_readv (int fd, const struct iovec *iov, int iovcnt);

	int libc_recv (int sockfd, void *buf, size_t len, int flags);

	int libc_recvfrom (int sockfd, void *buf, size_t len, int flags,
	__SOCKADDR_ARG src_addr, socklen_t *addrlen);

	int libc_recvmsg (int sockfd, struct msghdr *msg, int flags);

	#ifdef _GNU_SOURCE
	int libc_recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
	int flags, struct timespec *tmo);
	#endif

	int libc_send (int sockfd, const void *buf, size_t len, int flags);

	ssize_t libc_sendfile (int out_fd, int in_fd, off_t * offset, size_t len);

	int libc_sendmsg (int sockfd, const struct msghdr *msg, int flags);

	#ifdef _GNU_SOURCE
	int libc_sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen,
	int flags);
	#endif

	int libc_sendto (int sockfd, const void *buf, size_t len, int flags,
	__CONST_SOCKADDR_ARG dst_addr, socklen_t addrlen);

	int
	libc_setsockopt (int sockfd,
	int level, int optname, const void *optval,
	socklen_t optlen);

	int libc_socket (int domain, int type, int protocol);

	int libc_socketpair (int domain, int type, int protocol, int sv[2]);

	ssize_t libc_write (int fd, const void *buf, size_t count);

	ssize_t libc_writev (int fd, const struct iovec *iov, int iovcnt);

	int libc_shutdown (int fd, int how);

	int
	libc_select (int __nfds, fd_set * __restrict __readfds,
	fd_set * __restrict __writefds,
	fd_set * __restrict __exceptfds,
	struct timeval *__restrict __timeout);

	#ifdef __USE_XOPEN2K
	int
	libc_pselect (int __nfds, fd_set * __restrict __readfds,
	fd_set * __restrict __writefds,
	fd_set * __restrict __exceptfds,
	const struct timespec *__restrict __timeout,
	const __sigset_t * __restrict __sigmask);
	#endif

	int libc_epoll_create (int __size);

	int libc_epoll_create1 (int __flags);

	int libc_epoll_ctl (int __epfd, int __op, int __fd,
	struct epoll_event *__event);

	int libc_epoll_wait (int __epfd, struct epoll_event *__events,
	int __maxevents, int __timeout);

	int libc_epoll_pwait (int __epfd, struct epoll_event *__events,
	int __maxevents, int __timeout,
	const __sigset_t * __ss);

	int libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);

	#ifdef _GNU_SOURCE
	int libc_ppoll (struct pollfd *__fds, nfds_t __nfds,
	const struct timespec __timeout, const __sigset_t __ss);
	#endif

	void swrap_constructor (void);

	void swrap_destructor (void);

	#endif /* included_ldp_socket_wrapper_h */

	/*
	* fd.io coding-style-patch-verification: ON
	*
	* Local Variables:
	* eval: (c-set-style "gnu")
	* End:
	*/