/* * 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 #define HAVE_ADDRESS_SANITIZER_ATTRIBUTE #ifdef HAVE_ADDRESS_SANITIZER_ATTRIBUTE #define DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE __attribute__((no_sanitize_address)) #else #define DO_NOT_SANITIZE_ADDRESS_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, struct sockaddr *addr, socklen_t * addrlen, int flags); int libc_accept (int sockfd, struct sockaddr *addr, socklen_t * addrlen); int libc_bind (int sockfd, const struct sockaddr *addr, socklen_t addrlen); int libc_close (int fd); int libc_connect (int sockfd, const struct sockaddr *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 DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int libc_vfcntl (int fd, int cmd, va_list ap); DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int libc_vioctl (int fd, int cmd, va_list ap); int libc_getpeername (int sockfd, struct sockaddr *addr, socklen_t * addrlen); int libc_getsockname (int sockfd, struct sockaddr *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, struct sockaddr *src_addr, socklen_t * addrlen); int libc_recvmsg (int sockfd, struct msghdr *msg, int flags); 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); int libc_sendto (int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *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 __USE_GNU 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: */