2 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 * Copyright (c) 2005-2008 Jelmer Vernooij <jelmer@samba.org>
18 * Copyright (C) 2006-2014 Stefan Metzmacher <metze@samba.org>
19 * Copyright (C) 2013-2014 Andreas Schneider <asn@samba.org>
21 * All rights reserved.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the above copyright
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44 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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53 Socket wrapper library. Passes all socket communication over
54 unix domain sockets if the environment variable SOCKET_WRAPPER_DIR
58 #ifndef included_ldp_socket_wrapper_h
59 #define included_ldp_socket_wrapper_h
61 #include <sys/types.h>
62 #include <sys/socket.h>
63 #include <sys/ioctl.h>
64 #include <sys/select.h>
65 #include <sys/epoll.h>
72 /* GCC have printf type attribute check. */
73 #ifdef HAVE_FUNCTION_ATTRIBUTE_FORMAT
74 #define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
76 #define PRINTF_ATTRIBUTE(a,b)
77 #endif /* HAVE_FUNCTION_ATTRIBUTE_FORMAT */
79 #define HAVE_CONSTRUCTOR_ATTRIBUTE
80 #ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
81 #define CONSTRUCTOR_ATTRIBUTE __attribute__ ((constructor))
83 #define CONSTRUCTOR_ATTRIBUTE
84 #endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */
86 #define HAVE_DESTRUCTOR_ATTRIBUTE
87 #ifdef HAVE_DESTRUCTOR_ATTRIBUTE
88 #define DESTRUCTOR_ATTRIBUTE __attribute__ ((destructor))
90 #define DESTRUCTOR_ATTRIBUTE
96 * Functions especially from libc need to be loaded individually, you can't load
97 * all at once or gdb will segfault at startup. The same applies to valgrind and
98 * has probably something todo with with the linker.
99 * So we need load each function at the point it is called the first time.
101 int libc_accept4 (int sockfd, struct sockaddr *addr, socklen_t * addrlen,
104 int libc_accept (int sockfd, struct sockaddr *addr, socklen_t * addrlen);
106 int libc_bind (int sockfd, const struct sockaddr *addr, socklen_t addrlen);
108 int libc_close (int fd);
110 int libc_connect (int sockfd, const struct sockaddr *addr, socklen_t addrlen);
113 /* TBD: dup and dup2 to be implemented later */
114 int libc_dup (int fd);
116 int libc_dup2 (int oldfd, int newfd);
120 int libc_eventfd (int count, int flags);
123 int libc_vfcntl (int fd, int cmd, va_list ap);
126 int libc_vfcntl64 (int fd, int cmd, va_list ap);
129 int libc_vioctl (int fd, int cmd, va_list ap);
131 int libc_getpeername (int sockfd, struct sockaddr *addr, socklen_t * addrlen);
133 int libc_getsockname (int sockfd, struct sockaddr *addr, socklen_t * addrlen);
136 libc_getsockopt (int sockfd,
137 int level, int optname, void *optval, socklen_t * optlen);
139 int libc_listen (int sockfd, int backlog);
141 int libc_read (int fd, void *buf, size_t count);
143 ssize_t libc_readv (int fd, const struct iovec *iov, int iovcnt);
145 int libc_recv (int sockfd, void *buf, size_t len, int flags);
148 libc_recvfrom (int sockfd,
151 int flags, struct sockaddr *src_addr, socklen_t * addrlen);
153 int libc_recvmsg (int sockfd, struct msghdr *msg, int flags);
155 int libc_send (int sockfd, const void *buf, size_t len, int flags);
157 ssize_t libc_sendfile (int out_fd, int in_fd, off_t * offset, size_t len);
159 int libc_sendmsg (int sockfd, const struct msghdr *msg, int flags);
162 libc_sendto (int sockfd,
165 int flags, const struct sockaddr *dst_addr, socklen_t addrlen);
168 libc_setsockopt (int sockfd,
169 int level, int optname, const void *optval,
172 int libc_socket (int domain, int type, int protocol);
174 int libc_socketpair (int domain, int type, int protocol, int sv[2]);
176 ssize_t libc_write (int fd, const void *buf, size_t count);
178 ssize_t libc_writev (int fd, const struct iovec *iov, int iovcnt);
180 int libc_shutdown (int fd, int how);
183 libc_select (int __nfds, fd_set * __restrict __readfds,
184 fd_set * __restrict __writefds,
185 fd_set * __restrict __exceptfds,
186 struct timeval *__restrict __timeout);
190 libc_pselect (int __nfds, fd_set * __restrict __readfds,
191 fd_set * __restrict __writefds,
192 fd_set * __restrict __exceptfds,
193 const struct timespec *__restrict __timeout,
194 const __sigset_t * __restrict __sigmask);
197 int libc_epoll_create (int __size);
199 int libc_epoll_create1 (int __flags);
201 int libc_epoll_ctl (int __epfd, int __op, int __fd,
202 struct epoll_event *__event);
204 int libc_epoll_wait (int __epfd, struct epoll_event *__events,
205 int __maxevents, int __timeout);
207 int libc_epoll_pwait (int __epfd, struct epoll_event *__events,
208 int __maxevents, int __timeout,
209 const __sigset_t * __ss);
211 int libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
214 int libc_ppoll (struct pollfd *__fds, nfds_t __nfds,
215 const struct timespec *__timeout, const __sigset_t * __ss);
218 void swrap_constructor (void);
220 void swrap_destructor (void);
222 #endif /* included_ldp_socket_wrapper_h */
225 * fd.io coding-style-patch-verification: ON
228 * eval: (c-set-style "gnu")