+++ /dev/null
-/*
- * Copyright (c) 2016 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.
-*/
-
-#include <signal.h>
-#include <dlfcn.h>
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <pthread.h>
-
-#include <libvcl-ldpreload/vcom_socket_wrapper.h>
-
-
-enum swrap_dbglvl_e
-{
- SWRAP_LOG_ERROR = 0,
- SWRAP_LOG_WARN,
- SWRAP_LOG_DEBUG,
- SWRAP_LOG_TRACE
-};
-
-
-/* Macros for accessing mutexes */
-#define SWRAP_LOCK(m) do { \
- pthread_mutex_lock(&(m ## _mutex)); \
-} while(0)
-
-#define SWRAP_UNLOCK(m) do { \
- pthread_mutex_unlock(&(m ## _mutex)); \
-} while(0)
-
-/* Add new global locks here please */
-#define SWRAP_LOCK_ALL \
- SWRAP_LOCK(libc_symbol_binding); \
-
-#define SWRAP_UNLOCK_ALL \
- SWRAP_UNLOCK(libc_symbol_binding); \
-
-
-
-/* The mutex for accessing the global libc.symbols */
-static pthread_mutex_t libc_symbol_binding_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-/* Function prototypes */
-
-#ifdef NDEBUG
-#define SWRAP_LOG(...)
-#else
-static void
-swrap_log (enum swrap_dbglvl_e dbglvl, const char *func,
- const char *format, ...)
-PRINTF_ATTRIBUTE (3, 4);
-#define SWRAP_LOG(dbglvl, ...) swrap_log((dbglvl), __func__, __VA_ARGS__)
-
- static void
- swrap_log (enum swrap_dbglvl_e dbglvl,
- const char *func, const char *format, ...)
-{
- char buffer[1024];
- va_list va;
- unsigned int lvl = SWRAP_LOG_WARN;
-
- va_start (va, format);
- vsnprintf (buffer, sizeof (buffer), format, va);
- va_end (va);
-
- if (lvl >= dbglvl)
- {
- switch (dbglvl)
- {
- case SWRAP_LOG_ERROR:
- fprintf (stderr,
- "SWRAP_ERROR(%d) - %s: %s\n",
- (int) getpid (), func, buffer);
- break;
- case SWRAP_LOG_WARN:
- fprintf (stderr,
- "SWRAP_WARN(%d) - %s: %s\n",
- (int) getpid (), func, buffer);
- break;
- case SWRAP_LOG_DEBUG:
- fprintf (stderr,
- "SWRAP_DEBUG(%d) - %s: %s\n",
- (int) getpid (), func, buffer);
- break;
- case SWRAP_LOG_TRACE:
- fprintf (stderr,
- "SWRAP_TRACE(%d) - %s: %s\n",
- (int) getpid (), func, buffer);
- break;
- }
- }
-}
-#endif
-
-
-/*********************************************************
- * SWRAP LOADING LIBC FUNCTIONS
- *********************************************************/
-
-#ifdef HAVE_ACCEPT4
-typedef int (*__libc_accept4) (int sockfd,
- struct sockaddr * addr,
- socklen_t * addrlen, int flags);
-#else
-typedef int (*__libc_accept) (int sockfd,
- struct sockaddr * addr, socklen_t * addrlen);
-#endif
-typedef int (*__libc_bind) (int sockfd,
- const struct sockaddr * addr, socklen_t addrlen);
-typedef int (*__libc_close) (int fd);
-typedef int (*__libc_connect) (int sockfd,
- const struct sockaddr * addr,
- socklen_t addrlen);
-
-#if 0
-/* TBD: dup and dup2 to be implemented later */
-typedef int (*__libc_dup) (int fd);
-typedef int (*__libc_dup2) (int oldfd, int newfd);
-#endif
-
-typedef int (*__libc_fcntl) (int fd, int cmd, ...);
-typedef FILE *(*__libc_fopen) (const char *name, const char *mode);
-#ifdef HAVE_FOPEN64
-typedef FILE *(*__libc_fopen64) (const char *name, const char *mode);
-#endif
-#ifdef HAVE_EVENTFD
-typedef int (*__libc_eventfd) (int count, int flags);
-#endif
-typedef int (*__libc_getpeername) (int sockfd,
- struct sockaddr * addr,
- socklen_t * addrlen);
-typedef int (*__libc_getsockname) (int sockfd,
- struct sockaddr * addr,
- socklen_t * addrlen);
-typedef int (*__libc_getsockopt) (int sockfd,
- int level,
- int optname,
- void *optval, socklen_t * optlen);
-typedef int (*__libc_ioctl) (int d, unsigned long int request, ...);
-typedef int (*__libc_listen) (int sockfd, int backlog);
-typedef int (*__libc_open) (const char *pathname, int flags, mode_t mode);
-#ifdef HAVE_OPEN64
-typedef int (*__libc_open64) (const char *pathname, int flags, mode_t mode);
-#endif /* HAVE_OPEN64 */
-typedef int (*__libc_openat) (int dirfd, const char *path, int flags, ...);
-typedef int (*__libc_pipe) (int pipefd[2]);
-typedef int (*__libc_read) (int fd, void *buf, size_t count);
-typedef ssize_t (*__libc_readv) (int fd, const struct iovec * iov,
- int iovcnt);
-typedef int (*__libc_recv) (int sockfd, void *buf, size_t len, int flags);
-typedef int (*__libc_recvfrom) (int sockfd,
- void *buf,
- size_t len,
- int flags,
- struct sockaddr * src_addr,
- socklen_t * addrlen);
-typedef int (*__libc_recvmsg) (int sockfd, const struct msghdr * msg,
- int flags);
-typedef int (*__libc_send) (int sockfd, const void *buf, size_t len,
- int flags);
-typedef int (*__libc_sendmsg) (int sockfd, const struct msghdr * msg,
- int flags);
-typedef int (*__libc_sendto) (int sockfd, const void *buf, size_t len,
- int flags, const struct sockaddr * dst_addr,
- socklen_t addrlen);
-typedef int (*__libc_setsockopt) (int sockfd, int level, int optname,
- const void *optval, socklen_t optlen);
-#ifdef HAVE_SIGNALFD
-typedef int (*__libc_signalfd) (int fd, const sigset_t * mask, int flags);
-#endif
-typedef int (*__libc_socket) (int domain, int type, int protocol);
-typedef int (*__libc_socketpair) (int domain, int type, int protocol,
- int sv[2]);
-#ifdef HAVE_TIMERFD_CREATE
-typedef int (*__libc_timerfd_create) (int clockid, int flags);
-#endif
-typedef ssize_t (*__libc_write) (int fd, const void *buf, size_t count);
-typedef ssize_t (*__libc_writev) (int fd, const struct iovec * iov,
- int iovcnt);
-
-typedef int (*__libc_shutdown) (int fd, int how);
-
-typedef int (*__libc_select) (int __nfds, fd_set * __restrict __readfds,
- fd_set * __restrict __writefds,
- fd_set * __restrict __exceptfds,
- struct timeval * __restrict __timeout);
-
-#ifdef __USE_XOPEN2K
-typedef 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
-
-typedef int (*__libc_epoll_create) (int __size);
-
-typedef int (*__libc_epoll_create1) (int __flags);
-
-typedef int (*__libc_epoll_ctl) (int __epfd, int __op, int __fd,
- struct epoll_event * __event);
-
-typedef int (*__libc_epoll_wait) (int __epfd, struct epoll_event * __events,
- int __maxevents, int __timeout);
-
-typedef int (*__libc_epoll_pwait) (int __epfd, struct epoll_event * __events,
- int __maxevents, int __timeout,
- const __sigset_t * __ss);
-
-typedef int (*__libc_poll) (struct pollfd * __fds, nfds_t __nfds,
- int __timeout);
-
-#ifdef __USE_GNU
-typedef int (*__libc_ppoll) (struct pollfd * __fds, nfds_t __nfds,
- const struct timespec * __timeout,
- const __sigset_t * __ss);
-#endif
-
-
-#define SWRAP_SYMBOL_ENTRY(i) \
- union { \
- __libc_##i f; \
- void *obj; \
- } _libc_##i
-
-struct swrap_libc_symbols
-{
-#ifdef HAVE_ACCEPT4
- SWRAP_SYMBOL_ENTRY (accept4);
-#else
- SWRAP_SYMBOL_ENTRY (accept);
-#endif
- SWRAP_SYMBOL_ENTRY (bind);
- SWRAP_SYMBOL_ENTRY (close);
- SWRAP_SYMBOL_ENTRY (connect);
-#if 0
- /* TBD: dup and dup2 to be implemented later */
- SWRAP_SYMBOL_ENTRY (dup);
- SWRAP_SYMBOL_ENTRY (dup2);
-#endif
- SWRAP_SYMBOL_ENTRY (fcntl);
- SWRAP_SYMBOL_ENTRY (fopen);
-#ifdef HAVE_FOPEN64
- SWRAP_SYMBOL_ENTRY (fopen64);
-#endif
-#ifdef HAVE_EVENTFD
- SWRAP_SYMBOL_ENTRY (eventfd);
-#endif
- SWRAP_SYMBOL_ENTRY (getpeername);
- SWRAP_SYMBOL_ENTRY (getsockname);
- SWRAP_SYMBOL_ENTRY (getsockopt);
- SWRAP_SYMBOL_ENTRY (ioctl);
- SWRAP_SYMBOL_ENTRY (listen);
- SWRAP_SYMBOL_ENTRY (open);
-#ifdef HAVE_OPEN64
- SWRAP_SYMBOL_ENTRY (open64);
-#endif
- SWRAP_SYMBOL_ENTRY (openat);
- SWRAP_SYMBOL_ENTRY (pipe);
- SWRAP_SYMBOL_ENTRY (read);
- SWRAP_SYMBOL_ENTRY (readv);
- SWRAP_SYMBOL_ENTRY (recv);
- SWRAP_SYMBOL_ENTRY (recvfrom);
- SWRAP_SYMBOL_ENTRY (recvmsg);
- SWRAP_SYMBOL_ENTRY (send);
- SWRAP_SYMBOL_ENTRY (sendmsg);
- SWRAP_SYMBOL_ENTRY (sendto);
- SWRAP_SYMBOL_ENTRY (setsockopt);
-#ifdef HAVE_SIGNALFD
- SWRAP_SYMBOL_ENTRY (signalfd);
-#endif
- SWRAP_SYMBOL_ENTRY (socket);
- SWRAP_SYMBOL_ENTRY (socketpair);
-#ifdef HAVE_TIMERFD_CREATE
- SWRAP_SYMBOL_ENTRY (timerfd_create);
-#endif
- SWRAP_SYMBOL_ENTRY (write);
- SWRAP_SYMBOL_ENTRY (writev);
-
- SWRAP_SYMBOL_ENTRY (shutdown);
- SWRAP_SYMBOL_ENTRY (select);
-#ifdef __USE_XOPEN2K
- SWRAP_SYMBOL_ENTRY (pselect);
-#endif
- SWRAP_SYMBOL_ENTRY (epoll_create);
- SWRAP_SYMBOL_ENTRY (epoll_create1);
- SWRAP_SYMBOL_ENTRY (epoll_ctl);
- SWRAP_SYMBOL_ENTRY (epoll_wait);
- SWRAP_SYMBOL_ENTRY (epoll_pwait);
- SWRAP_SYMBOL_ENTRY (poll);
-#ifdef __USE_GNU
- SWRAP_SYMBOL_ENTRY (ppoll);
-#endif
-};
-
-struct swrap
-{
- struct
- {
- void *handle;
- void *socket_handle;
- struct swrap_libc_symbols symbols;
- } libc;
-};
-
-static struct swrap swrap;
-
-#define LIBC_NAME "libc.so"
-
-enum swrap_lib
-{
- SWRAP_LIBC,
-};
-
-#ifndef NDEBUG
-static const char *
-swrap_str_lib (enum swrap_lib lib)
-{
- switch (lib)
- {
- case SWRAP_LIBC:
- return "libc";
- }
-
- /* Compiler would warn us about unhandled enum value if we get here */
- return "unknown";
-}
-#endif
-
-static void *
-swrap_load_lib_handle (enum swrap_lib lib)
-{
- int flags = RTLD_LAZY;
- void *handle = NULL;
- int i;
-
-#ifdef RTLD_DEEPBIND
- flags |= RTLD_DEEPBIND;
-#endif
-
- switch (lib)
- {
- case SWRAP_LIBC:
- handle = swrap.libc.handle;
-#ifdef LIBC_SO
- if (handle == NULL)
- {
- handle = dlopen (LIBC_SO, flags);
-
- swrap.libc.handle = handle;
- }
-#endif
- if (handle == NULL)
- {
- for (i = 10; i >= 0; i--)
- {
- char soname[256] = { 0 };
-
- snprintf (soname, sizeof (soname), "libc.so.%d", i);
- handle = dlopen (soname, flags);
- if (handle != NULL)
- {
- break;
- }
- }
-
- swrap.libc.handle = handle;
- }
- break;
- }
-
- if (handle == NULL)
- {
- SWRAP_LOG (SWRAP_LOG_ERROR,
- "Failed to dlopen library: %s\n", dlerror ());
- exit (-1);
- }
-
- return handle;
-}
-
-static void *
-_swrap_bind_symbol (enum swrap_lib lib, const char *fn_name)
-{
- void *handle;
- void *func;
-
- handle = swrap_load_lib_handle (lib);
-
- func = dlsym (handle, fn_name);
- if (func == NULL)
- {
- SWRAP_LOG (SWRAP_LOG_ERROR,
- "Failed to find %s: %s\n", fn_name, dlerror ());
- exit (-1);
- }
-
- SWRAP_LOG (SWRAP_LOG_TRACE,
- "Loaded %s from %s", fn_name, swrap_str_lib (lib));
-
- return func;
-}
-
-#define swrap_bind_symbol_libc(sym_name) \
- SWRAP_LOCK(libc_symbol_binding); \
- if (swrap.libc.symbols._libc_##sym_name.obj == NULL) { \
- swrap.libc.symbols._libc_##sym_name.obj = \
- _swrap_bind_symbol(SWRAP_LIBC, #sym_name); \
- } \
- SWRAP_UNLOCK(libc_symbol_binding)
-
-/*
- * 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.
- */
-#ifdef HAVE_ACCEPT4
-int
-libc_accept4 (int sockfd,
- struct sockaddr *addr, socklen_t * addrlen, int flags)
-{
- swrap_bind_symbol_libc (accept4);
-
- return swrap.libc.symbols._libc_accept4.f (sockfd, addr, addrlen, flags);
-}
-
-#else /* HAVE_ACCEPT4 */
-
-int
-libc_accept (int sockfd, struct sockaddr *addr, socklen_t * addrlen)
-{
- swrap_bind_symbol_libc (accept);
-
- return swrap.libc.symbols._libc_accept.f (sockfd, addr, addrlen);
-}
-#endif /* HAVE_ACCEPT4 */
-
-int
-libc_bind (int sockfd, const struct sockaddr *addr, socklen_t addrlen)
-{
- swrap_bind_symbol_libc (bind);
-
- return swrap.libc.symbols._libc_bind.f (sockfd, addr, addrlen);
-}
-
-int
-libc_close (int fd)
-{
- swrap_bind_symbol_libc (close);
-
- return swrap.libc.symbols._libc_close.f (fd);
-}
-
-int
-libc_connect (int sockfd, const struct sockaddr *addr, socklen_t addrlen)
-{
- swrap_bind_symbol_libc (connect);
-
- return swrap.libc.symbols._libc_connect.f (sockfd, addr, addrlen);
-}
-
-#if 0
-/* TBD: dup and dup2 to be implemented later */
-int
-libc_dup (int fd)
-{
- swrap_bind_symbol_libc (dup);
-
- return swrap.libc.symbols._libc_dup.f (fd);
-}
-
-int
-libc_dup2 (int oldfd, int newfd)
-{
- swrap_bind_symbol_libc (dup2);
-
- return swrap.libc.symbols._libc_dup2.f (oldfd, newfd);
-}
-#endif
-
-#ifdef HAVE_EVENTFD
-int
-libc_eventfd (int count, int flags)
-{
- swrap_bind_symbol_libc (eventfd);
-
- return swrap.libc.symbols._libc_eventfd.f (count, flags);
-}
-#endif
-
-DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int
-libc_vfcntl (int fd, int cmd, va_list ap)
-{
- long int args[4];
- int rc;
- int i;
-
- swrap_bind_symbol_libc (fcntl);
-
- for (i = 0; i < 4; i++)
- {
- args[i] = va_arg (ap, long int);
- }
-
- rc = swrap.libc.symbols._libc_fcntl.f (fd,
- cmd,
- args[0], args[1], args[2], args[3]);
-
- return rc;
-}
-
-DO_NOT_SANITIZE_ADDRESS_ATTRIBUTE int
-libc_vioctl (int fd, int cmd, va_list ap)
-{
- long int args[4];
- int rc;
- int i;
-
- swrap_bind_symbol_libc (ioctl);
-
- for (i = 0; i < 4; i++)
- {
- args[i] = va_arg (ap, long int);
- }
-
- rc = swrap.libc.symbols._libc_ioctl.f (fd,
- cmd,
- args[0], args[1], args[2], args[3]);
-
- return rc;
-}
-
-int
-libc_getpeername (int sockfd, struct sockaddr *addr, socklen_t * addrlen)
-{
- swrap_bind_symbol_libc (getpeername);
-
- return swrap.libc.symbols._libc_getpeername.f (sockfd, addr, addrlen);
-}
-
-int
-libc_getsockname (int sockfd, struct sockaddr *addr, socklen_t * addrlen)
-{
- swrap_bind_symbol_libc (getsockname);
-
- return swrap.libc.symbols._libc_getsockname.f (sockfd, addr, addrlen);
-}
-
-int
-libc_getsockopt (int sockfd,
- int level, int optname, void *optval, socklen_t * optlen)
-{
- swrap_bind_symbol_libc (getsockopt);
-
- return swrap.libc.symbols._libc_getsockopt.f (sockfd,
- level,
- optname, optval, optlen);
-}
-
-int
-libc_listen (int sockfd, int backlog)
-{
- swrap_bind_symbol_libc (listen);
-
- return swrap.libc.symbols._libc_listen.f (sockfd, backlog);
-}
-
-int
-libc_read (int fd, void *buf, size_t count)
-{
- swrap_bind_symbol_libc (read);
-
- return swrap.libc.symbols._libc_read.f (fd, buf, count);
-}
-
-ssize_t
-libc_readv (int fd, const struct iovec * iov, int iovcnt)
-{
- swrap_bind_symbol_libc (readv);
-
- return swrap.libc.symbols._libc_readv.f (fd, iov, iovcnt);
-}
-
-int
-libc_recv (int sockfd, void *buf, size_t len, int flags)
-{
- swrap_bind_symbol_libc (recv);
-
- return swrap.libc.symbols._libc_recv.f (sockfd, buf, len, flags);
-}
-
-int
-libc_recvfrom (int sockfd,
- void *buf,
- size_t len,
- int flags, struct sockaddr *src_addr, socklen_t * addrlen)
-{
- swrap_bind_symbol_libc (recvfrom);
-
- return swrap.libc.symbols._libc_recvfrom.f (sockfd,
- buf,
- len, flags, src_addr, addrlen);
-}
-
-int
-libc_recvmsg (int sockfd, struct msghdr *msg, int flags)
-{
- swrap_bind_symbol_libc (recvmsg);
-
- return swrap.libc.symbols._libc_recvmsg.f (sockfd, msg, flags);
-}
-
-int
-libc_send (int sockfd, const void *buf, size_t len, int flags)
-{
- swrap_bind_symbol_libc (send);
-
- return swrap.libc.symbols._libc_send.f (sockfd, buf, len, flags);
-}
-
-int
-libc_sendmsg (int sockfd, const struct msghdr *msg, int flags)
-{
- swrap_bind_symbol_libc (sendmsg);
-
- return swrap.libc.symbols._libc_sendmsg.f (sockfd, msg, flags);
-}
-
-int
-libc_sendto (int sockfd,
- const void *buf,
- size_t len,
- int flags, const struct sockaddr *dst_addr, socklen_t addrlen)
-{
- swrap_bind_symbol_libc (sendto);
-
- return swrap.libc.symbols._libc_sendto.f (sockfd,
- buf,
- len, flags, dst_addr, addrlen);
-}
-
-int
-libc_setsockopt (int sockfd,
- int level, int optname, const void *optval, socklen_t optlen)
-{
- swrap_bind_symbol_libc (setsockopt);
-
- return swrap.libc.symbols._libc_setsockopt.f (sockfd,
- level,
- optname, optval, optlen);
-}
-
-int
-libc_socket (int domain, int type, int protocol)
-{
- swrap_bind_symbol_libc (socket);
-
- return swrap.libc.symbols._libc_socket.f (domain, type, protocol);
-}
-
-int
-libc_socketpair (int domain, int type, int protocol, int sv[2])
-{
- swrap_bind_symbol_libc (socketpair);
-
- return swrap.libc.symbols._libc_socketpair.f (domain, type, protocol, sv);
-}
-
-ssize_t
-libc_write (int fd, const void *buf, size_t count)
-{
- swrap_bind_symbol_libc (write);
-
- return swrap.libc.symbols._libc_write.f (fd, buf, count);
-}
-
-ssize_t
-libc_writev (int fd, const struct iovec * iov, int iovcnt)
-{
- swrap_bind_symbol_libc (writev);
-
- return swrap.libc.symbols._libc_writev.f (fd, iov, iovcnt);
-}
-
-int
-libc_shutdown (int fd, int how)
-{
- swrap_bind_symbol_libc (shutdown);
-
- return swrap.libc.symbols._libc_shutdown.f (fd, how);
-}
-
-int
-libc_select (int __nfds, fd_set * __restrict __readfds,
- fd_set * __restrict __writefds,
- fd_set * __restrict __exceptfds,
- struct timeval *__restrict __timeout)
-{
- swrap_bind_symbol_libc (select);
-
- return swrap.libc.symbols._libc_select.f (__nfds, __readfds,
- __writefds,
- __exceptfds, __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)
-{
- swrap_bind_symbol_libc (pselect);
-
- return swrap.libc.symbols._libc_pselect.f (__nfds, __readfds,
- __writefds,
- __exceptfds,
- __timeout, __sigmask);
-}
-#endif
-
-int
-libc_epoll_create (int __size)
-{
- swrap_bind_symbol_libc (epoll_create);
-
- return swrap.libc.symbols._libc_epoll_create.f (__size);
-}
-
-int
-libc_epoll_create1 (int __flags)
-{
- swrap_bind_symbol_libc (epoll_create1);
-
- return swrap.libc.symbols._libc_epoll_create1.f (__flags);
-}
-
-int
-libc_epoll_ctl (int __epfd, int __op, int __fd, struct epoll_event *__event)
-{
- swrap_bind_symbol_libc (epoll_ctl);
-
- return swrap.libc.symbols._libc_epoll_ctl.f (__epfd, __op, __fd, __event);
-}
-
-int
-libc_epoll_wait (int __epfd, struct epoll_event *__events,
- int __maxevents, int __timeout)
-{
- swrap_bind_symbol_libc (epoll_wait);
-
- return swrap.libc.symbols._libc_epoll_wait.f (__epfd, __events,
- __maxevents, __timeout);
-}
-
-int
-libc_epoll_pwait (int __epfd, struct epoll_event *__events,
- int __maxevents, int __timeout, const __sigset_t * __ss)
-{
- swrap_bind_symbol_libc (epoll_pwait);
-
- return swrap.libc.symbols._libc_epoll_pwait.f (__epfd, __events,
- __maxevents, __timeout,
- __ss);
-}
-
-int
-libc_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
-{
- swrap_bind_symbol_libc (poll);
-
- return swrap.libc.symbols._libc_poll.f (__fds, __nfds, __timeout);
-}
-
-#ifdef __USE_GNU
-int
-libc_ppoll (struct pollfd *__fds, nfds_t __nfds,
- const struct timespec *__timeout, const __sigset_t * __ss)
-{
- swrap_bind_symbol_libc (ppoll);
-
- return swrap.libc.symbols._libc_ppoll.f (__fds, __nfds, __timeout, __ss);
-}
-#endif
-
-static void
-swrap_thread_prepare (void)
-{
- SWRAP_LOCK_ALL;
-}
-
-static void
-swrap_thread_parent (void)
-{
- SWRAP_UNLOCK_ALL;
-}
-
-static void
-swrap_thread_child (void)
-{
- SWRAP_UNLOCK_ALL;
-}
-
-/****************************
- * CONSTRUCTOR
- ***************************/
-void
-swrap_constructor (void)
-{
- /*
- * If we hold a lock and the application forks, then the child
- * is not able to unlock the mutex and we are in a deadlock.
- * This should prevent such deadlocks.
- */
- pthread_atfork (&swrap_thread_prepare,
- &swrap_thread_parent, &swrap_thread_child);
-}
-
-/****************************
- * DESTRUCTOR
- ***************************/
-
-/*
- * This function is called when the library is unloaded and makes sure that
- * sockets get closed and the unix file for the socket are unlinked.
- */
-void
-swrap_destructor (void)
-{
- if (swrap.libc.handle != NULL)
- {
- dlclose (swrap.libc.handle);
- }
- if (swrap.libc.socket_handle)
- {
- dlclose (swrap.libc.socket_handle);
- }
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff