LD_PRELOAD: Refactor nomenclature (vcom -> ldp).

Change-Id: Id3891fe2873b631f8f69c1ca2905968130678561
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

1 files changed, 235 insertions, 0 deletions

diff --git a/src/vcl/ldp_socket_wrapper.h b/src/vcl/ldp_socket_wrapper.h
new file mode 100644
index 00000000000..59e4eaef394
--- /dev/null
+++ b/src/vcl/ldp_socket_wrapper.h
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2017 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:
+ */