vcl: better handlig of ldp apis that rely on gnu source

[vpp.git] / src / vcl / ldp_glibc_socket.h

diff --git a/src/vcl/ldp_glibc_socket.h b/src/vcl/ldp_glibc_socket.h
index a9e5dbe..dcd3720 100644 (file)
--- a/src/vcl/ldp_glibc_socket.h
+++ b/src/vcl/ldp_glibc_socket.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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:
@@ -163,6 +163,14 @@ extern ssize_t sendfile (int __out_fd, int __in_fd, off_t * __offset,
    __THROW.  */
 extern ssize_t recv (int __fd, void *__buf, size_t __n, int __flags);
 
+/* Read N bytes into BUF from socket FD with buffer overflow checking.
+   Returns the number read or -1 for errors.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern ssize_t __recv_chk (int fd, void *buf, size_t n, size_t buflen,
+                          int flags);
+
 /* Send N bytes of BUF on socket FD to peer at address ADDR (which is
    ADDR_LEN bytes long).  Returns the number sent, or -1 for errors.
 
@@ -192,15 +200,14 @@ recvfrom (int __fd, void *__restrict __buf,
 extern ssize_t
 sendmsg (int __fd, const struct msghdr *__message, int __flags);
 
-#ifdef __USE_GNU
+#ifdef _GNU_SOURCE
 /* Send a VLEN messages as described by VMESSAGES to socket FD.
    Returns the number of datagrams successfully written or -1 for errors.
 
    This function is a cancellation point and therefore not marked with
    __THROW.  */
-extern int
-sendmmsg (int __fd, struct mmsghdr *__vmessages,
-         unsigned int __vlen, int __flags);
+extern int sendmmsg (int __fd, struct mmsghdr *__vmessages,
+                    unsigned int __vlen, int __flags);
 #endif
 
 /* Receive a message as described by MESSAGE from socket FD.
@@ -210,7 +217,7 @@ sendmmsg (int __fd, struct mmsghdr *__vmessages,
    __THROW.  */
 extern ssize_t recvmsg (int __fd, struct msghdr *__message, int __flags);
 
-#ifdef __USE_GNU
+#ifdef _GNU_SOURCE
 /* Receive up to VLEN messages as described by VMESSAGES from socket FD.
    Returns the number of messages received or -1 for errors.
 
@@ -329,7 +336,7 @@ epoll_pwait (int __epfd, struct epoll_event *__events,
    __THROW.  */
 extern int poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
 
-#ifdef __USE_GNU
+#ifdef _GNU_SOURCE
 /* Like poll, but before waiting the threads signal mask is replaced
    with that specified in the fourth parameter.  For better usability,
    the timeout value is specified using a TIMESPEC object.