From f21612d73f8f75c5b4dd2a496865dfdd30165c54 Mon Sep 17 00:00:00 2001
From: Urban Wallasch <urban.wallasch@freenet.de>
Date: Fri, 25 Oct 2019 17:32:08 +0200
Subject: [PATCH] * net: constify buffer argument of send_to();  #include
 stdlib.h;  fixed comment

---
 net/net.c | 4 ++--
 net/net.h | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/net.c b/net/net.c
index 0b048bf..296155e 100644
--- a/net/net.c
+++ b/net/net.c
@@ -14,6 +14,7 @@
 
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <poll.h>
@@ -37,7 +38,6 @@
 #endif
 
 #ifdef NET_ERR
-#include <stdlib.h>
 
 /* Log helper function: create "host:port" string from socket address: */
 static char *addr2str(const struct sockaddr *addr, socklen_t addrlen,
@@ -354,7 +354,7 @@ ssize_t recvfrom_tm(int fd, void *buf, size_t len, int flags,
 }
 
 /* Write to socket or file descriptor: */
-ssize_t sendto_tm(int fd, void *buf, size_t len, int flags,
+ssize_t sendto_tm(int fd, const void *buf, size_t len, int flags,
                   const struct sockaddr *addr, socklen_t alen, int timeout) {
     ssize_t r;
     struct pollfd pfd;
diff --git a/net/net.h b/net/net.h
index 0a793fe..a57f50b 100644
--- a/net/net.h
+++ b/net/net.h
@@ -27,6 +27,8 @@
  * send_tm
  * write_tm        - functions and macros to write with timeout
  *
+ * sendfile_tm     - copy data from one file descriptor to another
+ *
  */
 
 #ifndef NET_H_
@@ -217,7 +219,7 @@ extern ssize_t recvfrom_tm(int fd, void *buf, size_t len, int flags,
  * flags, addr and alen are ignored, and performance may be slightly
  * inferior compared to a plain write() call.
  */
-extern ssize_t sendto_tm(int fd, void *buf, size_t len, int flags,
+extern ssize_t sendto_tm(int fd, const void *buf, size_t len, int flags,
                const struct sockaddr *addr, socklen_t alen, int timeout);
 /*
  * Shorthand macros to closely match send() and write() prototypes:
-- 
2.30.2