commit 227867f5d3fb1b1dacbaf2f426812417b72ef03a
author Dave Wallace <dwallacelf@gmail.com> Mon Nov 13 21:21:53 2017 -0500
committer Keith Burns <alagalah@gmail.com> Tue Nov 14 03:44:25 2017 +0000
tree 6d7b603b196d170717d5f81e23f122ec38989fb9
parent 49806fe252030a4cd993f598ff65a89590d57388

VCL-LDPRELOAD: add sendfile/sendfile64 implementation.

Change-Id: If0c399269238912456d670432d7e953c9d91b9fb
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

src/vcl/vcom_socket_wrapper.c

diff --git a/src/vcl/vcom_socket_wrapper.c b/src/vcl/vcom_socket_wrapper.c
index d73f4b2..de633d1 100644
--- a/src/vcl/vcom_socket_wrapper.c
+++ b/src/vcl/vcom_socket_wrapper.c
@@ -212,6 +212,8 @@
 			       int flags);
 typedef int (*__libc_send) (int sockfd, const void *buf, size_t len,
 			    int flags);
+typedef ssize_t (*__libc_sendfile) (int out_fd, int in_fd, off_t * offset,
+				    size_t len);
 typedef int (*__libc_sendmsg) (int sockfd, const struct msghdr * msg,
 			       int flags);
 typedef int (*__libc_sendto) (int sockfd, const void *buf, size_t len,
@@ -314,6 +316,7 @@
   SWRAP_SYMBOL_ENTRY (recvfrom);
   SWRAP_SYMBOL_ENTRY (recvmsg);
   SWRAP_SYMBOL_ENTRY (send);
+  SWRAP_SYMBOL_ENTRY (sendfile);
   SWRAP_SYMBOL_ENTRY (sendmsg);
   SWRAP_SYMBOL_ENTRY (sendto);
   SWRAP_SYMBOL_ENTRY (setsockopt);
@@ -615,6 +618,7 @@
   return swrap.libc.symbols._libc_listen.f (sockfd, backlog);
 }
 
+/* TBD: libc_read() should return ssize_t not an int */
 int
 libc_read (int fd, void *buf, size_t count)
 {
@@ -668,6 +672,14 @@
   return swrap.libc.symbols._libc_send.f (sockfd, buf, len, flags);
 }
 
+ssize_t
+libc_sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
+{
+  swrap_bind_symbol_libc (sendfile);
+
+  return swrap.libc.symbols._libc_sendfile.f (out_fd, in_fd, offset, len);
+}
+
 int
 libc_sendmsg (int sockfd, const struct msghdr *msg, int flags)
 {