X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/10c50704c1efb095f3b35de3a535f4ea311cb3e5..16b33efd9367c4f0a2560b2facd50797fd17a2b6:/src/OS/os.h-Linux?ds=sidebyside

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 6400e798e..57034649c 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -5,6 +5,7 @@ does not pull in <features.h>.  Best to just pull it in now and have done
 with the issue. */
 
 #include <features.h>
+#include <sys/types.h>
 
 
 #define CRYPT_H
@@ -15,12 +16,14 @@ with the issue. */
 #define NO_IP_VAR_H
 #define SIG_IGN_WORKS
 
-/* When using the DKIM, setting HAVE_LINUX_SENDFILE can increase
+/* When using DKIM, setting OS_SENDFILE can increase
 performance on outgoing mail a bit. Note: With older glibc versions
 this setting will conflict with the _FILE_OFFSET_BITS=64 setting
-defined as part of the Linux CFLAGS. */
+defined as part of the Linux CFLAGS.  As of 2017 those are declared
+to be too old to build by default. */
 
-/* #define HAVE_LINUX_SENDFILE */
+#define OS_SENDFILE
+extern ssize_t os_sendfile(int, int, off_t *, size_t);
 
 #define F_FREESP     O_TRUNC
 typedef struct flock flock_t;
@@ -29,8 +32,8 @@ typedef struct flock flock_t;
 #define OS_STRSIGNAL
 
 #if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD_kernel__)
-#define SIOCGIFCONF_GIVES_ADDR
-#define HAVE_SYS_MOUNT_H
+# define SIOCGIFCONF_GIVES_ADDR
+# define HAVE_SYS_MOUNT_H
 #endif
 
 #if defined(__linux__)
@@ -69,5 +72,11 @@ then change the 0 to 1 in the next block. */
 # define EXIM_HAVE_OPENAT
 #endif
 
+#include <netinet/tcp.h>	/* for TCP_FASTOPEN */
+#include <sys/socket.h>		/* for MSG_FASTOPEN */
+#if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN)
+# define MSG_FASTOPEN 0x20000000
+#endif
+
 
 /* End */