X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/05ec18de4a052686f21343460824a1b88ab2129e..d315eda12f25ca2f72ca56b777a427c9ee7188e1:/src/OS/os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 3fead17d7..3e9303cab 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -18,9 +18,10 @@ with the issue. */
 /* When using the DKIM, setting HAVE_LINUX_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 HAVE_LINUX_SENDFILE
 
 #define F_FREESP     O_TRUNC
 typedef struct flock flock_t;
@@ -44,9 +45,6 @@ storage" as quickly as Exim thinks they are. */
 
 #define NEED_SYNC_DIRECTORY
 
-/* Other OS have "const" in here */
-#define ICONV_ARG2_TYPE char **
-
 #define os_find_running_interfaces os_find_running_interfaces_linux
 
 /* Need a prototype for the Linux-specific function. The structure hasn't
@@ -68,5 +66,15 @@ then change the 0 to 1 in the next block. */
 # define LLONG_MAX LONG_LONG_MAX
 #endif
 
+#if _POSIX_C_SOURCE >= 200809L || _ATFILE_SOUCE
+# 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 */