X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/10c50704c1efb095f3b35de3a535f4ea311cb3e5..cdb37db5c0ff060de7edfc94e830cab6b7f7c084:/src/OS/os.h-Linux?ds=sidebyside diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux index 6400e798e..c705e5cd2 100644 --- a/src/OS/os.h-Linux +++ b/src/OS/os.h-Linux @@ -1,10 +1,14 @@ /* Exim: OS-specific C header file for Linux */ +/* Copyright (c) University of Cambridge 1995 - 2020 */ +/* See the file NOTICE for conditions of use and distribution. */ + /* Some old systems we've received bug-reports for have a which does not pull in . Best to just pull it in now and have done with the issue. */ #include +#include #define CRYPT_H @@ -15,12 +19,14 @@ 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 +35,8 @@ 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 +75,20 @@ then change the 0 to 1 in the next block. */ # define EXIM_HAVE_OPENAT #endif +/* TCP Fast Open support */ + +#include /* for TCP_FASTOPEN */ +#include /* for MSG_FASTOPEN */ +#if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN) +# define MSG_FASTOPEN 0x20000000 +#endif +#define EXIM_HAVE_TCPI_UNACKED +#ifndef TCPI_OPT_SYN_DATA +# define TCPI_OPT_SYN_DATA 32 +#endif + +/* "Abstract" Unix-socket names */ +#define EXIM_HAVE_ABSTRACT_UNIX_SOCKETS + /* End */