X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/05ec18de4a052686f21343460824a1b88ab2129e..294f47fdbcbf5534a266d9abfcd1ccb873aff891:/src/OS/os.h-Linux diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux index 3fead17d7..63cf9babd 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 - 2018 */ +/* 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__) @@ -44,9 +50,6 @@ 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 +71,21 @@ 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 + +/* 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 + /* End */