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view src/os/unix/ngx_posix_config.h @ 7668:0a04e5e4c40b

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Large block sizes on Linux are now ignored (ticket #1168). NFS on Linux is known to report wsize as a block size (in both f_bsize and f_frsize, both in statfs() and statvfs()). On the other hand, typical file system block sizes on Linux (ext2/ext3/ext4, XFS) are limited to pagesize. (With FAT, block sizes can be at least up to 512k in extreme cases, but this doesn't really matter, see below.) To avoid too aggressive cache clearing on NFS volumes on Linux, block sizes larger than pagesize are now ignored. Note that it is safe to ignore large block sizes. Since 3899:e7cd13b7f759 (1.0.1) cache size is calculated based on fstat() st_blocks, and rounding to file system block size is preserved mostly for Windows. Note well that on other OSes valid block sizes seen are at least up to 65536. In particular, UFS on FreeBSD is known to work well with block and fragment sizes set to 65536.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 22 Jun 2020 18:02:58 +0300
parents fc0d06224eda
children 93bbb9fbf30d
line wrap: on
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_POSIX_CONFIG_H_INCLUDED_
#define _NGX_POSIX_CONFIG_H_INCLUDED_


#if (NGX_HPUX)
#define _XOPEN_SOURCE
#define _XOPEN_SOURCE_EXTENDED  1
#define _HPUX_ALT_XOPEN_SOCKET_API
#endif


#if (NGX_TRU64)
#define _REENTRANT
#endif


#if (NGX_GNU_HURD)
#ifndef _GNU_SOURCE
#define _GNU_SOURCE             /* accept4() */
#endif
#define _FILE_OFFSET_BITS       64
#endif


#ifdef __CYGWIN__
#define timezonevar             /* timezone is variable */
#define NGX_BROKEN_SCM_RIGHTS   1
#endif


#include <sys/types.h>
#include <sys/time.h>
#if (NGX_HAVE_UNISTD_H)
#include <unistd.h>
#endif
#if (NGX_HAVE_INTTYPES_H)
#include <inttypes.h>
#endif
#include <stdarg.h>
#include <stddef.h>             /* offsetof() */
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <pwd.h>
#include <grp.h>
#include <dirent.h>
#include <glob.h>
#include <time.h>
#if (NGX_HAVE_SYS_PARAM_H)
#include <sys/param.h>          /* statfs() */
#endif
#if (NGX_HAVE_SYS_MOUNT_H)
#include <sys/mount.h>          /* statfs() */
#endif
#if (NGX_HAVE_SYS_STATVFS_H)
#include <sys/statvfs.h>        /* statvfs() */
#endif

#if (NGX_HAVE_SYS_FILIO_H)
#include <sys/filio.h>          /* FIONBIO */
#endif
#include <sys/ioctl.h>          /* FIONBIO */

#include <sys/uio.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <sys/wait.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sched.h>

#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>        /* TCP_NODELAY */
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/un.h>

#if (NGX_HAVE_LIMITS_H)
#include <limits.h>             /* IOV_MAX */
#endif

#ifdef __CYGWIN__
#include <malloc.h>             /* memalign() */
#endif

#if (NGX_HAVE_CRYPT_H)
#include <crypt.h>
#endif


#ifndef IOV_MAX
#define IOV_MAX   16
#endif


#include <ngx_auto_config.h>


#if (NGX_HAVE_DLOPEN)
#include <dlfcn.h>
#endif


#if (NGX_HAVE_POSIX_SEM)
#include <semaphore.h>
#endif


#if (NGX_HAVE_POLL)
#include <poll.h>
#endif


#if (NGX_HAVE_KQUEUE)
#include <sys/event.h>
#endif


#if (NGX_HAVE_DEVPOLL) && !(NGX_TEST_BUILD_DEVPOLL)
#include <sys/ioctl.h>
#include <sys/devpoll.h>
#endif


#if (NGX_HAVE_FILE_AIO)
#include <aio.h>
typedef struct aiocb  ngx_aiocb_t;
#endif


#define NGX_LISTEN_BACKLOG  511

#define ngx_debug_init()


extern char **environ;


#endif /* _NGX_POSIX_CONFIG_H_INCLUDED_ */