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emacs/lib/fcntl.in.h
Po Lu ecf08f0621 Merge from savannah/emacs-29 
dc4e6b1329 ; Update copyright years in more files
64b3777631 ; Run set-copyright from admin.el
8e1c56ae46 ; Add 2024 to copyright years

# Conflicts:
#	doc/misc/modus-themes.org
#	doc/misc/texinfo.tex
#	etc/NEWS
#	etc/refcards/ru-refcard.tex
#	etc/themes/modus-operandi-theme.el
#	etc/themes/modus-themes.el
#	etc/themes/modus-vivendi-theme.el
#	lib/alloca.in.h
#	lib/binary-io.h
#	lib/c-ctype.h
#	lib/c-strcasecmp.c
#	lib/c-strncasecmp.c
#	lib/careadlinkat.c
#	lib/cloexec.c
#	lib/close-stream.c
#	lib/diffseq.h
#	lib/dup2.c
#	lib/filemode.h
#	lib/fpending.c
#	lib/fpending.h
#	lib/fsusage.c
#	lib/getgroups.c
#	lib/getloadavg.c
#	lib/gettext.h
#	lib/gettime.c
#	lib/gettimeofday.c
#	lib/group-member.c
#	lib/malloc.c
#	lib/md5-stream.c
#	lib/md5.c
#	lib/md5.h
#	lib/memmem.c
#	lib/memrchr.c
#	lib/nanosleep.c
#	lib/save-cwd.h
#	lib/sha1.c
#	lib/sig2str.c
#	lib/stdlib.in.h
#	lib/strtoimax.c
#	lib/strtol.c
#	lib/strtoll.c
#	lib/time_r.c
#	lib/xalloc-oversized.h
#	lisp/auth-source-pass.el
#	lisp/emacs-lisp/lisp-mnt.el
#	lisp/emacs-lisp/timer.el
#	lisp/info-look.el
#	lisp/jit-lock.el
#	lisp/loadhist.el
#	lisp/mail/rmail.el
#	lisp/net/ntlm.el
#	lisp/net/webjump.el
#	lisp/progmodes/asm-mode.el
#	lisp/progmodes/project.el
#	lisp/progmodes/sh-script.el
#	lisp/textmodes/flyspell.el
#	lisp/textmodes/reftex-toc.el
#	lisp/textmodes/reftex.el
#	lisp/textmodes/tex-mode.el
#	lisp/url/url-gw.el
#	m4/alloca.m4
#	m4/clock_time.m4
#	m4/d-type.m4
#	m4/dirent_h.m4
#	m4/dup2.m4
#	m4/euidaccess.m4
#	m4/fchmodat.m4
#	m4/filemode.m4
#	m4/fsusage.m4
#	m4/getgroups.m4
#	m4/getloadavg.m4
#	m4/getrandom.m4
#	m4/gettime.m4
#	m4/gettimeofday.m4
#	m4/gnulib-common.m4
#	m4/group-member.m4
#	m4/inttypes.m4
#	m4/malloc.m4
#	m4/manywarnings.m4
#	m4/mempcpy.m4
#	m4/memrchr.m4
#	m4/mkostemp.m4
#	m4/mktime.m4
#	m4/nproc.m4
#	m4/nstrftime.m4
#	m4/pathmax.m4
#	m4/pipe2.m4
#	m4/pselect.m4
#	m4/pthread_sigmask.m4
#	m4/readlink.m4
#	m4/realloc.m4
#	m4/sig2str.m4
#	m4/ssize_t.m4
#	m4/stat-time.m4
#	m4/stddef_h.m4
#	m4/stdint.m4
#	m4/stdio_h.m4
#	m4/stdlib_h.m4
#	m4/stpcpy.m4
#	m4/strnlen.m4
#	m4/strtoimax.m4
#	m4/strtoll.m4
#	m4/time_h.m4
#	m4/timegm.m4
#	m4/timer_time.m4
#	m4/timespec.m4
#	m4/unistd_h.m4
#	m4/warnings.m4
#	nt/configure.bat
#	nt/preprep.c
#	test/lisp/register-tests.el
2024-01-02 10:28:14 +08:00

451 lines
13 KiB
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/* Like <fcntl.h>, but with non-working flags defined to 0.
Copyright (C) 2006-2024 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Paul Eggert */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
#if defined __need_system_fcntl_h
/* Special invocation convention. */
/* Needed before <sys/stat.h>.
May also define off_t to a 64-bit type on native Windows. */
#include <sys/types.h>
/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
<fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
extern "C" { ... } block, which leads to errors in C++ mode with the
overridden <sys/stat.h> from gnulib. These errors are known to be gone
with g++ version >= 4.3. */
#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
# include <sys/stat.h>
#endif
#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
/* Native Windows platforms declare open(), creat() in <io.h>. */
#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
&& (defined _WIN32 && ! defined __CYGWIN__)
# include <io.h>
#endif
#else
/* Normal invocation convention. */
#ifndef _@GUARD_PREFIX@_FCNTL_H
/* Needed before <sys/stat.h>.
May also define off_t to a 64-bit type on native Windows. */
#include <sys/types.h>
/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
<fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
extern "C" { ... } block, which leads to errors in C++ mode with the
overridden <sys/stat.h> from gnulib. These errors are known to be gone
with g++ version >= 4.3. */
#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
# include <sys/stat.h>
#endif
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
/* Native Windows platforms declare open(), creat() in <io.h>. */
#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
&& (defined _WIN32 && ! defined __CYGWIN__)
# include <io.h>
#endif
#ifndef _@GUARD_PREFIX@_FCNTL_H
#define _@GUARD_PREFIX@_FCNTL_H
/* This file uses GNULIB_POSIXCHECK, HAVE_RAW_DECL_*. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
# include <unistd.h>
#endif
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_ARG_NONNULL is copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
/* Declare overridden functions. */
#if @GNULIB_CREAT@
# if @REPLACE_CREAT@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat rpl_creat
# endif
_GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
_GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
# elif defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat _creat
# endif
_GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode));
# else
_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
# endif
_GL_CXXALIASWARN (creat);
#elif defined GNULIB_POSIXCHECK
# undef creat
/* Assume creat is always declared. */
_GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
"use gnulib module creat for portability");
#elif @GNULIB_MDA_CREAT@
/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::creat always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat _creat
# endif
/* Need to cast, because in mingw the last argument is 'int mode'. */
_GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode));
# else
_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
# endif
_GL_CXXALIASWARN (creat);
#endif
#if @GNULIB_FCNTL@
# if @REPLACE_FCNTL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef fcntl
# define fcntl rpl_fcntl
# endif
_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
# if !GNULIB_defined_rpl_fcntl
# define GNULIB_defined_rpl_fcntl 1
# endif
# else
# if !@HAVE_FCNTL@
_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
# if !GNULIB_defined_fcntl
# define GNULIB_defined_fcntl 1
# endif
# endif
_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
# endif
_GL_CXXALIASWARN (fcntl);
#elif defined GNULIB_POSIXCHECK
# undef fcntl
# if HAVE_RAW_DECL_FCNTL
_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
"use gnulib module fcntl for portability");
# endif
#endif
#if @GNULIB_OPEN@
# if @REPLACE_OPEN@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open rpl_open
# endif
_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
_GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
# elif defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open _open
# endif
_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
# else
_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
# endif
/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
default argument. _GL_CXXALIASWARN does not work in this case. */
# if !defined __hpux
_GL_CXXALIASWARN (open);
# endif
#elif defined GNULIB_POSIXCHECK
# undef open
/* Assume open is always declared. */
_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
"use gnulib module open for portability");
#elif @GNULIB_MDA_OPEN@
/* On native Windows, map 'open' to '_open', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::open always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open _open
# endif
_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
# else
_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
# endif
# if !defined __hpux
_GL_CXXALIASWARN (open);
# endif
#endif
#if @GNULIB_OPENAT@
# if @REPLACE_OPENAT@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef openat
# define openat rpl_openat
# endif
_GL_FUNCDECL_RPL (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...)
_GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...));
# else
# if !@HAVE_OPENAT@
_GL_FUNCDECL_SYS (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...)
_GL_ARG_NONNULL ((2)));
# endif
_GL_CXXALIAS_SYS (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...));
# endif
_GL_CXXALIASWARN (openat);
#elif defined GNULIB_POSIXCHECK
# undef openat
# if HAVE_RAW_DECL_OPENAT
_GL_WARN_ON_USE (openat, "openat is not portable - "
"use gnulib module openat for portability");
# endif
#endif
/* Fix up the FD_* macros, only known to be missing on mingw. */
#ifndef FD_CLOEXEC
# define FD_CLOEXEC 1
#endif
/* Fix up the supported F_* macros. Intentionally leave other F_*
macros undefined. Only known to be missing on mingw. */
#ifndef F_DUPFD_CLOEXEC
# define F_DUPFD_CLOEXEC 0x40000000
/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
# define GNULIB_defined_F_DUPFD_CLOEXEC 1
#else
# define GNULIB_defined_F_DUPFD_CLOEXEC 0
#endif
#ifndef F_DUPFD
# define F_DUPFD 1
#endif
#ifndef F_GETFD
# define F_GETFD 2
#endif
/* Fix up the O_* macros. */
/* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
to values outside 'int' range, so omit these misdefinitions.
But avoid namespace pollution on non-AIX systems. */
#ifdef _AIX
# include <limits.h>
# if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
# undef O_CLOEXEC
# endif
# if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
# undef O_NOFOLLOW
# endif
# if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
# undef O_TTY_INIT
# endif
#endif
#if !defined O_DIRECT && defined O_DIRECTIO
/* Tru64 spells it 'O_DIRECTIO'. */
# define O_DIRECT O_DIRECTIO
#endif
#if !defined O_CLOEXEC && defined O_NOINHERIT
/* Mingw spells it 'O_NOINHERIT'. */
# define O_CLOEXEC O_NOINHERIT
#endif
#ifndef O_CLOEXEC
# define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */
# define GNULIB_defined_O_CLOEXEC 1
#else
# define GNULIB_defined_O_CLOEXEC 0
#endif
#ifndef O_DIRECT
# define O_DIRECT 0
#endif
#ifndef O_DIRECTORY
# define O_DIRECTORY 0
#endif
#ifndef O_DSYNC
# define O_DSYNC 0
#endif
#ifndef O_EXEC
# define O_EXEC O_RDONLY /* This is often close enough in older systems. */
#endif
#ifndef O_IGNORE_CTTY
# define O_IGNORE_CTTY 0
#endif
#ifndef O_NDELAY
# define O_NDELAY 0
#endif
#ifndef O_NOATIME
# define O_NOATIME 0
#endif
#ifndef O_NONBLOCK
# define O_NONBLOCK O_NDELAY
#endif
/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
or to 0 as fallback. */
#if @GNULIB_NONBLOCKING@
# if O_NONBLOCK
# define GNULIB_defined_O_NONBLOCK 0
# else
# define GNULIB_defined_O_NONBLOCK 1
# undef O_NONBLOCK
# define O_NONBLOCK 0x40000000
# endif
#endif
#ifndef O_NOCTTY
# define O_NOCTTY 0
#endif
#ifndef O_NOFOLLOW
# define O_NOFOLLOW 0
#endif
#ifndef O_NOLINK
# define O_NOLINK 0
#endif
#ifndef O_NOLINKS
# define O_NOLINKS 0
#endif
#ifndef O_NOTRANS
# define O_NOTRANS 0
#endif
#ifndef O_RSYNC
# define O_RSYNC 0
#endif
#ifndef O_SEARCH
# define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
#endif
#ifndef O_SYNC
# define O_SYNC 0
#endif
#ifndef O_TTY_INIT
# define O_TTY_INIT 0
#endif
#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
# undef O_ACCMODE
# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
#endif
/* For systems that distinguish between text and binary I/O.
O_BINARY is usually declared in fcntl.h */
#if !defined O_BINARY && defined _O_BINARY
/* For MSC-compatible compilers. */
# define O_BINARY _O_BINARY
# define O_TEXT _O_TEXT
#endif
#if defined __BEOS__ || defined __HAIKU__
/* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
# undef O_BINARY
# undef O_TEXT
#endif
#ifndef O_BINARY
# define O_BINARY 0
# define O_TEXT 0
#endif
/* Fix up the AT_* macros. */
/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
value exceeds INT_MAX, so its use as an int doesn't conform to the
C standard, and GCC and Sun C complain in some cases. If the bug
is present, undef AT_FDCWD here, so it can be redefined below. */
#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
# undef AT_FDCWD
#endif
/* Use the same bit pattern as Solaris 9, but with the proper
signedness. The bit pattern is important, in case this actually is
Solaris with the above workaround. */
#ifndef AT_FDCWD
# define AT_FDCWD (-3041965)
#endif
/* Use the same values as Solaris 9. This shouldn't matter, but
there's no real reason to differ. */
#ifndef AT_SYMLINK_NOFOLLOW
# define AT_SYMLINK_NOFOLLOW 4096
#endif
#ifndef AT_REMOVEDIR
# define AT_REMOVEDIR 1
#endif
/* Solaris 9 lacks these two, so just pick unique values. */
#ifndef AT_SYMLINK_FOLLOW
# define AT_SYMLINK_FOLLOW 2
#endif
#ifndef AT_EACCESS
# define AT_EACCESS 4
#endif
/* Ignore this flag if not supported. */
#ifndef AT_NO_AUTOMOUNT
# define AT_NO_AUTOMOUNT 0
#endif
#endif /* _@GUARD_PREFIX@_FCNTL_H */
#endif /* _@GUARD_PREFIX@_FCNTL_H */
#endif
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