| 1 | /* Like <fcntl.h>, but with non-working flags defined to 0.
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| 2 |
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| 3 | Copyright (C) 2006-2022 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as
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| 7 | published by the Free Software Foundation; either version 2.1 of the
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| 8 | License, or (at your option) any later version.
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| 9 |
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| 10 | This file is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | /* written by Paul Eggert */
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| 19 |
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| 20 | #if __GNUC__ >= 3
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| 21 | @PRAGMA_SYSTEM_HEADER@
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| 22 | #endif
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| 23 | @PRAGMA_COLUMNS@
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| 24 |
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| 25 | #if defined __need_system_fcntl_h
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| 26 | /* Special invocation convention. */
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| 27 |
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| 28 | /* Needed before <sys/stat.h>.
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| 29 | May also define off_t to a 64-bit type on native Windows. */
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| 30 | #include <sys/types.h>
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| 31 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of
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| 32 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
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| 33 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
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| 34 | extern "C" { ... } block, which leads to errors in C++ mode with the
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| 35 | overridden <sys/stat.h> from gnulib. These errors are known to be gone
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| 36 | with g++ version >= 4.3. */
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| 37 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
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| 38 | # include <sys/stat.h>
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| 39 | #endif
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| 40 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
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| 41 |
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| 42 | /* Native Windows platforms declare open(), creat() in <io.h>. */
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| 43 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
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| 44 | && (defined _WIN32 && ! defined __CYGWIN__)
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| 45 | # include <io.h>
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| 46 | #endif
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| 47 |
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| 48 | #else
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| 49 | /* Normal invocation convention. */
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| 50 |
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| 51 | #ifndef _@GUARD_PREFIX@_FCNTL_H
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| 52 |
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| 53 | /* Needed before <sys/stat.h>.
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| 54 | May also define off_t to a 64-bit type on native Windows. */
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| 55 | #include <sys/types.h>
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| 56 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of
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| 57 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
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| 58 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
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| 59 | extern "C" { ... } block, which leads to errors in C++ mode with the
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| 60 | overridden <sys/stat.h> from gnulib. These errors are known to be gone
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| 61 | with g++ version >= 4.3. */
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| 62 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
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| 63 | # include <sys/stat.h>
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| 64 | #endif
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| 65 | /* The include_next requires a split double-inclusion guard. */
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| 66 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
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| 67 |
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| 68 | /* Native Windows platforms declare open(), creat() in <io.h>. */
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| 69 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
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| 70 | && (defined _WIN32 && ! defined __CYGWIN__)
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| 71 | # include <io.h>
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| 72 | #endif
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| 73 |
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| 74 | #ifndef _@GUARD_PREFIX@_FCNTL_H
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| 75 | #define _@GUARD_PREFIX@_FCNTL_H
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| 76 |
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| 77 | #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
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| 78 | # include <unistd.h>
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| 79 | #endif
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| 80 |
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| 81 |
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| 82 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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| 83 |
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| 84 | /* The definition of _GL_ARG_NONNULL is copied here. */
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| 85 |
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| 86 | /* The definition of _GL_WARN_ON_USE is copied here. */
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| 87 |
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| 88 |
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| 89 | /* Declare overridden functions. */
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| 90 |
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| 91 | #if @GNULIB_CREAT@
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| 92 | # if @REPLACE_CREAT@
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| 93 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 94 | # undef creat
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| 95 | # define creat rpl_creat
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| 96 | # endif
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| 97 | _GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
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| 98 | _GL_ARG_NONNULL ((1)));
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| 99 | _GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
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| 100 | # elif defined _WIN32 && !defined __CYGWIN__
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| 101 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 102 | # undef creat
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| 103 | # define creat _creat
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| 104 | # endif
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| 105 | _GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode));
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| 106 | # else
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| 107 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
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| 108 | # endif
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| 109 | _GL_CXXALIASWARN (creat);
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| 110 | #elif defined GNULIB_POSIXCHECK
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| 111 | # undef creat
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| 112 | /* Assume creat is always declared. */
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| 113 | _GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
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| 114 | "use gnulib module creat for portability");
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| 115 | #elif @GNULIB_MDA_CREAT@
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| 116 | /* On native Windows, map 'creat' to '_creat', so that -loldnames is not
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| 117 | required. In C++ with GNULIB_NAMESPACE, avoid differences between
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| 118 | platforms by defining GNULIB_NAMESPACE::creat always. */
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| 119 | # if defined _WIN32 && !defined __CYGWIN__
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| 120 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 121 | # undef creat
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| 122 | # define creat _creat
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| 123 | # endif
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| 124 | /* Need to cast, because in mingw the last argument is 'int mode'. */
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| 125 | _GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode));
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| 126 | # else
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| 127 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
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| 128 | # endif
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| 129 | _GL_CXXALIASWARN (creat);
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| 130 | #endif
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| 131 |
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| 132 | #if @GNULIB_FCNTL@
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| 133 | # if @REPLACE_FCNTL@
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| 134 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 135 | # undef fcntl
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| 136 | # define fcntl rpl_fcntl
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| 137 | # endif
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| 138 | _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
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| 139 | _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
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| 140 | # if !GNULIB_defined_rpl_fcntl
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| 141 | # define GNULIB_defined_rpl_fcntl 1
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| 142 | # endif
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| 143 | # else
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| 144 | # if !@HAVE_FCNTL@
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| 145 | _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
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| 146 | # if !GNULIB_defined_fcntl
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| 147 | # define GNULIB_defined_fcntl 1
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| 148 | # endif
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| 149 | # endif
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| 150 | _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
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| 151 | # endif
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| 152 | _GL_CXXALIASWARN (fcntl);
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| 153 | #elif defined GNULIB_POSIXCHECK
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| 154 | # undef fcntl
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| 155 | # if HAVE_RAW_DECL_FCNTL
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| 156 | _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
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| 157 | "use gnulib module fcntl for portability");
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| 158 | # endif
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| 159 | #endif
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| 160 |
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| 161 | #if @GNULIB_OPEN@
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| 162 | # if @REPLACE_OPEN@
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| 163 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 164 | # undef open
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| 165 | # define open rpl_open
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| 166 | # endif
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| 167 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
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| 168 | _GL_ARG_NONNULL ((1)));
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| 169 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
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| 170 | # elif defined _WIN32 && !defined __CYGWIN__
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| 171 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 172 | # undef open
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| 173 | # define open _open
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| 174 | # endif
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| 175 | _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
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| 176 | # else
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| 177 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
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| 178 | # endif
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| 179 | /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
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| 180 | default argument. _GL_CXXALIASWARN does not work in this case. */
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| 181 | # if !defined __hpux
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| 182 | _GL_CXXALIASWARN (open);
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| 183 | # endif
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| 184 | #elif defined GNULIB_POSIXCHECK
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| 185 | # undef open
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| 186 | /* Assume open is always declared. */
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| 187 | _GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
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| 188 | "use gnulib module open for portability");
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| 189 | #elif @GNULIB_MDA_OPEN@
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| 190 | /* On native Windows, map 'open' to '_open', so that -loldnames is not
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| 191 | required. In C++ with GNULIB_NAMESPACE, avoid differences between
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| 192 | platforms by defining GNULIB_NAMESPACE::open always. */
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| 193 | # if defined _WIN32 && !defined __CYGWIN__
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| 194 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 195 | # undef open
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| 196 | # define open _open
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| 197 | # endif
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| 198 | _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
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| 199 | # else
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| 200 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
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| 201 | # endif
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| 202 | # if !defined __hpux
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| 203 | _GL_CXXALIASWARN (open);
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| 204 | # endif
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| 205 | #endif
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| 206 |
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| 207 | #if @GNULIB_OPENAT@
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| 208 | # if @REPLACE_OPENAT@
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| 209 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 210 | # undef openat
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| 211 | # define openat rpl_openat
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| 212 | # endif
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| 213 | _GL_FUNCDECL_RPL (openat, int,
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| 214 | (int fd, char const *file, int flags, /* mode_t mode */ ...)
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| 215 | _GL_ARG_NONNULL ((2)));
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| 216 | _GL_CXXALIAS_RPL (openat, int,
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| 217 | (int fd, char const *file, int flags, /* mode_t mode */ ...));
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| 218 | # else
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| 219 | # if !@HAVE_OPENAT@
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| 220 | _GL_FUNCDECL_SYS (openat, int,
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| 221 | (int fd, char const *file, int flags, /* mode_t mode */ ...)
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| 222 | _GL_ARG_NONNULL ((2)));
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| 223 | # endif
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| 224 | _GL_CXXALIAS_SYS (openat, int,
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| 225 | (int fd, char const *file, int flags, /* mode_t mode */ ...));
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| 226 | # endif
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| 227 | _GL_CXXALIASWARN (openat);
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| 228 | #elif defined GNULIB_POSIXCHECK
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| 229 | # undef openat
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| 230 | # if HAVE_RAW_DECL_OPENAT
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| 231 | _GL_WARN_ON_USE (openat, "openat is not portable - "
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| 232 | "use gnulib module openat for portability");
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| 233 | # endif
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| 234 | #endif
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| 235 |
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| 236 |
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| 237 | /* Fix up the FD_* macros, only known to be missing on mingw. */
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| 238 |
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| 239 | #ifndef FD_CLOEXEC
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| 240 | # define FD_CLOEXEC 1
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| 241 | #endif
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| 242 |
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| 243 | /* Fix up the supported F_* macros. Intentionally leave other F_*
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| 244 | macros undefined. Only known to be missing on mingw. */
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| 245 |
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| 246 | #ifndef F_DUPFD_CLOEXEC
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| 247 | # define F_DUPFD_CLOEXEC 0x40000000
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| 248 | /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
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| 249 | # define GNULIB_defined_F_DUPFD_CLOEXEC 1
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| 250 | #else
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| 251 | # define GNULIB_defined_F_DUPFD_CLOEXEC 0
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| 252 | #endif
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| 253 |
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| 254 | #ifndef F_DUPFD
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| 255 | # define F_DUPFD 1
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| 256 | #endif
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| 257 |
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| 258 | #ifndef F_GETFD
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| 259 | # define F_GETFD 2
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| 260 | #endif
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| 261 |
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| 262 | /* Fix up the O_* macros. */
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| 263 |
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| 264 | /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
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| 265 | to values outside 'int' range, so omit these misdefinitions.
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| 266 | But avoid namespace pollution on non-AIX systems. */
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| 267 | #ifdef _AIX
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| 268 | # include <limits.h>
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| 269 | # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
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| 270 | # undef O_CLOEXEC
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| 271 | # endif
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| 272 | # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
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| 273 | # undef O_NOFOLLOW
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| 274 | # endif
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| 275 | # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
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| 276 | # undef O_TTY_INIT
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| 277 | # endif
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| 278 | #endif
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| 279 |
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| 280 | #if !defined O_DIRECT && defined O_DIRECTIO
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| 281 | /* Tru64 spells it 'O_DIRECTIO'. */
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| 282 | # define O_DIRECT O_DIRECTIO
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| 283 | #endif
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| 284 |
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| 285 | #if !defined O_CLOEXEC && defined O_NOINHERIT
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| 286 | /* Mingw spells it 'O_NOINHERIT'. */
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| 287 | # define O_CLOEXEC O_NOINHERIT
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| 288 | #endif
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| 289 |
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| 290 | #ifndef O_CLOEXEC
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| 291 | # define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */
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| 292 | # define GNULIB_defined_O_CLOEXEC 1
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| 293 | #else
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| 294 | # define GNULIB_defined_O_CLOEXEC 0
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| 295 | #endif
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| 296 |
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| 297 | #ifndef O_DIRECT
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| 298 | # define O_DIRECT 0
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| 299 | #endif
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| 300 |
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| 301 | #ifndef O_DIRECTORY
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| 302 | # define O_DIRECTORY 0
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| 303 | #endif
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| 304 |
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| 305 | #ifndef O_DSYNC
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| 306 | # define O_DSYNC 0
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| 307 | #endif
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| 308 |
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| 309 | #ifndef O_EXEC
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| 310 | # define O_EXEC O_RDONLY /* This is often close enough in older systems. */
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| 311 | #endif
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| 312 |
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| 313 | #ifndef O_IGNORE_CTTY
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| 314 | # define O_IGNORE_CTTY 0
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| 315 | #endif
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| 316 |
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| 317 | #ifndef O_NDELAY
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| 318 | # define O_NDELAY 0
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| 319 | #endif
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| 320 |
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| 321 | #ifndef O_NOATIME
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| 322 | # define O_NOATIME 0
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| 323 | #endif
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| 324 |
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| 325 | #ifndef O_NONBLOCK
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| 326 | # define O_NONBLOCK O_NDELAY
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| 327 | #endif
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| 328 |
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| 329 | /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
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| 330 | value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
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| 331 | or to 0 as fallback. */
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| 332 | #if @GNULIB_NONBLOCKING@
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| 333 | # if O_NONBLOCK
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| 334 | # define GNULIB_defined_O_NONBLOCK 0
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| 335 | # else
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| 336 | # define GNULIB_defined_O_NONBLOCK 1
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| 337 | # undef O_NONBLOCK
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| 338 | # define O_NONBLOCK 0x40000000
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| 339 | # endif
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| 340 | #endif
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| 341 |
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| 342 | #ifndef O_NOCTTY
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| 343 | # define O_NOCTTY 0
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| 344 | #endif
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| 345 |
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| 346 | #ifndef O_NOFOLLOW
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| 347 | # define O_NOFOLLOW 0
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| 348 | #endif
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| 349 |
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| 350 | #ifndef O_NOLINK
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| 351 | # define O_NOLINK 0
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| 352 | #endif
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| 353 |
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| 354 | #ifndef O_NOLINKS
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| 355 | # define O_NOLINKS 0
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| 356 | #endif
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| 357 |
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| 358 | #ifndef O_NOTRANS
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| 359 | # define O_NOTRANS 0
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| 360 | #endif
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| 361 |
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| 362 | #ifndef O_RSYNC
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| 363 | # define O_RSYNC 0
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| 364 | #endif
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| 365 |
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| 366 | #ifndef O_SEARCH
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| 367 | # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
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| 368 | #endif
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| 369 |
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| 370 | #ifndef O_SYNC
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| 371 | # define O_SYNC 0
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| 372 | #endif
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| 373 |
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| 374 | #ifndef O_TTY_INIT
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| 375 | # define O_TTY_INIT 0
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| 376 | #endif
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| 377 |
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| 378 | #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
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| 379 | # undef O_ACCMODE
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| 380 | # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
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| 381 | #endif
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| 382 |
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| 383 | /* For systems that distinguish between text and binary I/O.
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| 384 | O_BINARY is usually declared in fcntl.h */
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| 385 | #if !defined O_BINARY && defined _O_BINARY
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| 386 | /* For MSC-compatible compilers. */
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| 387 | # define O_BINARY _O_BINARY
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| 388 | # define O_TEXT _O_TEXT
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| 389 | #endif
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| 390 |
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| 391 | #if defined __BEOS__ || defined __HAIKU__
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| 392 | /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
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| 393 | # undef O_BINARY
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| 394 | # undef O_TEXT
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| 395 | #endif
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| 396 |
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| 397 | #ifndef O_BINARY
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| 398 | # define O_BINARY 0
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| 399 | # define O_TEXT 0
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|---|
| 400 | #endif
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|---|
| 401 |
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|---|
| 402 | /* Fix up the AT_* macros. */
|
|---|
| 403 |
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|---|
| 404 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
|
|---|
| 405 | value exceeds INT_MAX, so its use as an int doesn't conform to the
|
|---|
| 406 | C standard, and GCC and Sun C complain in some cases. If the bug
|
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| 407 | is present, undef AT_FDCWD here, so it can be redefined below. */
|
|---|
| 408 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
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|---|
| 409 | # undef AT_FDCWD
|
|---|
| 410 | #endif
|
|---|
| 411 |
|
|---|
| 412 | /* Use the same bit pattern as Solaris 9, but with the proper
|
|---|
| 413 | signedness. The bit pattern is important, in case this actually is
|
|---|
| 414 | Solaris with the above workaround. */
|
|---|
| 415 | #ifndef AT_FDCWD
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| 416 | # define AT_FDCWD (-3041965)
|
|---|
| 417 | #endif
|
|---|
| 418 |
|
|---|
| 419 | /* Use the same values as Solaris 9. This shouldn't matter, but
|
|---|
| 420 | there's no real reason to differ. */
|
|---|
| 421 | #ifndef AT_SYMLINK_NOFOLLOW
|
|---|
| 422 | # define AT_SYMLINK_NOFOLLOW 4096
|
|---|
| 423 | #endif
|
|---|
| 424 |
|
|---|
| 425 | #ifndef AT_REMOVEDIR
|
|---|
| 426 | # define AT_REMOVEDIR 1
|
|---|
| 427 | #endif
|
|---|
| 428 |
|
|---|
| 429 | /* Solaris 9 lacks these two, so just pick unique values. */
|
|---|
| 430 | #ifndef AT_SYMLINK_FOLLOW
|
|---|
| 431 | # define AT_SYMLINK_FOLLOW 2
|
|---|
| 432 | #endif
|
|---|
| 433 |
|
|---|
| 434 | #ifndef AT_EACCESS
|
|---|
| 435 | # define AT_EACCESS 4
|
|---|
| 436 | #endif
|
|---|
| 437 |
|
|---|
| 438 | /* Ignore this flag if not supported. */
|
|---|
| 439 | #ifndef AT_NO_AUTOMOUNT
|
|---|
| 440 | # define AT_NO_AUTOMOUNT 0
|
|---|
| 441 | #endif
|
|---|
| 442 |
|
|---|
| 443 | #endif /* _@GUARD_PREFIX@_FCNTL_H */
|
|---|
| 444 | #endif /* _@GUARD_PREFIX@_FCNTL_H */
|
|---|
| 445 | #endif
|
|---|
