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annotate lib/fcntl.in.h @ 40190:ef116535bf1a

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relocatable-prog: Use $ORIGIN trick on more platforms. * m4/relocatable.m4 (gl_RELOCATABLE_BODY): Use $ORIGIN trick also on FreeBSD >= 7.3, DragonFly >= 3.0, NetBSD >= 8.0, OpenBSD >= 5.4, Solaris >= 10, Haiku. But don't use it on Android. * build-aux/reloc-ldflags: Allow the use of the $ORIGIN trick also on Hurd, FreeBSD, DragonFly, NetBSD, OpenBSD, Solaris, Haiku.
author Bruno Haible <bruno@clisp.org>
date Wed, 20 Feb 2019 02:39:52 +0100
parents b06060465f09
children
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1 /* Like <fcntl.h>, but with non-working flags defined to 0.
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2
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3 Copyright (C) 2006-2019 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program 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 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 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 #else
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43 /* Normal invocation convention. */
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44
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45 #ifndef _@GUARD_PREFIX@_FCNTL_H
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46
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47 /* Needed before <sys/stat.h>.
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48 May also define off_t to a 64-bit type on native Windows. */
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49 #include <sys/types.h>
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50 /* On some systems other than glibc, <sys/stat.h> is a prerequisite of
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51 <fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
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52 But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
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53 extern "C" { ... } block, which leads to errors in C++ mode with the
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54 overridden <sys/stat.h> from gnulib. These errors are known to be gone
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55 with g++ version >= 4.3. */
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56 #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
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57 # include <sys/stat.h>
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58 #endif
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59 /* The include_next requires a split double-inclusion guard. */
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60 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
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61
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62 #ifndef _@GUARD_PREFIX@_FCNTL_H
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63 #define _@GUARD_PREFIX@_FCNTL_H
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64
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65 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
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66 # include <unistd.h>
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67 #endif
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68
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69 /* Native Windows platforms declare open(), creat() in <io.h>. */
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70 #if (@GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
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71 && (defined _WIN32 && ! defined __CYGWIN__)
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72 # include <io.h>
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73 #endif
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74
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75
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76 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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77
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78 /* The definition of _GL_ARG_NONNULL is copied here. */
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79
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80 /* The definition of _GL_WARN_ON_USE is copied here. */
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81
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82
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83 /* Declare overridden functions. */
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84
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85 #if @GNULIB_FCNTL@
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86 # if @REPLACE_FCNTL@
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87 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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88 # undef fcntl
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89 # define fcntl rpl_fcntl
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90 # endif
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91 _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
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92 _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
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93 # else
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94 # if !@HAVE_FCNTL@
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95 _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
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96 # endif
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97 _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
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98 # endif
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99 _GL_CXXALIASWARN (fcntl);
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100 #elif defined GNULIB_POSIXCHECK
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101 # undef fcntl
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102 # if HAVE_RAW_DECL_FCNTL
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103 _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
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104 "use gnulib module fcntl for portability");
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105 # endif
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106 #endif
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107
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108 #if @GNULIB_OPEN@
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109 # if @REPLACE_OPEN@
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110 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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111 # undef open
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112 # define open rpl_open
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113 # endif
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114 _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
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115 _GL_ARG_NONNULL ((1)));
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116 _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
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117 # else
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118 _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
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119 # endif
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120 /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
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121 default argument. _GL_CXXALIASWARN does not work in this case. */
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122 # if !defined __hpux
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123 _GL_CXXALIASWARN (open);
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124 # endif
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125 #elif defined GNULIB_POSIXCHECK
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126 # undef open
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127 /* Assume open is always declared. */
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128 _GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
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129 "use gnulib module open for portability");
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130 #endif
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131
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132 #if @GNULIB_OPENAT@
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133 # if @REPLACE_OPENAT@
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134 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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135 # undef openat
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136 # define openat rpl_openat
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137 # endif
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138 _GL_FUNCDECL_RPL (openat, int,
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139 (int fd, char const *file, int flags, /* mode_t mode */ ...)
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140 _GL_ARG_NONNULL ((2)));
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141 _GL_CXXALIAS_RPL (openat, int,
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142 (int fd, char const *file, int flags, /* mode_t mode */ ...));
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143 # else
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144 # if !@HAVE_OPENAT@
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145 _GL_FUNCDECL_SYS (openat, int,
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146 (int fd, char const *file, int flags, /* mode_t mode */ ...)
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147 _GL_ARG_NONNULL ((2)));
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148 # endif
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149 _GL_CXXALIAS_SYS (openat, int,
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150 (int fd, char const *file, int flags, /* mode_t mode */ ...));
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151 # endif
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152 _GL_CXXALIASWARN (openat);
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153 #elif defined GNULIB_POSIXCHECK
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154 # undef openat
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155 # if HAVE_RAW_DECL_OPENAT
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156 _GL_WARN_ON_USE (openat, "openat is not portable - "
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157 "use gnulib module openat for portability");
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diff changeset
158 # endif
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159 #endif
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160
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161
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162 /* Fix up the FD_* macros, only known to be missing on mingw. */
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163
27f6d88f60b1 Move more flags to lib/fcntl.in.h.
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164 #ifndef FD_CLOEXEC
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165 # define FD_CLOEXEC 1
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166 #endif
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167
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168 /* Fix up the supported F_* macros. Intentionally leave other F_*
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169 macros undefined. Only known to be missing on mingw. */
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170
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diff changeset
171 #ifndef F_DUPFD_CLOEXEC
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diff changeset
172 # define F_DUPFD_CLOEXEC 0x40000000
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173 /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
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174 # define GNULIB_defined_F_DUPFD_CLOEXEC 1
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diff changeset
175 #else
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176 # define GNULIB_defined_F_DUPFD_CLOEXEC 0
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177 #endif
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178
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179 #ifndef F_DUPFD
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180 # define F_DUPFD 1
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181 #endif
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182
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183 #ifndef F_GETFD
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184 # define F_GETFD 2
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185 #endif
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186
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187 /* Fix up the O_* macros. */
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188
17688
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189 /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
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190 to values outside 'int' range, so omit these misdefinitions.
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diff changeset
191 But avoid namespace pollution on non-AIX systems. */
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diff changeset
192 #ifdef _AIX
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193 # include <limits.h>
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194 # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
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195 # undef O_CLOEXEC
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diff changeset
196 # endif
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diff changeset
197 # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
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198 # undef O_NOFOLLOW
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199 # endif
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diff changeset
200 # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
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201 # undef O_TTY_INIT
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diff changeset
202 # endif
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diff changeset
203 #endif
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204
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205 #if !defined O_DIRECT && defined O_DIRECTIO
16235
18a38c9615f0 In commentary, do not use ` to quote.
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diff changeset
206 /* Tru64 spells it 'O_DIRECTIO'. */
9247
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207 # define O_DIRECT O_DIRECTIO
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diff changeset
208 #endif
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diff changeset
209
11859
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diff changeset
210 #if !defined O_CLOEXEC && defined O_NOINHERIT
16235
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diff changeset
211 /* Mingw spells it 'O_NOINHERIT'. */
11859
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212 # define O_CLOEXEC O_NOINHERIT
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diff changeset
213 #endif
27f6d88f60b1 Move more flags to lib/fcntl.in.h.
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214
13664
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
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diff changeset
215 #ifndef O_CLOEXEC
19052
637f3a63efbd open: support O_CLOEXEC
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diff changeset
216 # define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */
637f3a63efbd open: support O_CLOEXEC
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diff changeset
217 # define GNULIB_defined_O_CLOEXEC 1
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diff changeset
218 #else
637f3a63efbd open: support O_CLOEXEC
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diff changeset
219 # define GNULIB_defined_O_CLOEXEC 0
13664
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
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diff changeset
220 #endif
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221
9247
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222 #ifndef O_DIRECT
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223 # define O_DIRECT 0
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224 #endif
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225
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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226 #ifndef O_DIRECTORY
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227 # define O_DIRECTORY 0
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228 #endif
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229
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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230 #ifndef O_DSYNC
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diff changeset
231 # define O_DSYNC 0
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diff changeset
232 #endif
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233
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diff changeset
234 #ifndef O_EXEC
17152
22b1a8f00587 fcntl-h: default O_SEARCH, O_EXEC back to O_RDONLY
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diff changeset
235 # define O_EXEC O_RDONLY /* This is often close enough in older systems. */
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diff changeset
236 #endif
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237
17135
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238 #ifndef O_IGNORE_CTTY
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239 # define O_IGNORE_CTTY 0
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diff changeset
240 #endif
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241
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242 #ifndef O_NDELAY
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243 # define O_NDELAY 0
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244 #endif
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245
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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246 #ifndef O_NOATIME
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247 # define O_NOATIME 0
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248 #endif
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249
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250 #ifndef O_NONBLOCK
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251 # define O_NONBLOCK O_NDELAY
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252 #endif
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253
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254 /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
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255 value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
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diff changeset
256 or to 0 as fallback. */
14532
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257 #if @GNULIB_NONBLOCKING@
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258 # if O_NONBLOCK
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259 # define GNULIB_defined_O_NONBLOCK 0
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260 # else
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261 # define GNULIB_defined_O_NONBLOCK 1
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262 # undef O_NONBLOCK
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263 # define O_NONBLOCK 0x40000000
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264 # endif
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265 #endif
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266
9247
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267 #ifndef O_NOCTTY
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268 # define O_NOCTTY 0
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diff changeset
269 #endif
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270
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271 #ifndef O_NOFOLLOW
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272 # define O_NOFOLLOW 0
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273 #endif
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274
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275 #ifndef O_NOLINK
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276 # define O_NOLINK 0
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277 #endif
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278
9247
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279 #ifndef O_NOLINKS
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diff changeset
280 # define O_NOLINKS 0
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diff changeset
281 #endif
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282
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283 #ifndef O_NOTRANS
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284 # define O_NOTRANS 0
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diff changeset
285 #endif
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286
9247
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287 #ifndef O_RSYNC
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diff changeset
288 # define O_RSYNC 0
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diff changeset
289 #endif
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290
13616
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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diff changeset
291 #ifndef O_SEARCH
17152
22b1a8f00587 fcntl-h: default O_SEARCH, O_EXEC back to O_RDONLY
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diff changeset
292 # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
13616
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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diff changeset
293 #endif
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294
9247
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295 #ifndef O_SYNC
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diff changeset
296 # define O_SYNC 0
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diff changeset
297 #endif
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298
11877
18205f9302ac fcntl-h: add O_TTY_INIT support
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diff changeset
299 #ifndef O_TTY_INIT
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diff changeset
300 # define O_TTY_INIT 0
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diff changeset
301 #endif
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diff changeset
302
17148
8e5a994a5d5b fcntl-h: default O_SEARCH, O_EXEC to O_PATH if available
Paul Eggert <eggert@cs.ucla.edu>
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diff changeset
303 #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
14534
2078181e301c fcntl-h: fix O_ACCMODE on cygwin
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diff changeset
304 # undef O_ACCMODE
2078181e301c fcntl-h: fix O_ACCMODE on cygwin
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diff changeset
305 # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
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diff changeset
306 #endif
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diff changeset
307
9247
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parents:
diff changeset
308 /* For systems that distinguish between text and binary I/O.
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diff changeset
309 O_BINARY is usually declared in fcntl.h */
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diff changeset
310 #if !defined O_BINARY && defined _O_BINARY
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diff changeset
311 /* For MSC-compatible compilers. */
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diff changeset
312 # define O_BINARY _O_BINARY
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diff changeset
313 # define O_TEXT _O_TEXT
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diff changeset
314 #endif
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diff changeset
315
10778
ddc567d280d1 Treat Haiku like BeOS.
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diff changeset
316 #if defined __BEOS__ || defined __HAIKU__
ddc567d280d1 Treat Haiku like BeOS.
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diff changeset
317 /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
9247
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318 # undef O_BINARY
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319 # undef O_TEXT
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diff changeset
320 #endif
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diff changeset
321
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322 #ifndef O_BINARY
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323 # define O_BINARY 0
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324 # define O_TEXT 0
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diff changeset
325 #endif
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326
11942
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diff changeset
327 /* Fix up the AT_* macros. */
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diff changeset
328
d1047ae4b8d5 openat: declare in POSIX headers
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diff changeset
329 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
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diff changeset
330 value exceeds INT_MAX, so its use as an int doesn't conform to the
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diff changeset
331 C standard, and GCC and Sun C complain in some cases. If the bug
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diff changeset
332 is present, undef AT_FDCWD here, so it can be redefined below. */
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diff changeset
333 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
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diff changeset
334 # undef AT_FDCWD
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diff changeset
335 #endif
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diff changeset
336
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diff changeset
337 /* Use the same bit pattern as Solaris 9, but with the proper
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diff changeset
338 signedness. The bit pattern is important, in case this actually is
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diff changeset
339 Solaris with the above workaround. */
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diff changeset
340 #ifndef AT_FDCWD
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diff changeset
341 # define AT_FDCWD (-3041965)
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diff changeset
342 #endif
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diff changeset
343
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diff changeset
344 /* Use the same values as Solaris 9. This shouldn't matter, but
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diff changeset
345 there's no real reason to differ. */
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diff changeset
346 #ifndef AT_SYMLINK_NOFOLLOW
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diff changeset
347 # define AT_SYMLINK_NOFOLLOW 4096
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diff changeset
348 #endif
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diff changeset
349
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diff changeset
350 #ifndef AT_REMOVEDIR
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351 # define AT_REMOVEDIR 1
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352 #endif
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diff changeset
353
11945
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diff changeset
354 /* Solaris 9 lacks these two, so just pick unique values. */
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diff changeset
355 #ifndef AT_SYMLINK_FOLLOW
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diff changeset
356 # define AT_SYMLINK_FOLLOW 2
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diff changeset
357 #endif
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diff changeset
358
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diff changeset
359 #ifndef AT_EACCESS
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diff changeset
360 # define AT_EACCESS 4
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diff changeset
361 #endif
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diff changeset
362
9247
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diff changeset
363
14840
5f709022a256 Allow multiple gnulib generated include files to be combined.
Bruno Haible <bruno@clisp.org>
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diff changeset
364 #endif /* _@GUARD_PREFIX@_FCNTL_H */
5f709022a256 Allow multiple gnulib generated include files to be combined.
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diff changeset
365 #endif /* _@GUARD_PREFIX@_FCNTL_H */
10533
d4b37870fdc9 Override open more carefully.
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parents: 10528
diff changeset
366 #endif