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annotate lib/fcntl.in.h @ 14079:97fc9a21a8fb

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maint: update almost all copyright ranges to include 2011 Run the new "make update-copyright" rule.
author Jim Meyering <meyering@redhat.com>
date Sat, 01 Jan 2011 20:17:23 +0100 (2011-01-01)
parents 4b44ba76787f
children 0b3f0c54fbc8
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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) 2006-2011 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 <http://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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28 #include <sys/types.h>
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29 /* On some systems other than glibc, <sys/stat.h> is a prerequisite of
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30 <fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
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31 But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
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32 extern "C" { ... } block, which leads to errors in C++ mode with the
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33 overridden <sys/stat.h> from gnulib. These errors are known to be gone
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34 with g++ version >= 4.3. */
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35 #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
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36 # include <sys/stat.h>
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37 #endif
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38 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
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39
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40 #else
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41 /* Normal invocation convention. */
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42
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43 #ifndef _GL_FCNTL_H
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44
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45 #include <sys/types.h>
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46 /* On some systems other than glibc, <sys/stat.h> is a prerequisite of
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47 <fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
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48 But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
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49 extern "C" { ... } block, which leads to errors in C++ mode with the
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50 overridden <sys/stat.h> from gnulib. These errors are known to be gone
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51 with g++ version >= 4.3. */
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52 #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
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53 # include <sys/stat.h>
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54 #endif
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55 /* The include_next requires a split double-inclusion guard. */
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56 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
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57
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58 #ifndef _GL_FCNTL_H
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59 #define _GL_FCNTL_H
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60
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61 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
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62 # include <unistd.h>
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63 #endif
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66 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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67
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68 /* The definition of _GL_ARG_NONNULL is copied here. */
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69
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70 /* The definition of _GL_WARN_ON_USE is copied here. */
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73 /* Declare overridden functions. */
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74
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75 #if @GNULIB_FCNTL@
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76 # if @REPLACE_FCNTL@
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77 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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78 # undef fcntl
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79 # define fcntl rpl_fcntl
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80 # endif
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81 _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
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82 _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
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83 # else
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84 # if !@HAVE_FCNTL@
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85 _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
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86 # endif
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87 _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
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88 # endif
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89 _GL_CXXALIASWARN (fcntl);
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90 #elif defined GNULIB_POSIXCHECK
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91 # undef fcntl
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92 # if HAVE_RAW_DECL_FCNTL
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93 _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
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94 "use gnulib module fcntl for portability");
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95 # endif
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96 #endif
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97
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98 #if @GNULIB_OPEN@
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99 # if @REPLACE_OPEN@
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100 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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101 # undef open
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102 # define open rpl_open
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103 # endif
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104 _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
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105 _GL_ARG_NONNULL ((1)));
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106 _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
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107 # else
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108 _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
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109 # endif
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110 /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
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111 default argument. _GL_CXXALIASWARN does not work in this case. */
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112 # if !defined __hpux
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113 _GL_CXXALIASWARN (open);
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114 # endif
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115 #elif defined GNULIB_POSIXCHECK
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116 # undef open
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117 /* Assume open is always declared. */
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118 _GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
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119 "use gnulib module open for portability");
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120 #endif
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121
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122 #if @GNULIB_OPENAT@
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123 # if @REPLACE_OPENAT@
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124 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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125 # undef openat
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126 # define openat rpl_openat
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127 # endif
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128 _GL_FUNCDECL_RPL (openat, int,
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129 (int fd, char const *file, int flags, /* mode_t mode */ ...)
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130 _GL_ARG_NONNULL ((2)));
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131 _GL_CXXALIAS_RPL (openat, int,
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132 (int fd, char const *file, int flags, /* mode_t mode */ ...));
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133 # else
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134 # if !@HAVE_OPENAT@
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135 _GL_FUNCDECL_SYS (openat, int,
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136 (int fd, char const *file, int flags, /* mode_t mode */ ...)
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137 _GL_ARG_NONNULL ((2)));
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138 # endif
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139 _GL_CXXALIAS_SYS (openat, int,
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140 (int fd, char const *file, int flags, /* mode_t mode */ ...));
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141 # endif
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142 _GL_CXXALIASWARN (openat);
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143 #elif defined GNULIB_POSIXCHECK
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144 # undef openat
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145 # if HAVE_RAW_DECL_OPENAT
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146 _GL_WARN_ON_USE (openat, "openat is not portable - "
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147 "use gnulib module openat for portability");
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148 # endif
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149 #endif
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150
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151
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152 /* Fix up the FD_* macros, only known to be missing on mingw. */
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153
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154 #ifndef FD_CLOEXEC
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155 # define FD_CLOEXEC 1
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156 #endif
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157
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158 /* Fix up the supported F_* macros. Intentionally leave other F_*
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159 macros undefined. Only known to be missing on mingw. */
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160
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161 #ifndef F_DUPFD_CLOEXEC
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162 # define F_DUPFD_CLOEXEC 0x40000000
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163 /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
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164 # define GNULIB_defined_F_DUPFD_CLOEXEC 1
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165 #else
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166 # define GNULIB_defined_F_DUPFD_CLOEXEC 0
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167 #endif
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168
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169 #ifndef F_DUPFD
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170 # define F_DUPFD 1
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171 #endif
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172
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173 #ifndef F_GETFD
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174 # define F_GETFD 2
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175 #endif
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176
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177 /* Fix up the O_* macros. */
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178
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179 #if !defined O_DIRECT && defined O_DIRECTIO
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180 /* Tru64 spells it `O_DIRECTIO'. */
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181 # define O_DIRECT O_DIRECTIO
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182 #endif
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183
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184 #if !defined O_CLOEXEC && defined O_NOINHERIT
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185 /* Mingw spells it `O_NOINHERIT'. Intentionally leave it
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186 undefined if not available. */
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187 # define O_CLOEXEC O_NOINHERIT
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188 #endif
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189
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190 #ifndef O_CLOEXEC
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191 # define O_CLOEXEC 0
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192 #endif
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193
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194 #ifndef O_DIRECT
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195 # define O_DIRECT 0
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196 #endif
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197
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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198 #ifndef O_DIRECTORY
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199 # define O_DIRECTORY 0
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diff changeset
200 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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201
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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202 #ifndef O_DSYNC
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203 # define O_DSYNC 0
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diff changeset
204 #endif
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205
13664
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diff changeset
206 #ifndef O_EXEC
241057e2e60f fcntl-h: define O_CLOEXEC and O_EXEC if not defined; use new defines
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diff changeset
207 # define O_EXEC O_RDONLY /* This is often close enough in older systems. */
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diff changeset
208 #endif
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209
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210 #ifndef O_NDELAY
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211 # define O_NDELAY 0
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diff changeset
212 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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213
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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diff changeset
214 #ifndef O_NOATIME
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215 # define O_NOATIME 0
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diff changeset
216 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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217
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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218 #ifndef O_NONBLOCK
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219 # define O_NONBLOCK O_NDELAY
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220 #endif
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221
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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222 #ifndef O_NOCTTY
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223 # define O_NOCTTY 0
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diff changeset
224 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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225
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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226 #ifndef O_NOFOLLOW
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227 # define O_NOFOLLOW 0
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diff changeset
228 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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229
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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230 #ifndef O_NOLINKS
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diff changeset
231 # define O_NOLINKS 0
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diff changeset
232 #endif
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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233
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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234 #ifndef O_RSYNC
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235 # define O_RSYNC 0
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236 #endif
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237
13616
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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238 #ifndef O_SEARCH
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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diff changeset
239 # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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diff changeset
240 #endif
acc972b5da60 fcntl-h, etc.: prefer O_SEARCH to O_RDONLY when applicable
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241
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242 #ifndef O_SYNC
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243 # define O_SYNC 0
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244 #endif
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245
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246 #ifndef O_TTY_INIT
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247 # define O_TTY_INIT 0
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248 #endif
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249
9247
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250 /* For systems that distinguish between text and binary I/O.
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diff changeset
251 O_BINARY is usually declared in fcntl.h */
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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diff changeset
252 #if !defined O_BINARY && defined _O_BINARY
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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diff changeset
253 /* For MSC-compatible compilers. */
dc86ef955b9b Rename fcntl_.h to fcntl.in.h.
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254 # define O_BINARY _O_BINARY
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255 # define O_TEXT _O_TEXT
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256 #endif
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257
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258 #if defined __BEOS__ || defined __HAIKU__
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259 /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
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260 # undef O_BINARY
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261 # undef O_TEXT
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262 #endif
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263
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264 #ifndef O_BINARY
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265 # define O_BINARY 0
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266 # define O_TEXT 0
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267 #endif
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268
11942
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269 /* Fix up the AT_* macros. */
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270
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271 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
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272 value exceeds INT_MAX, so its use as an int doesn't conform to the
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273 C standard, and GCC and Sun C complain in some cases. If the bug
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274 is present, undef AT_FDCWD here, so it can be redefined below. */
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275 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
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276 # undef AT_FDCWD
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277 #endif
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278
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279 /* Use the same bit pattern as Solaris 9, but with the proper
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280 signedness. The bit pattern is important, in case this actually is
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281 Solaris with the above workaround. */
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282 #ifndef AT_FDCWD
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283 # define AT_FDCWD (-3041965)
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284 #endif
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285
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286 /* Use the same values as Solaris 9. This shouldn't matter, but
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287 there's no real reason to differ. */
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288 #ifndef AT_SYMLINK_NOFOLLOW
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289 # define AT_SYMLINK_NOFOLLOW 4096
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290 #endif
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291
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292 #ifndef AT_REMOVEDIR
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293 # define AT_REMOVEDIR 1
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294 #endif
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295
11945
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296 /* Solaris 9 lacks these two, so just pick unique values. */
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297 #ifndef AT_SYMLINK_FOLLOW
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298 # define AT_SYMLINK_FOLLOW 2
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299 #endif
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300
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301 #ifndef AT_EACCESS
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302 # define AT_EACCESS 4
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303 #endif
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304
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305
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306 #endif /* _GL_FCNTL_H */
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307 #endif /* _GL_FCNTL_H */
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308 #endif