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2075
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1 /* |
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2 |
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3 Copyright (C) 1996 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 // Thomas Baier <baier@ci.tuwien.ac.at> added the original versions of |
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24 // the following functions: |
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25 // |
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26 // mkfifo unlink waitpid |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <cstdio> |
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33 |
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34 #ifdef HAVE_UNISTD_H |
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35 #include <sys/types.h> |
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36 #include <unistd.h> |
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37 #endif |
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38 |
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39 #ifdef HAVE_FCNTL_H |
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40 #include <fcntl.h> |
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41 #endif |
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42 |
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43 #include "defun.h" |
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44 #include "error.h" |
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45 #include "file-ops.h" |
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46 #include "help.h" |
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47 #include "lo-utils.h" |
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48 #include "oct-map.h" |
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49 #include "oct-obj.h" |
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50 #include "oct-stdstrm.h" |
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51 #include "oct-stream.h" |
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52 #include "sysdep.h" |
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53 #include "syswait.h" |
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54 #include "utils.h" |
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55 |
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56 static Octave_map |
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57 mk_stat_map (const file_stat& fs) |
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58 { |
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59 Octave_map m; |
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60 |
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61 m["dev"] = (double) fs.dev (); |
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62 m["ino"] = (double) fs.ino (); |
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63 m["modestr"] = fs.mode_as_string (); |
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64 m["nlink"] = (double) fs.nlink (); |
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65 m["uid"] = (double) fs.uid (); |
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66 m["gid"] = (double) fs.gid (); |
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67 #if defined (HAVE_ST_RDEV) |
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68 m["rdev"] = (double) fs.rdev (); |
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69 #endif |
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70 m["size"] = (double) fs.size (); |
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71 m["atime"] = (double) fs.atime (); |
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72 m["mtime"] = (double) fs.mtime (); |
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73 m["ctime"] = (double) fs.ctime (); |
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74 #if defined (HAVE_ST_BLKSIZE) |
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75 m["blksize"] = (double) fs.blksize (); |
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76 #endif |
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77 #if defined (HAVE_ST_BLOCKS) |
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78 m["blocks"] = (double) fs.blocks (); |
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79 #endif |
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80 |
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81 return m; |
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82 } |
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83 |
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84 static void |
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85 gripe_not_supported (const char *fcn) |
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86 { |
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87 error ("%s: not supported on this system", fcn); |
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88 } |
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89 |
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90 DEFUN(dup2, args, , |
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91 "fid = dup2 (old, new)") |
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92 { |
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93 double retval = -1.0; |
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94 |
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95 #if defined (HAVE_DUP2) |
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96 int nargin = args.length (); |
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97 |
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98 if (nargin == 2) |
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99 { |
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100 double d_old = args(0).double_value (); |
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101 double d_new = args(1).double_value (); |
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102 |
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103 if (! error_state) |
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104 { |
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105 if (D_NINT (d_old) == d_old && D_NINT (d_new) == d_new) |
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106 { |
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107 int i_old = NINT (d_old); |
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108 int i_new = NINT (d_new); |
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109 |
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110 // XXX FIXME XXX -- are these checks sufficient? |
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111 if (i_old >= 0 && i_new >= 0) |
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112 retval = (double) dup2 (i_old, i_new); |
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113 else |
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114 error ("dup2: invalid file id"); |
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115 } |
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116 else |
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117 error ("dup2: arguments must be integer values"); |
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118 } |
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119 } |
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120 else |
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121 print_usage ("dup2"); |
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122 #else |
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123 gripe_not_supported ("dup2"); |
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124 #endif |
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125 |
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126 return retval; |
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127 } |
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128 |
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129 DEFUN(exec, args, , |
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130 "exec (file, args)") |
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131 { |
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132 double retval = -1.0; |
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133 |
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134 #if defined (HAVE_EXECVP) |
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135 int nargin = args.length (); |
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136 |
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137 if (nargin == 1 || nargin == 2) |
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138 { |
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139 string exec_file = args(0).string_value (); |
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140 |
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141 if (! error_state) |
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142 { |
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143 char **exec_args = 0; |
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144 |
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145 if (nargin == 2) |
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146 { |
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147 charMatrix chm = args(1).all_strings (); |
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148 |
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149 if (! error_state) |
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150 { |
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151 int nr = chm.rows (); |
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152 int nc = chm.cols (); |
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153 |
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154 exec_args = new char * [nr+2]; |
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155 |
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156 // XXX FIXME XXX -- potential leak? |
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157 |
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158 exec_args[0] = strsave (exec_file.c_str ()); |
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159 exec_args[nr+1] = 0; |
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160 |
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161 for (int i = 0; i < nr; i++) |
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162 { |
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163 exec_args[i+1] = new char [nc+1]; |
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164 |
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165 for (int j = 0; j < nc; j++) |
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166 exec_args[i+1][j] = chm.elem (i, j); |
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167 |
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168 exec_args[i+1][nc] = '\0'; |
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169 } |
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170 } |
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171 else |
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172 error ("exec: arguments must be strings"); |
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173 } |
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174 else |
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175 { |
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176 exec_args = new char * [2]; |
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177 |
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178 exec_args[0] = strsave (exec_file.c_str ()); |
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179 exec_args[1] = 0; |
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180 } |
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181 |
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182 if (! error_state) |
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183 execvp (exec_file.c_str (), exec_args); |
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184 } |
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185 else |
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186 error ("exec: first argument must be a string"); |
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187 } |
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188 else |
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189 print_usage ("exec"); |
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190 #else |
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191 gripe_not_supported ("exec"); |
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192 #endif |
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193 |
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194 return retval; |
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195 } |
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196 |
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197 DEFUN(fcntl, args, , |
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198 "fcntl (fid, request, argument)") |
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199 { |
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200 double retval = -1.0; |
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201 |
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202 #if defined (HAVE_FCNTL) |
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203 int nargin = args.length (); |
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204 |
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205 if (nargin == 3) |
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206 { |
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207 double d_fid = args(0).double_value (); |
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208 double d_req = args(1).double_value (); |
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209 double d_arg = args(2).double_value (); |
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210 |
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211 if (! error_state |
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212 && D_NINT (d_fid) == d_fid |
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213 && D_NINT (d_req) == d_req |
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214 && D_NINT (d_arg) == d_arg) |
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215 { |
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216 int fid = NINT (d_fid); |
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217 int req = NINT (d_req); |
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218 int arg = NINT (d_arg); |
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219 |
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220 // XXX FIXME XXX -- Need better checking here? |
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221 if (fid < 0) |
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222 error ("fcntl: invalid file id"); |
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223 else |
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224 retval = fcntl (fid, req, arg); |
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225 } |
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226 else |
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227 error ("fcntl: file id must be an integer"); |
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228 } |
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229 else |
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230 print_usage ("fcntl"); |
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231 #else |
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232 gripe_not_supported ("fcntl"); |
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233 #endif |
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234 |
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235 return retval; |
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236 } |
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237 |
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238 DEFUN(fork, args, , |
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239 "fork (): create a copy of the current process") |
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240 { |
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241 double retval = -1.0; |
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242 |
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243 #if defined (HAVE_FORK) |
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244 int nargin = args.length (); |
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245 |
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246 if (nargin == 0) |
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247 retval = fork (); |
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248 else |
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249 print_usage ("fork"); |
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250 #else |
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251 gripe_not_supported ("fork"); |
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252 #endif |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 DEFUN(getpgrp, args, , |
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258 "pgid = getpgrp (): return the process group id of the current process") |
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259 { |
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260 double retval = -1.0; |
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261 |
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262 #if defined (HAVE_GETPGRP) |
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263 int nargin = args.length (); |
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264 |
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265 if (nargin == 0) |
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266 retval = getpgrp (); |
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267 else |
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268 print_usage ("getpgrp"); |
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269 #else |
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270 gripe_not_supported ("getpgrp"); |
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271 #endif |
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272 |
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273 return retval; |
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274 } |
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275 |
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276 DEFUN(getpid, args, , |
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277 "pid = getpid (): return the process id of the current process") |
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278 { |
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279 double retval = -1.0; |
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280 |
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281 #if defined (HAVE_GETPID) |
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282 int nargin = args.length (); |
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283 |
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284 if (nargin == 0) |
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285 retval = getpid (); |
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286 else |
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287 print_usage ("getpid"); |
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288 #else |
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289 gripe_not_supported ("getpid"); |
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290 #endif |
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291 |
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292 return retval; |
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293 } |
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294 |
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295 DEFUN(getppid, args, , |
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296 "pid = getppid (): return the process id of the parent process") |
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297 { |
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298 double retval = -1.0; |
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299 |
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300 #if defined (HAVE_GETPPID) |
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301 int nargin = args.length (); |
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302 |
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303 if (nargin == 0) |
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304 retval = getppid (); |
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305 else |
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306 print_usage ("getppid"); |
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307 #else |
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308 gripe_not_supported ("getppid"); |
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309 #endif |
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310 |
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311 return retval; |
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312 } |
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313 |
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314 DEFUN (lstat, args, , |
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315 "lstat (NAME)\n\ |
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316 \n\ |
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317 Like stat (NAME), but if NAME refers to a symbolic link, returns\n\ |
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318 information about the link itself, not the file that it points to.") |
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319 { |
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320 tree_constant retval = -1.0; |
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321 |
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322 if (args.length () == 1) |
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323 { |
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324 string fname = oct_tilde_expand (args(0).string_value ()); |
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325 |
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326 if (! error_state) |
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327 { |
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328 file_stat fs (fname, false); |
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329 |
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330 if (fs) |
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331 retval = tree_constant (mk_stat_map (fs)); |
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332 } |
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333 } |
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334 else |
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335 print_usage ("lstat"); |
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336 |
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337 return retval; |
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338 } |
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339 |
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340 DEFUN (mkfifo, args, , |
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341 "STATUS = mkfifo (NAME, MODE)\n\ |
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342 \n\ |
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343 Create a FIFO special file named NAME with file mode MODE\n\ |
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344 \n\ |
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345 STATUS is:\n\ |
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346 \n\ |
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347 != 0 : if mkfifo failed\n\ |
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348 0 : if the FIFO special file could be created") |
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349 { |
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350 double retval = -1.0; |
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351 |
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352 int nargin = args.length (); |
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353 |
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354 if (nargin == 2) |
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355 { |
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356 if (args(0).is_string ()) |
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357 { |
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358 string name = args(0).string_value (); |
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359 |
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360 if (args(1).is_scalar_type ()) |
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361 { |
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362 long mode = (long) args(1).double_value (); |
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363 |
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364 retval = oct_mkfifo (name, mode); |
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365 } |
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366 else |
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367 error ("mkfifo: MODE must be an integer"); |
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368 } |
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369 else |
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370 error ("mkfifo: file name must be a string"); |
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371 |
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372 } |
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373 else |
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374 print_usage ("mkfifo"); |
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375 |
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376 return retval; |
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377 } |
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378 |
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379 DEFUN (pipe, args, , |
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380 "[file_ids, status] = pipe ()") |
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381 { |
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382 Octave_object retval (2, tree_constant (-1.0)); |
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383 |
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384 #if defined (HAVE_PIPE) |
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385 int nargin = args.length (); |
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386 |
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387 if (nargin == 0) |
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388 { |
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389 int fid[2]; |
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390 |
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391 if (pipe (fid) >= 0) |
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392 { |
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393 FILE *in_file = fdopen (fid[0], "r"); |
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394 FILE *out_file = fdopen (fid[1], "w"); |
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395 |
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396 octave_istdiostream *is |
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397 = new octave_istdiostream (string (), in_file); |
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398 |
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399 octave_ostdiostream *os |
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400 = new octave_ostdiostream (string (), out_file); |
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401 |
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402 Matrix file_ids (1, 2); |
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403 |
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404 file_ids.elem (0, 0) = octave_stream_list::insert (is); |
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405 file_ids.elem (0, 1) = octave_stream_list::insert (os); |
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406 |
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407 retval(0) = file_ids; |
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408 retval(1) = 0.0; |
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409 } |
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410 } |
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411 else |
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412 print_usage ("pipe"); |
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413 #else |
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414 gripe_not_supported ("pipe"); |
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415 #endif |
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416 |
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417 return retval; |
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418 } |
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419 |
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420 DEFUN (stat, args, , |
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421 "stat (NAME)\n\ |
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422 \n\ |
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423 Given the name of a file, return a structure with the following |
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424 elements:\n\ |
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425 \n\ |
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426 dev : id of device containing a directory entry for this file\n\ |
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427 ino : file number of the file\n\ |
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428 modestr : file mode, as a string of ten letters or dashes as in ls -l\n\ |
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429 nlink : number of links\n\ |
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430 uid : user id of file's owner\n\ |
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431 gid : group id of file's group \n\ |
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432 rdev : id of device for block or character special files\n\ |
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433 size : size in bytes\n\ |
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434 atime : time of last access\n\ |
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435 mtime : time of last modification\n\ |
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436 ctime : time of last file status change\n\ |
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437 blksize : size of blocks in the file\n\ |
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438 blocks : number of blocks allocated for file\n\ |
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439 \n\ |
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440 If the file does not exist, -1 is returned.") |
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441 { |
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442 tree_constant retval = -1.0; |
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443 |
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444 if (args.length () == 1) |
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445 { |
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446 string fname = oct_tilde_expand (args(0).string_value ()); |
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447 |
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448 if (! error_state) |
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449 { |
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450 file_stat fs (fname); |
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451 |
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452 if (fs) |
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453 retval = tree_constant (mk_stat_map (fs)); |
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454 } |
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455 } |
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456 else |
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457 print_usage ("stat"); |
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458 |
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459 return retval; |
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460 } |
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461 |
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462 DEFUN (unlink, args, , |
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463 "STATUS = unlink (NAME)\n\ |
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464 \n\ |
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465 Delete the file NAME\n\ |
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466 \n\ |
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467 STATUS is:\n\ |
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468 \n\ |
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469 != 0 : if unlink failed\n\ |
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470 0 : if the file could be successfully deleted") |
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471 { |
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472 double retval = -1.0; |
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473 |
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474 int nargin = args.length (); |
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475 |
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476 if (nargin == 1) |
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477 { |
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478 if (args(0).is_string ()) |
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479 { |
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480 string name = args(0).string_value (); |
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481 |
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482 retval = oct_unlink (name); |
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483 } |
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484 else |
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485 error ("unlink: file name must be a string"); |
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486 } |
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487 else |
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488 print_usage ("unlink"); |
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489 |
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490 return retval; |
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491 } |
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492 |
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493 DEFUN (waitpid, args, , |
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494 "STATUS = waitpid (PID, OPTIONS)\n\ |
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495 \n\ |
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496 wait for process PID to terminate\n\ |
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497 \n\ |
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498 PID can be:\n\ |
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499 \n\ |
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500 -1 : wait for any child process\n\ |
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501 0 : wait for any child process whose process group ID is equal to\n\ |
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502 that of the Octave interpreter process.\n\ |
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503 > 0 : wait for termination of the child process with ID PID.\n\ |
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504 \n\ |
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505 OPTIONS is:\n\ |
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506 \n\ |
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507 0 : wait until signal is received or a child process exits (this\n\ |
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508 is the default if the OPTIONS argument is missing) \n\ |
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509 1 : do not hang if status is not immediately available\n\ |
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510 2 : report the status of any child processes that are\n\ |
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511 stopped, and whose status has not yet been reported\n\ |
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512 since they stopped\n\ |
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513 3 : implies both 1 and 2\n\ |
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514 \n\ |
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515 STATUS is:\n\ |
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516 \n\ |
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517 -1 : if an error occured\n\ |
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518 > 0 : the process ID of the child process that exited") |
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519 { |
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520 double retval = -1.0; |
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521 |
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522 #if defined (HAVE_WAITPID) |
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523 int nargin = args.length (); |
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524 |
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525 if (nargin == 1 || nargin == 2) |
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526 { |
|
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527 double pid_num = args(0).double_value (); |
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528 |
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529 if (! error_state) |
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530 { |
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531 if (D_NINT (pid_num) != pid_num) |
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532 error ("waitpid: PID must be an integer value"); |
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533 else |
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534 { |
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535 pid_t pid = (pid_t) pid_num; |
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536 |
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537 int options = 0; |
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538 |
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539 if (args.length () == 2) |
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540 { |
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541 double options_num = args(1).double_value (); |
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542 |
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543 if (! error_state) |
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544 { |
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545 if (D_NINT (options_num) != options_num) |
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546 error ("waitpid: PID must be an integer value"); |
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547 else |
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548 { |
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549 options = NINT (options_num); |
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550 if (options < 0 || options > 3) |
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551 error ("waitpid: invalid OPTIONS value specified"); |
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552 } |
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553 } |
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554 } |
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555 |
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556 if (! error_state) |
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557 retval = waitpid (pid, 0, options); |
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558 } |
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559 } |
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560 } |
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561 else |
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562 print_usage ("waitpid"); |
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563 #else |
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564 gripe_not_supported ("waitpid"); |
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565 #endif |
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566 |
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567 return retval; |
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568 } |
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569 |
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570 #if !defined (O_NONBLOCK) && defined (O_NDELAY) |
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571 #define O_NONBLOCK O_NDELAY |
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572 #endif |
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573 |
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574 void |
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|
575 symbols_of_syscalls (void) |
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576 { |
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|
577 #if defined (F_DUPFD) |
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|
578 DEFCONST (F_DUPFD, (double) F_DUPFD, 0, 0, |
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579 ""); |
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580 #endif |
|
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581 |
|
|
582 #if defined (F_GETFD) |
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|
583 DEFCONST (F_GETFD, (double) F_GETFD, 0, 0, |
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584 ""); |
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585 #endif |
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|
586 |
|
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587 #if defined (F_GETFL) |
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588 DEFCONST (F_GETFL, (double) F_GETFL, 0, 0, |
|
|
589 ""); |
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590 #endif |
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|
591 |
|
|
592 #if defined (F_SETFD) |
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|
593 DEFCONST (F_SETFD, (double) F_SETFD, 0, 0, |
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|
594 ""); |
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|
595 #endif |
|
|
596 |
|
|
597 #if defined (F_SETFL) |
|
|
598 DEFCONST (F_SETFL, (double) F_SETFL, 0, 0, |
|
|
599 ""); |
|
|
600 #endif |
|
|
601 |
|
|
602 #if defined (O_APPEND) |
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603 DEFCONST (O_APPEND, (double) O_APPEND, 0, 0, |
|
|
604 ""); |
|
|
605 #endif |
|
|
606 |
|
|
607 #if defined (O_CREAT) |
|
|
608 DEFCONST (O_CREAT, (double) O_CREAT, 0, 0, |
|
|
609 ""); |
|
|
610 #endif |
|
|
611 |
|
|
612 #if defined (O_EXCL) |
|
|
613 DEFCONST (O_EXCL, (double) O_EXCL, 0, 0, |
|
|
614 ""); |
|
|
615 #endif |
|
|
616 |
|
|
617 #if defined (O_NONBLOCK) |
|
|
618 DEFCONST (O_NONBLOCK, (double) O_NONBLOCK, 0, 0, |
|
|
619 ""); |
|
|
620 #endif |
|
|
621 |
|
|
622 #if defined (O_RDONLY) |
|
|
623 DEFCONST (O_RDONLY, (double) O_RDONLY, 0, 0, |
|
|
624 ""); |
|
|
625 #endif |
|
|
626 |
|
|
627 #if defined (O_RDWR) |
|
|
628 DEFCONST (O_RDWR, (double) O_RDWR, 0, 0, |
|
|
629 ""); |
|
|
630 #endif |
|
|
631 |
|
|
632 #if defined (O_TRUNC) |
|
|
633 DEFCONST (O_TRUNC, (double) O_TRUNC, 0, 0, |
|
|
634 ""); |
|
|
635 #endif |
|
|
636 |
|
|
637 #if defined (O_WRONLY) |
|
|
638 DEFCONST (O_WRONLY, (double) O_WRONLY, 0, 0, |
|
|
639 ""); |
|
|
640 #endif |
|
|
641 } |
|
|
642 |
|
|
643 /* |
|
|
644 ;;; Local Variables: *** |
|
|
645 ;;; mode: C++ *** |
|
|
646 ;;; End: *** |
|
|
647 */ |
