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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 "gripes.h" |
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47 #include "help.h" |
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48 #include "lo-utils.h" |
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49 #include "oct-map.h" |
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50 #include "oct-obj.h" |
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51 #include "oct-stdstrm.h" |
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52 #include "oct-stream.h" |
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53 #include "sysdep.h" |
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54 #include "syswait.h" |
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55 #include "utils.h" |
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56 #include "variables.h" |
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57 |
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58 static Octave_map |
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59 mk_stat_map (const file_stat& fs) |
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60 { |
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61 Octave_map m; |
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62 |
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63 m["dev"] = (double) fs.dev (); |
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64 m["ino"] = (double) fs.ino (); |
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65 m["modestr"] = fs.mode_as_string (); |
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66 m["nlink"] = (double) fs.nlink (); |
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67 m["uid"] = (double) fs.uid (); |
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68 m["gid"] = (double) fs.gid (); |
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69 #if defined (HAVE_ST_RDEV) |
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70 m["rdev"] = (double) fs.rdev (); |
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71 #endif |
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72 m["size"] = (double) fs.size (); |
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73 m["atime"] = (double) fs.atime (); |
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74 m["mtime"] = (double) fs.mtime (); |
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75 m["ctime"] = (double) fs.ctime (); |
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76 #if defined (HAVE_ST_BLKSIZE) |
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77 m["blksize"] = (double) fs.blksize (); |
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78 #endif |
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79 #if defined (HAVE_ST_BLOCKS) |
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80 m["blocks"] = (double) fs.blocks (); |
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81 #endif |
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82 |
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83 return m; |
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84 } |
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85 |
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86 DEFUN(dup2, args, , |
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87 "fid = dup2 (old, new): duplicate a file descriptor") |
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88 { |
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89 double retval = -1.0; |
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90 |
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91 #if defined (HAVE_DUP2) |
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92 int nargin = args.length (); |
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93 |
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94 if (nargin == 2) |
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95 { |
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96 double d_old = args(0).double_value (); |
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97 double d_new = args(1).double_value (); |
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98 |
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99 if (! error_state) |
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100 { |
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101 if (D_NINT (d_old) == d_old && D_NINT (d_new) == d_new) |
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102 { |
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103 int i_old = NINT (d_old); |
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104 int i_new = NINT (d_new); |
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105 |
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106 // XXX FIXME XXX -- are these checks sufficient? |
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107 if (i_old >= 0 && i_new >= 0) |
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108 retval = (double) dup2 (i_old, i_new); |
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109 else |
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110 error ("dup2: invalid file id"); |
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111 } |
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112 else |
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113 error ("dup2: arguments must be integer values"); |
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114 } |
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115 } |
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116 else |
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117 print_usage ("dup2"); |
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118 #else |
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119 gripe_not_supported ("dup2"); |
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120 #endif |
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121 |
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122 return retval; |
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123 } |
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124 |
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125 DEFUN(exec, args, , |
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126 "exec (file, args): replace current process with a new process") |
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127 { |
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128 double retval = -1.0; |
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129 |
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130 #if defined (HAVE_EXECVP) |
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131 int nargin = args.length (); |
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132 |
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133 if (nargin == 1 || nargin == 2) |
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134 { |
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135 string exec_file = args(0).string_value (); |
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136 |
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137 if (! error_state) |
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138 { |
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139 char **exec_args = 0; |
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140 |
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141 if (nargin == 2) |
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142 { |
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143 charMatrix chm = args(1).all_strings (); |
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144 |
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145 if (! error_state) |
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146 { |
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147 int nr = chm.rows (); |
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148 int nc = chm.cols (); |
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149 |
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150 exec_args = new char * [nr+2]; |
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151 |
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152 // XXX FIXME XXX -- potential leak? |
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153 |
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154 exec_args[0] = strsave (exec_file.c_str ()); |
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155 exec_args[nr+1] = 0; |
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156 |
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157 for (int i = 0; i < nr; i++) |
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158 { |
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159 exec_args[i+1] = new char [nc+1]; |
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160 |
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161 for (int j = 0; j < nc; j++) |
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162 exec_args[i+1][j] = chm (i, j); |
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163 |
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164 exec_args[i+1][nc] = '\0'; |
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165 } |
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166 } |
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167 else |
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168 error ("exec: arguments must be strings"); |
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169 } |
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170 else |
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171 { |
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172 exec_args = new char * [2]; |
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173 |
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174 exec_args[0] = strsave (exec_file.c_str ()); |
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175 exec_args[1] = 0; |
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176 } |
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177 |
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178 if (! error_state) |
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179 execvp (exec_file.c_str (), exec_args); |
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180 } |
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181 else |
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182 error ("exec: first argument must be a string"); |
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183 } |
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184 else |
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185 print_usage ("exec"); |
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186 #else |
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187 gripe_not_supported ("exec"); |
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188 #endif |
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189 |
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190 return retval; |
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191 } |
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192 |
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193 DEFUN(fcntl, args, , |
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194 "fcntl (fid, request, argument): control open file descriptors") |
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195 { |
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196 double retval = -1.0; |
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197 |
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198 #if defined (HAVE_FCNTL) |
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199 int nargin = args.length (); |
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200 |
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201 if (nargin == 3) |
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202 { |
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203 double d_fid = args(0).double_value (); |
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204 double d_req = args(1).double_value (); |
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205 double d_arg = args(2).double_value (); |
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206 |
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207 if (! error_state |
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208 && D_NINT (d_fid) == d_fid |
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209 && D_NINT (d_req) == d_req |
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210 && D_NINT (d_arg) == d_arg) |
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211 { |
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212 int fid = NINT (d_fid); |
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213 int req = NINT (d_req); |
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214 int arg = NINT (d_arg); |
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215 |
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216 // XXX FIXME XXX -- Need better checking here? |
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217 if (fid < 0) |
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218 error ("fcntl: invalid file id"); |
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219 else |
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220 retval = fcntl (fid, req, arg); |
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221 } |
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222 else |
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223 error ("fcntl: file id must be an integer"); |
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224 } |
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225 else |
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226 print_usage ("fcntl"); |
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227 #else |
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228 gripe_not_supported ("fcntl"); |
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229 #endif |
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230 |
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231 return retval; |
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232 } |
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233 |
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234 DEFUN(fork, args, , |
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235 "fork (): create a copy of the current process") |
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236 { |
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237 double retval = -1.0; |
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238 |
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239 #if defined (HAVE_FORK) |
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240 int nargin = args.length (); |
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241 |
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242 if (nargin == 0) |
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243 retval = fork (); |
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244 else |
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245 print_usage ("fork"); |
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246 #else |
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247 gripe_not_supported ("fork"); |
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248 #endif |
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249 |
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250 return retval; |
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251 } |
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252 |
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253 DEFUN(getpgrp, args, , |
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254 "pgid = getpgrp (): return the process group id of the current process") |
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255 { |
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256 double retval = -1.0; |
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257 |
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258 #if defined (HAVE_GETPGRP) |
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259 int nargin = args.length (); |
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260 |
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261 if (nargin == 0) |
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262 retval = getpgrp (); |
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263 else |
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264 print_usage ("getpgrp"); |
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265 #else |
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266 gripe_not_supported ("getpgrp"); |
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267 #endif |
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268 |
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269 return retval; |
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270 } |
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271 |
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272 DEFUN(getpid, args, , |
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273 "pid = getpid (): return the process id of the current process") |
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274 { |
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275 double retval = -1.0; |
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276 |
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277 #if defined (HAVE_GETPID) |
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278 int nargin = args.length (); |
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279 |
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280 if (nargin == 0) |
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281 retval = getpid (); |
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282 else |
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283 print_usage ("getpid"); |
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284 #else |
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285 gripe_not_supported ("getpid"); |
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286 #endif |
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287 |
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288 return retval; |
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289 } |
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290 |
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291 DEFUN(getppid, args, , |
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292 "pid = getppid (): return the process id of the parent process") |
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293 { |
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294 double retval = -1.0; |
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295 |
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296 #if defined (HAVE_GETPPID) |
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297 int nargin = args.length (); |
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298 |
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299 if (nargin == 0) |
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300 retval = getppid (); |
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301 else |
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302 print_usage ("getppid"); |
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303 #else |
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304 gripe_not_supported ("getppid"); |
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305 #endif |
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306 |
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307 return retval; |
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308 } |
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309 |
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310 DEFUN (lstat, args, , |
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311 "[S, ERR, MSG] = lstat (NAME)\n\ |
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312 \n\ |
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313 Like [S, ERR, MSG] = stat (NAME), but if NAME refers to a symbolic\n\ |
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314 link, returns information about the link itself, not the file that it\n\ |
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315 points to.") |
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316 { |
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317 octave_value_list retval; |
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318 |
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319 if (args.length () == 1) |
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320 { |
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321 string fname = oct_tilde_expand (args(0).string_value ()); |
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322 |
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323 if (! error_state) |
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324 { |
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325 file_stat fs (fname, false); |
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326 |
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327 if (fs) |
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328 { |
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329 retval(2) = string (); |
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330 retval(1) = 0.0; |
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331 retval(0) = octave_value (mk_stat_map (fs)); |
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332 } |
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333 else |
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334 { |
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335 retval(2) = fs.error (); |
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336 retval(1) = -1.0; |
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337 retval(0) = Matrix (); |
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338 } |
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339 } |
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340 } |
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341 else |
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342 print_usage ("lstat"); |
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343 |
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344 return retval; |
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345 } |
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346 |
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347 DEFUN (mkfifo, args, , |
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348 "STATUS = mkfifo (NAME, MODE)\n\ |
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349 \n\ |
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350 Create a FIFO special file named NAME with file mode MODE\n\ |
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351 \n\ |
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352 STATUS is:\n\ |
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353 \n\ |
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354 != 0 : if mkfifo failed\n\ |
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355 0 : if the FIFO special file could be created") |
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356 { |
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357 double retval = -1.0; |
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358 |
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359 int nargin = args.length (); |
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360 |
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361 if (nargin == 2) |
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362 { |
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363 if (args(0).is_string ()) |
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364 { |
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365 string name = args(0).string_value (); |
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366 |
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367 if (args(1).is_scalar_type ()) |
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368 { |
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369 long mode = (long) args(1).double_value (); |
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370 |
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371 retval = oct_mkfifo (name, mode); |
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372 } |
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373 else |
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374 error ("mkfifo: MODE must be an integer"); |
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375 } |
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376 else |
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377 error ("mkfifo: file name must be a string"); |
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378 |
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379 } |
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380 else |
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381 print_usage ("mkfifo"); |
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382 |
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383 return retval; |
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384 } |
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385 |
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386 DEFUN (pipe, args, , |
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387 "[file_ids, status] = pipe (): create an interprocess channel") |
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388 { |
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389 octave_value_list retval (2, octave_value (-1.0)); |
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390 |
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391 #if defined (HAVE_PIPE) |
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392 int nargin = args.length (); |
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393 |
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394 if (nargin == 0) |
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395 { |
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396 int fid[2]; |
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397 |
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398 if (pipe (fid) >= 0) |
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399 { |
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400 FILE *in_file = fdopen (fid[0], "r"); |
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401 FILE *out_file = fdopen (fid[1], "w"); |
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402 |
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403 octave_istdiostream *is |
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404 = new octave_istdiostream (string (), in_file); |
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405 |
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406 octave_ostdiostream *os |
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407 = new octave_ostdiostream (string (), out_file); |
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408 |
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409 Matrix file_ids (1, 2); |
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410 |
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411 file_ids (0, 0) = octave_stream_list::insert (is); |
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412 file_ids (0, 1) = octave_stream_list::insert (os); |
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413 |
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414 retval(0) = file_ids; |
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415 retval(1) = 0.0; |
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416 } |
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417 } |
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418 else |
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419 print_usage ("pipe"); |
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420 #else |
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421 gripe_not_supported ("pipe"); |
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422 #endif |
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423 |
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424 return retval; |
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425 } |
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426 |
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427 DEFUN (stat, args, , |
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428 "[S, ERR, MSG] = stat (NAME)\n\ |
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429 \n\ |
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430 Given the name of a file, return a structure S with the following |
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431 elements:\n\ |
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432 \n\ |
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433 dev : id of device containing a directory entry for this file\n\ |
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434 ino : file number of the file\n\ |
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435 modestr : file mode, as a string of ten letters or dashes as in ls -l\n\ |
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436 nlink : number of links\n\ |
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437 uid : user id of file's owner\n\ |
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438 gid : group id of file's group \n\ |
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439 rdev : id of device for block or character special files\n\ |
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440 size : size in bytes\n\ |
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441 atime : time of last access\n\ |
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442 mtime : time of last modification\n\ |
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443 ctime : time of last file status change\n\ |
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444 blksize : size of blocks in the file\n\ |
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445 blocks : number of blocks allocated for file\n\ |
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446 \n\ |
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447 If the call is successful, ERR is 0 and MSG is an empty string.\n\ |
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448 \n\ |
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449 If the file does not exist, or some other error occurs, S is an\n\ |
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450 empty matrix, ERR is -1, and MSG contains the corresponding\n\ |
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451 system error message.") |
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452 { |
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453 octave_value_list retval; |
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454 |
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455 if (args.length () == 1) |
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456 { |
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457 string fname = oct_tilde_expand (args(0).string_value ()); |
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458 |
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459 if (! error_state) |
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460 { |
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461 file_stat fs (fname); |
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462 |
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463 if (fs) |
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464 { |
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465 retval(2) = string (); |
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466 retval(1) = 0.0; |
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467 retval(0) = octave_value (mk_stat_map (fs)); |
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468 } |
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469 else |
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470 { |
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471 retval(2) = fs.error (); |
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472 retval(1) = -1.0; |
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473 retval(0) = Matrix (); |
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474 } |
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475 } |
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476 } |
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477 else |
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478 print_usage ("stat"); |
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479 |
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480 return retval; |
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481 } |
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482 |
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483 DEFUN (unlink, args, , |
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484 "STATUS = unlink (NAME)\n\ |
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485 \n\ |
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486 Delete the file NAME\n\ |
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487 \n\ |
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488 STATUS is:\n\ |
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489 \n\ |
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490 != 0 : if unlink failed\n\ |
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491 0 : if the file could be successfully deleted") |
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492 { |
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493 double retval = -1.0; |
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494 |
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495 int nargin = args.length (); |
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496 |
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497 if (nargin == 1) |
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498 { |
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499 if (args(0).is_string ()) |
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500 { |
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501 string name = args(0).string_value (); |
|
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502 |
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503 retval = oct_unlink (name); |
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504 } |
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505 else |
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506 error ("unlink: file name must be a string"); |
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507 } |
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508 else |
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509 print_usage ("unlink"); |
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510 |
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511 return retval; |
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512 } |
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513 |
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514 DEFUN (waitpid, args, , |
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515 "STATUS = waitpid (PID, OPTIONS)\n\ |
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516 \n\ |
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517 wait for process PID to terminate\n\ |
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518 \n\ |
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519 PID can be:\n\ |
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520 \n\ |
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521 -1 : wait for any child process\n\ |
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522 0 : wait for any child process whose process group ID is equal to\n\ |
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523 that of the Octave interpreter process.\n\ |
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524 > 0 : wait for termination of the child process with ID PID.\n\ |
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525 \n\ |
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526 OPTIONS is:\n\ |
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527 \n\ |
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|
528 0 : wait until signal is received or a child process exits (this\n\ |
|
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529 is the default if the OPTIONS argument is missing) \n\ |
|
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530 1 : do not hang if status is not immediately available\n\ |
|
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531 2 : report the status of any child processes that are\n\ |
|
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532 stopped, and whose status has not yet been reported\n\ |
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533 since they stopped\n\ |
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534 3 : implies both 1 and 2\n\ |
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535 \n\ |
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536 STATUS is:\n\ |
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537 \n\ |
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538 -1 : if an error occured\n\ |
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539 > 0 : the process ID of the child process that exited") |
|
|
540 { |
|
|
541 double retval = -1.0; |
|
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542 |
|
|
543 #if defined (HAVE_WAITPID) |
|
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544 int nargin = args.length (); |
|
|
545 |
|
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546 if (nargin == 1 || nargin == 2) |
|
|
547 { |
|
|
548 double pid_num = args(0).double_value (); |
|
|
549 |
|
|
550 if (! error_state) |
|
|
551 { |
|
|
552 if (D_NINT (pid_num) != pid_num) |
|
|
553 error ("waitpid: PID must be an integer value"); |
|
|
554 else |
|
|
555 { |
|
|
556 pid_t pid = (pid_t) pid_num; |
|
|
557 |
|
|
558 int options = 0; |
|
|
559 |
|
|
560 if (args.length () == 2) |
|
|
561 { |
|
|
562 double options_num = args(1).double_value (); |
|
|
563 |
|
|
564 if (! error_state) |
|
|
565 { |
|
|
566 if (D_NINT (options_num) != options_num) |
|
|
567 error ("waitpid: PID must be an integer value"); |
|
|
568 else |
|
|
569 { |
|
|
570 options = NINT (options_num); |
|
|
571 if (options < 0 || options > 3) |
|
|
572 error ("waitpid: invalid OPTIONS value specified"); |
|
|
573 } |
|
|
574 } |
|
|
575 } |
|
|
576 |
|
|
577 if (! error_state) |
|
|
578 retval = waitpid (pid, 0, options); |
|
|
579 } |
|
|
580 } |
|
|
581 } |
|
|
582 else |
|
|
583 print_usage ("waitpid"); |
|
|
584 #else |
|
|
585 gripe_not_supported ("waitpid"); |
|
|
586 #endif |
|
|
587 |
|
|
588 return retval; |
|
|
589 } |
|
|
590 |
|
|
591 #if !defined (O_NONBLOCK) && defined (O_NDELAY) |
|
|
592 #define O_NONBLOCK O_NDELAY |
|
|
593 #endif |
|
|
594 |
|
|
595 void |
|
|
596 symbols_of_syscalls (void) |
|
|
597 { |
|
|
598 #if defined (F_DUPFD) |
|
|
599 DEFCONST (F_DUPFD, (double) F_DUPFD, 0, 0, |
|
|
600 ""); |
|
|
601 #endif |
|
|
602 |
|
|
603 #if defined (F_GETFD) |
|
|
604 DEFCONST (F_GETFD, (double) F_GETFD, 0, 0, |
|
|
605 ""); |
|
|
606 #endif |
|
|
607 |
|
|
608 #if defined (F_GETFL) |
|
|
609 DEFCONST (F_GETFL, (double) F_GETFL, 0, 0, |
|
|
610 ""); |
|
|
611 #endif |
|
|
612 |
|
|
613 #if defined (F_SETFD) |
|
|
614 DEFCONST (F_SETFD, (double) F_SETFD, 0, 0, |
|
|
615 ""); |
|
|
616 #endif |
|
|
617 |
|
|
618 #if defined (F_SETFL) |
|
|
619 DEFCONST (F_SETFL, (double) F_SETFL, 0, 0, |
|
|
620 ""); |
|
|
621 #endif |
|
|
622 |
|
|
623 #if defined (O_APPEND) |
|
|
624 DEFCONST (O_APPEND, (double) O_APPEND, 0, 0, |
|
|
625 ""); |
|
|
626 #endif |
|
|
627 |
|
|
628 #if defined (O_CREAT) |
|
|
629 DEFCONST (O_CREAT, (double) O_CREAT, 0, 0, |
|
|
630 ""); |
|
|
631 #endif |
|
|
632 |
|
|
633 #if defined (O_EXCL) |
|
|
634 DEFCONST (O_EXCL, (double) O_EXCL, 0, 0, |
|
|
635 ""); |
|
|
636 #endif |
|
|
637 |
|
|
638 #if defined (O_NONBLOCK) |
|
|
639 DEFCONST (O_NONBLOCK, (double) O_NONBLOCK, 0, 0, |
|
|
640 ""); |
|
|
641 #endif |
|
|
642 |
|
|
643 #if defined (O_RDONLY) |
|
|
644 DEFCONST (O_RDONLY, (double) O_RDONLY, 0, 0, |
|
|
645 ""); |
|
|
646 #endif |
|
|
647 |
|
|
648 #if defined (O_RDWR) |
|
|
649 DEFCONST (O_RDWR, (double) O_RDWR, 0, 0, |
|
|
650 ""); |
|
|
651 #endif |
|
|
652 |
|
|
653 #if defined (O_TRUNC) |
|
|
654 DEFCONST (O_TRUNC, (double) O_TRUNC, 0, 0, |
|
|
655 ""); |
|
|
656 #endif |
|
|
657 |
|
|
658 #if defined (O_WRONLY) |
|
|
659 DEFCONST (O_WRONLY, (double) O_WRONLY, 0, 0, |
|
|
660 ""); |
|
|
661 #endif |
|
|
662 } |
|
|
663 |
|
|
664 /* |
|
|
665 ;;; Local Variables: *** |
|
|
666 ;;; mode: C++ *** |
|
|
667 ;;; End: *** |
|
|
668 */ |
