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