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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 <cerrno> |
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33 #include <cstdio> |
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34 #include <cstring> |
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35 |
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36 #ifdef HAVE_UNISTD_H |
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37 #ifdef HAVE_SYS_TYPES_H |
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38 #include <sys/types.h> |
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39 #endif |
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40 #include <unistd.h> |
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41 #endif |
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42 |
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43 #ifdef HAVE_FCNTL_H |
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44 #include <fcntl.h> |
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45 #endif |
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46 |
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47 #include "file-ops.h" |
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48 #include "file-stat.h" |
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49 #include "oct-syscalls.h" |
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50 |
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51 #include "defun.h" |
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52 #include "error.h" |
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53 #include "gripes.h" |
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54 #include "lo-utils.h" |
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55 #include "oct-map.h" |
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56 #include "oct-obj.h" |
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57 #include "oct-stdstrm.h" |
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58 #include "oct-stream.h" |
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59 #include "sysdep.h" |
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60 #include "syswait.h" |
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61 #include "utils.h" |
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62 #include "variables.h" |
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63 |
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64 static Octave_map |
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65 mk_stat_map (const file_stat& fs) |
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66 { |
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67 Octave_map m; |
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68 |
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69 m["dev"] = static_cast<double> (fs.dev ()); |
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70 m["ino"] = static_cast<double> (fs.ino ()); |
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71 m["modestr"] = fs.mode_as_string (); |
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72 m["nlink"] = static_cast<double> (fs.nlink ()); |
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73 m["uid"] = static_cast<double> (fs.uid ()); |
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74 m["gid"] = static_cast<double> (fs.gid ()); |
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75 #if defined (HAVE_ST_RDEV) |
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76 m["rdev"] = static_cast<double> (fs.rdev ()); |
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77 #endif |
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78 m["size"] = static_cast<double> (fs.size ()); |
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79 m["atime"] = static_cast<double> (fs.atime ()); |
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80 m["mtime"] = static_cast<double> (fs.mtime ()); |
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81 m["ctime"] = static_cast<double> (fs.ctime ()); |
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82 #if defined (HAVE_ST_BLKSIZE) |
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83 m["blksize"] = static_cast<double> (fs.blksize ()); |
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84 #endif |
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85 #if defined (HAVE_ST_BLOCKS) |
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86 m["blocks"] = static_cast<double> (fs.blocks ()); |
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87 #endif |
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88 |
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89 return m; |
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90 } |
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91 |
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92 DEFUN (dup2, args, , |
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93 "-*- texinfo -*-\n\ |
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94 @deftypefn {Built-in Function} {[@var{fid}, @var{msg}] =} dup2 (@var{old}, @var{new})\n\ |
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95 Duplicate a file descriptor.\n\ |
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96 \n\ |
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97 If successful, @var{fid} is greater than zero and contains the new file\n\ |
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98 ID. Otherwise, @var{fid} is negative and @var{msg} contains a\n\ |
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99 system-dependent error message.\n\ |
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100 @end deftypefn") |
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101 { |
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102 octave_value_list retval; |
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103 |
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104 retval(1) = string (); |
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105 retval(0) = -1.0; |
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106 |
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107 int nargin = args.length (); |
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108 |
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109 if (nargin == 2) |
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110 { |
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111 octave_stream old_stream |
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112 = octave_stream_list::lookup (args(0), "dup2"); |
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113 |
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114 if (! error_state) |
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115 { |
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116 octave_stream new_stream |
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117 = octave_stream_list::lookup (args(1), "dup2"); |
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118 |
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119 if (! error_state) |
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120 { |
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121 int i_old = old_stream.file_number (); |
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122 int i_new = new_stream.file_number (); |
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123 |
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124 if (i_old >= 0 && i_new >= 0) |
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125 { |
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126 string msg; |
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127 |
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128 int status = octave_syscalls::dup2 (i_old, i_new, msg); |
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129 |
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130 retval(0) = static_cast<double> (status); |
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131 retval(1) = msg; |
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132 } |
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133 } |
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134 } |
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135 else |
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136 error ("dup2: invalid stream"); |
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137 } |
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138 else |
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139 print_usage ("dup2"); |
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140 |
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141 return retval; |
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142 } |
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143 |
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144 DEFUN (exec, args, , |
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145 "-*- texinfo -*-\n\ |
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146 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} exec (@var{file}, @var{args})\n\ |
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147 Replace current process with a new process. Calling @code{exec} without\n\ |
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148 first calling @code{fork} will terminate your current Octave process and\n\ |
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149 replace it with the program named by @var{file}. For example,\n\ |
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150 \n\ |
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151 @example\n\ |
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152 exec (\"ls\" \"-l\")\n\ |
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153 @end example\n\ |
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154 \n\ |
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155 @noindent\n\ |
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156 will run @code{ls} and return you to your shell prompt.\n\ |
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157 \n\ |
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158 If successful, @code{exec} does not return. If @code{exec} does return,\n\ |
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159 @var{err} will be nonzero, and @var{msg} will contain a system-dependent\n\ |
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160 error message.\n\ |
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161 @end deftypefn") |
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162 { |
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163 octave_value_list retval; |
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164 |
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165 retval(1) = string (); |
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166 retval(0) = -1.0; |
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167 |
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168 int nargin = args.length (); |
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169 |
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170 if (nargin == 1 || nargin == 2) |
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171 { |
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172 string exec_file = args(0).string_value (); |
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173 |
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174 if (! error_state) |
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175 { |
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176 string_vector exec_args; |
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177 |
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178 if (nargin == 2) |
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179 { |
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180 string_vector tmp = args(1).all_strings (); |
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181 |
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182 if (! error_state) |
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183 { |
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184 int len = tmp.length (); |
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185 |
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186 exec_args.resize (len + 1); |
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187 |
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188 exec_args[0] = exec_file; |
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189 |
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190 for (int i = 0; i < len; i++) |
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191 exec_args[i+1] = tmp[i]; |
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192 } |
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193 else |
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194 error ("exec: arguments must be strings"); |
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195 } |
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196 else |
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197 { |
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198 exec_args.resize (1); |
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199 |
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200 exec_args[0] = exec_file; |
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201 } |
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202 |
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203 if (! error_state) |
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204 { |
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205 string msg; |
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206 |
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207 int status = octave_syscalls::execvp (exec_file, exec_args, msg); |
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208 |
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209 retval(0) = static_cast<double> (status); |
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210 retval(1) = msg; |
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211 } |
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212 } |
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213 else |
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214 error ("exec: first argument must be a string"); |
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215 } |
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216 else |
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217 print_usage ("exec"); |
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218 |
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219 return retval; |
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220 } |
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221 |
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222 DEFUN (fcntl, args, , |
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223 "-*- texinfo -*-\n\ |
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224 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} fcntl (@var{fid}, @var{request}, @var{arg})\n\ |
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225 Change the properties of the open file @var{fid}. The following values\n\ |
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226 may be passed as @var{request}:\n\ |
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227 \n\ |
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228 @vtable @code\n\ |
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229 @item F_DUPFD\n\ |
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230 Return a duplicate file descriptor.\n\ |
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231 \n\ |
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232 @item F_GETFD\n\ |
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233 Return the file descriptor flags for @var{fid}.\n\ |
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234 \n\ |
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235 @item F_SETFD\n\ |
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236 Set the file descriptor flags for @var{fid}.\n\ |
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237 \n\ |
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238 @item F_GETFL\n\ |
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239 Return the file status flags for @var{fid}. The following codes may be\n\ |
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240 returned (some of the flags may be undefined on some systems).\n\ |
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241 \n\ |
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242 @vtable @code\n\ |
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243 @item O_RDONLY\n\ |
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244 Open for reading only.\n\ |
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245 \n\ |
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246 @item O_WRONLY\n\ |
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247 Open for writing only.\n\ |
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248 \n\ |
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249 @item O_RDWR\n\ |
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250 Open for reading and writing.\n\ |
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251 \n\ |
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252 @item O_APPEND\n\ |
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253 Append on each write.\n\ |
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254 \n\ |
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255 @item O_NONBLOCK\n\ |
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256 Nonblocking mode.\n\ |
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257 \n\ |
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258 @item O_SYNC\n\ |
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259 Wait for writes to complete.\n\ |
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260 \n\ |
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261 @item O_ASYNC\n\ |
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262 Asynchronous I/O.\n\ |
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263 @end vtable\n\ |
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264 \n\ |
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265 @item F_SETFL\n\ |
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266 Set the file status flags for @var{fid} to the value specified by\n\ |
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267 @var{arg}. The only flags that can be changed are @code{O_APPEND} and\n\ |
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268 @code{O_NONBLOCK}.\n\ |
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269 @end vtable\n\ |
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270 \n\ |
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271 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
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272 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
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273 system-dependent error message.\n\ |
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274 @end deftypefn") |
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275 { |
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276 octave_value_list retval; |
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277 |
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278 retval(1) = string (); |
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279 retval(0) = -1.0; |
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280 |
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281 int nargin = args.length (); |
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282 |
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283 if (nargin == 3) |
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284 { |
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285 int fid = args(0).int_value (true); |
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286 int req = args(1).int_value (true); |
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287 int arg = args(2).int_value (true); |
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288 |
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289 if (! error_state) |
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290 { |
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291 // XXX FIXME XXX -- Need better checking here? |
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292 if (fid < 0) |
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293 error ("fcntl: invalid file id"); |
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294 else |
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295 { |
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296 string msg; |
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297 |
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298 int status = octave_syscalls::fcntl (fid, req, arg, msg); |
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299 |
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300 retval(0) = static_cast<double> (status); |
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301 retval(1) = msg; |
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302 } |
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303 } |
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304 else |
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305 error ("fcntl: file id, request, and argument must be integers"); |
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306 } |
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307 else |
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308 print_usage ("fcntl"); |
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309 |
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310 return retval; |
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311 } |
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312 |
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313 DEFUN (fork, args, , |
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314 "-*- texinfo -*-\n\ |
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315 @deftypefn {Built-in Function} {[@var{pid}, @var{msg}] =} fork ()\n\ |
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316 Create a copy of the current process.\n\ |
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317 \n\ |
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318 Fork can return one of the following values:\n\ |
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319 \n\ |
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320 @table @asis\n\ |
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321 @item > 0\n\ |
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322 You are in the parent process. The value returned from @code{fork} is\n\ |
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323 the process id of the child process. You should probably arrange to\n\ |
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324 wait for any child processes to exit.\n\ |
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325 \n\ |
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326 @item 0\n\ |
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327 You are in the child process. You can call @code{exec} to start another\n\ |
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328 process. If that fails, you should probably call @code{exit}.\n\ |
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329 \n\ |
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330 @item < 0\n\ |
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331 The call to @code{fork} failed for some reason. You must take evasive\n\ |
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332 action. A system dependent error message will be waiting in @var{msg}.\n\ |
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333 @end table\n\ |
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334 @end deftypefn") |
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335 { |
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336 octave_value_list retval; |
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337 |
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338 retval(1) = string (); |
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339 retval(0) = -1.0; |
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340 |
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341 int nargin = args.length (); |
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342 |
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343 if (nargin == 0) |
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344 { |
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345 string msg; |
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346 |
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347 pid_t pid = octave_syscalls::fork (msg); |
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348 |
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349 retval(0) = static_cast<double> (pid); |
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350 retval(1) = msg; |
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351 } |
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352 else |
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353 print_usage ("fork"); |
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354 |
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355 return retval; |
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356 } |
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357 |
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358 DEFUN (getpgrp, args, , |
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359 "-*- texinfo -*-\n\ |
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360 @deftypefn {Built-in Function} {pgid =} getpgrp ()\n\ |
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361 Return the process group id of the current process.\n\ |
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362 @end deftypefn") |
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363 { |
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364 octave_value_list retval; |
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365 |
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366 retval(1) = string (); |
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367 retval(0) = -1.0; |
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368 |
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369 int nargin = args.length (); |
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370 |
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371 if (nargin == 0) |
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372 { |
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373 string msg; |
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374 |
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375 retval(0) = static_cast<double> (octave_syscalls::getpgrp (msg)); |
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376 retval(1) = msg; |
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377 } |
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378 else |
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379 print_usage ("getpgrp"); |
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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 (getpid, args, , |
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385 "-*- texinfo -*-\n\ |
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386 @deftypefn {Built-in Function} {pid =} getpid ()\n\ |
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387 Return the process id of the current process.\n\ |
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388 @end deftypefn") |
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389 { |
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390 double retval = -1.0; |
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391 |
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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 retval = octave_syscalls::getpid (); |
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396 else |
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397 print_usage ("getpid"); |
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398 |
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399 return retval; |
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400 } |
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401 |
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402 DEFUN (getppid, args, , |
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403 "-*- texinfo -*-\n\ |
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404 @deftypefn {Built-in Function} {pid =} getppid ()\n\ |
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405 Return the process id of the parent process.\n\ |
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406 @end deftypefn") |
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407 { |
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408 double retval = -1.0; |
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409 |
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410 int nargin = args.length (); |
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411 |
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412 if (nargin == 0) |
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413 retval = octave_syscalls::getppid (); |
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414 else |
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415 print_usage ("getppid"); |
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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 (getegid, args, , |
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421 "-*- texinfo -*-\n\ |
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422 @deftypefn {Built-in Function} {egid =} getegid ()\n\ |
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423 Return the effective group id of the current process.\n\ |
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424 @end deftypefn") |
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425 { |
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426 double retval = -1.0; |
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427 |
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428 int nargin = args.length (); |
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429 |
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430 if (nargin == 0) |
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431 retval = octave_syscalls::getegid (); |
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432 else |
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433 print_usage ("getegid"); |
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434 |
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435 return retval; |
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436 } |
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437 |
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438 DEFUN (getgid, args, , |
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439 "-*- texinfo -*-\n\ |
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440 @deftypefn {Built-in Function} {gid =} getgid ()\n\ |
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441 Return the real group id of the current process.\n\ |
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442 @end deftypefn") |
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443 { |
|
|
444 double retval = -1.0; |
|
|
445 |
|
|
446 int nargin = args.length (); |
|
|
447 |
|
|
448 if (nargin == 0) |
|
2937
|
449 retval = octave_syscalls::getgid (); |
|
2475
|
450 else |
|
|
451 print_usage ("getgid"); |
|
2075
|
452 |
|
|
453 return retval; |
|
|
454 } |
|
|
455 |
|
2473
|
456 DEFUN (geteuid, args, , |
|
3301
|
457 "-*- texinfo -*-\n\ |
|
|
458 @deftypefn {Built-in Function} {euid =} geteuid ()\n\ |
|
|
459 Return the effective user id of the current process.\n\ |
|
|
460 @end deftypefn") |
|
2472
|
461 { |
|
|
462 double retval = -1.0; |
|
|
463 |
|
|
464 int nargin = args.length (); |
|
|
465 |
|
|
466 if (nargin == 0) |
|
2937
|
467 retval = octave_syscalls::geteuid (); |
|
2472
|
468 else |
|
|
469 print_usage ("geteuid"); |
|
2473
|
470 |
|
|
471 return retval; |
|
2472
|
472 } |
|
|
473 |
|
2473
|
474 DEFUN (getuid, args, , |
|
3301
|
475 "-*- texinfo -*-\n\ |
|
|
476 @deftypefn {Built-in Function} {uid =} getuid ()\n\ |
|
|
477 Return the real user id of the current process.\n\ |
|
|
478 @end deftypefn") |
|
2472
|
479 { |
|
|
480 double retval = -1.0; |
|
|
481 |
|
|
482 int nargin = args.length (); |
|
|
483 |
|
|
484 if (nargin == 0) |
|
2937
|
485 retval = octave_syscalls::getuid (); |
|
2472
|
486 else |
|
|
487 print_usage ("getuid"); |
|
2473
|
488 |
|
|
489 return retval; |
|
2472
|
490 } |
|
|
491 |
|
2075
|
492 DEFUN (lstat, args, , |
|
3301
|
493 "See stat.") |
|
2075
|
494 { |
|
2263
|
495 octave_value_list retval; |
|
2075
|
496 |
|
|
497 if (args.length () == 1) |
|
|
498 { |
|
2926
|
499 string fname = file_ops::tilde_expand (args(0).string_value ()); |
|
2075
|
500 |
|
|
501 if (! error_state) |
|
|
502 { |
|
|
503 file_stat fs (fname, false); |
|
|
504 |
|
2263
|
505 if (fs) |
|
2262
|
506 { |
|
|
507 retval(2) = string (); |
|
|
508 retval(1) = 0.0; |
|
|
509 retval(0) = octave_value (mk_stat_map (fs)); |
|
|
510 } |
|
|
511 else |
|
|
512 { |
|
|
513 retval(2) = fs.error (); |
|
|
514 retval(1) = -1.0; |
|
|
515 retval(0) = Matrix (); |
|
|
516 } |
|
2075
|
517 } |
|
|
518 } |
|
|
519 else |
|
|
520 print_usage ("lstat"); |
|
|
521 |
|
|
522 return retval; |
|
|
523 } |
|
|
524 |
|
3301
|
525 |
|
|
526 |
|
2075
|
527 DEFUN (mkfifo, args, , |
|
3301
|
528 "@deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} mkfifo (@var{name})\n\ |
|
|
529 Create a @var{fifo} special file named @var{name} with file mode @var{mode}\n\\n\ |
|
2075
|
530 \n\ |
|
3301
|
531 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
532 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
533 system-dependent error message.\n\ |
|
|
534 @end deftypefn") |
|
2075
|
535 { |
|
2669
|
536 octave_value_list retval; |
|
|
537 |
|
|
538 retval(1) = string (); |
|
|
539 retval(0) = -1.0; |
|
2075
|
540 |
|
|
541 int nargin = args.length (); |
|
|
542 |
|
|
543 if (nargin == 2) |
|
|
544 { |
|
|
545 if (args(0).is_string ()) |
|
|
546 { |
|
|
547 string name = args(0).string_value (); |
|
|
548 |
|
|
549 if (args(1).is_scalar_type ()) |
|
|
550 { |
|
2800
|
551 long mode = static_cast<long> (args(1).double_value ()); |
|
2075
|
552 |
|
2669
|
553 string msg; |
|
|
554 |
|
2926
|
555 int status = file_ops::mkfifo (name, mode, msg); |
|
2669
|
556 |
|
2800
|
557 retval(0) = static_cast<double> (status); |
|
2669
|
558 |
|
|
559 if (status < 0) |
|
|
560 retval(1) = msg; |
|
2075
|
561 } |
|
|
562 else |
|
|
563 error ("mkfifo: MODE must be an integer"); |
|
|
564 } |
|
|
565 else |
|
|
566 error ("mkfifo: file name must be a string"); |
|
|
567 } |
|
|
568 else |
|
|
569 print_usage ("mkfifo"); |
|
|
570 |
|
|
571 return retval; |
|
|
572 } |
|
|
573 |
|
|
574 DEFUN (pipe, args, , |
|
3301
|
575 "-*- texinfo -*-\n\ |
|
|
576 @deftypefn {Built-in Function} {[@var{file_ids}, @var{err}, @var{msg}] =} pipe ()\n\ |
|
|
577 Create a pipe and return the vector @var{file_ids}, which corresponding\n\ |
|
|
578 to the reading and writing ends of the pipe.\n\ |
|
2669
|
579 \n\ |
|
3301
|
580 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
581 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
582 system-dependent error message.\n\ |
|
|
583 @end deftypefn") |
|
2075
|
584 { |
|
2669
|
585 octave_value_list retval; |
|
|
586 |
|
|
587 retval(2) = string (); |
|
|
588 retval(1) = -1.0; |
|
|
589 retval(0) = Matrix (); |
|
2075
|
590 |
|
|
591 int nargin = args.length (); |
|
|
592 |
|
|
593 if (nargin == 0) |
|
|
594 { |
|
|
595 int fid[2]; |
|
|
596 |
|
2937
|
597 string msg; |
|
|
598 |
|
|
599 int status = octave_syscalls::pipe (fid, msg); |
|
2669
|
600 |
|
|
601 if (status < 0) |
|
2937
|
602 retval(2) = msg; |
|
2669
|
603 else |
|
2075
|
604 { |
|
3340
|
605 FILE *ifile = fdopen (fid[0], "r"); |
|
|
606 FILE *ofile = fdopen (fid[1], "w"); |
|
2075
|
607 |
|
3340
|
608 octave_stream is = octave_istdiostream::create (string (), ifile); |
|
|
609 octave_stream os = octave_ostdiostream::create (string (), ofile); |
|
2075
|
610 |
|
2902
|
611 octave_value_list file_ids; |
|
2075
|
612 |
|
2902
|
613 file_ids(1) = octave_stream_list::insert (os); |
|
|
614 file_ids(0) = octave_stream_list::insert (is); |
|
2075
|
615 |
|
2800
|
616 retval(1) = static_cast<double> (status); |
|
2902
|
617 retval(0) = octave_value (file_ids); |
|
2669
|
618 } |
|
2075
|
619 } |
|
|
620 else |
|
|
621 print_usage ("pipe"); |
|
|
622 |
|
|
623 return retval; |
|
|
624 } |
|
|
625 |
|
|
626 DEFUN (stat, args, , |
|
3301
|
627 "-*- texinfo -*-\n\ |
|
|
628 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} stat (@var{file})\n\ |
|
|
629 @deftypefnx {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} lstat (@var{file})\n\ |
|
|
630 Return a structure @var{s} containing the following information about\n\ |
|
|
631 @var{file}.\n\ |
|
|
632 \n\ |
|
|
633 @table @code\n\ |
|
|
634 @item dev\n\ |
|
|
635 ID of device containing a directory entry for this file.\n\ |
|
|
636 \n\ |
|
|
637 @item ino\n\ |
|
|
638 File number of the file.\n\ |
|
|
639 \n\ |
|
|
640 @item modestr\n\ |
|
|
641 File mode, as a string of ten letters or dashes as would be returned by\n\ |
|
|
642 @kbd{ls -l}.\n\ |
|
|
643 \n\ |
|
|
644 @item nlink\n\ |
|
|
645 Number of links.\n\ |
|
2075
|
646 \n\ |
|
3301
|
647 @item uid\n\ |
|
|
648 User ID of file's owner.\n\ |
|
|
649 \n\ |
|
|
650 @item gid\n\ |
|
|
651 Group ID of file's group.\n\ |
|
|
652 \n\ |
|
|
653 @item rdev\n\ |
|
|
654 ID of device for block or character special files.\n\ |
|
|
655 \n\ |
|
|
656 @item size\n\ |
|
|
657 Size in bytes.\n\ |
|
|
658 \n\ |
|
|
659 @item atime\n\ |
|
|
660 Time of last access in the same form as time values returned from\n\ |
|
|
661 @code{time}. @xref{Timing Utilities}.\n\ |
|
|
662 \n\ |
|
|
663 @item mtime\n\ |
|
|
664 Time of last modification in the same form as time values returned from\n\ |
|
|
665 @code{time}. @xref{Timing Utilities}.\n\ |
|
2075
|
666 \n\ |
|
3301
|
667 @item ctime\n\ |
|
|
668 Time of last file status change in the same form as time values\n\ |
|
|
669 returned from @code{time}. @xref{Timing Utilities}.\n\ |
|
|
670 \n\ |
|
|
671 @item blksize\n\ |
|
|
672 Size of blocks in the file.\n\ |
|
|
673 \n\ |
|
|
674 @item blocks\n\ |
|
|
675 Number of blocks allocated for file.\n\ |
|
|
676 @end table\n\ |
|
|
677 \n\ |
|
|
678 If the call is successful @var{err} is 0 and @var{msg} is an empty\n\ |
|
|
679 string. If the file does not exist, or some other error occurs, @var{s}\n\ |
|
|
680 is an empty matrix, @var{err} is @minus{}1, and @var{msg} contains the\n\ |
|
|
681 corresponding system error message.\n\ |
|
|
682 \n\ |
|
|
683 If @var{file} is a symbolic link, @code{stat} will return information\n\ |
|
|
684 about the actual file the is referenced by the link. Use @code{lstat}\n\ |
|
|
685 if you want information about the symbolic link itself.\n\ |
|
|
686 \n\ |
|
|
687 For example,\n\ |
|
2075
|
688 \n\ |
|
3301
|
689 @example\n\ |
|
|
690 @group\n\ |
|
|
691 [s, err, msg] = stat (\"/vmlinuz\")\n\ |
|
|
692 @result{} s =\n\ |
|
|
693 @{\n\ |
|
|
694 atime = 855399756\n\ |
|
|
695 rdev = 0\n\ |
|
|
696 ctime = 847219094\n\ |
|
|
697 uid = 0\n\ |
|
|
698 size = 389218\n\ |
|
|
699 blksize = 4096\n\ |
|
|
700 mtime = 847219094\n\ |
|
|
701 gid = 6\n\ |
|
|
702 nlink = 1\n\ |
|
|
703 blocks = 768\n\ |
|
|
704 modestr = -rw-r--r--\n\ |
|
|
705 ino = 9316\n\ |
|
|
706 dev = 2049\n\ |
|
|
707 @}\n\ |
|
|
708 @result{} err = 0\n\ |
|
|
709 @result{} msg = \n\ |
|
|
710 @end group\n\ |
|
|
711 @end example\n\ |
|
|
712 @end deftypefn") |
|
2075
|
713 { |
|
2262
|
714 octave_value_list retval; |
|
2075
|
715 |
|
|
716 if (args.length () == 1) |
|
|
717 { |
|
2926
|
718 string fname = file_ops::tilde_expand (args(0).string_value ()); |
|
2075
|
719 |
|
|
720 if (! error_state) |
|
|
721 { |
|
|
722 file_stat fs (fname); |
|
|
723 |
|
|
724 if (fs) |
|
2262
|
725 { |
|
|
726 retval(2) = string (); |
|
|
727 retval(1) = 0.0; |
|
|
728 retval(0) = octave_value (mk_stat_map (fs)); |
|
|
729 } |
|
|
730 else |
|
|
731 { |
|
|
732 retval(2) = fs.error (); |
|
|
733 retval(1) = -1.0; |
|
|
734 retval(0) = Matrix (); |
|
|
735 } |
|
2075
|
736 } |
|
|
737 } |
|
|
738 else |
|
|
739 print_usage ("stat"); |
|
|
740 |
|
|
741 return retval; |
|
|
742 } |
|
|
743 |
|
|
744 DEFUN (unlink, args, , |
|
3301
|
745 "-*- texinfo -*-\n\ |
|
|
746 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} unlink (@var{file})\n\ |
|
|
747 Delete the file named @var{file}.\n\ |
|
2075
|
748 \n\ |
|
3301
|
749 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
750 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
751 system-dependent error message.\n\ |
|
|
752 @end deftypefn") |
|
2075
|
753 { |
|
2669
|
754 octave_value_list retval; |
|
|
755 |
|
|
756 retval(1) = string (); |
|
|
757 retval(0) = -1.0; |
|
2075
|
758 |
|
|
759 int nargin = args.length (); |
|
|
760 |
|
|
761 if (nargin == 1) |
|
|
762 { |
|
|
763 if (args(0).is_string ()) |
|
|
764 { |
|
|
765 string name = args(0).string_value (); |
|
|
766 |
|
2669
|
767 string msg; |
|
|
768 |
|
2926
|
769 int status = file_ops::unlink (name, msg); |
|
2669
|
770 |
|
2800
|
771 retval(0) = static_cast<double> (status); |
|
2937
|
772 retval(1) = msg; |
|
2075
|
773 } |
|
|
774 else |
|
|
775 error ("unlink: file name must be a string"); |
|
|
776 } |
|
|
777 else |
|
|
778 print_usage ("unlink"); |
|
|
779 |
|
|
780 return retval; |
|
|
781 } |
|
|
782 |
|
|
783 DEFUN (waitpid, args, , |
|
3301
|
784 "-*- texinfo -*-\n\ |
|
|
785 @deftypefn {Built-in Function} {[@var{pid}, @var{msg}] =} waitpid (@var{pid}, @var{options})\n\ |
|
|
786 Wait for process @var{pid} to terminate. The @var{pid} argument can be:\n\ |
|
2075
|
787 \n\ |
|
3301
|
788 @table @asis\n\ |
|
|
789 @item @minus{}1\n\ |
|
|
790 Wait for any child process.\n\ |
|
2075
|
791 \n\ |
|
3301
|
792 @item 0\n\ |
|
|
793 Wait for any child process whose process group ID is equal to that of\n\ |
|
|
794 the Octave interpreter process.\n\ |
|
2075
|
795 \n\ |
|
3301
|
796 @item > 0\n\ |
|
|
797 Wait for termination of the child process with ID @var{pid}.\n\ |
|
|
798 @end table\n\ |
|
|
799 \n\ |
|
|
800 The @var{options} argument can be:\n\ |
|
2075
|
801 \n\ |
|
3301
|
802 @table @asis\n\ |
|
|
803 @item 0\n\ |
|
|
804 Wait until signal is received or a child process exits (this is the\n\ |
|
|
805 default if the @var{options} argument is missing).\n\ |
|
|
806 \n\ |
|
|
807 @item 1\n\ |
|
|
808 Do not hang if status is not immediately available.\n\ |
|
2075
|
809 \n\ |
|
3301
|
810 @item 2\n\ |
|
|
811 Report the status of any child processes that are stopped, and whose\n\ |
|
|
812 status has not yet been reported since they stopped.\n\ |
|
|
813 \n\ |
|
|
814 @item 3\n\ |
|
|
815 Implies both 1 and 2.\n\ |
|
|
816 @end table\n\ |
|
|
817 \n\ |
|
|
818 If the returned value of @var{pid} is greater than 0, it is the process\n\ |
|
|
819 ID of the child process that exited. If an error occurs, @var{pid} will\n\ |
|
|
820 be less than zero and @var{msg} will contain a system-dependent error\n\ |
|
|
821 message.\n\ |
|
|
822 @end deftypefn") |
|
2075
|
823 { |
|
2669
|
824 octave_value_list retval; |
|
|
825 |
|
|
826 retval(1) = string (); |
|
|
827 retval(0) = -1.0; |
|
2075
|
828 |
|
|
829 int nargin = args.length (); |
|
|
830 |
|
|
831 if (nargin == 1 || nargin == 2) |
|
|
832 { |
|
3202
|
833 pid_t pid = args(0).int_value (true); |
|
2075
|
834 |
|
|
835 if (! error_state) |
|
|
836 { |
|
3202
|
837 int options = 0; |
|
2075
|
838 |
|
3202
|
839 if (args.length () == 2) |
|
|
840 { |
|
|
841 options = args(1).int_value (true); |
|
2075
|
842 |
|
|
843 if (! error_state) |
|
2669
|
844 { |
|
3202
|
845 if (options < 0 || options > 3) |
|
|
846 error ("waitpid: invalid OPTIONS value specified"); |
|
|
847 } |
|
|
848 else |
|
|
849 error ("waitpid: OPTIONS must be in integer"); |
|
|
850 } |
|
2937
|
851 |
|
3202
|
852 if (! error_state) |
|
|
853 { |
|
|
854 string msg; |
|
2669
|
855 |
|
3202
|
856 pid_t status = octave_syscalls::waitpid (pid, options, msg); |
|
|
857 |
|
|
858 retval(0) = static_cast<double> (status); |
|
|
859 retval(1) = msg; |
|
2075
|
860 } |
|
|
861 } |
|
3202
|
862 else |
|
|
863 error ("waitpid: PID must be an integer value"); |
|
2075
|
864 } |
|
|
865 else |
|
|
866 print_usage ("waitpid"); |
|
|
867 |
|
|
868 return retval; |
|
|
869 } |
|
|
870 |
|
|
871 #if !defined (O_NONBLOCK) && defined (O_NDELAY) |
|
|
872 #define O_NONBLOCK O_NDELAY |
|
|
873 #endif |
|
|
874 |
|
|
875 void |
|
|
876 symbols_of_syscalls (void) |
|
|
877 { |
|
|
878 #if defined (F_DUPFD) |
|
3141
|
879 DEFCONST (F_DUPFD, static_cast<double> (F_DUPFD), |
|
2075
|
880 ""); |
|
|
881 #endif |
|
|
882 |
|
|
883 #if defined (F_GETFD) |
|
3141
|
884 DEFCONST (F_GETFD, static_cast<double> (F_GETFD), |
|
2075
|
885 ""); |
|
|
886 #endif |
|
|
887 |
|
|
888 #if defined (F_GETFL) |
|
3141
|
889 DEFCONST (F_GETFL, static_cast<double> (F_GETFL), |
|
2075
|
890 ""); |
|
|
891 #endif |
|
|
892 |
|
|
893 #if defined (F_SETFD) |
|
3141
|
894 DEFCONST (F_SETFD, static_cast<double> (F_SETFD), |
|
2075
|
895 ""); |
|
|
896 #endif |
|
|
897 |
|
|
898 #if defined (F_SETFL) |
|
3141
|
899 DEFCONST (F_SETFL, static_cast<double> (F_SETFL), |
|
2075
|
900 ""); |
|
|
901 #endif |
|
|
902 |
|
|
903 #if defined (O_APPEND) |
|
3141
|
904 DEFCONST (O_APPEND, static_cast<double> (O_APPEND), |
|
2075
|
905 ""); |
|
|
906 #endif |
|
|
907 |
|
2669
|
908 #if defined (O_ASYNC) |
|
3141
|
909 DEFCONST (O_ASYNC, static_cast<double> (O_ASYNC), |
|
2669
|
910 ""); |
|
|
911 #endif |
|
|
912 |
|
2075
|
913 #if defined (O_CREAT) |
|
3141
|
914 DEFCONST (O_CREAT, static_cast<double> (O_CREAT), |
|
2075
|
915 ""); |
|
|
916 #endif |
|
|
917 |
|
|
918 #if defined (O_EXCL) |
|
3141
|
919 DEFCONST (O_EXCL, static_cast<double> (O_EXCL), |
|
2075
|
920 ""); |
|
|
921 #endif |
|
|
922 |
|
|
923 #if defined (O_NONBLOCK) |
|
3141
|
924 DEFCONST (O_NONBLOCK, static_cast<double> (O_NONBLOCK), |
|
2075
|
925 ""); |
|
|
926 #endif |
|
|
927 |
|
|
928 #if defined (O_RDONLY) |
|
3141
|
929 DEFCONST (O_RDONLY, static_cast<double> (O_RDONLY), |
|
2075
|
930 ""); |
|
|
931 #endif |
|
|
932 |
|
|
933 #if defined (O_RDWR) |
|
3141
|
934 DEFCONST (O_RDWR, static_cast<double> (O_RDWR), |
|
2075
|
935 ""); |
|
|
936 #endif |
|
|
937 |
|
2669
|
938 #if defined (O_SYNC) |
|
3141
|
939 DEFCONST (O_SYNC, static_cast<double> (O_SYNC), |
|
2669
|
940 ""); |
|
|
941 #endif |
|
|
942 |
|
2075
|
943 #if defined (O_TRUNC) |
|
3141
|
944 DEFCONST (O_TRUNC, static_cast<double> (O_TRUNC), |
|
2075
|
945 ""); |
|
|
946 #endif |
|
|
947 |
|
|
948 #if defined (O_WRONLY) |
|
3141
|
949 DEFCONST (O_WRONLY, static_cast<double> (O_WRONLY), |
|
2075
|
950 ""); |
|
|
951 #endif |
|
|
952 } |
|
|
953 |
|
|
954 /* |
|
|
955 ;;; Local Variables: *** |
|
|
956 ;;; mode: C++ *** |
|
|
957 ;;; End: *** |
|
|
958 */ |
