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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 <cstdio> |
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33 #include <cstring> |
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34 |
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35 #ifdef HAVE_UNISTD_H |
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36 #ifdef HAVE_SYS_TYPES_H |
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37 #include <sys/types.h> |
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38 #endif |
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39 #include <unistd.h> |
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40 #endif |
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41 |
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42 #ifdef HAVE_FCNTL_H |
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43 #include <fcntl.h> |
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44 #endif |
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45 |
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46 #include "file-ops.h" |
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47 #include "file-stat.h" |
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48 #include "oct-syscalls.h" |
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49 |
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50 #include "defun.h" |
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51 #include "error.h" |
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52 #include "gripes.h" |
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53 #include "lo-utils.h" |
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54 #include "oct-map.h" |
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55 #include "oct-obj.h" |
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56 #include "oct-stdstrm.h" |
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57 #include "oct-stream.h" |
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58 #include "sysdep.h" |
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59 #include "syswait.h" |
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60 #include "utils.h" |
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61 #include "variables.h" |
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62 |
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63 static Octave_map |
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64 mk_stat_map (const file_stat& fs) |
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65 { |
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66 Octave_map m; |
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67 |
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68 m["dev"] = static_cast<double> (fs.dev ()); |
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69 m["ino"] = static_cast<double> (fs.ino ()); |
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70 m["modestr"] = fs.mode_as_string (); |
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71 m["nlink"] = static_cast<double> (fs.nlink ()); |
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72 m["uid"] = static_cast<double> (fs.uid ()); |
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73 m["gid"] = static_cast<double> (fs.gid ()); |
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74 #if defined (HAVE_STRUCT_STAT_ST_RDEV) |
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75 m["rdev"] = static_cast<double> (fs.rdev ()); |
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76 #endif |
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77 m["size"] = static_cast<double> (fs.size ()); |
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78 m["atime"] = static_cast<double> (fs.atime ()); |
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79 m["mtime"] = static_cast<double> (fs.mtime ()); |
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80 m["ctime"] = static_cast<double> (fs.ctime ()); |
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81 #if defined (HAVE_STRUCT_STAT_ST_BLKSIZE) |
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82 m["blksize"] = static_cast<double> (fs.blksize ()); |
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83 #endif |
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84 #if defined (HAVE_STRUCT_STAT_ST_BLOCKS) |
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85 m["blocks"] = static_cast<double> (fs.blocks ()); |
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86 #endif |
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87 |
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88 return m; |
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89 } |
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90 |
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91 DEFUN (dup2, args, , |
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92 "-*- texinfo -*-\n\ |
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93 @deftypefn {Built-in Function} {[@var{fid}, @var{msg}] =} dup2 (@var{old}, @var{new})\n\ |
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94 Duplicate a file descriptor.\n\ |
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95 \n\ |
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96 If successful, @var{fid} is greater than zero and contains the new file\n\ |
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97 ID. Otherwise, @var{fid} is negative and @var{msg} contains a\n\ |
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98 system-dependent error message.\n\ |
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99 @end deftypefn") |
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100 { |
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101 octave_value_list retval; |
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102 |
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103 retval(1) = std::string (); |
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104 retval(0) = -1.0; |
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105 |
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106 int nargin = args.length (); |
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107 |
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108 if (nargin == 2) |
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109 { |
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110 octave_stream old_stream |
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111 = octave_stream_list::lookup (args(0), "dup2"); |
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112 |
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113 if (! error_state) |
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114 { |
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115 octave_stream new_stream |
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116 = octave_stream_list::lookup (args(1), "dup2"); |
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117 |
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118 if (! error_state) |
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119 { |
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120 int i_old = old_stream.file_number (); |
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121 int i_new = new_stream.file_number (); |
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122 |
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123 if (i_old >= 0 && i_new >= 0) |
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124 { |
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125 std::string msg; |
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126 |
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127 int status = octave_syscalls::dup2 (i_old, i_new, msg); |
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128 |
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129 retval(0) = static_cast<double> (status); |
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130 retval(1) = msg; |
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131 } |
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132 } |
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133 } |
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134 else |
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135 error ("dup2: invalid stream"); |
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136 } |
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137 else |
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138 print_usage ("dup2"); |
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139 |
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140 return retval; |
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141 } |
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142 |
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143 DEFUN (exec, args, , |
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144 "-*- texinfo -*-\n\ |
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145 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} exec (@var{file}, @var{args})\n\ |
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146 Replace current process with a new process. Calling @code{exec} without\n\ |
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147 first calling @code{fork} will terminate your current Octave process and\n\ |
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148 replace it with the program named by @var{file}. For example,\n\ |
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149 \n\ |
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150 @example\n\ |
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151 exec (\"ls\" \"-l\")\n\ |
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152 @end example\n\ |
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153 \n\ |
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154 @noindent\n\ |
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155 will run @code{ls} and return you to your shell prompt.\n\ |
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156 \n\ |
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157 If successful, @code{exec} does not return. If @code{exec} does return,\n\ |
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158 @var{err} will be nonzero, and @var{msg} will contain a system-dependent\n\ |
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159 error message.\n\ |
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160 @end deftypefn") |
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161 { |
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162 octave_value_list retval; |
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163 |
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164 retval(1) = std::string (); |
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165 retval(0) = -1.0; |
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166 |
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167 int nargin = args.length (); |
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168 |
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169 if (nargin == 1 || nargin == 2) |
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170 { |
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171 std::string exec_file = args(0).string_value (); |
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172 |
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173 if (! error_state) |
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174 { |
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175 string_vector exec_args; |
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176 |
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177 if (nargin == 2) |
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178 { |
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179 string_vector tmp = args(1).all_strings (); |
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180 |
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181 if (! error_state) |
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182 { |
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183 int len = tmp.length (); |
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184 |
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185 exec_args.resize (len + 1); |
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186 |
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187 exec_args[0] = exec_file; |
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188 |
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189 for (int i = 0; i < len; i++) |
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190 exec_args[i+1] = tmp[i]; |
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191 } |
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192 else |
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193 error ("exec: arguments must be strings"); |
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194 } |
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195 else |
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196 { |
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197 exec_args.resize (1); |
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198 |
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199 exec_args[0] = exec_file; |
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200 } |
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201 |
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202 if (! error_state) |
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203 { |
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204 std::string msg; |
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205 |
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206 int status = octave_syscalls::execvp (exec_file, exec_args, msg); |
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207 |
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208 retval(0) = static_cast<double> (status); |
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209 retval(1) = msg; |
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210 } |
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211 } |
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212 else |
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213 error ("exec: first argument must be a string"); |
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214 } |
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215 else |
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216 print_usage ("exec"); |
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217 |
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218 return retval; |
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219 } |
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220 |
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221 DEFUN (fcntl, args, , |
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222 "-*- texinfo -*-\n\ |
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223 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} fcntl (@var{fid}, @var{request}, @var{arg})\n\ |
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224 Change the properties of the open file @var{fid}. The following values\n\ |
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225 may be passed as @var{request}:\n\ |
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226 \n\ |
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227 @vtable @code\n\ |
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228 @item F_DUPFD\n\ |
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229 Return a duplicate file descriptor.\n\ |
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230 \n\ |
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231 @item F_GETFD\n\ |
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232 Return the file descriptor flags for @var{fid}.\n\ |
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233 \n\ |
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234 @item F_SETFD\n\ |
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235 Set the file descriptor flags for @var{fid}.\n\ |
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236 \n\ |
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237 @item F_GETFL\n\ |
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238 Return the file status flags for @var{fid}. The following codes may be\n\ |
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239 returned (some of the flags may be undefined on some systems).\n\ |
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240 \n\ |
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241 @vtable @code\n\ |
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242 @item O_RDONLY\n\ |
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243 Open for reading only.\n\ |
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244 \n\ |
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245 @item O_WRONLY\n\ |
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246 Open for writing only.\n\ |
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247 \n\ |
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248 @item O_RDWR\n\ |
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249 Open for reading and writing.\n\ |
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250 \n\ |
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251 @item O_APPEND\n\ |
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252 Append on each write.\n\ |
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253 \n\ |
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254 @item O_NONBLOCK\n\ |
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255 Nonblocking mode.\n\ |
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256 \n\ |
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257 @item O_SYNC\n\ |
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258 Wait for writes to complete.\n\ |
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259 \n\ |
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260 @item O_ASYNC\n\ |
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261 Asynchronous I/O.\n\ |
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262 @end vtable\n\ |
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263 \n\ |
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264 @item F_SETFL\n\ |
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265 Set the file status flags for @var{fid} to the value specified by\n\ |
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266 @var{arg}. The only flags that can be changed are @code{O_APPEND} and\n\ |
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267 @code{O_NONBLOCK}.\n\ |
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268 @end vtable\n\ |
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269 \n\ |
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270 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
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271 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
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272 system-dependent error message.\n\ |
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273 @end deftypefn") |
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274 { |
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275 octave_value_list retval; |
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276 |
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277 retval(1) = std::string (); |
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278 retval(0) = -1.0; |
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279 |
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280 int nargin = args.length (); |
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281 |
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282 if (nargin == 3) |
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283 { |
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284 octave_stream strm = octave_stream_list::lookup (args (0), "fcntl"); |
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285 |
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286 if (! error_state) |
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287 { |
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288 int fid = strm.file_number (); |
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289 |
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290 int req = args(1).int_value (true); |
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291 int arg = args(2).int_value (true); |
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292 |
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293 if (! error_state) |
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294 { |
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295 // XXX FIXME XXX -- Need better checking here? |
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296 if (fid < 0) |
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297 error ("fcntl: invalid file id"); |
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298 else |
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299 { |
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300 std::string msg; |
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301 |
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302 int status = octave_syscalls::fcntl (fid, req, arg, msg); |
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303 |
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304 retval(0) = static_cast<double> (status); |
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305 retval(1) = msg; |
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306 } |
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307 } |
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308 } |
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309 else |
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310 error ("fcntl: file id, request, and argument must be integers"); |
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311 } |
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312 else |
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313 print_usage ("fcntl"); |
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314 |
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315 return retval; |
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316 } |
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317 |
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318 DEFUN (fork, args, , |
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319 "-*- texinfo -*-\n\ |
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320 @deftypefn {Built-in Function} {[@var{pid}, @var{msg}] =} fork ()\n\ |
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321 Create a copy of the current process.\n\ |
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322 \n\ |
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323 Fork can return one of the following values:\n\ |
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324 \n\ |
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325 @table @asis\n\ |
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326 @item > 0\n\ |
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327 You are in the parent process. The value returned from @code{fork} is\n\ |
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328 the process id of the child process. You should probably arrange to\n\ |
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329 wait for any child processes to exit.\n\ |
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330 \n\ |
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331 @item 0\n\ |
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332 You are in the child process. You can call @code{exec} to start another\n\ |
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333 process. If that fails, you should probably call @code{exit}.\n\ |
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334 \n\ |
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335 @item < 0\n\ |
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336 The call to @code{fork} failed for some reason. You must take evasive\n\ |
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337 action. A system dependent error message will be waiting in @var{msg}.\n\ |
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338 @end table\n\ |
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339 @end deftypefn") |
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340 { |
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341 octave_value_list retval; |
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342 |
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343 retval(1) = std::string (); |
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344 retval(0) = -1.0; |
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345 |
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346 int nargin = args.length (); |
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347 |
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348 if (nargin == 0) |
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349 { |
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350 std::string msg; |
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351 |
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352 pid_t pid = octave_syscalls::fork (msg); |
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353 |
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354 retval(0) = static_cast<double> (pid); |
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355 retval(1) = msg; |
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356 } |
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357 else |
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358 print_usage ("fork"); |
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359 |
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360 return retval; |
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361 } |
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362 |
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363 DEFUN (getpgrp, args, , |
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364 "-*- texinfo -*-\n\ |
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365 @deftypefn {Built-in Function} {pgid =} getpgrp ()\n\ |
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366 Return the process group id of the current process.\n\ |
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367 @end deftypefn") |
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368 { |
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369 octave_value_list retval; |
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370 |
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371 retval(1) = std::string (); |
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372 retval(0) = -1.0; |
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373 |
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374 int nargin = args.length (); |
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375 |
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376 if (nargin == 0) |
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377 { |
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378 std::string msg; |
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379 |
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380 retval(0) = static_cast<double> (octave_syscalls::getpgrp (msg)); |
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381 retval(1) = msg; |
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382 } |
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383 else |
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384 print_usage ("getpgrp"); |
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385 |
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386 return retval; |
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387 } |
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388 |
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389 DEFUN (getpid, args, , |
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390 "-*- texinfo -*-\n\ |
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391 @deftypefn {Built-in Function} {pid =} getpid ()\n\ |
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392 Return the process id of the current process.\n\ |
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393 @end deftypefn") |
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394 { |
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395 double retval = -1.0; |
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396 |
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397 int nargin = args.length (); |
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398 |
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399 if (nargin == 0) |
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400 retval = octave_syscalls::getpid (); |
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401 else |
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402 print_usage ("getpid"); |
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403 |
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404 return retval; |
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405 } |
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406 |
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407 DEFUN (getppid, args, , |
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408 "-*- texinfo -*-\n\ |
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409 @deftypefn {Built-in Function} {pid =} getppid ()\n\ |
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410 Return the process id of the parent process.\n\ |
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411 @end deftypefn") |
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412 { |
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413 double retval = -1.0; |
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414 |
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415 int nargin = args.length (); |
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416 |
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417 if (nargin == 0) |
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418 retval = octave_syscalls::getppid (); |
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419 else |
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420 print_usage ("getppid"); |
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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 (getegid, args, , |
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426 "-*- texinfo -*-\n\ |
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427 @deftypefn {Built-in Function} {egid =} getegid ()\n\ |
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428 Return the effective group id of the current process.\n\ |
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429 @end deftypefn") |
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430 { |
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431 double retval = -1.0; |
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432 |
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433 int nargin = args.length (); |
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434 |
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435 if (nargin == 0) |
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436 retval = octave_syscalls::getegid (); |
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437 else |
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2475
|
438 print_usage ("getegid"); |
|
|
439 |
|
|
440 return retval; |
|
|
441 } |
|
|
442 |
|
|
443 DEFUN (getgid, args, , |
|
3301
|
444 "-*- texinfo -*-\n\ |
|
|
445 @deftypefn {Built-in Function} {gid =} getgid ()\n\ |
|
|
446 Return the real group id of the current process.\n\ |
|
|
447 @end deftypefn") |
|
2475
|
448 { |
|
|
449 double retval = -1.0; |
|
|
450 |
|
|
451 int nargin = args.length (); |
|
|
452 |
|
|
453 if (nargin == 0) |
|
2937
|
454 retval = octave_syscalls::getgid (); |
|
2475
|
455 else |
|
|
456 print_usage ("getgid"); |
|
2075
|
457 |
|
|
458 return retval; |
|
|
459 } |
|
|
460 |
|
2473
|
461 DEFUN (geteuid, args, , |
|
3301
|
462 "-*- texinfo -*-\n\ |
|
|
463 @deftypefn {Built-in Function} {euid =} geteuid ()\n\ |
|
|
464 Return the effective user id of the current process.\n\ |
|
|
465 @end deftypefn") |
|
2472
|
466 { |
|
|
467 double retval = -1.0; |
|
|
468 |
|
|
469 int nargin = args.length (); |
|
|
470 |
|
|
471 if (nargin == 0) |
|
2937
|
472 retval = octave_syscalls::geteuid (); |
|
2472
|
473 else |
|
|
474 print_usage ("geteuid"); |
|
2473
|
475 |
|
|
476 return retval; |
|
2472
|
477 } |
|
|
478 |
|
2473
|
479 DEFUN (getuid, args, , |
|
3301
|
480 "-*- texinfo -*-\n\ |
|
|
481 @deftypefn {Built-in Function} {uid =} getuid ()\n\ |
|
|
482 Return the real user id of the current process.\n\ |
|
|
483 @end deftypefn") |
|
2472
|
484 { |
|
|
485 double retval = -1.0; |
|
|
486 |
|
|
487 int nargin = args.length (); |
|
|
488 |
|
|
489 if (nargin == 0) |
|
2937
|
490 retval = octave_syscalls::getuid (); |
|
2472
|
491 else |
|
|
492 print_usage ("getuid"); |
|
2473
|
493 |
|
|
494 return retval; |
|
2472
|
495 } |
|
|
496 |
|
2075
|
497 DEFUN (lstat, args, , |
|
3458
|
498 "-*- texinfo -*-\n\ |
|
|
499 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} lstat (@var{file})\n\ |
|
|
500 See stat.\n\ |
|
|
501 @end deftypefn") |
|
2075
|
502 { |
|
2263
|
503 octave_value_list retval; |
|
2075
|
504 |
|
|
505 if (args.length () == 1) |
|
|
506 { |
|
3523
|
507 std::string fname = file_ops::tilde_expand (args(0).string_value ()); |
|
2075
|
508 |
|
|
509 if (! error_state) |
|
|
510 { |
|
|
511 file_stat fs (fname, false); |
|
|
512 |
|
2263
|
513 if (fs) |
|
2262
|
514 { |
|
3523
|
515 retval(2) = std::string (); |
|
2262
|
516 retval(1) = 0.0; |
|
|
517 retval(0) = octave_value (mk_stat_map (fs)); |
|
|
518 } |
|
|
519 else |
|
|
520 { |
|
|
521 retval(2) = fs.error (); |
|
|
522 retval(1) = -1.0; |
|
|
523 retval(0) = Matrix (); |
|
|
524 } |
|
2075
|
525 } |
|
|
526 } |
|
|
527 else |
|
|
528 print_usage ("lstat"); |
|
|
529 |
|
|
530 return retval; |
|
|
531 } |
|
|
532 |
|
3301
|
533 |
|
|
534 |
|
2075
|
535 DEFUN (mkfifo, args, , |
|
3345
|
536 "-*- texinfo -*-\n\ |
|
|
537 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} mkfifo (@var{name})\n\ |
|
3301
|
538 Create a @var{fifo} special file named @var{name} with file mode @var{mode}\n\\n\ |
|
2075
|
539 \n\ |
|
3301
|
540 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
541 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
542 system-dependent error message.\n\ |
|
|
543 @end deftypefn") |
|
2075
|
544 { |
|
2669
|
545 octave_value_list retval; |
|
|
546 |
|
3523
|
547 retval(1) = std::string (); |
|
2669
|
548 retval(0) = -1.0; |
|
2075
|
549 |
|
|
550 int nargin = args.length (); |
|
|
551 |
|
|
552 if (nargin == 2) |
|
|
553 { |
|
|
554 if (args(0).is_string ()) |
|
|
555 { |
|
3523
|
556 std::string name = args(0).string_value (); |
|
2075
|
557 |
|
|
558 if (args(1).is_scalar_type ()) |
|
|
559 { |
|
2800
|
560 long mode = static_cast<long> (args(1).double_value ()); |
|
2075
|
561 |
|
3523
|
562 std::string msg; |
|
2669
|
563 |
|
2926
|
564 int status = file_ops::mkfifo (name, mode, msg); |
|
2669
|
565 |
|
2800
|
566 retval(0) = static_cast<double> (status); |
|
2669
|
567 |
|
|
568 if (status < 0) |
|
|
569 retval(1) = msg; |
|
2075
|
570 } |
|
|
571 else |
|
|
572 error ("mkfifo: MODE must be an integer"); |
|
|
573 } |
|
|
574 else |
|
|
575 error ("mkfifo: file name must be a string"); |
|
|
576 } |
|
|
577 else |
|
|
578 print_usage ("mkfifo"); |
|
|
579 |
|
|
580 return retval; |
|
|
581 } |
|
|
582 |
|
|
583 DEFUN (pipe, args, , |
|
3301
|
584 "-*- texinfo -*-\n\ |
|
|
585 @deftypefn {Built-in Function} {[@var{file_ids}, @var{err}, @var{msg}] =} pipe ()\n\ |
|
|
586 Create a pipe and return the vector @var{file_ids}, which corresponding\n\ |
|
|
587 to the reading and writing ends of the pipe.\n\ |
|
2669
|
588 \n\ |
|
3301
|
589 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
590 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
591 system-dependent error message.\n\ |
|
|
592 @end deftypefn") |
|
2075
|
593 { |
|
2669
|
594 octave_value_list retval; |
|
|
595 |
|
3523
|
596 retval(2) = std::string (); |
|
2669
|
597 retval(1) = -1.0; |
|
|
598 retval(0) = Matrix (); |
|
2075
|
599 |
|
|
600 int nargin = args.length (); |
|
|
601 |
|
|
602 if (nargin == 0) |
|
|
603 { |
|
|
604 int fid[2]; |
|
|
605 |
|
3523
|
606 std::string msg; |
|
2937
|
607 |
|
|
608 int status = octave_syscalls::pipe (fid, msg); |
|
2669
|
609 |
|
|
610 if (status < 0) |
|
2937
|
611 retval(2) = msg; |
|
2669
|
612 else |
|
2075
|
613 { |
|
3340
|
614 FILE *ifile = fdopen (fid[0], "r"); |
|
|
615 FILE *ofile = fdopen (fid[1], "w"); |
|
2075
|
616 |
|
3523
|
617 octave_stream is = octave_istdiostream::create (std::string (), ifile); |
|
|
618 octave_stream os = octave_ostdiostream::create (std::string (), ofile); |
|
2075
|
619 |
|
2902
|
620 octave_value_list file_ids; |
|
2075
|
621 |
|
2902
|
622 file_ids(1) = octave_stream_list::insert (os); |
|
|
623 file_ids(0) = octave_stream_list::insert (is); |
|
2075
|
624 |
|
2800
|
625 retval(1) = static_cast<double> (status); |
|
2902
|
626 retval(0) = octave_value (file_ids); |
|
2669
|
627 } |
|
2075
|
628 } |
|
|
629 else |
|
|
630 print_usage ("pipe"); |
|
|
631 |
|
|
632 return retval; |
|
|
633 } |
|
|
634 |
|
|
635 DEFUN (stat, args, , |
|
3301
|
636 "-*- texinfo -*-\n\ |
|
|
637 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} stat (@var{file})\n\ |
|
|
638 @deftypefnx {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} lstat (@var{file})\n\ |
|
|
639 Return a structure @var{s} containing the following information about\n\ |
|
|
640 @var{file}.\n\ |
|
|
641 \n\ |
|
|
642 @table @code\n\ |
|
|
643 @item dev\n\ |
|
|
644 ID of device containing a directory entry for this file.\n\ |
|
|
645 \n\ |
|
|
646 @item ino\n\ |
|
|
647 File number of the file.\n\ |
|
|
648 \n\ |
|
|
649 @item modestr\n\ |
|
|
650 File mode, as a string of ten letters or dashes as would be returned by\n\ |
|
|
651 @kbd{ls -l}.\n\ |
|
|
652 \n\ |
|
|
653 @item nlink\n\ |
|
|
654 Number of links.\n\ |
|
2075
|
655 \n\ |
|
3301
|
656 @item uid\n\ |
|
|
657 User ID of file's owner.\n\ |
|
|
658 \n\ |
|
|
659 @item gid\n\ |
|
|
660 Group ID of file's group.\n\ |
|
|
661 \n\ |
|
|
662 @item rdev\n\ |
|
|
663 ID of device for block or character special files.\n\ |
|
|
664 \n\ |
|
|
665 @item size\n\ |
|
|
666 Size in bytes.\n\ |
|
|
667 \n\ |
|
|
668 @item atime\n\ |
|
|
669 Time of last access in the same form as time values returned from\n\ |
|
|
670 @code{time}. @xref{Timing Utilities}.\n\ |
|
|
671 \n\ |
|
|
672 @item mtime\n\ |
|
|
673 Time of last modification in the same form as time values returned from\n\ |
|
|
674 @code{time}. @xref{Timing Utilities}.\n\ |
|
2075
|
675 \n\ |
|
3301
|
676 @item ctime\n\ |
|
|
677 Time of last file status change in the same form as time values\n\ |
|
|
678 returned from @code{time}. @xref{Timing Utilities}.\n\ |
|
|
679 \n\ |
|
|
680 @item blksize\n\ |
|
|
681 Size of blocks in the file.\n\ |
|
|
682 \n\ |
|
|
683 @item blocks\n\ |
|
|
684 Number of blocks allocated for file.\n\ |
|
|
685 @end table\n\ |
|
|
686 \n\ |
|
|
687 If the call is successful @var{err} is 0 and @var{msg} is an empty\n\ |
|
|
688 string. If the file does not exist, or some other error occurs, @var{s}\n\ |
|
|
689 is an empty matrix, @var{err} is @minus{}1, and @var{msg} contains the\n\ |
|
|
690 corresponding system error message.\n\ |
|
|
691 \n\ |
|
|
692 If @var{file} is a symbolic link, @code{stat} will return information\n\ |
|
|
693 about the actual file the is referenced by the link. Use @code{lstat}\n\ |
|
|
694 if you want information about the symbolic link itself.\n\ |
|
|
695 \n\ |
|
|
696 For example,\n\ |
|
2075
|
697 \n\ |
|
3301
|
698 @example\n\ |
|
|
699 @group\n\ |
|
|
700 [s, err, msg] = stat (\"/vmlinuz\")\n\ |
|
|
701 @result{} s =\n\ |
|
|
702 @{\n\ |
|
|
703 atime = 855399756\n\ |
|
|
704 rdev = 0\n\ |
|
|
705 ctime = 847219094\n\ |
|
|
706 uid = 0\n\ |
|
|
707 size = 389218\n\ |
|
|
708 blksize = 4096\n\ |
|
|
709 mtime = 847219094\n\ |
|
|
710 gid = 6\n\ |
|
|
711 nlink = 1\n\ |
|
|
712 blocks = 768\n\ |
|
|
713 modestr = -rw-r--r--\n\ |
|
|
714 ino = 9316\n\ |
|
|
715 dev = 2049\n\ |
|
|
716 @}\n\ |
|
|
717 @result{} err = 0\n\ |
|
|
718 @result{} msg = \n\ |
|
|
719 @end group\n\ |
|
|
720 @end example\n\ |
|
|
721 @end deftypefn") |
|
2075
|
722 { |
|
2262
|
723 octave_value_list retval; |
|
2075
|
724 |
|
|
725 if (args.length () == 1) |
|
|
726 { |
|
3523
|
727 std::string fname = file_ops::tilde_expand (args(0).string_value ()); |
|
2075
|
728 |
|
|
729 if (! error_state) |
|
|
730 { |
|
|
731 file_stat fs (fname); |
|
|
732 |
|
|
733 if (fs) |
|
2262
|
734 { |
|
3523
|
735 retval(2) = std::string (); |
|
2262
|
736 retval(1) = 0.0; |
|
|
737 retval(0) = octave_value (mk_stat_map (fs)); |
|
|
738 } |
|
|
739 else |
|
|
740 { |
|
|
741 retval(2) = fs.error (); |
|
|
742 retval(1) = -1.0; |
|
|
743 retval(0) = Matrix (); |
|
|
744 } |
|
2075
|
745 } |
|
|
746 } |
|
|
747 else |
|
|
748 print_usage ("stat"); |
|
|
749 |
|
|
750 return retval; |
|
|
751 } |
|
|
752 |
|
|
753 DEFUN (unlink, args, , |
|
3301
|
754 "-*- texinfo -*-\n\ |
|
|
755 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} unlink (@var{file})\n\ |
|
|
756 Delete the file named @var{file}.\n\ |
|
2075
|
757 \n\ |
|
3301
|
758 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
|
|
759 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ |
|
|
760 system-dependent error message.\n\ |
|
|
761 @end deftypefn") |
|
2075
|
762 { |
|
2669
|
763 octave_value_list retval; |
|
|
764 |
|
3523
|
765 retval(1) = std::string (); |
|
2669
|
766 retval(0) = -1.0; |
|
2075
|
767 |
|
|
768 int nargin = args.length (); |
|
|
769 |
|
|
770 if (nargin == 1) |
|
|
771 { |
|
|
772 if (args(0).is_string ()) |
|
|
773 { |
|
3523
|
774 std::string name = args(0).string_value (); |
|
2075
|
775 |
|
3523
|
776 std::string msg; |
|
2669
|
777 |
|
2926
|
778 int status = file_ops::unlink (name, msg); |
|
2669
|
779 |
|
2800
|
780 retval(0) = static_cast<double> (status); |
|
2937
|
781 retval(1) = msg; |
|
2075
|
782 } |
|
|
783 else |
|
|
784 error ("unlink: file name must be a string"); |
|
|
785 } |
|
|
786 else |
|
|
787 print_usage ("unlink"); |
|
|
788 |
|
|
789 return retval; |
|
|
790 } |
|
|
791 |
|
|
792 DEFUN (waitpid, args, , |
|
3301
|
793 "-*- texinfo -*-\n\ |
|
|
794 @deftypefn {Built-in Function} {[@var{pid}, @var{msg}] =} waitpid (@var{pid}, @var{options})\n\ |
|
|
795 Wait for process @var{pid} to terminate. The @var{pid} argument can be:\n\ |
|
2075
|
796 \n\ |
|
3301
|
797 @table @asis\n\ |
|
|
798 @item @minus{}1\n\ |
|
|
799 Wait for any child process.\n\ |
|
2075
|
800 \n\ |
|
3301
|
801 @item 0\n\ |
|
|
802 Wait for any child process whose process group ID is equal to that of\n\ |
|
|
803 the Octave interpreter process.\n\ |
|
2075
|
804 \n\ |
|
3301
|
805 @item > 0\n\ |
|
|
806 Wait for termination of the child process with ID @var{pid}.\n\ |
|
|
807 @end table\n\ |
|
|
808 \n\ |
|
|
809 The @var{options} argument can be:\n\ |
|
2075
|
810 \n\ |
|
3301
|
811 @table @asis\n\ |
|
|
812 @item 0\n\ |
|
|
813 Wait until signal is received or a child process exits (this is the\n\ |
|
|
814 default if the @var{options} argument is missing).\n\ |
|
|
815 \n\ |
|
|
816 @item 1\n\ |
|
|
817 Do not hang if status is not immediately available.\n\ |
|
2075
|
818 \n\ |
|
3301
|
819 @item 2\n\ |
|
|
820 Report the status of any child processes that are stopped, and whose\n\ |
|
|
821 status has not yet been reported since they stopped.\n\ |
|
|
822 \n\ |
|
|
823 @item 3\n\ |
|
|
824 Implies both 1 and 2.\n\ |
|
|
825 @end table\n\ |
|
|
826 \n\ |
|
|
827 If the returned value of @var{pid} is greater than 0, it is the process\n\ |
|
|
828 ID of the child process that exited. If an error occurs, @var{pid} will\n\ |
|
|
829 be less than zero and @var{msg} will contain a system-dependent error\n\ |
|
|
830 message.\n\ |
|
|
831 @end deftypefn") |
|
2075
|
832 { |
|
2669
|
833 octave_value_list retval; |
|
|
834 |
|
3523
|
835 retval(1) = std::string (); |
|
2669
|
836 retval(0) = -1.0; |
|
2075
|
837 |
|
|
838 int nargin = args.length (); |
|
|
839 |
|
|
840 if (nargin == 1 || nargin == 2) |
|
|
841 { |
|
3202
|
842 pid_t pid = args(0).int_value (true); |
|
2075
|
843 |
|
|
844 if (! error_state) |
|
|
845 { |
|
3202
|
846 int options = 0; |
|
2075
|
847 |
|
3202
|
848 if (args.length () == 2) |
|
|
849 { |
|
|
850 options = args(1).int_value (true); |
|
2075
|
851 |
|
|
852 if (! error_state) |
|
2669
|
853 { |
|
3202
|
854 if (options < 0 || options > 3) |
|
|
855 error ("waitpid: invalid OPTIONS value specified"); |
|
|
856 } |
|
|
857 else |
|
|
858 error ("waitpid: OPTIONS must be in integer"); |
|
|
859 } |
|
2937
|
860 |
|
3202
|
861 if (! error_state) |
|
|
862 { |
|
3523
|
863 std::string msg; |
|
2669
|
864 |
|
3202
|
865 pid_t status = octave_syscalls::waitpid (pid, options, msg); |
|
|
866 |
|
|
867 retval(0) = static_cast<double> (status); |
|
|
868 retval(1) = msg; |
|
2075
|
869 } |
|
|
870 } |
|
3202
|
871 else |
|
|
872 error ("waitpid: PID must be an integer value"); |
|
2075
|
873 } |
|
|
874 else |
|
|
875 print_usage ("waitpid"); |
|
|
876 |
|
|
877 return retval; |
|
|
878 } |
|
|
879 |
|
|
880 #if !defined (O_NONBLOCK) && defined (O_NDELAY) |
|
|
881 #define O_NONBLOCK O_NDELAY |
|
|
882 #endif |
|
|
883 |
|
|
884 void |
|
|
885 symbols_of_syscalls (void) |
|
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886 { |
|
|
887 #if defined (F_DUPFD) |
|
3360
|
888 DEFCONSTX ("F_DUPFD", SBV_F_DUPFD, static_cast<double> (F_DUPFD), |
|
3446
|
889 "-*- texinfo -*-\n\ |
|
|
890 @defvr {Built-in Variable} F_DUPFD\n\ |
|
|
891 @end defvr"); |
|
2075
|
892 #endif |
|
|
893 |
|
|
894 #if defined (F_GETFD) |
|
3360
|
895 DEFCONSTX ("F_GETFD", SBV_F_GETFD, static_cast<double> (F_GETFD), |
|
3446
|
896 "-*- texinfo -*-\n\ |
|
|
897 @defvr {Built-in Variable} F_GETFD\n\ |
|
|
898 @end defvr"); |
|
2075
|
899 #endif |
|
|
900 |
|
|
901 #if defined (F_GETFL) |
|
3360
|
902 DEFCONSTX ("F_GETFL", SBV_F_GETFL, static_cast<double> (F_GETFL), |
|
3446
|
903 "-*- texinfo -*-\n\ |
|
|
904 @defvr {Built-in Variable} F_GETFL\n\ |
|
|
905 @end defvr"); |
|
2075
|
906 #endif |
|
|
907 |
|
|
908 #if defined (F_SETFD) |
|
3360
|
909 DEFCONSTX ("F_SETFD", SBV_F_SETFD, static_cast<double> (F_SETFD), |
|
3446
|
910 "-*- texinfo -*-\n\ |
|
|
911 @defvr {Built-in Variable} F_SETFD\n\ |
|
|
912 @end defvr"); |
|
2075
|
913 #endif |
|
|
914 |
|
|
915 #if defined (F_SETFL) |
|
3360
|
916 DEFCONSTX ("F_SETFL", SBV_F_SETFL, static_cast<double> (F_SETFL), |
|
3446
|
917 "-*- texinfo -*-\n\ |
|
|
918 @defvr {Built-in Variable} F_SETFL\n\ |
|
|
919 @end defvr"); |
|
2075
|
920 #endif |
|
|
921 |
|
|
922 #if defined (O_APPEND) |
|
3360
|
923 DEFCONSTX ("O_APPEND", SBV_O_APPEND, static_cast<double> (O_APPEND), |
|
3446
|
924 "-*- texinfo -*-\n\ |
|
|
925 @defvr {Built-in Variable} O_APPEND\n\ |
|
|
926 @end defvr"); |
|
2075
|
927 #endif |
|
|
928 |
|
2669
|
929 #if defined (O_ASYNC) |
|
3360
|
930 DEFCONSTX ("O_ASYNC", SBV_O_ASYNC, static_cast<double> (O_ASYNC), |
|
3446
|
931 "-*- texinfo -*-\n\ |
|
|
932 @defvr {Built-in Variable} O_ASYNC\n\ |
|
|
933 @end defvr"); |
|
2669
|
934 #endif |
|
|
935 |
|
2075
|
936 #if defined (O_CREAT) |
|
3360
|
937 DEFCONSTX ("O_CREAT", SBV_O_CREAT, static_cast<double> (O_CREAT), |
|
3446
|
938 "-*- texinfo -*-\n\ |
|
|
939 @defvr {Built-in Variable} O_CREAT\n\ |
|
|
940 @end defvr"); |
|
2075
|
941 #endif |
|
|
942 |
|
|
943 #if defined (O_EXCL) |
|
3360
|
944 DEFCONSTX ("O_EXCL", SBV_O_EXCL, static_cast<double> (O_EXCL), |
|
3446
|
945 "-*- texinfo -*-\n\ |
|
|
946 @defvr {Built-in Variable} O_EXCL\n\ |
|
|
947 @end defvr"); |
|
2075
|
948 #endif |
|
|
949 |
|
|
950 #if defined (O_NONBLOCK) |
|
3360
|
951 DEFCONSTX ("O_NONBLOCK", SBV_O_NONBLOCK, static_cast<double> (O_NONBLOCK), |
|
3446
|
952 "-*- texinfo -*-\n\ |
|
|
953 @defvr {Built-in Variable} O_NONBLOCK\n\ |
|
|
954 @end defvr"); |
|
2075
|
955 #endif |
|
|
956 |
|
|
957 #if defined (O_RDONLY) |
|
3360
|
958 DEFCONSTX ("O_RDONLY", SBV_O_RDONLY, static_cast<double> (O_RDONLY), |
|
3446
|
959 "-*- texinfo -*-\n\ |
|
|
960 @defvr {Built-in Variable} O_RDONLY\n\ |
|
|
961 @end defvr"); |
|
2075
|
962 #endif |
|
|
963 |
|
|
964 #if defined (O_RDWR) |
|
3360
|
965 DEFCONSTX ("O_RDWR", SBV_O_RDWR, static_cast<double> (O_RDWR), |
|
3446
|
966 "-*- texinfo -*-\n\ |
|
|
967 @defvr {Built-in Variable} O_RDWR\n\ |
|
|
968 @end defvr"); |
|
2075
|
969 #endif |
|
|
970 |
|
2669
|
971 #if defined (O_SYNC) |
|
3360
|
972 DEFCONSTX ("O_SYNC", SBV_O_SYNC, static_cast<double> (O_SYNC), |
|
3446
|
973 "-*- texinfo -*-\n\ |
|
|
974 @defvr {Built-in Variable} O_SYNC\n\ |
|
|
975 @end defvr"); |
|
2669
|
976 #endif |
|
|
977 |
|
2075
|
978 #if defined (O_TRUNC) |
|
3360
|
979 DEFCONSTX ("O_TRUNC", SBV_O_TRUNC, static_cast<double> (O_TRUNC), |
|
3446
|
980 "-*- texinfo -*-\n\ |
|
|
981 @defvr {Built-in Variable} O_TRUNC\n\ |
|
|
982 @end defvr"); |
|
2075
|
983 #endif |
|
|
984 |
|
|
985 #if defined (O_WRONLY) |
|
3360
|
986 DEFCONSTX ("O_WRONLY", SBV_O_WRONLY, static_cast<double> (O_WRONLY), |
|
3446
|
987 "-*- texinfo -*-\n\ |
|
|
988 @defvr {Built-in Variable} O_WRONLY\n\ |
|
|
989 @end defvr"); |
|
2075
|
990 #endif |
|
3446
|
991 |
|
2075
|
992 } |
|
|
993 |
|
|
994 /* |
|
|
995 ;;; Local Variables: *** |
|
|
996 ;;; mode: C++ *** |
|
|
997 ;;; End: *** |
|
|
998 */ |
