Mercurial > octave-nkf
annotate src/syscalls.cc @ 12075:762999a046e9 release-3-2-x
syscalls.cc: Recommend waitpid() in popen2() documentation.
* * *
fix typo in last patch
| author | Rob Mahurin <rob@utk.edu> |
|---|---|
| date | Wed, 26 Aug 2009 08:17:08 +0200 |
| parents | 923c7cb7f13f |
| children |
| rev | line source |
|---|---|
| 2075 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, |
| 8920 | 4 2006, 2007, 2008, 2009 John W. Eaton |
| 2075 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2075 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2075 | 21 |
| 22 */ | |
| 23 | |
| 24 // Thomas Baier <baier@ci.tuwien.ac.at> added the original versions of | |
| 25 // the following functions: | |
| 26 // | |
| 27 // mkfifo unlink waitpid | |
| 28 | |
| 29 #ifdef HAVE_CONFIG_H | |
| 30 #include <config.h> | |
| 31 #endif | |
| 32 | |
| 33 #include <cstdio> | |
| 2669 | 34 #include <cstring> |
| 2075 | 35 |
| 36 #ifdef HAVE_UNISTD_H | |
| 2442 | 37 #ifdef HAVE_SYS_TYPES_H |
| 2075 | 38 #include <sys/types.h> |
| 2442 | 39 #endif |
| 2075 | 40 #include <unistd.h> |
| 41 #endif | |
| 42 | |
| 43 #ifdef HAVE_FCNTL_H | |
| 44 #include <fcntl.h> | |
| 45 #endif | |
| 46 | |
| 2926 | 47 #include "file-ops.h" |
| 48 #include "file-stat.h" | |
| 2937 | 49 #include "oct-syscalls.h" |
| 5547 | 50 #include "oct-uname.h" |
| 2926 | 51 |
| 2075 | 52 #include "defun.h" |
| 53 #include "error.h" | |
| 2078 | 54 #include "gripes.h" |
| 2075 | 55 #include "lo-utils.h" |
| 56 #include "oct-map.h" | |
| 57 #include "oct-obj.h" | |
| 58 #include "oct-stdstrm.h" | |
| 59 #include "oct-stream.h" | |
| 60 #include "sysdep.h" | |
| 61 #include "utils.h" | |
| 2366 | 62 #include "variables.h" |
| 6321 | 63 #include "input.h" |
| 2075 | 64 |
| 65 static Octave_map | |
| 8549 | 66 mk_stat_map (const base_file_stat& fs) |
| 2075 | 67 { |
| 68 Octave_map m; | |
| 69 | |
| 4675 | 70 m.assign ("dev", static_cast<double> (fs.dev ())); |
| 71 m.assign ("ino", fs.ino ()); | |
| 5476 | 72 m.assign ("mode", fs.mode ()); |
| 4675 | 73 m.assign ("modestr", fs.mode_as_string ()); |
| 74 m.assign ("nlink", fs.nlink ()); | |
| 75 m.assign ("uid", fs.uid ()); | |
| 76 m.assign ("gid", fs.gid ()); | |
| 3887 | 77 #if defined (HAVE_STRUCT_STAT_ST_RDEV) |
| 4675 | 78 m.assign ("rdev", static_cast<double> (fs.rdev ())); |
| 2075 | 79 #endif |
| 4675 | 80 m.assign ("size", fs.size ()); |
| 81 m.assign ("atime", fs.atime ()); | |
| 82 m.assign ("mtime", fs.mtime ()); | |
| 83 m.assign ("ctime", fs.ctime ()); | |
| 3887 | 84 #if defined (HAVE_STRUCT_STAT_ST_BLKSIZE) |
| 4675 | 85 m.assign ("blksize", fs.blksize ()); |
| 2075 | 86 #endif |
| 3887 | 87 #if defined (HAVE_STRUCT_STAT_ST_BLOCKS) |
| 4675 | 88 m.assign ("blocks", fs.blocks ()); |
| 2075 | 89 #endif |
| 90 | |
| 91 return m; | |
| 92 } | |
| 93 | |
| 2457 | 94 DEFUN (dup2, args, , |
| 3301 | 95 "-*- texinfo -*-\n\ |
| 96 @deftypefn {Built-in Function} {[@var{fid}, @var{msg}] =} dup2 (@var{old}, @var{new})\n\ | |
| 2669 | 97 Duplicate a file descriptor.\n\ |
| 98 \n\ | |
| 3301 | 99 If successful, @var{fid} is greater than zero and contains the new file\n\ |
| 100 ID. Otherwise, @var{fid} is negative and @var{msg} contains a\n\ | |
| 101 system-dependent error message.\n\ | |
| 102 @end deftypefn") | |
| 2075 | 103 { |
| 2669 | 104 octave_value_list retval; |
| 105 | |
| 3523 | 106 retval(1) = std::string (); |
| 4294 | 107 retval(0) = -1; |
| 2075 | 108 |
| 109 int nargin = args.length (); | |
| 110 | |
| 111 if (nargin == 2) | |
| 112 { | |
| 3341 | 113 octave_stream old_stream |
| 114 = octave_stream_list::lookup (args(0), "dup2"); | |
| 2075 | 115 |
| 3341 | 116 if (! error_state) |
| 2075 | 117 { |
| 3341 | 118 octave_stream new_stream |
| 119 = octave_stream_list::lookup (args(1), "dup2"); | |
| 2075 | 120 |
| 3341 | 121 if (! error_state) |
| 3145 | 122 { |
| 3341 | 123 int i_old = old_stream.file_number (); |
| 124 int i_new = new_stream.file_number (); | |
| 2937 | 125 |
| 3341 | 126 if (i_old >= 0 && i_new >= 0) |
| 127 { | |
| 3523 | 128 std::string msg; |
| 2669 | 129 |
| 3341 | 130 int status = octave_syscalls::dup2 (i_old, i_new, msg); |
| 131 | |
| 4233 | 132 retval(0) = status; |
| 3341 | 133 retval(1) = msg; |
| 134 } | |
| 2075 | 135 } |
| 136 } | |
| 3145 | 137 else |
| 138 error ("dup2: invalid stream"); | |
| 2075 | 139 } |
| 140 else | |
| 5823 | 141 print_usage (); |
| 2075 | 142 |
| 143 return retval; | |
| 144 } | |
| 145 | |
| 2457 | 146 DEFUN (exec, args, , |
| 3301 | 147 "-*- texinfo -*-\n\ |
| 148 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} exec (@var{file}, @var{args})\n\ | |
| 149 Replace current process with a new process. Calling @code{exec} without\n\ | |
| 150 first calling @code{fork} will terminate your current Octave process and\n\ | |
| 151 replace it with the program named by @var{file}. For example,\n\ | |
| 2669 | 152 \n\ |
| 3301 | 153 @example\n\ |
| 154 exec (\"ls\" \"-l\")\n\ | |
| 155 @end example\n\ | |
| 2669 | 156 \n\ |
| 3301 | 157 @noindent\n\ |
| 158 will run @code{ls} and return you to your shell prompt.\n\ | |
| 159 \n\ | |
| 160 If successful, @code{exec} does not return. If @code{exec} does return,\n\ | |
| 161 @var{err} will be nonzero, and @var{msg} will contain a system-dependent\n\ | |
| 162 error message.\n\ | |
| 163 @end deftypefn") | |
| 2075 | 164 { |
| 2669 | 165 octave_value_list retval; |
| 166 | |
| 3523 | 167 retval(1) = std::string (); |
| 4294 | 168 retval(0) = -1; |
| 2075 | 169 |
| 170 int nargin = args.length (); | |
| 171 | |
| 172 if (nargin == 1 || nargin == 2) | |
| 173 { | |
| 3523 | 174 std::string exec_file = args(0).string_value (); |
| 2075 | 175 |
| 176 if (! error_state) | |
| 177 { | |
| 2937 | 178 string_vector exec_args; |
| 2075 | 179 |
| 180 if (nargin == 2) | |
| 181 { | |
| 2937 | 182 string_vector tmp = args(1).all_strings (); |
| 2075 | 183 |
| 184 if (! error_state) | |
| 185 { | |
| 2937 | 186 int len = tmp.length (); |
| 2075 | 187 |
| 2937 | 188 exec_args.resize (len + 1); |
| 2075 | 189 |
| 2937 | 190 exec_args[0] = exec_file; |
| 2075 | 191 |
| 2937 | 192 for (int i = 0; i < len; i++) |
| 193 exec_args[i+1] = tmp[i]; | |
| 2075 | 194 } |
| 195 else | |
| 5138 | 196 error ("exec: arguments must be character strings"); |
| 2075 | 197 } |
| 198 else | |
| 199 { | |
| 2937 | 200 exec_args.resize (1); |
| 2075 | 201 |
| 2937 | 202 exec_args[0] = exec_file; |
| 2075 | 203 } |
| 204 | |
| 205 if (! error_state) | |
| 2669 | 206 { |
| 3523 | 207 std::string msg; |
| 2937 | 208 |
| 209 int status = octave_syscalls::execvp (exec_file, exec_args, msg); | |
| 2669 | 210 |
| 4233 | 211 retval(0) = status; |
| 2937 | 212 retval(1) = msg; |
| 2669 | 213 } |
| 2075 | 214 } |
| 215 else | |
| 216 error ("exec: first argument must be a string"); | |
| 217 } | |
| 218 else | |
| 5823 | 219 print_usage (); |
| 2075 | 220 |
| 221 return retval; | |
| 222 } | |
| 223 | |
| 6321 | 224 DEFUN (popen2, args, , |
| 225 "-*- texinfo -*-\n\ | |
| 6678 | 226 @deftypefn {Built-in Function} {[@var{in}, @var{out}, @var{pid}] =} popen2 (@var{command}, @var{args})\n\ |
| 6321 | 227 Start a subprocess with two-way communication. The name of the process\n\ |
| 228 is given by @var{command}, and @var{args} is an array of strings\n\ | |
| 229 containing options for the command. The file identifiers for the input\n\ | |
| 230 and output streams of the subprocess are returned in @var{in} and\n\ | |
| 231 @var{out}. If execution of the command is successful, @var{pid}\n\ | |
| 232 contains the process ID of the subprocess. Otherwise, @var{pid} is\n\ | |
| 233 @minus{}1.\n\ | |
| 234 \n\ | |
| 235 For example,\n\ | |
| 236 \n\ | |
| 237 @example\n\ | |
| 6923 | 238 [in, out, pid] = popen2 (\"sort\", \"-r\");\n\ |
| 6321 | 239 fputs (in, \"these\\nare\\nsome\\nstrings\\n\");\n\ |
| 240 fclose (in);\n\ | |
| 241 EAGAIN = errno (\"EAGAIN\");\n\ | |
| 242 done = false;\n\ | |
| 243 do\n\ | |
| 244 s = fgets (out);\n\ | |
| 245 if (ischar (s))\n\ | |
| 246 fputs (stdout, s);\n\ | |
| 247 elseif (errno () == EAGAIN)\n\ | |
| 248 sleep (0.1);\n\ | |
| 249 fclear (out);\n\ | |
| 250 else\n\ | |
| 251 done = true;\n\ | |
| 252 endif\n\ | |
| 253 until (done)\n\ | |
| 254 fclose (out);\n\ | |
|
12075
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
255 waitpid (pid);\n\ |
|
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
256 @print{} these\n\ |
| 6321 | 257 @print{} strings\n\ |
|
12075
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
258 @print{} some\n\ |
|
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
259 @print{} are\n\ |
| 6321 | 260 @end example\n\ |
|
12075
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
261 \n\ |
|
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
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parents:
9209
diff
changeset
|
262 Note that @code{popen2}, unlike @code{popen}, will not \"reap\" the\n\ |
|
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
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parents:
9209
diff
changeset
|
263 child process. If you don't use @code{waitpid} to check the child's\n\ |
|
762999a046e9
syscalls.cc: Recommend waitpid() in popen2() documentation.
Rob Mahurin <rob@utk.edu>
parents:
9209
diff
changeset
|
264 exit status, it will linger until Octave exits.\n\ |
| 6321 | 265 @end deftypefn") |
| 266 { | |
| 267 octave_value_list retval; | |
| 268 | |
| 269 retval(2) = -1; | |
| 270 retval(1) = Matrix (); | |
| 271 retval(0) = Matrix (); | |
| 272 | |
| 273 int nargin = args.length (); | |
| 274 | |
| 275 if (nargin >= 1 && nargin <= 3) | |
| 276 { | |
| 277 std::string exec_file = args(0).string_value(); | |
| 278 | |
| 279 if (! error_state) | |
| 280 { | |
| 281 string_vector arg_list; | |
| 282 | |
| 283 if (nargin >= 2) | |
| 284 { | |
| 285 string_vector tmp = args(1).all_strings (); | |
| 286 | |
| 287 if (! error_state) | |
| 288 { | |
| 289 int len = tmp.length (); | |
| 290 | |
| 291 arg_list.resize (len + 1); | |
| 292 | |
| 293 arg_list[0] = exec_file; | |
| 294 | |
| 295 for (int i = 0; i < len; i++) | |
| 296 arg_list[i+1] = tmp[i]; | |
| 297 } | |
| 298 else | |
| 299 error ("popen2: arguments must be character strings"); | |
| 300 } | |
| 301 else | |
| 302 { | |
| 303 arg_list.resize (1); | |
| 304 | |
| 305 arg_list[0] = exec_file; | |
| 306 } | |
| 307 | |
| 308 if (! error_state) | |
| 309 { | |
| 310 bool sync_mode = (nargin == 3 ? args(2).bool_value() : false); | |
| 311 | |
| 312 if (! error_state) | |
| 313 { | |
| 314 int fildes[2]; | |
| 315 std::string msg; | |
| 316 pid_t pid; | |
| 317 | |
| 318 pid = octave_syscalls::popen2 (exec_file, arg_list, sync_mode, fildes, msg, interactive); | |
| 319 if (pid >= 0) | |
| 320 { | |
| 321 FILE *ifile = fdopen (fildes[1], "r"); | |
| 322 FILE *ofile = fdopen (fildes[0], "w"); | |
| 323 | |
| 324 std::string nm; | |
| 325 | |
| 326 octave_stream is = octave_stdiostream::create (nm, ifile, | |
| 327 std::ios::in); | |
| 328 | |
| 329 octave_stream os = octave_stdiostream::create (nm, ofile, | |
| 330 std::ios::out); | |
| 331 | |
| 332 Cell file_ids (1, 2); | |
| 333 | |
| 334 retval(0) = octave_stream_list::insert (os); | |
| 335 retval(1) = octave_stream_list::insert (is); | |
| 336 retval(2) = pid; | |
| 337 } | |
| 338 else | |
| 339 error (msg.c_str ()); | |
| 340 } | |
| 341 } | |
| 342 else | |
| 343 error ("popen2: arguments must be character strings"); | |
| 344 } | |
| 345 else | |
| 346 error ("popen2: first argument must be a string"); | |
| 347 } | |
| 348 else | |
| 349 print_usage (); | |
| 350 | |
| 351 return retval; | |
| 352 } | |
| 353 | |
| 354 /* | |
| 355 | |
| 356 %!test | |
| 357 %! if (isunix()) | |
| 6923 | 358 %! [in, out, pid] = popen2 ("sort", "-r"); |
| 6321 | 359 %! EAGAIN = errno ("EAGAIN"); |
| 360 %! else | |
| 6322 | 361 %! [in, out, pid] = popen2 ("sort", "/R"); |
| 6321 | 362 %! EAGAIN = errno ("EINVAL"); |
| 363 %! endif | |
| 364 %! fputs (in, "these\nare\nsome\nstrings\n"); | |
| 365 %! fclose (in); | |
| 366 %! done = false; | |
| 367 %! str = {}; | |
| 368 %! idx = 0; | |
| 6545 | 369 %! errs = 0; |
| 6321 | 370 %! do |
| 371 %! if (!isunix()) | |
| 372 %! errno (0); | |
| 373 %! endif | |
| 374 %! s = fgets (out); | |
| 375 %! if (ischar (s)) | |
| 376 %! idx++; | |
| 377 %! str{idx} = s; | |
| 378 %! elseif (errno () == EAGAIN) | |
| 6543 | 379 %! fclear (out); |
| 6321 | 380 %! sleep (0.1); |
| 6545 | 381 %! if (++errs == 100) |
| 382 %! done = true; | |
| 383 %! endif | |
| 6321 | 384 %! else |
| 385 %! done = true; | |
| 386 %! endif | |
| 6545 | 387 %! until (done) |
| 6321 | 388 %! fclose (out); |
| 6324 | 389 %! if (isunix()) |
| 6322 | 390 %! assert(str,{"these\n","strings\n","some\n","are\n"}) |
| 391 %! else | |
| 392 %! assert(str,{"these\r\n","strings\r\n","some\r\n","are\r\n"}) | |
| 393 %! end | |
| 6321 | 394 |
| 395 */ | |
| 396 | |
| 2457 | 397 DEFUN (fcntl, args, , |
| 3301 | 398 "-*- texinfo -*-\n\ |
| 399 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} fcntl (@var{fid}, @var{request}, @var{arg})\n\ | |
| 400 Change the properties of the open file @var{fid}. The following values\n\ | |
| 401 may be passed as @var{request}:\n\ | |
| 402 \n\ | |
| 403 @vtable @code\n\ | |
| 404 @item F_DUPFD\n\ | |
| 405 Return a duplicate file descriptor.\n\ | |
| 406 \n\ | |
| 407 @item F_GETFD\n\ | |
| 408 Return the file descriptor flags for @var{fid}.\n\ | |
| 409 \n\ | |
| 410 @item F_SETFD\n\ | |
| 411 Set the file descriptor flags for @var{fid}.\n\ | |
| 412 \n\ | |
| 413 @item F_GETFL\n\ | |
| 414 Return the file status flags for @var{fid}. The following codes may be\n\ | |
| 415 returned (some of the flags may be undefined on some systems).\n\ | |
| 416 \n\ | |
| 417 @vtable @code\n\ | |
| 418 @item O_RDONLY\n\ | |
| 419 Open for reading only.\n\ | |
| 420 \n\ | |
| 421 @item O_WRONLY\n\ | |
| 422 Open for writing only.\n\ | |
| 2669 | 423 \n\ |
| 3301 | 424 @item O_RDWR\n\ |
| 425 Open for reading and writing.\n\ | |
| 426 \n\ | |
| 427 @item O_APPEND\n\ | |
| 428 Append on each write.\n\ | |
| 429 \n\ | |
| 5040 | 430 @item O_CREAT\n\ |
| 431 Create the file if it does not exist.\n\ | |
| 432 \n\ | |
| 3301 | 433 @item O_NONBLOCK\n\ |
| 434 Nonblocking mode.\n\ | |
| 435 \n\ | |
| 436 @item O_SYNC\n\ | |
| 437 Wait for writes to complete.\n\ | |
| 2669 | 438 \n\ |
| 3301 | 439 @item O_ASYNC\n\ |
| 440 Asynchronous I/O.\n\ | |
| 441 @end vtable\n\ | |
| 442 \n\ | |
| 443 @item F_SETFL\n\ | |
| 444 Set the file status flags for @var{fid} to the value specified by\n\ | |
|
9209
923c7cb7f13f
Simplify TeXinfo files by eliminating redundant @iftex followed by @tex construction.
Rik <rdrider0-list@yahoo.com>
parents:
9064
diff
changeset
|
445 @var{arg}. The only flags that can be changed are @w{@code{O_APPEND}} and\n\ |
|
923c7cb7f13f
Simplify TeXinfo files by eliminating redundant @iftex followed by @tex construction.
Rik <rdrider0-list@yahoo.com>
parents:
9064
diff
changeset
|
446 @w{@code{O_NONBLOCK}}.\n\ |
| 3301 | 447 @end vtable\n\ |
| 448 \n\ | |
| 449 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ | |
| 450 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ | |
| 451 system-dependent error message.\n\ | |
| 452 @end deftypefn") | |
| 2075 | 453 { |
| 2669 | 454 octave_value_list retval; |
| 455 | |
| 3523 | 456 retval(1) = std::string (); |
| 4294 | 457 retval(0) = -1; |
| 2075 | 458 |
| 459 int nargin = args.length (); | |
| 460 | |
| 461 if (nargin == 3) | |
| 462 { | |
| 3715 | 463 octave_stream strm = octave_stream_list::lookup (args (0), "fcntl"); |
| 2075 | 464 |
| 3202 | 465 if (! error_state) |
| 2075 | 466 { |
| 3715 | 467 int fid = strm.file_number (); |
| 468 | |
| 469 int req = args(1).int_value (true); | |
| 470 int arg = args(2).int_value (true); | |
| 471 | |
| 472 if (! error_state) | |
| 2669 | 473 { |
| 5775 | 474 // FIXME -- Need better checking here? |
| 3715 | 475 if (fid < 0) |
| 476 error ("fcntl: invalid file id"); | |
| 477 else | |
| 478 { | |
| 479 std::string msg; | |
| 2937 | 480 |
| 3715 | 481 int status = octave_syscalls::fcntl (fid, req, arg, msg); |
| 2669 | 482 |
| 4233 | 483 retval(0) = status; |
| 3715 | 484 retval(1) = msg; |
| 485 } | |
| 2669 | 486 } |
| 2075 | 487 } |
| 488 else | |
| 3202 | 489 error ("fcntl: file id, request, and argument must be integers"); |
| 2075 | 490 } |
| 491 else | |
| 5823 | 492 print_usage (); |
| 2075 | 493 |
| 494 return retval; | |
| 495 } | |
| 496 | |
| 2457 | 497 DEFUN (fork, args, , |
| 3301 | 498 "-*- texinfo -*-\n\ |
| 499 @deftypefn {Built-in Function} {[@var{pid}, @var{msg}] =} fork ()\n\ | |
| 2669 | 500 Create a copy of the current process.\n\ |
| 501 \n\ | |
| 3301 | 502 Fork can return one of the following values:\n\ |
| 503 \n\ | |
| 504 @table @asis\n\ | |
| 505 @item > 0\n\ | |
| 506 You are in the parent process. The value returned from @code{fork} is\n\ | |
| 507 the process id of the child process. You should probably arrange to\n\ | |
| 508 wait for any child processes to exit.\n\ | |
| 509 \n\ | |
| 510 @item 0\n\ | |
| 511 You are in the child process. You can call @code{exec} to start another\n\ | |
| 512 process. If that fails, you should probably call @code{exit}.\n\ | |
| 513 \n\ | |
| 514 @item < 0\n\ | |
| 515 The call to @code{fork} failed for some reason. You must take evasive\n\ | |
| 516 action. A system dependent error message will be waiting in @var{msg}.\n\ | |
| 517 @end table\n\ | |
| 518 @end deftypefn") | |
| 2075 | 519 { |
| 2669 | 520 octave_value_list retval; |
| 521 | |
| 3523 | 522 retval(1) = std::string (); |
| 4294 | 523 retval(0) = -1; |
| 2075 | 524 |
| 525 int nargin = args.length (); | |
| 526 | |
| 527 if (nargin == 0) | |
| 2475 | 528 { |
| 3523 | 529 std::string msg; |
| 2937 | 530 |
| 531 pid_t pid = octave_syscalls::fork (msg); | |
| 2669 | 532 |
| 4233 | 533 retval(0) = pid; |
| 2937 | 534 retval(1) = msg; |
| 2475 | 535 } |
| 2075 | 536 else |
| 5823 | 537 print_usage (); |
| 2075 | 538 |
| 539 return retval; | |
| 540 } | |
| 541 | |
| 2457 | 542 DEFUN (getpgrp, args, , |
| 3301 | 543 "-*- texinfo -*-\n\ |
| 544 @deftypefn {Built-in Function} {pgid =} getpgrp ()\n\ | |
| 545 Return the process group id of the current process.\n\ | |
| 546 @end deftypefn") | |
| 2075 | 547 { |
| 2937 | 548 octave_value_list retval; |
| 549 | |
| 3523 | 550 retval(1) = std::string (); |
| 4294 | 551 retval(0) = -1; |
| 2075 | 552 |
| 553 int nargin = args.length (); | |
| 554 | |
| 555 if (nargin == 0) | |
| 2475 | 556 { |
| 3523 | 557 std::string msg; |
| 2937 | 558 |
| 4233 | 559 retval(0) = octave_syscalls::getpgrp (msg); |
| 2937 | 560 retval(1) = msg; |
| 2475 | 561 } |
| 2075 | 562 else |
| 5823 | 563 print_usage (); |
| 2075 | 564 |
| 565 return retval; | |
| 566 } | |
| 567 | |
| 2457 | 568 DEFUN (getpid, args, , |
| 3301 | 569 "-*- texinfo -*-\n\ |
| 570 @deftypefn {Built-in Function} {pid =} getpid ()\n\ | |
| 571 Return the process id of the current process.\n\ | |
| 572 @end deftypefn") | |
| 2075 | 573 { |
| 4233 | 574 octave_value retval = -1; |
| 2075 | 575 |
| 576 int nargin = args.length (); | |
| 577 | |
| 578 if (nargin == 0) | |
| 2937 | 579 retval = octave_syscalls::getpid (); |
| 2075 | 580 else |
| 5823 | 581 print_usage (); |
| 2075 | 582 |
| 583 return retval; | |
| 584 } | |
| 585 | |
| 2457 | 586 DEFUN (getppid, args, , |
| 3301 | 587 "-*- texinfo -*-\n\ |
| 588 @deftypefn {Built-in Function} {pid =} getppid ()\n\ | |
| 589 Return the process id of the parent process.\n\ | |
| 590 @end deftypefn") | |
| 2075 | 591 { |
| 4233 | 592 octave_value retval = -1; |
| 2075 | 593 |
| 2475 | 594 int nargin = args.length (); |
| 595 | |
| 596 if (nargin == 0) | |
| 2937 | 597 retval = octave_syscalls::getppid (); |
| 2475 | 598 else |
| 5823 | 599 print_usage (); |
| 2475 | 600 |
| 601 return retval; | |
| 602 } | |
| 603 | |
| 604 DEFUN (getegid, args, , | |
| 3301 | 605 "-*- texinfo -*-\n\ |
| 606 @deftypefn {Built-in Function} {egid =} getegid ()\n\ | |
| 607 Return the effective group id of the current process.\n\ | |
| 608 @end deftypefn") | |
| 2475 | 609 { |
| 4233 | 610 octave_value retval = -1; |
| 2475 | 611 |
| 2075 | 612 int nargin = args.length (); |
| 613 | |
| 614 if (nargin == 0) | |
| 4254 | 615 retval = octave_syscalls::getegid (); |
| 2075 | 616 else |
| 5823 | 617 print_usage (); |
| 2475 | 618 |
| 619 return retval; | |
| 620 } | |
| 621 | |
| 622 DEFUN (getgid, args, , | |
| 3301 | 623 "-*- texinfo -*-\n\ |
| 624 @deftypefn {Built-in Function} {gid =} getgid ()\n\ | |
| 625 Return the real group id of the current process.\n\ | |
| 626 @end deftypefn") | |
| 2475 | 627 { |
| 4233 | 628 octave_value retval = -1; |
| 2475 | 629 |
| 630 int nargin = args.length (); | |
| 631 | |
| 632 if (nargin == 0) | |
| 4254 | 633 retval = octave_syscalls::getgid (); |
| 2475 | 634 else |
| 5823 | 635 print_usage (); |
| 2075 | 636 |
| 637 return retval; | |
| 638 } | |
| 639 | |
| 2473 | 640 DEFUN (geteuid, args, , |
| 3301 | 641 "-*- texinfo -*-\n\ |
| 642 @deftypefn {Built-in Function} {euid =} geteuid ()\n\ | |
| 643 Return the effective user id of the current process.\n\ | |
| 644 @end deftypefn") | |
| 2472 | 645 { |
| 4233 | 646 octave_value retval = -1; |
| 2472 | 647 |
| 648 int nargin = args.length (); | |
| 649 | |
| 650 if (nargin == 0) | |
| 4254 | 651 retval = octave_syscalls::geteuid (); |
| 2472 | 652 else |
| 5823 | 653 print_usage (); |
| 2473 | 654 |
| 655 return retval; | |
| 2472 | 656 } |
| 657 | |
| 2473 | 658 DEFUN (getuid, args, , |
| 3301 | 659 "-*- texinfo -*-\n\ |
| 660 @deftypefn {Built-in Function} {uid =} getuid ()\n\ | |
| 661 Return the real user id of the current process.\n\ | |
| 662 @end deftypefn") | |
| 2472 | 663 { |
| 4233 | 664 octave_value retval = -1; |
| 2472 | 665 |
| 666 int nargin = args.length (); | |
| 667 | |
| 668 if (nargin == 0) | |
| 4254 | 669 retval = octave_syscalls::getuid (); |
| 2472 | 670 else |
| 5823 | 671 print_usage (); |
| 2473 | 672 |
| 673 return retval; | |
| 2472 | 674 } |
| 675 | |
| 4294 | 676 DEFUN (kill, args, , |
| 4371 | 677 "-*- texinfo -*-\n\ |
| 4294 | 678 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} kill (@var{pid}, @var{sig})\n\ |
| 679 Send signal @var{sig} to process @var{pid}.\n\ | |
| 680 \n\ | |
| 681 If @var{pid} is positive, then signal @var{sig} is sent to @var{pid}.\n\ | |
| 682 \n\ | |
| 683 If @var{pid} is 0, then signal @var{sig} is sent to every process\n\ | |
| 684 in the process group of the current process.\n\ | |
| 685 \n\ | |
| 686 If @var{pid} is -1, then signal @var{sig} is sent to every process\n\ | |
| 687 except process 1.\n\ | |
| 688 \n\ | |
| 689 If @var{pid} is less than -1, then signal @var{sig} is sent to every\n\ | |
| 690 process in the process group @var{-pid}.\n\ | |
| 691 \n\ | |
| 4371 | 692 If @var{sig} is 0, then no signal is sent, but error checking is still\n\ |
| 4294 | 693 performed.\n\ |
| 694 \n\ | |
| 7001 | 695 Return 0 if successful, otherwise return -1.\n\ |
| 4294 | 696 @end deftypefn") |
| 697 { | |
| 698 octave_value_list retval; | |
| 699 | |
| 700 retval(1) = std::string (); | |
| 701 retval(0) = -1; | |
| 702 | |
| 703 if (args.length () == 2) | |
| 704 { | |
| 705 pid_t pid = args(0).int_value (true); | |
| 706 | |
| 707 if (! error_state) | |
| 708 { | |
| 709 int sig = args(1).int_value (true); | |
| 710 | |
| 711 if (! error_state) | |
| 712 { | |
| 713 std::string msg; | |
| 714 | |
| 715 int status = octave_syscalls::kill (pid, sig, msg); | |
| 716 | |
| 717 retval(1) = msg; | |
| 718 retval(0) = status; | |
| 719 } | |
| 720 } | |
| 721 } | |
| 722 else | |
| 5823 | 723 print_usage (); |
| 4294 | 724 |
| 725 return retval; | |
| 726 } | |
| 727 | |
| 8549 | 728 DEFUN (fstat, args, , |
| 729 "-*- texinfo -*-\n\ | |
| 730 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} fstat (@var{fid})\n\ | |
|
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731 Return information about the open file @var{fid}. See @code{stat}\n\ |
| 8549 | 732 for a description of the contents of @var{info}.\n\ |
| 733 @end deftypefn") | |
| 734 { | |
| 735 octave_value_list retval; | |
| 736 | |
| 737 if (args.length () == 1) | |
| 738 { | |
| 739 int fid = octave_stream_list::get_file_number (args(0)); | |
| 740 | |
| 741 if (! error_state) | |
| 742 { | |
| 743 file_fstat fs (fid); | |
| 744 | |
| 745 if (fs) | |
| 746 { | |
| 747 retval(2) = std::string (); | |
| 748 retval(1) = 0; | |
| 749 retval(0) = octave_value (mk_stat_map (fs)); | |
| 750 } | |
| 751 else | |
| 752 { | |
| 753 retval(2) = fs.error (); | |
| 754 retval(1) = -1; | |
| 755 retval(0) = Matrix (); | |
| 756 } | |
| 757 } | |
| 758 } | |
| 759 else | |
| 760 print_usage (); | |
| 761 | |
| 762 return retval; | |
| 763 } | |
| 764 | |
| 2075 | 765 DEFUN (lstat, args, , |
| 3458 | 766 "-*- texinfo -*-\n\ |
| 767 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} lstat (@var{file})\n\ | |
| 768 See stat.\n\ | |
| 769 @end deftypefn") | |
| 2075 | 770 { |
| 2263 | 771 octave_value_list retval; |
| 2075 | 772 |
| 773 if (args.length () == 1) | |
| 774 { | |
| 5872 | 775 std::string fname = args(0).string_value (); |
| 2075 | 776 |
| 777 if (! error_state) | |
| 778 { | |
| 779 file_stat fs (fname, false); | |
| 780 | |
| 2263 | 781 if (fs) |
| 2262 | 782 { |
| 3523 | 783 retval(2) = std::string (); |
| 4294 | 784 retval(1) = 0; |
| 4233 | 785 retval(0) = mk_stat_map (fs); |
| 2262 | 786 } |
| 787 else | |
| 788 { | |
| 789 retval(2) = fs.error (); | |
| 4294 | 790 retval(1) = -1; |
| 2262 | 791 retval(0) = Matrix (); |
| 792 } | |
| 2075 | 793 } |
| 794 } | |
| 795 else | |
| 5823 | 796 print_usage (); |
| 2075 | 797 |
| 798 return retval; | |
| 799 } | |
| 800 | |
| 3301 | 801 |
| 802 | |
| 2075 | 803 DEFUN (mkfifo, args, , |
| 3345 | 804 "-*- texinfo -*-\n\ |
| 4825 | 805 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} mkfifo (@var{name}, @var{mode})\n\ |
| 4928 | 806 Create a @var{fifo} special file named @var{name} with file mode @var{mode}\n\ |
| 2075 | 807 \n\ |
| 3301 | 808 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
| 809 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ | |
| 810 system-dependent error message.\n\ | |
| 811 @end deftypefn") | |
| 2075 | 812 { |
| 2669 | 813 octave_value_list retval; |
| 814 | |
| 3523 | 815 retval(1) = std::string (); |
| 4294 | 816 retval(0) = -1; |
| 2075 | 817 |
| 818 int nargin = args.length (); | |
| 819 | |
| 820 if (nargin == 2) | |
| 821 { | |
| 822 if (args(0).is_string ()) | |
| 823 { | |
| 3523 | 824 std::string name = args(0).string_value (); |
| 2075 | 825 |
| 826 if (args(1).is_scalar_type ()) | |
| 827 { | |
| 4254 | 828 long mode = args(1).long_value (); |
| 2075 | 829 |
| 4254 | 830 if (! error_state) |
| 831 { | |
| 832 std::string msg; | |
| 833 | |
| 834 int status = file_ops::mkfifo (name, mode, msg); | |
| 2669 | 835 |
| 4254 | 836 retval(0) = status; |
| 2669 | 837 |
| 4254 | 838 if (status < 0) |
| 839 retval(1) = msg; | |
| 840 } | |
| 841 else | |
| 842 error ("mkfifo: invalid MODE"); | |
| 2075 | 843 } |
| 844 else | |
| 845 error ("mkfifo: MODE must be an integer"); | |
| 846 } | |
| 847 else | |
| 848 error ("mkfifo: file name must be a string"); | |
| 849 } | |
| 850 else | |
| 5823 | 851 print_usage (); |
| 2075 | 852 |
| 853 return retval; | |
| 854 } | |
| 855 | |
| 856 DEFUN (pipe, args, , | |
| 3301 | 857 "-*- texinfo -*-\n\ |
| 6321 | 858 @deftypefn {Built-in Function} {[@var{read_fd}, @var{write_fd}, @var{err}, @var{msg}] =} pipe ()\n\ |
| 859 Create a pipe and return the reading and writing ends of the pipe\n\ | |
| 860 into @var{read_fd} and @var{write_fd} respectively.\n\ | |
| 2669 | 861 \n\ |
| 3301 | 862 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
| 863 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ | |
| 864 system-dependent error message.\n\ | |
| 865 @end deftypefn") | |
| 2075 | 866 { |
| 2669 | 867 octave_value_list retval; |
| 868 | |
| 6321 | 869 retval(3) = std::string (); |
| 870 retval(2) = -1; | |
| 4294 | 871 retval(1) = -1; |
| 6321 | 872 retval(0) = -1; |
| 2075 | 873 |
| 874 int nargin = args.length (); | |
| 875 | |
| 876 if (nargin == 0) | |
| 877 { | |
| 878 int fid[2]; | |
| 879 | |
| 3523 | 880 std::string msg; |
| 2937 | 881 |
| 882 int status = octave_syscalls::pipe (fid, msg); | |
| 2669 | 883 |
| 884 if (status < 0) | |
| 6321 | 885 retval(3) = msg; |
| 2669 | 886 else |
| 2075 | 887 { |
| 3340 | 888 FILE *ifile = fdopen (fid[0], "r"); |
| 889 FILE *ofile = fdopen (fid[1], "w"); | |
| 2075 | 890 |
| 4327 | 891 std::string nm; |
| 892 | |
| 893 octave_stream is = octave_stdiostream::create (nm, ifile, | |
| 894 std::ios::in); | |
| 895 | |
| 896 octave_stream os = octave_stdiostream::create (nm, ofile, | |
| 897 std::ios::out); | |
| 2075 | 898 |
| 6321 | 899 retval(1) = octave_stream_list::insert (os); |
| 900 retval(0) = octave_stream_list::insert (is); | |
| 2075 | 901 |
| 6321 | 902 retval(2) = status; |
| 2669 | 903 } |
| 2075 | 904 } |
| 905 else | |
| 5823 | 906 print_usage (); |
| 2075 | 907 |
| 908 return retval; | |
| 909 } | |
| 910 | |
| 911 DEFUN (stat, args, , | |
| 3301 | 912 "-*- texinfo -*-\n\ |
| 913 @deftypefn {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} stat (@var{file})\n\ | |
| 914 @deftypefnx {Built-in Function} {[@var{info}, @var{err}, @var{msg}] =} lstat (@var{file})\n\ | |
| 915 Return a structure @var{s} containing the following information about\n\ | |
| 916 @var{file}.\n\ | |
| 917 \n\ | |
| 918 @table @code\n\ | |
| 919 @item dev\n\ | |
| 920 ID of device containing a directory entry for this file.\n\ | |
| 921 \n\ | |
| 922 @item ino\n\ | |
| 923 File number of the file.\n\ | |
| 924 \n\ | |
| 5476 | 925 @item mode\n\ |
|
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926 File mode, as an integer. Use the functions @w{@code{S_ISREG}},\n\ |
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927 @w{@code{S_ISDIR}}, @w{@code{S_ISCHR}}, @w{@code{S_ISBLK}}, @w{@code{S_ISFIFO}},\n\ |
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928 @w{@code{S_ISLNK}}, or @w{@code{S_ISSOCK}} to extract information from this\n\ |
| 5476 | 929 value.\n\ |
| 930 \n\ | |
| 3301 | 931 @item modestr\n\ |
| 932 File mode, as a string of ten letters or dashes as would be returned by\n\ | |
| 933 @kbd{ls -l}.\n\ | |
| 934 \n\ | |
| 935 @item nlink\n\ | |
| 936 Number of links.\n\ | |
| 2075 | 937 \n\ |
| 3301 | 938 @item uid\n\ |
| 939 User ID of file's owner.\n\ | |
| 940 \n\ | |
| 941 @item gid\n\ | |
| 942 Group ID of file's group.\n\ | |
| 943 \n\ | |
| 944 @item rdev\n\ | |
| 945 ID of device for block or character special files.\n\ | |
| 946 \n\ | |
| 947 @item size\n\ | |
| 948 Size in bytes.\n\ | |
| 949 \n\ | |
| 950 @item atime\n\ | |
| 951 Time of last access in the same form as time values returned from\n\ | |
| 952 @code{time}. @xref{Timing Utilities}.\n\ | |
| 953 \n\ | |
| 954 @item mtime\n\ | |
| 955 Time of last modification in the same form as time values returned from\n\ | |
| 956 @code{time}. @xref{Timing Utilities}.\n\ | |
| 2075 | 957 \n\ |
| 3301 | 958 @item ctime\n\ |
| 959 Time of last file status change in the same form as time values\n\ | |
| 960 returned from @code{time}. @xref{Timing Utilities}.\n\ | |
| 961 \n\ | |
| 962 @item blksize\n\ | |
| 963 Size of blocks in the file.\n\ | |
| 964 \n\ | |
| 965 @item blocks\n\ | |
| 966 Number of blocks allocated for file.\n\ | |
| 967 @end table\n\ | |
| 968 \n\ | |
| 969 If the call is successful @var{err} is 0 and @var{msg} is an empty\n\ | |
| 970 string. If the file does not exist, or some other error occurs, @var{s}\n\ | |
| 971 is an empty matrix, @var{err} is @minus{}1, and @var{msg} contains the\n\ | |
| 972 corresponding system error message.\n\ | |
| 973 \n\ | |
| 974 If @var{file} is a symbolic link, @code{stat} will return information\n\ | |
| 7001 | 975 about the actual file that is referenced by the link. Use @code{lstat}\n\ |
| 3301 | 976 if you want information about the symbolic link itself.\n\ |
| 977 \n\ | |
| 978 For example,\n\ | |
| 2075 | 979 \n\ |
| 3301 | 980 @example\n\ |
| 981 [s, err, msg] = stat (\"/vmlinuz\")\n\ | |
| 982 @result{} s =\n\ | |
| 983 @{\n\ | |
| 984 atime = 855399756\n\ | |
| 985 rdev = 0\n\ | |
| 986 ctime = 847219094\n\ | |
| 987 uid = 0\n\ | |
| 988 size = 389218\n\ | |
| 989 blksize = 4096\n\ | |
| 990 mtime = 847219094\n\ | |
| 991 gid = 6\n\ | |
| 992 nlink = 1\n\ | |
| 993 blocks = 768\n\ | |
| 5476 | 994 mode = -rw-r--r--\n\ |
| 3301 | 995 modestr = -rw-r--r--\n\ |
| 996 ino = 9316\n\ | |
| 997 dev = 2049\n\ | |
| 998 @}\n\ | |
| 999 @result{} err = 0\n\ | |
| 1000 @result{} msg = \n\ | |
| 1001 @end example\n\ | |
| 1002 @end deftypefn") | |
| 2075 | 1003 { |
| 2262 | 1004 octave_value_list retval; |
| 2075 | 1005 |
| 1006 if (args.length () == 1) | |
| 1007 { | |
| 5872 | 1008 std::string fname = args(0).string_value (); |
| 2075 | 1009 |
| 1010 if (! error_state) | |
| 1011 { | |
| 1012 file_stat fs (fname); | |
| 1013 | |
| 1014 if (fs) | |
| 2262 | 1015 { |
| 3523 | 1016 retval(2) = std::string (); |
| 4294 | 1017 retval(1) = 0; |
| 2262 | 1018 retval(0) = octave_value (mk_stat_map (fs)); |
| 1019 } | |
| 1020 else | |
| 1021 { | |
| 1022 retval(2) = fs.error (); | |
| 4294 | 1023 retval(1) = -1; |
| 2262 | 1024 retval(0) = Matrix (); |
| 1025 } | |
| 2075 | 1026 } |
| 1027 } | |
| 1028 else | |
| 5823 | 1029 print_usage (); |
| 2075 | 1030 |
| 1031 return retval; | |
| 1032 } | |
| 1033 | |
| 5476 | 1034 DEFUNX ("S_ISREG", FS_ISREG, args, , |
| 1035 "-*- texinfo -*-\n\ | |
| 1036 @deftypefn {Built-in Function} {} S_ISREG (@var{mode})\n\ | |
| 1037 Return true if @var{mode} corresponds to a regular file. The value\n\ | |
| 1038 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1039 @seealso{stat, lstat}\n\ | |
| 1040 @end deftypefn") | |
| 1041 { | |
| 1042 octave_value retval = false; | |
| 1043 | |
| 1044 if (args.length () == 1) | |
| 1045 { | |
| 1046 double mode = args(0).double_value (); | |
| 1047 | |
| 1048 if (! error_state) | |
| 1049 retval = file_stat::is_reg (static_cast<mode_t> (mode)); | |
| 1050 else | |
| 1051 error ("S_ISREG: invalid mode value"); | |
| 1052 } | |
| 1053 else | |
| 5823 | 1054 print_usage (); |
| 5476 | 1055 |
| 1056 return retval; | |
| 1057 } | |
| 1058 | |
| 1059 DEFUNX ("S_ISDIR", FS_ISDIR, args, , | |
| 1060 "-*- texinfo -*-\n\ | |
| 1061 @deftypefn {Built-in Function} {} S_ISDIR (@var{mode})\n\ | |
| 1062 Return true if @var{mode} corresponds to a directory. The value\n\ | |
| 1063 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1064 @seealso{stat, lstat}\n\ | |
| 1065 @end deftypefn") | |
| 1066 { | |
| 1067 octave_value retval = false; | |
| 1068 | |
| 1069 if (args.length () == 1) | |
| 1070 { | |
| 1071 double mode = args(0).double_value (); | |
| 1072 | |
| 1073 if (! error_state) | |
| 1074 retval = file_stat::is_dir (static_cast<mode_t> (mode)); | |
| 1075 else | |
| 1076 error ("S_ISDIR: invalid mode value"); | |
| 1077 } | |
| 1078 else | |
| 5823 | 1079 print_usage (); |
| 5476 | 1080 |
| 1081 return retval; | |
| 1082 } | |
| 1083 | |
| 1084 DEFUNX ("S_ISCHR", FS_ISCHR, args, , | |
| 1085 "-*- texinfo -*-\n\ | |
| 1086 @deftypefn {Built-in Function} {} S_ISCHR (@var{mode})\n\ | |
| 1087 Return true if @var{mode} corresponds to a character devicey. The value\n\ | |
| 1088 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1089 @seealso{stat, lstat}\n\ | |
| 1090 @end deftypefn") | |
| 1091 { | |
| 1092 octave_value retval = false; | |
| 1093 | |
| 1094 if (args.length () == 1) | |
| 1095 { | |
| 1096 double mode = args(0).double_value (); | |
| 1097 | |
| 1098 if (! error_state) | |
| 1099 retval = file_stat::is_chr (static_cast<mode_t> (mode)); | |
| 1100 else | |
| 1101 error ("S_ISCHR: invalid mode value"); | |
| 1102 } | |
| 1103 else | |
| 5823 | 1104 print_usage (); |
| 5476 | 1105 |
| 1106 return retval; | |
| 1107 } | |
| 1108 | |
| 1109 DEFUNX ("S_ISBLK", FS_ISBLK, args, , | |
| 1110 "-*- texinfo -*-\n\ | |
| 1111 @deftypefn {Built-in Function} {} S_ISBLK (@var{mode})\n\ | |
| 1112 Return true if @var{mode} corresponds to a block device. The value\n\ | |
| 1113 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1114 @seealso{stat, lstat}\n\ | |
| 1115 @end deftypefn") | |
| 1116 { | |
| 1117 octave_value retval = false; | |
| 1118 | |
| 1119 if (args.length () == 1) | |
| 1120 { | |
| 1121 double mode = args(0).double_value (); | |
| 1122 | |
| 1123 if (! error_state) | |
| 1124 retval = file_stat::is_blk (static_cast<mode_t> (mode)); | |
| 1125 else | |
| 1126 error ("S_ISBLK: invalid mode value"); | |
| 1127 } | |
| 1128 else | |
| 5823 | 1129 print_usage (); |
| 5476 | 1130 |
| 1131 return retval; | |
| 1132 } | |
| 1133 | |
| 1134 DEFUNX ("S_ISFIFO", FS_ISFIFO, args, , | |
| 1135 "-*- texinfo -*-\n\ | |
| 1136 @deftypefn {Built-in Function} {} S_ISFIFO (@var{mode})\n\ | |
| 1137 Return true if @var{mode} corresponds to a fifo. The value\n\ | |
| 1138 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1139 @seealso{stat, lstat}\n\ | |
| 1140 @end deftypefn") | |
| 1141 { | |
| 1142 octave_value retval = false; | |
| 1143 | |
| 1144 if (args.length () == 1) | |
| 1145 { | |
| 1146 double mode = args(0).double_value (); | |
| 1147 | |
| 1148 if (! error_state) | |
| 1149 retval = file_stat::is_fifo (static_cast<mode_t> (mode)); | |
| 1150 else | |
| 1151 error ("S_ISFIFO: invalid mode value"); | |
| 1152 } | |
| 1153 else | |
| 5823 | 1154 print_usage (); |
| 5476 | 1155 |
| 1156 return retval; | |
| 1157 } | |
| 1158 | |
| 1159 DEFUNX ("S_ISLNK", FS_ISLNK, args, , | |
| 1160 "-*- texinfo -*-\n\ | |
| 1161 @deftypefn {Built-in Function} {} S_ISLNK (@var{mode})\n\ | |
| 1162 Return true if @var{mode} corresponds to a symbolic link. The value\n\ | |
| 1163 of @var{mode} is assumed to be returned from a call to @code{stat}.\n\ | |
| 1164 @seealso{stat, lstat}\n\ | |
| 1165 @end deftypefn") | |
| 1166 { | |
| 1167 octave_value retval = false; | |
| 1168 | |
| 1169 if (args.length () == 1) | |
| 1170 { | |
| 1171 double mode = args(0).double_value (); | |
| 1172 | |
| 1173 if (! error_state) | |
| 1174 retval = file_stat::is_lnk (static_cast<mode_t> (mode)); | |
| 1175 else | |
| 1176 error ("S_ISLNK: invalid mode value"); | |
| 1177 } | |
| 1178 else | |
| 5823 | 1179 print_usage (); |
| 5476 | 1180 |
| 1181 return retval; | |
| 1182 } | |
| 1183 | |
| 1184 DEFUNX ("S_ISSOCK", FS_ISSOCK, args, , | |
| 1185 "-*- texinfo -*-\n\ | |
| 1186 @deftypefn {Built-in Function} {} S_ISSOCK (@var{mode})\n\ | |
| 1187 @seealso{stat, lstat}\n\ | |
| 1188 @end deftypefn") | |
| 1189 { | |
| 1190 octave_value retval = false; | |
| 1191 | |
| 1192 if (args.length () == 1) | |
| 1193 { | |
| 1194 double mode = args(0).double_value (); | |
| 1195 | |
| 1196 if (! error_state) | |
| 1197 retval = file_stat::is_sock (static_cast<mode_t> (mode)); | |
| 1198 else | |
| 1199 error ("S_ISSOCK: invalid mode value"); | |
| 1200 } | |
| 1201 else | |
| 5823 | 1202 print_usage (); |
| 5476 | 1203 |
| 1204 return retval; | |
| 1205 } | |
| 1206 | |
| 5547 | 1207 DEFUN (uname, args, , |
| 1208 "-*- texinfo -*-\n\ | |
| 1209 @deftypefn {Built-in Function} {[@var{uts}, @var{err}, @var{msg}] =} uname ()\n\ | |
| 1210 Return system information in the structure. For example,\n\ | |
| 1211 \n\ | |
| 1212 @example\n\ | |
| 1213 @group\n\ | |
| 1214 uname ()\n\ | |
| 1215 @result{} @{\n\ | |
| 5656 | 1216 sysname = x86_64\n\ |
| 1217 nodename = segfault\n\ | |
| 1218 release = 2.6.15-1-amd64-k8-smp\n\ | |
| 1219 version = Linux\n\ | |
| 1220 machine = #2 SMP Thu Feb 23 04:57:49 UTC 2006\n\ | |
| 5547 | 1221 @}\n\ |
| 1222 @end group\n\ | |
| 1223 @end example\n\ | |
| 1224 \n\ | |
| 1225 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ | |
| 1226 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ | |
| 1227 system-dependent error message.\n\ | |
| 1228 @end deftypefn") | |
| 1229 { | |
| 1230 octave_value_list retval; | |
| 1231 | |
| 1232 if (args.length () == 0) | |
| 1233 { | |
| 1234 octave_uname sysinfo; | |
| 1235 | |
| 1236 Octave_map m; | |
| 1237 | |
| 1238 m.assign ("sysname", sysinfo.sysname ()); | |
| 1239 m.assign ("nodename", sysinfo.nodename ()); | |
| 1240 m.assign ("release", sysinfo.release ()); | |
| 1241 m.assign ("version", sysinfo.version ()); | |
| 1242 m.assign ("machine", sysinfo.machine ()); | |
| 1243 | |
| 1244 retval(2) = sysinfo.message (); | |
| 1245 retval(1) = sysinfo.error (); | |
| 1246 retval(0) = m; | |
| 1247 } | |
| 1248 else | |
| 5823 | 1249 print_usage (); |
| 5547 | 1250 |
| 1251 return retval; | |
| 1252 } | |
| 1253 | |
| 2075 | 1254 DEFUN (unlink, args, , |
| 3301 | 1255 "-*- texinfo -*-\n\ |
| 1256 @deftypefn {Built-in Function} {[@var{err}, @var{msg}] =} unlink (@var{file})\n\ | |
| 1257 Delete the file named @var{file}.\n\ | |
| 2075 | 1258 \n\ |
| 3301 | 1259 If successful, @var{err} is 0 and @var{msg} is an empty string.\n\ |
| 1260 Otherwise, @var{err} is nonzero and @var{msg} contains a\n\ | |
| 1261 system-dependent error message.\n\ | |
| 1262 @end deftypefn") | |
| 2075 | 1263 { |
| 2669 | 1264 octave_value_list retval; |
| 1265 | |
| 3523 | 1266 retval(1) = std::string (); |
| 4294 | 1267 retval(0) = -1; |
| 2075 | 1268 |
| 1269 int nargin = args.length (); | |
| 1270 | |
| 1271 if (nargin == 1) | |
| 1272 { | |
| 1273 if (args(0).is_string ()) | |
| 1274 { | |
| 3523 | 1275 std::string name = args(0).string_value (); |
| 2075 | 1276 |
| 3523 | 1277 std::string msg; |
| 2669 | 1278 |
| 2926 | 1279 int status = file_ops::unlink (name, msg); |
| 2669 | 1280 |
| 4233 | 1281 retval(0) = status; |
| 2937 | 1282 retval(1) = msg; |
| 2075 | 1283 } |
| 1284 else | |
| 1285 error ("unlink: file name must be a string"); | |
| 1286 } | |
| 1287 else | |
| 5823 | 1288 print_usage (); |
| 2075 | 1289 |
| 1290 return retval; | |
| 1291 } | |
| 1292 | |
| 1293 DEFUN (waitpid, args, , | |
| 3301 | 1294 "-*- texinfo -*-\n\ |
| 5453 | 1295 @deftypefn {Built-in Function} {[@var{pid}, @var{status}, @var{msg}] =} waitpid (@var{pid}, @var{options})\n\ |
| 3301 | 1296 Wait for process @var{pid} to terminate. The @var{pid} argument can be:\n\ |
| 2075 | 1297 \n\ |
| 3301 | 1298 @table @asis\n\ |
| 1299 @item @minus{}1\n\ | |
| 1300 Wait for any child process.\n\ | |
| 2075 | 1301 \n\ |
| 3301 | 1302 @item 0\n\ |
| 1303 Wait for any child process whose process group ID is equal to that of\n\ | |
| 1304 the Octave interpreter process.\n\ | |
| 2075 | 1305 \n\ |
| 3301 | 1306 @item > 0\n\ |
| 1307 Wait for termination of the child process with ID @var{pid}.\n\ | |
| 1308 @end table\n\ | |
| 1309 \n\ | |
| 5453 | 1310 The @var{options} argument can be a bitwise OR of zero or more of\n\ |
| 1311 the following constants:\n\ | |
| 2075 | 1312 \n\ |
| 5453 | 1313 @table @code\n\ |
| 3301 | 1314 @item 0\n\ |
| 1315 Wait until signal is received or a child process exits (this is the\n\ | |
| 1316 default if the @var{options} argument is missing).\n\ | |
| 1317 \n\ | |
| 5453 | 1318 @item WNOHANG\n\ |
| 3301 | 1319 Do not hang if status is not immediately available.\n\ |
| 2075 | 1320 \n\ |
| 5453 | 1321 @item WUNTRACED\n\ |
| 3301 | 1322 Report the status of any child processes that are stopped, and whose\n\ |
| 1323 status has not yet been reported since they stopped.\n\ | |
| 1324 \n\ | |
|
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1325 @item WCONTINUE\n\ |
| 5453 | 1326 Return if a stopped child has been resumed by delivery of @code{SIGCONT}.\n\ |
| 1327 This value may not be meaningful on all systems.\n\ | |
| 3301 | 1328 @end table\n\ |
| 1329 \n\ | |
| 1330 If the returned value of @var{pid} is greater than 0, it is the process\n\ | |
| 1331 ID of the child process that exited. If an error occurs, @var{pid} will\n\ | |
| 1332 be less than zero and @var{msg} will contain a system-dependent error\n\ | |
| 7001 | 1333 message. The value of @var{status} contains additional system-dependent\n\ |
| 5453 | 1334 information about the subprocess that exited.\n\ |
|
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1335 @seealso{WCONTINUE, WCOREDUMP, WEXITSTATUS, WIFCONTINUED, WIFSIGNALED, WIFSTOPPED, WNOHANG, WSTOPSIG, WTERMSIG, WUNTRACED}\n\ |
| 3301 | 1336 @end deftypefn") |
| 2075 | 1337 { |
| 2669 | 1338 octave_value_list retval; |
| 1339 | |
| 5453 | 1340 retval(2) = std::string (); |
| 1341 retval(1) = 0; | |
| 4294 | 1342 retval(0) = -1; |
| 2075 | 1343 |
| 1344 int nargin = args.length (); | |
| 1345 | |
| 1346 if (nargin == 1 || nargin == 2) | |
| 1347 { | |
| 3202 | 1348 pid_t pid = args(0).int_value (true); |
| 2075 | 1349 |
| 1350 if (! error_state) | |
| 1351 { | |
| 3202 | 1352 int options = 0; |
| 2075 | 1353 |
| 3202 | 1354 if (args.length () == 2) |
| 5453 | 1355 options = args(1).int_value (true); |
| 2937 | 1356 |
| 3202 | 1357 if (! error_state) |
| 1358 { | |
| 3523 | 1359 std::string msg; |
| 2669 | 1360 |
| 5453 | 1361 int status = 0; |
| 1362 | |
| 1363 pid_t result = octave_syscalls::waitpid (pid, &status, options, msg); | |
| 3202 | 1364 |
| 5453 | 1365 retval(0) = result; |
| 1366 retval(1) = status; | |
| 1367 retval(2) = msg; | |
| 2075 | 1368 } |
| 5453 | 1369 else |
| 1370 error ("waitpid: OPTIONS must be an integer"); | |
| 2075 | 1371 } |
| 3202 | 1372 else |
| 1373 error ("waitpid: PID must be an integer value"); | |
| 2075 | 1374 } |
| 1375 else | |
| 5823 | 1376 print_usage (); |
| 2075 | 1377 |
| 1378 return retval; | |
| 1379 } | |
| 1380 | |
| 5453 | 1381 DEFUNX ("WIFEXITED", FWIFEXITED, args, , |
| 1382 "-*- texinfo -*-\n\ | |
| 1383 @deftypefn {Built-in Function} {} WIFEXITED (@var{status})\n\ | |
| 1384 Given @var{status} from a call to @code{waitpid}, return true if the\n\ | |
| 1385 child terminated normally.\n\ | |
| 1386 @seealso{waitpid, WEXITSTATUS, WIFSIGNALED, WTERMSIG, WCOREDUMP, WIFSTOPPED, WSTOPSIG, WIFCONTINUED}\n\ | |
| 5646 | 1387 @end deftypefn") |
| 5453 | 1388 { |
| 1389 octave_value retval = 0.0; | |
| 1390 | |
| 1391 #if defined (WIFEXITED) | |
| 1392 if (args.length () == 1) | |
| 1393 { | |
| 1394 int status = args(0).int_value (); | |
| 1395 | |
| 1396 if (! error_state) | |
| 1397 retval = WIFEXITED (status); | |
| 1398 else | |
| 1399 error ("WIFEXITED: expecting integer argument"); | |
| 1400 } | |
| 1401 #else | |
| 1402 warning ("WIFEXITED always returns false in this version of Octave") | |
| 1403 #endif | |
| 1404 | |
| 1405 return retval; | |
| 1406 } | |
| 1407 | |
| 1408 DEFUNX ("WEXITSTATUS", FWEXITSTATUS, args, , | |
| 1409 "-*- texinfo -*-\n\ | |
| 1410 @deftypefn {Built-in Function} {} WEXITSTATUS (@var{status})\n\ | |
| 1411 Given @var{status} from a call to @code{waitpid}, return the exit\n\ | |
| 1412 status of the child. This function should only be employed if\n\ | |
| 1413 @code{WIFEXITED} returned true.\n\ | |
| 1414 @seealso{waitpid, WIFEXITED, WIFSIGNALED, WTERMSIG, WCOREDUMP, WIFSTOPPED, WSTOPSIG, WIFCONTINUED}\n\ | |
| 1415 @end deftypefn") | |
| 1416 { | |
| 1417 octave_value retval = 0.0; | |
| 1418 | |
| 1419 #if defined (WEXITSTATUS) | |
| 1420 if (args.length () == 1) | |
| 1421 { | |
| 1422 int status = args(0).int_value (); | |
| 1423 | |
| 1424 if (! error_state) | |
| 1425 retval = WEXITSTATUS (status); | |
| 1426 else | |
| 1427 error ("WEXITSTATUS: expecting integer argument"); | |
| 1428 } | |
| 1429 #else | |
| 1430 warning ("WEXITSTATUS always returns false in this version of Octave") | |
| 1431 #endif | |
| 1432 | |
| 1433 return retval; | |
| 1434 } | |
| 1435 | |
| 1436 DEFUNX ("WIFSIGNALED", FWIFSIGNALED, args, , | |
| 1437 "-*- texinfo -*-\n\ | |
| 1438 @deftypefn {Built-in Function} {} WIFSIGNALED (@var{status})\n\ | |
| 1439 Given @var{status} from a call to @code{waitpid}, return true if the\n\ | |
| 1440 child process was terminated by a signal.\n\ | |
| 1441 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WTERMSIG, WCOREDUMP, WIFSTOPPED, WSTOPSIG, WIFCONTINUED}\n\ | |
| 1442 @end deftypefn") | |
| 1443 { | |
| 1444 octave_value retval = 0.0; | |
| 1445 | |
| 1446 #if defined (WIFSIGNALED) | |
| 1447 if (args.length () == 1) | |
| 1448 { | |
| 1449 int status = args(0).int_value (); | |
| 1450 | |
| 1451 if (! error_state) | |
| 1452 retval = WIFSIGNALED (status); | |
| 1453 else | |
| 1454 error ("WIFSIGNALED: expecting integer argument"); | |
| 1455 } | |
| 1456 #else | |
| 5455 | 1457 warning ("WIFSIGNALED always returns false in this version of Octave"); |
| 5453 | 1458 #endif |
| 1459 | |
| 1460 return retval; | |
| 1461 } | |
| 1462 | |
| 1463 DEFUNX ("WTERMSIG", FWTERMSIG, args, , | |
| 1464 "-*- texinfo -*-\n\ | |
| 1465 @deftypefn {Built-in Function} {} WTERMSIG (@var{status})\n\ | |
| 1466 Given @var{status} from a call to @code{waitpid}, return the number of\n\ | |
|
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1467 the signal that caused the child process to terminate. This function\n\ |
| 5453 | 1468 should only be employed if @code{WIFSIGNALED} returned true.\n\ |
| 1469 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WIFSIGNALED, WCOREDUMP, WIFSTOPPED, WSTOPSIG, WIFCONTINUED}\n\ | |
| 1470 @end deftypefn") | |
| 1471 { | |
| 1472 octave_value retval = 0.0; | |
| 1473 | |
| 1474 #if defined (WTERMSIG) | |
| 1475 if (args.length () == 1) | |
| 1476 { | |
| 1477 int status = args(0).int_value (); | |
| 1478 | |
| 1479 if (! error_state) | |
| 1480 retval = WTERMSIG (status); | |
| 1481 else | |
| 1482 error ("WTERMSIG: expecting integer argument"); | |
| 1483 } | |
| 1484 #else | |
| 5455 | 1485 warning ("WTERMSIG always returns false in this version of Octave"); |
| 5453 | 1486 #endif |
| 1487 | |
| 1488 return retval; | |
| 1489 } | |
| 1490 | |
| 1491 DEFUNX ("WCOREDUMP", FWCOREDUMP, args, , | |
| 1492 "-*- texinfo -*-\n\ | |
| 1493 @deftypefn {Built-in Function} {} WCOREDUMP (@var{status})\n\ | |
| 1494 Given @var{status} from a call to @code{waitpid}, return true if the\n\ | |
| 1495 child produced a core dump. This function should only be employed if\n\ | |
| 1496 @code{WIFSIGNALED} returned true. The macro used to implement this\n\ | |
| 1497 function is not specified in POSIX.1-2001 and is not available on some\n\ | |
| 1498 Unix implementations (e.g., AIX, SunOS).\n\ | |
| 1499 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WIFSIGNALED, WTERMSIG, WIFSTOPPED, WSTOPSIG, WIFCONTINUED}\n\ | |
| 1500 @end deftypefn") | |
| 1501 { | |
| 1502 octave_value retval = 0.0; | |
| 1503 | |
| 1504 #if defined (WCOREDUMP) | |
| 1505 if (args.length () == 1) | |
| 1506 { | |
| 1507 int status = args(0).int_value (); | |
| 1508 | |
| 1509 if (! error_state) | |
| 1510 retval = WCOREDUMP (status); | |
| 1511 else | |
| 1512 error ("WCOREDUMP: expecting integer argument"); | |
| 1513 } | |
| 1514 #else | |
| 5455 | 1515 warning ("WCOREDUMP always returns false in this version of Octave"); |
| 5453 | 1516 #endif |
| 1517 | |
| 1518 return retval; | |
| 1519 } | |
| 1520 | |
| 1521 DEFUNX ("WIFSTOPPED", FWIFSTOPPED, args, , | |
| 1522 "-*- texinfo -*-\n\ | |
| 1523 @deftypefn {Built-in Function} {} WIFSTOPPED (@var{status})\n\ | |
| 1524 Given @var{status} from a call to @code{waitpid}, return true if the\n\ | |
| 1525 child process was stopped by delivery of a signal; this is only\n\ | |
| 1526 possible if the call was done using @code{WUNTRACED} or when the child\n\ | |
| 1527 is being traced (see ptrace(2)).\n\ | |
| 1528 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WIFSIGNALED, WTERMSIG, WCOREDUMP, WSTOPSIG, WIFCONTINUED}\n\ | |
| 1529 @end deftypefn") | |
| 1530 { | |
| 1531 octave_value retval = 0.0; | |
| 1532 | |
| 1533 #if defined (WIFSTOPPED) | |
| 1534 if (args.length () == 1) | |
| 1535 { | |
| 1536 int status = args(0).int_value (); | |
| 1537 | |
| 1538 if (! error_state) | |
| 1539 retval = WIFSTOPPED (status); | |
| 1540 else | |
| 1541 error ("WIFSTOPPED: expecting integer argument"); | |
| 1542 } | |
| 1543 #else | |
| 5455 | 1544 warning ("WIFSTOPPED always returns false in this version of Octave"); |
| 5453 | 1545 #endif |
| 1546 | |
| 1547 return retval; | |
| 1548 } | |
| 1549 | |
| 1550 DEFUNX ("WSTOPSIG", FWSTOPSIG, args, , | |
| 1551 "-*- texinfo -*-\n\ | |
| 1552 @deftypefn {Built-in Function} {} WSTOPSIG (@var{status})\n\ | |
| 1553 Given @var{status} from a call to @code{waitpid}, return the number of\n\ | |
| 1554 the signal which caused the child to stop. This function should only\n\ | |
| 1555 be employed if @code{WIFSTOPPED} returned true.\n\ | |
| 1556 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WIFSIGNALED, WTERMSIG, WCOREDUMP, WIFSTOPPED, WIFCONTINUED}\n\ | |
| 1557 @end deftypefn") | |
| 1558 { | |
| 1559 octave_value retval = 0.0; | |
| 1560 | |
| 1561 #if defined (WSTOPSIG) | |
| 1562 if (args.length () == 1) | |
| 1563 { | |
| 1564 int status = args(0).int_value (); | |
| 1565 | |
| 1566 if (! error_state) | |
| 1567 retval = WSTOPSIG (status); | |
| 1568 else | |
| 1569 error ("WSTOPSIG: expecting integer argument"); | |
| 1570 } | |
| 1571 #else | |
| 5455 | 1572 warning ("WSTOPSIG always returns false in this version of Octave"); |
| 5453 | 1573 #endif |
| 1574 | |
| 1575 return retval; | |
| 1576 } | |
| 1577 | |
| 1578 DEFUNX ("WIFCONTINUED", FWIFCONTINUED, args, , | |
| 1579 "-*- texinfo -*-\n\ | |
| 1580 @deftypefn {Built-in Function} {} WIFCONTINUED (@var{status})\n\ | |
| 1581 Given @var{status} from a call to @code{waitpid}, return true if the\n\ | |
| 1582 child process was resumed by delivery of @code{SIGCONT}.\n\ | |
| 1583 @seealso{waitpid, WIFEXITED, WEXITSTATUS, WIFSIGNALED, WTERMSIG, WCOREDUMP, WIFSTOPPED, WSTOPSIG}\n\ | |
| 1584 @end deftypefn") | |
| 1585 { | |
| 1586 octave_value retval = 0.0; | |
| 1587 | |
| 1588 #if defined (WIFCONTINUED) | |
| 1589 if (args.length () == 1) | |
| 1590 { | |
| 1591 int status = args(0).int_value (); | |
| 1592 | |
| 1593 if (! error_state) | |
| 1594 retval = WIFCONTINUED (status); | |
| 1595 else | |
| 1596 error ("WIFCONTINUED: expecting integer argument"); | |
| 1597 } | |
| 1598 #else | |
| 5455 | 1599 warning ("WIFCONTINUED always returns false in this version of Octave"); |
| 5453 | 1600 #endif |
| 1601 | |
| 1602 return retval; | |
| 1603 } | |
| 1604 | |
| 5138 | 1605 DEFUN (canonicalize_file_name, args, , |
| 1606 "-*- texinfo -*-\n\ | |
| 1607 @deftypefn {Built-in Function} {[@var{cname}, @var{status}, @var{msg}]} canonicalize_file_name (@var{name})\n\ | |
| 1608 Return the canonical name of file @var{name}.\n\ | |
| 1609 @end deftypefn") | |
| 1610 { | |
| 1611 octave_value_list retval; | |
| 1612 | |
| 1613 if (args.length () == 1) | |
| 1614 { | |
| 1615 std::string name = args(0).string_value (); | |
| 1616 | |
| 1617 if (! error_state) | |
| 1618 { | |
| 1619 std::string msg; | |
| 1620 | |
| 1621 std::string result = file_ops::canonicalize_file_name (name, msg); | |
| 1622 | |
| 1623 retval(2) = msg; | |
| 1624 retval(1) = msg.empty () ? 0 : -1; | |
| 1625 retval(0) = result; | |
| 1626 } | |
| 1627 else | |
| 1628 error ("canonicalize_file_name: argument must be a character string"); | |
| 1629 } | |
| 1630 else | |
| 5823 | 1631 print_usage (); |
| 5138 | 1632 |
| 1633 return retval; | |
| 1634 } | |
| 1635 | |
| 5749 | 1636 static octave_value |
| 7924 | 1637 const_value (const octave_value_list& args, int val) |
| 5749 | 1638 { |
| 1639 octave_value retval; | |
| 1640 | |
| 1641 int nargin = args.length (); | |
| 1642 | |
| 1643 if (nargin == 0) | |
| 1644 retval = val; | |
| 1645 else | |
| 5823 | 1646 print_usage (); |
| 5749 | 1647 |
| 1648 return retval; | |
| 1649 } | |
| 1650 | |
| 2075 | 1651 #if !defined (O_NONBLOCK) && defined (O_NDELAY) |
| 1652 #define O_NONBLOCK O_NDELAY | |
| 1653 #endif | |
| 1654 | |
| 5749 | 1655 #if defined (F_DUPFD) |
| 1656 DEFUNX ("F_DUPFD", FF_DUPFD, args, , | |
| 1657 "-*- texinfo -*-\n\ | |
| 1658 @deftypefn {Built-in Function} {} F_DUPFD ()\n\ | |
| 1659 Return the value required to request that @code{fcntl} return a\n\ | |
| 1660 duplicate file descriptor.\n\ | |
| 1661 @seealso{fcntl, F_GETFD, F_GETFL, F_SETFD, F_SETFL}\n\ | |
| 1662 @end deftypefn") | |
| 2075 | 1663 { |
| 7924 | 1664 return const_value (args, F_DUPFD); |
| 5749 | 1665 } |
| 2075 | 1666 #endif |
| 1667 | |
| 1668 #if defined (F_GETFD) | |
| 5749 | 1669 DEFUNX ("F_GETFD", FF_GETFD, args, , |
| 1670 "-*- texinfo -*-\n\ | |
| 1671 @deftypefn {Built-in Function} {} F_GETFD ()\n\ | |
| 1672 Return the value required to request that @code{fcntl} to return the\n\ | |
| 1673 file descriptor flags.\n\ | |
| 5333 | 1674 @seealso{fcntl, F_DUPFD, F_GETFL, F_SETFD, F_SETFL}\n\ |
| 5749 | 1675 @end deftypefn") |
| 1676 { | |
| 7924 | 1677 return const_value (args, F_GETFD); |
| 5749 | 1678 } |
| 2075 | 1679 #endif |
| 1680 | |
| 1681 #if defined (F_GETFL) | |
| 5749 | 1682 DEFUNX ("F_GETFL", FF_GETFL, args, , |
| 1683 "-*- texinfo -*-\n\ | |
| 1684 @deftypefn {Built-in Function} {} F_GETFL ()\n\ | |
| 1685 Return the value required to request that @code{fcntl} to return the\n\ | |
| 1686 file status flags.\n\ | |
| 5333 | 1687 @seealso{fcntl, F_DUPFD, F_GETFD, F_SETFD, F_SETFL}\n\ |
| 5749 | 1688 @end deftypefn") |
| 1689 { | |
| 7924 | 1690 return const_value (args, F_GETFL); |
| 5749 | 1691 } |
| 2075 | 1692 #endif |
| 1693 | |
| 1694 #if defined (F_SETFD) | |
| 5749 | 1695 DEFUNX ("F_SETFD", FF_SETFD, args, , |
| 1696 "-*- texinfo -*-\n\ | |
| 1697 @deftypefn {Built-in Function} {} F_SETFD ()\n\ | |
| 1698 Return the value required to request that @code{fcntl} to set the file\n\ | |
| 1699 descriptor flags.\n\ | |
| 5333 | 1700 @seealso{fcntl, F_DUPFD, F_GETFD, F_GETFL, F_SETFL}\n\ |
| 5749 | 1701 @end deftypefn") |
| 1702 { | |
| 7924 | 1703 return const_value (args, F_SETFD); |
| 5749 | 1704 } |
| 2075 | 1705 #endif |
| 1706 | |
| 1707 #if defined (F_SETFL) | |
| 5749 | 1708 DEFUNX ("F_SETFL", FF_SETFL, args, , |
| 1709 "-*- texinfo -*-\n\ | |
| 1710 @deftypefn {Built-in Function} {} F_SETFL ()\n\ | |
| 1711 Return the value required to request that @code{fcntl} to set the file\n\ | |
| 1712 status flags.\n\ | |
| 5333 | 1713 @seealso{fcntl, F_DUPFD, F_GETFD, F_GETFL, F_SETFD}\n\ |
| 5749 | 1714 @end deftypefn") |
| 1715 { | |
| 7924 | 1716 return const_value (args, F_SETFL); |
| 5749 | 1717 } |
| 2075 | 1718 #endif |
| 1719 | |
| 1720 #if defined (O_APPEND) | |
| 5749 | 1721 DEFUNX ("O_APPEND", FO_APPEND, args, , |
| 1722 "-*- texinfo -*-\n\ | |
| 1723 @deftypefn {Built-in Function} {} O_APPEND ()\n\ | |
| 1724 Return the numerical value of the file status flag that may be\n\ | |
| 1725 returned by @code{fcntl} to indicate each write operation appends,\n\ | |
|
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|
1726 or that may be passed to @code{fcntl} to set the write mode to append.\\n\ |
| 5333 | 1727 @seealso{fcntl, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1728 @end deftypefn") |
| 1729 { | |
| 7924 | 1730 return const_value (args, O_APPEND); |
| 5749 | 1731 } |
| 2075 | 1732 #endif |
| 1733 | |
| 2669 | 1734 #if defined (O_ASYNC) |
| 5749 | 1735 DEFUNX ("O_ASYNC", FO_ASYNC, args, , |
| 1736 "-*- texinfo -*-\n\ | |
| 1737 @deftypefn {Built-in Function} {} O_ASYNC ()\n\ | |
| 1738 Return the numerical value of the file status flag that may be\n\ | |
| 1739 returned by @code{fcntl} to indicate asynchronous I/O.\n\ | |
| 5333 | 1740 @seealso{fcntl, O_APPEND, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1741 @end deftypefn") |
| 1742 { | |
| 7924 | 1743 return const_value (args, O_ASYNC); |
| 5749 | 1744 } |
| 2669 | 1745 #endif |
| 1746 | |
| 2075 | 1747 #if defined (O_CREAT) |
| 5749 | 1748 DEFUNX ("O_CREAT", FO_CREAT, args, , |
| 1749 "-*- texinfo -*-\n\ | |
| 1750 @deftypefn {Built-in Function} {} O_CREAT ()\n\ | |
| 1751 Return the numerical value of the file status flag that may be\n\ | |
| 1752 returned by @code{fcntl} to indicate that a file should be\n\ | |
| 1753 created if it does not exist.\n\ | |
| 5333 | 1754 @seealso{fcntl, O_APPEND, O_ASYNC, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1755 @end deftypefn") |
| 1756 { | |
| 7924 | 1757 return const_value (args, O_CREAT); |
| 5749 | 1758 } |
| 2075 | 1759 #endif |
| 1760 | |
| 1761 #if defined (O_EXCL) | |
| 5749 | 1762 DEFUNX ("O_EXCL", FO_EXCL, args, , |
| 1763 "-*- texinfo -*-\n\ | |
| 1764 @deftypefn {Built-in Function} {} O_EXCL ()\n\ | |
| 1765 Return the numerical value of the file status flag that may be\n\ | |
| 1766 returned by @code{fcntl} to indicate that file locking is used.\n\ | |
| 5333 | 1767 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1768 @end deftypefn") |
| 1769 { | |
| 7924 | 1770 return const_value (args, O_EXCL); |
| 5749 | 1771 } |
| 2075 | 1772 #endif |
| 1773 | |
| 1774 #if defined (O_NONBLOCK) | |
| 5749 | 1775 DEFUNX ("O_NONBLOCK", FO_NONBLOCK, args, , |
| 1776 "-*- texinfo -*-\n\ | |
| 1777 @deftypefn {Built-in Function} {} O_NONBLOCK ()\n\ | |
| 1778 Return the numerical value of the file status flag that may be\n\ | |
| 1779 returned by @code{fcntl} to indicate that non-blocking I/O is in use,\n\ | |
| 1780 or that may be passsed to @code{fcntl} to set non-blocking I/O.\n\ | |
| 5333 | 1781 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1782 @end deftypefn") |
| 1783 { | |
| 7924 | 1784 return const_value (args, O_NONBLOCK); |
| 5749 | 1785 } |
| 2075 | 1786 #endif |
| 1787 | |
| 1788 #if defined (O_RDONLY) | |
| 5749 | 1789 DEFUNX ("O_RDONLY", FO_RDONLY, args, , |
| 1790 "-*- texinfo -*-\n\ | |
| 1791 @deftypefn {Built-in Function} {} O_RDONLY ()\n\ | |
| 1792 Return the numerical value of the file status flag that may be\n\ | |
| 1793 returned by @code{fcntl} to indicate that a file is open for\n\ | |
| 1794 reading only.\n\ | |
| 5333 | 1795 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1796 @end deftypefn") |
| 1797 { | |
| 7924 | 1798 return const_value (args, O_RDONLY); |
| 5749 | 1799 } |
| 2075 | 1800 #endif |
| 1801 | |
| 1802 #if defined (O_RDWR) | |
| 5749 | 1803 DEFUNX ("O_RDWR", FO_RDWR, args, , |
| 1804 "-*- texinfo -*-\n\ | |
| 1805 @deftypefn {Built-in Function} {} O_RDWR ()\n\ | |
| 1806 Return the numerical value of the file status flag that may be\n\ | |
| 1807 returned by @code{fcntl} to indicate that a file is open for both\n\ | |
| 1808 reading and writing.\n\ | |
| 5333 | 1809 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_SYNC, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1810 @end deftypefn") |
| 1811 { | |
| 7924 | 1812 return const_value (args, O_RDWR); |
| 5749 | 1813 } |
| 2075 | 1814 #endif |
| 1815 | |
| 2669 | 1816 #if defined (O_SYNC) |
| 5749 | 1817 DEFUNX ("O_SYNC", FO_SYNC, args, , |
| 1818 "-*- texinfo -*-\n\ | |
| 1819 @deftypefn {Built-in Function} {} O_SYNC ()\n\ | |
| 1820 Return the numerical value of the file status flag that may be\n\ | |
| 1821 returned by @code{fcntl} to indicate that a file is open for\n\ | |
| 1822 synchronous I/O.\n\ | |
| 5333 | 1823 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_TRUNC, O_WRONLY}\n\ |
| 5749 | 1824 @end deftypefn") |
| 1825 { | |
| 7924 | 1826 return const_value (args, O_SYNC); |
| 5749 | 1827 } |
| 2669 | 1828 #endif |
| 1829 | |
| 2075 | 1830 #if defined (O_TRUNC) |
| 5749 | 1831 DEFUNX ("O_TRUNC", FO_TRUNC, args, , |
| 1832 "-*- texinfo -*-\n\ | |
| 1833 @deftypefn {Built-in Variable} O_TRUNC ()\n\ | |
| 1834 Return the numerical value of the file status flag that may be\n\ | |
| 1835 returned by @code{fcntl} to indicate that if file exists, it should\n\ | |
| 1836 be truncated when writing.\n\ | |
| 5333 | 1837 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_WRONLY}\n\ |
| 5749 | 1838 @end deftypefn") |
| 1839 { | |
| 7924 | 1840 return const_value (args, O_TRUNC); |
| 5749 | 1841 } |
| 2075 | 1842 #endif |
| 1843 | |
| 1844 #if defined (O_WRONLY) | |
| 5749 | 1845 DEFUNX ("O_WRONLY", FO_WRONLY, args, , |
| 1846 "-*- texinfo -*-\n\ | |
| 1847 @deftypefn {Built-in Function} {} O_WRONLY ()\n\ | |
| 1848 Return the numerical value of the file status flag that may be\n\ | |
| 1849 returned by @code{fcntl} to indicate that a file is open for\n\ | |
| 1850 writing only.\n\ | |
| 5333 | 1851 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC}\n\ |
| 5749 | 1852 @end deftypefn") |
| 1853 { | |
| 7924 | 1854 return const_value (args, O_WRONLY); |
| 5749 | 1855 } |
| 2075 | 1856 #endif |
| 3446 | 1857 |
| 5453 | 1858 #if !defined (WNOHANG) |
| 1859 #define WNOHANG 0 | |
| 1860 #endif | |
| 1861 | |
| 5749 | 1862 DEFUNX ("WNOHANG", FWNOHANG, args, , |
| 1863 "-*- texinfo -*-\n\ | |
| 1864 @deftypefn {Built-in Function} {} WNOHANG ()\n\ | |
| 1865 Return the numerical value of the option argument that may be\n\ | |
| 1866 passed to @code{waitpid} to indicate that it should return its\n\ | |
| 1867 status immediately instead of waiting for a process to exit.\n\ | |
| 5453 | 1868 @seealso{waitpid, WUNTRACED, WCONTINUE}\n\ |
| 5749 | 1869 @end deftypefn") |
| 1870 { | |
| 7924 | 1871 return const_value (args, WNOHANG); |
| 5749 | 1872 } |
| 5453 | 1873 |
| 1874 #if !defined (WUNTRACED) | |
| 1875 #define WUNTRACED 0 | |
| 1876 #endif | |
| 1877 | |
| 5749 | 1878 DEFUNX ("WUNTRACED", FWUNTRACED, args, , |
| 1879 "-*- texinfo -*-\n\ | |
| 1880 @deftypefn {Built-in Function} {} WUNTRACED ()\n\ | |
| 1881 Return the numerical value of the option argument that may be\n\ | |
| 1882 passed to @code{waitpid} to indicate that it should also return\n\ | |
| 1883 if the child process has stopped but is not traced via the\n\ | |
| 1884 @code{ptrace} system call\n\ | |
| 5453 | 1885 @seealso{waitpid, WNOHANG, WCONTINUE}\n\ |
| 5749 | 1886 @end deftypefn") |
| 1887 { | |
| 7924 | 1888 return const_value (args, WUNTRACED); |
| 5749 | 1889 } |
| 5453 | 1890 |
| 1891 #if !defined (WCONTINUE) | |
| 1892 #define WCONTINUE 0 | |
| 1893 #endif | |
| 1894 | |
| 5749 | 1895 DEFUNX ("WCONTINUE", FWCONTINUE, args, , |
| 1896 "-*- texinfo -*-\n\ | |
| 1897 @deftypefn {Built-in Function} WCONINTUE ()\n\ | |
| 1898 Return the numerical value of the option argument that may be\n\ | |
| 1899 passed to @code{waitpid} to indicate that it should also return\n\ | |
| 1900 if a stopped child has been resumed by delivery of a @code{SIGCONT}\n\ | |
| 1901 signal.\n\ | |
| 5453 | 1902 @seealso{waitpid, WNOHANG, WUNTRACED}\n\ |
| 5749 | 1903 @end deftypefn") |
| 1904 { | |
| 7924 | 1905 return const_value (args, WCONTINUE); |
| 2075 | 1906 } |
| 1907 | |
| 1908 /* | |
| 1909 ;;; Local Variables: *** | |
| 1910 ;;; mode: C++ *** | |
| 1911 ;;; End: *** | |
| 1912 */ |