Mercurial > octave-nkf
annotate liboctave/oct-syscalls.cc @ 10454:79a56d0a6a0d ss-3-3-51
version is now 3.3.51
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 24 Mar 2010 16:27:05 -0400 |
| parents | 479cc8a0a846 |
| children | fd0a3ac60b0e |
| rev | line source |
|---|---|
| 2941 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2005, 2006, 2007 |
| 4 John W. Eaton | |
| 2941 | 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. | |
| 2941 | 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/>. | |
| 2941 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include <cerrno> | |
| 6482 | 29 #include <cstdlib> |
| 2941 | 30 |
| 31 #include <string.h> | |
| 32 | |
| 33 #include <sys/types.h> | |
| 34 #include <unistd.h> | |
| 35 | |
| 36 #include <fcntl.h> | |
| 37 | |
| 4299 | 38 // We can't use csignal as kill is not in the std namespace, and picky |
| 39 // compiler runtimes will also exclude it from global scope as well. | |
| 40 | |
| 41 #include <signal.h> | |
| 42 | |
| 5453 | 43 #include "lo-utils.h" |
| 6321 | 44 #include "lo-sysdep.h" |
| 2941 | 45 #include "oct-syscalls.h" |
| 46 #include "str-vec.h" | |
| 47 | |
| 48 #define NOT_SUPPORTED(nm) \ | |
| 4062 | 49 nm ": not supported on this system" |
| 2941 | 50 |
| 51 int | |
| 52 octave_syscalls::dup2 (int old_fd, int new_fd) | |
| 53 { | |
| 3504 | 54 std::string msg; |
| 2941 | 55 return dup2 (old_fd, new_fd, msg); |
| 56 } | |
| 57 | |
| 58 int | |
| 3504 | 59 octave_syscalls::dup2 (int old_fd, int new_fd, std::string& msg) |
| 2941 | 60 { |
| 3504 | 61 msg = std::string (); |
| 2941 | 62 |
| 63 int status = -1; | |
| 64 | |
| 65 #if defined (HAVE_DUP2) | |
| 10411 | 66 status = gnulib::dup2 (old_fd, new_fd); |
| 2941 | 67 |
| 68 if (status < 0) | |
| 10411 | 69 msg = gnulib::strerror (errno); |
| 2941 | 70 #else |
| 71 msg = NOT_SUPPORTED ("dup2"); | |
| 72 #endif | |
| 73 | |
| 74 return status; | |
| 75 } | |
| 76 | |
| 77 int | |
| 3504 | 78 octave_syscalls::execvp (const std::string& file, const string_vector& argv) |
| 2941 | 79 { |
| 3504 | 80 std::string msg; |
| 2941 | 81 return execvp (file, argv, msg); |
| 82 } | |
| 83 | |
| 84 int | |
| 3504 | 85 octave_syscalls::execvp (const std::string& file, const string_vector& args, |
|
10314
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untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
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86 std::string& msg) |
| 2941 | 87 { |
| 3504 | 88 msg = std::string (); |
| 2941 | 89 |
| 90 int status = -1; | |
| 91 | |
| 92 #if defined (HAVE_EXECVP) | |
| 93 char **argv = args.c_str_vec (); | |
| 94 | |
| 95 status = ::execvp (file.c_str (), argv); | |
| 96 | |
| 97 string_vector::delete_c_str_vec (argv); | |
| 98 | |
| 99 if (status < 0) | |
| 10411 | 100 msg = gnulib::strerror (errno); |
| 2941 | 101 #else |
| 102 msg = NOT_SUPPORTED ("execvp"); | |
| 103 #endif | |
| 104 | |
| 105 return status; | |
| 106 } | |
| 107 | |
| 108 pid_t | |
| 3504 | 109 octave_syscalls::fork (std::string& msg) |
| 2941 | 110 { |
| 111 pid_t status = -1; | |
| 112 | |
| 113 #if defined (HAVE_FORK) | |
| 114 status = ::fork (); | |
| 115 | |
| 116 if (status < 0) | |
| 10411 | 117 msg = gnulib::strerror (errno); |
| 2941 | 118 #else |
| 119 msg = NOT_SUPPORTED ("fork"); | |
| 120 #endif | |
| 121 | |
| 122 return status; | |
| 123 } | |
| 124 | |
| 125 pid_t | |
| 3504 | 126 octave_syscalls::vfork (std::string& msg) |
| 3147 | 127 { |
| 128 pid_t status = -1; | |
| 129 | |
| 130 #if defined (HAVE_VFORK) || defined (HAVE_FORK) | |
| 131 #if defined (HAVE_VFORK) | |
| 132 status = ::vfork (); | |
| 133 #else | |
| 3148 | 134 status = ::fork (); |
| 3147 | 135 #endif |
| 136 | |
| 137 if (status < 0) | |
| 10411 | 138 msg = gnulib::strerror (errno); |
| 3147 | 139 #else |
| 140 msg = NOT_SUPPORTED ("vfork"); | |
| 141 #endif | |
| 142 | |
| 143 return status; | |
| 144 } | |
| 145 | |
| 146 pid_t | |
| 3504 | 147 octave_syscalls::getpgrp (std::string& msg) |
| 2941 | 148 { |
| 149 pid_t status = -1; | |
| 150 | |
| 151 #if defined (HAVE_GETPGRP) | |
| 152 status = ::getpgrp (); | |
| 153 | |
| 154 if (status < 0) | |
| 10411 | 155 msg = gnulib::strerror (errno); |
| 2941 | 156 #else |
| 157 msg = NOT_SUPPORTED ("getpgrp"); | |
| 158 #endif | |
| 159 | |
| 160 return status; | |
| 161 } | |
| 162 | |
| 163 pid_t | |
| 164 octave_syscalls::getpid (void) | |
| 165 { | |
| 166 #if defined (HAVE_GETPID) | |
| 167 return ::getpid (); | |
| 168 #else | |
| 169 return 0; | |
| 170 #endif | |
| 171 } | |
| 172 | |
| 173 pid_t | |
| 174 octave_syscalls::getppid (void) | |
| 175 { | |
| 176 #if defined (HAVE_GETPPID) | |
| 177 return ::getppid (); | |
| 178 #else | |
| 179 return 0; | |
| 180 #endif | |
| 181 } | |
| 182 | |
| 183 gid_t | |
| 184 octave_syscalls::getgid (void) | |
| 185 { | |
| 186 #if defined (HAVE_GETGID) | |
| 187 return ::getgid (); | |
| 188 #else | |
| 189 return 0; | |
| 190 #endif | |
| 191 } | |
| 192 | |
| 193 gid_t | |
| 194 octave_syscalls::getegid (void) | |
| 195 { | |
| 196 #if defined (HAVE_GETEGID) | |
| 197 return ::getegid (); | |
| 198 #else | |
| 199 return 0; | |
| 200 #endif | |
| 201 } | |
| 202 | |
| 203 uid_t | |
| 204 octave_syscalls::getuid (void) | |
| 205 { | |
| 206 #if defined (HAVE_GETUID) | |
| 207 return ::getuid (); | |
| 208 #else | |
| 209 return 0; | |
| 210 #endif | |
| 211 } | |
| 212 | |
| 213 uid_t | |
| 214 octave_syscalls::geteuid (void) | |
| 215 { | |
| 216 #if defined (HAVE_GETEUID) | |
| 217 return ::geteuid (); | |
| 218 #else | |
| 219 return 0; | |
| 220 #endif | |
| 221 } | |
| 222 | |
| 223 int | |
| 224 octave_syscalls::pipe (int *fildes) | |
| 225 { | |
| 3504 | 226 std::string msg; |
| 6123 | 227 return pipe (fildes, msg); |
| 2941 | 228 } |
| 229 | |
| 230 int | |
| 3504 | 231 octave_syscalls::pipe (int *fildes, std::string& msg) |
| 2941 | 232 { |
| 3504 | 233 msg = std::string (); |
| 2941 | 234 |
| 235 int status = -1; | |
| 236 | |
| 237 #if defined (HAVE_PIPE) | |
| 238 status = ::pipe (fildes); | |
| 239 | |
| 240 if (status < 0) | |
| 10411 | 241 msg = gnulib::strerror (errno); |
| 2941 | 242 #else |
| 243 msg = NOT_SUPPORTED ("pipe"); | |
| 244 #endif | |
| 245 | |
| 246 return status; | |
| 247 } | |
| 248 | |
| 249 pid_t | |
| 5453 | 250 octave_syscalls::waitpid (pid_t pid, int *status, int options) |
| 2941 | 251 { |
| 3504 | 252 std::string msg; |
| 5453 | 253 return waitpid (pid, status, options, msg); |
| 2941 | 254 } |
| 255 | |
| 256 pid_t | |
| 5453 | 257 octave_syscalls::waitpid (pid_t pid, int *status, int options, |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
258 std::string& msg) |
| 2941 | 259 { |
| 6060 | 260 pid_t retval = -1; |
| 3504 | 261 msg = std::string (); |
| 2941 | 262 |
| 5453 | 263 #if defined (HAVE_WAITPID) |
| 6060 | 264 retval = ::octave_waitpid (pid, status, options); |
| 2941 | 265 |
| 5453 | 266 if (retval < 0) |
| 10411 | 267 msg = gnulib::strerror (errno); |
| 2941 | 268 #else |
| 269 msg = NOT_SUPPORTED ("waitpid"); | |
| 270 #endif | |
| 271 | |
| 5453 | 272 return retval; |
| 2941 | 273 } |
| 274 | |
| 4294 | 275 int |
| 276 octave_syscalls::kill (pid_t pid, int sig) | |
| 277 { | |
| 278 std::string msg; | |
| 279 return kill (pid, sig, msg); | |
| 280 } | |
| 281 | |
| 282 int | |
| 283 octave_syscalls::kill (pid_t pid, int sig, std::string& msg) | |
| 284 { | |
| 285 msg = std::string (); | |
| 286 | |
| 287 int status = -1; | |
| 288 | |
| 289 #if defined (HAVE_KILL) | |
| 290 status = ::kill (pid, sig); | |
| 291 | |
| 292 if (status < 0) | |
| 10411 | 293 msg = gnulib::strerror (errno); |
| 4294 | 294 #else |
| 295 msg = NOT_SUPPORTED ("kill"); | |
| 296 #endif | |
| 297 | |
| 298 return status; | |
| 299 } | |
| 300 | |
| 6321 | 301 pid_t |
| 302 octave_syscalls::popen2 (const std::string& cmd, const string_vector& args, | |
| 303 bool sync_mode, int *fildes) | |
| 304 { | |
| 305 std::string msg; | |
| 306 bool interactive = false; | |
| 307 return popen2 (cmd, args, sync_mode, fildes, msg, interactive); | |
| 308 } | |
| 309 | |
| 310 pid_t | |
| 311 octave_syscalls::popen2 (const std::string& cmd, const string_vector& args, | |
| 312 bool sync_mode, int *fildes, std::string& msg) | |
| 313 { | |
| 314 bool interactive = false; | |
| 315 return popen2 (cmd, args, sync_mode, fildes, msg, interactive); | |
| 316 } | |
| 317 | |
| 318 pid_t | |
| 319 octave_syscalls::popen2 (const std::string& cmd, const string_vector& args, | |
| 320 bool sync_mode, int *fildes, std::string& msg, bool &interactive) | |
| 321 { | |
| 322 #if defined (__WIN32__) && ! defined (__CYGWIN__) | |
| 323 return ::octave_popen2 (cmd, args, sync_mode, fildes, msg); | |
| 324 #else | |
| 325 pid_t pid; | |
| 326 int child_stdin[2], child_stdout[2]; | |
| 327 | |
| 328 if (pipe (child_stdin, msg) == 0) | |
| 329 { | |
| 330 if (pipe (child_stdout, msg) == 0) | |
| 331 { | |
| 332 pid = fork (msg); | |
| 333 if (pid < 0) | |
| 334 msg = "popen2: process creation failed -- " + msg; | |
| 335 else if (pid == 0) | |
| 336 { | |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
337 std::string child_msg; |
| 6321 | 338 |
|
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
339 interactive = false; |
| 6321 | 340 |
| 341 // Child process | |
| 10411 | 342 gnulib::close (child_stdin[1]); |
| 343 gnulib::close (child_stdout[0]); | |
| 6321 | 344 |
| 345 if (dup2 (child_stdin[0], STDIN_FILENO) >= 0) | |
| 346 { | |
| 10411 | 347 gnulib::close (child_stdin[0]); |
| 6321 | 348 if (dup2 (child_stdout[1], STDOUT_FILENO) >= 0) |
| 349 { | |
| 10411 | 350 gnulib::close (child_stdout[1]); |
| 6321 | 351 if (execvp (cmd, args, child_msg) < 0) |
| 352 child_msg = "popen2 (child): unable to start process -- " + child_msg; | |
| 353 } | |
| 354 else | |
| 355 child_msg = "popen2 (child): file handle duplication failed -- " + child_msg; | |
| 356 } | |
| 357 else | |
| 358 child_msg = "popen2 (child): file handle duplication failed -- " + child_msg; | |
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10314
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John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
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359 |
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07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
360 (*current_liboctave_error_handler)(child_msg.c_str()); |
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07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
361 |
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07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10259
diff
changeset
|
362 exit(0); |
| 6321 | 363 } |
| 364 else | |
| 365 { | |
| 366 // Parent process | |
| 10411 | 367 gnulib::close (child_stdin[0]); |
| 368 gnulib::close (child_stdout[1]); | |
| 369 | |
| 6321 | 370 #if defined (F_SETFL) && defined (O_NONBLOCK) |
| 10259 | 371 if (! sync_mode && octave_fcntl (child_stdout[0], F_SETFL, O_NONBLOCK, msg) < 0) |
| 6321 | 372 msg = "popen2: error setting file mode -- " + msg; |
| 373 else | |
| 374 #endif | |
| 375 { | |
| 376 fildes[0] = child_stdin [1]; | |
| 377 fildes[1] = child_stdout [0]; | |
| 378 return pid; | |
| 379 } | |
| 380 } | |
| 10411 | 381 gnulib::close (child_stdout[0]); |
| 382 gnulib::close (child_stdout[1]); | |
| 6321 | 383 } |
| 384 else | |
| 385 msg = "popen2: pipe creation failed -- " + msg; | |
| 10411 | 386 |
| 387 gnulib::close (child_stdin[0]); | |
| 388 gnulib::close (child_stdin[1]); | |
| 6321 | 389 } |
| 390 else | |
| 391 msg = "popen2: pipe creation failed -- " + msg; | |
| 392 | |
| 393 return -1; | |
| 394 #endif | |
| 395 } | |
| 10259 | 396 |
| 397 int | |
| 398 octave_fcntl (int fd, int cmd, long arg) | |
| 399 { | |
| 400 std::string msg; | |
| 401 return octave_fcntl (fd, cmd, arg, msg); | |
| 402 } | |
| 403 | |
| 404 int | |
| 405 octave_fcntl (int fd, int cmd, long arg, std::string& msg) | |
| 406 { | |
| 407 msg = std::string (); | |
| 408 | |
| 409 int status = -1; | |
| 410 | |
| 10411 | 411 status = gnulib::fcntl (fd, cmd, arg); |
| 10259 | 412 |
| 413 if (status < 0) | |
| 10411 | 414 msg = gnulib::strerror (errno); |
| 10259 | 415 |
| 416 return status; | |
| 417 } |