1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Jason Greene <jason@inetgurus.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 #define PCNTL_DEBUG 0
22
23 #if PCNTL_DEBUG
24 #define DEBUG_OUT printf("DEBUG: ");printf
25 #define IF_DEBUG(z) z
26 #else
27 #define IF_DEBUG(z)
28 #endif
29
30 #ifdef HAVE_CONFIG_H
31 #include "config.h"
32 #endif
33
34 #include "php.h"
35 #include "php_ini.h"
36 #include "ext/standard/info.h"
37 #include "php_pcntl.h"
38 #include "php_signal.h"
39 #include "php_ticks.h"
40
41 #if HAVE_GETPRIORITY || HAVE_SETPRIORITY || HAVE_WAIT3
42 #include <sys/wait.h>
43 #include <sys/time.h>
44 #include <sys/resource.h>
45 #endif
46
47 #include <errno.h>
48
49 ZEND_DECLARE_MODULE_GLOBALS(pcntl)
50 static PHP_GINIT_FUNCTION(pcntl);
51
52 /* {{{ arginfo */
53 ZEND_BEGIN_ARG_INFO(arginfo_pcntl_void, 0)
54 ZEND_END_ARG_INFO()
55
56 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_waitpid, 0, 0, 2)
57 ZEND_ARG_INFO(0, pid)
58 ZEND_ARG_INFO(1, status)
59 ZEND_ARG_INFO(0, options)
60 ZEND_END_ARG_INFO()
61
62 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wait, 0, 0, 1)
63 ZEND_ARG_INFO(1, status)
64 ZEND_ARG_INFO(0, options)
65 ZEND_END_ARG_INFO()
66
67 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_signal, 0, 0, 2)
68 ZEND_ARG_INFO(0, signo)
69 ZEND_ARG_INFO(0, handler)
70 ZEND_ARG_INFO(0, restart_syscalls)
71 ZEND_END_ARG_INFO()
72
73 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_sigprocmask, 0, 0, 2)
74 ZEND_ARG_INFO(0, how)
75 ZEND_ARG_INFO(0, set)
76 ZEND_ARG_INFO(1, oldset)
77 ZEND_END_ARG_INFO()
78
79 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_sigwaitinfo, 0, 0, 1)
80 ZEND_ARG_INFO(0, set)
81 ZEND_ARG_INFO(1, info)
82 ZEND_END_ARG_INFO()
83
84 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_sigtimedwait, 0, 0, 1)
85 ZEND_ARG_INFO(0, set)
86 ZEND_ARG_INFO(1, info)
87 ZEND_ARG_INFO(0, seconds)
88 ZEND_ARG_INFO(0, nanoseconds)
89 ZEND_END_ARG_INFO()
90
91 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wifexited, 0, 0, 1)
92 ZEND_ARG_INFO(0, status)
93 ZEND_END_ARG_INFO()
94
95 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wifstopped, 0, 0, 1)
96 ZEND_ARG_INFO(0, status)
97 ZEND_END_ARG_INFO()
98
99 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wifsignaled, 0, 0, 1)
100 ZEND_ARG_INFO(0, status)
101 ZEND_END_ARG_INFO()
102
103 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wifexitstatus, 0, 0, 1)
104 ZEND_ARG_INFO(0, status)
105 ZEND_END_ARG_INFO()
106
107 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wtermsig, 0, 0, 1)
108 ZEND_ARG_INFO(0, status)
109 ZEND_END_ARG_INFO()
110
111 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_wstopsig, 0, 0, 1)
112 ZEND_ARG_INFO(0, status)
113 ZEND_END_ARG_INFO()
114
115 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_exec, 0, 0, 1)
116 ZEND_ARG_INFO(0, path)
117 ZEND_ARG_INFO(0, args)
118 ZEND_ARG_INFO(0, envs)
119 ZEND_END_ARG_INFO()
120
121 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_alarm, 0, 0, 1)
122 ZEND_ARG_INFO(0, seconds)
123 ZEND_END_ARG_INFO()
124
125 #ifdef HAVE_GETPRIORITY
126 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_getpriority, 0, 0, 0)
127 ZEND_ARG_INFO(0, pid)
128 ZEND_ARG_INFO(0, process_identifier)
129 ZEND_END_ARG_INFO()
130 #endif
131
132 #ifdef HAVE_SETPRIORITY
133 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_setpriority, 0, 0, 1)
134 ZEND_ARG_INFO(0, priority)
135 ZEND_ARG_INFO(0, pid)
136 ZEND_ARG_INFO(0, process_identifier)
137 ZEND_END_ARG_INFO()
138 #endif
139
140 ZEND_BEGIN_ARG_INFO_EX(arginfo_pcntl_strerror, 0, 0, 1)
141 ZEND_ARG_INFO(0, errno)
142 ZEND_END_ARG_INFO()
143 /* }}} */
144
145 const zend_function_entry pcntl_functions[] = {
146 PHP_FE(pcntl_fork, arginfo_pcntl_void)
147 PHP_FE(pcntl_waitpid, arginfo_pcntl_waitpid)
148 PHP_FE(pcntl_wait, arginfo_pcntl_wait)
149 PHP_FE(pcntl_signal, arginfo_pcntl_signal)
150 PHP_FE(pcntl_signal_dispatch, arginfo_pcntl_void)
151 PHP_FE(pcntl_wifexited, arginfo_pcntl_wifexited)
152 PHP_FE(pcntl_wifstopped, arginfo_pcntl_wifstopped)
153 PHP_FE(pcntl_wifsignaled, arginfo_pcntl_wifsignaled)
154 PHP_FE(pcntl_wexitstatus, arginfo_pcntl_wifexitstatus)
155 PHP_FE(pcntl_wtermsig, arginfo_pcntl_wtermsig)
156 PHP_FE(pcntl_wstopsig, arginfo_pcntl_wstopsig)
157 PHP_FE(pcntl_exec, arginfo_pcntl_exec)
158 PHP_FE(pcntl_alarm, arginfo_pcntl_alarm)
159 PHP_FE(pcntl_get_last_error, arginfo_pcntl_void)
160 PHP_FALIAS(pcntl_errno, pcntl_get_last_error, NULL)
161 PHP_FE(pcntl_strerror, arginfo_pcntl_strerror)
162 #ifdef HAVE_GETPRIORITY
163 PHP_FE(pcntl_getpriority, arginfo_pcntl_getpriority)
164 #endif
165 #ifdef HAVE_SETPRIORITY
166 PHP_FE(pcntl_setpriority, arginfo_pcntl_setpriority)
167 #endif
168 #ifdef HAVE_SIGPROCMASK
169 PHP_FE(pcntl_sigprocmask, arginfo_pcntl_sigprocmask)
170 #endif
171 #if HAVE_SIGWAITINFO && HAVE_SIGTIMEDWAIT
172 PHP_FE(pcntl_sigwaitinfo, arginfo_pcntl_sigwaitinfo)
173 PHP_FE(pcntl_sigtimedwait, arginfo_pcntl_sigtimedwait)
174 #endif
175 PHP_FE_END
176 };
177
178 zend_module_entry pcntl_module_entry = {
179 STANDARD_MODULE_HEADER,
180 "pcntl",
181 pcntl_functions,
182 PHP_MINIT(pcntl),
183 PHP_MSHUTDOWN(pcntl),
184 PHP_RINIT(pcntl),
185 PHP_RSHUTDOWN(pcntl),
186 PHP_MINFO(pcntl),
187 NO_VERSION_YET,
188 PHP_MODULE_GLOBALS(pcntl),
189 PHP_GINIT(pcntl),
190 NULL,
191 NULL,
192 STANDARD_MODULE_PROPERTIES_EX
193 };
194
195 #ifdef COMPILE_DL_PCNTL
196 ZEND_GET_MODULE(pcntl)
197 #endif
198
199 static void pcntl_signal_handler(int);
200 static void pcntl_signal_dispatch();
201
php_register_signal_constants(INIT_FUNC_ARGS)202 void php_register_signal_constants(INIT_FUNC_ARGS)
203 {
204
205 /* Wait Constants */
206 #ifdef WNOHANG
207 REGISTER_LONG_CONSTANT("WNOHANG", (long) WNOHANG, CONST_CS | CONST_PERSISTENT);
208 #endif
209 #ifdef WUNTRACED
210 REGISTER_LONG_CONSTANT("WUNTRACED", (long) WUNTRACED, CONST_CS | CONST_PERSISTENT);
211 #endif
212
213 /* Signal Constants */
214 REGISTER_LONG_CONSTANT("SIG_IGN", (long) SIG_IGN, CONST_CS | CONST_PERSISTENT);
215 REGISTER_LONG_CONSTANT("SIG_DFL", (long) SIG_DFL, CONST_CS | CONST_PERSISTENT);
216 REGISTER_LONG_CONSTANT("SIG_ERR", (long) SIG_ERR, CONST_CS | CONST_PERSISTENT);
217 REGISTER_LONG_CONSTANT("SIGHUP", (long) SIGHUP, CONST_CS | CONST_PERSISTENT);
218 REGISTER_LONG_CONSTANT("SIGINT", (long) SIGINT, CONST_CS | CONST_PERSISTENT);
219 REGISTER_LONG_CONSTANT("SIGQUIT", (long) SIGQUIT, CONST_CS | CONST_PERSISTENT);
220 REGISTER_LONG_CONSTANT("SIGILL", (long) SIGILL, CONST_CS | CONST_PERSISTENT);
221 REGISTER_LONG_CONSTANT("SIGTRAP", (long) SIGTRAP, CONST_CS | CONST_PERSISTENT);
222 REGISTER_LONG_CONSTANT("SIGABRT", (long) SIGABRT, CONST_CS | CONST_PERSISTENT);
223 #ifdef SIGIOT
224 REGISTER_LONG_CONSTANT("SIGIOT", (long) SIGIOT, CONST_CS | CONST_PERSISTENT);
225 #endif
226 REGISTER_LONG_CONSTANT("SIGBUS", (long) SIGBUS, CONST_CS | CONST_PERSISTENT);
227 REGISTER_LONG_CONSTANT("SIGFPE", (long) SIGFPE, CONST_CS | CONST_PERSISTENT);
228 REGISTER_LONG_CONSTANT("SIGKILL", (long) SIGKILL, CONST_CS | CONST_PERSISTENT);
229 REGISTER_LONG_CONSTANT("SIGUSR1", (long) SIGUSR1, CONST_CS | CONST_PERSISTENT);
230 REGISTER_LONG_CONSTANT("SIGSEGV", (long) SIGSEGV, CONST_CS | CONST_PERSISTENT);
231 REGISTER_LONG_CONSTANT("SIGUSR2", (long) SIGUSR2, CONST_CS | CONST_PERSISTENT);
232 REGISTER_LONG_CONSTANT("SIGPIPE", (long) SIGPIPE, CONST_CS | CONST_PERSISTENT);
233 REGISTER_LONG_CONSTANT("SIGALRM", (long) SIGALRM, CONST_CS | CONST_PERSISTENT);
234 REGISTER_LONG_CONSTANT("SIGTERM", (long) SIGTERM, CONST_CS | CONST_PERSISTENT);
235 #ifdef SIGSTKFLT
236 REGISTER_LONG_CONSTANT("SIGSTKFLT",(long) SIGSTKFLT, CONST_CS | CONST_PERSISTENT);
237 #endif
238 #ifdef SIGCLD
239 REGISTER_LONG_CONSTANT("SIGCLD", (long) SIGCLD, CONST_CS | CONST_PERSISTENT);
240 #endif
241 #ifdef SIGCHLD
242 REGISTER_LONG_CONSTANT("SIGCHLD", (long) SIGCHLD, CONST_CS | CONST_PERSISTENT);
243 #endif
244 REGISTER_LONG_CONSTANT("SIGCONT", (long) SIGCONT, CONST_CS | CONST_PERSISTENT);
245 REGISTER_LONG_CONSTANT("SIGSTOP", (long) SIGSTOP, CONST_CS | CONST_PERSISTENT);
246 REGISTER_LONG_CONSTANT("SIGTSTP", (long) SIGTSTP, CONST_CS | CONST_PERSISTENT);
247 REGISTER_LONG_CONSTANT("SIGTTIN", (long) SIGTTIN, CONST_CS | CONST_PERSISTENT);
248 REGISTER_LONG_CONSTANT("SIGTTOU", (long) SIGTTOU, CONST_CS | CONST_PERSISTENT);
249 REGISTER_LONG_CONSTANT("SIGURG", (long) SIGURG , CONST_CS | CONST_PERSISTENT);
250 REGISTER_LONG_CONSTANT("SIGXCPU", (long) SIGXCPU, CONST_CS | CONST_PERSISTENT);
251 REGISTER_LONG_CONSTANT("SIGXFSZ", (long) SIGXFSZ, CONST_CS | CONST_PERSISTENT);
252 REGISTER_LONG_CONSTANT("SIGVTALRM",(long) SIGVTALRM, CONST_CS | CONST_PERSISTENT);
253 REGISTER_LONG_CONSTANT("SIGPROF", (long) SIGPROF, CONST_CS | CONST_PERSISTENT);
254 REGISTER_LONG_CONSTANT("SIGWINCH", (long) SIGWINCH, CONST_CS | CONST_PERSISTENT);
255 #ifdef SIGPOLL
256 REGISTER_LONG_CONSTANT("SIGPOLL", (long) SIGPOLL, CONST_CS | CONST_PERSISTENT);
257 #endif
258 REGISTER_LONG_CONSTANT("SIGIO", (long) SIGIO, CONST_CS | CONST_PERSISTENT);
259 #ifdef SIGPWR
260 REGISTER_LONG_CONSTANT("SIGPWR", (long) SIGPWR, CONST_CS | CONST_PERSISTENT);
261 #endif
262 #ifdef SIGSYS
263 REGISTER_LONG_CONSTANT("SIGSYS", (long) SIGSYS, CONST_CS | CONST_PERSISTENT);
264 REGISTER_LONG_CONSTANT("SIGBABY", (long) SIGSYS, CONST_CS | CONST_PERSISTENT);
265 #endif
266
267 #if HAVE_GETPRIORITY || HAVE_SETPRIORITY
268 REGISTER_LONG_CONSTANT("PRIO_PGRP", PRIO_PGRP, CONST_CS | CONST_PERSISTENT);
269 REGISTER_LONG_CONSTANT("PRIO_USER", PRIO_USER, CONST_CS | CONST_PERSISTENT);
270 REGISTER_LONG_CONSTANT("PRIO_PROCESS", PRIO_PROCESS, CONST_CS | CONST_PERSISTENT);
271 #endif
272
273 /* {{{ "how" argument for sigprocmask */
274 #ifdef HAVE_SIGPROCMASK
275 REGISTER_LONG_CONSTANT("SIG_BLOCK", SIG_BLOCK, CONST_CS | CONST_PERSISTENT);
276 REGISTER_LONG_CONSTANT("SIG_UNBLOCK", SIG_UNBLOCK, CONST_CS | CONST_PERSISTENT);
277 REGISTER_LONG_CONSTANT("SIG_SETMASK", SIG_SETMASK, CONST_CS | CONST_PERSISTENT);
278 #endif
279 /* }}} */
280
281 /* {{{ si_code */
282 #if HAVE_SIGWAITINFO && HAVE_SIGTIMEDWAIT
283 REGISTER_LONG_CONSTANT("SI_USER", SI_USER, CONST_CS | CONST_PERSISTENT);
284 #ifdef SI_NOINFO
285 REGISTER_LONG_CONSTANT("SI_NOINFO", SI_NOINFO, CONST_CS | CONST_PERSISTENT);
286 #endif
287 #ifdef SI_KERNEL
288 REGISTER_LONG_CONSTANT("SI_KERNEL", SI_KERNEL, CONST_CS | CONST_PERSISTENT);
289 #endif
290 REGISTER_LONG_CONSTANT("SI_QUEUE", SI_QUEUE, CONST_CS | CONST_PERSISTENT);
291 REGISTER_LONG_CONSTANT("SI_TIMER", SI_TIMER, CONST_CS | CONST_PERSISTENT);
292 REGISTER_LONG_CONSTANT("SI_MESGQ", SI_MESGQ, CONST_CS | CONST_PERSISTENT);
293 REGISTER_LONG_CONSTANT("SI_ASYNCIO", SI_ASYNCIO, CONST_CS | CONST_PERSISTENT);
294 #ifdef SI_SIGIO
295 REGISTER_LONG_CONSTANT("SI_SIGIO", SI_SIGIO, CONST_CS | CONST_PERSISTENT);
296 #endif
297 #ifdef SI_TKILL
298 REGISTER_LONG_CONSTANT("SI_TKILL", SI_TKILL, CONST_CS | CONST_PERSISTENT);
299 #endif
300
301 /* si_code for SIGCHILD */
302 #ifdef CLD_EXITED
303 REGISTER_LONG_CONSTANT("CLD_EXITED", CLD_EXITED, CONST_CS | CONST_PERSISTENT);
304 #endif
305 #ifdef CLD_KILLED
306 REGISTER_LONG_CONSTANT("CLD_KILLED", CLD_KILLED, CONST_CS | CONST_PERSISTENT);
307 #endif
308 #ifdef CLD_DUMPED
309 REGISTER_LONG_CONSTANT("CLD_DUMPED", CLD_DUMPED, CONST_CS | CONST_PERSISTENT);
310 #endif
311 #ifdef CLD_TRAPPED
312 REGISTER_LONG_CONSTANT("CLD_TRAPPED", CLD_TRAPPED, CONST_CS | CONST_PERSISTENT);
313 #endif
314 #ifdef CLD_STOPPED
315 REGISTER_LONG_CONSTANT("CLD_STOPPED", CLD_STOPPED, CONST_CS | CONST_PERSISTENT);
316 #endif
317 #ifdef CLD_CONTINUED
318 REGISTER_LONG_CONSTANT("CLD_CONTINUED", CLD_CONTINUED, CONST_CS | CONST_PERSISTENT);
319 #endif
320
321 /* si_code for SIGTRAP */
322 #ifdef TRAP_BRKPT
323 REGISTER_LONG_CONSTANT("TRAP_BRKPT", TRAP_BRKPT, CONST_CS | CONST_PERSISTENT);
324 #endif
325 #ifdef TRAP_TRACE
326 REGISTER_LONG_CONSTANT("TRAP_TRACE", TRAP_TRACE, CONST_CS | CONST_PERSISTENT);
327 #endif
328
329 /* si_code for SIGPOLL */
330 #ifdef POLL_IN
331 REGISTER_LONG_CONSTANT("POLL_IN", POLL_IN, CONST_CS | CONST_PERSISTENT);
332 #endif
333 #ifdef POLL_OUT
334 REGISTER_LONG_CONSTANT("POLL_OUT", POLL_OUT, CONST_CS | CONST_PERSISTENT);
335 #endif
336 #ifdef POLL_MSG
337 REGISTER_LONG_CONSTANT("POLL_MSG", POLL_MSG, CONST_CS | CONST_PERSISTENT);
338 #endif
339 #ifdef POLL_ERR
340 REGISTER_LONG_CONSTANT("POLL_ERR", POLL_ERR, CONST_CS | CONST_PERSISTENT);
341 #endif
342 #ifdef POLL_PRI
343 REGISTER_LONG_CONSTANT("POLL_PRI", POLL_PRI, CONST_CS | CONST_PERSISTENT);
344 #endif
345 #ifdef POLL_HUP
346 REGISTER_LONG_CONSTANT("POLL_HUP", POLL_HUP, CONST_CS | CONST_PERSISTENT);
347 #endif
348
349 #ifdef ILL_ILLOPC
350 REGISTER_LONG_CONSTANT("ILL_ILLOPC", ILL_ILLOPC, CONST_CS | CONST_PERSISTENT);
351 #endif
352 #ifdef ILL_ILLOPN
353 REGISTER_LONG_CONSTANT("ILL_ILLOPN", ILL_ILLOPN, CONST_CS | CONST_PERSISTENT);
354 #endif
355 #ifdef ILL_ILLADR
356 REGISTER_LONG_CONSTANT("ILL_ILLADR", ILL_ILLADR, CONST_CS | CONST_PERSISTENT);
357 #endif
358 #ifdef ILL_ILLTRP
359 REGISTER_LONG_CONSTANT("ILL_ILLTRP", ILL_ILLTRP, CONST_CS | CONST_PERSISTENT);
360 #endif
361 #ifdef ILL_PRVOPC
362 REGISTER_LONG_CONSTANT("ILL_PRVOPC", ILL_PRVOPC, CONST_CS | CONST_PERSISTENT);
363 #endif
364 #ifdef ILL_PRVREG
365 REGISTER_LONG_CONSTANT("ILL_PRVREG", ILL_PRVREG, CONST_CS | CONST_PERSISTENT);
366 #endif
367 #ifdef ILL_COPROC
368 REGISTER_LONG_CONSTANT("ILL_COPROC", ILL_COPROC, CONST_CS | CONST_PERSISTENT);
369 #endif
370 #ifdef ILL_BADSTK
371 REGISTER_LONG_CONSTANT("ILL_BADSTK", ILL_BADSTK, CONST_CS | CONST_PERSISTENT);
372 #endif
373
374 #ifdef FPE_INTDIV
375 REGISTER_LONG_CONSTANT("FPE_INTDIV", FPE_INTDIV, CONST_CS | CONST_PERSISTENT);
376 #endif
377 #ifdef FPE_INTOVF
378 REGISTER_LONG_CONSTANT("FPE_INTOVF", FPE_INTOVF, CONST_CS | CONST_PERSISTENT);
379 #endif
380 #ifdef FPE_FLTDIV
381 REGISTER_LONG_CONSTANT("FPE_FLTDIV", FPE_FLTDIV, CONST_CS | CONST_PERSISTENT);
382 #endif
383 #ifdef FPE_FLTOVF
384 REGISTER_LONG_CONSTANT("FPE_FLTOVF", FPE_FLTOVF, CONST_CS | CONST_PERSISTENT);
385 #endif
386 #ifdef FPE_FLTUND
387 REGISTER_LONG_CONSTANT("FPE_FLTUND", FPE_FLTINV, CONST_CS | CONST_PERSISTENT);
388 #endif
389 #ifdef FPE_FLTRES
390 REGISTER_LONG_CONSTANT("FPE_FLTRES", FPE_FLTRES, CONST_CS | CONST_PERSISTENT);
391 #endif
392 #ifdef FPE_FLTINV
393 REGISTER_LONG_CONSTANT("FPE_FLTINV", FPE_FLTINV, CONST_CS | CONST_PERSISTENT);
394 #endif
395 #ifdef FPE_FLTSUB
396 REGISTER_LONG_CONSTANT("FPE_FLTSUB", FPE_FLTSUB, CONST_CS | CONST_PERSISTENT);
397 #endif
398
399 #ifdef SEGV_MAPERR
400 REGISTER_LONG_CONSTANT("SEGV_MAPERR", SEGV_MAPERR, CONST_CS | CONST_PERSISTENT);
401 #endif
402 #ifdef SEGV_ACCERR
403 REGISTER_LONG_CONSTANT("SEGV_ACCERR", SEGV_ACCERR, CONST_CS | CONST_PERSISTENT);
404 #endif
405
406 #ifdef BUS_ADRALN
407 REGISTER_LONG_CONSTANT("BUS_ADRALN", BUS_ADRALN, CONST_CS | CONST_PERSISTENT);
408 #endif
409 #ifdef BUS_ADRERR
410 REGISTER_LONG_CONSTANT("BUS_ADRERR", BUS_ADRERR, CONST_CS | CONST_PERSISTENT);
411 #endif
412 #ifdef BUS_OBJERR
413 REGISTER_LONG_CONSTANT("BUS_OBJERR", BUS_OBJERR, CONST_CS | CONST_PERSISTENT);
414 #endif
415 #endif /* HAVE_SIGWAITINFO && HAVE_SIGTIMEDWAIT */
416 /* }}} */
417 }
418
php_pcntl_register_errno_constants(INIT_FUNC_ARGS)419 static void php_pcntl_register_errno_constants(INIT_FUNC_ARGS)
420 {
421 #ifdef EINTR
422 REGISTER_PCNTL_ERRNO_CONSTANT(EINTR);
423 #endif
424 #ifdef ECHILD
425 REGISTER_PCNTL_ERRNO_CONSTANT(ECHILD);
426 #endif
427 #ifdef EINVAL
428 REGISTER_PCNTL_ERRNO_CONSTANT(EINVAL);
429 #endif
430 #ifdef EAGAIN
431 REGISTER_PCNTL_ERRNO_CONSTANT(EAGAIN);
432 #endif
433 #ifdef ESRCH
434 REGISTER_PCNTL_ERRNO_CONSTANT(ESRCH);
435 #endif
436 #ifdef EACCES
437 REGISTER_PCNTL_ERRNO_CONSTANT(EACCES);
438 #endif
439 #ifdef EPERM
440 REGISTER_PCNTL_ERRNO_CONSTANT(EPERM);
441 #endif
442 #ifdef ENOMEM
443 REGISTER_PCNTL_ERRNO_CONSTANT(ENOMEM);
444 #endif
445 #ifdef E2BIG
446 REGISTER_PCNTL_ERRNO_CONSTANT(E2BIG);
447 #endif
448 #ifdef EFAULT
449 REGISTER_PCNTL_ERRNO_CONSTANT(EFAULT);
450 #endif
451 #ifdef EIO
452 REGISTER_PCNTL_ERRNO_CONSTANT(EIO);
453 #endif
454 #ifdef EISDIR
455 REGISTER_PCNTL_ERRNO_CONSTANT(EISDIR);
456 #endif
457 #ifdef ELIBBAD
458 REGISTER_PCNTL_ERRNO_CONSTANT(ELIBBAD);
459 #endif
460 #ifdef ELOOP
461 REGISTER_PCNTL_ERRNO_CONSTANT(ELOOP);
462 #endif
463 #ifdef EMFILE
464 REGISTER_PCNTL_ERRNO_CONSTANT(EMFILE);
465 #endif
466 #ifdef ENAMETOOLONG
467 REGISTER_PCNTL_ERRNO_CONSTANT(ENAMETOOLONG);
468 #endif
469 #ifdef ENFILE
470 REGISTER_PCNTL_ERRNO_CONSTANT(ENFILE);
471 #endif
472 #ifdef ENOENT
473 REGISTER_PCNTL_ERRNO_CONSTANT(ENOENT);
474 #endif
475 #ifdef ENOEXEC
476 REGISTER_PCNTL_ERRNO_CONSTANT(ENOEXEC);
477 #endif
478 #ifdef ENOTDIR
479 REGISTER_PCNTL_ERRNO_CONSTANT(ENOTDIR);
480 #endif
481 #ifdef ETXTBSY
482 REGISTER_PCNTL_ERRNO_CONSTANT(ETXTBSY);
483 #endif
484 }
485
PHP_GINIT_FUNCTION(pcntl)486 static PHP_GINIT_FUNCTION(pcntl)
487 {
488 memset(pcntl_globals, 0, sizeof(*pcntl_globals));
489 }
490
PHP_RINIT_FUNCTION(pcntl)491 PHP_RINIT_FUNCTION(pcntl)
492 {
493 zend_hash_init(&PCNTL_G(php_signal_table), 16, NULL, ZVAL_PTR_DTOR, 0);
494 PCNTL_G(head) = PCNTL_G(tail) = PCNTL_G(spares) = NULL;
495 return SUCCESS;
496 }
497
PHP_MINIT_FUNCTION(pcntl)498 PHP_MINIT_FUNCTION(pcntl)
499 {
500 php_register_signal_constants(INIT_FUNC_ARGS_PASSTHRU);
501 php_pcntl_register_errno_constants(INIT_FUNC_ARGS_PASSTHRU);
502 php_add_tick_function(pcntl_signal_dispatch);
503
504 return SUCCESS;
505 }
506
PHP_MSHUTDOWN_FUNCTION(pcntl)507 PHP_MSHUTDOWN_FUNCTION(pcntl)
508 {
509 return SUCCESS;
510 }
511
PHP_RSHUTDOWN_FUNCTION(pcntl)512 PHP_RSHUTDOWN_FUNCTION(pcntl)
513 {
514 struct php_pcntl_pending_signal *sig;
515
516 /* FIXME: if a signal is delivered after this point, things will go pear shaped;
517 * need to remove signal handlers */
518 zend_hash_destroy(&PCNTL_G(php_signal_table));
519 while (PCNTL_G(head)) {
520 sig = PCNTL_G(head);
521 PCNTL_G(head) = sig->next;
522 efree(sig);
523 }
524 while (PCNTL_G(spares)) {
525 sig = PCNTL_G(spares);
526 PCNTL_G(spares) = sig->next;
527 efree(sig);
528 }
529 return SUCCESS;
530 }
531
PHP_MINFO_FUNCTION(pcntl)532 PHP_MINFO_FUNCTION(pcntl)
533 {
534 php_info_print_table_start();
535 php_info_print_table_header(2, "pcntl support", "enabled");
536 php_info_print_table_end();
537 }
538
539 /* {{{ proto int pcntl_fork(void)
540 Forks the currently running process following the same behavior as the UNIX fork() system call*/
PHP_FUNCTION(pcntl_fork)541 PHP_FUNCTION(pcntl_fork)
542 {
543 pid_t id;
544
545 id = fork();
546 if (id == -1) {
547 PCNTL_G(last_error) = errno;
548 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d", errno);
549 }
550
551 RETURN_LONG((long) id);
552 }
553 /* }}} */
554
555 /* {{{ proto int pcntl_alarm(int seconds)
556 Set an alarm clock for delivery of a signal*/
PHP_FUNCTION(pcntl_alarm)557 PHP_FUNCTION(pcntl_alarm)
558 {
559 long seconds;
560
561 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &seconds) == FAILURE)
562 return;
563
564 RETURN_LONG ((long) alarm(seconds));
565 }
566 /* }}} */
567
568 /* {{{ proto int pcntl_waitpid(int pid, int &status, int options)
569 Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_waitpid)570 PHP_FUNCTION(pcntl_waitpid)
571 {
572 long pid, options = 0;
573 zval *z_status = NULL;
574 int status;
575 pid_t child_id;
576
577 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lz|l", &pid, &z_status, &options) == FAILURE)
578 return;
579
580 convert_to_long_ex(&z_status);
581
582 status = Z_LVAL_P(z_status);
583
584 child_id = waitpid((pid_t) pid, &status, options);
585
586 if (child_id < 0) {
587 PCNTL_G(last_error) = errno;
588 }
589
590 Z_LVAL_P(z_status) = status;
591
592 RETURN_LONG((long) child_id);
593 }
594 /* }}} */
595
596 /* {{{ proto int pcntl_wait(int &status)
597 Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_wait)598 PHP_FUNCTION(pcntl_wait)
599 {
600 long options = 0;
601 zval *z_status = NULL;
602 int status;
603 pid_t child_id;
604
605 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|l", &z_status, &options) == FAILURE)
606 return;
607
608 convert_to_long_ex(&z_status);
609
610 status = Z_LVAL_P(z_status);
611 #ifdef HAVE_WAIT3
612 if(options) {
613 child_id = wait3(&status, options, NULL);
614 }
615 else {
616 child_id = wait(&status);
617 }
618 #else
619 child_id = wait(&status);
620 #endif
621 if (child_id < 0) {
622 PCNTL_G(last_error) = errno;
623 }
624
625 Z_LVAL_P(z_status) = status;
626
627 RETURN_LONG((long) child_id);
628 }
629 /* }}} */
630
631 /* {{{ proto bool pcntl_wifexited(int status)
632 Returns true if the child status code represents a successful exit */
PHP_FUNCTION(pcntl_wifexited)633 PHP_FUNCTION(pcntl_wifexited)
634 {
635 #ifdef WIFEXITED
636 long status_word;
637
638 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
639 return;
640 }
641
642 if (WIFEXITED(status_word))
643 RETURN_TRUE;
644 #endif
645 RETURN_FALSE;
646 }
647 /* }}} */
648
649 /* {{{ proto bool pcntl_wifstopped(int status)
650 Returns true if the child status code represents a stopped process (WUNTRACED must have been used with waitpid) */
PHP_FUNCTION(pcntl_wifstopped)651 PHP_FUNCTION(pcntl_wifstopped)
652 {
653 #ifdef WIFSTOPPED
654 long status_word;
655
656 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
657 return;
658 }
659
660 if (WIFSTOPPED(status_word))
661 RETURN_TRUE;
662 #endif
663 RETURN_FALSE;
664 }
665 /* }}} */
666
667 /* {{{ proto bool pcntl_wifsignaled(int status)
668 Returns true if the child status code represents a process that was terminated due to a signal */
PHP_FUNCTION(pcntl_wifsignaled)669 PHP_FUNCTION(pcntl_wifsignaled)
670 {
671 #ifdef WIFSIGNALED
672 long status_word;
673
674 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
675 return;
676 }
677
678 if (WIFSIGNALED(status_word))
679 RETURN_TRUE;
680 #endif
681 RETURN_FALSE;
682 }
683 /* }}} */
684
685 /* {{{ proto int pcntl_wexitstatus(int status)
686 Returns the status code of a child's exit */
PHP_FUNCTION(pcntl_wexitstatus)687 PHP_FUNCTION(pcntl_wexitstatus)
688 {
689 #ifdef WEXITSTATUS
690 long status_word;
691
692 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
693 return;
694 }
695
696 RETURN_LONG(WEXITSTATUS(status_word));
697 #else
698 RETURN_FALSE;
699 #endif
700 }
701 /* }}} */
702
703 /* {{{ proto int pcntl_wtermsig(int status)
704 Returns the number of the signal that terminated the process who's status code is passed */
PHP_FUNCTION(pcntl_wtermsig)705 PHP_FUNCTION(pcntl_wtermsig)
706 {
707 #ifdef WTERMSIG
708 long status_word;
709
710 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
711 return;
712 }
713
714 RETURN_LONG(WTERMSIG(status_word));
715 #else
716 RETURN_FALSE;
717 #endif
718 }
719 /* }}} */
720
721 /* {{{ proto int pcntl_wstopsig(int status)
722 Returns the number of the signal that caused the process to stop who's status code is passed */
PHP_FUNCTION(pcntl_wstopsig)723 PHP_FUNCTION(pcntl_wstopsig)
724 {
725 #ifdef WSTOPSIG
726 long status_word;
727
728 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &status_word) == FAILURE) {
729 return;
730 }
731
732 RETURN_LONG(WSTOPSIG(status_word));
733 #else
734 RETURN_FALSE;
735 #endif
736 }
737 /* }}} */
738
739 /* {{{ proto bool pcntl_exec(string path [, array args [, array envs]])
740 Executes specified program in current process space as defined by exec(2) */
PHP_FUNCTION(pcntl_exec)741 PHP_FUNCTION(pcntl_exec)
742 {
743 zval *args = NULL, *envs = NULL;
744 zval **element;
745 HashTable *args_hash, *envs_hash;
746 int argc = 0, argi = 0;
747 int envc = 0, envi = 0;
748 int return_val = 0;
749 char **argv = NULL, **envp = NULL;
750 char **current_arg, **pair;
751 int pair_length;
752 char *key;
753 uint key_length;
754 char *path;
755 int path_len;
756 ulong key_num;
757
758 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p|aa", &path, &path_len, &args, &envs) == FAILURE) {
759 return;
760 }
761
762 if (ZEND_NUM_ARGS() > 1) {
763 /* Build argument list */
764 args_hash = HASH_OF(args);
765 argc = zend_hash_num_elements(args_hash);
766
767 argv = safe_emalloc((argc + 2), sizeof(char *), 0);
768 *argv = path;
769 for ( zend_hash_internal_pointer_reset(args_hash), current_arg = argv+1;
770 (argi < argc && (zend_hash_get_current_data(args_hash, (void **) &element) == SUCCESS));
771 (argi++, current_arg++, zend_hash_move_forward(args_hash)) ) {
772
773 convert_to_string_ex(element);
774 *current_arg = Z_STRVAL_PP(element);
775 }
776 *(current_arg) = NULL;
777 } else {
778 argv = emalloc(2 * sizeof(char *));
779 *argv = path;
780 *(argv+1) = NULL;
781 }
782
783 if ( ZEND_NUM_ARGS() == 3 ) {
784 /* Build environment pair list */
785 envs_hash = HASH_OF(envs);
786 envc = zend_hash_num_elements(envs_hash);
787
788 envp = safe_emalloc((envc + 1), sizeof(char *), 0);
789 for ( zend_hash_internal_pointer_reset(envs_hash), pair = envp;
790 (envi < envc && (zend_hash_get_current_data(envs_hash, (void **) &element) == SUCCESS));
791 (envi++, pair++, zend_hash_move_forward(envs_hash)) ) {
792 switch (return_val = zend_hash_get_current_key_ex(envs_hash, &key, &key_length, &key_num, 0, NULL)) {
793 case HASH_KEY_IS_LONG:
794 key = emalloc(101);
795 snprintf(key, 100, "%ld", key_num);
796 key_length = strlen(key);
797 break;
798 case HASH_KEY_NON_EXISTENT:
799 pair--;
800 continue;
801 }
802
803 convert_to_string_ex(element);
804
805 /* Length of element + equal sign + length of key + null */
806 pair_length = Z_STRLEN_PP(element) + key_length + 2;
807 *pair = emalloc(pair_length);
808 strlcpy(*pair, key, key_length);
809 strlcat(*pair, "=", pair_length);
810 strlcat(*pair, Z_STRVAL_PP(element), pair_length);
811
812 /* Cleanup */
813 if (return_val == HASH_KEY_IS_LONG) efree(key);
814 }
815 *(pair) = NULL;
816
817 if (execve(path, argv, envp) == -1) {
818 PCNTL_G(last_error) = errno;
819 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error has occurred: (errno %d) %s", errno, strerror(errno));
820 }
821
822 /* Cleanup */
823 for (pair = envp; *pair != NULL; pair++) efree(*pair);
824 efree(envp);
825 } else {
826
827 if (execv(path, argv) == -1) {
828 PCNTL_G(last_error) = errno;
829 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error has occurred: (errno %d) %s", errno, strerror(errno));
830 }
831 }
832
833 efree(argv);
834
835 RETURN_FALSE;
836 }
837 /* }}} */
838
839 /* {{{ proto bool pcntl_signal(int signo, callback handle [, bool restart_syscalls])
840 Assigns a system signal handler to a PHP function */
PHP_FUNCTION(pcntl_signal)841 PHP_FUNCTION(pcntl_signal)
842 {
843 zval *handle, **dest_handle = NULL;
844 char *func_name;
845 long signo;
846 zend_bool restart_syscalls = 1;
847
848 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lz|b", &signo, &handle, &restart_syscalls) == FAILURE) {
849 return;
850 }
851
852 if (signo < 1 || signo > 32) {
853 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid signal");
854 RETURN_FALSE;
855 }
856
857 if (!PCNTL_G(spares)) {
858 /* since calling malloc() from within a signal handler is not portable,
859 * pre-allocate a few records for recording signals */
860 int i;
861 for (i = 0; i < 32; i++) {
862 struct php_pcntl_pending_signal *psig;
863
864 psig = emalloc(sizeof(*psig));
865 psig->next = PCNTL_G(spares);
866 PCNTL_G(spares) = psig;
867 }
868 }
869
870 /* Special long value case for SIG_DFL and SIG_IGN */
871 if (Z_TYPE_P(handle) == IS_LONG) {
872 if (Z_LVAL_P(handle) != (long) SIG_DFL && Z_LVAL_P(handle) != (long) SIG_IGN) {
873 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid value for handle argument specified");
874 RETURN_FALSE;
875 }
876 if (php_signal(signo, (Sigfunc *) Z_LVAL_P(handle), (int) restart_syscalls) == SIG_ERR) {
877 PCNTL_G(last_error) = errno;
878 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error assigning signal");
879 RETURN_FALSE;
880 }
881 zend_hash_index_del(&PCNTL_G(php_signal_table), signo);
882 RETURN_TRUE;
883 }
884
885 if (!zend_is_callable(handle, 0, &func_name TSRMLS_CC)) {
886 PCNTL_G(last_error) = EINVAL;
887 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s is not a callable function name error", func_name);
888 efree(func_name);
889 RETURN_FALSE;
890 }
891 efree(func_name);
892
893 /* Add the function name to our signal table */
894 zend_hash_index_update(&PCNTL_G(php_signal_table), signo, (void **) &handle, sizeof(zval *), (void **) &dest_handle);
895 if (dest_handle) zval_add_ref(dest_handle);
896
897 if (php_signal4(signo, pcntl_signal_handler, (int) restart_syscalls, 1) == SIG_ERR) {
898 PCNTL_G(last_error) = errno;
899 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error assigning signal");
900 RETURN_FALSE;
901 }
902 RETURN_TRUE;
903 }
904 /* }}} */
905
906 /* {{{ proto bool pcntl_signal_dispatch()
907 Dispatch signals to signal handlers */
PHP_FUNCTION(pcntl_signal_dispatch)908 PHP_FUNCTION(pcntl_signal_dispatch)
909 {
910 pcntl_signal_dispatch();
911 RETURN_TRUE;
912 }
913 /* }}} */
914
915 #ifdef HAVE_SIGPROCMASK
916 /* {{{ proto bool pcntl_sigprocmask(int how, array set[, array &oldset])
917 Examine and change blocked signals */
PHP_FUNCTION(pcntl_sigprocmask)918 PHP_FUNCTION(pcntl_sigprocmask)
919 {
920 long how, signo;
921 zval *user_set, *user_oldset = NULL, **user_signo;
922 sigset_t set, oldset;
923 HashPosition pos;
924
925 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "la|z", &how, &user_set, &user_oldset) == FAILURE) {
926 return;
927 }
928
929 if (sigemptyset(&set) != 0 || sigemptyset(&oldset) != 0) {
930 PCNTL_G(last_error) = errno;
931 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
932 RETURN_FALSE;
933 }
934
935 zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(user_set), &pos);
936 while (zend_hash_get_current_data_ex(Z_ARRVAL_P(user_set), (void **)&user_signo, &pos) == SUCCESS)
937 {
938 if (Z_TYPE_PP(user_signo) != IS_LONG) {
939 SEPARATE_ZVAL(user_signo);
940 convert_to_long_ex(user_signo);
941 }
942 signo = Z_LVAL_PP(user_signo);
943 if (sigaddset(&set, signo) != 0) {
944 PCNTL_G(last_error) = errno;
945 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
946 RETURN_FALSE;
947 }
948 zend_hash_move_forward_ex(Z_ARRVAL_P(user_set), &pos);
949 }
950
951 if (sigprocmask(how, &set, &oldset) != 0) {
952 PCNTL_G(last_error) = errno;
953 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
954 RETURN_FALSE;
955 }
956
957 if (user_oldset != NULL) {
958 if (Z_TYPE_P(user_oldset) != IS_ARRAY) {
959 zval_dtor(user_oldset);
960 array_init(user_oldset);
961 } else {
962 zend_hash_clean(Z_ARRVAL_P(user_oldset));
963 }
964 for (signo = 1; signo < MAX(NSIG-1, SIGRTMAX); ++signo) {
965 if (sigismember(&oldset, signo) != 1) {
966 continue;
967 }
968 add_next_index_long(user_oldset, signo);
969 }
970 }
971
972 RETURN_TRUE;
973 }
974 /* }}} */
975 #endif
976
977 #if HAVE_SIGWAITINFO && HAVE_SIGTIMEDWAIT
pcntl_sigwaitinfo(INTERNAL_FUNCTION_PARAMETERS,int timedwait)978 static void pcntl_sigwaitinfo(INTERNAL_FUNCTION_PARAMETERS, int timedwait) /* {{{ */
979 {
980 zval *user_set, **user_signo, *user_siginfo = NULL;
981 long tv_sec = 0, tv_nsec = 0;
982 sigset_t set;
983 HashPosition pos;
984 int signo;
985 siginfo_t siginfo;
986 struct timespec timeout;
987
988 if (timedwait) {
989 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a|zll", &user_set, &user_siginfo, &tv_sec, &tv_nsec) == FAILURE) {
990 return;
991 }
992 } else {
993 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a|z", &user_set, &user_siginfo) == FAILURE) {
994 return;
995 }
996 }
997
998 if (sigemptyset(&set) != 0) {
999 PCNTL_G(last_error) = errno;
1000 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
1001 RETURN_FALSE;
1002 }
1003
1004 zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(user_set), &pos);
1005 while (zend_hash_get_current_data_ex(Z_ARRVAL_P(user_set), (void **)&user_signo, &pos) == SUCCESS)
1006 {
1007 if (Z_TYPE_PP(user_signo) != IS_LONG) {
1008 SEPARATE_ZVAL(user_signo);
1009 convert_to_long_ex(user_signo);
1010 }
1011 signo = Z_LVAL_PP(user_signo);
1012 if (sigaddset(&set, signo) != 0) {
1013 PCNTL_G(last_error) = errno;
1014 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
1015 RETURN_FALSE;
1016 }
1017 zend_hash_move_forward_ex(Z_ARRVAL_P(user_set), &pos);
1018 }
1019
1020 if (timedwait) {
1021 timeout.tv_sec = (time_t) tv_sec;
1022 timeout.tv_nsec = tv_nsec;
1023 signo = sigtimedwait(&set, &siginfo, &timeout);
1024 } else {
1025 signo = sigwaitinfo(&set, &siginfo);
1026 }
1027 if (signo == -1 && errno != EAGAIN) {
1028 PCNTL_G(last_error) = errno;
1029 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
1030 }
1031
1032 /*
1033 * sigtimedwait and sigwaitinfo can return 0 on success on some
1034 * platforms, e.g. NetBSD
1035 */
1036 if (!signo && siginfo.si_signo) {
1037 signo = siginfo.si_signo;
1038 }
1039
1040 if (signo > 0 && user_siginfo) {
1041 if (Z_TYPE_P(user_siginfo) != IS_ARRAY) {
1042 zval_dtor(user_siginfo);
1043 array_init(user_siginfo);
1044 } else {
1045 zend_hash_clean(Z_ARRVAL_P(user_siginfo));
1046 }
1047 add_assoc_long_ex(user_siginfo, "signo", sizeof("signo"), siginfo.si_signo);
1048 add_assoc_long_ex(user_siginfo, "errno", sizeof("errno"), siginfo.si_errno);
1049 add_assoc_long_ex(user_siginfo, "code", sizeof("code"), siginfo.si_code);
1050 switch(signo) {
1051 #ifdef SIGCHLD
1052 case SIGCHLD:
1053 add_assoc_long_ex(user_siginfo, "status", sizeof("status"), siginfo.si_status);
1054 # ifdef si_utime
1055 add_assoc_double_ex(user_siginfo, "utime", sizeof("utime"), siginfo.si_utime);
1056 # endif
1057 # ifdef si_stime
1058 add_assoc_double_ex(user_siginfo, "stime", sizeof("stime"), siginfo.si_stime);
1059 # endif
1060 add_assoc_long_ex(user_siginfo, "pid", sizeof("pid"), siginfo.si_pid);
1061 add_assoc_long_ex(user_siginfo, "uid", sizeof("uid"), siginfo.si_uid);
1062 break;
1063 #endif
1064 case SIGILL:
1065 case SIGFPE:
1066 case SIGSEGV:
1067 case SIGBUS:
1068 add_assoc_double_ex(user_siginfo, "addr", sizeof("addr"), (long)siginfo.si_addr);
1069 break;
1070 #ifdef SIGPOLL
1071 case SIGPOLL:
1072 add_assoc_long_ex(user_siginfo, "band", sizeof("band"), siginfo.si_band);
1073 # ifdef si_fd
1074 add_assoc_long_ex(user_siginfo, "fd", sizeof("fd"), siginfo.si_fd);
1075 # endif
1076 break;
1077 #endif
1078 EMPTY_SWITCH_DEFAULT_CASE();
1079 }
1080 }
1081
1082 RETURN_LONG(signo);
1083 }
1084 /* }}} */
1085
1086 /* {{{ proto int pcnlt_sigwaitinfo(array set[, array &siginfo])
1087 Synchronously wait for queued signals */
PHP_FUNCTION(pcntl_sigwaitinfo)1088 PHP_FUNCTION(pcntl_sigwaitinfo)
1089 {
1090 pcntl_sigwaitinfo(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1091 }
1092 /* }}} */
1093
1094 /* {{{ proto int pcntl_sigtimedwait(array set[, array &siginfo[, int seconds[, int nanoseconds]]])
1095 Wait for queued signals */
PHP_FUNCTION(pcntl_sigtimedwait)1096 PHP_FUNCTION(pcntl_sigtimedwait)
1097 {
1098 pcntl_sigwaitinfo(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
1099 }
1100 /* }}} */
1101 #endif
1102
1103 #ifdef HAVE_GETPRIORITY
1104 /* {{{ proto int pcntl_getpriority([int pid [, int process_identifier]])
1105 Get the priority of any process */
PHP_FUNCTION(pcntl_getpriority)1106 PHP_FUNCTION(pcntl_getpriority)
1107 {
1108 long who = PRIO_PROCESS;
1109 long pid = getpid();
1110 int pri;
1111
1112 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|ll", &pid, &who) == FAILURE) {
1113 RETURN_FALSE;
1114 }
1115
1116 /* needs to be cleared, since any returned value is valid */
1117 errno = 0;
1118
1119 pri = getpriority(who, pid);
1120
1121 if (errno) {
1122 PCNTL_G(last_error) = errno;
1123 switch (errno) {
1124 case ESRCH:
1125 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: No process was located using the given parameters", errno);
1126 break;
1127 case EINVAL:
1128 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Invalid identifier flag", errno);
1129 break;
1130 default:
1131 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown error %d has occurred", errno);
1132 break;
1133 }
1134 RETURN_FALSE;
1135 }
1136
1137 RETURN_LONG(pri);
1138 }
1139 /* }}} */
1140 #endif
1141
1142 #ifdef HAVE_SETPRIORITY
1143 /* {{{ proto bool pcntl_setpriority(int priority [, int pid [, int process_identifier]])
1144 Change the priority of any process */
PHP_FUNCTION(pcntl_setpriority)1145 PHP_FUNCTION(pcntl_setpriority)
1146 {
1147 long who = PRIO_PROCESS;
1148 long pid = getpid();
1149 long pri;
1150
1151 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|ll", &pri, &pid, &who) == FAILURE) {
1152 RETURN_FALSE;
1153 }
1154
1155 if (setpriority(who, pid, pri)) {
1156 PCNTL_G(last_error) = errno;
1157 switch (errno) {
1158 case ESRCH:
1159 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: No process was located using the given parameters", errno);
1160 break;
1161 case EINVAL:
1162 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Invalid identifier flag", errno);
1163 break;
1164 case EPERM:
1165 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: A process was located, but neither its effective nor real user ID matched the effective user ID of the caller", errno);
1166 break;
1167 case EACCES:
1168 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Only a super user may attempt to increase the process priority", errno);
1169 break;
1170 default:
1171 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown error %d has occurred", errno);
1172 break;
1173 }
1174 RETURN_FALSE;
1175 }
1176
1177 RETURN_TRUE;
1178 }
1179 /* }}} */
1180 #endif
1181
1182 /* {{{ proto int pcntl_get_last_error(void)
1183 Retrieve the error number set by the last pcntl function which failed. */
PHP_FUNCTION(pcntl_get_last_error)1184 PHP_FUNCTION(pcntl_get_last_error)
1185 {
1186 RETURN_LONG(PCNTL_G(last_error));
1187 }
1188 /* }}} */
1189
1190 /* {{{ proto string pcntl_strerror(int errno)
1191 Retrieve the system error message associated with the given errno. */
PHP_FUNCTION(pcntl_strerror)1192 PHP_FUNCTION(pcntl_strerror)
1193 {
1194 long error;
1195
1196 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &error) == FAILURE) {
1197 RETURN_FALSE;
1198 }
1199
1200 RETURN_STRING(strerror(error), 1);
1201 }
1202 /* }}} */
1203
1204 /* Our custom signal handler that calls the appropriate php_function */
pcntl_signal_handler(int signo)1205 static void pcntl_signal_handler(int signo)
1206 {
1207 struct php_pcntl_pending_signal *psig;
1208 TSRMLS_FETCH();
1209
1210 psig = PCNTL_G(spares);
1211 if (!psig) {
1212 /* oops, too many signals for us to track, so we'll forget about this one */
1213 return;
1214 }
1215 PCNTL_G(spares) = psig->next;
1216
1217 psig->signo = signo;
1218 psig->next = NULL;
1219
1220 /* the head check is important, as the tick handler cannot atomically clear both
1221 * the head and tail */
1222 if (PCNTL_G(head) && PCNTL_G(tail)) {
1223 PCNTL_G(tail)->next = psig;
1224 } else {
1225 PCNTL_G(head) = psig;
1226 }
1227 PCNTL_G(tail) = psig;
1228 PCNTL_G(pending_signals) = 1;
1229 }
1230
pcntl_signal_dispatch()1231 void pcntl_signal_dispatch()
1232 {
1233 zval *param, **handle, *retval;
1234 struct php_pcntl_pending_signal *queue, *next;
1235 sigset_t mask;
1236 sigset_t old_mask;
1237 TSRMLS_FETCH();
1238
1239 if(!PCNTL_G(pending_signals)) {
1240 return;
1241 }
1242
1243 /* Mask all signals */
1244 sigfillset(&mask);
1245 sigprocmask(SIG_BLOCK, &mask, &old_mask);
1246
1247 /* Bail if the queue is empty or if we are already playing the queue*/
1248 if (! PCNTL_G(head) || PCNTL_G(processing_signal_queue)) {
1249 sigprocmask(SIG_SETMASK, &old_mask, NULL);
1250 return;
1251 }
1252
1253 /* Prevent reentrant handler calls */
1254 PCNTL_G(processing_signal_queue) = 1;
1255
1256 queue = PCNTL_G(head);
1257 PCNTL_G(head) = NULL; /* simple stores are atomic */
1258
1259 /* Allocate */
1260
1261 while (queue) {
1262 if (zend_hash_index_find(&PCNTL_G(php_signal_table), queue->signo, (void **) &handle)==SUCCESS) {
1263 MAKE_STD_ZVAL(retval);
1264 MAKE_STD_ZVAL(param);
1265 ZVAL_NULL(retval);
1266 ZVAL_LONG(param, queue->signo);
1267
1268 /* Call php signal handler - Note that we do not report errors, and we ignore the return value */
1269 /* FIXME: this is probably broken when multiple signals are handled in this while loop (retval) */
1270 call_user_function(EG(function_table), NULL, *handle, retval, 1, ¶m TSRMLS_CC);
1271 zval_ptr_dtor(¶m);
1272 zval_ptr_dtor(&retval);
1273 }
1274
1275 next = queue->next;
1276 queue->next = PCNTL_G(spares);
1277 PCNTL_G(spares) = queue;
1278 queue = next;
1279 }
1280
1281 PCNTL_G(pending_signals) = 0;
1282
1283 /* Re-enable queue */
1284 PCNTL_G(processing_signal_queue) = 0;
1285
1286 /* return signal mask to previous state */
1287 sigprocmask(SIG_SETMASK, &old_mask, NULL);
1288 }
1289
1290
1291
1292 /*
1293 * Local variables:
1294 * tab-width: 4
1295 * c-basic-offset: 4
1296 * indent-tabs-mode: t
1297 * End:
1298 */
1299
