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pcntl.c
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pcntl.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jason Greene <jason@inetgurus.net> |
+----------------------------------------------------------------------+
*/
#define PCNTL_DEBUG 0
#if PCNTL_DEBUG
#define DEBUG_OUT printf("DEBUG: ");printf
#define IF_DEBUG(z) z
#else
#define IF_DEBUG(z)
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_pcntl.h"
#include "pcntl_arginfo.h"
#include "php_signal.h"
#include "php_ticks.h"
#if defined(HAVE_GETPRIORITY) || defined(HAVE_SETPRIORITY) || defined(HAVE_WAIT3)
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <errno.h>
#ifdef HAVE_UNSHARE
#include <sched.h>
#endif
#ifndef NSIG
# define NSIG 32
#endif
#include "Zend/zend_max_execution_timer.h"
ZEND_DECLARE_MODULE_GLOBALS(pcntl)
static PHP_GINIT_FUNCTION(pcntl);
zend_module_entry pcntl_module_entry = {
STANDARD_MODULE_HEADER,
"pcntl",
ext_functions,
PHP_MINIT(pcntl),
PHP_MSHUTDOWN(pcntl),
PHP_RINIT(pcntl),
PHP_RSHUTDOWN(pcntl),
PHP_MINFO(pcntl),
PHP_PCNTL_VERSION,
PHP_MODULE_GLOBALS(pcntl),
PHP_GINIT(pcntl),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
#ifdef COMPILE_DL_PCNTL
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(pcntl)
#endif
static void (*orig_interrupt_function)(zend_execute_data *execute_data);
#ifdef HAVE_STRUCT_SIGINFO_T
static void pcntl_signal_handler(int, siginfo_t*, void*);
static void pcntl_siginfo_to_zval(int, siginfo_t*, zval*);
#else
static void pcntl_signal_handler(int);
#endif
static void pcntl_signal_dispatch(void);
static void pcntl_signal_dispatch_tick_function(int dummy_int, void *dummy_pointer);
static void pcntl_interrupt_function(zend_execute_data *execute_data);
void php_register_signal_constants(INIT_FUNC_ARGS)
{
/* Wait Constants */
#ifdef WNOHANG
REGISTER_LONG_CONSTANT("WNOHANG", (zend_long) WNOHANG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef WUNTRACED
REGISTER_LONG_CONSTANT("WUNTRACED", (zend_long) WUNTRACED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef HAVE_WCONTINUED
REGISTER_LONG_CONSTANT("WCONTINUED", (zend_long) WCONTINUED, CONST_CS | CONST_PERSISTENT);
#endif
/* Signal Constants */
REGISTER_LONG_CONSTANT("SIG_IGN", (zend_long) SIG_IGN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_DFL", (zend_long) SIG_DFL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_ERR", (zend_long) SIG_ERR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGHUP", (zend_long) SIGHUP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGINT", (zend_long) SIGINT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGQUIT", (zend_long) SIGQUIT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGILL", (zend_long) SIGILL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTRAP", (zend_long) SIGTRAP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGABRT", (zend_long) SIGABRT, CONST_CS | CONST_PERSISTENT);
#ifdef SIGIOT
REGISTER_LONG_CONSTANT("SIGIOT", (zend_long) SIGIOT, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SIGBUS", (zend_long) SIGBUS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGFPE", (zend_long) SIGFPE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGKILL", (zend_long) SIGKILL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGUSR1", (zend_long) SIGUSR1, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGSEGV", (zend_long) SIGSEGV, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGUSR2", (zend_long) SIGUSR2, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGPIPE", (zend_long) SIGPIPE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGALRM", (zend_long) SIGALRM, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTERM", (zend_long) SIGTERM, CONST_CS | CONST_PERSISTENT);
#ifdef SIGSTKFLT
REGISTER_LONG_CONSTANT("SIGSTKFLT",(zend_long) SIGSTKFLT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGCLD
REGISTER_LONG_CONSTANT("SIGCLD", (zend_long) SIGCLD, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGCHLD
REGISTER_LONG_CONSTANT("SIGCHLD", (zend_long) SIGCHLD, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SIGCONT", (zend_long) SIGCONT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGSTOP", (zend_long) SIGSTOP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTSTP", (zend_long) SIGTSTP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTTIN", (zend_long) SIGTTIN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTTOU", (zend_long) SIGTTOU, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGURG", (zend_long) SIGURG , CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGXCPU", (zend_long) SIGXCPU, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGXFSZ", (zend_long) SIGXFSZ, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGVTALRM",(zend_long) SIGVTALRM, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGPROF", (zend_long) SIGPROF, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGWINCH", (zend_long) SIGWINCH, CONST_CS | CONST_PERSISTENT);
#ifdef SIGPOLL
REGISTER_LONG_CONSTANT("SIGPOLL", (zend_long) SIGPOLL, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGIO
REGISTER_LONG_CONSTANT("SIGIO", (zend_long) SIGIO, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGPWR
REGISTER_LONG_CONSTANT("SIGPWR", (zend_long) SIGPWR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGSYS
REGISTER_LONG_CONSTANT("SIGSYS", (zend_long) SIGSYS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGBABY", (zend_long) SIGSYS, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGRTMIN
REGISTER_LONG_CONSTANT("SIGRTMIN", (zend_long) SIGRTMIN, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGRTMAX
REGISTER_LONG_CONSTANT("SIGRTMAX", (zend_long) SIGRTMAX, CONST_CS | CONST_PERSISTENT);
#endif
#if defined(HAVE_GETPRIORITY) || defined(HAVE_SETPRIORITY)
REGISTER_LONG_CONSTANT("PRIO_PGRP", PRIO_PGRP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PRIO_USER", PRIO_USER, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PRIO_PROCESS", PRIO_PROCESS, CONST_CS | CONST_PERSISTENT);
#if defined(PRIO_DARWIN_BG)
REGISTER_LONG_CONSTANT("PRIO_DARWIN_BG", PRIO_DARWIN_BG, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PRIO_DARWIN_THREAD", PRIO_DARWIN_THREAD, CONST_CS | CONST_PERSISTENT);
#endif
#endif
/* {{{ "how" argument for sigprocmask */
#ifdef HAVE_SIGPROCMASK
REGISTER_LONG_CONSTANT("SIG_BLOCK", SIG_BLOCK, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_UNBLOCK", SIG_UNBLOCK, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_SETMASK", SIG_SETMASK, CONST_CS | CONST_PERSISTENT);
#endif
/* }}} */
/* {{{ si_code */
#if defined(HAVE_SIGWAITINFO) && defined(HAVE_SIGTIMEDWAIT)
REGISTER_LONG_CONSTANT("SI_USER", SI_USER, CONST_CS | CONST_PERSISTENT);
#ifdef SI_NOINFO
REGISTER_LONG_CONSTANT("SI_NOINFO", SI_NOINFO, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SI_KERNEL
REGISTER_LONG_CONSTANT("SI_KERNEL", SI_KERNEL, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SI_QUEUE", SI_QUEUE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SI_TIMER", SI_TIMER, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SI_MESGQ", SI_MESGQ, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SI_ASYNCIO", SI_ASYNCIO, CONST_CS | CONST_PERSISTENT);
#ifdef SI_SIGIO
REGISTER_LONG_CONSTANT("SI_SIGIO", SI_SIGIO, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SI_TKILL
REGISTER_LONG_CONSTANT("SI_TKILL", SI_TKILL, CONST_CS | CONST_PERSISTENT);
#endif
/* si_code for SIGCHILD */
#ifdef CLD_EXITED
REGISTER_LONG_CONSTANT("CLD_EXITED", CLD_EXITED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLD_KILLED
REGISTER_LONG_CONSTANT("CLD_KILLED", CLD_KILLED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLD_DUMPED
REGISTER_LONG_CONSTANT("CLD_DUMPED", CLD_DUMPED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLD_TRAPPED
REGISTER_LONG_CONSTANT("CLD_TRAPPED", CLD_TRAPPED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLD_STOPPED
REGISTER_LONG_CONSTANT("CLD_STOPPED", CLD_STOPPED, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLD_CONTINUED
REGISTER_LONG_CONSTANT("CLD_CONTINUED", CLD_CONTINUED, CONST_CS | CONST_PERSISTENT);
#endif
/* si_code for SIGTRAP */
#ifdef TRAP_BRKPT
REGISTER_LONG_CONSTANT("TRAP_BRKPT", TRAP_BRKPT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef TRAP_TRACE
REGISTER_LONG_CONSTANT("TRAP_TRACE", TRAP_TRACE, CONST_CS | CONST_PERSISTENT);
#endif
/* si_code for SIGPOLL */
#ifdef POLL_IN
REGISTER_LONG_CONSTANT("POLL_IN", POLL_IN, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef POLL_OUT
REGISTER_LONG_CONSTANT("POLL_OUT", POLL_OUT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef POLL_MSG
REGISTER_LONG_CONSTANT("POLL_MSG", POLL_MSG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef POLL_ERR
REGISTER_LONG_CONSTANT("POLL_ERR", POLL_ERR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef POLL_PRI
REGISTER_LONG_CONSTANT("POLL_PRI", POLL_PRI, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef POLL_HUP
REGISTER_LONG_CONSTANT("POLL_HUP", POLL_HUP, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_ILLOPC
REGISTER_LONG_CONSTANT("ILL_ILLOPC", ILL_ILLOPC, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_ILLOPN
REGISTER_LONG_CONSTANT("ILL_ILLOPN", ILL_ILLOPN, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_ILLADR
REGISTER_LONG_CONSTANT("ILL_ILLADR", ILL_ILLADR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_ILLTRP
REGISTER_LONG_CONSTANT("ILL_ILLTRP", ILL_ILLTRP, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_PRVOPC
REGISTER_LONG_CONSTANT("ILL_PRVOPC", ILL_PRVOPC, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_PRVREG
REGISTER_LONG_CONSTANT("ILL_PRVREG", ILL_PRVREG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_COPROC
REGISTER_LONG_CONSTANT("ILL_COPROC", ILL_COPROC, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef ILL_BADSTK
REGISTER_LONG_CONSTANT("ILL_BADSTK", ILL_BADSTK, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_INTDIV
REGISTER_LONG_CONSTANT("FPE_INTDIV", FPE_INTDIV, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_INTOVF
REGISTER_LONG_CONSTANT("FPE_INTOVF", FPE_INTOVF, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTDIV
REGISTER_LONG_CONSTANT("FPE_FLTDIV", FPE_FLTDIV, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTOVF
REGISTER_LONG_CONSTANT("FPE_FLTOVF", FPE_FLTOVF, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTUND
REGISTER_LONG_CONSTANT("FPE_FLTUND", FPE_FLTINV, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTRES
REGISTER_LONG_CONSTANT("FPE_FLTRES", FPE_FLTRES, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTINV
REGISTER_LONG_CONSTANT("FPE_FLTINV", FPE_FLTINV, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef FPE_FLTSUB
REGISTER_LONG_CONSTANT("FPE_FLTSUB", FPE_FLTSUB, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SEGV_MAPERR
REGISTER_LONG_CONSTANT("SEGV_MAPERR", SEGV_MAPERR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SEGV_ACCERR
REGISTER_LONG_CONSTANT("SEGV_ACCERR", SEGV_ACCERR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef BUS_ADRALN
REGISTER_LONG_CONSTANT("BUS_ADRALN", BUS_ADRALN, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef BUS_ADRERR
REGISTER_LONG_CONSTANT("BUS_ADRERR", BUS_ADRERR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef BUS_OBJERR
REGISTER_LONG_CONSTANT("BUS_OBJERR", BUS_OBJERR, CONST_CS | CONST_PERSISTENT);
#endif
#endif /* defined(HAVE_SIGWAITINFO) && defined(HAVE_SIGTIMEDWAIT) */
/* }}} */
/* unshare(/clone) constants */
#ifdef HAVE_UNSHARE
REGISTER_LONG_CONSTANT("CLONE_NEWNS", CLONE_NEWNS, CONST_CS | CONST_PERSISTENT);
#ifdef CLONE_NEWIPC
REGISTER_LONG_CONSTANT("CLONE_NEWIPC", CLONE_NEWIPC, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLONE_NEWUTS
REGISTER_LONG_CONSTANT("CLONE_NEWUTS", CLONE_NEWUTS, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLONE_NEWNET
REGISTER_LONG_CONSTANT("CLONE_NEWNET", CLONE_NEWNET, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLONE_NEWPID
REGISTER_LONG_CONSTANT("CLONE_NEWPID", CLONE_NEWPID, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLONE_NEWUSER
REGISTER_LONG_CONSTANT("CLONE_NEWUSER", CLONE_NEWUSER, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef CLONE_NEWCGROUP
REGISTER_LONG_CONSTANT("CLONE_NEWCGROUP", CLONE_NEWCGROUP, CONST_CS | CONST_PERSISTENT);
#endif
#endif
#ifdef HAVE_RFORK
#ifdef RFPROC
REGISTER_LONG_CONSTANT("RFPROC", RFPROC, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFNOWAIT
REGISTER_LONG_CONSTANT("RFNOWAIT", RFNOWAIT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFCFDG
REGISTER_LONG_CONSTANT("RFCFDG", RFCFDG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFFDG
REGISTER_LONG_CONSTANT("RFFDG", RFFDG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFLINUXTHPN
REGISTER_LONG_CONSTANT("RFLINUXTHPN", RFLINUXTHPN, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFTSIGZMB
REGISTER_LONG_CONSTANT("RFTSIGZMB", RFTSIGZMB, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef RFTHREAD
REGISTER_LONG_CONSTANT("RFTHREAD", RFTHREAD, CONST_CS | CONST_PERSISTENT);
#endif
#endif
}
static void php_pcntl_register_errno_constants(INIT_FUNC_ARGS)
{
#ifdef EINTR
REGISTER_PCNTL_ERRNO_CONSTANT(EINTR);
#endif
#ifdef ECHILD
REGISTER_PCNTL_ERRNO_CONSTANT(ECHILD);
#endif
#ifdef EINVAL
REGISTER_PCNTL_ERRNO_CONSTANT(EINVAL);
#endif
#ifdef EAGAIN
REGISTER_PCNTL_ERRNO_CONSTANT(EAGAIN);
#endif
#ifdef ESRCH
REGISTER_PCNTL_ERRNO_CONSTANT(ESRCH);
#endif
#ifdef EACCES
REGISTER_PCNTL_ERRNO_CONSTANT(EACCES);
#endif
#ifdef EPERM
REGISTER_PCNTL_ERRNO_CONSTANT(EPERM);
#endif
#ifdef ENOMEM
REGISTER_PCNTL_ERRNO_CONSTANT(ENOMEM);
#endif
#ifdef E2BIG
REGISTER_PCNTL_ERRNO_CONSTANT(E2BIG);
#endif
#ifdef EFAULT
REGISTER_PCNTL_ERRNO_CONSTANT(EFAULT);
#endif
#ifdef EIO
REGISTER_PCNTL_ERRNO_CONSTANT(EIO);
#endif
#ifdef EISDIR
REGISTER_PCNTL_ERRNO_CONSTANT(EISDIR);
#endif
#ifdef ELIBBAD
REGISTER_PCNTL_ERRNO_CONSTANT(ELIBBAD);
#endif
#ifdef ELOOP
REGISTER_PCNTL_ERRNO_CONSTANT(ELOOP);
#endif
#ifdef EMFILE
REGISTER_PCNTL_ERRNO_CONSTANT(EMFILE);
#endif
#ifdef ENAMETOOLONG
REGISTER_PCNTL_ERRNO_CONSTANT(ENAMETOOLONG);
#endif
#ifdef ENFILE
REGISTER_PCNTL_ERRNO_CONSTANT(ENFILE);
#endif
#ifdef ENOENT
REGISTER_PCNTL_ERRNO_CONSTANT(ENOENT);
#endif
#ifdef ENOEXEC
REGISTER_PCNTL_ERRNO_CONSTANT(ENOEXEC);
#endif
#ifdef ENOTDIR
REGISTER_PCNTL_ERRNO_CONSTANT(ENOTDIR);
#endif
#ifdef ETXTBSY
REGISTER_PCNTL_ERRNO_CONSTANT(ETXTBSY);
#endif
#ifdef ENOSPC
REGISTER_PCNTL_ERRNO_CONSTANT(ENOSPC);
#endif
#ifdef EUSERS
REGISTER_PCNTL_ERRNO_CONSTANT(EUSERS);
#endif
}
static PHP_GINIT_FUNCTION(pcntl)
{
#if defined(COMPILE_DL_PCNTL) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
memset(pcntl_globals, 0, sizeof(*pcntl_globals));
}
PHP_RINIT_FUNCTION(pcntl)
{
php_add_tick_function(pcntl_signal_dispatch_tick_function, NULL);
zend_hash_init(&PCNTL_G(php_signal_table), 16, NULL, ZVAL_PTR_DTOR, 0);
PCNTL_G(head) = PCNTL_G(tail) = PCNTL_G(spares) = NULL;
PCNTL_G(async_signals) = 0;
PCNTL_G(last_error) = 0;
PCNTL_G(num_signals) = NSIG;
#ifdef SIGRTMAX
/* At least FreeBSD reports an incorrecrt NSIG that does not include realtime signals.
* As SIGRTMAX may be a dynamic value, adjust the value in INIT. */
if (NSIG < SIGRTMAX + 1) {
PCNTL_G(num_signals) = SIGRTMAX + 1;
}
#endif
return SUCCESS;
}
PHP_MINIT_FUNCTION(pcntl)
{
php_register_signal_constants(INIT_FUNC_ARGS_PASSTHRU);
php_pcntl_register_errno_constants(INIT_FUNC_ARGS_PASSTHRU);
orig_interrupt_function = zend_interrupt_function;
zend_interrupt_function = pcntl_interrupt_function;
return SUCCESS;
}
PHP_MSHUTDOWN_FUNCTION(pcntl)
{
return SUCCESS;
}
PHP_RSHUTDOWN_FUNCTION(pcntl)
{
struct php_pcntl_pending_signal *sig;
zend_long signo;
zval *handle;
/* Reset all signals to their default disposition */
ZEND_HASH_FOREACH_NUM_KEY_VAL(&PCNTL_G(php_signal_table), signo, handle) {
if (Z_TYPE_P(handle) != IS_LONG || Z_LVAL_P(handle) != (zend_long)SIG_DFL) {
php_signal(signo, (Sigfunc *)(zend_long)SIG_DFL, 0);
}
} ZEND_HASH_FOREACH_END();
zend_hash_destroy(&PCNTL_G(php_signal_table));
while (PCNTL_G(head)) {
sig = PCNTL_G(head);
PCNTL_G(head) = sig->next;
efree(sig);
}
while (PCNTL_G(spares)) {
sig = PCNTL_G(spares);
PCNTL_G(spares) = sig->next;
efree(sig);
}
return SUCCESS;
}
PHP_MINFO_FUNCTION(pcntl)
{
php_info_print_table_start();
php_info_print_table_header(2, "pcntl support", "enabled");
php_info_print_table_end();
}
/* {{{ Forks the currently running process following the same behavior as the UNIX fork() system call*/
PHP_FUNCTION(pcntl_fork)
{
pid_t id;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
id = fork();
if (id == -1) {
PCNTL_G(last_error) = errno;
php_error_docref(NULL, E_WARNING, "Error %d", errno);
} else if (id == 0) {
zend_max_execution_timer_init();
}
RETURN_LONG((zend_long) id);
}
/* }}} */
/* {{{ Set an alarm clock for delivery of a signal*/
PHP_FUNCTION(pcntl_alarm)
{
zend_long seconds;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &seconds) == FAILURE) {
RETURN_THROWS();
}
RETURN_LONG((zend_long) alarm(seconds));
}
/* }}} */
#define PHP_RUSAGE_PARA(from, to, field) \
add_assoc_long(to, #field, from.field)
#ifndef _OSD_POSIX
#define PHP_RUSAGE_SPECIAL(from, to) \
PHP_RUSAGE_PARA(from, to, ru_oublock); \
PHP_RUSAGE_PARA(from, to, ru_inblock); \
PHP_RUSAGE_PARA(from, to, ru_msgsnd); \
PHP_RUSAGE_PARA(from, to, ru_msgrcv); \
PHP_RUSAGE_PARA(from, to, ru_maxrss); \
PHP_RUSAGE_PARA(from, to, ru_ixrss); \
PHP_RUSAGE_PARA(from, to, ru_idrss); \
PHP_RUSAGE_PARA(from, to, ru_minflt); \
PHP_RUSAGE_PARA(from, to, ru_majflt); \
PHP_RUSAGE_PARA(from, to, ru_nsignals); \
PHP_RUSAGE_PARA(from, to, ru_nvcsw); \
PHP_RUSAGE_PARA(from, to, ru_nivcsw); \
PHP_RUSAGE_PARA(from, to, ru_nswap);
#else /*_OSD_POSIX*/
#define PHP_RUSAGE_SPECIAL(from, to)
#endif
#define PHP_RUSAGE_COMMON(from ,to) \
PHP_RUSAGE_PARA(from, to, ru_utime.tv_usec); \
PHP_RUSAGE_PARA(from, to, ru_utime.tv_sec); \
PHP_RUSAGE_PARA(from, to, ru_stime.tv_usec); \
PHP_RUSAGE_PARA(from, to, ru_stime.tv_sec);
#define PHP_RUSAGE_TO_ARRAY(from, to) \
if (to) { \
PHP_RUSAGE_SPECIAL(from, to) \
PHP_RUSAGE_COMMON(from, to); \
}
/* {{{ Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_waitpid)
{
zend_long pid, options = 0;
zval *z_status = NULL, *z_rusage = NULL;
int status;
pid_t child_id;
#ifdef HAVE_WAIT4
struct rusage rusage;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS(), "lz|lz", &pid, &z_status, &options, &z_rusage) == FAILURE) {
RETURN_THROWS();
}
status = zval_get_long(z_status);
#ifdef HAVE_WAIT4
if (z_rusage) {
z_rusage = zend_try_array_init(z_rusage);
if (!z_rusage) {
RETURN_THROWS();
}
memset(&rusage, 0, sizeof(struct rusage));
child_id = wait4((pid_t) pid, &status, options, &rusage);
} else {
child_id = waitpid((pid_t) pid, &status, options);
}
#else
child_id = waitpid((pid_t) pid, &status, options);
#endif
if (child_id < 0) {
PCNTL_G(last_error) = errno;
}
#ifdef HAVE_WAIT4
if (child_id > 0) {
PHP_RUSAGE_TO_ARRAY(rusage, z_rusage);
}
#endif
ZEND_TRY_ASSIGN_REF_LONG(z_status, status);
RETURN_LONG((zend_long) child_id);
}
/* }}} */
/* {{{ Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_wait)
{
zend_long options = 0;
zval *z_status = NULL, *z_rusage = NULL;
int status;
pid_t child_id;
#ifdef HAVE_WAIT3
struct rusage rusage;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|lz", &z_status, &options, &z_rusage) == FAILURE) {
RETURN_THROWS();
}
status = zval_get_long(z_status);
#ifdef HAVE_WAIT3
if (z_rusage) {
z_rusage = zend_try_array_init(z_rusage);
if (!z_rusage) {
RETURN_THROWS();
}
memset(&rusage, 0, sizeof(struct rusage));
child_id = wait3(&status, options, &rusage);
} else if (options) {
child_id = wait3(&status, options, NULL);
} else {
child_id = wait(&status);
}
#else
child_id = wait(&status);
#endif
if (child_id < 0) {
PCNTL_G(last_error) = errno;
}
#ifdef HAVE_WAIT3
if (child_id > 0) {
PHP_RUSAGE_TO_ARRAY(rusage, z_rusage);
}
#endif
ZEND_TRY_ASSIGN_REF_LONG(z_status, status);
RETURN_LONG((zend_long) child_id);
}
/* }}} */
#undef PHP_RUSAGE_PARA
#undef PHP_RUSAGE_SPECIAL
#undef PHP_RUSAGE_COMMON
#undef PHP_RUSAGE_TO_ARRAY
/* {{{ Returns true if the child status code represents a successful exit */
PHP_FUNCTION(pcntl_wifexited)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WIFEXITED
int int_status_word = (int) status_word;
if (WIFEXITED(int_status_word)) {
RETURN_TRUE;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ Returns true if the child status code represents a stopped process (WUNTRACED must have been used with waitpid) */
PHP_FUNCTION(pcntl_wifstopped)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WIFSTOPPED
int int_status_word = (int) status_word;
if (WIFSTOPPED(int_status_word)) {
RETURN_TRUE;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ Returns true if the child status code represents a process that was terminated due to a signal */
PHP_FUNCTION(pcntl_wifsignaled)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WIFSIGNALED
int int_status_word = (int) status_word;
if (WIFSIGNALED(int_status_word)) {
RETURN_TRUE;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ Returns true if the child status code represents a process that was resumed due to a SIGCONT signal */
PHP_FUNCTION(pcntl_wifcontinued)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef HAVE_WCONTINUED
int int_status_word = (int) status_word;
if (WIFCONTINUED(int_status_word)) {
RETURN_TRUE;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ Returns the status code of a child's exit */
PHP_FUNCTION(pcntl_wexitstatus)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WEXITSTATUS
int int_status_word = (int) status_word;
RETURN_LONG(WEXITSTATUS(int_status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ Returns the number of the signal that terminated the process who's status code is passed */
PHP_FUNCTION(pcntl_wtermsig)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WTERMSIG
int int_status_word = (int) status_word;
RETURN_LONG(WTERMSIG(int_status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ Returns the number of the signal that caused the process to stop who's status code is passed */
PHP_FUNCTION(pcntl_wstopsig)
{
zend_long status_word;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &status_word) == FAILURE) {
RETURN_THROWS();
}
#ifdef WSTOPSIG
int int_status_word = (int) status_word;
RETURN_LONG(WSTOPSIG(int_status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ Executes specified program in current process space as defined by exec(2) */
PHP_FUNCTION(pcntl_exec)
{
zval *args = NULL, *envs = NULL;
zval *element;
HashTable *args_hash, *envs_hash;
int argc = 0, argi = 0;
int envc = 0, envi = 0;
char **argv = NULL, **envp = NULL;
char **current_arg, **pair;
size_t pair_length;
zend_string *key;
char *path;
size_t path_len;
zend_ulong key_num;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|aa", &path, &path_len, &args, &envs) == FAILURE) {
RETURN_THROWS();
}
if (ZEND_NUM_ARGS() > 1) {
/* Build argument list */
SEPARATE_ARRAY(args);
args_hash = Z_ARRVAL_P(args);
argc = zend_hash_num_elements(args_hash);
argv = safe_emalloc((argc + 2), sizeof(char *), 0);
*argv = path;
current_arg = argv+1;
ZEND_HASH_FOREACH_VAL(args_hash, element) {
if (argi >= argc) break;
if (!try_convert_to_string(element)) {
efree(argv);
RETURN_THROWS();
}
*current_arg = Z_STRVAL_P(element);
argi++;
current_arg++;
} ZEND_HASH_FOREACH_END();
*current_arg = NULL;
} else {
argv = emalloc(2 * sizeof(char *));
argv[0] = path;
argv[1] = NULL;
}
if ( ZEND_NUM_ARGS() == 3 ) {
/* Build environment pair list */
SEPARATE_ARRAY(envs);
envs_hash = Z_ARRVAL_P(envs);
envc = zend_hash_num_elements(envs_hash);
pair = envp = safe_emalloc((envc + 1), sizeof(char *), 0);
ZEND_HASH_FOREACH_KEY_VAL(envs_hash, key_num, key, element) {
if (envi >= envc) break;
if (!key) {
key = zend_long_to_str(key_num);
} else {
zend_string_addref(key);
}
if (!try_convert_to_string(element)) {
zend_string_release(key);
efree(argv);
efree(envp);
RETURN_THROWS();
}
/* Length of element + equal sign + length of key + null */
ZEND_ASSERT(Z_STRLEN_P(element) < SIZE_MAX && ZSTR_LEN(key) < SIZE_MAX);
*pair = safe_emalloc(Z_STRLEN_P(element) + 1, sizeof(char), ZSTR_LEN(key) + 1);
pair_length = Z_STRLEN_P(element) + ZSTR_LEN(key) + 2;
strlcpy(*pair, ZSTR_VAL(key), ZSTR_LEN(key) + 1);
strlcat(*pair, "=", pair_length);
strlcat(*pair, Z_STRVAL_P(element), pair_length);
/* Cleanup */
zend_string_release_ex(key, 0);
envi++;
pair++;
} ZEND_HASH_FOREACH_END();
*(pair) = NULL;
if (execve(path, argv, envp) == -1) {
PCNTL_G(last_error) = errno;
php_error_docref(NULL, E_WARNING, "Error has occurred: (errno %d) %s", errno, strerror(errno));
}
/* Cleanup */
for (pair = envp; *pair != NULL; pair++) efree(*pair);
efree(envp);
} else {
if (execv(path, argv) == -1) {
PCNTL_G(last_error) = errno;
php_error_docref(NULL, E_WARNING, "Error has occurred: (errno %d) %s", errno, strerror(errno));
}
}
efree(argv);
RETURN_FALSE;
}
/* }}} */
/* {{{ Assigns a system signal handler to a PHP function */
PHP_FUNCTION(pcntl_signal)
{
zval *handle;
zend_long signo;
bool restart_syscalls = 1;
bool restart_syscalls_is_null = 1;
char *error = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "lz|b!", &signo, &handle, &restart_syscalls, &restart_syscalls_is_null) == FAILURE) {
RETURN_THROWS();
}
if (signo < 1) {
zend_argument_value_error(1, "must be greater than or equal to 1");
RETURN_THROWS();
}
if (signo >= PCNTL_G(num_signals)) {
zend_argument_value_error(1, "must be less than %d", PCNTL_G(num_signals));
RETURN_THROWS();
}
if (!PCNTL_G(spares)) {
/* since calling malloc() from within a signal handler is not portable,
* pre-allocate a few records for recording signals */
int i;
for (i = 0; i < PCNTL_G(num_signals); i++) {
struct php_pcntl_pending_signal *psig;
psig = emalloc(sizeof(*psig));
psig->next = PCNTL_G(spares);
PCNTL_G(spares) = psig;
}
}
/* If restart_syscalls was not explicitly specified and the signal is SIGALRM, then default
* restart_syscalls to false. PHP used to enforce that restart_syscalls is false for SIGALRM,
* so we keep this differing default to reduce the degree of BC breakage. */
if (restart_syscalls_is_null && signo == SIGALRM) {
restart_syscalls = 0;
}
/* Special long value case for SIG_DFL and SIG_IGN */
if (Z_TYPE_P(handle) == IS_LONG) {
if (Z_LVAL_P(handle) != (zend_long) SIG_DFL && Z_LVAL_P(handle) != (zend_long) SIG_IGN) {
zend_argument_value_error(2, "must be either SIG_DFL or SIG_IGN when an integer value is given");
RETURN_THROWS();
}
if (php_signal(signo, (Sigfunc *) Z_LVAL_P(handle), (int) restart_syscalls) == (void *)SIG_ERR) {
PCNTL_G(last_error) = errno;
php_error_docref(NULL, E_WARNING, "Error assigning signal");
RETURN_FALSE;
}
zend_hash_index_update(&PCNTL_G(php_signal_table), signo, handle);
RETURN_TRUE;
}
if (!zend_is_callable_ex(handle, NULL, 0, NULL, NULL, &error)) {
zend_string *func_name = zend_get_callable_name(handle);
PCNTL_G(last_error) = EINVAL;
zend_argument_type_error(2, "must be of type callable|int, %s given", zend_zval_type_name(handle));
zend_string_release_ex(func_name, 0);
efree(error);
RETURN_THROWS();
}
ZEND_ASSERT(!error);