/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- ZEND_GET_MODULE
- PHP_GINIT_FUNCTION
- PHP_RINIT_FUNCTION
- PHP_MINIT_FUNCTION
- PHP_MSHUTDOWN_FUNCTION
- PHP_RSHUTDOWN_FUNCTION
- PHP_MINFO_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- PHP_FUNCTION
- pcntl_signal_handler
- pcntl_tick_handler
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2008 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: |
| http://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> |
+----------------------------------------------------------------------+
*/
/* $Id: pcntl.c,v 1.48.2.2.2.6 2007/12/31 07:20:09 sebastian Exp $ */
#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"
#if HAVE_GETPRIORITY || HAVE_SETPRIORITY || HAVE_WAIT3
#include <sys/time.h>
#include <sys/resource.h>
#endif
ZEND_DECLARE_MODULE_GLOBALS(pcntl)
static PHP_GINIT_FUNCTION(pcntl);
zend_function_entry pcntl_functions[] = {
PHP_FE(pcntl_fork, NULL)
PHP_FE(pcntl_waitpid, second_arg_force_ref)
PHP_FE(pcntl_wait, first_arg_force_ref)
PHP_FE(pcntl_signal, NULL)
PHP_FE(pcntl_wifexited, NULL)
PHP_FE(pcntl_wifstopped, NULL)
PHP_FE(pcntl_wifsignaled, NULL)
PHP_FE(pcntl_wexitstatus, NULL)
PHP_FE(pcntl_wtermsig, NULL)
PHP_FE(pcntl_wstopsig, NULL)
PHP_FE(pcntl_exec, NULL)
PHP_FE(pcntl_alarm, NULL)
#ifdef HAVE_GETPRIORITY
PHP_FE(pcntl_getpriority, NULL)
#endif
#ifdef HAVE_SETPRIORITY
PHP_FE(pcntl_setpriority, NULL)
#endif
{NULL, NULL, NULL}
};
zend_module_entry pcntl_module_entry = {
STANDARD_MODULE_HEADER,
"pcntl",
pcntl_functions,
PHP_MINIT(pcntl),
PHP_MSHUTDOWN(pcntl),
PHP_RINIT(pcntl),
PHP_RSHUTDOWN(pcntl),
PHP_MINFO(pcntl),
NO_VERSION_YET,
PHP_MODULE_GLOBALS(pcntl),
PHP_GINIT(pcntl),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
#ifdef COMPILE_DL_PCNTL
ZEND_GET_MODULE(pcntl)
# ifdef PHP_WIN32
# include "zend_arg_defs.c"
# endif
#endif
static void pcntl_signal_handler(int);
static void pcntl_tick_handler();
void php_register_signal_constants(INIT_FUNC_ARGS)
{
/* Wait Constants */
#ifdef WNOHANG
REGISTER_LONG_CONSTANT("WNOHANG", (long) WNOHANG, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef WUNTRACED
REGISTER_LONG_CONSTANT("WUNTRACED", (long) WUNTRACED, CONST_CS | CONST_PERSISTENT);
#endif
/* Signal Constants */
REGISTER_LONG_CONSTANT("SIG_IGN", (long) SIG_IGN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_DFL", (long) SIG_DFL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIG_ERR", (long) SIG_ERR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGHUP", (long) SIGHUP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGINT", (long) SIGINT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGQUIT", (long) SIGQUIT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGILL", (long) SIGILL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTRAP", (long) SIGTRAP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGABRT", (long) SIGABRT, CONST_CS | CONST_PERSISTENT);
#ifdef SIGIOT
REGISTER_LONG_CONSTANT("SIGIOT", (long) SIGIOT, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SIGBUS", (long) SIGBUS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGFPE", (long) SIGFPE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGKILL", (long) SIGKILL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGUSR1", (long) SIGUSR1, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGSEGV", (long) SIGSEGV, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGUSR2", (long) SIGUSR2, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGPIPE", (long) SIGPIPE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGALRM", (long) SIGALRM, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTERM", (long) SIGTERM, CONST_CS | CONST_PERSISTENT);
#ifdef SIGSTKFLT
REGISTER_LONG_CONSTANT("SIGSTKFLT",(long) SIGSTKFLT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGCLD
REGISTER_LONG_CONSTANT("SIGCLD", (long) SIGCLD, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGCHLD
REGISTER_LONG_CONSTANT("SIGCHLD", (long) SIGCHLD, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SIGCONT", (long) SIGCONT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGSTOP", (long) SIGSTOP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTSTP", (long) SIGTSTP, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTTIN", (long) SIGTTIN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGTTOU", (long) SIGTTOU, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGURG", (long) SIGURG , CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGXCPU", (long) SIGXCPU, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGXFSZ", (long) SIGXFSZ, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGVTALRM",(long) SIGVTALRM, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGPROF", (long) SIGPROF, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGWINCH", (long) SIGWINCH, CONST_CS | CONST_PERSISTENT);
#ifdef SIGPOLL
REGISTER_LONG_CONSTANT("SIGPOLL", (long) SIGPOLL, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("SIGIO", (long) SIGIO, CONST_CS | CONST_PERSISTENT);
#ifdef SIGPWR
REGISTER_LONG_CONSTANT("SIGPWR", (long) SIGPWR, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef SIGSYS
REGISTER_LONG_CONSTANT("SIGSYS", (long) SIGSYS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("SIGBABY", (long) SIGSYS, CONST_CS | CONST_PERSISTENT);
#endif
#if HAVE_GETPRIORITY || 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);
#endif
}
static PHP_GINIT_FUNCTION(pcntl)
{
memset(pcntl_globals, 0, sizeof(*pcntl_globals));
}
PHP_RINIT_FUNCTION(pcntl)
{
zend_hash_init(&PCNTL_G(php_signal_table), 16, NULL, ZVAL_PTR_DTOR, 0);
PCNTL_G(head) = PCNTL_G(tail) = PCNTL_G(spares) = NULL;
return SUCCESS;
}
PHP_MINIT_FUNCTION(pcntl)
{
php_register_signal_constants(INIT_FUNC_ARGS_PASSTHRU);
php_add_tick_function(pcntl_tick_handler);
return SUCCESS;
}
PHP_MSHUTDOWN_FUNCTION(pcntl)
{
return SUCCESS;
}
PHP_RSHUTDOWN_FUNCTION(pcntl)
{
struct php_pcntl_pending_signal *sig;
/* FIXME: if a signal is delivered after this point, things will go pear shaped;
* need to remove signal handlers */
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();
}
/* {{{ proto int pcntl_fork(void)
Forks the currently running process following the same behavior as the UNIX fork() system call*/
PHP_FUNCTION(pcntl_fork)
{
pid_t id;
id = fork();
if (id == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d", errno);
}
RETURN_LONG((long) id);
}
/* }}} */
/* {{{ proto int pcntl_alarm(int seconds)
Set an alarm clock for delivery of a signal*/
PHP_FUNCTION(pcntl_alarm)
{
long seconds;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &seconds) == FAILURE)
return;
RETURN_LONG ((long) alarm(seconds));
}
/* }}} */
/* {{{ proto int pcntl_waitpid(int pid, int &status, int options)
Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_waitpid)
{
long pid, options = 0;
zval *z_status = NULL;
int status;
pid_t child_id;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lz|l", &pid, &z_status, &options) == FAILURE)
return;
convert_to_long_ex(&z_status);
status = Z_LVAL_P(z_status);
child_id = waitpid((pid_t) pid, &status, options);
Z_LVAL_P(z_status) = status;
RETURN_LONG((long) child_id);
}
/* }}} */
/* {{{ proto int pcntl_wait(int &status)
Waits on or returns the status of a forked child as defined by the waitpid() system call */
PHP_FUNCTION(pcntl_wait)
{
long options = 0;
zval *z_status = NULL;
int status;
pid_t child_id;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|l", &z_status, &options) == FAILURE)
return;
convert_to_long_ex(&z_status);
status = Z_LVAL_P(z_status);
#ifdef HAVE_WAIT3
if(options) {
child_id = wait3(&status, options, NULL);
}
else {
child_id = wait(&status);
}
#else
child_id = wait(&status);
#endif
Z_LVAL_P(z_status) = status;
RETURN_LONG((long) child_id);
}
/* }}} */
/* {{{ proto bool pcntl_wifexited(int status)
Returns true if the child status code represents a successful exit */
PHP_FUNCTION(pcntl_wifexited)
{
#ifdef WIFEXITED
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
if (WIFEXITED(status_word)) RETURN_TRUE;
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ proto bool pcntl_wifstopped(int status)
Returns true if the child status code represents a stopped process (WUNTRACED must have been used with waitpid) */
PHP_FUNCTION(pcntl_wifstopped)
{
#ifdef WIFSTOPPED
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
if (WIFSTOPPED(status_word)) RETURN_TRUE;
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ proto bool pcntl_wifsignaled(int status)
Returns true if the child status code represents a process that was terminated due to a signal */
PHP_FUNCTION(pcntl_wifsignaled)
{
#ifdef WIFSIGNALED
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
if (WIFSIGNALED(status_word)) RETURN_TRUE;
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ proto int pcntl_wexitstatus(int status)
Returns the status code of a child's exit */
PHP_FUNCTION(pcntl_wexitstatus)
{
#ifdef WEXITSTATUS
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
/* WEXITSTATUS only returns 8 bits so we *MUST* cast this to signed char
if you want to have valid negative exit codes */
RETURN_LONG((signed char) WEXITSTATUS(status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ proto int pcntl_wtermsig(int status)
Returns the number of the signal that terminated the process who's status code is passed */
PHP_FUNCTION(pcntl_wtermsig)
{
#ifdef WTERMSIG
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
RETURN_LONG(WTERMSIG(status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ proto int pcntl_wstopsig(int status)
Returns the number of the signal that caused the process to stop who's status code is passed */
PHP_FUNCTION(pcntl_wstopsig)
{
#ifdef WSTOPSIG
zval **status;
int status_word;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &status) == FAILURE) {
WRONG_PARAM_COUNT;
}
status_word = (int) Z_LVAL_PP(status);
RETURN_LONG(WSTOPSIG(status_word));
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ proto bool pcntl_exec(string path [, array args [, array envs]])
Executes specified program in current process space as defined by exec(2) */
PHP_FUNCTION(pcntl_exec)
{
zval *args, *envs;
zval **element;
HashTable *args_hash, *envs_hash;
int argc = 0, argi = 0;
int envc = 0, envi = 0;
int return_val = 0;
char **argv = NULL, **envp = NULL;
char **current_arg, **pair;
int pair_length;
char *key;
int key_length;
char *path;
int path_len;
long key_num;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|aa", &path, &path_len, &args, &envs) == FAILURE) {
return;
}
if (ZEND_NUM_ARGS() > 1) {
/* Build argumnent list */
args_hash = HASH_OF(args);
argc = zend_hash_num_elements(args_hash);
argv = safe_emalloc((argc + 2), sizeof(char *), 0);
*argv = path;
for ( zend_hash_internal_pointer_reset(args_hash), current_arg = argv+1;
(argi < argc && (zend_hash_get_current_data(args_hash, (void **) &element) == SUCCESS));
(argi++, current_arg++, zend_hash_move_forward(args_hash)) ) {
convert_to_string_ex(element);
*current_arg = Z_STRVAL_PP(element);
}
*(current_arg) = NULL;
} else {
argv = emalloc(2 * sizeof(char *));
*argv = path;
*(argv+1) = NULL;
}
if ( ZEND_NUM_ARGS() == 3 ) {
/* Build environment pair list */
envs_hash = HASH_OF(envs);
envc = zend_hash_num_elements(envs_hash);
envp = safe_emalloc((envc + 1), sizeof(char *), 0);
for ( zend_hash_internal_pointer_reset(envs_hash), pair = envp;
(envi < envc && (zend_hash_get_current_data(envs_hash, (void **) &element) == SUCCESS));
(envi++, pair++, zend_hash_move_forward(envs_hash)) ) {
switch (return_val = zend_hash_get_current_key_ex(envs_hash, &key, &key_length, &key_num, 0, NULL)) {
case HASH_KEY_IS_LONG:
key = emalloc(101);
snprintf(key, 100, "%ld", key_num);
key_length = strlen(key);
break;
case HASH_KEY_NON_EXISTANT:
pair--;
continue;
}
convert_to_string_ex(element);
/* Length of element + equal sign + length of key + null */
pair_length = Z_STRLEN_PP(element) + key_length + 2;
*pair = emalloc(pair_length);
strlcpy(*pair, key, key_length);
strlcat(*pair, "=", pair_length);
strlcat(*pair, Z_STRVAL_PP(element), pair_length);
/* Cleanup */
if (return_val == HASH_KEY_IS_LONG) efree(key);
}
*(pair) = NULL;
}
if (execve(path, argv, envp) == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error has occured: (errno %d) %s", errno, strerror(errno));
}
/* Cleanup */
if (envp != NULL) {
for (pair = envp; *pair != NULL; pair++) efree(*pair);
efree(envp);
}
efree(argv);
RETURN_FALSE;
}
/* }}} */
/* {{{ proto bool pcntl_signal(int signo, callback handle [, bool restart_syscalls])
Assigns a system signal handler to a PHP function */
PHP_FUNCTION(pcntl_signal)
{
zval *handle, **dest_handle = NULL;
char *func_name;
long signo;
zend_bool restart_syscalls = 1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lz|b", &signo, &handle, &restart_syscalls) == FAILURE) {
return;
}
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 < 32; i++) {
struct php_pcntl_pending_signal *psig;
psig = emalloc(sizeof(*psig));
psig->next = PCNTL_G(spares);
PCNTL_G(spares) = psig;
}
}
/* Special long value case for SIG_DFL and SIG_IGN */
if (Z_TYPE_P(handle)==IS_LONG) {
if (Z_LVAL_P(handle)!= (long) SIG_DFL && Z_LVAL_P(handle) != (long) SIG_IGN) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid value for handle argument specified");
}
if (php_signal(signo, (Sigfunc *) Z_LVAL_P(handle), (int) restart_syscalls) == SIG_ERR) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error assigning signal");
RETURN_FALSE;
}
RETURN_TRUE;
}
if (!zend_is_callable(handle, 0, &func_name)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s is not a callable function name error", func_name);
efree(func_name);
RETURN_FALSE;
}
efree(func_name);
/* Add the function name to our signal table */
zend_hash_index_update(&PCNTL_G(php_signal_table), signo, (void **) &handle, sizeof(zval *), (void **) &dest_handle);
if (dest_handle) zval_add_ref(dest_handle);
if (php_signal(signo, pcntl_signal_handler, (int) restart_syscalls) == SIG_ERR) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error assigning signal");
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#ifdef HAVE_GETPRIORITY
/* {{{ proto int pcntl_getpriority([int pid [, int process_identifier]])
Get the priority of any process */
PHP_FUNCTION(pcntl_getpriority)
{
long who = PRIO_PROCESS;
long pid = getpid();
int pri;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|ll", &pid, &who) == FAILURE) {
RETURN_FALSE;
}
/* needs to be cleared, since any returned value is valid */
errno = 0;
pri = getpriority(who, pid);
if (errno) {
switch (errno) {
case ESRCH:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: No process was located using the given parameters", errno);
break;
case EINVAL:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Invalid identifier flag", errno);
break;
default:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown error %d has occured", errno);
break;
}
RETURN_FALSE;
}
RETURN_LONG(pri);
}
/* }}} */
#endif
#ifdef HAVE_SETPRIORITY
/* {{{ proto bool pcntl_setpriority(int priority [, int pid [, int process_identifier]])
Change the priority of any process */
PHP_FUNCTION(pcntl_setpriority)
{
long who = PRIO_PROCESS;
long pid = getpid();
long pri;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|ll", &pri, &pid, &who) == FAILURE) {
RETURN_FALSE;
}
if (setpriority(who, pid, pri)) {
switch (errno) {
case ESRCH:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: No process was located using the given parameters", errno);
break;
case EINVAL:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Invalid identifier flag", errno);
break;
case EPERM:
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);
break;
case EACCES:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error %d: Only a super user may attempt to increase the process priority", errno);
break;
default:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown error %d has occured", errno);
break;
}
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#endif
/* Our custom signal handler that calls the appropriate php_function */
static void pcntl_signal_handler(int signo)
{
struct php_pcntl_pending_signal *psig;
TSRMLS_FETCH();
psig = PCNTL_G(spares);
if (!psig) {
/* oops, too many signals for us to track, so we'll forget about this one */
return;
}
PCNTL_G(spares) = psig->next;
psig->signo = signo;
psig->next = NULL;
/* the head check is important, as the tick handler cannot atomically clear both
* the head and tail */
if (PCNTL_G(head) && PCNTL_G(tail)) {
PCNTL_G(tail)->next = psig;
} else {
PCNTL_G(head) = psig;
}
PCNTL_G(tail) = psig;
}
void pcntl_tick_handler()
{
zval *param, **handle, *retval;
struct php_pcntl_pending_signal *queue, *next;
TSRMLS_FETCH();
/* Bail if the queue is empty or if we are already playing the queue*/
if (! PCNTL_G(head) || PCNTL_G(processing_signal_queue))
return;
/* Prevent reentrant handler calls */
PCNTL_G(processing_signal_queue) = 1;
queue = PCNTL_G(head);
PCNTL_G(head) = NULL; /* simple stores are atomic */
/* Allocate */
while (queue) {
if (zend_hash_index_find(&PCNTL_G(php_signal_table), queue->signo, (void **) &handle)==SUCCESS) {
MAKE_STD_ZVAL(retval);
MAKE_STD_ZVAL(param);
ZVAL_NULL(retval);
ZVAL_LONG(param, queue->signo);
/* Call php signal handler - Note that we do not report errors, and we ignore the return value */
/* FIXME: this is probably broken when multiple signals are handled in this while loop (retval) */
call_user_function(EG(function_table), NULL, *handle, retval, 1, ¶m TSRMLS_CC);
zval_ptr_dtor(¶m);
zval_ptr_dtor(&retval);
}
next = queue->next;
queue->next = PCNTL_G(spares);
PCNTL_G(spares) = queue;
queue = next;
}
/* Re-enable queue */
PCNTL_G(processing_signal_queue) = 0;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/