mirror of
https://github.com/php/php-src.git
synced 2024-12-30 20:23:28 +08:00
378 lines
8.7 KiB
C
378 lines
8.7 KiB
C
/*
|
|
+----------------------------------------------------------------------+
|
|
| PHP version 5 |
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) 1997-2012 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. |
|
|
+----------------------------------------------------------------------+
|
|
| Authors: Slava Poliakov <hackie@prohost.org> |
|
|
| Ilia Alshanetsky <ilia@prohost.org> |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
/* $Id$ */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "php.h"
|
|
#include "php_ini.h"
|
|
#include "php_shmop.h"
|
|
# ifndef PHP_WIN32
|
|
# include <sys/ipc.h>
|
|
# include <sys/shm.h>
|
|
#else
|
|
#include "tsrm_win32.h"
|
|
#endif
|
|
|
|
|
|
#if HAVE_SHMOP
|
|
|
|
#include "ext/standard/info.h"
|
|
|
|
#ifdef ZTS
|
|
int shmop_globals_id;
|
|
#else
|
|
php_shmop_globals shmop_globals;
|
|
#endif
|
|
|
|
int shm_type;
|
|
|
|
/* {{{ arginfo */
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_open, 0, 0, 4)
|
|
ZEND_ARG_INFO(0, key)
|
|
ZEND_ARG_INFO(0, flags)
|
|
ZEND_ARG_INFO(0, mode)
|
|
ZEND_ARG_INFO(0, size)
|
|
ZEND_END_ARG_INFO()
|
|
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_read, 0, 0, 3)
|
|
ZEND_ARG_INFO(0, shmid)
|
|
ZEND_ARG_INFO(0, start)
|
|
ZEND_ARG_INFO(0, count)
|
|
ZEND_END_ARG_INFO()
|
|
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_close, 0, 0, 1)
|
|
ZEND_ARG_INFO(0, shmid)
|
|
ZEND_END_ARG_INFO()
|
|
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_size, 0, 0, 1)
|
|
ZEND_ARG_INFO(0, shmid)
|
|
ZEND_END_ARG_INFO()
|
|
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_write, 0, 0, 3)
|
|
ZEND_ARG_INFO(0, shmid)
|
|
ZEND_ARG_INFO(0, data)
|
|
ZEND_ARG_INFO(0, offset)
|
|
ZEND_END_ARG_INFO()
|
|
|
|
ZEND_BEGIN_ARG_INFO_EX(arginfo_shmop_delete, 0, 0, 1)
|
|
ZEND_ARG_INFO(0, shmid)
|
|
ZEND_END_ARG_INFO()
|
|
/* }}} */
|
|
|
|
/* {{{ shmop_functions[]
|
|
*/
|
|
const zend_function_entry shmop_functions[] = {
|
|
PHP_FE(shmop_open, arginfo_shmop_open)
|
|
PHP_FE(shmop_read, arginfo_shmop_read)
|
|
PHP_FE(shmop_close, arginfo_shmop_close)
|
|
PHP_FE(shmop_size, arginfo_shmop_size)
|
|
PHP_FE(shmop_write, arginfo_shmop_write)
|
|
PHP_FE(shmop_delete, arginfo_shmop_delete)
|
|
PHP_FE_END
|
|
};
|
|
/* }}} */
|
|
|
|
/* {{{ shmop_module_entry
|
|
*/
|
|
zend_module_entry shmop_module_entry = {
|
|
STANDARD_MODULE_HEADER,
|
|
"shmop",
|
|
shmop_functions,
|
|
PHP_MINIT(shmop),
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
PHP_MINFO(shmop),
|
|
NO_VERSION_YET,
|
|
STANDARD_MODULE_PROPERTIES
|
|
};
|
|
/* }}} */
|
|
|
|
#ifdef COMPILE_DL_SHMOP
|
|
ZEND_GET_MODULE(shmop)
|
|
#endif
|
|
|
|
#define PHP_SHMOP_GET_RES \
|
|
shmop = zend_list_find(shmid, &type); \
|
|
if (!shmop) { \
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "no shared memory segment with an id of [%lu]", shmid); \
|
|
RETURN_FALSE; \
|
|
} else if (type != shm_type) { \
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "not a shmop resource"); \
|
|
RETURN_FALSE; \
|
|
} \
|
|
|
|
/* {{{ rsclean
|
|
*/
|
|
static void rsclean(zend_rsrc_list_entry *rsrc TSRMLS_DC)
|
|
{
|
|
struct php_shmop *shmop = (struct php_shmop *)rsrc->ptr;
|
|
|
|
shmdt(shmop->addr);
|
|
efree(shmop);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ PHP_MINIT_FUNCTION
|
|
*/
|
|
PHP_MINIT_FUNCTION(shmop)
|
|
{
|
|
shm_type = zend_register_list_destructors_ex(rsclean, NULL, "shmop", module_number);
|
|
|
|
return SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ PHP_MINFO_FUNCTION
|
|
*/
|
|
PHP_MINFO_FUNCTION(shmop)
|
|
{
|
|
php_info_print_table_start();
|
|
php_info_print_table_row(2, "shmop support", "enabled");
|
|
php_info_print_table_end();
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto int shmop_open (int key, string flags, int mode, int size)
|
|
gets and attaches a shared memory segment */
|
|
PHP_FUNCTION(shmop_open)
|
|
{
|
|
long key, mode, size;
|
|
struct php_shmop *shmop;
|
|
struct shmid_ds shm;
|
|
int rsid;
|
|
char *flags;
|
|
int flags_len;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lsll", &key, &flags, &flags_len, &mode, &size) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
if (flags_len != 1) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s is not a valid flag", flags);
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
shmop = emalloc(sizeof(struct php_shmop));
|
|
memset(shmop, 0, sizeof(struct php_shmop));
|
|
|
|
shmop->key = key;
|
|
shmop->shmflg |= mode;
|
|
|
|
switch (flags[0])
|
|
{
|
|
case 'a':
|
|
shmop->shmatflg |= SHM_RDONLY;
|
|
break;
|
|
case 'c':
|
|
shmop->shmflg |= IPC_CREAT;
|
|
shmop->size = size;
|
|
break;
|
|
case 'n':
|
|
shmop->shmflg |= (IPC_CREAT | IPC_EXCL);
|
|
shmop->size = size;
|
|
break;
|
|
case 'w':
|
|
/* noop
|
|
shm segment is being opened for read & write
|
|
will fail if segment does not exist
|
|
*/
|
|
break;
|
|
default:
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid access mode");
|
|
goto err;
|
|
}
|
|
|
|
if (shmop->shmflg & IPC_CREAT && shmop->size < 1) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Shared memory segment size must be greater than zero");
|
|
goto err;
|
|
}
|
|
|
|
shmop->shmid = shmget(shmop->key, shmop->size, shmop->shmflg);
|
|
if (shmop->shmid == -1) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to attach or create shared memory segment");
|
|
goto err;
|
|
}
|
|
|
|
if (shmctl(shmop->shmid, IPC_STAT, &shm)) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to get shared memory segment information");
|
|
goto err;
|
|
}
|
|
|
|
shmop->addr = shmat(shmop->shmid, 0, shmop->shmatflg);
|
|
if (shmop->addr == (char*) -1) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to attach to shared memory segment");
|
|
goto err;
|
|
}
|
|
|
|
shmop->size = shm.shm_segsz;
|
|
|
|
rsid = zend_list_insert(shmop, shm_type TSRMLS_CC);
|
|
RETURN_LONG(rsid);
|
|
err:
|
|
efree(shmop);
|
|
RETURN_FALSE;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto string shmop_read (int shmid, int start, int count)
|
|
reads from a shm segment */
|
|
PHP_FUNCTION(shmop_read)
|
|
{
|
|
long shmid, start, count;
|
|
struct php_shmop *shmop;
|
|
int type;
|
|
char *startaddr;
|
|
int bytes;
|
|
char *return_string;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &shmid, &start, &count) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
PHP_SHMOP_GET_RES
|
|
|
|
if (start < 0 || start > shmop->size) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "start is out of range");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
if (count < 0 || start > (INT_MAX - count) || start + count > shmop->size) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "count is out of range");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
startaddr = shmop->addr + start;
|
|
bytes = count ? count : shmop->size - start;
|
|
|
|
return_string = emalloc(bytes+1);
|
|
memcpy(return_string, startaddr, bytes);
|
|
return_string[bytes] = 0;
|
|
|
|
RETURN_STRINGL(return_string, bytes, 0);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto void shmop_close (int shmid)
|
|
closes a shared memory segment */
|
|
PHP_FUNCTION(shmop_close)
|
|
{
|
|
long shmid;
|
|
struct php_shmop *shmop;
|
|
int type;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &shmid) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
PHP_SHMOP_GET_RES
|
|
|
|
zend_list_delete(shmid);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto int shmop_size (int shmid)
|
|
returns the shm size */
|
|
PHP_FUNCTION(shmop_size)
|
|
{
|
|
long shmid;
|
|
struct php_shmop *shmop;
|
|
int type;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &shmid) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
PHP_SHMOP_GET_RES
|
|
|
|
RETURN_LONG(shmop->size);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto int shmop_write (int shmid, string data, int offset)
|
|
writes to a shared memory segment */
|
|
PHP_FUNCTION(shmop_write)
|
|
{
|
|
struct php_shmop *shmop;
|
|
int type;
|
|
int writesize;
|
|
long shmid, offset;
|
|
char *data;
|
|
int data_len;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lsl", &shmid, &data, &data_len, &offset) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
PHP_SHMOP_GET_RES
|
|
|
|
if ((shmop->shmatflg & SHM_RDONLY) == SHM_RDONLY) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "trying to write to a read only segment");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
if (offset < 0 || offset > shmop->size) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "offset out of range");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
writesize = (data_len < shmop->size - offset) ? data_len : shmop->size - offset;
|
|
memcpy(shmop->addr + offset, data, writesize);
|
|
|
|
RETURN_LONG(writesize);
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ proto bool shmop_delete (int shmid)
|
|
mark segment for deletion */
|
|
PHP_FUNCTION(shmop_delete)
|
|
{
|
|
long shmid;
|
|
struct php_shmop *shmop;
|
|
int type;
|
|
|
|
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &shmid) == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
PHP_SHMOP_GET_RES
|
|
|
|
if (shmctl(shmop->shmid, IPC_RMID, NULL)) {
|
|
php_error_docref(NULL TSRMLS_CC, E_WARNING, "can't mark segment for deletion (are you the owner?)");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
RETURN_TRUE;
|
|
}
|
|
/* }}} */
|
|
|
|
#endif /* HAVE_SHMOP */
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
* vim600: sw=4 ts=4 fdm=marker
|
|
* vim<600: sw=4 ts=4
|
|
*/
|