diff options
Diffstat (limited to 'ext/sysvshm/sysvshm.c')
| -rw-r--r-- | ext/sysvshm/sysvshm.c | 425 |
1 files changed, 0 insertions, 425 deletions
diff --git a/ext/sysvshm/sysvshm.c b/ext/sysvshm/sysvshm.c deleted file mode 100644 index eeacad9d7f..0000000000 --- a/ext/sysvshm/sysvshm.c +++ /dev/null @@ -1,425 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | PHP version 4.0 | - +----------------------------------------------------------------------+ - | Copyright (c) 1997-2001 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 2.02 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available at through the world-wide-web at | - | http://www.php.net/license/2_02.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: Christian Cartus <cartus@atrior.de> | - +----------------------------------------------------------------------+ - */ - -/* $Id$ */ - -/* This has been built and tested on Linux 2.2.14 - * - * This has been built and tested on Solaris 2.6. - * It may not compile or execute correctly on other systems. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "php.h" - -#if HAVE_SYSVSHM - -#include <errno.h> - -#include "php_sysvshm.h" -#include "ext/standard/php_var.h" -#include "ext/standard/php_smart_str.h" - -/* {{{ sysvshm_functions[] - */ -function_entry sysvshm_functions[] = { - PHP_FE(shm_attach, NULL) - PHP_FE(shm_remove, NULL) - PHP_FE(shm_detach, NULL) - PHP_FE(shm_put_var, NULL) - PHP_FE(shm_get_var, NULL) - PHP_FE(shm_remove_var, NULL) - {0} -}; -/* }}} */ - -/* {{{ sysvshm_module_entry - */ -zend_module_entry sysvshm_module_entry = { - "sysvshm", sysvshm_functions, - PHP_MINIT(sysvshm), NULL, - NULL, NULL, - NULL, - STANDARD_MODULE_PROPERTIES -}; -/* }}} */ - -#ifdef COMPILE_DL_SYSVSHM -ZEND_GET_MODULE(sysvshm) -#endif - -#undef shm_ptr /* undefine AIX-specific macro */ - -THREAD_LS sysvshm_module php_sysvshm; - -/* {{{ php_release_sysvshm - */ -static void php_release_sysvshm(zend_rsrc_list_entry *rsrc) -{ - sysvshm_shm *shm_ptr = (sysvshm_shm *)rsrc->ptr; - shmdt((void*)shm_ptr->ptr); - efree(shm_ptr); -} -/* }}} */ - -/* {{{ PHP_MINIT_FUNCTION - */ -PHP_MINIT_FUNCTION(sysvshm) -{ - php_sysvshm.le_shm = zend_register_list_destructors_ex(php_release_sysvshm, NULL, "sysvshm", module_number); - if (cfg_get_long("sysvshm.init_mem", - &php_sysvshm.init_mem)==FAILURE) { - php_sysvshm.init_mem=10000; - } - return SUCCESS; -} -/* }}} */ - -/* {{{ proto int shm_attach(int key [, int memsize [, int perm]]) - Creates or open a shared memory segment */ -PHP_FUNCTION(shm_attach) -{ - pval **arg_key,**arg_size,**arg_flag; - long shm_size,shm_flag; - sysvshm_shm *shm_list_ptr; - char *shm_ptr; - sysvshm_chunk_head *chunk_ptr; - key_t shm_key = (key_t) 0; - long shm_id,list_id; - int ac = ZEND_NUM_ARGS(); - - shm_flag = 0666; - shm_size = php_sysvshm.init_mem; - - if(ac < 1 || ac > 3 || zend_get_parameters_ex(ac, &arg_key, &arg_size, &arg_flag) == FAILURE) { - WRONG_PARAM_COUNT; - } - - switch (ac) { - case 3: - convert_to_long_ex(arg_flag); - shm_flag = (*arg_flag)->value.lval; - case 2: - convert_to_long_ex(arg_size); - shm_size= (*arg_size)->value.lval; - case 1: - convert_to_long_ex(arg_key); - shm_key = (*arg_key)->value.lval; - } - - if((shm_list_ptr = (sysvshm_shm *) emalloc(sizeof(sysvshm_shm)))==NULL) { - php_error(E_WARNING, "shm_attach() failed for key 0x%x: cannot allocate internal listelement", shm_key); - RETURN_FALSE; - } - - /* get the id from a specified key or create new shared memory */ - if((shm_id=shmget(shm_key,0,0))<0) { - if(shm_size<sizeof(sysvshm_chunk_head)) { - php_error(E_WARNING, "shm_attach() failed for key 0x%x: memorysize too small", shm_key); - RETURN_FALSE; - } - if((shm_id=shmget(shm_key,shm_size,shm_flag|IPC_CREAT|IPC_EXCL))<0) { - php_error(E_WARNING, "shmget() failed for key 0x%x: %s", shm_key, strerror(errno)); - RETURN_FALSE; - } - } - - if((shm_ptr = shmat(shm_id,NULL,0))==(void *)-1) { - php_error(E_WARNING, "shmget() failed for key 0x%x: %s", shm_key, strerror(errno)); - RETURN_FALSE; - } - - /* check if shm is already initialized */ - chunk_ptr= (sysvshm_chunk_head*) shm_ptr; - if(strcmp((char*)&(chunk_ptr->magic),"PHP_SM")!=0) { - strcpy((char*)&(chunk_ptr->magic),"PHP_SM"); - chunk_ptr->start=sizeof(sysvshm_chunk_head); - chunk_ptr->end=chunk_ptr->start; - chunk_ptr->total=shm_size; - chunk_ptr->free=shm_size-chunk_ptr->end; - } - - - shm_list_ptr->key = shm_key; - shm_list_ptr->id = shm_id; - shm_list_ptr->ptr = chunk_ptr; - list_id = zend_list_insert(shm_list_ptr, php_sysvshm.le_shm); - RETURN_LONG(list_id); -} -/* }}} */ - -/* {{{ proto int shm_detach(int shm_identifier) - Disconnects from shared memory segment */ -PHP_FUNCTION(shm_detach) -{ - pval **arg_id; - long id; - - if(ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg_id) == FAILURE) { - WRONG_PARAM_COUNT; - } - - convert_to_long_ex(arg_id); - - id = (*arg_id)->value.lval; - - zend_list_delete(id); - - RETURN_TRUE; -} -/* }}} */ - -/* {{{ proto int shm_remove(int shm_identifier) - Removes shared memory from Unix systems */ - -PHP_FUNCTION(shm_remove) -{ - pval **arg_id; - long id; - int type; - sysvshm_shm *shm_list_ptr; - - if(ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg_id) == FAILURE) { - WRONG_PARAM_COUNT; - } - - convert_to_long_ex(arg_id); - - id = (*arg_id)->value.lval; - - shm_list_ptr = (sysvshm_shm *) zend_list_find(id, &type); - if(shmctl(shm_list_ptr->id,IPC_RMID,NULL)<0) { - php_error(E_WARNING, "shm_remove() failed for key 0x%x, id %i: %s", shm_list_ptr->key, id,strerror(errno)); - RETURN_FALSE; - } - - RETURN_TRUE; -} -/* }}} */ - -/* {{{ proto int shm_put_var(int shm_identifier, int variable_key, mixed variable) - Inserts or updates a variable in shared memory */ -PHP_FUNCTION(shm_put_var) -{ - pval **arg_id, **arg_key, **arg_var; - long key, id; - sysvshm_shm *shm_list_ptr; - int type; - smart_str shm_var = {0}; - int ret; - php_serialize_data_t var_hash; - - if(ZEND_NUM_ARGS() != 3 || zend_get_parameters_ex(3, &arg_id, &arg_key,&arg_var) == FAILURE) { - WRONG_PARAM_COUNT; - } - - convert_to_long_ex(arg_id); - id = (*arg_id)->value.lval; - convert_to_long_ex(arg_key); - key = (*arg_key)->value.lval; - - shm_list_ptr = (sysvshm_shm *) zend_list_find(id, &type); - if (type!=php_sysvshm.le_shm) { - php_error(E_WARNING, "%d is not a SysV shared memory index", id); - RETURN_FALSE; - } - - /* setup string-variable and serialize */ - - PHP_VAR_SERIALIZE_INIT(var_hash); - php_var_serialize(&shm_var,arg_var,&var_hash TSRMLS_CC); - PHP_VAR_SERIALIZE_DESTROY(var_hash); - /* insert serialized variable into shared memory */ - ret=php_put_shm_data(shm_list_ptr->ptr,key,shm_var.c,shm_var.len); - - /* free string */ - smart_str_free(&shm_var); - - if(ret==-1) { - php_error(E_WARNING, "not enough shared memory left"); - RETURN_FALSE; - } - RETURN_TRUE; -} -/* }}} */ - -/* {{{ proto mixed shm_get_var(int id, int variable_key) - Returns a variable from shared memory */ -PHP_FUNCTION(shm_get_var) -{ - pval **arg_id, **arg_key; - long key, id; - sysvshm_shm *shm_list_ptr; - int type; - char *shm_data; - long shm_varpos; - sysvshm_chunk *shm_var; - php_serialize_data_t var_hash; - - if(ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &arg_id, &arg_key) == FAILURE) { - WRONG_PARAM_COUNT; - } - - convert_to_long_ex(arg_id); - id = (*arg_id)->value.lval; - convert_to_long_ex(arg_key); - key = (*arg_key)->value.lval; - - shm_list_ptr = (sysvshm_shm *) zend_list_find(id, &type); - if (type!=php_sysvshm.le_shm) { - php_error(E_WARNING, "%d is not a SysV shared memory index", id); - RETURN_FALSE; - } - - /* setup string-variable and serialize */ - /* get serialized variable from shared memory */ - shm_varpos=php_check_shm_data((shm_list_ptr->ptr),key); - - if(shm_varpos<0) { - php_error(E_WARNING, "variable key %d doesn't exist", key); - RETURN_FALSE; - } - shm_var=(sysvshm_chunk*)((char*)shm_list_ptr->ptr+shm_varpos); - shm_data=&shm_var->mem; - - PHP_VAR_UNSERIALIZE_INIT(var_hash); - if(php_var_unserialize(&return_value, (const char **) &shm_data, shm_data+shm_var->length,&var_hash TSRMLS_CC)!=1) { - PHP_VAR_UNSERIALIZE_DESTROY(var_hash); - php_error(E_WARNING, "variable data in shared memory is corruped"); - RETURN_FALSE; - } - PHP_VAR_UNSERIALIZE_DESTROY(var_hash); -} -/* }}} */ - -/* {{{ proto int shm_remove_var(int id, int variable_key) - Removes variable from shared memory */ -PHP_FUNCTION(shm_remove_var) -{ - pval **arg_id, **arg_key; - long key, id; - sysvshm_shm *shm_list_ptr; - int type; - long shm_varpos; - - if(ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &arg_id, &arg_key) == FAILURE) { - WRONG_PARAM_COUNT; - } - - convert_to_long_ex(arg_id); - id = (*arg_id)->value.lval; - convert_to_long_ex(arg_key); - key = (*arg_key)->value.lval; - - shm_list_ptr = (sysvshm_shm *) zend_list_find(id, &type); - if (type!=php_sysvshm.le_shm) { - php_error(E_WARNING, "%d is not a SysV shared memory index", id); - RETURN_FALSE; - } - - shm_varpos=php_check_shm_data((shm_list_ptr->ptr),key); - - if(shm_varpos<0) { - php_error(E_WARNING, "variable key %d doesn't exist", key); - RETURN_FALSE; - } - php_remove_shm_data((shm_list_ptr->ptr),shm_varpos); - RETURN_TRUE; -} -/* }}} */ - -/* {{{ php_put_shm_data - * inserts an ascii-string into shared memory */ -int php_put_shm_data(sysvshm_chunk_head *ptr,long key,char *data, long len) { - sysvshm_chunk* shm_var; - long total_size; - long shm_varpos; - - total_size=((long)(len+sizeof(sysvshm_chunk)-1)/4)*4+4; /* 4-byte alligment */ - - if(ptr->free<total_size) { - return -1; /* not enough memeory */ - } - - if((shm_varpos=php_check_shm_data(ptr,key))>0) { - php_remove_shm_data(ptr, shm_varpos); - } - shm_var=(sysvshm_chunk*)((char *)ptr+ptr->end); - shm_var->key=key; - shm_var->length=len; - shm_var->next=total_size; - memcpy(&(shm_var->mem),data,len); - ptr->end+=total_size; - ptr->free-=total_size; - return 0; -} -/* }}} */ - -/* {{{ php_check_shm_data - */ -long php_check_shm_data(sysvshm_chunk_head *ptr, long key) { - long pos; - sysvshm_chunk *shm_var; - - pos=ptr->start; - - for(;;) { - if(pos>=ptr->end) { - return -1; - } - shm_var=(sysvshm_chunk*)((char*)ptr+pos); - if(shm_var->key==key) { - return pos; - } - pos+=shm_var->next; - } - return -1; -} -/* }}} */ - -/* {{{ php_remove_shm_data - */ -int php_remove_shm_data(sysvshm_chunk_head *ptr, long shm_varpos) { - sysvshm_chunk *chunk_ptr, *next_chunk_ptr; - long memcpy_len; - - chunk_ptr=(sysvshm_chunk*)((char*)ptr+shm_varpos); - next_chunk_ptr=(sysvshm_chunk*)((char*)ptr+shm_varpos+chunk_ptr->next); - - memcpy_len=ptr->end-shm_varpos-chunk_ptr->next; - ptr->free+=chunk_ptr->next; - ptr->end-=chunk_ptr->next; - if(memcpy_len>0) - memcpy(chunk_ptr,next_chunk_ptr,memcpy_len); - return 0; -} -/* }}} */ - -#endif /* HAVE_SYSVSHM */ - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - * vim600: sw=4 ts=4 tw=78 fdm=marker - * vim<600: sw=4 ts=4 tw=78 - */ |