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zend_file_cache.c
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/*
+----------------------------------------------------------------------+
| Zend OPcache |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2016 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Dmitry Stogov <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_virtual_cwd.h"
#include "zend_compile.h"
#include "zend_vm.h"
#include "zend_interfaces.h"
#include "php.h"
#ifdef HAVE_OPCACHE_FILE_CACHE
#include "ZendAccelerator.h"
#include "zend_file_cache.h"
#include "zend_shared_alloc.h"
#include "zend_accelerator_util_funcs.h"
#include "zend_accelerator_hash.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#ifdef HAVE_SYS_FILE_H
# include <sys/file.h>
#endif
#ifdef ZEND_WIN32
# define LOCK_SH 0
# define LOCK_EX 1
# define LOCK_UN 2
static int zend_file_cache_flock(int fd, int op)
{
OVERLAPPED offset = {0,0,0,0,NULL};
if (op == LOCK_EX) {
if (LockFileEx((HANDLE)_get_osfhandle(fd),
LOCKFILE_EXCLUSIVE_LOCK, 0, 1, 0, &offset) == TRUE) {
return 0;
}
} else if (op == LOCK_SH) {
if (LockFileEx((HANDLE)_get_osfhandle(fd),
0, 0, 1, 0, &offset) == TRUE) {
return 0;
}
} else if (op == LOCK_UN) {
if (UnlockFileEx((HANDLE)_get_osfhandle(fd),
0, 1, 0, &offset) == TRUE) {
return 0;
}
}
return -1;
}
#elif defined(HAVE_FLOCK)
# define zend_file_cache_flock flock
#else
# define LOCK_SH 0
# define LOCK_EX 1
# define LOCK_UN 2
static int zend_file_cache_flock(int fd, int type)
{
return 0;
}
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#define SUFFIX ".bin"
#define IS_SERIALIZED_INTERNED(ptr) \
((size_t)(ptr) & Z_UL(1))
#define IS_SERIALIZED(ptr) \
((char*)(ptr) < (char*)script->size)
#define IS_UNSERIALIZED(ptr) \
(((char*)(ptr) >= (char*)script->mem && (char*)(ptr) < (char*)script->mem + script->size) || \
IS_ACCEL_INTERNED(ptr))
#define SERIALIZE_PTR(ptr) do { \
if (ptr) { \
ZEND_ASSERT(IS_UNSERIALIZED(ptr)); \
(ptr) = (void*)((char*)(ptr) - (char*)script->mem); \
} \
} while (0)
#define UNSERIALIZE_PTR(ptr) do { \
if (ptr) { \
ZEND_ASSERT(IS_SERIALIZED(ptr)); \
(ptr) = (void*)((char*)buf + (size_t)(ptr)); \
} \
} while (0)
#define SERIALIZE_STR(ptr) do { \
if (ptr) { \
if (IS_ACCEL_INTERNED(ptr)) { \
(ptr) = zend_file_cache_serialize_interned((zend_string*)(ptr), info); \
} else { \
ZEND_ASSERT(IS_UNSERIALIZED(ptr)); \
/* script->corrupted shows if the script in SHM or not */ \
if (EXPECTED(script->corrupted)) { \
GC_FLAGS(ptr) |= IS_STR_INTERNED; \
GC_FLAGS(ptr) &= ~IS_STR_PERMANENT; \
} \
(ptr) = (void*)((char*)(ptr) - (char*)script->mem); \
} \
} \
} while (0)
#define UNSERIALIZE_STR(ptr) do { \
if (ptr) { \
if (IS_SERIALIZED_INTERNED(ptr)) { \
(ptr) = (void*)zend_file_cache_unserialize_interned((zend_string*)(ptr), !script->corrupted); \
} else { \
ZEND_ASSERT(IS_SERIALIZED(ptr)); \
(ptr) = (void*)((char*)buf + (size_t)(ptr)); \
/* script->corrupted shows if the script in SHM or not */ \
if (EXPECTED(!script->corrupted)) { \
GC_FLAGS(ptr) |= IS_STR_INTERNED | IS_STR_PERMANENT; \
} else { \
GC_FLAGS(ptr) |= IS_STR_INTERNED; \
GC_FLAGS(ptr) &= ~IS_STR_PERMANENT; \
} \
} \
} \
} while (0)
static const uint32_t uninitialized_bucket[-HT_MIN_MASK] =
{HT_INVALID_IDX, HT_INVALID_IDX};
typedef struct _zend_file_cache_metainfo {
char magic[8];
char system_id[32];
size_t mem_size;
size_t str_size;
size_t script_offset;
accel_time_t timestamp;
uint32_t checksum;
} zend_file_cache_metainfo;
static int zend_file_cache_mkdir(char *filename, size_t start)
{
char *s = filename + start;
while (*s) {
if (IS_SLASH(*s)) {
char old = *s;
*s = '\000';
if (mkdir(filename, S_IRWXU) < 0 && errno != EEXIST) {
*s = old;
return FAILURE;
}
*s = old;
}
s++;
}
return SUCCESS;
}
typedef void (*serialize_callback_t)(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf);
typedef void (*unserialize_callback_t)(zval *zv,
zend_persistent_script *script,
void *buf);
static void zend_file_cache_serialize_zval(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf);
static void zend_file_cache_unserialize_zval(zval *zv,
zend_persistent_script *script,
void *buf);
static void *zend_file_cache_serialize_interned(zend_string *str,
zend_file_cache_metainfo *info)
{
size_t len;
void *ret;
/* check if the same interned string was already stored */
ret = zend_shared_alloc_get_xlat_entry(str);
if (ret) {
return ret;
}
len = ZEND_MM_ALIGNED_SIZE(_ZSTR_STRUCT_SIZE(ZSTR_LEN(str)));
ret = (void*)(info->str_size | Z_UL(1));
zend_shared_alloc_register_xlat_entry(str, ret);
if (info->str_size + len > ZSTR_LEN((zend_string*)ZCG(mem))) {
size_t new_len = info->str_size + len;
ZCG(mem) = (void*)zend_string_realloc(
(zend_string*)ZCG(mem),
((_ZSTR_HEADER_SIZE + 1 + new_len + 4095) & ~0xfff) - (_ZSTR_HEADER_SIZE + 1),
0);
}
memcpy(ZSTR_VAL((zend_string*)ZCG(mem)) + info->str_size, str, len);
info->str_size += len;
return ret;
}
static void *zend_file_cache_unserialize_interned(zend_string *str, int in_shm)
{
zend_string *ret;
str = (zend_string*)((char*)ZCG(mem) + ((size_t)(str) & ~Z_UL(1)));
if (in_shm) {
ret = accel_new_interned_string(str);
if (ret == str) {
/* String wasn't interned but we will use it as interned anyway */
GC_FLAGS(ret) |= IS_STR_INTERNED | IS_STR_PERMANENT;
}
} else {
ret = str;
GC_FLAGS(ret) |= IS_STR_INTERNED;
GC_FLAGS(ret) &= ~IS_STR_PERMANENT;
}
return ret;
}
static void zend_file_cache_serialize_hash(HashTable *ht,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf,
serialize_callback_t func)
{
Bucket *p, *end;
if (!(ht->u.flags & HASH_FLAG_INITIALIZED)) {
ht->arData = NULL;
return;
}
if (IS_SERIALIZED(ht->arData)) {
return;
}
SERIALIZE_PTR(ht->arData);
p = ht->arData;
UNSERIALIZE_PTR(p);
end = p + ht->nNumUsed;
while (p < end) {
if (Z_TYPE(p->val) != IS_UNDEF) {
SERIALIZE_STR(p->key);
func(&p->val, script, info, buf);
}
p++;
}
}
static zend_ast *zend_file_cache_serialize_ast(zend_ast *ast,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
uint32_t i;
zend_ast *ret;
SERIALIZE_PTR(ast);
ret = ast;
UNSERIALIZE_PTR(ast);
if (ast->kind == ZEND_AST_ZVAL) {
zend_file_cache_serialize_zval(&((zend_ast_zval*)ast)->val, script, info, buf);
} else if (zend_ast_is_list(ast)) {
zend_ast_list *list = zend_ast_get_list(ast);
for (i = 0; i < list->children; i++) {
if (list->child[i]) {
list->child[i] = zend_file_cache_serialize_ast(list->child[i], script, info, buf);
}
}
} else {
uint32_t children = zend_ast_get_num_children(ast);
for (i = 0; i < children; i++) {
if (ast->child[i]) {
ast->child[i] = zend_file_cache_serialize_ast(ast->child[i], script, info, buf);
}
}
}
return ret;
}
static void zend_file_cache_serialize_zval(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
switch (Z_TYPE_P(zv)) {
case IS_STRING:
case IS_CONSTANT:
if (!IS_SERIALIZED(Z_STR_P(zv))) {
SERIALIZE_STR(Z_STR_P(zv));
}
break;
case IS_ARRAY:
if (!IS_SERIALIZED(Z_ARR_P(zv))) {
HashTable *ht;
SERIALIZE_PTR(Z_ARR_P(zv));
ht = Z_ARR_P(zv);
UNSERIALIZE_PTR(ht);
zend_file_cache_serialize_hash(ht, script, info, buf, zend_file_cache_serialize_zval);
}
break;
case IS_REFERENCE:
if (!IS_SERIALIZED(Z_REF_P(zv))) {
zend_reference *ref;
SERIALIZE_PTR(Z_REF_P(zv));
ref = Z_REF_P(zv);
UNSERIALIZE_PTR(ref);
zend_file_cache_serialize_zval(&ref->val, script, info, buf);
}
break;
case IS_CONSTANT_AST:
if (!IS_SERIALIZED(Z_AST_P(zv))) {
zend_ast_ref *ast;
SERIALIZE_PTR(Z_AST_P(zv));
ast = Z_AST_P(zv);
UNSERIALIZE_PTR(ast);
if (!IS_SERIALIZED(ast->ast)) {
ast->ast = zend_file_cache_serialize_ast(ast->ast, script, info, buf);
}
}
break;
}
}
static void zend_file_cache_serialize_op_array(zend_op_array *op_array,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
if (op_array->static_variables && !IS_SERIALIZED(op_array->static_variables)) {
HashTable *ht;
SERIALIZE_PTR(op_array->static_variables);
ht = op_array->static_variables;
UNSERIALIZE_PTR(ht);
zend_file_cache_serialize_hash(ht, script, info, buf, zend_file_cache_serialize_zval);
}
if (op_array->literals && !IS_SERIALIZED(op_array->literals)) {
zval *p, *end;
SERIALIZE_PTR(op_array->literals);
p = op_array->literals;
UNSERIALIZE_PTR(p);
end = p + op_array->last_literal;
while (p < end) {
zend_file_cache_serialize_zval(p, script, info, buf);
p++;
}
}
if (!IS_SERIALIZED(op_array->opcodes)) {
zend_op *opline, *end;
SERIALIZE_PTR(op_array->opcodes);
opline = op_array->opcodes;
UNSERIALIZE_PTR(opline);
end = opline + op_array->last;
while (opline < end) {
#if ZEND_USE_ABS_CONST_ADDR
if (opline->op1_type == IS_CONST) {
SERIALIZE_PTR(opline->op1.zv);
}
if (opline->op2_type == IS_CONST) {
SERIALIZE_PTR(opline->op2.zv);
}
#endif
#if ZEND_USE_ABS_JMP_ADDR
switch (opline->opcode) {
case ZEND_JMP:
case ZEND_FAST_CALL:
SERIALIZE_PTR(opline->op1.jmp_addr);
break;
case ZEND_JMPZNZ:
/* relative extended_value don't have to be changed */
/* break omitted intentionally */
case ZEND_JMPZ:
case ZEND_JMPNZ:
case ZEND_JMPZ_EX:
case ZEND_JMPNZ_EX:
case ZEND_JMP_SET:
case ZEND_COALESCE:
case ZEND_FE_RESET_R:
case ZEND_FE_RESET_RW:
case ZEND_ASSERT_CHECK:
SERIALIZE_PTR(opline->op2.jmp_addr);
break;
case ZEND_DECLARE_ANON_CLASS:
case ZEND_DECLARE_ANON_INHERITED_CLASS:
case ZEND_FE_FETCH_R:
case ZEND_FE_FETCH_RW:
/* relative extended_value don't have to be changed */
break;
}
#endif
zend_serialize_opcode_handler(opline);
opline++;
}
if (op_array->arg_info) {
zend_arg_info *p, *end;
SERIALIZE_PTR(op_array->arg_info);
p = op_array->arg_info;
UNSERIALIZE_PTR(p);
end = p + op_array->num_args;
if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
p--;
}
if (op_array->fn_flags & ZEND_ACC_VARIADIC) {
end++;
}
while (p < end) {
if (!IS_SERIALIZED(p->name)) {
SERIALIZE_STR(p->name);
}
if (!IS_SERIALIZED(p->class_name)) {
SERIALIZE_STR(p->class_name);
}
p++;
}
}
if (op_array->vars) {
zend_string **p, **end;
SERIALIZE_PTR(op_array->vars);
p = op_array->vars;
UNSERIALIZE_PTR(p);
end = p + op_array->last_var;
while (p < end) {
if (!IS_SERIALIZED(*p)) {
SERIALIZE_STR(*p);
}
p++;
}
}
SERIALIZE_STR(op_array->function_name);
SERIALIZE_STR(op_array->filename);
SERIALIZE_PTR(op_array->live_range);
SERIALIZE_PTR(op_array->scope);
SERIALIZE_STR(op_array->doc_comment);
SERIALIZE_PTR(op_array->try_catch_array);
SERIALIZE_PTR(op_array->prototype);
}
}
static void zend_file_cache_serialize_func(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
zend_op_array *op_array;
SERIALIZE_PTR(Z_PTR_P(zv));
op_array = Z_PTR_P(zv);
UNSERIALIZE_PTR(op_array);
zend_file_cache_serialize_op_array(op_array, script, info, buf);
}
static void zend_file_cache_serialize_prop_info(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
if (!IS_SERIALIZED(Z_PTR_P(zv))) {
zend_property_info *prop;
SERIALIZE_PTR(Z_PTR_P(zv));
prop = Z_PTR_P(zv);
UNSERIALIZE_PTR(prop);
if (prop->ce && !IS_SERIALIZED(prop->ce)) {
SERIALIZE_PTR(prop->ce);
}
if (prop->name && !IS_SERIALIZED(prop->name)) {
SERIALIZE_STR(prop->name);
}
if (prop->doc_comment && !IS_SERIALIZED(prop->doc_comment)) {
SERIALIZE_STR(prop->doc_comment);
}
}
}
static void zend_file_cache_serialize_class_constant(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
if (!IS_SERIALIZED(Z_PTR_P(zv))) {
zend_class_constant *c;
SERIALIZE_PTR(Z_PTR_P(zv));
c = Z_PTR_P(zv);
UNSERIALIZE_PTR(c);
zend_file_cache_serialize_zval(&c->value, script, info, buf);
if (c->ce && !IS_SERIALIZED(c->ce)) {
SERIALIZE_PTR(c->ce);
}
if (c->doc_comment && !IS_SERIALIZED(c->doc_comment)) {
SERIALIZE_STR(c->doc_comment);
}
}
}
static void zend_file_cache_serialize_class(zval *zv,
zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
zend_class_entry *ce;
SERIALIZE_PTR(Z_PTR_P(zv));
ce = Z_PTR_P(zv);
UNSERIALIZE_PTR(ce);
SERIALIZE_STR(ce->name);
zend_file_cache_serialize_hash(&ce->function_table, script, info, buf, zend_file_cache_serialize_func);
if (ce->default_properties_table) {
zval *p, *end;
SERIALIZE_PTR(ce->default_properties_table);
p = ce->default_properties_table;
UNSERIALIZE_PTR(p);
end = p + ce->default_properties_count;
while (p < end) {
zend_file_cache_serialize_zval(p, script, info, buf);
p++;
}
}
if (ce->default_static_members_table) {
zval *p, *end;
SERIALIZE_PTR(ce->default_static_members_table);
p = ce->default_static_members_table;
UNSERIALIZE_PTR(p);
end = p + ce->default_static_members_count;
while (p < end) {
zend_file_cache_serialize_zval(p, script, info, buf);
p++;
}
}
zend_file_cache_serialize_hash(&ce->constants_table, script, info, buf, zend_file_cache_serialize_class_constant);
SERIALIZE_STR(ce->info.user.filename);
SERIALIZE_STR(ce->info.user.doc_comment);
zend_file_cache_serialize_hash(&ce->properties_info, script, info, buf, zend_file_cache_serialize_prop_info);
if (ce->trait_aliases) {
zend_trait_alias **p, *q;
SERIALIZE_PTR(ce->trait_aliases);
p = ce->trait_aliases;
UNSERIALIZE_PTR(p);
while (*p) {
SERIALIZE_PTR(*p);
q = *p;
UNSERIALIZE_PTR(q);
if (q->trait_method) {
zend_trait_method_reference *m;
SERIALIZE_PTR(q->trait_method);
m = q->trait_method;
UNSERIALIZE_PTR(m);
if (m->method_name) {
SERIALIZE_STR(m->method_name);
}
if (m->class_name) {
SERIALIZE_STR(m->class_name);
}
}
if (q->alias) {
SERIALIZE_STR(q->alias);
}
p++;
}
}
if (ce->trait_precedences) {
zend_trait_precedence **p, *q;
SERIALIZE_PTR(ce->trait_precedences);
p = ce->trait_precedences;
UNSERIALIZE_PTR(p);
while (*p) {
SERIALIZE_PTR(*p);
q = *p;
UNSERIALIZE_PTR(q);
if (q->trait_method) {
zend_trait_method_reference *m;
SERIALIZE_PTR(q->trait_method);
m = q->trait_method;
UNSERIALIZE_PTR(m);
if (m->method_name) {
SERIALIZE_STR(m->method_name);
}
if (m->class_name) {
SERIALIZE_STR(m->class_name);
}
}
if (q->exclude_from_classes) {
zend_string **s;
SERIALIZE_PTR(q->exclude_from_classes);
s = (zend_string**)q->exclude_from_classes;
UNSERIALIZE_PTR(s);
while (*s) {
SERIALIZE_STR(*s);
s++;
}
}
p++;
}
}
SERIALIZE_PTR(ce->parent);
SERIALIZE_PTR(ce->constructor);
SERIALIZE_PTR(ce->destructor);
SERIALIZE_PTR(ce->clone);
SERIALIZE_PTR(ce->__get);
SERIALIZE_PTR(ce->__set);
SERIALIZE_PTR(ce->__call);
SERIALIZE_PTR(ce->serialize_func);
SERIALIZE_PTR(ce->unserialize_func);
SERIALIZE_PTR(ce->__isset);
SERIALIZE_PTR(ce->__unset);
SERIALIZE_PTR(ce->__tostring);
SERIALIZE_PTR(ce->__callstatic);
SERIALIZE_PTR(ce->__debugInfo);
}
static void zend_file_cache_serialize(zend_persistent_script *script,
zend_file_cache_metainfo *info,
void *buf)
{
zend_persistent_script *new_script;
memcpy(info->magic, "OPCACHE", 8);
memcpy(info->system_id, ZCG(system_id), 32);
info->mem_size = script->size;
info->str_size = 0;
info->script_offset = (char*)script - (char*)script->mem;
info->timestamp = script->timestamp;
memcpy(buf, script->mem, script->size);
new_script = (zend_persistent_script*)((char*)buf + info->script_offset);
SERIALIZE_STR(new_script->script.filename);
zend_file_cache_serialize_hash(&new_script->script.class_table, script, info, buf, zend_file_cache_serialize_class);
zend_file_cache_serialize_hash(&new_script->script.function_table, script, info, buf, zend_file_cache_serialize_func);
zend_file_cache_serialize_op_array(&new_script->script.main_op_array, script, info, buf);
SERIALIZE_PTR(new_script->arena_mem);
new_script->mem = NULL;
}
static char *zend_file_cache_get_bin_file_path(zend_string *script_path)
{
size_t len;
char *filename;
len = strlen(ZCG(accel_directives).file_cache);
filename = emalloc(len + 33 + ZSTR_LEN(script_path) + sizeof(SUFFIX));
memcpy(filename, ZCG(accel_directives).file_cache, len);
#ifndef ZEND_WIN32
filename[len] = '/';
memcpy(filename + len + 1, ZCG(system_id), 32);
memcpy(filename + len + 33, ZSTR_VAL(script_path), ZSTR_LEN(script_path));
memcpy(filename + len + 33 + ZSTR_LEN(script_path), SUFFIX, sizeof(SUFFIX));
#else
filename[len] = '\\';
memcpy(filename + len + 1, ZCG(system_id), 32);
if (ZSTR_LEN(script_path) >= 2 && ':' == ZSTR_VAL(script_path)[1]) {
/* local fs */
*(filename + len + 33) = '\\';
*(filename + len + 34) = ZSTR_VAL(script_path)[0];
memcpy(filename + len + 35, ZSTR_VAL(script_path) + 2, ZSTR_LEN(script_path) - 2);
memcpy(filename + len + 35 + ZSTR_LEN(script_path) - 2, SUFFIX, sizeof(SUFFIX));
} else {
/* network path */
memcpy(filename + len + 33, ZSTR_VAL(script_path), ZSTR_LEN(script_path));
memcpy(filename + len + 33 + ZSTR_LEN(script_path), SUFFIX, sizeof(SUFFIX));
}
#endif
return filename;
}
int zend_file_cache_script_store(zend_persistent_script *script, int in_shm)
{
int fd;
char *filename;
zend_file_cache_metainfo info;
#ifdef HAVE_SYS_UIO_H
struct iovec vec[3];
#endif
void *mem, *buf;
filename = zend_file_cache_get_bin_file_path(script->script.filename);
if (zend_file_cache_mkdir(filename, strlen(ZCG(accel_directives).file_cache)) != SUCCESS) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot create directory for file '%s'\n", filename);
efree(filename);
return FAILURE;
}
#ifndef ZEND_WIN32
fd = open(filename, O_CREAT | O_EXCL | O_RDWR | O_BINARY, S_IRUSR | S_IWUSR);
#else
fd = open(filename, O_CREAT | O_EXCL | O_RDWR | O_BINARY, _S_IREAD | _S_IWRITE);
#endif
if (fd < 0) {
if (errno != EEXIST) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot create file '%s'\n", filename);
}
efree(filename);
return FAILURE;
}
if (zend_file_cache_flock(fd, LOCK_EX) != 0) {
close(fd);
efree(filename);
return FAILURE;
}
#ifdef __SSE2__
/* Align to 64-byte boundary */
mem = emalloc(script->size + 64);
buf = (void*)(((zend_uintptr_t)mem + 63L) & ~63L);
#else
mem = buf = emalloc(script->size);
#endif
ZCG(mem) = zend_string_alloc(4096 - (_ZSTR_HEADER_SIZE + 1), 0);
zend_shared_alloc_init_xlat_table();
if (!in_shm) {
script->corrupted = 1; /* used to check if script restored to SHM or process memory */
}
zend_file_cache_serialize(script, &info, buf);
if (!in_shm) {
script->corrupted = 0;
}
zend_shared_alloc_destroy_xlat_table();
info.checksum = zend_adler32(ADLER32_INIT, buf, script->size);
info.checksum = zend_adler32(info.checksum, (signed char*)ZSTR_VAL((zend_string*)ZCG(mem)), info.str_size);
#ifdef HAVE_SYS_UIO_H
vec[0].iov_base = &info;
vec[0].iov_len = sizeof(info);
vec[1].iov_base = buf;
vec[1].iov_len = script->size;
vec[2].iov_base = ZSTR_VAL((zend_string*)ZCG(mem));
vec[2].iov_len = info.str_size;
if (writev(fd, vec, 3) != (ssize_t)(sizeof(info) + script->size + info.str_size)) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot write to file '%s'\n", filename);
zend_string_release((zend_string*)ZCG(mem));
close(fd);
efree(mem);
unlink(filename);
efree(filename);
return FAILURE;
}
#else
if (ZEND_LONG_MAX < (zend_long)(sizeof(info) + script->size + info.str_size) ||
write(fd, &info, sizeof(info)) != sizeof(info) ||
write(fd, buf, script->size) != script->size ||
write(fd, ((zend_string*)ZCG(mem))->val, info.str_size) != info.str_size
) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot write to file '%s'\n", filename);
zend_string_release((zend_string*)ZCG(mem));
close(fd);
efree(mem);
unlink(filename);
efree(filename);
return FAILURE;
}
#endif
zend_string_release((zend_string*)ZCG(mem));
efree(mem);
if (zend_file_cache_flock(fd, LOCK_UN) != 0) {
zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot unlock file '%s'\n", filename);
}
close(fd);
efree(filename);
return SUCCESS;
}
static void zend_file_cache_unserialize_hash(HashTable *ht,
zend_persistent_script *script,
void *buf,
unserialize_callback_t func,
dtor_func_t dtor)
{
Bucket *p, *end;
ht->pDestructor = dtor;
if (!(ht->u.flags & HASH_FLAG_INITIALIZED)) {
HT_SET_DATA_ADDR(ht, &uninitialized_bucket);
return;
}
if (IS_UNSERIALIZED(ht->arData)) {
return;
}
UNSERIALIZE_PTR(ht->arData);
p = ht->arData;
end = p + ht->nNumUsed;
while (p < end) {
if (Z_TYPE(p->val) != IS_UNDEF) {
UNSERIALIZE_STR(p->key);
func(&p->val, script, buf);
}
p++;
}
}
static zend_ast *zend_file_cache_unserialize_ast(zend_ast *ast,
zend_persistent_script *script,
void *buf)
{
uint32_t i;
UNSERIALIZE_PTR(ast);
if (ast->kind == ZEND_AST_ZVAL) {
zend_file_cache_unserialize_zval(&((zend_ast_zval*)ast)->val, script, buf);
} else if (zend_ast_is_list(ast)) {
zend_ast_list *list = zend_ast_get_list(ast);
for (i = 0; i < list->children; i++) {
if (list->child[i]) {
list->child[i] = zend_file_cache_unserialize_ast(list->child[i], script, buf);
}
}
} else {
uint32_t children = zend_ast_get_num_children(ast);
for (i = 0; i < children; i++) {
if (ast->child[i]) {
ast->child[i] = zend_file_cache_unserialize_ast(ast->child[i], script, buf);
}
}
}
return ast;
}
static void zend_file_cache_unserialize_zval(zval *zv,
zend_persistent_script *script,
void *buf)
{
switch (Z_TYPE_P(zv)) {
case IS_STRING:
case IS_CONSTANT:
if (!IS_UNSERIALIZED(Z_STR_P(zv))) {
UNSERIALIZE_STR(Z_STR_P(zv));
}
break;
case IS_ARRAY:
if (!IS_UNSERIALIZED(Z_ARR_P(zv))) {
HashTable *ht;
UNSERIALIZE_PTR(Z_ARR_P(zv));
ht = Z_ARR_P(zv);
zend_file_cache_unserialize_hash(ht,
script, buf, zend_file_cache_unserialize_zval, ZVAL_PTR_DTOR);
}
break;
case IS_REFERENCE:
if (!IS_UNSERIALIZED(Z_REF_P(zv))) {
zend_reference *ref;
UNSERIALIZE_PTR(Z_REF_P(zv));
ref = Z_REF_P(zv);
zend_file_cache_unserialize_zval(&ref->val, script, buf);
}
break;
case IS_CONSTANT_AST:
if (!IS_UNSERIALIZED(Z_AST_P(zv))) {
zend_ast_ref *ast;
UNSERIALIZE_PTR(Z_AST_P(zv));
ast = Z_AST_P(zv);
if (!IS_UNSERIALIZED(ast->ast)) {
ast->ast = zend_file_cache_unserialize_ast(ast->ast, script, buf);
}
}
break;
}
}
static void zend_file_cache_unserialize_op_array(zend_op_array *op_array,
zend_persistent_script *script,
void *buf)
{
if (op_array->static_variables && !IS_UNSERIALIZED(op_array->static_variables)) {
HashTable *ht;
UNSERIALIZE_PTR(op_array->static_variables);
ht = op_array->static_variables;
zend_file_cache_unserialize_hash(ht,
script, buf, zend_file_cache_unserialize_zval, ZVAL_PTR_DTOR);
}
if (op_array->literals && !IS_UNSERIALIZED(op_array->literals)) {
zval *p, *end;
UNSERIALIZE_PTR(op_array->literals);
p = op_array->literals;
end = p + op_array->last_literal;
while (p < end) {
zend_file_cache_unserialize_zval(p, script, buf);
p++;
}
}
if (!IS_UNSERIALIZED(op_array->opcodes)) {
zend_op *opline, *end;
UNSERIALIZE_PTR(op_array->opcodes);
opline = op_array->opcodes;
end = opline + op_array->last;
while (opline < end) {
# if ZEND_USE_ABS_CONST_ADDR
if (opline->op1_type == IS_CONST) {
UNSERIALIZE_PTR(opline->op1.zv);
}
if (opline->op2_type == IS_CONST) {
UNSERIALIZE_PTR(opline->op2.zv);
}
# endif
# if ZEND_USE_ABS_JMP_ADDR
switch (opline->opcode) {
case ZEND_JMP:
case ZEND_FAST_CALL:
UNSERIALIZE_PTR(opline->op1.jmp_addr);
break;
case ZEND_JMPZNZ:
/* relative extended_value don't have to be changed */
/* break omitted intentionally */
case ZEND_JMPZ:
case ZEND_JMPNZ:
case ZEND_JMPZ_EX:
case ZEND_JMPNZ_EX:
case ZEND_JMP_SET:
case ZEND_COALESCE:
case ZEND_FE_RESET_R:
case ZEND_FE_RESET_RW:
case ZEND_ASSERT_CHECK:
UNSERIALIZE_PTR(opline->op2.jmp_addr);
break;
case ZEND_DECLARE_ANON_CLASS:
case ZEND_DECLARE_ANON_INHERITED_CLASS:
case ZEND_FE_FETCH_R:
case ZEND_FE_FETCH_RW:
/* relative extended_value don't have to be changed */
break;
}
# endif
zend_deserialize_opcode_handler(opline);
opline++;
}
if (op_array->arg_info) {
zend_arg_info *p, *end;