Allow loading FFI bindings through ffi.preload directive

Zend/zend_compile.h

@@ -1094,6 +1094,9 @@ END_EXTERN_C()
 /* disable jumptable optimization for switch statements */
 #define ZEND_COMPILE_NO_JUMPTABLES				(1<<16)
 
+/* this flag is set when compiler invoked during preloading in separate process */
+#define ZEND_COMPILE_PRELOAD_IN_CHILD           (1<<17)
+
 /* The default value for CG(compiler_options) */
 #define ZEND_COMPILE_DEFAULT					ZEND_COMPILE_HANDLE_OP_ARRAY
 

ext/ffi/ffi.c

@@ -3083,15 +3083,13 @@ static zend_ffi_type *zend_ffi_remember_type(zend_ffi_type *type) /* {{{ */
 }
 /* }}} */
 
-ZEND_METHOD(FFI, load) /* {{{ */
+static zend_ffi *zend_ffi_load(const char *filename, zend_bool preload) /* {{{ */
 {
-	zend_string *fn;
 	struct stat buf;
 	int fd;
-	char *filename, *code, *code_pos, *scope_name, *lib;
+	char *code, *code_pos, *scope_name, *lib;
 	size_t code_size, scope_name_len;
 	zend_ffi *ffi;
-	zend_bool preload = (CG(compiler_options) & ZEND_COMPILE_PRELOAD) != 0;
 	DL_HANDLE handle = NULL;
 	zend_ffi_scope *scope = NULL;
 	zend_string *name;
@@ -3099,19 +3097,13 @@ ZEND_METHOD(FFI, load) /* {{{ */
 	zend_ffi_tag *tag;
 	void *addr;
 
-	ZEND_FFI_VALIDATE_API_RESTRICTION();
-	ZEND_PARSE_PARAMETERS_START(1, 1)
-		Z_PARAM_STR(fn)
-	ZEND_PARSE_PARAMETERS_END();
-
-	filename = ZSTR_VAL(fn);
 	if (stat(filename, &buf) != 0) {
 		if (preload) {
 			zend_error(E_WARNING, "FFI: failed pre-loading '%s', file doesn't exist", filename);
 		} else {
 			zend_throw_error(zend_ffi_exception_ce, "Failed loading '%s', file doesn't exist", filename);
 		}
-		return;
+		return NULL;
 	}
 
 	if ((buf.st_mode & S_IFMT) != S_IFREG) {
@@ -3120,7 +3112,7 @@ ZEND_METHOD(FFI, load) /* {{{ */
 		} else {
 			zend_throw_error(zend_ffi_exception_ce, "Failed loading '%s', not a regular file", filename);
 		}
-		return;
+		return NULL;
 	}
 
 	code_size = buf.st_size;
@@ -3134,7 +3126,7 @@ ZEND_METHOD(FFI, load) /* {{{ */
 		}
 		efree(code);
 		close(fd);
-		return;
+		return NULL;
 	}
 	close(fd);
 	code[code_size] = 0;
@@ -3153,7 +3145,7 @@ ZEND_METHOD(FFI, load) /* {{{ */
 	if (!code_pos) {
 		efree(code);
 		FFI_G(persistent) = 0;
-		return;
+		return NULL;
 	}
 	code_size -= code_pos - code;
 
@@ -3318,7 +3310,11 @@ ZEND_METHOD(FFI, load) /* {{{ */
 			}
 		}
 
-		ffi = (zend_ffi*)zend_ffi_new(zend_ffi_ce);
+		if (EG(objects_store).object_buckets) {
+			ffi = (zend_ffi*)zend_ffi_new(zend_ffi_ce);
+		} else {
+			ffi = ecalloc(1, sizeof(zend_ffi));
+		}
 		ffi->symbols = scope->symbols;
 		ffi->tags = scope->tags;
 		ffi->persistent = 1;
@@ -3333,7 +3329,7 @@ ZEND_METHOD(FFI, load) /* {{{ */
 	FFI_G(symbols) = NULL;
 	FFI_G(tags) = NULL;
 
-	RETURN_OBJ(&ffi->std);
+	return ffi;
 
 cleanup:
 	efree(code);
@@ -3348,6 +3344,30 @@ cleanup:
 		FFI_G(tags) = NULL;
 	}
 	FFI_G(persistent) = 0;
+	return NULL;
+}
+/* }}} */
+
+ZEND_METHOD(FFI, load) /* {{{ */
+{
+	zend_string *fn;
+	zend_ffi *ffi;
+
+	ZEND_FFI_VALIDATE_API_RESTRICTION();
+	ZEND_PARSE_PARAMETERS_START(1, 1)
+		Z_PARAM_STR(fn)
+	ZEND_PARSE_PARAMETERS_END();
+
+	if (CG(compiler_options) & ZEND_COMPILE_PRELOAD_IN_CHILD) {
+		zend_throw_error(zend_ffi_exception_ce, "FFI::load() doesn't work in conjunction with \"opcache.pelaod_user\". Use \"ffi.preload\" instead.");
+		return;
+	}
+
+	ffi = zend_ffi_load(ZSTR_VAL(fn), (CG(compiler_options) & ZEND_COMPILE_PRELOAD) != 0);
+
+	if (ffi) {
+		RETURN_OBJ(&ffi->std);
+	}
 }
 /* }}} */
 
@@ -4813,8 +4833,51 @@ static ZEND_INI_DISP(zend_ffi_enable_displayer_cb) /* {{{ */
 
 ZEND_INI_BEGIN()
 	ZEND_INI_ENTRY3_EX("ffi.enable", "preload", ZEND_INI_SYSTEM, OnUpdateFFIEnable, NULL, NULL, NULL, zend_ffi_enable_displayer_cb)
+	STD_ZEND_INI_ENTRY("ffi.preload", NULL, ZEND_INI_SYSTEM, OnUpdateString, preload, zend_ffi_globals, ffi_globals)
 ZEND_INI_END()
 
+static int zend_ffi_preload(char *preload) /* {{{ */
+{
+	zend_ffi *ffi;
+	char *s = NULL, *e, *filename;
+
+	e = preload;
+	while (*e) {
+		switch (*e) {
+			case ZEND_PATHS_SEPARATOR:
+				if (s) {
+					filename = estrndup(s, e-s);
+					ffi = zend_ffi_load(filename, 1);
+					efree(filename);
+					if (!ffi) {
+						return FAILURE;
+					}
+					efree(ffi);
+					s = NULL;
+				}
+				break;
+			default:
+				if (!s) {
+					s = e;
+				}
+				break;
+		}
+		e++;
+	}
+	if (s) {
+		filename = estrndup(s, e-s);
+		ffi = zend_ffi_load(filename, 1);
+		efree(filename);
+		if (!ffi) {
+			return FAILURE;
+		}
+		efree(ffi);
+	}
+
+	return SUCCESS;
+}
+/* }}} */
+
 /* {{{ ZEND_MINIT_FUNCTION
  */
 ZEND_MINIT_FUNCTION(ffi)
@@ -4976,6 +5039,12 @@ ZEND_MINIT_FUNCTION(ffi)
 	zend_ffi_ctype_handlers.get_properties       = zend_fake_get_properties;
 	zend_ffi_ctype_handlers.get_gc               = zend_fake_get_gc;
 
+	if (FFI_G(preload)) {
+		if (zend_ffi_preload(FFI_G(preload)) != SUCCESS) {
+			return FAILURE;
+		}
+	}
+
 	return SUCCESS;
 }
 /* }}} */

ext/ffi/php_ffi.h

@@ -38,6 +38,7 @@ ZEND_BEGIN_MODULE_GLOBALS(ffi)
 	HashTable types;
 
 	/* preloading */
+	char *preload;
 	HashTable *scopes;           /* list of preloaded scopes */
 
 	/* callbacks */

ext/ffi/tests/302.phpt

@@ -0,0 +1,15 @@
+--TEST--
+FFI 302: FFI preloading
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+<?php if (substr(PHP_OS, 0, 3) == 'WIN') die('skip not for Windows'); ?>
+--INI--
+ffi.enable=1
+ffi.preload={PWD}/300.h
+--FILE--
+<?php
+$ffi = FFI::scope("TEST_300");
+$ffi->printf("Hello World from %s!\n", "PHP");
+?>
+--EXPECT--
+Hello World from PHP!

ext/opcache/ZendAccelerator.c

@@ -4140,14 +4140,17 @@ static void preload_load(void)
 	if (EG(class_table)) {
 		EG(persistent_classes_count)   = EG(class_table)->nNumUsed;
 	}
-	CG(map_ptr_last) = ZCSG(map_ptr_last);
+	if (CG(map_ptr_last) != ZCSG(map_ptr_last)) {
+		CG(map_ptr_last) = ZCSG(map_ptr_last);
+		CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(CG(map_ptr_last) + 1, 4096);
+		CG(map_ptr_base) = perealloc(CG(map_ptr_base), CG(map_ptr_size) * sizeof(void*), 1);
+	}
 }
 
 static int accel_preload(const char *config)
 {
 	zend_file_handle file_handle;
 	int ret;
-	uint32_t orig_compiler_options;
 	char *orig_open_basedir;
 	size_t orig_map_ptr_last;
 	zval *zv;
@@ -4159,14 +4162,6 @@ static int accel_preload(const char *config)
 	preload_orig_compile_file = accelerator_orig_compile_file;
 	accelerator_orig_compile_file = preload_compile_file;
 
-	orig_compiler_options = CG(compiler_options);
-	CG(compiler_options) |= ZEND_COMPILE_PRELOAD;
-	CG(compiler_options) |= ZEND_COMPILE_HANDLE_OP_ARRAY;
-//	CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES;
-	CG(compiler_options) |= ZEND_COMPILE_DELAYED_BINDING;
-	CG(compiler_options) |= ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION;
-//	CG(compiler_options) |= ZEND_COMPILE_IGNORE_OTHER_FILES;
-
 	orig_map_ptr_last = CG(map_ptr_last);
 
 	/* Compile and execute proloading script */
@@ -4207,7 +4202,6 @@ static int accel_preload(const char *config)
 		ret = FAILURE;
 	} zend_end_try();
 
-	CG(compiler_options) = orig_compiler_options;
 	PG(open_basedir) = orig_open_basedir;
 	accelerator_orig_compile_file = preload_orig_compile_file;
 	ZCG(enabled) = 1;
@@ -4500,6 +4494,7 @@ static int accel_finish_startup(void)
 		char *(*orig_getenv)(char *name, size_t name_len TSRMLS_DC) = sapi_module.getenv;
 		size_t (*orig_ub_write)(const char *str, size_t str_length) = sapi_module.ub_write;
 		void (*orig_flush)(void *server_context) = sapi_module.flush;
+		uint32_t orig_compiler_options = CG(compiler_options);
 #ifdef ZEND_SIGNALS
 		zend_bool old_reset_signals = SIGG(reset);
 #endif
@@ -4595,6 +4590,18 @@ static int accel_finish_startup(void)
 		sapi_module.ub_write = preload_ub_write;
 		sapi_module.flush = preload_flush;
 
+#ifndef ZEND_WIN32
+		if (in_child) {
+			CG(compiler_options) |= ZEND_COMPILE_PRELOAD_IN_CHILD;
+		}
+#endif
+		CG(compiler_options) |= ZEND_COMPILE_PRELOAD;
+		CG(compiler_options) |= ZEND_COMPILE_HANDLE_OP_ARRAY;
+		CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES;
+		CG(compiler_options) |= ZEND_COMPILE_DELAYED_BINDING;
+		CG(compiler_options) |= ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION;
+		CG(compiler_options) |= ZEND_COMPILE_IGNORE_OTHER_FILES;
+
 		zend_interned_strings_switch_storage(1);
 
 #ifdef ZEND_SIGNALS
@@ -4648,6 +4655,8 @@ static int accel_finish_startup(void)
 		SIGG(reset) = old_reset_signals;
 #endif
 
+		CG(compiler_options) = orig_compiler_options;
+
 		sapi_module.activate = orig_activate;
 		sapi_module.deactivate = orig_deactivate;
 		sapi_module.register_server_variables = orig_register_server_variables;