memleak_detector: add memleak tracker

ohos inclusion
category: feature
issue: #I60ZNT
CVE: NA
Signed-off-by: zhengkaijie <2658880633@qq.com>
Change-Id: I1dd95ef186720ce1c3771a87e9b56b038e5a46ac

porting/linux/user/src/hook/malloc_common.c

@@ -50,4 +50,14 @@ int munmap(void* addr, size_t length)
 		return MuslMalloc(munmap)(addr, length);
 	}
 }
+
+size_t malloc_usable_size(void* addr)
+{
+	volatile const struct MallocDispatchType* dispatch_table = get_current_dispatch_table();
+	if (__predict_false(dispatch_table != NULL)) {
+		return dispatch_table->malloc_usable_size(addr);
+	} else {
+		return MuslMalloc(malloc_usable_size)(addr);
+	}
+}
 #endif

porting/linux/user/src/hook/musl_preinit.c

@@ -49,14 +49,24 @@ static struct MallocDispatchType __ohos_malloc_hook_init_dispatch = {
 static char *__malloc_hook_shared_lib = "libnative_hook.z.so";
 static char *__malloc_hook_function_prefix = "ohos_malloc_hook";
 volatile atomic_llong ohos_malloc_hook_shared_library;
+static char *kMemTrackSharedLib = "libmemleak_tracker.so";
+static char *kMemTrackPrefix = "track";
+static char *kMemTrackPropertyEnable = "const.hiview.memleak_tracker.enable";
+static char *kMemTrackSign = "true";
+bool checkLoadMallocMemTrack = false;
 void* function_of_shared_lib[LAST_FUNCTION];
 static enum EnumHookMode __hook_mode = STEP_HOOK_MODE;
+static char __memleak_param_value[OHOS_PARAM_MAX_SIZE + 1] = {0};
 
 static void  get_native_hook_param(char *buf, unsigned int buf_len)
 {
 #ifdef OHOS_ENABLE_PARAMETER
 	const char *key =  MUSL_HOOK_PARAM_NAME;
 	unsigned int len = buf_len;
+	(void)SystemReadParam(kMemTrackPropertyEnable, __memleak_param_value, &len);
+	if (strncmp(__memleak_param_value, kMemTrackSign, strlen(kMemTrackSign)) == 0) {
+		checkLoadMallocMemTrack = true;
+	}
 	(void)SystemReadParam(key, buf, &len);
 #else
 	return;
@@ -189,6 +199,17 @@ static bool init_memorytag_function(void* malloc_shared_library_handler, const c
 	return true;
 }
 
+static bool init_malloc_usable_size_function(void* malloc_shared_library_handler, MallocMallocUsableSizeType* func, const char* prefix)
+{
+	char symbol[MAX_SYM_NAME_SIZE];
+	snprintf(symbol, sizeof(symbol), "%s_%s", prefix, "malloc_usable_size");
+	*func = (MallocMallocUsableSizeType)(dlsym(malloc_shared_library_handler, symbol));
+	if (*func == NULL) {
+		return false;
+	}
+	return true;
+}
+
 static bool init_hook_functions(void* shared_library_handler, struct MallocDispatchType* table, const char* prefix)
 {
 	if (!init_malloc_function(shared_library_handler, &table->malloc, prefix)) {
@@ -206,6 +227,9 @@ static bool init_hook_functions(void* shared_library_handler, struct MallocDispa
 	if (!init_memorytag_function(shared_library_handler, prefix)) {
 		return false;
 	}
+	if (!init_malloc_usable_size_function(shared_library_handler, &table->malloc_usable_size, prefix)) {
+		return false;
+	}
 	return true;
 }
 
@@ -314,11 +338,11 @@ static bool is_empty_string(const char* str)
 	return true;
 }
 
-static void install_ohos_malloc_hook(struct musl_libc_globals* globals)
+static void install_ohos_malloc_hook(struct musl_libc_globals* globals, const char* shared_lib, const char* prefix)
 {
 	volatile void* shared_library_handle = (volatile void *)atomic_load_explicit(&ohos_malloc_hook_shared_library, memory_order_acquire);
 	assert(shared_library_handle == NULL || shared_library_handle == (volatile void*)-1);
-	shared_library_handle = (volatile void*)load_malloc_hook_shared_library(__malloc_hook_shared_lib, __malloc_hook_function_prefix, &globals->malloc_dispatch_table);
+	shared_library_handle = (volatile void*)load_malloc_hook_shared_library(shared_lib, prefix, &globals->malloc_dispatch_table);
 	if (shared_library_handle == NULL) {
 		// __musl_log(__MUSL_LOG_ERROR, "Can't load shared library '%s'\n", __malloc_hook_shared_lib);
 		return;
@@ -335,7 +359,11 @@ static void install_ohos_malloc_hook(struct musl_libc_globals* globals)
 
 static void* init_ohos_malloc_hook()
 {
-	install_ohos_malloc_hook(&__musl_libc_globals);
+	if (checkLoadMallocMemTrack) {
+		install_ohos_malloc_hook(&__musl_libc_globals, kMemTrackSharedLib, kMemTrackPrefix);
+	} else {
+		install_ohos_malloc_hook(&__musl_libc_globals, __malloc_hook_shared_lib, __malloc_hook_function_prefix);
+	}
 	return NULL;
 }
 
@@ -442,6 +470,10 @@ __attribute__((constructor(1))) static void __musl_initialize()
 			__hook_mode = STEP_HOOK_MODE;
 		}
 	}
+	volatile bool hook_disable = atomic_load_explicit(&__hook_enable_hook_flag, memory_order_acquire);
+	if (!hook_disable && checkLoadMallocMemTrack) {
+		init_ohos_malloc_hook();
+	}
 	__initialize_malloc();
 	errno = 0;
 }

porting/linux/user/src/hook/musl_preinit_common.c

@@ -12,6 +12,7 @@ struct MallocDispatchType __libc_malloc_default_dispatch = {
 	.free = MuslMalloc(free),
 	.mmap = MuslMalloc(mmap),
 	.munmap = MuslMalloc(munmap),
+	.malloc_usable_size = MuslMalloc(malloc_usable_size),
 };
 
 volatile atomic_bool __hook_enable_hook_flag;

porting/linux/user/src/hook/musl_preinit_common.h

@@ -11,6 +11,8 @@ extern struct MallocDispatchType __libc_malloc_default_dispatch;
 
 extern volatile atomic_bool __hook_enable_hook_flag;
 
+extern bool checkLoadMallocMemTrack;
+
 enum EnumFunc {
 	INITIALIZE_FUNCTION,
 	FINALIZE_FUNCTION,
@@ -94,6 +96,9 @@ inline volatile const struct MallocDispatchType* get_current_dispatch_table()
 #ifdef HOOK_ENABLE
 	volatile const struct MallocDispatchType* ret = (struct MallocDispatchType *)atomic_load_explicit(&__musl_libc_globals.current_dispatch_table, memory_order_acquire);
 	if (ret != NULL) {
+		if (checkLoadMallocMemTrack) {
+			return ret;
+		}
 		if (!__get_global_hook_flag()) {
 			ret = NULL;
 		}

porting/linux/user/src/internal/malloc_impl.h

@@ -95,6 +95,8 @@ hidden void *internal_calloc(size_t m, size_t n);
 
 hidden void *internal_realloc(void *p, size_t n);
 
+hidden size_t internal_malloc_usable_size(void *p);
+
 #ifdef MALLOC_RED_ZONE
 hidden void chunk_checksum_set(struct chunk *c);
 

porting/linux/user/src/malloc/malloc_usable_size.c

@@ -11,7 +11,16 @@ extern size_t je_malloc_usable_size(void *p);
 
 hidden void *(*const __realloc_dep)(void *, size_t) = realloc;
 
+#ifdef HOOK_ENABLE
+size_t __libc_malloc_usable_size(void* p)
+#else
 size_t malloc_usable_size(void *p)
+#endif
+{
+	return internal_malloc_usable_size(p);
+}
+
+size_t internal_malloc_usable_size(void* p)
 {
 #ifdef USE_JEMALLOC
 	return je_malloc_usable_size(p);