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sapi/phpdbg/phpdbg_sigsafe.c
58 строк
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Nikita Popov
Replace zend_bool uses with bool
15 янв 2021, 14:33
15 янв 2021, 14:33
3e01f5a
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#include "phpdbg_sigsafe.h" #include "phpdbg.h" ZEND_EXTERN_MODULE_GLOBALS(phpdbg) #define STR(x) #x #define EXP_STR(x) STR(x) static void* zend_mm_mem_alloc(zend_mm_storage *storage, size_t size, size_t alignment) { if (EXPECTED(size <= PHPDBG_SIGSAFE_MEM_SIZE && !PHPDBG_G(sigsafe_mem).allocated)) { PHPDBG_G(sigsafe_mem).allocated = 1; return (void *) (((size_t) PHPDBG_G(sigsafe_mem).mem & ~(alignment - 1)) + alignment); } zend_quiet_write(PHPDBG_G(io)[PHPDBG_STDERR].fd, ZEND_STRL("Tried to allocate more than " EXP_STR(PHPDBG_SIGSAFE_MEM_SIZE) " bytes from stack memory in signal handler ... bailing out of signal handler\n")); if (*EG(bailout)) { LONGJMP(*EG(bailout), FAILURE); } zend_quiet_write(PHPDBG_G(io)[PHPDBG_STDERR].fd, ZEND_STRL("Bailed out without a bailout address in signal handler!\n")); return NULL; } static void zend_mm_mem_free(zend_mm_storage *storage, void *ptr, size_t size) { } void phpdbg_set_sigsafe_mem(char *buffer) { phpdbg_signal_safe_mem *mem = &PHPDBG_G(sigsafe_mem); const zend_mm_handlers phpdbg_handlers = { zend_mm_mem_alloc, zend_mm_mem_free, NULL, NULL, }; mem->mem = buffer; mem->allocated = 0; mem->heap = zend_mm_startup_ex(&phpdbg_handlers, NULL, 0); mem->old_heap = zend_mm_set_heap(mem->heap); } zend_mm_heap *phpdbg_original_heap_sigsafe_mem(void) { return PHPDBG_G(sigsafe_mem).old_heap; } void phpdbg_clear_sigsafe_mem(void) { zend_mm_set_heap(phpdbg_original_heap_sigsafe_mem()); PHPDBG_G(sigsafe_mem).mem = NULL; } bool phpdbg_active_sigsafe_mem(void) { return !!PHPDBG_G(sigsafe_mem).mem; }