Merge "ashmem: Only use memfd if the kernel has ashmem-memfd compat support" into main (712feb76) · Commits · e / os / android_system_core

libcutils/ashmem-dev.cpp

+10 −0

Original line number	Diff line number	Diff line
		@@ -132,6 +132,16 @@ static bool __has_memfd_support() {
		return false;
		}

		/*
		* Ensure that the kernel supports ashmem ioctl commands on memfds. If not,
		* fall back to using ashmem.
		*/
		if (TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_SET_SIZE, getpagesize())) < 0) {
		ALOGE("ioctl(ASHMEM_SET_SIZE) failed: %s, no ashmem-memfd compat support.\n",
		strerror(errno));
		return false;
		}

		if (debug_log) {
		ALOGD("memfd: device has memfd support, using it\n");
		}