Merge "Do not check with vendor vndk version" into main
diff --git a/libcutils/ashmem-dev.cpp b/libcutils/ashmem-dev.cpp
index 5e01da9..410dbfd 100644
--- a/libcutils/ashmem-dev.cpp
+++ b/libcutils/ashmem-dev.cpp
@@ -44,13 +44,6 @@
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
-/*
- * The minimum vendor API level at and after which it is safe to use memfd.
- * This is to facilitate deprecation of ashmem.
- */
-#define MIN_MEMFD_VENDOR_API_LEVEL 29
-#define MIN_MEMFD_VENDOR_API_LEVEL_CHAR 'Q'
-
/* ashmem identity */
static dev_t __ashmem_rdev;
/*
@@ -88,55 +81,17 @@
/* Determine if vendor processes would be ok with memfd in the system:
*
- * If VNDK is using older libcutils, don't use memfd. This is so that the
- * same shared memory mechanism is used across binder transactions between
- * vendor partition processes and system partition processes.
+ * Previously this function checked if memfd is supported by checking if
+ * vendor VNDK version is greater than Q. As we can assume all treblelized
+ * device using this code is up to date enough to use memfd, memfd is allowed
+ * if the device is treblelized.
*/
static bool check_vendor_memfd_allowed() {
- std::string vndk_version = android::base::GetProperty("ro.vndk.version", "");
+ static bool is_treblelized = android::base::GetBoolProperty("ro.treble.enabled", false);
- if (vndk_version == "") {
- ALOGE("memfd: ro.vndk.version not defined or invalid (%s), this is mandated since P.\n",
- vndk_version.c_str());
- return false;
- }
-
- /* No issues if vendor is targetting current Dessert */
- if (vndk_version == "current") {
- return false;
- }
-
- /* Check if VNDK version is a number and act on it */
- char* p;
- long int vers = strtol(vndk_version.c_str(), &p, 10);
- if (*p == 0) {
- if (vers < MIN_MEMFD_VENDOR_API_LEVEL) {
- ALOGI("memfd: device VNDK version (%s) is < Q so using ashmem.\n",
- vndk_version.c_str());
- return false;
- }
-
- return true;
- }
-
- // Non-numeric should be a single ASCII character. Characters after the
- // first are ignored.
- if (tolower(vndk_version[0]) < 'a' || tolower(vndk_version[0]) > 'z') {
- ALOGE("memfd: ro.vndk.version not defined or invalid (%s), this is mandated since P.\n",
- vndk_version.c_str());
- return false;
- }
-
- if (tolower(vndk_version[0]) < tolower(MIN_MEMFD_VENDOR_API_LEVEL_CHAR)) {
- ALOGI("memfd: device is using VNDK version (%s) which is less than Q. Use ashmem only.\n",
- vndk_version.c_str());
- return false;
- }
-
- return true;
+ return is_treblelized;
}
-
/* Determine if memfd can be supported. This is just one-time hardwork
* which will be cached by the caller.
*/
