Write appcompat_override system properties
Create a second set of system properties, that can be overlaid over the
real ones if necessary, for appcompat purposes.
Bug: 291814949
Ignore-AOSP-First: Aosp -> internal merge conflict
Test: manual, treehugger, system_properties_test
Change-Id: I884a78b67679c1f0b90a6c0159b17ab007f8cc60
diff --git a/libc/include/sys/_system_properties.h b/libc/include/sys/_system_properties.h
index 1afb000..0821e24 100644
--- a/libc/include/sys/_system_properties.h
+++ b/libc/include/sys/_system_properties.h
@@ -42,7 +42,7 @@
#define PROP_SERVICE_NAME "property_service"
#define PROP_SERVICE_FOR_SYSTEM_NAME "property_service_for_system"
-#define PROP_FILENAME "/dev/__properties__"
+#define PROP_DIRNAME "/dev/__properties__"
#define PROP_MSG_SETPROP 1
#define PROP_MSG_SETPROP2 0x00020001
@@ -130,6 +130,16 @@
*/
int __system_properties_init(void);
+/*
+ * Reloads the system properties from disk.
+ *
+ * NOTE: Any pointers received from methods such as __system_property_find should be assumed to be
+ * invalid after this method is called.
+ *
+ * Returns 0 on success, -1 otherwise
+ */
+int __system_properties_reload();
+
/* Deprecated: use __system_property_wait instead. */
uint32_t __system_property_wait_any(uint32_t __old_serial);