minor recovery changes
- add the --just_exit option to make recovery exit normally without doing anything
- make it possible to build updater extensions in C++
- add the clear_display command so that the updater binary can request
recovery switch to the NONE background UI
These are all used to support the notion of using OTA as a factory
reflash mechanism.
Change-Id: Ib00d1cbf540feff38f52a61a2cf198915b48488c
diff --git a/edify/expr.h b/edify/expr.h
index 8e1c638..0d8ed8f 100644
--- a/edify/expr.h
+++ b/edify/expr.h
@@ -21,6 +21,10 @@
#include "yydefs.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#define MAX_STRING_LEN 1024
typedef struct Expr Expr;
@@ -152,7 +156,7 @@
// Use printf-style arguments to compose an error message to put into
// *state. Returns NULL.
-Value* ErrorAbort(State* state, char* format, ...);
+Value* ErrorAbort(State* state, const char* format, ...) __attribute__((format(printf, 2, 3)));
// Wrap a string into a Value, taking ownership of the string.
Value* StringValue(char* str);
@@ -160,4 +164,8 @@
// Free a Value object.
void FreeValue(Value* v);
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
#endif // _EXPRESSION_H