From 91947445956817f10b29fc888feaaa9ca74a4823 Mon Sep 17 00:00:00 2001
From: Janos Follath <janos.follath@arm.com>
Date: Fri, 18 Mar 2016 13:49:27 +0000
Subject: [PATCH] Add exit value macros to platform abstraction layer.

---
 ChangeLog                  |  1 +
 include/mbedtls/config.h   |  4 +++-
 include/mbedtls/platform.h | 22 +++++++++++++++++++++-
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 007f60418..cdbac2e8b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -22,6 +22,7 @@ Changes
      don't use the optimized assembly for bignum multiplication. This removes
      the need to pass -fomit-frame-pointer to avoid a build error with -O0.
    * Disabled SSLv3 in the default configuration. 
+   * Add exit value macros to the platform abstraction layer.
 
 = mbed TLS 2.2.1 released 2016-01-05
 
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index d9b37e0ce..c9332e113 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -131,7 +131,7 @@
 //#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
 
 /**
- * \def MBEDTLS_PLATFORM_EXIT_ALT
+ * \def MBEDTLS_PLATFORM_XXX_ALT
  *
  * MBEDTLS_PLATFORM_XXX_ALT: Uncomment a macro to let mbed TLS support the
  * function in the platform abstraction layer.
@@ -2469,6 +2469,8 @@
 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
 /* Note: your snprintf must correclty zero-terminate the buffer! */
 //#define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
+//#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
+//#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
 
 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index f71f1b649..1371ff1c6 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -64,7 +64,13 @@ extern "C" {
 #define MBEDTLS_PLATFORM_STD_FREE       free /**< Default free to use */
 #endif
 #if !defined(MBEDTLS_PLATFORM_STD_EXIT)
-#define MBEDTLS_PLATFORM_STD_EXIT      exit /**< Default free to use */
+#define MBEDTLS_PLATFORM_STD_EXIT      exit /**< Default exit to use */
+#endif
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
+#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS  EXIT_SUCCESS /**< Default exit value to use */
+#endif
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
+#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE  EXIT_FAILURE /**< Default exit value to use */
 #endif
 #else /* MBEDTLS_PLATFORM_NO_STD_FUNCTIONS */
 #if defined(MBEDTLS_PLATFORM_STD_MEM_HDR)
@@ -207,6 +213,20 @@ int mbedtls_platform_set_exit( void (*exit_func)( int status ) );
 #endif /* MBEDTLS_PLATFORM_EXIT_MACRO */
 #endif /* MBEDTLS_PLATFORM_EXIT_ALT */
 
+/*
+ * The default exit values
+ */
+#if defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
+#define MBEDTLS_EXIT_SUCCESS MBEDTLS_PLATFORM_STD_EXIT_SUCCESS
+#else
+#define MBEDTLS_EXIT_SUCCESS 0
+#endif
+#if defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
+#define MBEDTLS_EXIT_FAILURE MBEDTLS_PLATFORM_STD_EXIT_FAILURE
+#else
+#define MBEDTLS_EXIT_FAILURE 1
+#endif
+
 #ifdef __cplusplus
 }
 #endif