From 8913f82c266ed35bdf431d61e89ee9eb682f2192 Mon Sep 17 00:00:00 2001
From: Paul Bakker <p.j.bakker@polarssl.org>
Date: Sat, 14 Jan 2012 18:07:41 +0000
Subject: [PATCH]  - Fixed compiler warning for unreferenced ret in md_file()
 when POLARSSL_FS_IO not declared

---
 include/polarssl/error.h |  4 ++--
 include/polarssl/md.h    |  3 +--
 library/error.c          |  6 ++----
 library/md.c             | 10 +++++-----
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/include/polarssl/error.h b/include/polarssl/error.h
index 78ad36255..9c1707105 100644
--- a/include/polarssl/error.h
+++ b/include/polarssl/error.h
@@ -72,8 +72,8 @@
  * X509     2   21
  * DHM      3   6
  * RSA      4   9
- * MD       5   1
- * CIPER    6   1
+ * MD       5   4
+ * CIPHER   6   5
  * SSL      7   30
  *
  * Module dependent error code (5 bits 0x.08.-0x.F8.)
diff --git a/include/polarssl/md.h b/include/polarssl/md.h
index f62ef2038..88596cb04 100644
--- a/include/polarssl/md.h
+++ b/include/polarssl/md.h
@@ -42,8 +42,7 @@
 #define POLARSSL_ERR_MD_FEATURE_UNAVAILABLE                -0x5080  /**< The selected feature is not available. */
 #define POLARSSL_ERR_MD_BAD_INPUT_DATA                     -0x5100  /**< Bad input parameters to function. */
 #define POLARSSL_ERR_MD_ALLOC_FAILED                       -0x5180  /**< Failed to allocate memory. */
-#define POLARSSL_ERR_MD_FILE_OPEN_FAILED                   -0x5200  /**< Opening of file failed. */
-#define POLARSSL_ERR_MD_FILE_READ_FAILED                   -0x5280  /**< Failure when reading from file. */
+#define POLARSSL_ERR_MD_FILE_IO_ERROR                      -0x5200  /**< Opening or reading of file failed. */
 
 typedef enum {
     POLARSSL_MD_NONE=0,
diff --git a/library/error.c b/library/error.c
index 5dcd17580..9bc503429 100644
--- a/library/error.c
+++ b/library/error.c
@@ -177,10 +177,8 @@ void error_strerror( int ret, char *buf, size_t buflen )
             snprintf( buf, buflen, "MD - Bad input parameters to function" );
         if( use_ret == -(POLARSSL_ERR_MD_ALLOC_FAILED) )
             snprintf( buf, buflen, "MD - Failed to allocate memory" );
-        if( use_ret == -(POLARSSL_ERR_MD_FILE_OPEN_FAILED) )
-            snprintf( buf, buflen, "MD - Opening of file failed" );
-        if( use_ret == -(POLARSSL_ERR_MD_FILE_READ_FAILED) )
-            snprintf( buf, buflen, "MD - Failure when reading from file" );
+        if( use_ret == -(POLARSSL_ERR_MD_FILE_IO_ERROR) )
+            snprintf( buf, buflen, "MD - Opening or reading of file failed" );
 #endif /* POLARSSL_MD_C */
 
 #if defined(POLARSSL_PEM_C)
diff --git a/library/md.c b/library/md.c
index 51fb82e15..d15bf1dca 100644
--- a/library/md.c
+++ b/library/md.c
@@ -222,19 +222,19 @@ int md( const md_info_t *md_info, const unsigned char *input, size_t ilen,
 
 int md_file( const md_info_t *md_info, const char *path, unsigned char *output )
 {
+#if defined(POLARSSL_FS_IO)
     int ret;
+#endif
 
     if( md_info == NULL )
         return POLARSSL_ERR_MD_BAD_INPUT_DATA;
 
 #if defined(POLARSSL_FS_IO)
     ret = md_info->file_func( path, output );
-    if( ret == 2 )
-        return POLARSSL_ERR_MD_FILE_OPEN_FAILED;
-    if( ret == 3 )
-        return POLARSSL_ERR_MD_FILE_READ_FAILED;
+    if( ret != 0 )
+        return( POLARSSL_ERR_MD_FILE_IO_ERROR + ret );
 
-    return ret;
+    return( ret );
 #else
     ((void) path);
     ((void) output);