1                 : /*
       2                 :  * Copyright (c) 2014 The Native Client Authors. All rights reserved.
       3                 :  * Use of this source code is governed by a BSD-style license that can be
       4                 :  * found in the LICENSE file.
       5                 :  */
       6                 : 
       7                 : #include <errno.h>
       8                 : #include <string.h>
       9                 : 
      10                 : #include "native_client/src/shared/platform/nacl_error.h"
      11                 : 
      12               0 : int NaClGetLastErrorString(char* buffer, size_t length) {
      13                 : #if defined(__native_client__) || (NACL_LINUX && !NACL_ANDROID)
      14                 :   char* message;
      15                 :   /*
      16                 :    * Note some Linux distributions and newlib provide only the GNU version of
      17                 :    * strerror_r().
      18                 :    */
      19               0 :   if (buffer == NULL || length == 0) {
      20               0 :     errno = ERANGE;
      21               0 :     return -1;
      22                 :   }
      23               0 :   message = strerror_r(errno, buffer, length);
      24               0 :   if (message != buffer) {
      25               0 :     size_t message_bytes = strlen(message) + 1;
      26               0 :     if (message_bytes < length) {
      27               0 :       length = message_bytes;
      28                 :     }
      29               0 :     memmove(buffer, message, length);
      30               0 :     buffer[length - 1] = '\0';
      31                 :   }
      32               0 :   return 0;
      33                 : #else
      34                 :   return strerror_r(errno, buffer, length);
      35                 : #endif
      36                 : }