git.sur5r.net Git - cc65/blob - libsrc/common/perror.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 perror.c                                  */
   4 /*                                                                           */
   5 /*                       Print a system error message                        */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 1998-2010, Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include <errno.h>
  39
  40
  41
  42 void __fastcall__ perror (const char* msg)
  43 {
  44     /* Fetch the message that corresponds to errno */
  45     const char* errormsg = strerror (_errno);
  46
  47     /* Different output depending on msg */
  48     if (msg) {
  49         fprintf (stderr, "%s: %s\n", msg, errormsg);
  50     } else {
  51         fprintf (stderr, "%s\n", errormsg);
  52     }
  53 }
  54
  55
  56