contrib/opie/libmissing/strerror.c

   1 /* strerror.c: A replacement for the strerror function
   2
   3 %%% copyright-cmetz
   4 This software is Copyright 1996 by Craig Metz, All Rights Reserved.
   5 The Inner Net License Version 2 applies to this software.
   6 You should have received a copy of the license with this software. If
   7 you didn't get a copy, you may request one from <license@inner.net>.
   8
   9         History:
  10
  11         Created by cmetz for OPIE 2.2.
  12 */
  13
  14 #include "opie_cfg.h"
  15 #include "opie.h"
  16
  17 char *strerror FUNCTION((errnum), int errnum)
  18 {
  19 #if HAVE_SYS_ERRLIST
  20   extern char *sys_errlist[];
  21   return sys_errlist[errnum];
  22 #else /* NEED_STRERROR */
  23 #if HAVE__SYS_ERRLIST
  24   extern char *_sys_errlist[];
  25   return sys_errlist[errnum];
  26 #else /* HAVE__SYS_ERRLIST */
  27   static char hexdigits[] = "0123456789abcdef";
  28   static char buffer[] = "System error 0x42";
  29   buffer[15] = hexdigits[(errnum >> 4) & 0x0f];
  30   buffer[16] = hexdigits[errnum & 0x0f];
  31   return buffer;
  32 #endif /* HAVE__SYS_ERRLIST */
  33 #endif  /* NEED_STRERROR */
  34 }