sysdeps/mach/_strerror.c

   1 /* Copyright (C) 1993-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <string.h>
  19 #include <libintl.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <mach/error.h>
  23 #include <errorlib.h>
  24
  25 /* Return a string describing the errno code in ERRNUM.  */
  26 char *
  27 __strerror_r (int errnum, char *buf, size_t buflen)
  28 {
  29   int system;
  30   int sub;
  31   int code;
  32   const struct error_system *es;
  33   extern void __mach_error_map_compat (int *);
  34
  35   __mach_error_map_compat (&errnum);
  36
  37   system = err_get_system (errnum);
  38   sub = err_get_sub (errnum);
  39   code = err_get_code (errnum);
  40
  41   if (system > err_max_system || ! __mach_error_systems[system].bad_sub)
  42     {
  43       __snprintf (buf, buflen, "%s%X", _("Error in unknown error system: "),
  44                   errnum);
  45       return buf;
  46     }
  47
  48   es = &__mach_error_systems[system];
  49
  50   if (sub >= es->max_sub)
  51     return (char *) es->bad_sub;
  52
  53   if (code >= es->subsystem[sub].max_code)
  54     {
  55       __snprintf (buf, buflen, "%s%s %d", _("Unknown error "),
  56                   es->subsystem[sub].subsys_name, errnum);
  57       return buf;
  58     }
  59
  60   return (char *) _(es->subsystem[sub].codes[code]);
  61 }
  62 libc_hidden_def (__strerror_r)
  63 weak_alias (__strerror_r, strerror_r)