1  /* Copyright (C) 1991-2023 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 <stdlib.h>
      22  
      23  /* Return a string describing the errno code in ERRNUM.  */
      24  char *
      25  __strerror_r (int errnum, char *buf, size_t buflen)
      26  {
      27    char *err = (char *) __get_errlist (errnum);
      28    if (__glibc_unlikely (err == NULL))
      29      {
      30        __snprintf (buf, buflen, "%s%d", _("Unknown error "), errnum);
      31        return buf;
      32      }
      33  
      34    return _(err);
      35  }
      36  weak_alias (__strerror_r, strerror_r)
      37  libc_hidden_def (__strerror_r)