sysdeps/mach/hurd/getlogin_r.c

   1 /* Reentrant function to return the current login name.  Hurd version.
   2 Copyright (C) 1996 Free Software Foundation, Inc.
   3 This file is part of the GNU C Library.
   4
   5 The GNU C Library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 License, or (at your option) any later version.
   9
  10 The GNU C Library is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <hurd.h>
  23 #include <string.h>
  24
  25 /* Return at most NAME_LEN characters of the login name of the user in NAME.
  26    If it cannot be determined or some other error occured, return the error
  27    code.  Otherwise return 0.  */
  28 int
  29 getlogin_r (name, name_len)
  30      char *name;
  31      size_t name_len;
  32 {
  33   static char login[1024];      /* XXX */
  34   error_t err;
  35
  36   if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
  37     return errno = err;
  38
  39   strncpy (name, login, name_len);
  40   return 0;
  41 }