sysdeps/mach/hurd/getlogin.c

   1 /* Copyright (C) 1991, 1992, 1993, 1994, 1997 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <stddef.h>
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <hurd.h>
  23
  24 /* Return the login name of the user, or NULL if it can't be determined.
  25    The returned pointer, if not NULL, is good only until the next call.  */
  26 char *
  27 getlogin ()
  28 {
  29   static char login[1024];      /* XXX */
  30   error_t err;
  31
  32   if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
  33     {
  34       errno = err;
  35       return NULL;
  36     }
  37
  38   return login;
  39 }