Back to index

glibc  2.9
getlogin.c
Go to the documentation of this file.
00001 /* Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <stddef.h>
00020 #include <errno.h>
00021 #include <unistd.h>
00022 #include <hurd.h>
00023 
00024 /* Return the login name of the user, or NULL if it can't be determined.
00025    The returned pointer, if not NULL, is good only until the next call.  */
00026 char *
00027 getlogin ()
00028 {
00029   static char login[1024];  /* XXX */
00030   error_t err;
00031 
00032   if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
00033     {
00034       errno = err;
00035       return NULL;
00036     }
00037 
00038   return login;
00039 }