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glibc  2.9
getlogin_r.c
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00001 /* Reentrant function to return the current login name.  Hurd version.
00002    Copyright (C) 1996, 2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <unistd.h>
00022 #include <hurd.h>
00023 #include <string.h>
00024 
00025 /* Return at most NAME_LEN characters of the login name of the user in NAME.
00026    If it cannot be determined or some other error occurred, return the error
00027    code.  Otherwise return 0.  */
00028 int
00029 getlogin_r (name, name_len)
00030      char *name;
00031      size_t name_len;
00032 {
00033   static char login[1024];  /* XXX */
00034   error_t err;
00035 
00036   if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
00037     return errno = err;
00038 
00039   strncpy (name, login, name_len);
00040   return 0;
00041 }
00042 libc_hidden_def (getlogin_r)