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/* Reentrant function to return the current login name. Hurd version.
Copyright (C) 1996-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <string.h>
/* Return at most NAME_LEN characters of the login name of the user in NAME.
If it cannot be determined or some other error occurred, return the error
code. Otherwise return 0. */
int
getlogin_r (name, name_len)
char *name;
size_t name_len;
{
string_t login;
error_t err;
if (err = __USEPORT (PROC, __proc_getlogin (port, login)))
return errno = err;
size_t len = __strnlen (login, sizeof login - 1) + 1;
if (len > name_len)
{
errno = ERANGE;
return errno;
}
memcpy (name, login, len);
return 0;
}
libc_hidden_def (getlogin_r)
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