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/* Copyright (C) 1994-2016 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 <string.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/term.h>
#include <hurd/fd.h>
/* Store at most BUFLEN characters of the pathname of the terminal FD is
open on in BUF. Return 0 on success, -1 otherwise. */
int
__ttyname_r (int fd, char *buf, size_t buflen)
{
error_t err;
char nodename[1024]; /* XXX */
size_t len;
nodename[0] = '\0';
if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename)))
{
if (err == MIG_BAD_ID || err == EOPNOTSUPP)
err = ENOTTY;
return __hurd_dfail (fd, err), errno;
}
len = strlen (nodename) + 1;
if (len > buflen)
{
errno = ERANGE;
return errno;
}
memcpy (buf, nodename, len);
return 0;
}
weak_alias (__ttyname_r, ttyname_r)
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