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04277e02 | 1 | /* Copyright (C) 1994-2019 Free Software Foundation, Inc. |
478b92f0 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
478b92f0 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
478b92f0 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | #include <errno.h> | |
19 | #include <unistd.h> | |
20 | #include <hurd.h> | |
21 | #include <hurd/term.h> | |
22 | #include <hurd/fd.h> | |
23 | ||
24 | /* Return the pathname of the terminal FD is open on, or NULL on errors. | |
25 | The returned storage is good only until the next call to this function. */ | |
26 | char * | |
27 | ttyname (int fd) | |
28 | { | |
29 | error_t err; | |
30 | static char nodename[1024]; /* XXX */ | |
31 | ||
32 | nodename[0] = '\0'; | |
33 | if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename))) | |
fd3ebeda ST |
34 | { |
35 | if (err == MIG_BAD_ID || err == EOPNOTSUPP) | |
36 | err = ENOTTY; | |
37 | return __hurd_dfail (fd, err), NULL; | |
38 | } | |
28f540f4 RM |
39 | |
40 | return nodename; | |
41 | } |