1 | /* Copyright (C) 1994-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
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. |
8 | |
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 |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <string.h> |
20 | #include <unistd.h> |
21 | #include <hurd.h> |
22 | #include <hurd/term.h> |
23 | #include <hurd/fd.h> |
24 | |
25 | /* Store at most BUFLEN characters of the pathname of the terminal FD is |
26 | open on in BUF. Return 0 on success, -1 otherwise. */ |
27 | int |
28 | __ttyname_r (int fd, char *buf, size_t buflen) |
29 | { |
30 | error_t err; |
31 | char nodename[1024]; /* XXX */ |
32 | size_t len; |
33 | |
34 | nodename[0] = '\0'; |
35 | if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename))) |
36 | { |
37 | if (err == MIG_BAD_ID || err == EOPNOTSUPP) |
38 | err = ENOTTY; |
39 | return __hurd_dfail (fd, err), errno; |
40 | } |
41 | |
42 | len = strlen (nodename) + 1; |
43 | if (len > buflen) |
44 | { |
45 | errno = ERANGE; |
46 | return errno; |
47 | } |
48 | |
49 | memcpy (buf, nodename, len); |
50 | return 0; |
51 | } |
52 | libc_hidden_def (__ttyname_r) |
53 | weak_alias (__ttyname_r, ttyname_r) |
54 | |