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 <hurd.h> |
19 | #include <hurd/fd.h> |
20 | #include <hurd/signal.h> |
21 | #include <hurd/term.h> |
22 | #include <fcntl.h> |
23 | |
24 | /* Store PORT in file descriptor D, doing appropriate ctty magic. |
25 | FLAGS are as for `open'; only O_IGNORE_CTTY and O_CLOEXEC are meaningful. |
26 | D should be locked, and will not be unlocked. */ |
27 | |
28 | void |
29 | _hurd_port2fd (struct hurd_fd *d, io_t dport, int flags) |
30 | { |
31 | mach_port_t cttyid; |
32 | io_t ctty = MACH_PORT_NULL; |
33 | |
34 | if (!(flags & O_IGNORE_CTTY)) |
35 | __USEPORT (CTTYID, |
36 | ({ |
37 | if (port != MACH_PORT_NULL /* Do we have a ctty? */ |
38 | && ! __term_getctty (dport, &cttyid)) |
39 | /* Could this be it? */ |
40 | { |
41 | __mach_port_deallocate (__mach_task_self (), cttyid); |
42 | /* This port is capable of being a controlling tty. |
43 | Is it ours? */ |
44 | if (cttyid == port) |
45 | __term_open_ctty (dport, _hurd_pid, _hurd_pgrp, &ctty); |
46 | /* XXX if this port is our ctty, but we are not doing |
47 | ctty style i/o because term_become_ctty barfed, |
48 | what to do? */ |
49 | } |
50 | 0; |
51 | })); |
52 | |
53 | /* Install PORT in the descriptor cell, leaving it locked. */ |
54 | { |
55 | mach_port_t old |
56 | = _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL; |
57 | d->port.port = dport; |
58 | d->flags = (flags & O_CLOEXEC) ? FD_CLOEXEC : 0; |
59 | if (old != MACH_PORT_NULL) |
60 | __mach_port_deallocate (__mach_task_self (), old); |
61 | } |
62 | |
63 | _hurd_port_set (&d->ctty, ctty); |
64 | } |
65 | |