| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1994-2016 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 | <http://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)) /* Could this be it? */ |
| 39 | { |
| 40 | __mach_port_deallocate (__mach_task_self (), cttyid); |
| 41 | /* This port is capable of being a controlling tty. |
| 42 | Is it ours? */ |
| 43 | if (cttyid == port) |
| 44 | __term_open_ctty (dport, _hurd_pid, _hurd_pgrp, &ctty); |
| 45 | /* XXX if this port is our ctty, but we are not doing |
| 46 | ctty style i/o because term_become_ctty barfed, |
| 47 | what to do? */ |
| 48 | } |
| 49 | 0; |
| 50 | })); |
| 51 | |
| 52 | /* Install PORT in the descriptor cell, leaving it locked. */ |
| 53 | { |
| 54 | mach_port_t old |
| 55 | = _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL; |
| 56 | d->port.port = dport; |
| 57 | d->flags = (flags & O_CLOEXEC) ? FD_CLOEXEC : 0; |
| 58 | if (old != MACH_PORT_NULL) |
| 59 | __mach_port_deallocate (__mach_task_self (), old); |
| 60 | } |
| 61 | |
| 62 | _hurd_port_set (&d->ctty, ctty); |
| 63 | } |