git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c84142e8 UD |
1 | /* Copyright (C) 1994, 1997 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 28f540f4 | 3 | |
| c84142e8 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Library General Public License as | |
| 6 | published by the Free Software Foundation; either version 2 of the | |
| 7 | License, or (at your option) any later version. | |
| 28f540f4 | 8 | |
| c84142e8 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 | |
| 12 | Library General Public License for more details. | |
| 28f540f4 | 13 | |
| c84142e8 UD |
14 | You should have received a copy of the GNU Library General Public |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 17 | Boston, MA 02111-1307, USA. */ | |
| 28f540f4 RM |
18 | |
| 19 | #include <hurd.h> | |
| 20 | #include <hurd/fd.h> | |
| 21 | #include <hurd/signal.h> | |
| 22 | #include <hurd/term.h> | |
| 23 | #include <fcntl.h> | |
| 24 | ||
| 25 | /* Store PORT in file descriptor D, doing appropriate ctty magic. | |
| 26 | FLAGS are as for `open'; only O_IGNORE_CTTY is meaningful. | |
| 27 | D should be locked, and will not be unlocked. */ | |
| 28 | ||
| 29 | void | |
| 30 | _hurd_port2fd (struct hurd_fd *d, io_t port, int flags) | |
| 31 | { | |
| 32 | io_t ctty; | |
| 33 | mach_port_t cttyid; | |
| 34 | int is_ctty = !(flags & O_IGNORE_CTTY) && ! __term_getctty (port, &cttyid); | |
| 35 | ||
| 36 | if (is_ctty) | |
| 37 | { | |
| 38 | /* This port is capable of being a controlling tty. | |
| 39 | Is it ours? */ | |
| 40 | struct hurd_port *const id = &_hurd_ports[INIT_PORT_CTTYID]; | |
| 41 | __spin_lock (&id->lock); | |
| 42 | if (id->port == MACH_PORT_NULL) | |
| 43 | /* We have no controlling tty, so make this one it. */ | |
| 44 | _hurd_port_locked_set (id, cttyid); | |
| 45 | else | |
| 46 | { | |
| 47 | if (cttyid != id->port) | |
| 48 | /* We have a controlling tty and this is not it. */ | |
| 49 | is_ctty = 0; | |
| 50 | /* Either we don't want CTTYID, or ID->port already is it. | |
| 51 | So we don't need to change ID->port, and we can release | |
| 52 | the reference to CTTYID. */ | |
| 53 | __spin_unlock (&id->lock); | |
| 54 | __mach_port_deallocate (__mach_task_self (), cttyid); | |
| 55 | } | |
| 56 | } | |
| 57 | ||
| 58 | if (!is_ctty || __term_open_ctty (port, _hurd_pid, _hurd_pgrp, &ctty) != 0) | |
| 59 | /* XXX if IS_CTTY, then this port is our ctty, but we are | |
| 60 | not doing ctty style i/o because term_become_ctty barfed. | |
| 61 | What to do? */ | |
| 62 | /* No ctty magic happening here. */ | |
| 63 | ctty = MACH_PORT_NULL; | |
| 64 | ||
| 65 | /* Install PORT in the descriptor cell, leaving it locked. */ | |
| 66 | { | |
| 67 | mach_port_t old | |
| 68 | = _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL; | |
| 69 | d->port.port = port; | |
| 70 | if (old != MACH_PORT_NULL) | |
| 71 | __mach_port_deallocate (__mach_task_self (), old); | |
| 72 | } | |
| 73 | ||
| 74 | _hurd_port_set (&d->ctty, ctty); | |
| 75 | } |