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glibc/hurd/port2fd.c
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/* Copyright (C) 1994-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <hurd.h> | |
#include <hurd/fd.h> | |
#include <hurd/signal.h> | |
#include <hurd/term.h> | |
#include <fcntl.h> | |
/* Store PORT in file descriptor D, doing appropriate ctty magic. | |
FLAGS are as for `open'; only O_IGNORE_CTTY and O_CLOEXEC are meaningful. | |
D should be locked, and will not be unlocked. */ | |
void | |
_hurd_port2fd (struct hurd_fd *d, io_t dport, int flags) | |
{ | |
mach_port_t cttyid; | |
io_t ctty = MACH_PORT_NULL; | |
if (!(flags & O_IGNORE_CTTY)) | |
__USEPORT (CTTYID, | |
({ | |
if (port != MACH_PORT_NULL && /* Do we have a ctty? */ | |
! __term_getctty (dport, &cttyid)) /* Could this be it? */ | |
{ | |
__mach_port_deallocate (__mach_task_self (), cttyid); | |
/* This port is capable of being a controlling tty. | |
Is it ours? */ | |
if (cttyid == port) | |
__term_open_ctty (dport, _hurd_pid, _hurd_pgrp, &ctty); | |
/* XXX if this port is our ctty, but we are not doing | |
ctty style i/o because term_become_ctty barfed, | |
what to do? */ | |
} | |
0; | |
})); | |
/* Install PORT in the descriptor cell, leaving it locked. */ | |
{ | |
mach_port_t old | |
= _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL; | |
d->port.port = dport; | |
d->flags = (flags & O_CLOEXEC) ? FD_CLOEXEC : 0; | |
if (old != MACH_PORT_NULL) | |
__mach_port_deallocate (__mach_task_self (), old); | |
} | |
_hurd_port_set (&d->ctty, ctty); | |
} |