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* hurd/new-fd.c (_hurd_new_fd): Initialize fcntl flags. * hurd/port2fd.c (_hurd_port2fd): Reset the fcntl flags when installing PORT in the descriptor cell. 1999-08-19 Roland McGrath <roland@baalperazim.frob.com> * sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Mark OPTION and TIMEOUT as outputs of the asm to indicate that the signal thread might mutate them. * hurd/intr-msg.c (_hurd_intr_rpc_mach_msg): Short circuit to plain mach_msg if only sending or only receiving (i.e., not an RPC). When making an RPC that might get interrupted, save OPTION and the portion of the message buffer that gets clobbered by an EINTR reply message, and properly restore them before attempting to retry the request message send.
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/* Copyright (C) 1994, 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/signal.h>
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#include <hurd/term.h>
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#include <fcntl.h>
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/* Store PORT in file descriptor D, doing appropriate ctty magic.
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FLAGS are as for `open'; only O_IGNORE_CTTY is meaningful.
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D should be locked, and will not be unlocked. */
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void
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_hurd_port2fd (struct hurd_fd *d, io_t port, int flags)
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{
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io_t ctty;
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mach_port_t cttyid;
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int is_ctty = !(flags & O_IGNORE_CTTY) && ! __term_getctty (port, &cttyid);
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if (is_ctty)
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{
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/* This port is capable of being a controlling tty.
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Is it ours? */
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struct hurd_port *const id = &_hurd_ports[INIT_PORT_CTTYID];
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__spin_lock (&id->lock);
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if (id->port == MACH_PORT_NULL)
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/* We have no controlling tty, so make this one it. */
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_hurd_port_locked_set (id, cttyid);
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else
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{
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if (cttyid != id->port)
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/* We have a controlling tty and this is not it. */
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is_ctty = 0;
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/* Either we don't want CTTYID, or ID->port already is it.
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So we don't need to change ID->port, and we can release
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the reference to CTTYID. */
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__spin_unlock (&id->lock);
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__mach_port_deallocate (__mach_task_self (), cttyid);
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}
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}
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if (!is_ctty || __term_open_ctty (port, _hurd_pid, _hurd_pgrp, &ctty) != 0)
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/* XXX if IS_CTTY, then this port is our ctty, but we are
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not doing ctty style i/o because term_become_ctty barfed.
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What to do? */
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/* No ctty magic happening here. */
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ctty = MACH_PORT_NULL;
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/* Install PORT in the descriptor cell, leaving it locked. */
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{
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mach_port_t old
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= _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL;
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d->port.port = port;
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d->flags = 0;
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if (old != MACH_PORT_NULL)
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__mach_port_deallocate (__mach_task_self (), old);
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}
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_hurd_port_set (&d->ctty, ctty);
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}
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