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to ensure a sane installation. (mach_interface_list): Define this variable by checking for .defs files found in various variants. * configure.in (mach_interface_list): AC_SUBST this. * config.make.in (mach-interface-list): New substituted variable. * mach/Makefile (user-interfaces): Define this using the value of $(mach-interface-list) instead of mach, mach4. Updated other references to mach_interface to use it as well. * sysdeps/mach/powerpc/machine-lock.h: Avoid multi-line strings. * mach/msgserver.c [NDR_CHAR_ASCII] (mig_reply_header_t): #define as mig_reply_error_t for OSF Mach variant. * mach/Makefile (routines): Remove bootprivport. * mach/bootprivport.c: File removed. It has never been used. * mach/msg-destroy.c (__mach_msg_destroy) [MACH_MSG_PORT_DESCRIPTOR]: Grok the OSF flavor of message format. (mach_msg_destroy_port): For MAKE_SEND and MAKE_SEND_ONCE rights, create an destroy a right to ensure proper no-senders notification. 2002-02-06 Roland McGrath <roland@frob.com> * hurd/Versions (libc: GLIBC_2.0): Move cthread_fork, cthread_detach to here if 2.0 compatibility enabled ... (libc: GLIBC_2.1.3): ... from here.
224 lines
6.9 KiB
C
224 lines
6.9 KiB
C
/* Copyright (C) 1993, 1994, 1995, 1996, 2001 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Based on CMU's mach_msg_server.c revision 2.4 of 91/05/14, and thus
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under the following copyright. Rewritten by Roland McGrath (FSF)
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93/12/06 to use stack space instead of malloc, and to handle
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large messages with MACH_RCV_LARGE. */
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* HISTORY
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* $Log$
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* Revision 1.8 2002/02/17 07:13:32 roland
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* 2002-02-16 Roland McGrath <roland@frob.com>
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*
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* * mach/msgserver.c [NDR_CHAR_ASCII] (mig_reply_header_t): #define as
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* mig_reply_error_t for OSF Mach variant.
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*
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* Revision 1.7 2001/07/06 04:55:34 aj
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* Update to LGPL v2.1.
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*
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* Revision 1.6 2001/04/09 21:23:38 roland
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* 2001-04-07 Roland McGrath <roland@frob.com>
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*
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* * mach/msgserver.c (__mach_msg_server_timeout): Add an assert.
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*
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* Revision 1.5 1996/12/20 01:32:35 drepper
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* Update from main archive 961219
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*
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* Revision 1.5 1996/12/19 20:23:45 drepper
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* Spelling corrections.
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*
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* Revision 1.4 1996/01/29 15:44:23 roland
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* Declare DEMUX arg with prototype.
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*
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* Revision 1.3 1995/01/21 15:00:57 roland
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* Converted to use weak aliases with macros from libc-symbols.h.
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*
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* Revision 1.2 1994/10/10 07:20:14 roland
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* Increase default MAX_SIZE to two pages.
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*
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* Revision 1.1 1993/12/06 23:25:25 roland
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* entered into RCS
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*
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* Revision 2.4 91/05/14 17:53:22 mrt
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* Correcting copyright
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*
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* Revision 2.3 91/02/14 14:17:47 mrt
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* Added new Mach copyright
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* [91/02/13 12:44:20 mrt]
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*
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* Revision 2.2 90/08/06 17:23:58 rpd
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* Created.
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*
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*/
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#include <mach.h>
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#include <mach/mig_errors.h>
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#include <stdlib.h> /* For malloc and free. */
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#include <assert.h>
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#ifdef NDR_CHAR_ASCII /* OSF Mach flavors have different names. */
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# define mig_reply_header_t mig_reply_error_t
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#endif
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mach_msg_return_t
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__mach_msg_server_timeout (boolean_t (*demux) (mach_msg_header_t *request,
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mach_msg_header_t *reply),
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mach_msg_size_t max_size,
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mach_port_t rcv_name,
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mach_msg_option_t option,
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mach_msg_timeout_t timeout)
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{
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register mig_reply_header_t *request, *reply;
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register mach_msg_return_t mr;
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if (max_size == 0)
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{
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option |= MACH_RCV_LARGE;
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max_size = 2 * __vm_page_size; /* Generic. Good? XXX */
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}
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request = __alloca (max_size);
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reply = __alloca (max_size);
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while (1)
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{
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get_request:
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mr = __mach_msg (&request->Head, MACH_RCV_MSG|option,
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0, max_size, rcv_name,
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timeout, MACH_PORT_NULL);
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while (mr == MACH_MSG_SUCCESS)
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{
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/* We have a request message.
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Pass it to DEMUX for processing. */
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(void) (*demux) (&request->Head, &reply->Head);
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assert (reply->Head.msgh_size <= max_size);
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switch (reply->RetCode)
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{
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case KERN_SUCCESS:
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/* Hunky dory. */
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break;
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case MIG_NO_REPLY:
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/* The server function wanted no reply sent.
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Loop for another request. */
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goto get_request;
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default:
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/* Some error; destroy the request message to release any
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port rights or VM it holds. Don't destroy the reply port
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right, so we can send an error message. */
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request->Head.msgh_remote_port = MACH_PORT_NULL;
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__mach_msg_destroy (&request->Head);
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break;
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}
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if (reply->Head.msgh_remote_port == MACH_PORT_NULL)
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{
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/* No reply port, so destroy the reply. */
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if (reply->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX)
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__mach_msg_destroy (&reply->Head);
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goto get_request;
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}
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/* Send the reply and the get next request. */
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{
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/* Swap the request and reply buffers. mach_msg will read the
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reply message from the buffer we pass and write the new
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request message to the same buffer. */
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void *tmp = request;
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request = reply;
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reply = tmp;
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}
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mr = __mach_msg (&request->Head,
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MACH_SEND_MSG|MACH_RCV_MSG|option,
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request->Head.msgh_size, max_size, rcv_name,
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timeout, MACH_PORT_NULL);
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}
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/* A message error occurred. */
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switch (mr)
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{
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case MACH_RCV_TOO_LARGE:
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/* The request message is larger than MAX_SIZE, and has not
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been dequeued. The message header has the actual size of
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the message. We recurse here in hopes that the compiler
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will optimize the tail-call and allocate some more stack
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space instead of way too much. */
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return __mach_msg_server_timeout (demux, request->Head.msgh_size,
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rcv_name, option, timeout);
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case MACH_SEND_INVALID_DEST:
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/* The reply can't be delivered, so destroy it. This error
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indicates only that the requester went away, so we
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continue and get the next request. */
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__mach_msg_destroy (&request->Head);
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break;
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default:
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/* Some other form of lossage; return to caller. */
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return mr;
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}
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}
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}
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weak_alias (__mach_msg_server_timeout, mach_msg_server_timeout)
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mach_msg_return_t
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__mach_msg_server (demux, max_size, rcv_name)
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boolean_t (*demux) (mach_msg_header_t *in, mach_msg_header_t *out);
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mach_msg_size_t max_size;
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mach_port_t rcv_name;
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{
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return __mach_msg_server_timeout (demux, max_size, rcv_name,
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MACH_MSG_OPTION_NONE,
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MACH_MSG_TIMEOUT_NONE);
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}
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weak_alias (__mach_msg_server, mach_msg_server)
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