diff options
Diffstat (limited to 'mach/msgserver.c')
-rw-r--r-- | mach/msgserver.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/mach/msgserver.c b/mach/msgserver.c deleted file mode 100644 index d95e545985..0000000000 --- a/mach/msgserver.c +++ /dev/null @@ -1,199 +0,0 @@ -/* Copyright (C) 1993-2017 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/>. */ - -/* Based on CMU's mach_msg_server.c revision 2.4 of 91/05/14, and thus - under the following copyright. Rewritten by Roland McGrath (FSF) - 93/12/06 to use stack space instead of malloc, and to handle - large messages with MACH_RCV_LARGE. */ - -/* - * Mach Operating System - * Copyright (c) 1991,1990 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ -/* - * (pre-GNU) HISTORY - * - * Revision 2.4 91/05/14 17:53:22 mrt - * Correcting copyright - * - * Revision 2.3 91/02/14 14:17:47 mrt - * Added new Mach copyright - * [91/02/13 12:44:20 mrt] - * - * Revision 2.2 90/08/06 17:23:58 rpd - * Created. - * - */ - - -#include <mach.h> -#include <mach/mig_errors.h> -#include <stdlib.h> /* For malloc and free. */ -#include <assert.h> - -#ifdef NDR_CHAR_ASCII /* OSF Mach flavors have different names. */ -# define mig_reply_header_t mig_reply_error_t -#endif - -mach_msg_return_t -__mach_msg_server_timeout (boolean_t (*demux) (mach_msg_header_t *request, - mach_msg_header_t *reply), - mach_msg_size_t max_size, - mach_port_t rcv_name, - mach_msg_option_t option, - mach_msg_timeout_t timeout) -{ - mig_reply_header_t *request, *reply; - mach_msg_return_t mr; - - if (max_size == 0) - { -#ifdef MACH_RCV_LARGE - option |= MACH_RCV_LARGE; - max_size = 2 * __vm_page_size; /* Generic. Good? XXX */ -#else - max_size = 4 * __vm_page_size; /* XXX */ -#endif - } - - request = __alloca (max_size); - reply = __alloca (max_size); - - while (1) - { - get_request: - mr = __mach_msg (&request->Head, MACH_RCV_MSG|option, - 0, max_size, rcv_name, - timeout, MACH_PORT_NULL); - while (mr == MACH_MSG_SUCCESS) - { - /* We have a request message. - Pass it to DEMUX for processing. */ - - (void) (*demux) (&request->Head, &reply->Head); - assert (reply->Head.msgh_size <= max_size); - - switch (reply->RetCode) - { - case KERN_SUCCESS: - /* Hunky dory. */ - break; - - case MIG_NO_REPLY: - /* The server function wanted no reply sent. - Loop for another request. */ - goto get_request; - - default: - /* Some error; destroy the request message to release any - port rights or VM it holds. Don't destroy the reply port - right, so we can send an error message. */ - request->Head.msgh_remote_port = MACH_PORT_NULL; - __mach_msg_destroy (&request->Head); - break; - } - - if (reply->Head.msgh_remote_port == MACH_PORT_NULL) - { - /* No reply port, so destroy the reply. */ - if (reply->Head.msgh_bits & MACH_MSGH_BITS_COMPLEX) - __mach_msg_destroy (&reply->Head); - goto get_request; - } - - /* Send the reply and the get next request. */ - - { - /* Swap the request and reply buffers. mach_msg will read the - reply message from the buffer we pass and write the new - request message to the same buffer. */ - void *tmp = request; - request = reply; - reply = tmp; - } - - mr = __mach_msg (&request->Head, - MACH_SEND_MSG|MACH_RCV_MSG|option, - request->Head.msgh_size, max_size, rcv_name, - timeout, MACH_PORT_NULL); - } - - /* A message error occurred. */ - - switch (mr) - { - case MACH_RCV_TOO_LARGE: -#ifdef MACH_RCV_LARGE - /* The request message is larger than MAX_SIZE, and has not - been dequeued. The message header has the actual size of - the message. We recurse here in hopes that the compiler - will optimize the tail-call and allocate some more stack - space instead of way too much. */ - return __mach_msg_server_timeout (demux, request->Head.msgh_size, - rcv_name, option, timeout); -#else - /* XXX the kernel has destroyed the msg */ - break; -#endif - - case MACH_SEND_INVALID_DEST: - /* The reply can't be delivered, so destroy it. This error - indicates only that the requester went away, so we - continue and get the next request. */ - __mach_msg_destroy (&request->Head); - break; - - default: - /* Some other form of lossage; return to caller. */ - return mr; - } - } -} -weak_alias (__mach_msg_server_timeout, mach_msg_server_timeout) - -mach_msg_return_t -__mach_msg_server (boolean_t (*demux) (mach_msg_header_t *in, - mach_msg_header_t *out), - mach_msg_size_t max_size, - mach_port_t rcv_name) -{ - return __mach_msg_server_timeout (demux, max_size, rcv_name, - MACH_MSG_OPTION_NONE, - MACH_MSG_TIMEOUT_NONE); -} -weak_alias (__mach_msg_server, mach_msg_server) |