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Annotation of kernel/ipc/ipc_init.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Copyright (c) 1995, 1994, 1993, 1992, 1991, 1990  
        !            27:  * Open Software Foundation, Inc. 
        !            28:  *  
        !            29:  * Permission to use, copy, modify, and distribute this software and 
        !            30:  * its documentation for any purpose and without fee is hereby granted, 
        !            31:  * provided that the above copyright notice appears in all copies and 
        !            32:  * that both the copyright notice and this permission notice appear in 
        !            33:  * supporting documentation, and that the name of ("OSF") or Open Software 
        !            34:  * Foundation not be used in advertising or publicity pertaining to 
        !            35:  * distribution of the software without specific, written prior permission. 
        !            36:  *  
        !            37:  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
        !            38:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
        !            39:  * FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL OSF BE LIABLE FOR ANY 
        !            40:  * SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
        !            41:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 
        !            42:  * ACTION OF CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING 
        !            43:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE 
        !            44:  */
        !            45: /*
        !            46:  * OSF Research Institute MK6.1 (unencumbered) 1/31/1995
        !            47:  */
        !            48: /* 
        !            49:  * Mach Operating System
        !            50:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !            51:  * All Rights Reserved.
        !            52:  * 
        !            53:  * Permission to use, copy, modify and distribute this software and its
        !            54:  * documentation is hereby granted, provided that both the copyright
        !            55:  * notice and this permission notice appear in all copies of the
        !            56:  * software, derivative works or modified versions, and any portions
        !            57:  * thereof, and that both notices appear in supporting documentation.
        !            58:  * 
        !            59:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            60:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            61:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            62:  * 
        !            63:  * Carnegie Mellon requests users of this software to return to
        !            64:  * 
        !            65:  *  Software Distribution Coordinator  or  [email protected]
        !            66:  *  School of Computer Science
        !            67:  *  Carnegie Mellon University
        !            68:  *  Pittsburgh PA 15213-3890
        !            69:  * 
        !            70:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            71:  * the rights to redistribute these changes.
        !            72:  */
        !            73: /*
        !            74:  *     File:   ipc/ipc_init.c
        !            75:  *     Author: Rich Draves
        !            76:  *     Date:   1989
        !            77:  *
        !            78:  *     Functions to initialize the IPC system.
        !            79:  */
        !            80:  
        !            81: #import <mach/features.h>
        !            82: 
        !            83: #include <mach/kern_return.h>
        !            84: #include <kern/mach_param.h>
        !            85: #include <kern/ipc_host.h>
        !            86: #include <vm/vm_map.h>
        !            87: #include <vm/vm_kern.h>
        !            88: #include <ipc/ipc_entry.h>
        !            89: #include <ipc/ipc_space.h>
        !            90: #include <ipc/ipc_object.h>
        !            91: #include <ipc/ipc_port.h>
        !            92: #include <ipc/ipc_pset.h>
        !            93: #include <ipc/ipc_marequest.h>
        !            94: #include <ipc/ipc_notify.h>
        !            95: #include <ipc/ipc_kmsg.h>
        !            96: #include <ipc/ipc_hash.h>
        !            97: #include <ipc/ipc_init.h>
        !            98: #include <mach/machine/ndr.h>
        !            99: 
        !           100: 
        !           101: #if    MACH_OLD_VM_COPY
        !           102: task_t ipc_soft_task;
        !           103: vm_map_t ipc_soft_map;
        !           104: #endif
        !           105: vm_map_t ipc_kernel_map;
        !           106: vm_size_t ipc_kernel_map_size = 1024 * 1024;
        !           107: 
        !           108: vm_map_t ipc_kernel_copy_map;
        !           109: #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
        !           110: vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
        !           111: 
        !           112: int ipc_space_max = SPACE_MAX;
        !           113: int ipc_tree_entry_max = ITE_MAX;
        !           114: int ipc_port_max = PORT_MAX;
        !           115: int ipc_pset_max = SET_MAX;
        !           116: 
        !           117: extern void mig_init(void);
        !           118: 
        !           119: /*
        !           120:  *     Routine:        ipc_bootstrap
        !           121:  *     Purpose:
        !           122:  *             Initialization needed before the kernel task
        !           123:  *             can be created.
        !           124:  */
        !           125: 
        !           126: void
        !           127: ipc_bootstrap(void)
        !           128: {
        !           129:        kern_return_t kr;
        !           130: 
        !           131:        ipc_port_multiple_lock_init();
        !           132: 
        !           133:        ipc_port_timestamp_lock_init();
        !           134:        ipc_port_timestamp_data = 0;
        !           135: 
        !           136:        /* all IPC zones should be exhaustible */
        !           137: 
        !           138:        ipc_space_zone = zinit(sizeof(struct ipc_space),
        !           139:                               ipc_space_max * sizeof(struct ipc_space),
        !           140:                               sizeof(struct ipc_space),
        !           141:                               FALSE, "ipc spaces");
        !           142:        /* make it exhaustible */
        !           143:        zchange(ipc_space_zone, FALSE, FALSE, TRUE, FALSE);
        !           144: 
        !           145:        ipc_tree_entry_zone =
        !           146:                zinit(sizeof(struct ipc_tree_entry),
        !           147:                        ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
        !           148:                        sizeof(struct ipc_tree_entry),
        !           149:                        FALSE, "ipc tree entries");
        !           150:        /* make it exhaustible */
        !           151:        zchange(ipc_tree_entry_zone, FALSE, FALSE, TRUE, FALSE);
        !           152: 
        !           153:        ipc_object_zones[IOT_PORT] =
        !           154:                zinit(sizeof(struct ipc_port),
        !           155:                      ipc_port_max * sizeof(struct ipc_port),
        !           156:                      sizeof(struct ipc_port),
        !           157:                      FALSE, "ipc ports");
        !           158:        /* make it exhaustible */
        !           159:        zchange(ipc_object_zones[IOT_PORT], FALSE, FALSE, TRUE, FALSE);
        !           160: 
        !           161:        ipc_object_zones[IOT_PORT_SET] =
        !           162:                zinit(sizeof(struct ipc_pset),
        !           163:                      ipc_pset_max * sizeof(struct ipc_pset),
        !           164:                      sizeof(struct ipc_pset),
        !           165:                      FALSE, "ipc port sets");
        !           166:        /* make it exhaustible */
        !           167:        zchange(ipc_object_zones[IOT_PORT_SET], FALSE, FALSE, TRUE, FALSE);
        !           168: 
        !           169:        /* create special spaces */
        !           170: 
        !           171:        kr = ipc_space_create_special(&ipc_space_kernel);
        !           172:        assert(kr == KERN_SUCCESS);
        !           173: 
        !           174:        kr = ipc_space_create_special(&ipc_space_reply);
        !           175:        assert(kr == KERN_SUCCESS);
        !           176: 
        !           177:        /* initialize modules with hidden data structures */
        !           178: 
        !           179:        ipc_table_init();
        !           180:        ipc_notify_init();
        !           181:        ipc_hash_init();
        !           182:        ipc_marequest_init();
        !           183: }
        !           184: 
        !           185: /*
        !           186:  *     Routine:        ipc_init
        !           187:  *     Purpose:
        !           188:  *             Final initialization of the IPC system.
        !           189:  */
        !           190: 
        !           191: void
        !           192: ipc_init(void)
        !           193: {
        !           194:        vm_offset_t min, max;
        !           195: 
        !           196: #if    MACH_OLD_VM_COPY
        !           197:        if (task_create(TASK_NULL, FALSE, &ipc_soft_task) != KERN_SUCCESS)
        !           198:                panic("ipc_init");
        !           199:        
        !           200:        ipc_soft_map = ipc_soft_task->map;
        !           201:        {
        !           202:                vm_offset_t     x = 0;
        !           203: 
        !           204:                /*
        !           205:                 * XXX
        !           206:                 * Allocate page zero here
        !           207:                 * so that it can't be used as
        !           208:                 * the address of a valid copy
        !           209:                 * region.
        !           210:                 * XXX
        !           211:                 */
        !           212:                (void) vm_allocate(ipc_soft_map, &x, PAGE_SIZE, FALSE);
        !           213:        }
        !           214: #endif /* MACH_OLD_VM_COPY */
        !           215: 
        !           216:        ipc_kernel_map = kmem_suballoc(kernel_map, &min, &max,
        !           217:                                       ipc_kernel_map_size, TRUE);
        !           218: 
        !           219:        ipc_kernel_copy_map = kmem_suballoc(kernel_map, &min, &max,
        !           220:                                       ipc_kernel_copy_map_size, TRUE);
        !           221: 
        !           222:        ipc_host_init();
        !           223: }

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