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Annotation of driverkit/libDriver/User/getDevPort.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: /*     Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. 
        !            25:  * 
        !            26:  * getDevPort.c - Get device ports from Config.
        !            27:  *
        !            28:  * HISTORY
        !            29:  * 25-Jun-92    Doug Mitchell at NeXT
        !            30:  *      Created. 
        !            31:  */
        !            32:  
        !            33: #import <driverkit/driverServer.h>
        !            34: #import <driverkit/userConfigServer.h>
        !            35: #import <driverkit/generalFuncs.h>
        !            36: #import <mach/mach_error.h>
        !            37: #import <bsd/sys/types.h>
        !            38: #import <mach/mach.h>
        !            39: #import <servers/bootstrap.h>
        !            40: #import <servers/netname.h>
        !            41: #import <bsd/libc.h>
        !            42: 
        !            43: #define        DPRINT_DEBUG    0
        !            44: #if    DPRINT_DEBUG
        !            45: #define        dprintf(x,a,b,c,d,e)  IOLog(x,a,b,c,d,e)
        !            46: #else  DPRINT_DEBUG
        !            47: #define        dprintf(x,a,b,c,d,e)
        !            48: #endif DPRINT_DEBUG
        !            49: 
        !            50: #define        LOG_SERVICE_NAMES       0
        !            51: 
        !            52: /*
        !            53:  * look up all of a driver's devicePorts. returns # of ports found in
        !            54:  * *numDevicePorts.
        !            55:  * Returns IO_CNF_SUCCESS normally (even if no ports found); 
        !            56:  * IO_CNF_BOOTSTRAP on other error.
        !            57:  */
        !            58: IOConfigReturn IOGetDevicePorts(int maxDevices,
        !            59:        const char *driverName,         // for error logging only 
        !            60:        port_t *devicePorts,            // returned
        !            61:        int *numDevicePorts,            // returned
        !            62:        port_t *driverSigPort)          // returned
        !            63: {
        !            64:        int             i;
        !            65:        name_array_t    service_names;
        !            66:        unsigned int    service_cnt;
        !            67:        name_array_t    server_names;
        !            68:        unsigned int    server_cnt;
        !            69:        bool_array_t    service_active;
        !            70:        unsigned int    service_active_cnt;
        !            71:        kern_return_t   krtn;
        !            72:        int             port_index = 0;
        !            73:        
        !            74:        *numDevicePorts = 0;
        !            75:        
        !            76:        /*
        !            77:         * Get some basic communication ports.
        !            78:         */
        !            79:        krtn = bootstrap_look_up(bootstrap_port, 
        !            80:                SIG_PORT_NAME,
        !            81:                driverSigPort);
        !            82:        if(krtn) {
        !            83:                IOLog("%s: can't find %s: %s\n", driverName,
        !            84:                        SIG_PORT_NAME, mach_error_string(krtn));
        !            85:                return IO_CNF_BOOTSTRAP;
        !            86:        }
        !            87:         
        !            88:        /*
        !            89:         * Look for our device ports, provided to us by Config.
        !            90:         */
        !            91:        krtn = bootstrap_info(bootstrap_port, 
        !            92:                &service_names, 
        !            93:                &service_cnt,
        !            94:                &server_names, 
        !            95:                &server_cnt, 
        !            96:                &service_active, 
        !            97:                &service_active_cnt);
        !            98:        if (krtn != BOOTSTRAP_SUCCESS) {
        !            99:                IOLog("%s: bootstrap_info: %s", driverName,
        !           100:                        mach_error_string(krtn));
        !           101:                return IO_CNF_BOOTSTRAP;
        !           102:        }
        !           103: 
        !           104:        /*
        !           105:         * Search for dev_port_XXX. Later - versions and dev_index via
        !           106:         * dev_port_to_type().
        !           107:         */
        !           108:        dprintf("%s: service_cnt %d\n", driverName, service_cnt, 3,4,5);
        !           109:        for (i = 0; i < service_cnt; i++) {
        !           110: #if    LOG_SERVICE_NAMES
        !           111:                printf("%s: service_name %s\n", driverName, service_names[i],
        !           112:                        4,5);
        !           113: #endif LOG_SERVICE_NAMES
        !           114:                if(strncmp(service_names[i], 
        !           115:                    "dev_port_", strlen("dev_port_")) == 0) {
        !           116:                        dprintf("%s: port %s found\n", 
        !           117:                                driverName, service_names[i], 3,4,5);
        !           118:                        
        !           119:                        /*
        !           120:                         * Get the dev_port. 
        !           121:                         */
        !           122:                        krtn = bootstrap_look_up(bootstrap_port,
        !           123:                                service_names[i],
        !           124:                                &devicePorts[port_index]);
        !           125:                        if(krtn) {
        !           126:                                IOLog("%s: bootstrap_look_up: %s",
        !           127:                                        driverName, mach_error_string(krtn));
        !           128:                                return IO_CNF_BOOTSTRAP;
        !           129:                        }
        !           130:                        else {
        !           131:                                if(++port_index > maxDevices) {
        !           132:                                        IOLog("%s: num_devices exceeded\n",
        !           133:                                                driverName);
        !           134:                                        *numDevicePorts = port_index;
        !           135:                                        return IO_CNF_SUCCESS;
        !           136:                                }
        !           137:                        }
        !           138:                }       /* device port found */
        !           139:        }               /* for each port in bootstrap server */
        !           140:        
        !           141:        dprintf("%s: %d devPorts found\n", driverName, port_index, 3,4,5);
        !           142:        *numDevicePorts = port_index;
        !           143:        return IO_CNF_SUCCESS;
        !           144: }
        !           145: 

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