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Annotation of sys/arch/arm/arm/bootconfig.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: bootconfig.c,v 1.1 2004/02/01 05:09:48 drahn Exp $    */
        !             2: /*     $NetBSD: bootconfig.c,v 1.2 2002/03/10 19:56:39 lukem Exp $     */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994-1998 Mark Brinicombe.
        !             6:  * Copyright (c) 1994 Brini.
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software written for Brini by Mark Brinicombe
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. All advertising materials mentioning features or use of this software
        !            20:  *    must display the following acknowledgement:
        !            21:  *     This product includes software developed by Mark Brinicombe
        !            22:  *     for the NetBSD Project.
        !            23:  * 4. The name of the company nor the name of the author may be used to
        !            24:  *    endorse or promote products derived from this software without specific
        !            25:  *    prior written permission.
        !            26:  *
        !            27:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
        !            28:  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
        !            29:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            30:  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
        !            31:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            32:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            33:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            37:  * SUCH DAMAGE.
        !            38:  */
        !            39:
        !            40: #include <sys/param.h>
        !            41:
        !            42: #include <sys/systm.h>
        !            43:
        !            44: #include <machine/bootconfig.h>
        !            45:
        !            46: #include "rd.h"
        !            47:
        !            48: /*
        !            49:  * Function to identify and process different types of boot argument
        !            50:  */
        !            51:
        !            52: int
        !            53: get_bootconf_option(opts, opt, type, result)
        !            54:        char *opts;
        !            55:        char *opt;
        !            56:        int type;
        !            57:        void *result;
        !            58: {
        !            59:        char *ptr;
        !            60:        char *optstart;
        !            61:        int not;
        !            62:
        !            63:        ptr = opts;
        !            64:
        !            65:        while (*ptr) {
        !            66:                /* Find start of option */
        !            67:                while (*ptr == ' ' || *ptr == '\t')
        !            68:                        ++ptr;
        !            69:
        !            70:                if (*ptr == 0)
        !            71:                        break;
        !            72:
        !            73:                not = 0;
        !            74:
        !            75:                /* Is it a negate option */
        !            76:                if ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN && *ptr == '!') {
        !            77:                        not = 1;
        !            78:                        ++ptr;
        !            79:                }
        !            80:
        !            81:                /* Find the end of option */
        !            82:                optstart = ptr;
        !            83:                while (*ptr != 0 && *ptr != ' ' && *ptr != '\t' && *ptr != '=')
        !            84:                        ++ptr;
        !            85:
        !            86:                if ((*ptr == '=')
        !            87:                    || (*ptr != '=' && ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN))) {
        !            88:                        /* compare the option */
        !            89:                        if (strncmp(optstart, opt, (ptr - optstart)) == 0) {
        !            90:                                /* found */
        !            91:
        !            92:                                if (*ptr == '=')
        !            93:                                        ++ptr;
        !            94:
        !            95: #if 0
        !            96: /* BELCH */
        !            97:                                switch(type & BOOTOPT_TYPE_MASK) {
        !            98:                                case BOOTOPT_TYPE_BOOLEAN :
        !            99:                                        if (*(ptr - 1) == '=')
        !           100:                                                *((int *)result) = ((u_int)strtoul(ptr, NULL, 10) != 0);
        !           101:                                        else
        !           102:                                                *((int *)result) = !not;
        !           103:                                        break;
        !           104:                                case BOOTOPT_TYPE_STRING :
        !           105:                                        *((char **)result) = ptr;
        !           106:                                        break;
        !           107:                                case BOOTOPT_TYPE_INT :
        !           108:                                        *((int *)result) = (u_int)strtoul(ptr, NULL, 10);
        !           109:                                        break;
        !           110:                                case BOOTOPT_TYPE_BININT :
        !           111:                                        *((int *)result) = (u_int)strtoul(ptr, NULL, 2);
        !           112:                                        break;
        !           113:                                case BOOTOPT_TYPE_HEXINT :
        !           114:                                        *((int *)result) = (u_int)strtoul(ptr, NULL, 16);
        !           115:                                        break;
        !           116:                                default:
        !           117:                                        return(0);
        !           118:                                }
        !           119: #endif
        !           120:                                return(1);
        !           121:                        }
        !           122:                }
        !           123:                /* skip to next option */
        !           124:                while (*ptr != ' ' && *ptr != '\t' && *ptr != 0)
        !           125:                        ++ptr;
        !           126:        }
        !           127:        return(0);
        !           128: }