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Annotation of sys/arch/mvme88k/stand/libsa/parse_args.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: parse_args.c,v 1.5 2006/05/16 22:52:09 miod Exp $ */
        !             2:
        !             3: /*-
        !             4:  * Copyright (c) 1995 Theo de Raadt
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
        !            16:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            18:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
        !            19:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            20:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            21:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            22:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            23:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            24:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            25:  * SUCH DAMAGE.
        !            26:  *
        !            27:  */
        !            28:
        !            29: #include <sys/param.h>
        !            30: #include <sys/reboot.h>
        !            31: #include <machine/prom.h>
        !            32: #include <a.out.h>
        !            33:
        !            34: #include "stand.h"
        !            35: #include "libsa.h"
        !            36:
        !            37: #define KERNEL_NAME "bsd"
        !            38:
        !            39: struct flags {
        !            40:        char c;
        !            41:        short bit;
        !            42: } bf[] = {
        !            43:        { 'a', RB_ASKNAME }, /* ask root */
        !            44:        { 'b', RB_HALT },
        !            45:        { 'c', RB_CONFIG },
        !            46:        { 'd', RB_KDB },
        !            47:        { 'm', RB_MINIROOT },
        !            48:        { 'r', RB_DFLTROOT },
        !            49:        { 's', RB_SINGLE },
        !            50:        { 'y', RB_NOSYM },
        !            51: };
        !            52:
        !            53: int
        !            54: parse_args(filep, flagp)
        !            55:        char **filep;
        !            56:        int *flagp;
        !            57: {
        !            58:        char *name = KERNEL_NAME, *ptr;
        !            59:        int i, howto = 0;
        !            60:        char c;
        !            61:
        !            62:        if (bugargs.arg_start != bugargs.arg_end) {
        !            63:                ptr = bugargs.arg_start;
        !            64:                while ((c = *ptr) != '\0') {
        !            65:                        while (c == ' ')
        !            66:                                c = *++ptr;
        !            67:                        if (c == '\0')
        !            68:                                return (0);
        !            69:                        if (c != '-') {
        !            70:                                name = ptr;
        !            71:                                while ((c = *++ptr) && c != ' ')
        !            72:                                        ;
        !            73:                                if (c)
        !            74:                                        *ptr++ = 0;
        !            75:                                continue;
        !            76:                        }
        !            77:                        while ((c = *++ptr) && c != ' ') {
        !            78:                                if (c == 'q')
        !            79:                                        return (1);
        !            80:                                for (i = 0; i < sizeof(bf)/sizeof(bf[0]); i++)
        !            81:                                        if (bf[i].c == c) {
        !            82:                                                howto |= bf[i].bit;
        !            83:                                        }
        !            84:                        }
        !            85:                }
        !            86:        }
        !            87:        *flagp = howto;
        !            88:        *filep = name;
        !            89:        return (0);
        !            90: }