1 /* $NetBSD: parse_args.c,v 1.8 2003/12/10 12:06:25 agc 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 <sys/disklabel.h> 32 #include <machine/prom.h> 33 #include <sys/boot_flag.h> 34 35 #include "stand.h" 36 #include "libsa.h" 37 38 #define KERNEL_NAME "netbsd" 39 40 void 41 parse_args(filep, flagp, partp) 42 char **filep; 43 int *flagp; 44 int *partp; 45 { 46 char *name = KERNEL_NAME, *ptr; 47 int howto = 0, part = 0; 48 char c; 49 50 if (bugargs.arg_start != bugargs.arg_end) { 51 ptr = bugargs.arg_start; 52 while ((c = *ptr)) { 53 while (c == ' ') 54 c = *++ptr; 55 if (c == '\0') 56 return; 57 if (c != '-') { 58 if (ptr[1] == ':') { 59 part = (int) (*ptr - 'A'); 60 if (part >= MAXPARTITIONS) 61 part -= 0x20; 62 if (part < 0 || part >= MAXPARTITIONS) 63 part = 0; 64 if (ptr[2] == ' ' || ptr[2] == '\0') { 65 ptr += 2; 66 continue; 67 } 68 name = &(ptr[2]); 69 } else 70 name = ptr; 71 while ((c = *++ptr) && c != ' ') 72 ; 73 if (c) 74 *ptr++ = 0; 75 continue; 76 } 77 while ((c = *++ptr) && c != ' ') 78 BOOT_FLAG(c, howto); 79 } 80 } 81 *flagp = howto; 82 *filep = name; 83 *partp = part; 84 } 85