1 /* $NetBSD: parse_args.c,v 1.7 2000/09/24 12:32:36 jdolecek 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed under OpenBSD by 17 * Theo de Raadt for Willowglen Singapore. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/param.h> 36 #include <sys/reboot.h> 37 #include <sys/disklabel.h> 38 #include <machine/prom.h> 39 #include <sys/boot_flag.h> 40 41 #include "stand.h" 42 #include "libsa.h" 43 44 #define KERNEL_NAME "netbsd" 45 46 void 47 parse_args(filep, flagp, partp) 48 char **filep; 49 int *flagp; 50 int *partp; 51 { 52 char *name = KERNEL_NAME, *ptr; 53 int howto = 0, part = 0; 54 char c; 55 56 if (bugargs.arg_start != bugargs.arg_end) { 57 ptr = bugargs.arg_start; 58 while ((c = *ptr)) { 59 while (c == ' ') 60 c = *++ptr; 61 if (c == '\0') 62 return; 63 if (c != '-') { 64 if (ptr[1] == ':') { 65 part = (int) (*ptr - 'A'); 66 if (part >= MAXPARTITIONS) 67 part -= 0x20; 68 if (part < 0 || part >= MAXPARTITIONS) 69 part = 0; 70 if (ptr[2] == ' ' || ptr[2] == '\0') { 71 ptr += 2; 72 continue; 73 } 74 name = &(ptr[2]); 75 } else 76 name = ptr; 77 while ((c = *++ptr) && c != ' ') 78 ; 79 if (c) 80 *ptr++ = 0; 81 continue; 82 } 83 while ((c = *++ptr) && c != ' ') 84 BOOT_FLAG(c, howto); 85 } 86 } 87 *flagp = howto; 88 *filep = name; 89 *partp = part; 90 } 91