414 lines
8.6 KiB
C
414 lines
8.6 KiB
C
/* $NetBSD: main.c,v 1.5 1997/07/29 16:01:45 christos Exp $ */
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/*
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* Copyright (c) 1996, 1997
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* Matthias Drochner. All rights reserved.
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* Copyright (c) 1996, 1997
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* Perry E. Metzger. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgements:
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* This product includes software developed for the NetBSD Project
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* by Matthias Drochner.
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* This product includes software developed for the NetBSD Project
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* by Perry E. Metzger.
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* 4. The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/reboot.h>
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#include <lib/libkern/libkern.h>
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#include <lib/libsa/stand.h>
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#include <libi386.h>
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extern void ls __P((char *));
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extern int getopt __P((int, char **, const char *));
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int errno;
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static char *consdev;
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extern char bootprog_name[], bootprog_rev[], bootprog_date[],
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bootprog_maker[];
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#define MAXDEVNAME 16
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static char *current_fsmode;
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static char *default_devname;
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static int default_unit, default_partition;
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static char *default_filename;
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int
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parsebootfile(fname, fsmode, devname, unit, partition, file)
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const char *fname;
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char **fsmode;
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char **devname;/* out */
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unsigned int *unit, *partition; /* out */
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const char **file; /* out */
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{
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const char *col, *help;
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*fsmode = current_fsmode;
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*devname = default_devname;
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*unit = default_unit;
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*partition = default_partition;
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*file = default_filename;
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if (!fname)
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return (0);
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if ((col = strchr(fname, ':'))) { /* device given */
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static char savedevname[MAXDEVNAME + 1];
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int devlen;
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unsigned int u = 0, p = 0;
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int i = 0;
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devlen = col - fname;
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if (devlen > MAXDEVNAME)
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return (EINVAL);
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#define isvalidname(c) ((c) >= 'a' && (c) <= 'z')
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if (!isvalidname(fname[i]))
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return (EINVAL);
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do {
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savedevname[i] = fname[i];
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i++;
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} while (isvalidname(fname[i]));
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savedevname[i] = '\0';
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#define isnum(c) ((c) >= '0' && (c) <= '9')
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if (i < devlen) {
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if (!isnum(fname[i]))
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return (EUNIT);
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do {
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u *= 10;
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u += fname[i++] - '0';
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} while (isnum(fname[i]));
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}
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#define isvalidpart(c) ((c) >= 'a' && (c) <= 'z')
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if (i < devlen) {
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if (!isvalidpart(fname[i]))
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return (EPART);
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p = fname[i++] - 'a';
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}
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if (i != devlen)
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return (ENXIO);
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*devname = savedevname;
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*unit = u;
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*partition = p;
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help = col + 1;
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} else
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help = fname;
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if (*help)
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*file = help;
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return (0);
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}
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static void
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print_bootsel(filename)
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char *filename;
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{
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char *fsname;
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char *devname;
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int unit, partition;
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const char *file;
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if (!parsebootfile(filename, &fsname, &devname, &unit,
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&partition, &file)) {
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if (!strcmp(fsname, "dos"))
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printf("booting %s\n", file);
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else if (!strcmp(fsname, "ufs"))
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printf("booting %s%d%c:%s\n", devname, unit,
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'a' + partition, file);
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}
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}
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static void
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bootit(filename, howto, tell)
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const char *filename;
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int howto, tell;
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{
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if (tell)
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print_bootsel(filename);
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if (exec_netbsd(filename, 0, howto, 0, consdev) < 0)
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printf("boot: %s\n", strerror(errno));
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else
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printf("boot returned\n");
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}
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static void
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helpme()
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{
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printf("commands are:\n"
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"boot [xdNx:][filename] [-adrs]\n"
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" (ex. \"sd0a:netbsd.old -s\"\n"
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"ls [path]\n"
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"mode ufs|dos\n"
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"help|?\n"
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"quit\n");
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}
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/*
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* chops the head from the arguments and returns the arguments if any,
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* or possibly an empty string.
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*/
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static char *
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gettrailer(arg)
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char *arg;
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{
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char *options;
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if ((options = strchr(arg, ' ')) == NULL)
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options = "";
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else
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*options++ = '\0';
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/* trim leading blanks */
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while (*options && *options == ' ')
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options++;
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return (options);
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}
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static int
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parseopts(opts, howto)
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char *opts;
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int *howto;
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{
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int tmpopt = 0;
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opts++; /* skip - */
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while (*opts && *opts != ' ') {
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tmpopt |= netbsd_opt(*opts);
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if (tmpopt == -1) {
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printf("-%c: unknown flag\n", *opts);
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helpme();
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return (0);
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}
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opts++;
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}
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*howto = tmpopt;
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return (1);
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}
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static int
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parseboot(arg, filename, howto)
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char *arg;
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char **filename;
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int *howto;
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{
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char *opts = NULL;
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*filename = 0;
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*howto = 0;
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/* if there were no arguments */
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if (!*arg)
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return (1);
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/* format is... */
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/* [[xxNx:]filename] [-adrs] */
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/* check for just args */
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if (arg[0] == '-') {
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opts = arg;
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} else { /* at least a file name */
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*filename = arg;
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opts = gettrailer(arg);
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if (!*opts)
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opts = NULL;
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else if (*opts != '-') {
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printf("invalid arguments\n");
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helpme();
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return (0);
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}
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}
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/* at this point, we have dealt with filenames. */
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/* now, deal with options */
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if (opts) {
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if (!parseopts(opts, howto))
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return (0);
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}
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return (1);
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}
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static void
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parsemode(arg, mode)
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char *arg;
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char **mode;
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{
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if (!strcmp("dos", arg))
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*mode = "dos";
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else if (!strcmp("ufs", arg))
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*mode = "ufs";
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else
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printf("invalid mode\n");
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}
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static void
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docommand(arg)
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char *arg;
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{
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char *options;
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options = gettrailer(arg);
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if ((strcmp("help", arg) == 0) ||
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(strcmp("?", arg) == 0)) {
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helpme();
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return;
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}
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if (strcmp("ls", arg) == 0) {
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char *help = default_filename;
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if (strcmp(current_fsmode, "ufs")) {
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printf("UFS only\n");
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return;
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}
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default_filename = "/";
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ls(options);
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default_filename = help;
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return;
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}
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if (strcmp("quit", arg) == 0) {
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printf("Exiting... goodbye...\n");
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exit(0);
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}
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if (strcmp("boot", arg) == 0) {
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char *filename;
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int howto;
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if (parseboot(options, &filename, &howto))
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bootit(filename, howto, 1);
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return;
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}
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if (strcmp("mode", arg) == 0) {
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parsemode(options, ¤t_fsmode);
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return;
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}
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printf("unknown command\n");
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helpme();
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}
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void
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bootmenu()
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{
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printf("\ntype \"?\" or \"help\" for help.\n");
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for (;;) {
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char input[80];
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input[0] = '\0';
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printf("> ");
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gets(input);
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docommand(input);
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}
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}
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static void
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print_banner(void)
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{
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int extmem = getextmem();
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char *s = "";
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#ifdef XMS
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if (extmem == 0) {
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if ((extmem = checkxms()) != 0)
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s = "(xms) ";
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}
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#endif
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printf("\n");
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printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
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printf(">> (%s, %s)\n", bootprog_maker, bootprog_date);
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printf(">> Memory: %d/%d %sk\n", getbasemem(), extmem, s);
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}
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void
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usage()
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{
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printf("dosboot [-u] [-c <commands>] [-i] [filename [-bootopts]]\n");
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}
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int ch;
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int interactive = 0;
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int howto;
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extern char *optarg;
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extern int optind;
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consdev = initio(CONSDEV_PC);
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gateA20();
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print_banner();
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current_fsmode = "dos";
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default_devname = "hd";
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default_unit = 0;
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default_partition = 0;
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default_filename = "netbsd";
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while ((ch = getopt(argc, argv, "c:iu")) != -1) {
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switch (ch) {
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case 'c':
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docommand(optarg);
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return (1);
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break;
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case 'i':
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interactive = 1;
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break;
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case 'u':
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current_fsmode = "ufs";
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break;
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default:
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usage();
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return (1);
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}
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}
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if (interactive)
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bootmenu();
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argc -= optind;
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argv += optind;
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if (argc > 2) {
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usage();
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return (1);
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}
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howto = 0;
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if (argc > 1 && !parseopts(argv[1], &howto))
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return (1);
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bootit((argc > 0 ? argv[0] : "netbsd"), howto, 1);
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return (1);
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}
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