minix/usr.sbin/installboot/installboot.c

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2012-01-10 09:46:52 +01:00
/* $NetBSD: installboot.c,v 1.36 2011/11/03 20:46:41 martin Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn of Wasabi Systems.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(__lint)
__RCSID("$NetBSD: installboot.c,v 1.36 2011/11/03 20:46:41 martin Exp $");
#endif /* !__lint */
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <assert.h>
#include <err.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include "installboot.h"
static void getmachine(ib_params *, const char *, const char *);
static void getfstype(ib_params *, const char *, const char *);
static void parseoptions(ib_params *, const char *);
__dead static void usage(void);
static void options_usage(void);
static void machine_usage(void);
static void fstype_usage(void);
static ib_params installboot_params;
#define OFFSET(field) offsetof(ib_params, field)
const struct option {
const char *name; /* Name of option */
ib_flags flag; /* Corresponding IB_xxx flag */
enum { /* Type of option value... */
OPT_BOOL, /* no value */
OPT_INT, /* numeric value */
OPT_WORD, /* space/tab/, terminated */
OPT_STRING /* null terminated */
} type;
int offset; /* of field in ib_params */
} options[] = {
{ "alphasum", IB_ALPHASUM, OPT_BOOL, 0 },
{ "append", IB_APPEND, OPT_BOOL, 0 },
{ "command", IB_COMMAND, OPT_STRING, OFFSET(command) },
{ "console", IB_CONSOLE, OPT_WORD, OFFSET(console) },
{ "ioaddr", IB_CONSADDR, OPT_INT, OFFSET(consaddr) },
{ "keymap", IB_KEYMAP, OPT_WORD, OFFSET(keymap) },
{ "password", IB_PASSWORD, OPT_WORD, OFFSET(password) },
{ "resetvideo", IB_RESETVIDEO, OPT_BOOL, 0 },
{ "speed", IB_CONSPEED, OPT_INT, OFFSET(conspeed) },
{ "sunsum", IB_SUNSUM, OPT_BOOL, 0 },
{ "timeout", IB_TIMEOUT, OPT_INT, OFFSET(timeout) },
{ "modules", IB_MODULES, OPT_BOOL, 0 },
{ "bootconf", IB_BOOTCONF, OPT_BOOL, 0 },
{ .name = NULL },
};
#undef OFFSET
#define OPTION(params, type, opt) (*(type *)((char *)(params) + (opt)->offset))
#define DFL_SECSIZE 512 /* Don't use DEV_BSIZE. It's host's value. */
int
main(int argc, char *argv[])
{
struct utsname utsname;
ib_params *params;
unsigned long lval;
int ch, rv, mode;
char *p;
const char *op;
ib_flags unsupported_flags;
/* XXX Temp stuff for MINIX until fdisk is ported */
if ((4 <= argc && argc <= 6) && isoption(argv[1], "-master")) {
install_master(argv[2], argv[3], argv + 4);
exit(0);
}
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setprogname(argv[0]);
params = &installboot_params;
memset(params, 0, sizeof(*params));
params->fsfd = -1;
params->s1fd = -1;
if ((p = getenv("MACHINE")) != NULL)
getmachine(params, p, "$MACHINE");
while ((ch = getopt(argc, argv, "b:B:cefm:no:t:v")) != -1) {
switch (ch) {
case 'b':
case 'B':
if (*optarg == '\0')
goto badblock;
lval = strtoul(optarg, &p, 0);
if (lval > UINT32_MAX || *p != '\0') {
badblock:
errx(1, "Invalid block number `%s'", optarg);
}
if (ch == 'b') {
params->s1start = (uint32_t)lval;
params->flags |= IB_STAGE1START;
} else {
params->s2start = (uint32_t)lval;
params->flags |= IB_STAGE2START;
}
break;
case 'c':
params->flags |= IB_CLEAR;
break;
case 'e':
params->flags |= IB_EDIT;
break;
case 'f':
params->flags |= IB_FORCE;
break;
case 'm':
getmachine(params, optarg, "-m");
break;
case 'n':
params->flags |= IB_NOWRITE;
break;
case 'o':
parseoptions(params, optarg);
break;
case 't':
getfstype(params, optarg, "-t");
break;
case 'v':
params->flags |= IB_VERBOSE;
break;
case '?':
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (params->flags & IB_CLEAR && params->flags & IB_EDIT)
usage();
if (argc < 1 || argc + 2 * !!(params->flags & (IB_CLEAR | IB_EDIT)) > 3)
usage();
/* set missing defaults */
if (params->machine == NULL) {
if (uname(&utsname) == -1)
err(1, "Determine uname");
#if !defined(__minix)
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getmachine(params, utsname.machine, "uname()");
#else
getmachine(params, utsname.arch, "uname()");
#endif /* !defined(__minix) */
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}
/* Check that options are supported by this system */
unsupported_flags = params->flags & ~params->machine->valid_flags;
unsupported_flags &= ~(IB_VERBOSE | IB_NOWRITE | IB_CLEAR | IB_EDIT
| IB_FORCE);
if (unsupported_flags != 0) {
int ndx;
for (ndx = 0; options[ndx].name != NULL; ndx++) {
if (unsupported_flags & options[ndx].flag) {
unsupported_flags &= ~options[ndx].flag;
warnx("`-o %s' is not supported for %s",
options[ndx].name, params->machine->name);
}
}
if (unsupported_flags & IB_STAGE1START)
warnx("`-b bno' is not supported for %s",
params->machine->name);
if (unsupported_flags & IB_STAGE2START)
warnx("`-B bno' is not supported for %s",
params->machine->name);
unsupported_flags &= ~(IB_STAGE1START | IB_STAGE2START);
if (unsupported_flags != 0)
warnx("Unknown unsupported flag %#x (coding error!)",
unsupported_flags);
exit(1);
}
/* and some illegal combinations */
if (params->flags & IB_STAGE1START && params->flags & IB_APPEND) {
warnx("Can't use `-b bno' with `-o append'");
exit(1);
}
if (params->flags & IB_CLEAR &&
params->flags & (IB_STAGE1START | IB_STAGE2START | IB_APPEND)) {
warnx("Can't use `-b bno', `-B bno' or `-o append' with `-c'");
exit(1);
}
if (argc >= 3) {
params->stage2 = argv[2];
}
params->filesystem = argv[0];
if (params->flags & IB_NOWRITE) {
op = "only";
mode = O_RDONLY;
} else {
op = "write";
mode = O_RDWR;
}
if (minixfs3_is_minix_partition(params)) {
/* Old setups has just 1 sector for bootblock,
* but bootxx_minixfs is ~8Kb, so we require new setups
* to have 32 sectors before the first subpartition.
* This prevents from overwriting FS on old setups.
*/
if (!minixfs3_has_bootblock_space(params)) {
err(1, "No space for bootxx, you should have 32 sectors"
" before the first subpartition on %s",
params->filesystem);
}
}
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/* XXX should be specified via option */
params->sectorsize = DFL_SECSIZE;
if ((params->fsfd = open(params->filesystem, mode, 0600)) == -1)
err(1, "Opening file system `%s' read-%s",
params->filesystem, op);
if (fstat(params->fsfd, &params->fsstat) == -1)
err(1, "Examining file system `%s'", params->filesystem);
if (params->fstype != NULL) {
if (! params->fstype->match(params))
errx(1, "File system `%s' is not of type %s",
params->filesystem, params->fstype->name);
} else {
if (params->stage2 != NULL) {
params->fstype = &fstypes[0];
while (params->fstype->name != NULL &&
!params->fstype->match(params))
params->fstype++;
if (params->fstype->name == NULL)
errx(1, "File system `%s' is of an unknown type",
params->filesystem);
}
}
if (argc >= 2) {
if ((params->s1fd = open(argv[1], O_RDONLY, 0600)) == -1)
err(1, "Opening primary bootstrap `%s'", argv[1]);
if (fstat(params->s1fd, &params->s1stat) == -1)
err(1, "Examining primary bootstrap `%s'", argv[1]);
if (!S_ISREG(params->s1stat.st_mode))
errx(1, "`%s' must be a regular file", argv[1]);
params->stage1 = argv[1];
}
assert(params->machine != NULL);
if (params->flags & IB_VERBOSE) {
printf("File system: %s\n", params->filesystem);
if (params->fstype)
printf("File system type: %s (blocksize %u, "
"needswap %d)\n",
params->fstype->name, params->fstype->blocksize,
params->fstype->needswap);
if (!(params->flags & IB_EDIT))
printf("Primary bootstrap: %s\n",
(params->flags & IB_CLEAR) ? "(to be cleared)"
: params->stage1 ? params->stage1 : "(none)" );
if (params->stage2 != NULL)
printf("Secondary bootstrap: %s\n", params->stage2);
}
if (params->flags & IB_EDIT) {
op = "Edit";
rv = params->machine->editboot(params);
} else if (params->flags & IB_CLEAR) {
op = "Clear";
rv = params->machine->clearboot(params);
} else {
if (argc < 2)
errx(EXIT_FAILURE, "Please specify the primary "
"bootstrap file");
op = "Set";
rv = params->machine->setboot(params);
}
if (rv == 0)
errx(1, "%s bootstrap operation failed", op);
if (S_ISREG(params->fsstat.st_mode)) {
if (fsync(params->fsfd) == -1)
err(1, "Synchronising file system `%s'",
params->filesystem);
} else {
/* Sync filesystems (to clean in-memory superblock?) */
sync();
}
if (close(params->fsfd) == -1)
err(1, "Closing file system `%s'", params->filesystem);
if (argc == 2)
if (close(params->s1fd) == -1)
err(1, "Closing primary bootstrap `%s'",
params->stage1);
exit(0);
/* NOTREACHED */
}
static void
parseoptions(ib_params *params, const char *option)
{
char *cp;
const struct option *opt;
int len;
unsigned long val;
assert(params != NULL);
assert(option != NULL);
for (;; option += len) {
option += strspn(option, ", \t");
if (*option == 0)
return;
len = strcspn(option, "=,");
for (opt = options; opt->name != NULL; opt++) {
if (memcmp(option, opt->name, len) == 0
&& opt->name[len] == 0)
break;
}
if (opt->name == NULL) {
len = strcspn(option, ",");
warnx("Unknown option `-o %.*s'", len, option);
break;
}
params->flags |= opt->flag;
if (opt->type == OPT_BOOL) {
if (option[len] != '=')
continue;
warnx("Option `%s' must not have a value", opt->name);
break;
}
if (option[len] != '=') {
warnx("Option `%s' must have a value", opt->name);
break;
}
option += len + 1;
len = strcspn(option, ",");
switch (opt->type) {
case OPT_STRING:
len = strlen(option);
/* FALLTHROUGH */
case OPT_WORD:
cp = strdup(option);
if (cp == NULL)
err(1, "strdup");
cp[len] = 0;
OPTION(params, char *, opt) = cp;
continue;
case OPT_INT:
val = strtoul(option, &cp, 0);
if (cp > option + len || (*cp != 0 && *cp != ','))
break;
if (val > INT_MAX)
break;
OPTION(params, int, opt) = (int)val;
continue;
default:
errx(1, "Internal error: option `%s' has invalid type %d",
opt->name, opt->type);
}
warnx("Invalid option value `%s=%.*s'", opt->name, len, option);
break;
}
options_usage();
exit(1);
}
static void
options_usage(void)
{
int ndx;
const char *pfx;
warnx("Valid options are:");
pfx = "\t";
for (ndx = 0; options[ndx].name != 0; ndx++) {
fprintf(stderr, "%s%s", pfx, options[ndx].name);
switch (options[ndx].type) {
case OPT_INT:
fprintf(stderr, "=number");
break;
case OPT_WORD:
fprintf(stderr, "=word");
break;
case OPT_STRING:
fprintf(stderr, "=string");
break;
default:
break;
}
if ((ndx % 5) == 4)
pfx = ",\n\t";
else
pfx = ", ";
}
fprintf(stderr, "\n");
}
int
no_setboot(ib_params *params)
{
assert(params != NULL);
warnx("%s: bootstrap installation is not supported",
params->machine->name);
return (0);
}
int
no_clearboot(ib_params *params)
{
assert(params != NULL);
warnx("%s: bootstrap removal is not supported",
params->machine->name);
return (0);
}
int
no_editboot(ib_params *params)
{
assert(params != NULL);
warnx("%s: bootstrap editing is not supported",
params->machine->name);
return (0);
}
static void
getmachine(ib_params *param, const char *mach, const char *provider)
{
int i;
assert(param != NULL);
assert(mach != NULL);
assert(provider != NULL);
for (i = 0; machines[i] != NULL; i++) {
if (machines[i]->name == NULL)
continue;
if (strcmp(machines[i]->name, mach) == 0) {
param->machine = machines[i];
return;
}
}
warnx("Invalid machine `%s' from %s", mach, provider);
machine_usage();
exit(1);
}
static void
machine_usage(void)
{
const char *prefix;
int i;
int col, len;
const char *name;
int wincol=80;
#ifdef TIOCGWINSZ
struct winsize win;
if (ioctl(fileno(stderr), TIOCGWINSZ, &win) == 0 && win.ws_col > 0)
wincol = win.ws_col;
#endif
warnx("Supported machines are:");
prefix="\t";
col = 8 + 3;
for (i = 0; machines[i] != NULL; i++) {
name = machines[i]->name;
if (name == NULL)
continue;
len = strlen(name);
if (col + len > wincol) {
prefix=",\n\t";
col = -2 + 8 + 3;
}
col += fprintf(stderr, "%s%s", prefix, name);
prefix=", ";
}
fputs("\n", stderr);
}
static void
getfstype(ib_params *param, const char *fstype, const char *provider)
{
int i;
assert(param != NULL);
assert(fstype != NULL);
assert(provider != NULL);
for (i = 0; fstypes[i].name != NULL; i++) {
if (strcmp(fstypes[i].name, fstype) == 0) {
param->fstype = &fstypes[i];
return;
}
}
warnx("Invalid file system type `%s' from %s", fstype, provider);
fstype_usage();
exit(1);
}
static void
fstype_usage(void)
{
#ifndef NO_STAGE2
const char *prefix;
int i;
warnx("Supported file system types are:");
#define FSTYPES_PER_LINE 9
prefix="\t";
for (i = 0; fstypes[i].name != NULL; i++) {
if (i && (i % FSTYPES_PER_LINE) == 0)
prefix=",\n\t";
fprintf(stderr, "%s%s", prefix, fstypes[i].name);
prefix=", ";
}
fputs("\n", stderr);
#endif
}
static void
usage(void)
{
const char *prog;
prog = getprogname();
fprintf(stderr,
"usage: %s [-fnv] [-B s2bno] [-b s1bno] [-m machine] [-o options]\n"
"\t\t [-t fstype] filesystem primary [secondary]\n"
"usage: %s -c [-fnv] [-m machine] [-o options] [-t fstype] filesystem\n"
"usage: %s -e [-fnv] [-m machine] [-o options] bootstrap\n",
prog, prog, prog);
machine_usage();
fstype_usage();
options_usage();
exit(1);
}