minix/boot/installboot.c
Ben Gras daca9de450 Fix to make making a bootable cd possible again.
ow that the image has grown beyond the 1.44M that fits on a floppy.
(previously, the floppy emulation mode was used for cd's.)

the boot cd now uses 'no emulation mode,' where an image is provided on
the cd that is loaded and executed directly. this is the boot monitor.

in order to make this work (the entry point is the same as where the
image is loaded, and the boot monitor needs its a.out header too) and
keep compatability with the same code being used for regular booting, i
prepended 16 bytes that jumps over its header so execution can start
there.

to be able to read the CD (mostly in order to read the boot image),
boot has to use the already present 'extended read' call, but address
the CD using 2k sectors.
2010-01-18 14:10:04 +00:00

834 lines
21 KiB
C

/* installboot 3.0 - Make a device bootable Author: Kees J. Bot
* 21 Dec 1991
*
* Either make a device bootable or make an image from kernel, mm, fs, etc.
*/
#define nil 0
#define _POSIX_SOURCE 1
#define _MINIX 1
#include <stdio.h>
#include <stddef.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <dirent.h>
#include <a.out.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/partition.h>
#include <minix/u64.h>
#include "rawfs.h"
#include "image.h"
#define BOOTBLOCK 0 /* Of course */
#define SECTOR_SIZE 512 /* Disk sector size. */
#define RATIO(b) ((b)/SECTOR_SIZE)
#define SIGNATURE 0xAA55 /* Boot block signature. */
#define BOOT_MAX 64 /* Absolute maximum size of secondary boot */
#define SIGPOS 510 /* Where to put signature word. */
#define PARTPOS 446 /* Offset to the partition table in a master
* boot block.
*/
#define between(a, c, z) ((unsigned) ((c) - (a)) <= ((z) - (a)))
#define control(c) between('\0', (c), '\37')
#define BOOT_BLOCK_SIZE 1024
void report(char *label)
/* installboot: label: No such file or directory */
{
fprintf(stderr, "installboot: %s: %s\n", label, strerror(errno));
}
void fatal(char *label)
{
report(label);
exit(1);
}
char *basename(char *name)
/* Return the last component of name, stripping trailing slashes from name.
* Precondition: name != "/". If name is prefixed by a label, then the
* label is copied to the basename too.
*/
{
static char base[IM_NAME_MAX];
char *p, *bp= base;
if ((p= strchr(name, ':')) != nil) {
while (name <= p && bp < base + IM_NAME_MAX - 1)
*bp++ = *name++;
}
for (;;) {
if ((p= strrchr(name, '/')) == nil) { p= name; break; }
if (*++p != 0) break;
*--p= 0;
}
while (*p != 0 && bp < base + IM_NAME_MAX - 1) *bp++ = *p++;
*bp= 0;
return base;
}
void bread(FILE *f, char *name, void *buf, size_t len)
/* Read len bytes. Don't dare return without them. */
{
if (len > 0 && fread(buf, len, 1, f) != 1) {
if (ferror(f)) fatal(name);
fprintf(stderr, "installboot: Unexpected EOF on %s\n", name);
exit(1);
}
}
void bwrite(FILE *f, char *name, void *buf, size_t len)
{
if (len > 0 && fwrite(buf, len, 1, f) != 1) fatal(name);
}
long total_text= 0, total_data= 0, total_bss= 0;
int making_image= 0;
void read_header(int talk, char *proc, FILE *procf, struct image_header *ihdr)
/* Read the a.out header of a program and check it. If procf happens to be
* nil then the header is already in *image_hdr and need only be checked.
*/
{
int n, big= 0;
static int banner= 0;
struct exec *phdr= &ihdr->process;
if (procf == nil) {
/* Header already present. */
n= phdr->a_hdrlen;
} else {
memset(ihdr, 0, sizeof(*ihdr));
/* Put the basename of proc in the header. */
strncpy(ihdr->name, basename(proc), IM_NAME_MAX);
/* Read the header. */
n= fread(phdr, sizeof(char), A_MINHDR, procf);
if (ferror(procf)) fatal(proc);
}
if (n < A_MINHDR || BADMAG(*phdr)) {
fprintf(stderr, "installboot: %s is not an executable\n", proc);
exit(1);
}
/* Get the rest of the exec header. */
if (procf != nil) {
bread(procf, proc, ((char *) phdr) + A_MINHDR,
phdr->a_hdrlen - A_MINHDR);
}
if (talk && !banner) {
printf(" text data bss size\n");
banner= 1;
}
if (talk) {
printf(" %8ld %8ld %8ld %9ld %s\n",
phdr->a_text, phdr->a_data, phdr->a_bss,
phdr->a_text + phdr->a_data + phdr->a_bss, proc);
}
total_text+= phdr->a_text;
total_data+= phdr->a_data;
total_bss+= phdr->a_bss;
if (phdr->a_cpu == A_I8086) {
long data= phdr->a_data + phdr->a_bss;
if (!(phdr->a_flags & A_SEP)) data+= phdr->a_text;
if (phdr->a_text >= 65536) big|= 1;
if (data >= 65536) big|= 2;
}
if (big) {
fprintf(stderr,
"%s will crash, %s%s%s segment%s larger then 64K\n",
proc,
big & 1 ? "text" : "",
big == 3 ? " and " : "",
big & 2 ? "data" : "",
big == 3 ? "s are" : " is");
}
}
void padimage(char *image, FILE *imagef, int n)
/* Add n zeros to image to pad it to a sector boundary. */
{
while (n > 0) {
if (putc(0, imagef) == EOF) fatal(image);
n--;
}
}
#define align(n) (((n) + ((SECTOR_SIZE) - 1)) & ~((SECTOR_SIZE) - 1))
void copyexec(char *proc, FILE *procf, char *image, FILE *imagef, long n)
/* Copy n bytes from proc to image padded to fill a sector. */
{
int pad, c;
/* Compute number of padding bytes. */
pad= align(n) - n;
while (n > 0) {
if ((c= getc(procf)) == EOF) {
if (ferror(procf)) fatal(proc);
fprintf(stderr, "installboot: premature EOF on %s\n",
proc);
exit(1);
}
if (putc(c, imagef) == EOF) fatal(image);
n--;
}
padimage(image, imagef, pad);
}
void make_image(char *image, char **procv)
/* Collect a set of files in an image, each "segment" is nicely padded out
* to SECTOR_SIZE, so it may be read from disk into memory without trickery.
*/
{
FILE *imagef, *procf;
char *proc, *file;
int procn;
struct image_header ihdr;
struct exec phdr;
struct stat st;
making_image= 1;
if ((imagef= fopen(image, "w")) == nil) fatal(image);
for (procn= 0; (proc= *procv++) != nil; procn++) {
/* Remove the label from the file name. */
if ((file= strchr(proc, ':')) != nil) file++; else file= proc;
/* Real files please, may need to seek. */
if (stat(file, &st) < 0
|| (errno= EISDIR, !S_ISREG(st.st_mode))
|| (procf= fopen(file, "r")) == nil
) fatal(proc);
/* Read a.out header. */
read_header(1, proc, procf, &ihdr);
/* Scratch. */
phdr= ihdr.process;
/* The symbol table is always stripped off. */
ihdr.process.a_syms= 0;
ihdr.process.a_flags &= ~A_NSYM;
/* Write header padded to fill a sector */
bwrite(imagef, image, &ihdr, sizeof(ihdr));
padimage(image, imagef, SECTOR_SIZE - sizeof(ihdr));
/* A page aligned executable needs the header in text. */
if (phdr.a_flags & A_PAL) {
rewind(procf);
phdr.a_text+= phdr.a_hdrlen;
}
/* Copy text and data of proc to image. */
if (phdr.a_flags & A_SEP) {
/* Separate I&D: pad text & data separately. */
copyexec(proc, procf, image, imagef, phdr.a_text);
copyexec(proc, procf, image, imagef, phdr.a_data);
} else {
/* Common I&D: keep text and data together. */
copyexec(proc, procf, image, imagef,
phdr.a_text + phdr.a_data);
}
/* Done with proc. */
(void) fclose(procf);
}
/* Done with image. */
if (fclose(imagef) == EOF) fatal(image);
printf(" ------ ------ ------ -------\n");
printf(" %8ld %8ld %8ld %9ld total\n",
total_text, total_data, total_bss,
total_text + total_data + total_bss);
}
void extractexec(FILE *imagef, char *image, FILE *procf, char *proc,
long count, off_t *alen)
/* Copy a segment of an executable. It is padded to a sector in image. */
{
char buf[SECTOR_SIZE];
while (count > 0) {
bread(imagef, image, buf, sizeof(buf));
*alen-= sizeof(buf);
bwrite(procf, proc, buf,
count < sizeof(buf) ? (size_t) count : sizeof(buf));
count-= sizeof(buf);
}
}
void extract_image(char *image)
/* Extract the executables from an image. */
{
FILE *imagef, *procf;
off_t len;
struct stat st;
struct image_header ihdr;
struct exec phdr;
char buf[SECTOR_SIZE];
if (stat(image, &st) < 0) fatal(image);
/* Size of the image. */
len= S_ISREG(st.st_mode) ? st.st_size : -1;
if ((imagef= fopen(image, "r")) == nil) fatal(image);
while (len != 0) {
/* Extract a program, first sector is an extended header. */
bread(imagef, image, buf, sizeof(buf));
len-= sizeof(buf);
memcpy(&ihdr, buf, sizeof(ihdr));
phdr= ihdr.process;
/* Check header. */
read_header(1, ihdr.name, nil, &ihdr);
if ((procf= fopen(ihdr.name, "w")) == nil) fatal(ihdr.name);
if (phdr.a_flags & A_PAL) {
/* A page aligned process contains a header in text. */
phdr.a_text+= phdr.a_hdrlen;
} else {
bwrite(procf, ihdr.name, &ihdr.process, phdr.a_hdrlen);
}
/* Extract text and data segments. */
if (phdr.a_flags & A_SEP) {
extractexec(imagef, image, procf, ihdr.name,
phdr.a_text, &len);
extractexec(imagef, image, procf, ihdr.name,
phdr.a_data, &len);
} else {
extractexec(imagef, image, procf, ihdr.name,
phdr.a_text + phdr.a_data, &len);
}
if (fclose(procf) == EOF) fatal(ihdr.name);
}
}
int rawfd; /* File descriptor to open device. */
char *rawdev; /* Name of device. */
void readblock(off_t blk, char *buf, int block_size)
/* For rawfs, so that it can read blocks. */
{
int n;
if (lseek(rawfd, blk * block_size, SEEK_SET) < 0
|| (n= read(rawfd, buf, block_size)) < 0
) fatal(rawdev);
if (n < block_size) {
fprintf(stderr, "installboot: Unexpected EOF on %s\n", rawdev);
exit(1);
}
}
void writeblock(off_t blk, char *buf, int block_size)
/* Add a function to write blocks for local use. */
{
if (lseek(rawfd, blk * block_size, SEEK_SET) < 0
|| write(rawfd, buf, block_size) < 0
) fatal(rawdev);
}
int raw_install(char *file, off_t *start, off_t *len, int block_size)
/* Copy bootcode or an image to the boot device at the given absolute disk
* block number. This "raw" installation is used to place bootcode and
* image on a disk without a filesystem to make a simple boot disk. Useful
* in automated scripts for J. Random User.
* Note: *len == 0 when an image is read. It is set right afterwards.
*/
{
static char buf[_MAX_BLOCK_SIZE]; /* Nonvolatile block buffer. */
FILE *f;
off_t sec;
unsigned long devsize;
static int banner= 0;
struct partition entry;
/* See if the device has a maximum size. */
devsize= -1;
if (ioctl(rawfd, DIOCGETP, &entry) == 0) devsize= cv64ul(entry.size);
if ((f= fopen(file, "r")) == nil) fatal(file);
/* Copy sectors from file onto the boot device. */
sec= *start;
do {
int off= sec % RATIO(BOOT_BLOCK_SIZE);
if (fread(buf + off * SECTOR_SIZE, 1, SECTOR_SIZE, f) == 0)
break;
if (sec >= devsize) {
fprintf(stderr,
"installboot: %s can't be attached to %s\n",
file, rawdev);
return 0;
}
if (off == RATIO(BOOT_BLOCK_SIZE) - 1) writeblock(sec / RATIO(BOOT_BLOCK_SIZE), buf, BOOT_BLOCK_SIZE);
} while (++sec != *start + *len);
if (ferror(f)) fatal(file);
(void) fclose(f);
/* Write a partial block, this may be the last image. */
if (sec % RATIO(BOOT_BLOCK_SIZE) != 0) writeblock(sec / RATIO(BOOT_BLOCK_SIZE), buf, BOOT_BLOCK_SIZE);
if (!banner) {
printf(" sector length\n");
banner= 1;
}
*len= sec - *start;
printf("%8ld%8ld %s\n", *start, *len, file);
*start= sec;
return 1;
}
enum howto { FS, BOOT };
void make_bootable(enum howto how, char *device, char *bootblock,
char *bootcode, char **imagev)
/* Install bootblock on the bootsector of device with the disk addresses to
* bootcode patched into the data segment of bootblock. "How" tells if there
* should or shoudn't be a file system on the disk. The images in the imagev
* vector are added to the end of the device.
*/
{
char buf[_MAX_BLOCK_SIZE + 256], *adrp, *parmp;
struct fileaddr {
off_t address;
int count;
} bootaddr[BOOT_MAX + 1], *bap= bootaddr;
struct exec boothdr;
struct image_header dummy;
struct stat st;
ino_t ino;
off_t sector, max_sector;
FILE *bootf;
off_t addr, fssize, pos, len;
char *labels, *label, *image;
int nolabel;
int block_size = 0;
/* Open device and set variables for readblock. */
if ((rawfd= open(rawdev= device, O_RDWR)) < 0) fatal(device);
/* Read and check the superblock. */
fssize= r_super(&block_size);
switch (how) {
case FS:
if (fssize == 0) {
fprintf(stderr,
"installboot: %s is not a Minix file system\n",
device);
exit(1);
}
break;
case BOOT:
if (fssize != 0) {
int s;
printf("%s contains a file system!\n", device);
printf("Scribbling in 10 seconds");
for (s= 0; s < 10; s++) {
fputc('.', stdout);
fflush(stdout);
sleep(1);
}
fputc('\n', stdout);
}
fssize= 1; /* Just a boot block. */
}
if (how == FS) {
/* See if the boot code can be found on the file system. */
if ((ino= r_lookup(ROOT_INO, bootcode)) == 0) {
if (errno != ENOENT) fatal(bootcode);
}
} else {
/* Boot code must be attached at the end. */
ino= 0;
}
if (ino == 0) {
/* For a raw installation, we need to copy the boot code onto
* the device, so we need to look at the file to be copied.
*/
if (stat(bootcode, &st) < 0) fatal(bootcode);
if ((bootf= fopen(bootcode, "r")) == nil) fatal(bootcode);
} else {
/* Boot code is present in the file system. */
r_stat(ino, &st);
/* Get the header from the first block. */
if ((addr= r_vir2abs((off_t) 0)) == 0) {
boothdr.a_magic[0]= !A_MAGIC0;
} else {
readblock(addr, buf, block_size);
/* Must skip 16 bytes of 'boot' as that contains code. */
memcpy(&boothdr, buf + 16, sizeof(struct exec));
}
bootf= nil;
dummy.process= boothdr;
}
/* See if it is an executable (read_header does the check). */
read_header(0, bootcode, bootf, &dummy);
boothdr= dummy.process;
if (bootf != nil) fclose(bootf);
/* Get all the sector addresses of the secondary boot code. */
max_sector= (boothdr.a_hdrlen + boothdr.a_text
+ boothdr.a_data + SECTOR_SIZE - 1) / SECTOR_SIZE;
if (max_sector > BOOT_MAX * RATIO(block_size)) {
fprintf(stderr, "installboot: %s is way too big\n", bootcode);
exit(0);
}
/* Determine the addresses to the boot code to be patched into the
* boot block.
*/
bap->count= 0; /* Trick to get the address recording going. */
for (sector= 0; sector < max_sector; sector++) {
if (ino == 0) {
addr= fssize + (sector / RATIO(block_size));
} else
if ((addr= r_vir2abs(sector / RATIO(block_size))) == 0) {
fprintf(stderr, "installboot: %s has holes!\n",
bootcode);
exit(1);
}
addr= (addr * RATIO(block_size)) + (sector % RATIO(block_size));
/* First address of the addresses array? */
if (bap->count == 0) bap->address= addr;
/* Paste sectors together in a multisector read. */
if (bap->address + bap->count == addr)
bap->count++;
else {
/* New address. */
bap++;
bap->address= addr;
bap->count= 1;
}
}
(++bap)->count= 0; /* No more. */
/* Get the boot block and patch the pieces in. */
readblock(BOOTBLOCK, buf, BOOT_BLOCK_SIZE);
if ((bootf= fopen(bootblock, "r")) == nil) fatal(bootblock);
read_header(0, bootblock, bootf, &dummy);
boothdr= dummy.process;
if (boothdr.a_text + boothdr.a_data +
4 * (bap - bootaddr) + 1 > PARTPOS) {
fprintf(stderr,
"installboot: %s + addresses to %s don't fit in the boot sector\n",
bootblock, bootcode);
fprintf(stderr,
"You can try copying/reinstalling %s to defragment it\n",
bootcode);
exit(1);
}
/* All checks out right. Read bootblock into the boot block! */
bread(bootf, bootblock, buf, boothdr.a_text + boothdr.a_data);
(void) fclose(bootf);
/* Patch the addresses in. */
adrp= buf + (int) (boothdr.a_text + boothdr.a_data);
for (bap= bootaddr; bap->count != 0; bap++) {
*adrp++= bap->count;
*adrp++= (bap->address >> 0) & 0xFF;
*adrp++= (bap->address >> 8) & 0xFF;
*adrp++= (bap->address >> 16) & 0xFF;
}
/* Zero count stops bootblock's reading loop. */
*adrp++= 0;
if (bap > bootaddr+1) {
printf("%s and %d addresses to %s patched into %s\n",
bootblock, (int)(bap - bootaddr), bootcode, device);
}
/* Boot block signature. */
buf[SIGPOS+0]= (SIGNATURE >> 0) & 0xFF;
buf[SIGPOS+1]= (SIGNATURE >> 8) & 0xFF;
/* Sector 2 of the boot block is used for boot parameters, initially
* filled with null commands (newlines). Initialize it only if
* necessary.
*/
for (parmp= buf + SECTOR_SIZE; parmp < buf + 2*SECTOR_SIZE; parmp++) {
if (*imagev != nil || (control(*parmp) && *parmp != '\n')) {
/* Param sector must be initialized. */
memset(buf + SECTOR_SIZE, '\n', SECTOR_SIZE);
break;
}
}
/* Offset to the end of the file system to add boot code and images. */
pos= fssize * RATIO(block_size);
if (ino == 0) {
/* Place the boot code onto the boot device. */
len= max_sector;
if (!raw_install(bootcode, &pos, &len, block_size)) {
if (how == FS) {
fprintf(stderr,
"\t(Isn't there a copy of %s on %s that can be used?)\n",
bootcode, device);
}
exit(1);
}
}
parmp= buf + SECTOR_SIZE;
nolabel= 0;
if (how == BOOT) {
/* A boot only disk needs to have floppies swapped. */
strcpy(parmp,
"trailer()echo \\nInsert the root diskette then hit RETURN\\n\\w\\c\n");
parmp+= strlen(parmp);
}
while ((labels= *imagev++) != nil) {
/* Place each kernel image on the boot device. */
if ((image= strchr(labels, ':')) != nil)
*image++= 0;
else {
if (nolabel) {
fprintf(stderr,
"installboot: Only one image can be the default\n");
exit(1);
}
nolabel= 1;
image= labels;
labels= nil;
}
len= 0;
if (!raw_install(image, &pos, &len, block_size)) exit(1);
if (labels == nil) {
/* Let this image be the default. */
sprintf(parmp, "image=%ld:%ld\n", pos-len, len);
parmp+= strlen(parmp);
}
while (labels != nil) {
/* Image is prefixed by a comma separated list of
* labels. Define functions to select label and image.
*/
label= labels;
if ((labels= strchr(labels, ',')) != nil) *labels++ = 0;
sprintf(parmp,
"%s(%c){label=%s;image=%ld:%ld;echo %s kernel selected;menu}\n",
label,
between('A', label[0], 'Z')
? label[0]-'A'+'a' : label[0],
label, pos-len, len, label);
parmp+= strlen(parmp);
}
if (parmp > buf + block_size) {
fprintf(stderr,
"installboot: Out of parameter space, too many images\n");
exit(1);
}
}
/* Install boot block. */
writeblock((off_t) BOOTBLOCK, buf, 1024);
if (pos > fssize * RATIO(block_size)) {
/* Tell the total size of the data on the device. */
printf("%16ld (%ld kb) total\n", pos,
(pos + RATIO(block_size) - 1) / RATIO(block_size));
}
}
void install_master(char *device, char *masterboot, char **guide)
/* Booting a hard disk is a two stage process: The master bootstrap in sector
* 0 loads the bootstrap from sector 0 of the active partition which in turn
* starts the operating system. This code installs such a master bootstrap
* on a hard disk. If guide[0] is non-null then the master bootstrap is
* guided into booting a certain device.
*/
{
FILE *masf;
unsigned long size;
struct stat st;
static char buf[_MAX_BLOCK_SIZE];
/* Open device. */
if ((rawfd= open(rawdev= device, O_RDWR)) < 0) fatal(device);
/* Open the master boot code. */
if ((masf= fopen(masterboot, "r")) == nil) fatal(masterboot);
/* See if the user is cloning a device. */
if (fstat(fileno(masf), &st) >=0 && S_ISBLK(st.st_mode))
size= PARTPOS;
else {
/* Read and check header otherwise. */
struct image_header ihdr;
read_header(1, masterboot, masf, &ihdr);
size= ihdr.process.a_text + ihdr.process.a_data;
}
if (size > PARTPOS) {
fprintf(stderr, "installboot: %s is too big\n", masterboot);
exit(1);
}
/* Read the master boot block, patch it, write. */
readblock(BOOTBLOCK, buf, BOOT_BLOCK_SIZE);
memset(buf, 0, PARTPOS);
(void) bread(masf, masterboot, buf, size);
if (guide[0] != nil) {
/* Fixate partition to boot. */
char *keys= guide[0];
char *logical= guide[1];
size_t i;
int logfd;
u32_t offset;
struct partition geometry;
/* A string of digits to be seen as keystrokes. */
i= 0;
do {
if (!between('0', keys[i], '9')) {
fprintf(stderr,
"installboot: bad guide keys '%s'\n",
keys);
exit(1);
}
} while (keys[++i] != 0);
if (size + i + 1 > PARTPOS) {
fprintf(stderr,
"installboot: not enough space after '%s' for '%s'\n",
masterboot, keys);
exit(1);
}
memcpy(buf + size, keys, i);
size += i;
buf[size]= '\r';
if (logical != nil) {
if ((logfd= open(logical, O_RDONLY)) < 0
|| ioctl(logfd, DIOCGETP, &geometry) < 0
) {
fatal(logical);
}
offset= div64u(geometry.base, SECTOR_SIZE);
if (size + 5 > PARTPOS) {
fprintf(stderr,
"installboot: not enough space "
"after '%s' for '%s' and an offset "
"to '%s'\n",
masterboot, keys, logical);
exit(1);
}
buf[size]= '#';
memcpy(buf+size+1, &offset, 4);
}
}
/* Install signature. */
buf[SIGPOS+0]= (SIGNATURE >> 0) & 0xFF;
buf[SIGPOS+1]= (SIGNATURE >> 8) & 0xFF;
writeblock(BOOTBLOCK, buf, BOOT_BLOCK_SIZE);
}
void usage(void)
{
fprintf(stderr,
"Usage: installboot -i(mage) image kernel mm fs ... init\n"
" installboot -(e)x(tract) image\n"
" installboot -d(evice) device bootblock boot [image ...]\n"
" installboot -b(oot) device bootblock boot image ...\n"
" installboot -m(aster) device masterboot [keys [logical]]\n");
exit(1);
}
int isoption(char *option, char *test)
/* Check if the option argument is equals "test". Also accept -i as short
* for -image, and the special case -x for -extract.
*/
{
if (strcmp(option, test) == 0) return 1;
if (option[0] != '-' && strlen(option) != 2) return 0;
if (option[1] == test[1]) return 1;
if (option[1] == 'x' && test[1] == 'e') return 1;
return 0;
}
int main(int argc, char **argv)
{
if (argc < 2) usage();
if (argc >= 4 && isoption(argv[1], "-image")) {
make_image(argv[2], argv + 3);
} else
if (argc == 3 && isoption(argv[1], "-extract")) {
extract_image(argv[2]);
} else
if (argc >= 5 && isoption(argv[1], "-device")) {
make_bootable(FS, argv[2], argv[3], argv[4], argv + 5);
} else
if (argc >= 6 && isoption(argv[1], "-boot")) {
make_bootable(BOOT, argv[2], argv[3], argv[4], argv + 5);
} else
if ((4 <= argc && argc <= 6) && isoption(argv[1], "-master")) {
install_master(argv[2], argv[3], argv + 4);
} else {
usage();
}
exit(0);
}
/*
* $PchId: installboot.c,v 1.10 2000/08/13 22:07:50 philip Exp $
*/