int
main(int argc, char *argv[])
{
int c;
int devfd;
char *protostore;
size_t protosize;
while ((c = getopt(argc, argv, "vnh")) != -1) {
switch (c) {
case 'h':
/* Don't strip a.out header */
hflag = 1;
break;
case 'n':
/* Do not actually write the bootblock to disk */
nowrite = 1;
break;
case 'v':
/* Chat */
verbose = 1;
break;
default:
usage();
}
}
if (argc - optind < 3) {
usage();
}
boot = argv[optind];
proto = argv[optind + 1];
dev = argv[optind + 2];
if (verbose) {
printf("boot: %s\n", boot);
printf("proto: %s\n", proto);
printf("device: %s\n", dev);
}
/* Load proto blocks into core */
if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
exit(1);
/* XXX - Paranoia: Make sure size is aligned! */
if (protosize & (DEV_BSIZE - 1))
err(1, "proto bootblock bad size=%d", protosize);
/* Open and check raw disk device */
if ((devfd = open(dev, O_RDONLY, 0)) < 0)
err(1, "open: %s", dev);
/* Extract and load block numbers */
if (loadblocknums(boot, devfd) != 0)
exit(1);
(void)close(devfd);
if (nowrite)
return 0;
/* Write patched proto bootblocks into the superblock */
if (protosize > SBLOCKSIZE - DEV_BSIZE)
errx(1, "proto bootblocks too big");
/* The primary bootblock needs to be written to the raw partition */
dev[strlen(dev) - 1] = 'a' + RAW_PART;
if ((devfd = open(dev, O_RDWR, 0)) < 0)
err(1, "open: %s", dev);
if (lseek(devfd, DEV_BSIZE, SEEK_SET) != DEV_BSIZE)
err(1, "lseek bootstrap");
/* Sync filesystems (to clean in-memory superblock?) */
sync();
if (write(devfd, protostore, protosize) != protosize)
err(1, "write bootstrap");
(void)close(devfd);
return 0;
}
int
main(int argc, char *argv[])
{
int c, devfd;
char *protostore;
long protosize;
struct stat disksb, bootsb;
struct disklabel dl;
daddr64_t partoffset;
#define BBPAD 0x1e0
struct bb {
char bb_pad[BBPAD]; /* disklabel lives in here, actually */
long bb_secsize; /* size of secondary boot block */
long bb_secstart; /* start of secondary boot block */
long bb_flags; /* unknown; always zero */
long bb_cksum; /* checksum of the boot block, as longs. */
} bb;
long *lp, *ep;
while ((c = getopt(argc, argv, "vns:e:")) != -1) {
switch (c) {
case 'n':
/* Do not actually write the bootblock to disk */
nowrite = 1;
break;
case 'v':
/* Chat */
verbose = 1;
break;
case 's':
isofsblk = atoi(optarg);
break;
case 'e':
isofseblk = atoi(optarg);
break;
default:
usage();
}
}
if (argc - optind < 3)
usage();
boot = argv[optind];
proto = argv[optind + 1];
dev = argv[optind + 2];
if (verbose) {
(void)printf("boot: %s\n", boot);
(void)printf("proto: %s\n", proto);
(void)printf("device: %s\n", dev);
}
/* Load proto blocks into core */
if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
exit(1);
/* Open and check raw disk device */
if ((devfd = opendev(dev, O_RDONLY, OPENDEV_PART, &dev)) < 0)
err(1, "open: %s", dev);
if (fstat(devfd, &disksb) == -1)
err(1, "fstat: %s", dev);
if (!S_ISCHR(disksb.st_mode))
errx(1, "%s must be a character device node", dev);
if ((minor(disksb.st_rdev) % getmaxpartitions()) != getrawpartition())
errx(1, "%s must be the raw partition", dev);
/* Extract and load block numbers */
if (stat(boot, &bootsb) == -1)
err(1, "stat: %s", boot);
if (!S_ISREG(bootsb.st_mode))
errx(1, "%s must be a regular file", boot);
if ((minor(disksb.st_rdev) / getmaxpartitions()) !=
(minor(bootsb.st_dev) / getmaxpartitions()))
errx(1, "%s must be somewhere on %s", boot, dev);
/*
* Find the offset of the secondary boot block's partition
* into the disk. If disklabels not supported, assume zero.
*/
if (ioctl(devfd, DIOCGDINFO, &dl) != -1) {
partoffset = DL_GETPOFFSET(&dl.d_partitions[minor(bootsb.st_dev) %
getmaxpartitions()]);
} else {
if (errno != ENOTTY)
err(1, "read disklabel: %s", dev);
warnx("couldn't read label from %s, using part offset of 0",
dev);
partoffset = 0;
}
if (verbose)
(void)printf("%s partition offset = 0x%lx\n", boot, partoffset);
/* Sync filesystems (make sure boot's block numbers are stable) */
sync();
sleep(2);
sync();
sleep(2);
if (loadblocknums(boot, devfd, partoffset) != 0)
exit(1);
(void)close(devfd);
if (nowrite)
return 0;
#if 0
/* Write patched proto bootblocks into the superblock */
if (protosize > SBSIZE - DEV_BSIZE)
errx(1, "proto bootblocks too big");
#endif
if ((devfd = opendev(dev, O_RDWR, OPENDEV_PART, &dev)) < 0)
err(1, "open: %s", dev);
if (lseek(devfd, DEV_BSIZE, SEEK_SET) != DEV_BSIZE)
err(1, "lseek bootstrap");
if (write(devfd, protostore, protosize) != protosize)
err(1, "write bootstrap");
if (lseek(devfd, 0, SEEK_SET) != 0)
err(1, "lseek label");
if (read(devfd, &bb, sizeof (bb)) != sizeof (bb))
err(1, "read label");
bb.bb_secsize = 15;
bb.bb_secstart = 1;
bb.bb_flags = 0;
bb.bb_cksum = 0;
for (lp = (long *)&bb, ep = &bb.bb_cksum; lp < ep; lp++)
bb.bb_cksum += *lp;
if (lseek(devfd, 0, SEEK_SET) != 0)
err(1, "lseek label 2");
if (write(devfd, &bb, sizeof bb) != sizeof bb)
err(1, "write label ");
(void)close(devfd);
return 0;
}