int
main(int argc, char *argv[])
{
FILE *t;
int ch, error, fd;
const char *name;
error = 0;
name = NULL;
while ((ch = getopt(argc, argv, "ABb:efm:nRrw")) != -1)
switch (ch) {
case 'A':
allfields = 1;
break;
case 'B':
++installboot;
break;
case 'b':
xxboot = optarg;
break;
case 'f':
is_file=1;
break;
case 'm':
if (!strcmp(optarg, "i386") ||
!strcmp(optarg, "amd64") ||
!strcmp(optarg, "ia64") ||
!strcmp(optarg, "pc98")) {
labelsoffset = 1;
labeloffset = 0;
bbsize = 8192;
} else {
errx(1, "Unsupported architecture");
}
break;
case 'n':
disable_write = 1;
break;
case 'R':
if (op != UNSPEC)
usage();
op = RESTORE;
break;
case 'e':
if (op != UNSPEC)
usage();
op = EDIT;
break;
case 'r':
/*
* We accept and ignore -r for compatibility with
* historical disklabel usage.
*/
break;
case 'w':
if (op != UNSPEC)
usage();
op = WRITE;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
if (labelsoffset < 0 || labeloffset < 0)
errx(1, "a -m <architecture> option must be specified");
/* Figure out the names of the thing we're working on */
if (is_file) {
specname = argv[0];
} else {
specname = g_device_path(argv[0]);
if (specname == NULL) {
warn("unable to get correct path for %s", argv[0]);
return(1);
}
fd = open(specname, O_RDONLY);
if (fd < 0) {
warn("error opening %s", specname);
return(1);
}
pname = g_providername(fd);
if (pname == NULL) {
warn("error getting providername for %s", specname);
close(fd);
return(1);
}
close(fd);
}
if (installboot && op == UNSPEC)
op = WRITEBOOT;
else if (op == UNSPEC)
op = READ;
switch(op) {
case UNSPEC:
break;
case EDIT:
if (argc != 1)
usage();
readlabel(1);
fixlabel(&lab);
error = edit();
break;
case READ:
if (argc != 1)
usage();
readlabel(1);
display(stdout, NULL);
error = checklabel(NULL);
break;
case RESTORE:
if (argc != 2)
usage();
if (!(t = fopen(argv[1], "r")))
err(4, "fopen %s", argv[1]);
readlabel(0);
if (!getasciilabel(t, &lab))
exit(1);
error = writelabel();
break;
case WRITE:
if (argc == 2)
name = argv[1];
else if (argc == 1)
name = "auto";
else
usage();
readlabel(0);
makelabel(name, &lab);
fixlabel(&lab);
if (checklabel(NULL) == 0)
error = writelabel();
break;
case WRITEBOOT:
readlabel(1);
fixlabel(&lab);
if (argc == 2)
makelabel(argv[1], &lab);
if (checklabel(NULL) == 0)
error = writelabel();
break;
}
exit(error);
}
/*
* Boot manager installation/configuration utility.
*/
int
main(int argc, char *argv[])
{
u_int8_t *mbr, *boot0;
int boot0_size, mbr_size;
const char *bpath, *fpath;
char *disk;
int B_flag, o_flag;
int d_arg, m_arg, s_arg, t_arg;
int o_and, o_or, o_e = -1;
int up, c;
bpath = "/boot/boot0";
fpath = NULL;
B_flag = v_flag = o_flag = 0;
d_arg = m_arg = s_arg = t_arg = -1;
o_and = 0xff;
o_or = 0;
while ((c = getopt(argc, argv, "Bvb:d:e:f:i:m:o:s:t:")) != -1)
switch (c) {
case 'B':
B_flag = 1;
break;
case 'v':
v_flag = 1;
break;
case 'b':
bpath = optarg;
break;
case 'd':
d_arg = argtoi(optarg, 0, 0xff, 'd');
break;
case 'e':
if (optarg[0] == '0' && optarg[1] == 'x')
sscanf(optarg, "0x%02x", &o_e);
else
o_e = optarg[0];
break;
case 'f':
fpath = optarg;
break;
case 'i':
if (sscanf(optarg, "%02x%02x-%02x%02x",
vol_id, vol_id+1, vol_id+2, vol_id+3) == 4)
vol_id[4] = 1;
else
errx(1, "bad argument %s", optarg);
break;
case 'm':
m_arg = argtoi(optarg, 0, 0xf, 'm');
break;
case 'o':
stropt(optarg, &o_and, &o_or);
o_flag = 1;
break;
case 's':
if (strcasecmp(optarg, "pxe") == 0)
s_arg = 6;
else
s_arg = argtoi(optarg, 1, 6, 's');
break;
case 't':
t_arg = argtoi(optarg, 1, 0xffff, 't');
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
disk = g_device_path(*argv);
if (disk == NULL)
errx(1, "Unable to get providername for %s\n", *argv);
up = B_flag || d_arg != -1 || m_arg != -1 || o_flag || s_arg != -1
|| t_arg != -1;
/* open the disk and read in the existing mbr. Either here or
* when reading the block from disk, we do check for the version
* and abort if a suitable block is not found.
*/
mbr_size = read_mbr(disk, &mbr, !B_flag);
/* save the existing MBR if we are asked to do so */
if (fpath)
write_mbr(fpath, O_CREAT | O_TRUNC, mbr, mbr_size);
/*
* If we are installing the boot loader, read it from disk and copy the
* slice table over from the existing MBR. If not, then point boot0
* back at the MBR we just read in. After this, boot0 is the data to
* write back to disk if we are going to do a write.
*/
if (B_flag) {
boot0_size = read_mbr(bpath, &boot0, 1);
memcpy(boot0 + OFF_PTBL, mbr + OFF_PTBL,
sizeof(struct dos_partition) * NDOSPART);
if (b0_ver == 2) /* volume serial number support */
memcpy(boot0 + OFF_SERIAL, mbr + OFF_SERIAL, 4);
} else {
boot0 = mbr;
boot0_size = mbr_size;
}
/* set the drive */
if (d_arg != -1)
boot0[OFF_DRIVE] = d_arg;
/* set various flags */
if (m_arg != -1) {
boot0[OFF_FLAGS] &= 0xf0;
boot0[OFF_FLAGS] |= m_arg;
}
if (o_flag) {
boot0[OFF_FLAGS] &= o_and;
boot0[OFF_FLAGS] |= o_or;
}
/* set the default boot selection */
if (s_arg != -1)
boot0[OFF_OPT] = s_arg - 1;
/* set the timeout */
if (t_arg != -1)
mk2(boot0 + OFF_TICKS, t_arg);
/* set the bell char */
if (o_e != -1 && set_bell(boot0, o_e, 0) != -1)
up = 1;
if (vol_id[4]) {
if (b0_ver != 2)
errx(1, "incompatible boot block, cannot set volume ID");
boot0[OFF_SERIAL] = vol_id[0];
boot0[OFF_SERIAL+1] = vol_id[1];
boot0[OFF_SERIAL+2] = vol_id[2];
boot0[OFF_SERIAL+3] = vol_id[3];
up = 1; /* force update */
}
/* write the MBR back to disk */
if (up)
write_mbr(disk, 0, boot0, boot0_size);
/* display the MBR */
if (v_flag)
display_mbr(boot0);
/* clean up */
if (mbr != boot0)
free(boot0);
free(mbr);
free(disk);
return 0;
}
