static void
sgi_write_table(void)
{
sgilabel->csum = 0;
sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)));
assert(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)) == 0);
if (lseek(fd, 0, SEEK_SET) < 0)
fdisk_fatal(unable_to_seek);
if (write(fd, sgilabel, SECTOR_SIZE) != SECTOR_SIZE)
fdisk_fatal(unable_to_write);
if (!strncmp((char*)sgilabel->directory[0].vol_file_name, "sgilabel", 8)) {
/*
* keep this habit of first writing the "sgilabel".
* I never tested whether it works without (AN 981002).
*/
sgiinfo *info = fill_sgiinfo();
int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start);
if (lseek(fd, infostartblock*SECTOR_SIZE, SEEK_SET) < 0)
fdisk_fatal(unable_to_seek);
if (write(fd, info, SECTOR_SIZE) != SECTOR_SIZE)
fdisk_fatal(unable_to_write);
free(info);
}
}
static int
check_sgi_label(void)
{
if (sizeof(sgi_partition) > 512) {
/* According to MIPS Computer Systems, Inc the label
* must not contain more than 512 bytes */
BUG_bad_sgi_partition_size();
}
if (sgilabel->magic != SGI_LABEL_MAGIC
&& sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED
) {
current_label_type = label_dos;
return 0;
}
sgi_other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED);
/*
* test for correct checksum
*/
if (two_s_complement_32bit_sum((unsigned int*)sgilabel,
sizeof(*sgilabel))) {
printf("Detected sgi disklabel with wrong checksum\n");
}
update_units();
current_label_type = label_sgi;
partitions = 16;
sgi_volumes = 15;
return 1;
}
static int
sgi_probe_label(struct fdisk_context *cxt) {
if (sizeof(sgilabel) > 512) {
fprintf(stderr,
_("According to MIPS Computer Systems, Inc the "
"Label must not contain more than 512 bytes\n"));
exit(1);
}
if (sgilabel->magic != SGI_LABEL_MAGIC &&
sgilabel->magic != SGI_LABEL_MAGIC_SWAPPED) {
other_endian = 0;
return 0;
}
other_endian = (sgilabel->magic == SGI_LABEL_MAGIC_SWAPPED);
/*
* test for correct checksum
*/
if (two_s_complement_32bit_sum((unsigned int*)sgilabel,
sizeof(*sgilabel))) {
fprintf(stderr,
_("Detected sgi disklabel with wrong checksum.\n"));
}
cxt->disklabel = FDISK_DISKLABEL_SGI;
partitions= 16;
volumes = 15;
return 1;
}
static void
sgi_write_table(void)
{
sgilabel->csum = 0;
sgilabel->csum = SGI_SSWAP32(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)));
assert(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)) == 0);
write_sector(0, sgilabel);
if (is_prefixed_with((char*)sgilabel->directory[0].vol_file_name, "sgilabel")) {
/*
* keep this habit of first writing the "sgilabel".
* I never tested whether it works without (AN 981002).
*/
sgiinfo *info = fill_sgiinfo();
int infostartblock = SGI_SSWAP32(sgilabel->directory[0].vol_file_start);
write_sector(infostartblock, info);
free(info);
}
}
static int sgi_write_disklabel(struct fdisk_context *cxt)
{
sgiinfo *info = NULL;
sgilabel->csum = 0;
sgilabel->csum = SSWAP32(two_s_complement_32bit_sum(
(unsigned int*)sgilabel,
sizeof(*sgilabel)));
assert(two_s_complement_32bit_sum(
(unsigned int*)sgilabel, sizeof(*sgilabel)) == 0);
if (lseek(cxt->dev_fd, 0, SEEK_SET) < 0)
goto err;
if (write(cxt->dev_fd, sgilabel, SECTOR_SIZE) != SECTOR_SIZE)
goto err;
if (!strncmp((char *) sgilabel->directory[0].vol_file_name, "sgilabel", 8)) {
/*
* keep this habit of first writing the "sgilabel".
* I never tested whether it works without (AN 981002).
*/
int infostartblock
= SSWAP32(sgilabel->directory[0].vol_file_start);
if (lseek(cxt->dev_fd, (off_t) infostartblock *
SECTOR_SIZE, SEEK_SET) < 0)
goto err;
info = fill_sgiinfo();
if (!info)
goto err;
if (write(cxt->dev_fd, info, SECTOR_SIZE) != SECTOR_SIZE)
goto err;
}
free(info);
return 0;
err:
free(info);
return -errno;
}
