* compute the block number from a
* cyl-cyl-head-head structure
*/
-static inline int
+static sector_t
cchh2blk (struct vtoc_cchh *ptr, struct hd_geometry *geo) {
- return ptr->cc * geo->heads * geo->sectors +
- ptr->hh * geo->sectors;
+
+ sector_t cyl;
+ __u16 head;
+
+ /*decode cylinder and heads for large volumes */
+ cyl = ptr->hh & 0xFFF0;
+ cyl <<= 12;
+ cyl |= ptr->cc;
+ head = ptr->hh & 0x000F;
+ return cyl * geo->heads * geo->sectors +
+ head * geo->sectors;
}
/*
* compute the block number from a
* cyl-cyl-head-head-block structure
*/
-static inline int
+static sector_t
cchhb2blk (struct vtoc_cchhb *ptr, struct hd_geometry *geo) {
- return ptr->cc * geo->heads * geo->sectors +
- ptr->hh * geo->sectors +
+
+ sector_t cyl;
+ __u16 head;
+
+ /*decode cylinder and heads for large volumes */
+ cyl = ptr->hh & 0xFFF0;
+ cyl <<= 12;
+ cyl |= ptr->cc;
+ head = ptr->hh & 0x000F;
+ return cyl * geo->heads * geo->sectors +
+ head * geo->sectors +
ptr->b;
}
/*
*/
-int
-ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
+int ibm_partition(struct parsed_partitions *state)
{
- int blocksize, offset, size,res;
- loff_t i_size;
+ struct block_device *bdev = state->bdev;
+ int blocksize, res;
+ loff_t i_size, offset, size, fmt_size;
dasd_information2_t *info;
struct hd_geometry *geo;
char type[5] = {0,};
char name[7] = {0,};
union label_t {
- struct vtoc_volume_label vol;
+ struct vtoc_volume_label_cdl vol;
+ struct vtoc_volume_label_ldl lnx;
struct vtoc_cms_label cms;
} *label;
unsigned char *data;
Sector sect;
res = 0;
- blocksize = bdev_hardsect_size(bdev);
+ blocksize = bdev_logical_block_size(bdev);
if (blocksize <= 0)
goto out_exit;
i_size = i_size_read(bdev->bd_inode);
/*
* Get volume label, extract name and type.
*/
- data = read_dev_sector(bdev, info->label_block*(blocksize/512), §);
+ data = read_part_sector(state, info->label_block*(blocksize/512),
+ §);
if (data == NULL)
goto out_readerr;
- strncpy (type, data, 4);
- if ((!info->FBA_layout) && (!strcmp(info->type, "ECKD")))
- strncpy(name, data + 8, 6);
- else
- strncpy(name, data + 4, 6);
memcpy(label, data, sizeof(union label_t));
put_dev_sector(sect);
+ if ((!info->FBA_layout) && (!strcmp(info->type, "ECKD"))) {
+ strncpy(type, label->vol.vollbl, 4);
+ strncpy(name, label->vol.volid, 6);
+ } else {
+ strncpy(type, label->lnx.vollbl, 4);
+ strncpy(name, label->lnx.volid, 6);
+ }
EBCASC(type, 4);
EBCASC(name, 6);
/*
* VM style CMS1 labeled disk
*/
+ blocksize = label->cms.block_size;
if (label->cms.disk_offset != 0) {
printk("CMS1/%8s(MDSK):", name);
/* disk is reserved minidisk */
- blocksize = label->cms.block_size;
offset = label->cms.disk_offset;
size = (label->cms.block_count - 1)
* (blocksize >> 9);
} else {
printk("CMS1/%8s:", name);
offset = (info->label_block + 1);
- size = i_size >> 9;
+ size = label->cms.block_count
+ * (blocksize >> 9);
}
+ put_partition(state, 1, offset*(blocksize >> 9),
+ size-offset*(blocksize >> 9));
} else {
- /*
- * Old style LNX1 or unlabeled disk
- */
- if (strncmp(type, "LNX1", 4) == 0)
- printk ("LNX1/%8s:", name);
- else
+ if (strncmp(type, "LNX1", 4) == 0) {
+ printk("LNX1/%8s:", name);
+ if (label->lnx.ldl_version == 0xf2) {
+ fmt_size = label->lnx.formatted_blocks
+ * (blocksize >> 9);
+ } else if (!strcmp(info->type, "ECKD")) {
+ /* formated w/o large volume support */
+ fmt_size = geo->cylinders * geo->heads
+ * geo->sectors * (blocksize >> 9);
+ } else {
+ /* old label and no usable disk geometry
+ * (e.g. DIAG) */
+ fmt_size = i_size >> 9;
+ }
+ size = i_size >> 9;
+ if (fmt_size < size)
+ size = fmt_size;
+ offset = (info->label_block + 1);
+ } else {
+ /* unlabeled disk */
printk("(nonl)");
- offset = (info->label_block + 1);
- size = i_size >> 9;
- }
- put_partition(state, 1, offset*(blocksize >> 9),
+ size = i_size >> 9;
+ offset = (info->label_block + 1);
+ }
+ put_partition(state, 1, offset*(blocksize >> 9),
size-offset*(blocksize >> 9));
+ }
} else if (info->format == DASD_FORMAT_CDL) {
/*
* New style CDL formatted disk
*/
- unsigned int blk;
+ sector_t blk;
int counter;
/*
*/
blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
counter = 0;
- data = read_dev_sector(bdev, blk * (blocksize/512),
- §);
+ data = read_part_sector(state, blk * (blocksize/512),
+ §);
while (data != NULL) {
struct vtoc_format1_label f1;
/* skip FMT4 / FMT5 / FMT7 labels */
if (f1.DS1FMTID == _ascebc['4']
|| f1.DS1FMTID == _ascebc['5']
- || f1.DS1FMTID == _ascebc['7']) {
+ || f1.DS1FMTID == _ascebc['7']
+ || f1.DS1FMTID == _ascebc['9']) {
blk++;
- data = read_dev_sector(bdev, blk *
- (blocksize/512),
- §);
+ data = read_part_sector(state,
+ blk * (blocksize/512), §);
continue;
}
- /* only FMT1 valid at this point */
- if (f1.DS1FMTID != _ascebc['1'])
+ /* only FMT1 and 8 labels valid at this point */
+ if (f1.DS1FMTID != _ascebc['1'] &&
+ f1.DS1FMTID != _ascebc['8'])
break;
/* OK, we got valid partition data */
size * (blocksize >> 9));
counter++;
blk++;
- data = read_dev_sector(bdev,
- blk * (blocksize/512),
- §);
+ data = read_part_sector(state,
+ blk * (blocksize/512), §);
}
if (!data)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff