aboutsummaryrefslogtreecommitdiff
path: root/fs/partitions/ibm.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/partitions/ibm.c')
-rw-r--r--fs/partitions/ibm.c275
1 files changed, 0 insertions, 275 deletions
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
deleted file mode 100644
index d513a07f44b..00000000000
--- a/fs/partitions/ibm.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * File...........: linux/fs/partitions/ibm.c
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Volker Sameske <sameske@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
- */
-
-#include <linux/buffer_head.h>
-#include <linux/hdreg.h>
-#include <linux/slab.h>
-#include <asm/dasd.h>
-#include <asm/ebcdic.h>
-#include <asm/uaccess.h>
-#include <asm/vtoc.h>
-
-#include "check.h"
-#include "ibm.h"
-
-/*
- * compute the block number from a
- * cyl-cyl-head-head structure
- */
-static sector_t
-cchh2blk (struct vtoc_cchh *ptr, struct hd_geometry *geo) {
-
- 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 sector_t
-cchhb2blk (struct vtoc_cchhb *ptr, struct hd_geometry *geo) {
-
- 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 = 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_cdl vol;
- struct vtoc_volume_label_ldl lnx;
- struct vtoc_cms_label cms;
- } *label;
- unsigned char *data;
- Sector sect;
- sector_t labelsect;
- char tmp[64];
-
- res = 0;
- blocksize = bdev_logical_block_size(bdev);
- if (blocksize <= 0)
- goto out_exit;
- i_size = i_size_read(bdev->bd_inode);
- if (i_size == 0)
- goto out_exit;
-
- info = kmalloc(sizeof(dasd_information2_t), GFP_KERNEL);
- if (info == NULL)
- goto out_exit;
- geo = kmalloc(sizeof(struct hd_geometry), GFP_KERNEL);
- if (geo == NULL)
- goto out_nogeo;
- label = kmalloc(sizeof(union label_t), GFP_KERNEL);
- if (label == NULL)
- goto out_nolab;
-
- if (ioctl_by_bdev(bdev, BIODASDINFO2, (unsigned long)info) != 0 ||
- ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0)
- goto out_freeall;
-
- /*
- * Special case for FBA disks: label sector does not depend on
- * blocksize.
- */
- if ((info->cu_type == 0x6310 && info->dev_type == 0x9336) ||
- (info->cu_type == 0x3880 && info->dev_type == 0x3370))
- labelsect = info->label_block;
- else
- labelsect = info->label_block * (blocksize >> 9);
-
- /*
- * Get volume label, extract name and type.
- */
- data = read_part_sector(state, labelsect, &sect);
- if (data == NULL)
- goto out_readerr;
-
- 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);
-
- res = 1;
-
- /*
- * Three different formats: LDL, CDL and unformated disk
- *
- * identified by info->format
- *
- * unformated disks we do not have to care about
- */
- if (info->format == DASD_FORMAT_LDL) {
- if (strncmp(type, "CMS1", 4) == 0) {
- /*
- * VM style CMS1 labeled disk
- */
- blocksize = label->cms.block_size;
- if (label->cms.disk_offset != 0) {
- snprintf(tmp, sizeof(tmp), "CMS1/%8s(MDSK):", name);
- strlcat(state->pp_buf, tmp, PAGE_SIZE);
- /* disk is reserved minidisk */
- offset = label->cms.disk_offset;
- size = (label->cms.block_count - 1)
- * (blocksize >> 9);
- } else {
- snprintf(tmp, sizeof(tmp), "CMS1/%8s:", name);
- strlcat(state->pp_buf, tmp, PAGE_SIZE);
- offset = (info->label_block + 1);
- size = label->cms.block_count
- * (blocksize >> 9);
- }
- put_partition(state, 1, offset*(blocksize >> 9),
- size-offset*(blocksize >> 9));
- } else {
- if (strncmp(type, "LNX1", 4) == 0) {
- snprintf(tmp, sizeof(tmp), "LNX1/%8s:", name);
- strlcat(state->pp_buf, tmp, PAGE_SIZE);
- 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 */
- strlcat(state->pp_buf, "(nonl)", PAGE_SIZE);
- 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
- */
- sector_t blk;
- int counter;
-
- /*
- * check if VOL1 label is available
- * if not, something is wrong, skipping partition detection
- */
- if (strncmp(type, "VOL1", 4) == 0) {
- snprintf(tmp, sizeof(tmp), "VOL1/%8s:", name);
- strlcat(state->pp_buf, tmp, PAGE_SIZE);
- /*
- * get block number and read then go through format1
- * labels
- */
- blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
- counter = 0;
- data = read_part_sector(state, blk * (blocksize/512),
- &sect);
- while (data != NULL) {
- struct vtoc_format1_label f1;
-
- memcpy(&f1, data,
- sizeof(struct vtoc_format1_label));
- put_dev_sector(sect);
-
- /* skip FMT4 / FMT5 / FMT7 labels */
- if (f1.DS1FMTID == _ascebc['4']
- || f1.DS1FMTID == _ascebc['5']
- || f1.DS1FMTID == _ascebc['7']
- || f1.DS1FMTID == _ascebc['9']) {
- blk++;
- data = read_part_sector(state,
- blk * (blocksize/512), &sect);
- continue;
- }
-
- /* 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 */
- offset = cchh2blk(&f1.DS1EXT1.llimit, geo);
- size = cchh2blk(&f1.DS1EXT1.ulimit, geo) -
- offset + geo->sectors;
- if (counter >= state->limit)
- break;
- put_partition(state, counter + 1,
- offset * (blocksize >> 9),
- size * (blocksize >> 9));
- counter++;
- blk++;
- data = read_part_sector(state,
- blk * (blocksize/512), &sect);
- }
-
- if (!data)
- /* Are we not supposed to report this ? */
- goto out_readerr;
- } else
- printk(KERN_WARNING "Warning, expected Label VOL1 not "
- "found, treating as CDL formated Disk");
-
- }
-
- strlcat(state->pp_buf, "\n", PAGE_SIZE);
- goto out_freeall;
-
-
-out_readerr:
- res = -1;
-out_freeall:
- kfree(label);
-out_nolab:
- kfree(geo);
-out_nogeo:
- kfree(info);
-out_exit:
- return res;
-}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-26 09:36:39 +0000