diff options
Diffstat (limited to 'fs/partitions/ibm.c')
| -rw-r--r-- | fs/partitions/ibm.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c deleted file mode 100644 index 78010ad60e4..00000000000 --- a/fs/partitions/ibm.c +++ /dev/null @@ -1,192 +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 - - * History of changes (starts July 2000) - * 07/10/00 Fixed detection of CMS formatted disks - * 02/13/00 VTOC partition support added - * 12/27/01 fixed PL030593 (CMS reserved minidisk not detected on 64 bit) - * 07/24/03 no longer using contents of freed page for CMS label recognition (BZ3611) - */ - -#include <linux/config.h> -#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 inline int -cchh2blk (struct vtoc_cchh *ptr, struct hd_geometry *geo) { - return ptr->cc * geo->heads * geo->sectors + - ptr->hh * geo->sectors; -} - - -/* - * compute the block number from a - * cyl-cyl-head-head-block structure - */ -static inline int -cchhb2blk (struct vtoc_cchhb *ptr, struct hd_geometry *geo) { - return ptr->cc * geo->heads * geo->sectors + - ptr->hh * geo->sectors + - ptr->b; -} - -/* - */ -int -ibm_partition(struct parsed_partitions *state, struct block_device *bdev) -{ - int blocksize, offset, size; - dasd_information_t *info; - struct hd_geometry *geo; - char type[5] = {0,}; - char name[7] = {0,}; - union label_t { - struct vtoc_volume_label vol; - struct vtoc_cms_label cms; - } *label; - unsigned char *data; - Sector sect; - - if ((info = kmalloc(sizeof(dasd_information_t), GFP_KERNEL)) == NULL) - goto out_noinfo; - if ((geo = kmalloc(sizeof(struct hd_geometry), GFP_KERNEL)) == NULL) - goto out_nogeo; - if ((label = kmalloc(sizeof(union label_t), GFP_KERNEL)) == NULL) - goto out_nolab; - - if (ioctl_by_bdev(bdev, BIODASDINFO, (unsigned long)info) != 0 || - ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0) - goto out_noioctl; - - if ((blocksize = bdev_hardsect_size(bdev)) <= 0) - goto out_badsect; - - /* - * Get volume label, extract name and type. - */ - data = read_dev_sector(bdev, 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); - - EBCASC(type, 4); - EBCASC(name, 6); - - /* - * Three different types: CMS1, VOL1 and LNX1/unlabeled - */ - if (strncmp(type, "CMS1", 4) == 0) { - /* - * VM style CMS1 labeled disk - */ - 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 = bdev->bd_inode->i_size >> 9; - } - put_partition(state, 1, offset*(blocksize >> 9), - size-offset*(blocksize >> 9)); - } else if ((strncmp(type, "VOL1", 4) == 0) && - (!info->FBA_layout) && (!strcmp(info->type, "ECKD"))) { - /* - * New style VOL1 labeled disk - */ - unsigned int blk; - int counter; - - printk("VOL1/%8s:", name); - - /* get block number and read then go through format1 labels */ - blk = cchhb2blk(&label->vol.vtoc, geo) + 1; - counter = 0; - while ((data = read_dev_sector(bdev, blk*(blocksize/512), - §)) != 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']) { - blk++; - continue; - } - - /* only FMT1 valid at this point */ - if (f1.DS1FMTID != _ascebc['1']) - 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++; - } - } else { - /* - * Old style LNX1 or unlabeled disk - */ - if (strncmp(type, "LNX1", 4) == 0) - printk ("LNX1/%8s:", name); - else - printk("(nonl)/%8s:", name); - offset = (info->label_block + 1); - size = (bdev->bd_inode->i_size >> 9); - put_partition(state, 1, offset*(blocksize >> 9), - size-offset*(blocksize >> 9)); - } - - printk("\n"); - kfree(label); - kfree(geo); - kfree(info); - return 1; - -out_readerr: -out_badsect: -out_noioctl: - kfree(label); -out_nolab: - kfree(geo); -out_nogeo: - kfree(info); -out_noinfo: - return 0; -} |