diff options
Diffstat (limited to 'windhoek/partitions/ibm.c')
| -rw-r--r-- | windhoek/partitions/ibm.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/windhoek/partitions/ibm.c b/windhoek/partitions/ibm.c deleted file mode 100644 index 1e064c4a..00000000 --- a/windhoek/partitions/ibm.c +++ /dev/null @@ -1,220 +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 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,res; - loff_t i_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_cms_label cms; - } *label; - unsigned char *data; - Sector sect; - - res = 0; - blocksize = bdev_hardsect_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; - - /* - * 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); - - 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 - */ - 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; - } - } else { - /* - * Old style LNX1 or unlabeled disk - */ - if (strncmp(type, "LNX1", 4) == 0) - printk ("LNX1/%8s:", name); - else - printk("(nonl)"); - offset = (info->label_block + 1); - size = i_size >> 9; - } - 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; - int counter; - - /* - * check if VOL1 label is available - * if not, something is wrong, skipping partition detection - */ - if (strncmp(type, "VOL1", 4) == 0) { - printk("VOL1/%8s:", name); - /* - * get block number and read then go through format1 - * labels - */ - blk = cchhb2blk(&label->vol.vtoc, geo) + 1; - counter = 0; - data = read_dev_sector(bdev, blk * (blocksize/512), - §); - 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']) { - blk++; - data = read_dev_sector(bdev, blk * - (blocksize/512), - §); - 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++; - data = read_dev_sector(bdev, - blk * (blocksize/512), - §); - } - - 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"); - - } - - printk("\n"); - goto out_freeall; - - -out_readerr: - res = -1; -out_freeall: - kfree(label); -out_nolab: - kfree(geo); -out_nogeo: - kfree(info); -out_exit: - return res; -} |