/*
- * File...........: linux/fs/partitions/ibm.c
+ * 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 "ibm.h"
/*
- * compute the block number from a
+ * compute the block number from a
* cyl-cyl-head-head structure
*/
static inline int
ptr->hh * geo->sectors;
}
-
/*
- * compute the block number from a
+ * compute the block number from a
* cyl-cyl-head-head-block structure
*/
static inline int
/*
*/
-int
+int
ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
{
- int blocksize, offset, size;
+ int blocksize, offset, size,res;
loff_t i_size;
dasd_information_t *info;
struct hd_geometry *geo;
unsigned char *data;
Sector sect;
+ res = 0;
blocksize = bdev_hardsect_size(bdev);
if (blocksize <= 0)
- return 0;
+ goto out_exit;
i_size = i_size_read(bdev->bd_inode);
if (i_size == 0)
- return 0;
+ goto out_exit;
if ((info = kmalloc(sizeof(dasd_information_t), GFP_KERNEL)) == NULL)
- goto out_noinfo;
+ goto out_exit;
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;
+ goto out_freeall;
/*
* Get volume label, extract name and type.
EBCASC(type, 4);
EBCASC(name, 6);
+ res = 1;
+
/*
* Three different types: CMS1, VOL1 and LNX1/unlabeled
*/
/* OK, we got valid partition data */
offset = cchh2blk(&f1.DS1EXT1.llimit, geo);
- size = cchh2blk(&f1.DS1EXT1.ulimit, 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));
+ put_partition(state, counter + 1,
+ offset * (blocksize >> 9),
+ size * (blocksize >> 9));
counter++;
blk++;
}
+ if (!data)
+ /* Are we not supposed to report this ? */
+ goto out_readerr;
} else {
/*
* Old style LNX1 or unlabeled disk
offset = (info->label_block + 1);
size = i_size >> 9;
put_partition(state, 1, offset*(blocksize >> 9),
- size-offset*(blocksize >> 9));
+ size-offset*(blocksize >> 9));
}
printk("\n");
- kfree(label);
- kfree(geo);
- kfree(info);
- return 1;
-
+ goto out_freeall;
+
+
out_readerr:
-out_noioctl:
+ res = -1;
+out_freeall:
kfree(label);
out_nolab:
kfree(geo);
out_nogeo:
kfree(info);
-out_noinfo:
- return 0;
+out_exit:
+ return res;
}