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Code Releases Activity

o Some ioctl() commands.

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This commit is contained in:
Steven Whitehouse 2001-09-13 14:01:13 +00:00
parent e8cd263509
commit f34029a1ee
1 changed files with 52 additions and 10 deletions
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62
driver/device-mapper/dm.c
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@ -35,6 +35,8 @@
#define DEVICE_OFF(d) /* do-nothing */
#include <linux/blk.h>
#include <linux/blkpg.h>
#include <linux/hdreg.h>
#define MAX_DEVICES 64
#define DEFAULT_READ_AHEAD 64
@ -123,7 +125,7 @@ static void dm_exit(void)
/*
* block device functions
*/
static int blk_open(struct inode *inode, struct file *file)
static int dm_blk_open(struct inode *inode, struct file *file)
{
int minor = MINOR(inode->i_rdev);
struct mapped_device *md;
@ -146,7 +148,7 @@ static int blk_open(struct inode *inode, struct file *file)
return 0;
}
static int blk_close(struct inode *inode, struct file *file)
static int dm_blk_close(struct inode *inode, struct file *file)
{
int minor = MINOR(inode->i_rdev);
struct mapped_device *md;
@ -169,18 +171,55 @@ static int blk_close(struct inode *inode, struct file *file)
return 0;
}
static int blk_ioctl(struct inode *inode, struct file *file,
#define VOLUME_SIZE(minor) ((_block_size[(minor)] << 10) /
_hardsect_size[(minor)])
static int dm_blk_ioctl(struct inode *inode, struct file *file,
uint command, ulong a)
{
/* FIXME: check in the latest Rubini that all expected ioctl's
are supported */
int minor = MINOR(inode->i_rdev);
long size;
if (minor >= MAX_DEVICES)
return -ENXIO;
switch (command) {
case BLKSSZGET:
case BLKROGET:
case BLKROSET:
#if 0
case BLKELVSET:
case BLKELVGET:
#endif
return blk_ioctl(inode->i_dev, command, a);
break;
case HDIO_GETGEO:
{
struct hd_geometry tmp = { heads: 64, sectors: 32 };
tmp.cylinders = VOLUME_SIZE(minor) / tmp.heads /
tmp.sectors;
if (copy_to_user((char *)a, &tmp, sizeof(tmp)))
return -EFAULT;
break;
}
case HDIO_GETGEO_BIG:
{
struct hd_big_geometry tmp = { heads: 64, sectors: 32 };
tmp.cylinders = VOLUME_SIZE(minor) / tmp.heads /
tmp.sectors;
if (copy_to_user((char *)a, &tmp, sizeof(tmp)))
return -EFAULT;
break;
}
case BLKGETSIZE:
size = _block_size[minor] * 1024 / _hardsect_size[minor];
size = VOLUME_SIZE(minor);
if (copy_to_user((void *) a, &size, sizeof(long)))
return -EFAULT;
break;
@ -206,6 +245,9 @@ static int blk_ioctl(struct inode *inode, struct file *file,
case BLKRRPART:
return -EINVAL;
#if 0
case LVM_BMAP: /* we need some method for LILO to use */
#endif
default:
printk(KERN_WARNING "%s - unknown block ioctl %d",
@ -802,9 +844,9 @@ void dm_suspend(struct mapped_device *md)
struct block_device_operations dm_blk_dops = {
open: blk_open,
release: blk_close,
ioctl: blk_ioctl
open: dm_blk_open,
release: dm_blk_close,
ioctl: dm_blk_ioctl
};
/*