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compat_ioctl: move hdio calls to block/compat_ioctl.c

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These are common to multiple block drivers, so they should
be handled by the block layer.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Arnd Bergmann 2007-10-09 13:23:55 +02:00 committed by Jens Axboe
parent 171044d449
commit 9617db085c
2 changed files with 70 additions and 60 deletions
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70
block/compat_ioctl.c
View File

@ -36,6 +36,62 @@ static int compat_put_u64(unsigned long arg, u64 val)
return put_user(val, (compat_u64 __user *)compat_ptr(arg));
}
struct compat_hd_geometry {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
u32 start;
};
static int compat_hdio_getgeo(struct gendisk *disk, struct block_device *bdev,
struct compat_hd_geometry __user *ugeo)
{
struct hd_geometry geo;
int ret;
if (!ugeo)
return -EINVAL;
if (!disk->fops->getgeo)
return -ENOTTY;
/*
* We need to set the startsect first, the driver may
* want to override it.
*/
geo.start = get_start_sect(bdev);
ret = disk->fops->getgeo(bdev, &geo);
if (ret)
return ret;
ret = copy_to_user(ugeo, &geo, 4);
ret |= __put_user(geo.start, &ugeo->start);
if (ret)
ret = -EFAULT;
return ret;
}
static int compat_hdio_ioctl(struct inode *inode, struct file *file,
struct gendisk *disk, unsigned int cmd, unsigned long arg)
{
mm_segment_t old_fs = get_fs();
unsigned long kval;
unsigned int __user *uvp;
int error;
set_fs(KERNEL_DS);
error = blkdev_driver_ioctl(inode, file, disk,
cmd, (unsigned long)(&kval));
set_fs(old_fs);
if (error == 0) {
uvp = compat_ptr(arg);
if (put_user(kval, uvp))
error = -EFAULT;
}
return error;
}
#define BLKBSZGET_32 _IOR(0x12, 112, int)
#define BLKBSZSET_32 _IOW(0x12, 113, int)
#define BLKGETSIZE64_32 _IOR(0x12, 114, int)
@ -93,6 +149,18 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
int ret;
switch (arg) {
case HDIO_GET_UNMASKINTR:
case HDIO_GET_MULTCOUNT:
case HDIO_GET_KEEPSETTINGS:
case HDIO_GET_32BIT:
case HDIO_GET_NOWERR:
case HDIO_GET_DMA:
case HDIO_GET_NICE:
case HDIO_GET_WCACHE:
case HDIO_GET_ACOUSTIC:
case HDIO_GET_ADDRESS:
case HDIO_GET_BUSSTATE:
return compat_hdio_ioctl(inode, file, disk, cmd, arg);
/*
* No handler required for the ones below, we just need to
* convert arg to a 64 bit pointer.
@ -266,6 +334,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
struct gendisk *disk = bdev->bd_disk;
switch (cmd) {
case HDIO_GETGEO:
return compat_hdio_getgeo(disk, bdev, compat_ptr(arg));
case BLKFLSBUF:
case BLKROSET:
/*

60
fs/compat_ioctl.c
View File

@ -21,7 +21,6 @@
#include <linux/if.h>
#include <linux/if_bridge.h>
#include <linux/slab.h>
#include <linux/hdreg.h>
#include <linux/raid/md.h>
#include <linux/kd.h>
#include <linux/dirent.h>
@ -667,53 +666,6 @@ out:
#endif
#ifdef CONFIG_BLOCK
struct hd_geometry32 {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
u32 start;
};
static int hdio_getgeo(unsigned int fd, unsigned int cmd, unsigned long arg)
{
mm_segment_t old_fs = get_fs();
struct hd_geometry geo;
struct hd_geometry32 __user *ugeo;
int err;
set_fs (KERNEL_DS);
err = sys_ioctl(fd, HDIO_GETGEO, (unsigned long)&geo);
set_fs (old_fs);
ugeo = compat_ptr(arg);
if (!err) {
err = copy_to_user (ugeo, &geo, 4);
err |= __put_user (geo.start, &ugeo->start);
if (err)
err = -EFAULT;
}
return err;
}
static int hdio_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
{
mm_segment_t old_fs = get_fs();
unsigned long kval;
unsigned int __user *uvp;
int error;
set_fs(KERNEL_DS);
error = sys_ioctl(fd, cmd, (long)&kval);
set_fs(old_fs);
if(error == 0) {
uvp = compat_ptr(arg);
if(put_user(kval, uvp))
error = -EFAULT;
}
return error;
}
typedef struct sg_io_hdr32 {
compat_int_t interface_id; /* [i] 'S' for SCSI generic (required) */
compat_int_t dxfer_direction; /* [i] data transfer direction */
@ -3208,19 +3160,7 @@ HANDLE_IOCTL(SIOCGSTAMP, do_siocgstamp)
HANDLE_IOCTL(SIOCGSTAMPNS, do_siocgstampns)
#endif
#ifdef CONFIG_BLOCK
HANDLE_IOCTL(HDIO_GETGEO, hdio_getgeo)
HANDLE_IOCTL(BLKPG, blkpg_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_UNMASKINTR, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_MULTCOUNT, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_KEEPSETTINGS, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_32BIT, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_NOWERR, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_DMA, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_NICE, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_WCACHE, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_ACOUSTIC, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_ADDRESS, hdio_ioctl_trans)
HANDLE_IOCTL(HDIO_GET_BUSSTATE, hdio_ioctl_trans)
HANDLE_IOCTL(FDSETPRM32, fd_ioctl_trans)
HANDLE_IOCTL(FDDEFPRM32, fd_ioctl_trans)
HANDLE_IOCTL(FDGETPRM32, fd_ioctl_trans)