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dm ioctl: move compat code

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Move compat_ioctl handling into dm-ioctl.c.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Milan Broz 2008-02-08 02:09:56 +00:00 committed by Alasdair G Kergon
parent 27238b2bea
commit 76c072b48e
3 changed files with 15 additions and 68 deletions
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15
drivers/md/dm-ioctl.c
View File

@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/dm-ioctl.h>
#include <linux/hdreg.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
@ -1350,10 +1351,10 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl **param)
{
struct dm_ioctl tmp, *dmi;
if (copy_from_user(&tmp, user, sizeof(tmp)))
if (copy_from_user(&tmp, user, sizeof(tmp) - sizeof(tmp.data)))
return -EFAULT;
if (tmp.data_size < sizeof(tmp))
if (tmp.data_size < (sizeof(tmp) - sizeof(tmp.data)))
return -EINVAL;
dmi = vmalloc(tmp.data_size);
@ -1474,8 +1475,18 @@ static long dm_ctl_ioctl(struct file *file, uint command, ulong u)
return (long)ctl_ioctl(command, (struct dm_ioctl __user *)u);
}
#ifdef CONFIG_COMPAT
static long dm_compat_ctl_ioctl(struct file *file, uint command, ulong u)
{
return (long)dm_ctl_ioctl(file, command, (ulong) compat_ptr(u));
}
#else
#define dm_compat_ctl_ioctl NULL
#endif
static const struct file_operations _ctl_fops = {
.unlocked_ioctl = dm_ctl_ioctl,
.compat_ioctl = dm_compat_ctl_ioctl,
.owner = THIS_MODULE,
};

34
fs/compat_ioctl.c
View File

@ -78,7 +78,6 @@
#include <linux/mii.h>
#include <linux/if_bonding.h>
#include <linux/watchdog.h>
#include <linux/dm-ioctl.h>
#include <linux/soundcard.h>
#include <linux/lp.h>
@ -1993,39 +1992,6 @@ COMPATIBLE_IOCTL(STOP_ARRAY_RO)
COMPATIBLE_IOCTL(RESTART_ARRAY_RW)
COMPATIBLE_IOCTL(GET_BITMAP_FILE)
ULONG_IOCTL(SET_BITMAP_FILE)
/* DM */
COMPATIBLE_IOCTL(DM_VERSION_32)
COMPATIBLE_IOCTL(DM_REMOVE_ALL_32)
COMPATIBLE_IOCTL(DM_LIST_DEVICES_32)
COMPATIBLE_IOCTL(DM_DEV_CREATE_32)
COMPATIBLE_IOCTL(DM_DEV_REMOVE_32)
COMPATIBLE_IOCTL(DM_DEV_RENAME_32)
COMPATIBLE_IOCTL(DM_DEV_SUSPEND_32)
COMPATIBLE_IOCTL(DM_DEV_STATUS_32)
COMPATIBLE_IOCTL(DM_DEV_WAIT_32)
COMPATIBLE_IOCTL(DM_TABLE_LOAD_32)
COMPATIBLE_IOCTL(DM_TABLE_CLEAR_32)
COMPATIBLE_IOCTL(DM_TABLE_DEPS_32)
COMPATIBLE_IOCTL(DM_TABLE_STATUS_32)
COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32)
COMPATIBLE_IOCTL(DM_TARGET_MSG_32)
COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY_32)
COMPATIBLE_IOCTL(DM_VERSION)
COMPATIBLE_IOCTL(DM_REMOVE_ALL)
COMPATIBLE_IOCTL(DM_LIST_DEVICES)
COMPATIBLE_IOCTL(DM_DEV_CREATE)
COMPATIBLE_IOCTL(DM_DEV_REMOVE)
COMPATIBLE_IOCTL(DM_DEV_RENAME)
COMPATIBLE_IOCTL(DM_DEV_SUSPEND)
COMPATIBLE_IOCTL(DM_DEV_STATUS)
COMPATIBLE_IOCTL(DM_DEV_WAIT)
COMPATIBLE_IOCTL(DM_TABLE_LOAD)
COMPATIBLE_IOCTL(DM_TABLE_CLEAR)
COMPATIBLE_IOCTL(DM_TABLE_DEPS)
COMPATIBLE_IOCTL(DM_TABLE_STATUS)
COMPATIBLE_IOCTL(DM_LIST_VERSIONS)
COMPATIBLE_IOCTL(DM_TARGET_MSG)
COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY)
/* Big K */
COMPATIBLE_IOCTL(PIO_FONT)
COMPATIBLE_IOCTL(GIO_FONT)

34
include/linux/dm-ioctl.h
View File

@ -232,36 +232,6 @@ enum {
DM_DEV_SET_GEOMETRY_CMD
};
/*
* The dm_ioctl struct passed into the ioctl is just the header
* on a larger chunk of memory. On x86-64 and other
* architectures the dm-ioctl struct will be padded to an 8 byte
* boundary so the size will be different, which would change the
* ioctl code - yes I really messed up. This hack forces these
* architectures to have the correct ioctl code.
*/
#ifdef CONFIG_COMPAT
typedef char ioctl_struct[308];
#define DM_VERSION_32 _IOWR(DM_IOCTL, DM_VERSION_CMD, ioctl_struct)
#define DM_REMOVE_ALL_32 _IOWR(DM_IOCTL, DM_REMOVE_ALL_CMD, ioctl_struct)
#define DM_LIST_DEVICES_32 _IOWR(DM_IOCTL, DM_LIST_DEVICES_CMD, ioctl_struct)
#define DM_DEV_CREATE_32 _IOWR(DM_IOCTL, DM_DEV_CREATE_CMD, ioctl_struct)
#define DM_DEV_REMOVE_32 _IOWR(DM_IOCTL, DM_DEV_REMOVE_CMD, ioctl_struct)
#define DM_DEV_RENAME_32 _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD, ioctl_struct)
#define DM_DEV_SUSPEND_32 _IOWR(DM_IOCTL, DM_DEV_SUSPEND_CMD, ioctl_struct)
#define DM_DEV_STATUS_32 _IOWR(DM_IOCTL, DM_DEV_STATUS_CMD, ioctl_struct)
#define DM_DEV_WAIT_32 _IOWR(DM_IOCTL, DM_DEV_WAIT_CMD, ioctl_struct)
#define DM_TABLE_LOAD_32 _IOWR(DM_IOCTL, DM_TABLE_LOAD_CMD, ioctl_struct)
#define DM_TABLE_CLEAR_32 _IOWR(DM_IOCTL, DM_TABLE_CLEAR_CMD, ioctl_struct)
#define DM_TABLE_DEPS_32 _IOWR(DM_IOCTL, DM_TABLE_DEPS_CMD, ioctl_struct)
#define DM_TABLE_STATUS_32 _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct)
#define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct)
#define DM_TARGET_MSG_32 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, ioctl_struct)
#define DM_DEV_SET_GEOMETRY_32 _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, ioctl_struct)
#endif
#define DM_IOCTL 0xfd
#define DM_VERSION _IOWR(DM_IOCTL, DM_VERSION_CMD, struct dm_ioctl)
@ -286,9 +256,9 @@ typedef char ioctl_struct[308];
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
#define DM_VERSION_MINOR 12
#define DM_VERSION_MINOR 13
#define DM_VERSION_PATCHLEVEL 0
#define DM_VERSION_EXTRA "-ioctl (2007-10-02)"
#define DM_VERSION_EXTRA "-ioctl (2007-10-18)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */