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#ifdef CONFIG_MT_SCHED
#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include "mt_sched_drv.h"
#ifdef CONFIG_COMPAT
struct compat_ioctl_arg {
compat_int_t pid;
compat_uint_t len;
compat_uptr_t mask;
compat_uptr_t mt_mask;
};
#define COMPAT_IOCTL_SETAFFINITY _IOW(IOC_MAGIC, 0, struct compat_ioctl_arg)
#define COMPAT_IOCTL_GETAFFINITY _IOR(IOC_MAGIC, 2, struct compat_ioctl_arg)
static int compat_get_sched_allocation_data(
struct compat_ioctl_arg __user *data32,
struct ioctl_arg __user *data)
{
compat_int_t i;
compat_uint_t u;
compat_uptr_t p;
int err;
err = get_user(i, &data32->pid);
err |= put_user(i, &data->pid);
err |= get_user(u, &data32->len);
err |= put_user(u, &data->len);
err |= get_user(p, &data32->mask);
err |= put_user(compat_ptr(p), &data->mask);
err |= get_user(p, &data32->mt_mask);
err |= put_user(compat_ptr(p), &data->mt_mask);
return err;
}
static int compat_put_sched_allocation_data(
struct compat_ioctl_arg __user *data32,
struct ioctl_arg __user *data)
{
pid_t i;
unsigned int u;
unsigned long *p;
int err;
err = get_user(i, &data->pid);
err |= put_user(i, &data32->pid);
err |= get_user(u, &data->len);
err |= put_user(u, &data32->len);
err |= get_user(p, &data->mask);
err |= put_user(ptr_to_compat(p), &data32->mask);
err |= get_user(p, &data->mt_mask);
err |= put_user(ptr_to_compat(p), &data32->mt_mask);
return err;
}
long sched_ioctl_compat(struct file *filp, unsigned int cmd, unsigned long arg)
{
long ret;
if (!filp->f_op || !filp->f_op->unlocked_ioctl)
return -ENOTTY;
switch (cmd) {
case COMPAT_IOCTL_SETAFFINITY:
{
struct compat_ioctl_arg __user *data32;
struct ioctl_arg __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_sched_allocation_data(data32, data);
if (err)
return err;
return filp->f_op->unlocked_ioctl(filp, IOCTL_SETAFFINITY, (unsigned long)data);
}
case COMPAT_IOCTL_GETAFFINITY:
{
struct compat_ioctl_arg __user *data32;
struct ioctl_arg __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_sched_allocation_data(data32, data);
if (err)
return err;
ret = filp->f_op->unlocked_ioctl(filp, IOCTL_GETAFFINITY, (unsigned long)data);
err = compat_put_sched_allocation_data(data32, data);
return ret ? ret : err;
}
case IOCTL_EXITAFFINITY:
return filp->f_op->unlocked_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
default:
return -ENOIOCTLCMD;
}
}
#endif
#endif
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