static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int len = 0, dtype;
int dev = iminor(file->f_dentry->d_inode);
long ret = -EINVAL;
void __user *p = (void __user *)arg;
if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) {
/*
* Have to validate the address given by the process.
*/
len = _SIOC_SIZE(cmd);
if (len < 1 || len > 65536 || !p)
return -EFAULT;
if (_SIOC_DIR(cmd) & _SIOC_WRITE)
if (!access_ok(VERIFY_READ, p, len))
return -EFAULT;
if (_SIOC_DIR(cmd) & _SIOC_READ)
if (!access_ok(VERIFY_WRITE, p, len))
return -EFAULT;
}
DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
if (cmd == OSS_GETVERSION)
return __put_user(SOUND_VERSION, (int __user *)p);
lock_kernel();
if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */
(dev & 0x0f) != SND_DEV_CTL) {
dtype = dev & 0x0f;
switch (dtype) {
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
ret = sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
cmd, p);
break;
default:
ret = sound_mixer_ioctl(dev >> 4, cmd, p);
break;
}
unlock_kernel();
return ret;
}
static int sound_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
int err, len = 0, dtype;
int dev = MINOR(inode->i_rdev);
if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) {
/*
* Have to validate the address given by the process.
*/
len = _SIOC_SIZE(cmd);
if (len < 1 || len > 65536 || arg == 0)
return -EFAULT;
if (_SIOC_DIR(cmd) & _SIOC_WRITE)
if ((err = verify_area(VERIFY_READ, (void *)arg, len)) < 0)
return err;
if (_SIOC_DIR(cmd) & _SIOC_READ)
if ((err = verify_area(VERIFY_WRITE, (void *)arg, len)) < 0)
return err;
}
DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
if (cmd == OSS_GETVERSION)
return __put_user(SOUND_VERSION, (int *)arg);
if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */
(dev & 0x0f) != SND_DEV_CTL) {
dtype = dev & 0x0f;
switch (dtype) {
#ifdef CONFIG_AUDIO
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
return sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
cmd, (caddr_t)arg);
#endif
default:
return sound_mixer_ioctl(dev >> 4, cmd, (caddr_t)arg);
}
}
