static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode,
uint cmd_in, ulong arg)
{
int rc = 0;
struct gendisk *disk = bdev->bd_disk;
struct skd_device *skdev = disk->private_data;
void __user *p = (void *)arg;
pr_debug("%s:%s:%d %s: CMD[%s] ioctl mode 0x%x, cmd 0x%x arg %0lx\n",
skdev->name, __func__, __LINE__,
disk->disk_name, current->comm, mode, cmd_in, arg);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
switch (cmd_in) {
case SG_SET_TIMEOUT:
case SG_GET_TIMEOUT:
case SG_GET_VERSION_NUM:
rc = scsi_cmd_ioctl(disk->queue, disk, mode, cmd_in, p);
break;
case SG_IO:
rc = skd_ioctl_sg_io(skdev, mode, p);
break;
default:
rc = -ENOTTY;
break;
}
pr_debug("%s:%s:%d %s: completion rc %d\n",
skdev->name, __func__, __LINE__, disk->disk_name, rc);
return rc;
}
int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
unsigned int cmd, void __user *arg)
{
int ret;
ret = scsi_verify_blk_ioctl(bd, cmd);
if (ret < 0)
return ret;
return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg);
}
int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
unsigned int cmd, unsigned long arg)
{
unsigned long flags;
ide_driver_t *drv;
void __user *p = (void __user *)arg;
int err = 0, (*setfunc)(ide_drive_t *, int);
u8 *val;
switch (cmd) {
case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
}
switch (cmd) {
case HDIO_OBSOLETE_IDENTITY:
case HDIO_GET_IDENTITY:
if (bdev != bdev->bd_contains)
return -EINVAL;
if (drive->id_read == 0)
return -ENOMSG;
if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
return -EFAULT;
return 0;
case HDIO_GET_NICE:
return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
drive->nice0 << IDE_NICE_0 |
drive->nice1 << IDE_NICE_1 |
drive->nice2 << IDE_NICE_2,
(long __user *) arg);
#ifdef CONFIG_IDE_TASK_IOCTL
case HDIO_DRIVE_TASKFILE:
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
return -EACCES;
switch(drive->media) {
case ide_disk:
return ide_taskfile_ioctl(drive, cmd, arg);
default:
return -ENOMSG;
}
#endif /* CONFIG_IDE_TASK_IOCTL */
case HDIO_DRIVE_CMD:
if (!capable(CAP_SYS_RAWIO))
return -EACCES;
return ide_cmd_ioctl(drive, cmd, arg);
case HDIO_DRIVE_TASK:
if (!capable(CAP_SYS_RAWIO))
return -EACCES;
return ide_task_ioctl(drive, cmd, arg);
case HDIO_SCAN_HWIF:
{
hw_regs_t hw;
int args[3];
if (!capable(CAP_SYS_RAWIO)) return -EACCES;
if (copy_from_user(args, p, 3 * sizeof(int)))
return -EFAULT;
memset(&hw, 0, sizeof(hw));
ide_init_hwif_ports(&hw, (unsigned long) args[0],
(unsigned long) args[1], NULL);
hw.irq = args[2];
if (ide_register_hw(&hw, 0, NULL) == -1)
return -EIO;
return 0;
}
case HDIO_UNREGISTER_HWIF:
if (!capable(CAP_SYS_RAWIO)) return -EACCES;
/* (arg > MAX_HWIFS) checked in function */
ide_unregister(arg);
return 0;
case HDIO_SET_NICE:
if (!capable(CAP_SYS_ADMIN)) return -EACCES;
if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
return -EPERM;
drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
drv = *(ide_driver_t **)bdev->bd_disk->private_data;
if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
drive->dsc_overlap = 0;
return -EPERM;
}
drive->nice1 = (arg >> IDE_NICE_1) & 1;
return 0;
case HDIO_DRIVE_RESET:
{
unsigned long flags;
if (!capable(CAP_SYS_ADMIN)) return -EACCES;
/*
* Abort the current command on the
* group if there is one, taking
* care not to allow anything else
* to be queued and to die on the
* spot if we miss one somehow
*/
spin_lock_irqsave(&ide_lock, flags);
if (HWGROUP(drive)->resetting) {
spin_unlock_irqrestore(&ide_lock, flags);
return -EBUSY;
}
ide_abort(drive, "drive reset");
BUG_ON(HWGROUP(drive)->handler);
/* Ensure nothing gets queued after we
drop the lock. Reset will clear the busy */
HWGROUP(drive)->busy = 1;
spin_unlock_irqrestore(&ide_lock, flags);
(void) ide_do_reset(drive);
return 0;
}
case CDROMEJECT:
case CDROMCLOSETRAY:
return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p);
case HDIO_GET_BUSSTATE:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
return -EFAULT;
return 0;
case HDIO_SET_BUSSTATE:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (HWIF(drive)->busproc)
return HWIF(drive)->busproc(drive, (int)arg);
return -EOPNOTSUPP;
default:
return -EINVAL;
}
read_val:
down(&ide_setting_sem);
spin_lock_irqsave(&ide_lock, flags);
err = *val;
spin_unlock_irqrestore(&ide_lock, flags);
up(&ide_setting_sem);
return err >= 0 ? put_user(err, (long __user *)arg) : err;
set_val:
if (bdev != bdev->bd_contains)
err = -EINVAL;
else {
if (!capable(CAP_SYS_ADMIN))
err = -EACCES;
else {
down(&ide_setting_sem);
err = setfunc(drive, arg);
up(&ide_setting_sem);
}
}
return err;
}