Each of these drivers has a copy of the same trivial helper function to convert the pointer argument and then call the native ioctl handler.
We now have a generic implementation of that, so use it.
Acked-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Acked-by: Michael S. Tsirkin mst@redhat.com Acked-by: David S. Miller davem@davemloft.net Reviewed-by: Jarkko Sakkinen jarkko.sakkinen@linux.intel.com Reviewed-by: Jason Gunthorpe jgg@mellanox.com Reviewed-by: Jiri Kosina jkosina@suse.cz Reviewed-by: Stefan Hajnoczi stefanha@redhat.com Reviewed-by: Cornelia Huck cohuck@redhat.com Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/char/ppdev.c | 12 +--------- drivers/char/tpm/tpm_vtpm_proxy.c | 12 +--------- drivers/firewire/core-cdev.c | 12 +--------- drivers/hid/usbhid/hiddev.c | 11 +-------- drivers/hwtracing/stm/core.c | 12 +--------- drivers/misc/mei/main.c | 22 +---------------- drivers/mtd/ubi/cdev.c | 36 +++------------------------- drivers/net/tap.c | 12 +--------- drivers/staging/pi433/pi433_if.c | 12 +--------- drivers/usb/core/devio.c | 16 +------------ drivers/vfio/vfio.c | 39 +++---------------------------- drivers/vhost/net.c | 12 +--------- drivers/vhost/scsi.c | 12 +--------- drivers/vhost/test.c | 12 +--------- drivers/vhost/vsock.c | 12 +--------- fs/ceph/dir.c | 2 +- fs/ceph/file.c | 2 +- fs/ceph/super.h | 9 ------- fs/fat/file.c | 13 +---------- 19 files changed, 22 insertions(+), 248 deletions(-)
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index c86f18aa8985..e02fe2621b94 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -670,14 +670,6 @@ static long pp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return ret; }
-#ifdef CONFIG_COMPAT -static long pp_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - return pp_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); -} -#endif - static int pp_open(struct inode *inode, struct file *file) { unsigned int minor = iminor(inode); @@ -786,9 +778,7 @@ static const struct file_operations pp_fops = { .write = pp_write, .poll = pp_poll, .unlocked_ioctl = pp_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = pp_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = pp_open, .release = pp_release, }; diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c index 2f6e087ec496..91c772e38bb5 100644 --- a/drivers/char/tpm/tpm_vtpm_proxy.c +++ b/drivers/char/tpm/tpm_vtpm_proxy.c @@ -670,20 +670,10 @@ static long vtpmx_fops_ioctl(struct file *f, unsigned int ioctl, } }
-#ifdef CONFIG_COMPAT -static long vtpmx_fops_compat_ioctl(struct file *f, unsigned int ioctl, - unsigned long arg) -{ - return vtpmx_fops_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations vtpmx_fops = { .owner = THIS_MODULE, .unlocked_ioctl = vtpmx_fops_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vtpmx_fops_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .llseek = noop_llseek, };
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 1da7ba18d399..c777088f5828 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1646,14 +1646,6 @@ static long fw_device_op_ioctl(struct file *file, return dispatch_ioctl(file->private_data, cmd, (void __user *)arg); }
-#ifdef CONFIG_COMPAT -static long fw_device_op_compat_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) -{ - return dispatch_ioctl(file->private_data, cmd, compat_ptr(arg)); -} -#endif - static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma) { struct client *client = file->private_data; @@ -1795,7 +1787,5 @@ const struct file_operations fw_device_ops = { .mmap = fw_device_op_mmap, .release = fw_device_op_release, .poll = fw_device_op_poll, -#ifdef CONFIG_COMPAT - .compat_ioctl = fw_device_op_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, }; diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 1f9bc4483465..e421cdf2d1a4 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -854,13 +854,6 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return r; }
-#ifdef CONFIG_COMPAT -static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - return hiddev_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations hiddev_fops = { .owner = THIS_MODULE, .read = hiddev_read, @@ -870,9 +863,7 @@ static const struct file_operations hiddev_fops = { .release = hiddev_release, .unlocked_ioctl = hiddev_ioctl, .fasync = hiddev_fasync, -#ifdef CONFIG_COMPAT - .compat_ioctl = hiddev_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .llseek = noop_llseek, };
diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c index 603b83ac5085..2712e699ba08 100644 --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -832,23 +832,13 @@ stm_char_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return err; }
-#ifdef CONFIG_COMPAT -static long -stm_char_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - return stm_char_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); -} -#else -#define stm_char_compat_ioctl NULL -#endif - static const struct file_operations stm_fops = { .open = stm_char_open, .release = stm_char_release, .write = stm_char_write, .mmap = stm_char_mmap, .unlocked_ioctl = stm_char_ioctl, - .compat_ioctl = stm_char_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .llseek = no_llseek, };
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 7310b476323c..133fa8cbb1c8 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -532,24 +532,6 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) return rets; }
-/** - * mei_compat_ioctl - the compat IOCTL function - * - * @file: pointer to file structure - * @cmd: ioctl command - * @data: pointer to mei message structure - * - * Return: 0 on success , <0 on error - */ -#ifdef CONFIG_COMPAT -static long mei_compat_ioctl(struct file *file, - unsigned int cmd, unsigned long data) -{ - return mei_ioctl(file, cmd, (unsigned long)compat_ptr(data)); -} -#endif - - /** * mei_poll - the poll function * @@ -898,9 +880,7 @@ static const struct file_operations mei_fops = { .owner = THIS_MODULE, .read = mei_read, .unlocked_ioctl = mei_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = mei_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = mei_open, .release = mei_release, .write = mei_write, diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 1b77fff9f892..cc9a28cf9d82 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -1078,36 +1078,6 @@ static long ctrl_cdev_ioctl(struct file *file, unsigned int cmd, return err; }
-#ifdef CONFIG_COMPAT -static long vol_cdev_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - unsigned long translated_arg = (unsigned long)compat_ptr(arg); - - return vol_cdev_ioctl(file, cmd, translated_arg); -} - -static long ubi_cdev_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - unsigned long translated_arg = (unsigned long)compat_ptr(arg); - - return ubi_cdev_ioctl(file, cmd, translated_arg); -} - -static long ctrl_cdev_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - unsigned long translated_arg = (unsigned long)compat_ptr(arg); - - return ctrl_cdev_ioctl(file, cmd, translated_arg); -} -#else -#define vol_cdev_compat_ioctl NULL -#define ubi_cdev_compat_ioctl NULL -#define ctrl_cdev_compat_ioctl NULL -#endif - /* UBI volume character device operations */ const struct file_operations ubi_vol_cdev_operations = { .owner = THIS_MODULE, @@ -1118,7 +1088,7 @@ const struct file_operations ubi_vol_cdev_operations = { .write = vol_cdev_write, .fsync = vol_cdev_fsync, .unlocked_ioctl = vol_cdev_ioctl, - .compat_ioctl = vol_cdev_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, };
/* UBI character device operations */ @@ -1126,13 +1096,13 @@ const struct file_operations ubi_cdev_operations = { .owner = THIS_MODULE, .llseek = no_llseek, .unlocked_ioctl = ubi_cdev_ioctl, - .compat_ioctl = ubi_cdev_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, };
/* UBI control character device operations */ const struct file_operations ubi_ctrl_cdev_operations = { .owner = THIS_MODULE, .unlocked_ioctl = ctrl_cdev_ioctl, - .compat_ioctl = ctrl_cdev_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .llseek = no_llseek, }; diff --git a/drivers/net/tap.c b/drivers/net/tap.c index 3ae70c7e6860..a6d63665ad03 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -1123,14 +1123,6 @@ static long tap_ioctl(struct file *file, unsigned int cmd, } }
-#ifdef CONFIG_COMPAT -static long tap_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - return tap_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations tap_fops = { .owner = THIS_MODULE, .open = tap_open, @@ -1140,9 +1132,7 @@ static const struct file_operations tap_fops = { .poll = tap_poll, .llseek = no_llseek, .unlocked_ioctl = tap_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = tap_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, };
static int tap_get_user_xdp(struct tap_queue *q, struct xdp_buff *xdp) diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c index 40c6f4e7632f..313d22f6210f 100644 --- a/drivers/staging/pi433/pi433_if.c +++ b/drivers/staging/pi433/pi433_if.c @@ -928,16 +928,6 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return 0; }
-#ifdef CONFIG_COMPAT -static long -pi433_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - return pi433_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); -} -#else -#define pi433_compat_ioctl NULL -#endif /* CONFIG_COMPAT */ - /*-------------------------------------------------------------------------*/
static int pi433_open(struct inode *inode, struct file *filp) @@ -1094,7 +1084,7 @@ static const struct file_operations pi433_fops = { .write = pi433_write, .read = pi433_read, .unlocked_ioctl = pi433_ioctl, - .compat_ioctl = pi433_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .open = pi433_open, .release = pi433_release, .llseek = no_llseek, diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 3f899552f6e3..646ffa13c1fc 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -2685,18 +2685,6 @@ static long usbdev_ioctl(struct file *file, unsigned int cmd, return ret; }
-#ifdef CONFIG_COMPAT -static long usbdev_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - int ret; - - ret = usbdev_do_ioctl(file, cmd, compat_ptr(arg)); - - return ret; -} -#endif - /* No kernel lock - fine */ static __poll_t usbdev_poll(struct file *file, struct poll_table_struct *wait) @@ -2720,9 +2708,7 @@ const struct file_operations usbdev_file_operations = { .read = usbdev_read, .poll = usbdev_poll, .unlocked_ioctl = usbdev_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = usbdev_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .mmap = usbdev_mmap, .open = usbdev_open, .release = usbdev_release, diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 388597930b64..c8482624ca34 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1184,15 +1184,6 @@ static long vfio_fops_unl_ioctl(struct file *filep, return ret; }
-#ifdef CONFIG_COMPAT -static long vfio_fops_compat_ioctl(struct file *filep, - unsigned int cmd, unsigned long arg) -{ - arg = (unsigned long)compat_ptr(arg); - return vfio_fops_unl_ioctl(filep, cmd, arg); -} -#endif /* CONFIG_COMPAT */ - static int vfio_fops_open(struct inode *inode, struct file *filep) { struct vfio_container *container; @@ -1275,9 +1266,7 @@ static const struct file_operations vfio_fops = { .read = vfio_fops_read, .write = vfio_fops_write, .unlocked_ioctl = vfio_fops_unl_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vfio_fops_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .mmap = vfio_fops_mmap, };
@@ -1556,15 +1545,6 @@ static long vfio_group_fops_unl_ioctl(struct file *filep, return ret; }
-#ifdef CONFIG_COMPAT -static long vfio_group_fops_compat_ioctl(struct file *filep, - unsigned int cmd, unsigned long arg) -{ - arg = (unsigned long)compat_ptr(arg); - return vfio_group_fops_unl_ioctl(filep, cmd, arg); -} -#endif /* CONFIG_COMPAT */ - static int vfio_group_fops_open(struct inode *inode, struct file *filep) { struct vfio_group *group; @@ -1620,9 +1600,7 @@ static int vfio_group_fops_release(struct inode *inode, struct file *filep) static const struct file_operations vfio_group_fops = { .owner = THIS_MODULE, .unlocked_ioctl = vfio_group_fops_unl_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vfio_group_fops_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = vfio_group_fops_open, .release = vfio_group_fops_release, }; @@ -1687,24 +1665,13 @@ static int vfio_device_fops_mmap(struct file *filep, struct vm_area_struct *vma) return device->ops->mmap(device->device_data, vma); }
-#ifdef CONFIG_COMPAT -static long vfio_device_fops_compat_ioctl(struct file *filep, - unsigned int cmd, unsigned long arg) -{ - arg = (unsigned long)compat_ptr(arg); - return vfio_device_fops_unl_ioctl(filep, cmd, arg); -} -#endif /* CONFIG_COMPAT */ - static const struct file_operations vfio_device_fops = { .owner = THIS_MODULE, .release = vfio_device_fops_release, .read = vfio_device_fops_read, .write = vfio_device_fops_write, .unlocked_ioctl = vfio_device_fops_unl_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vfio_device_fops_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .mmap = vfio_device_fops_mmap, };
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 1a2dd53caade..e158159671fa 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1751,14 +1751,6 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl, } }
-#ifdef CONFIG_COMPAT -static long vhost_net_compat_ioctl(struct file *f, unsigned int ioctl, - unsigned long arg) -{ - return vhost_net_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); -} -#endif - static ssize_t vhost_net_chr_read_iter(struct kiocb *iocb, struct iov_iter *to) { struct file *file = iocb->ki_filp; @@ -1794,9 +1786,7 @@ static const struct file_operations vhost_net_fops = { .write_iter = vhost_net_chr_write_iter, .poll = vhost_net_chr_poll, .unlocked_ioctl = vhost_net_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vhost_net_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = vhost_net_open, .llseek = noop_llseek, }; diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index a9caf1bc3c3e..0b949a14bce3 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -1727,21 +1727,11 @@ vhost_scsi_ioctl(struct file *f, } }
-#ifdef CONFIG_COMPAT -static long vhost_scsi_compat_ioctl(struct file *f, unsigned int ioctl, - unsigned long arg) -{ - return vhost_scsi_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations vhost_scsi_fops = { .owner = THIS_MODULE, .release = vhost_scsi_release, .unlocked_ioctl = vhost_scsi_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vhost_scsi_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = vhost_scsi_open, .llseek = noop_llseek, }; diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c index 7804869c6a31..ec58a3330e5e 100644 --- a/drivers/vhost/test.c +++ b/drivers/vhost/test.c @@ -302,21 +302,11 @@ static long vhost_test_ioctl(struct file *f, unsigned int ioctl, } }
-#ifdef CONFIG_COMPAT -static long vhost_test_compat_ioctl(struct file *f, unsigned int ioctl, - unsigned long arg) -{ - return vhost_test_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations vhost_test_fops = { .owner = THIS_MODULE, .release = vhost_test_release, .unlocked_ioctl = vhost_test_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vhost_test_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = vhost_test_open, .llseek = noop_llseek, }; diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index 9f57736fe15e..706c5e8e01ee 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -761,23 +761,13 @@ static long vhost_vsock_dev_ioctl(struct file *f, unsigned int ioctl, } }
-#ifdef CONFIG_COMPAT -static long vhost_vsock_dev_compat_ioctl(struct file *f, unsigned int ioctl, - unsigned long arg) -{ - return vhost_vsock_dev_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); -} -#endif - static const struct file_operations vhost_vsock_fops = { .owner = THIS_MODULE, .open = vhost_vsock_dev_open, .release = vhost_vsock_dev_release, .llseek = noop_llseek, .unlocked_ioctl = vhost_vsock_dev_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = vhost_vsock_dev_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, };
static struct miscdevice vhost_vsock_misc = { diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 401c17d36b71..811f45badc10 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1808,7 +1808,7 @@ const struct file_operations ceph_dir_fops = { .open = ceph_open, .release = ceph_release, .unlocked_ioctl = ceph_ioctl, - .compat_ioctl = ceph_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .fsync = ceph_fsync, .lock = ceph_lock, .flock = ceph_flock, diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 9e8e4bfe1d50..6092ccea50d2 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -2162,7 +2162,7 @@ const struct file_operations ceph_file_fops = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .unlocked_ioctl = ceph_ioctl, - .compat_ioctl = ceph_compat_ioctl, + .compat_ioctl = compat_ptr_ioctl, .fallocate = ceph_fallocate, .copy_file_range = ceph_copy_file_range, }; diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 87bf9db76f98..10248cd71dd2 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -1124,15 +1124,6 @@ extern void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl);
/* ioctl.c */ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); -static inline long -ceph_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ -#ifdef CONFIG_COMPAT - return ceph_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); -#else - return -ENOTTY; -#endif -}
/* export.c */ extern const struct export_operations ceph_export_ops; diff --git a/fs/fat/file.c b/fs/fat/file.c index 4614c0ba5f1c..bdc4503c00a3 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -172,15 +172,6 @@ long fat_generic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } }
-#ifdef CONFIG_COMPAT -static long fat_generic_compat_ioctl(struct file *filp, unsigned int cmd, - unsigned long arg) - -{ - return fat_generic_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); -} -#endif - static int fat_file_release(struct inode *inode, struct file *filp) { if ((filp->f_mode & FMODE_WRITE) && @@ -215,9 +206,7 @@ const struct file_operations fat_file_operations = { .mmap = generic_file_mmap, .release = fat_file_release, .unlocked_ioctl = fat_generic_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = fat_generic_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .fsync = fat_file_fsync, .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write,