1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/backing-dev.h>
17 			  struct blkpg_partition __user *upart, int op)  in blkpg_do_ioctl()  argument
19 	struct gendisk *disk = bdev->bd_disk;  in blkpg_do_ioctl()
24 		return -EACCES;  in blkpg_do_ioctl()
26 		return -EFAULT;  in blkpg_do_ioctl()
28 		return -EINVAL;  in blkpg_do_ioctl()
31 		return -EINVAL;  in blkpg_do_ioctl()
33 	if (op == BLKPG_DEL_PARTITION)  in blkpg_do_ioctl()
37 		return -EINVAL;  in blkpg_do_ioctl()
38 	/* Check that the partition is aligned to the block size */  in blkpg_do_ioctl()
40 		return -EINVAL;  in blkpg_do_ioctl()
45 	switch (op) {  in blkpg_do_ioctl()
51 		return -EINVAL;  in blkpg_do_ioctl()
59 	int op;  in blkpg_ioctl()  local
61 	if (get_user(op, &arg->op) || get_user(udata, &arg->data))  in blkpg_ioctl()
62 		return -EFAULT;  in blkpg_ioctl()
64 	return blkpg_do_ioctl(bdev, udata, op);  in blkpg_ioctl()
69 	compat_int_t op;  member
79 	int op;  in compat_blkpg_ioctl()  local
81 	if (get_user(op, &arg->op) || get_user(udata, &arg->data))  in compat_blkpg_ioctl()
82 		return -EFAULT;  in compat_blkpg_ioctl()
84 	return blkpg_do_ioctl(bdev, compat_ptr(udata), op);  in compat_blkpg_ioctl()
93 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_discard()
97 		return -EBADF;  in blk_ioctl_discard()
100 		return -EOPNOTSUPP;  in blk_ioctl_discard()
103 		return -EFAULT;  in blk_ioctl_discard()
109 		return -EINVAL;  in blk_ioctl_discard()
111 		return -EINVAL;  in blk_ioctl_discard()
114 		return -EINVAL;  in blk_ioctl_discard()
116 	filemap_invalidate_lock(inode->i_mapping);  in blk_ioctl_discard()
117 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_discard()
122 	filemap_invalidate_unlock(inode->i_mapping);  in blk_ioctl_discard()
134 		return -EBADF;  in blk_ioctl_secure_erase()
136 		return -EOPNOTSUPP;  in blk_ioctl_secure_erase()
138 		return -EFAULT;  in blk_ioctl_secure_erase()
143 		return -EINVAL;  in blk_ioctl_secure_erase()
145 		return -EINVAL;  in blk_ioctl_secure_erase()
147 	filemap_invalidate_lock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
148 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_secure_erase()
152 	filemap_invalidate_unlock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
162 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_zeroout()
166 		return -EBADF;  in blk_ioctl_zeroout()
169 		return -EFAULT;  in blk_ioctl_zeroout()
173 	end = start + len - 1;  in blk_ioctl_zeroout()
176 		return -EINVAL;  in blk_ioctl_zeroout()
178 		return -EINVAL;  in blk_ioctl_zeroout()
180 		return -EINVAL;  in blk_ioctl_zeroout()
182 		return -EINVAL;  in blk_ioctl_zeroout()
184 	/* Invalidate the page cache, including dirty pages */  in blk_ioctl_zeroout()
185 	filemap_invalidate_lock(inode->i_mapping);  in blk_ioctl_zeroout()
194 	filemap_invalidate_unlock(inode->i_mapping);  in blk_ioctl_zeroout()
242  * This is the equivalent of compat_ptr_ioctl(), to be used by block
244  * between 32-bit and 64-bit user space
249 	struct gendisk *disk = bdev->bd_disk;  in blkdev_compat_ptr_ioctl()
251 	if (disk->fops->ioctl)  in blkdev_compat_ptr_ioctl()
252 		return disk->fops->ioctl(bdev, mode, cmd,  in blkdev_compat_ptr_ioctl()
255 	return -ENOIOCTLCMD;  in blkdev_compat_ptr_ioctl()
278 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
282 		return -EPERM;  in blkdev_pr_register()
283 	if (!ops || !ops->pr_register)  in blkdev_pr_register()
284 		return -EOPNOTSUPP;  in blkdev_pr_register()
286 		return -EFAULT;  in blkdev_pr_register()
289 		return -EOPNOTSUPP;  in blkdev_pr_register()
290 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
296 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
300 		return -EPERM;  in blkdev_pr_reserve()
301 	if (!ops || !ops->pr_reserve)  in blkdev_pr_reserve()
302 		return -EOPNOTSUPP;  in blkdev_pr_reserve()
304 		return -EFAULT;  in blkdev_pr_reserve()
307 		return -EOPNOTSUPP;  in blkdev_pr_reserve()
308 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
314 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
318 		return -EPERM;  in blkdev_pr_release()
319 	if (!ops || !ops->pr_release)  in blkdev_pr_release()
320 		return -EOPNOTSUPP;  in blkdev_pr_release()
322 		return -EFAULT;  in blkdev_pr_release()
325 		return -EOPNOTSUPP;  in blkdev_pr_release()
326 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
332 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
336 		return -EPERM;  in blkdev_pr_preempt()
337 	if (!ops || !ops->pr_preempt)  in blkdev_pr_preempt()
338 		return -EOPNOTSUPP;  in blkdev_pr_preempt()
340 		return -EFAULT;  in blkdev_pr_preempt()
343 		return -EOPNOTSUPP;  in blkdev_pr_preempt()
344 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
350 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
354 		return -EPERM;  in blkdev_pr_clear()
355 	if (!ops || !ops->pr_clear)  in blkdev_pr_clear()
356 		return -EOPNOTSUPP;  in blkdev_pr_clear()
358 		return -EFAULT;  in blkdev_pr_clear()
361 		return -EOPNOTSUPP;  in blkdev_pr_clear()
362 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
369 		return -EACCES;  in blkdev_flushbuf()
371 	mutex_lock(&bdev->bd_holder_lock);  in blkdev_flushbuf()
372 	if (bdev->bd_holder_ops && bdev->bd_holder_ops->sync)  in blkdev_flushbuf()
373 		bdev->bd_holder_ops->sync(bdev);  in blkdev_flushbuf()
375 		mutex_unlock(&bdev->bd_holder_lock);  in blkdev_flushbuf()
389 		return -EACCES;  in blkdev_roset()
392 		return -EFAULT;  in blkdev_roset()
393 	if (bdev->bd_disk->fops->set_read_only) {  in blkdev_roset()
394 		ret = bdev->bd_disk->fops->set_read_only(bdev, n);  in blkdev_roset()
398 	bdev->bd_read_only = n;  in blkdev_roset()
405 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
410 		return -EINVAL;  in blkdev_getgeo()
411 	if (!disk->fops->getgeo)  in blkdev_getgeo()
412 		return -ENOTTY;  in blkdev_getgeo()
420 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
424 		return -EFAULT;  in blkdev_getgeo()
439 	struct gendisk *disk = bdev->bd_disk;  in compat_hdio_getgeo()
444 		return -EINVAL;  in compat_hdio_getgeo()
445 	if (!disk->fops->getgeo)  in compat_hdio_getgeo()
446 		return -ENOTTY;  in compat_hdio_getgeo()
454 	ret = disk->fops->getgeo(bdev, &geo);  in compat_hdio_getgeo()
459 	ret |= put_user(geo.start, &ugeo->start);  in compat_hdio_getgeo()
461 		ret = -EFAULT;  in compat_hdio_getgeo()
467 /* set the logical block size */
475 		return -EACCES;  in blkdev_bszset()
477 		return -EINVAL;  in blkdev_bszset()
479 		return -EFAULT;  in blkdev_bszset()
484 	handle = bdev_open_by_dev(bdev->bd_dev, mode, &bdev, NULL);  in blkdev_bszset()
486 		return -EBUSY;  in blkdev_bszset()
516 		return put_u64(argp, bdev->bd_disk->diskseq);  in blkdev_common_ioctl()
530 	case BLKSSZGET: /* get block device logical block size */  in blkdev_common_ioctl()
532 	case BLKPBSZGET: /* get block device physical block size */  in blkdev_common_ioctl()
551 			return -EACCES;  in blkdev_common_ioctl()
552 		bdev->bd_disk->bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_common_ioctl()
556 			return -EACCES;  in blkdev_common_ioctl()
558 			return -EINVAL;  in blkdev_common_ioctl()
559 		return disk_scan_partitions(bdev->bd_disk, mode);  in blkdev_common_ioctl()
577 		return -ENOIOCTLCMD;  in blkdev_common_ioctl()
589 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in blkdev_ioctl()
601 	/* Compat mode returns 32-bit data instead of 'long' */  in blkdev_ioctl()
605 			return -EINVAL;  in blkdev_ioctl()
607 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in blkdev_ioctl()
610 			return -EFBIG;  in blkdev_ioctl()
614 	case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */  in blkdev_ioctl()
629 	if (ret != -ENOIOCTLCMD)  in blkdev_ioctl()
632 	if (!bdev->bd_disk->fops->ioctl)  in blkdev_ioctl()
633 		return -ENOTTY;  in blkdev_ioctl()
634 	return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
650 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in compat_blkdev_ioctl()
651 	struct gendisk *disk = bdev->bd_disk;  in compat_blkdev_ioctl()
661 	/* Compat mode returns 32-bit data instead of 'long' */  in compat_blkdev_ioctl()
665 			return -EINVAL;  in compat_blkdev_ioctl()
667 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in compat_blkdev_ioctl()
670 			return -EFBIG;  in compat_blkdev_ioctl()
674 	case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */  in compat_blkdev_ioctl()
689 	if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl)  in compat_blkdev_ioctl()
690 		ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);  in compat_blkdev_ioctl()