Found by: Coverity scan.
CID: 73647

Found by Coverity scan.
CID: 96603

large blocks basically use extensible dataset feature, or to be exact,
setting recordsize above 128k will trigger large_block feature to be
enabled and storing such blocks is using feature extensible dataset. so
the extensible dataset is prerequisite.

Changes implement read support extensible dataset… instead of fixed DMU
types they dont specify type, making it possible to use fat zap objects
from bonus area.

Size after shift could exceed 16 bits; use grub_unit32_t for result.

Reported and tested by: Kostya Berger <bergerkos@yahoo.co.uk>
Closes: 44448

grub_memset should zero out padding after data end. It is not clear
why it is needed at all - ZFS block is at least 512 bytes and power
of two, so it is always multiple of 16 bytes. This grub_memset
apparently never did anything.

In the past birth was always zero for holes. This feature started
to make use of birth for holes as well, so change code to test for
valid DVA address instead.

Found by: Coverity scan.

Found by: Coverity scan.

Found by: Coverity scan.

Found by: Coverity Scan.

Reported by: Tim Chase <dweeezil>

CID: 73635

	Fixes squash4.

	Just "packed" doesn't always pack the way we expect.

	type.
	(grub_gcm_decrypt): Likewise.
	(algo_decrypt): Likewise.
	(grub_zfs_decrypt_real): Transform error type.

It was accidently committed to wrong branch

This reverts commit 0ee5cdfe.

	(check_pool_label): Likewise. Fixes overflow.
	(nvlist_find_value): Fix comparison.

	rather than signed one.
	(recovery): Likewise.

	Reduces zfs.mod by 160 bytes (208 compressed).

	defined before trying to use it.

	macros to GRUB ones.

	* grub-core/fs/zfs/zfs.c (zio_read): Don't use casts to retrieve mac.

	inappropriate printf.

	<= 0.