u-boot-brain/fs/btrfs/disk-io.h

// SPDX-License-Identifier: GPL-2.0+
#ifndef __BTRFS_DISK_IO_H__
#define __BTRFS_DISK_IO_H__

#include <linux/sizes.h>
#include <fs_internal.h>
#include "ctree.h"
#include "disk-io.h"

#define BTRFS_SUPER_INFO_OFFSET SZ_64K
#define BTRFS_SUPER_INFO_SIZE	SZ_4K

int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len);

int btrfs_read_dev_super(struct blk_desc *desc, struct disk_partition *part,
			 struct btrfs_super_block *sb);
int btrfs_read_superblock(void);
#endif
fs: btrfs: Add more checksum algorithms This mostly crossports crypto/hash.[ch] from btrfs-progs. The differences are: - No blake2 support No blake2 related library in U-Boot yet. - Use uboot xxhash/sha256 directly No need to implement the code as U-Boot has already provided the interface. This adds the support for the following csums: - SHA256 - XXHASH Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> 2020-06-25 01:02:48 +09:00			`// SPDX-License-Identifier: GPL-2.0+`
			`#ifndef __BTRFS_DISK_IO_H__`
			`#define __BTRFS_DISK_IO_H__`

fs: btrfs: Crossport btrfs_read_dev_super() from btrfs-progs This patch uses generic code from btrfs-progs to read one super block from block device. To support the btrfs-progs coding style, the following is also crossported: - BTRFS_SETGET_FUNC for btrfs_super_block - btrfs_check_super() function - Move btrfs_read_superblock() to disk-io.[ch] Since super.c only contains pretty small amount of code, and the extra check will be covered in later root read patches. Differences between this implementation and btrfs-progs: - No sbflags/sb_bytenr support Since we only need to read the primary super block (like kernel), sbflags/sb_bytenr used by super block recovery is not needed. This also changes the following behavior of U-Boot btrfs: - Only reads the primary super block The old implementation reads all 3 super blocks, and also one non-existing backup. This is not correct, especially if there is another filesystem created on the device but old superblocks are not rewritten. Just like kernel, we only check the primary super block. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> [trini: Change error to be a define in compat.h] Signed-off-by: Tom Rini <trini@konsulko.com> 2020-06-25 01:02:49 +09:00			`#include <linux/sizes.h>`
			`#include <fs_internal.h>`
fs: btrfs: Add more checksum algorithms This mostly crossports crypto/hash.[ch] from btrfs-progs. The differences are: - No blake2 support No blake2 related library in U-Boot yet. - Use uboot xxhash/sha256 directly No need to implement the code as U-Boot has already provided the interface. This adds the support for the following csums: - SHA256 - XXHASH Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> 2020-06-25 01:02:48 +09:00			`#include "ctree.h"`
			`#include "disk-io.h"`

fs: btrfs: Crossport btrfs_read_dev_super() from btrfs-progs This patch uses generic code from btrfs-progs to read one super block from block device. To support the btrfs-progs coding style, the following is also crossported: - BTRFS_SETGET_FUNC for btrfs_super_block - btrfs_check_super() function - Move btrfs_read_superblock() to disk-io.[ch] Since super.c only contains pretty small amount of code, and the extra check will be covered in later root read patches. Differences between this implementation and btrfs-progs: - No sbflags/sb_bytenr support Since we only need to read the primary super block (like kernel), sbflags/sb_bytenr used by super block recovery is not needed. This also changes the following behavior of U-Boot btrfs: - Only reads the primary super block The old implementation reads all 3 super blocks, and also one non-existing backup. This is not correct, especially if there is another filesystem created on the device but old superblocks are not rewritten. Just like kernel, we only check the primary super block. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> [trini: Change error to be a define in compat.h] Signed-off-by: Tom Rini <trini@konsulko.com> 2020-06-25 01:02:49 +09:00			`#define BTRFS_SUPER_INFO_OFFSET SZ_64K`
			`#define BTRFS_SUPER_INFO_SIZE SZ_4K`
fs: btrfs: Add more checksum algorithms This mostly crossports crypto/hash.[ch] from btrfs-progs. The differences are: - No blake2 support No blake2 related library in U-Boot yet. - Use uboot xxhash/sha256 directly No need to implement the code as U-Boot has already provided the interface. This adds the support for the following csums: - SHA256 - XXHASH Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> 2020-06-25 01:02:48 +09:00
			`int btrfs_csum_data(u16 csum_type, const u8 data, u8 out, size_t len);`

fs: btrfs: Crossport btrfs_read_dev_super() from btrfs-progs This patch uses generic code from btrfs-progs to read one super block from block device. To support the btrfs-progs coding style, the following is also crossported: - BTRFS_SETGET_FUNC for btrfs_super_block - btrfs_check_super() function - Move btrfs_read_superblock() to disk-io.[ch] Since super.c only contains pretty small amount of code, and the extra check will be covered in later root read patches. Differences between this implementation and btrfs-progs: - No sbflags/sb_bytenr support Since we only need to read the primary super block (like kernel), sbflags/sb_bytenr used by super block recovery is not needed. This also changes the following behavior of U-Boot btrfs: - Only reads the primary super block The old implementation reads all 3 super blocks, and also one non-existing backup. This is not correct, especially if there is another filesystem created on the device but old superblocks are not rewritten. Just like kernel, we only check the primary super block. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> [trini: Change error to be a define in compat.h] Signed-off-by: Tom Rini <trini@konsulko.com> 2020-06-25 01:02:49 +09:00			`int btrfs_read_dev_super(struct blk_desc desc, struct disk_partition part,`
			`struct btrfs_super_block *sb);`
			`int btrfs_read_superblock(void);`
fs: btrfs: Add more checksum algorithms This mostly crossports crypto/hash.[ch] from btrfs-progs. The differences are: - No blake2 support No blake2 related library in U-Boot yet. - Use uboot xxhash/sha256 directly No need to implement the code as U-Boot has already provided the interface. This adds the support for the following csums: - SHA256 - XXHASH Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz> 2020-06-25 01:02:48 +09:00			`#endif`