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| author | Marek Behún <marek.behun@nic.cz> | 2017-09-03 17:00:28 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-10-02 21:52:17 -0400 |
| commit | 21a14facb1494592c3ad4874c6a00539d15a29cf (patch) | |
| tree | 96b0f5d1bfcbddff721717c6609ec401bd594ccf /fs/btrfs/dev.c | |
| parent | 597b4aff7b5d85946d2028ab9498116f53357dbc (diff) | |
| download | u-boot-21a14facb1494592c3ad4874c6a00539d15a29cf.tar.gz | |
fs: btrfs: Add single-device read-only BTRFS implementation
This adds the proper implementation for the BTRFS filesystem.
The implementation currently supports only read-only mode and
the filesystem can be only on a single device.
Checksums of data chunks is unimplemented.
Compression is implemented (ZLIB + LZO).
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/btrfs.h
create mode 100644 fs/btrfs/chunk-map.c
create mode 100644 fs/btrfs/compression.c
create mode 100644 fs/btrfs/ctree.c
create mode 100644 fs/btrfs/dev.c
create mode 100644 fs/btrfs/dir-item.c
create mode 100644 fs/btrfs/extent-io.c
create mode 100644 fs/btrfs/hash.c
create mode 100644 fs/btrfs/inode.c
create mode 100644 fs/btrfs/root.c
create mode 100644 fs/btrfs/subvolume.c
create mode 100644 fs/btrfs/super.c
Diffstat (limited to 'fs/btrfs/dev.c')
| -rw-r--r-- | fs/btrfs/dev.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/btrfs/dev.c b/fs/btrfs/dev.c new file mode 100644 index 0000000000..fd2e9b6127 --- /dev/null +++ b/fs/btrfs/dev.c @@ -0,0 +1,26 @@ +/* + * BTRFS filesystem implementation for U-Boot + * + * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <compiler.h> +#include <fs_internal.h> + +struct blk_desc *btrfs_blk_desc; +disk_partition_t *btrfs_part_info; + +int btrfs_devread(u64 address, int byte_len, void *buf) +{ + lbaint_t sector; + int byte_offset; + + sector = address >> btrfs_blk_desc->log2blksz; + byte_offset = address % btrfs_blk_desc->blksz; + + return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset, + byte_len, buf); +} |