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21a14facb1
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
27 lines
570 B
C
27 lines
570 B
C
/*
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* BTRFS filesystem implementation for U-Boot
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*
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* 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <compiler.h>
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#include <fs_internal.h>
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struct blk_desc *btrfs_blk_desc;
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disk_partition_t *btrfs_part_info;
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int btrfs_devread(u64 address, int byte_len, void *buf)
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{
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lbaint_t sector;
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int byte_offset;
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sector = address >> btrfs_blk_desc->log2blksz;
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byte_offset = address % btrfs_blk_desc->blksz;
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return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset,
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byte_len, buf);
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}
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