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u-boot/fs/btrfs/btrfs.h

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
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
2017-09-03 15:00:28 +00:00
/*
* BTRFS filesystem implementation for U-Boot
*
treewide: Fix Marek's name and change my e-mail address Fix diacritics in some instances of my name and change my e-mail address to kabel@kernel.org. Add corresponding .mailmap entries. Signed-off-by: Marek Behún <kabel@kernel.org> Reviewed-by: Stefan Roese <sr@denx.de>
2022-06-01 15:17:06 +00:00
* 2017 Marek Behún, CZ.NIC, kabel@kernel.org
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
2017-09-03 15:00:28 +00:00
*/
#ifndef __BTRFS_BTRFS_H__
#define __BTRFS_BTRFS_H__
#include <linux/rbtree.h>
btrfs: Fix compilation on big endian systems Fix following two compile errors on big endian systems: CC fs/btrfs/btrfs.o In file included from include/linux/byteorder/big_endian.h:107, from ./arch/powerpc/include/asm/byteorder.h:82, from ./arch/powerpc/include/asm/bitops.h:8, from include/linux/bitops.h:152, from include/uuid.h:9, from fs/btrfs/btrfs.c:10: fs/btrfs/conv-funcs.h: In function ‘btrfs_key_to_disk’: include/linux/byteorder/generic.h:90:21: error: ‘__cpu_to_le16’ undeclared (first use in this function); did you mean ‘__cpu_to_le16p’? #define cpu_to_le16 __cpu_to_le16 ^~~~~~~~~~~~~ fs/btrfs/conv-funcs.h:79:10: note: in expansion of macro ‘cpu_to_le16’ __u16: cpu_to_le16, \ ^~~~~~~~~~~ CC fs/btrfs/compression.o In file included from ./arch/powerpc/include/asm/unaligned.h:9, from fs/btrfs/compression.c:16: include/linux/unaligned/access_ok.h:6:19: error: redefinition of ‘get_unaligned_le16’ static inline u16 get_unaligned_le16(const void *p) ^~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:16, from fs/btrfs/btrfs.h:12, from fs/btrfs/compression.c:8: include/linux/unaligned/le_byteshift.h:40:19: note: previous definition of ‘get_unaligned_le16’ was here static inline u16 get_unaligned_le16(const void *p) ^~~~~~~~~~~~~~~~~~ Include file asm/unaligned.h contains arch specific macros and functions for unaligned access as opposite to linux/unaligned le_byteshift.h which contains macros and functions specific to little endian systems only. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Marek Behún <marek.behun@nic.cz> Reviewed-by: Qu Wenruo <wqu@suse.com>
2022-04-07 12:51:03 +00:00
#include "ctree.h"
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
2017-09-03 15:00:28 +00:00
extern struct btrfs_info btrfs_info;
fs: btrfs: Crossport open_ctree_fs_info() from btrfs-progs open_ctree_fs_info() is the main entry point to open btrfs. This version is a simplfied version of __open_ctree_fd() of btrfs-progs, the main differences are: - Parameters on how to specify a block device Instead of @fd and @path, U-Boot uses blk_desc and disk_partition_t. - Remove open_ctree flags There won't be multiple open ctree modes in U-Boot. Otherwise functions structures are all kept the same. With open_ctree_fs_info() implemented, also introduce the global current_fs_info pointer to show the current opened btrfs. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
2020-06-24 16:03:01 +00:00
extern struct btrfs_fs_info *current_fs_info;
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
2017-09-03 15:00:28 +00:00
/* compression.c */
u32 btrfs_decompress(u8 type, const char *, u32, char *, u32);
/* inode.c */
fs: btrfs: Use btrfs_readlink() to implement __btrfs_readlink() The existing __btrfs_readlink() can be easily re-implemented using the extent buffer based btrfs_readlink(). This is the first step to re-implement U-Boot's btrfs code. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
2020-06-24 16:03:03 +00:00
int btrfs_readlink(struct btrfs_root *root, u64 ino, char *target);
fs: btrfs: Implement btrfs_file_read() This version of btrfs_file_read() has the following new features: - Tries all mirrors - More handling on unaligned size - Better compressed extent handling The old implementation doesn't handle compressed extent with offset properly: we need to read out the whole compressed extent, then decompress the whole extent, and only then copy the requested part. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
2020-06-24 16:03:11 +00:00
int btrfs_file_read(struct btrfs_root *root, u64 ino, u64 file_offset, u64 len,
char *dest);
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
2017-09-03 15:00:28 +00:00
/* subvolume.c */
u64 btrfs_get_default_subvol_objectid(void);
#endif /* !__BTRFS_BTRFS_H__ */
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