From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001 From: Kacper Date: Sun, 7 Dec 2025 20:10:31 +0100 Subject: Add build system scaffolding and libc headers --- include/arch/x86_64/linux/fiemap.h | 98 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 include/arch/x86_64/linux/fiemap.h (limited to 'include/arch/x86_64/linux/fiemap.h') diff --git a/include/arch/x86_64/linux/fiemap.h b/include/arch/x86_64/linux/fiemap.h new file mode 100644 index 00000000..681bb54e --- /dev/null +++ b/include/arch/x86_64/linux/fiemap.h @@ -0,0 +1,98 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * FS_IOC_FIEMAP ioctl infrastructure. + * + * Some portions copyright (C) 2007 Cluster File Systems, Inc + * + * Authors: Mark Fasheh + * Kalpak Shah + * Andreas Dilger + */ + +#ifndef _LINUX_FIEMAP_H +#define _LINUX_FIEMAP_H + +#include + +/** + * struct fiemap_extent - description of one fiemap extent + * @fe_logical: byte offset of the extent in the file + * @fe_physical: byte offset of extent on disk + * @fe_length: length in bytes for this extent + * @fe_flags: FIEMAP_EXTENT_* flags for this extent + */ +struct fiemap_extent { + __u64 fe_logical; + __u64 fe_physical; + __u64 fe_length; + /* private: */ + __u64 fe_reserved64[2]; + /* public: */ + __u32 fe_flags; + /* private: */ + __u32 fe_reserved[3]; +}; + +/** + * struct fiemap - file extent mappings + * @fm_start: byte offset (inclusive) at which to start mapping (in) + * @fm_length: logical length of mapping which userspace wants (in) + * @fm_flags: FIEMAP_FLAG_* flags for request (in/out) + * @fm_mapped_extents: number of extents that were mapped (out) + * @fm_extent_count: size of fm_extents array (in) + * @fm_extents: array of mapped extents (out) + */ +struct fiemap { + __u64 fm_start; + __u64 fm_length; + __u32 fm_flags; + __u32 fm_mapped_extents; + __u32 fm_extent_count; + /* private: */ + __u32 fm_reserved; + /* public: */ + struct fiemap_extent fm_extents[]; +}; + +#define FIEMAP_MAX_OFFSET (~0ULL) + +/* flags used in fm_flags: */ +#define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */ +#define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */ +#define FIEMAP_FLAG_CACHE 0x00000004 /* request caching of the extents */ + +#define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR) + +/* flags used in fe_flags: */ +#define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent in file. */ +#define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data location unknown. */ +#define FIEMAP_EXTENT_DELALLOC \ + 0x00000004 /* Location still pending. \ + * Sets EXTENT_UNKNOWN. */ +#define FIEMAP_EXTENT_ENCODED \ + 0x00000008 /* Data can not be read \ + * while fs is unmounted */ +#define FIEMAP_EXTENT_DATA_ENCRYPTED \ + 0x00000080 /* Data is encrypted by fs. \ + * Sets EXTENT_NO_BYPASS. */ +#define FIEMAP_EXTENT_NOT_ALIGNED \ + 0x00000100 /* Extent offsets may not be \ + * block aligned. */ +#define FIEMAP_EXTENT_DATA_INLINE \ + 0x00000200 /* Data mixed with metadata. \ + * Sets EXTENT_NOT_ALIGNED.*/ +#define FIEMAP_EXTENT_DATA_TAIL \ + 0x00000400 /* Multiple files in block. \ + * Sets EXTENT_NOT_ALIGNED.*/ +#define FIEMAP_EXTENT_UNWRITTEN \ + 0x00000800 /* Space allocated, but \ + * no data (i.e. zero). */ +#define FIEMAP_EXTENT_MERGED \ + 0x00001000 /* File does not natively \ + * support extents. Result \ + * merged for efficiency. */ +#define FIEMAP_EXTENT_SHARED \ + 0x00002000 /* Space shared with other \ + * files. */ + +#endif /* _LINUX_FIEMAP_H */ -- cgit v1.2.3