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99 lines
2.0 KiB
99 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* AFS fileserver XDR types |
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* |
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* Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells ([email protected]) |
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*/ |
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#ifndef XDR_FS_H |
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#define XDR_FS_H |
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struct afs_xdr_AFSFetchStatus { |
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__be32 if_version; |
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#define AFS_FSTATUS_VERSION 1 |
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__be32 type; |
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__be32 nlink; |
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__be32 size_lo; |
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__be32 data_version_lo; |
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__be32 author; |
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__be32 owner; |
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__be32 caller_access; |
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__be32 anon_access; |
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__be32 mode; |
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__be32 parent_vnode; |
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__be32 parent_unique; |
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__be32 seg_size; |
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__be32 mtime_client; |
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__be32 mtime_server; |
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__be32 group; |
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__be32 sync_counter; |
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__be32 data_version_hi; |
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__be32 lock_count; |
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__be32 size_hi; |
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__be32 abort_code; |
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} __packed; |
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#define AFS_DIR_HASHTBL_SIZE 128 |
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#define AFS_DIR_DIRENT_SIZE 32 |
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#define AFS_DIR_SLOTS_PER_BLOCK 64 |
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#define AFS_DIR_BLOCK_SIZE 2048 |
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#define AFS_DIR_BLOCKS_PER_PAGE (PAGE_SIZE / AFS_DIR_BLOCK_SIZE) |
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#define AFS_DIR_MAX_SLOTS 65536 |
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#define AFS_DIR_BLOCKS_WITH_CTR 128 |
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#define AFS_DIR_MAX_BLOCKS 1023 |
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#define AFS_DIR_RESV_BLOCKS 1 |
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#define AFS_DIR_RESV_BLOCKS0 13 |
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/* |
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* Directory entry structure. |
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*/ |
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union afs_xdr_dirent { |
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struct { |
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u8 valid; |
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u8 unused[1]; |
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__be16 hash_next; |
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__be32 vnode; |
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__be32 unique; |
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u8 name[16]; |
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u8 overflow[4]; /* if any char of the name (inc |
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* NUL) reaches here, consume |
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* the next dirent too */ |
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} u; |
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u8 extended_name[32]; |
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} __packed; |
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/* |
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* Directory block header (one at the beginning of every 2048-byte block). |
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*/ |
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struct afs_xdr_dir_hdr { |
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__be16 npages; |
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__be16 magic; |
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#define AFS_DIR_MAGIC htons(1234) |
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u8 reserved; |
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u8 bitmap[8]; |
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u8 pad[19]; |
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} __packed; |
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/* |
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* Directory block layout |
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*/ |
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union afs_xdr_dir_block { |
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struct afs_xdr_dir_hdr hdr; |
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struct { |
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struct afs_xdr_dir_hdr hdr; |
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u8 alloc_ctrs[AFS_DIR_MAX_BLOCKS]; |
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__be16 hashtable[AFS_DIR_HASHTBL_SIZE]; |
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} meta; |
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union afs_xdr_dirent dirents[AFS_DIR_SLOTS_PER_BLOCK]; |
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} __packed; |
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/* |
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* Directory layout on a linux VM page. |
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*/ |
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struct afs_xdr_dir_page { |
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union afs_xdr_dir_block blocks[AFS_DIR_BLOCKS_PER_PAGE]; |
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}; |
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#endif /* XDR_FS_H */
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