b4d0d230cc
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public licence as published by the free software foundation either version 2 of the licence or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 114 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170857.552531963@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2 KiB
C
100 lines
2 KiB
C
/* 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 (dhowells@redhat.com)
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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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