47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright 2012 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef DM_BOOTCACHE_H
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#define DM_BOOTCACHE_H
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#include <linux/types.h>
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enum { BOOTCACHE_MAGIC = 1651470196,
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BOOTCACHE_VERSION = 3,
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MAX_SIGNATURE = 256
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};
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struct bootcache_trace {
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__u64 sector; /* Sector offset */
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__u64 count; /* Number of blocks traced */
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__u64 ino; /* Inode number of file */
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};
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struct bootcache_hdr {
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__u64 sector; /* Sector offset where header is stored */
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__u32 magic; /* Magic number */
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__u32 version; /* Verion of boot cache */
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__u32 state; /* Curent state */
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__u32 num_trace_recs; /* Number of trace reords */
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__u32 sectors_meta; /* Size of trace data on disk in sectors*/
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__u32 sectors_data; /* Size of the data area in sectors*/
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__u32 max_sectors; /* Max sectors that can to read */
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__u32 max_hw_sectors; /* Max hardware sectore that can be read */
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__u32 alignment; /* Alignement on disk */
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char date[12]; /* Date and time dm-bootcache was compiled */
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char time[12];
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char signature[MAX_SIGNATURE];
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};
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#endif
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