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