projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d3c95f5 JL |
1 | /* |
| 2 | * GRUB -- GRand Unified Bootloader | |
| 3 | * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. | |
| 4 | * | |
| 1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 4d3c95f5 JL |
6 | */ |
| 7 | /* | |
| 8 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. | |
| 9 | * Use is subject to license terms. | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _SYS_ZIL_H | |
| 13 | #define _SYS_ZIL_H | |
| 14 | ||
| 15 | /* | |
| 16 | * Intent log format: | |
| 17 | * | |
| 18 | * Each objset has its own intent log. The log header (zil_header_t) | |
| 19 | * for objset N's intent log is kept in the Nth object of the SPA's | |
| 20 | * intent_log objset. The log header points to a chain of log blocks, | |
| 21 | * each of which contains log records (i.e., transactions) followed by | |
| 22 | * a log block trailer (zil_trailer_t). The format of a log record | |
| 23 | * depends on the record (or transaction) type, but all records begin | |
| 24 | * with a common structure that defines the type, length, and txg. | |
| 25 | */ | |
| 26 | ||
| 27 | /* | |
| 28 | * Intent log header - this on disk structure holds fields to manage | |
| 29 | * the log. All fields are 64 bit to easily handle cross architectures. | |
| 30 | */ | |
| 31 | typedef struct zil_header { | |
| 32 | uint64_t zh_claim_txg; /* txg in which log blocks were claimed */ | |
| 33 | uint64_t zh_replay_seq; /* highest replayed sequence number */ | |
| 34 | blkptr_t zh_log; /* log chain */ | |
| 35 | uint64_t zh_claim_seq; /* highest claimed sequence number */ | |
| 36 | uint64_t zh_flags; /* header flags */ | |
| 37 | uint64_t zh_pad[4]; | |
| 38 | } zil_header_t; | |
| 39 | ||
| 40 | /* | |
| 41 | * zh_flags bit settings | |
| 42 | */ | |
| 43 | #define ZIL_REPLAY_NEEDED 0x1 /* replay needed - internal only */ | |
| 44 | ||
| 45 | #endif /* _SYS_ZIL_H */ |