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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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machserver
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1.098
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lfs
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lfsDirOpLog.h
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C/C++ Source or Header
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1990-10-19
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56 lines
/*
* lfsDirOpLog.h --
*
* Declarations of directory operation log for a LFS file system.
*
* Copyright 1990 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*
* $Header: /sprite/src/kernel/lfs/RCS/lfsDirOpLog.h,v 1.1 90/10/19 16:02:20 mendel Exp $ SPRITE (Berkeley)
*/
#ifndef _LFSDIROPLOG
#define _LFSDIROPLOG
/* constants */
/* data structures */
typedef struct LfsDirOpLogBlockHdr {
int magic; /* Better be LFS_DIROP_LOG_MAGIC. */
int size; /* Size in bytes of log entries on block. */
int nextLogBlock; /* Block offset of the next log block in
* this segment. */
int reserved; /* Reserved, must be zero. */
} LfsDirOpLogBlockHdr;
typedef struct LfsDirOpLogEntryHdr {
int logSeqNum; /* Log sequence number of entry. */
int opFlags; /* Directory operation, see fsdm.h */
int dirFileNumber; /* Directory being operated on. */
int dirOffset; /* Offset into directory dirFileNumber of
* entry. */
int linkCount; /* Link count of object before operation. */
} LfsDirOpLogEntryHdr;
typedef struct LfsDirOpLogEntry {
LfsDirOpLogEntryHdr hdr; /* Operation type, fileNumbers and flags. */
Fslcl_DirEntry dirEntry; /* Directory entry being operated on. */
} LfsDirOpLogEntry;
#define LFS_DIR_OP_LOG_ENTRY_SIZE(entryPtr) \
((entryPtr)->dirEntry.recordLength + sizeof(LfsDirOpLogEntryHdr))
#define LFS_DIROP_LOG_MAGIC 0x1f5d109
/* procedures */
#endif /* _LFSDIROPLOG */