83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
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/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*
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* @(#)exf.h 10.7 (Berkeley) 7/9/96
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*/
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/* Undo direction. */
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/*
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* exf --
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* The file structure.
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*/
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struct _exf {
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int refcnt; /* Reference count. */
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/* Underlying database state. */
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DB *db; /* File db structure. */
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char *c_lp; /* Cached line. */
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size_t c_len; /* Cached line length. */
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recno_t c_lno; /* Cached line number. */
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recno_t c_nlines; /* Cached lines in the file. */
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DB *log; /* Log db structure. */
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char *l_lp; /* Log buffer. */
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size_t l_len; /* Log buffer length. */
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recno_t l_high; /* Log last + 1 record number. */
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recno_t l_cur; /* Log current record number. */
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MARK l_cursor; /* Log cursor position. */
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dir_t lundo; /* Last undo direction. */
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LIST_HEAD(_markh, _lmark) marks;/* Linked list of file MARK's. */
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/*
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* XXX
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* Mtime should be a struct timespec, but time_t is more portable.
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*/
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dev_t mdev; /* Device. */
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ino_t minode; /* Inode. */
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time_t mtime; /* Last modification time. */
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int fcntl_fd; /* Fcntl locking fd; see exf.c. */
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/*
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* Recovery in general, and these fields specifically, are described
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* in recover.c.
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*/
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#define RCV_PERIOD 120 /* Sync every two minutes. */
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char *rcv_path; /* Recover file name. */
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char *rcv_mpath; /* Recover mail file name. */
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int rcv_fd; /* Locked mail file descriptor. */
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#define F_DEVSET 0x001 /* mdev/minode fields initialized. */
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#define F_FIRSTMODIFY 0x002 /* File not yet modified. */
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#define F_MODIFIED 0x004 /* File is currently dirty. */
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#define F_MULTILOCK 0x008 /* Multiple processes running, lock. */
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#define F_NOLOG 0x010 /* Logging turned off. */
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#define F_RCV_NORM 0x020 /* Don't delete recovery files. */
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#define F_RCV_ON 0x040 /* Recovery is possible. */
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#define F_UNDO 0x080 /* No change since last undo. */
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u_int8_t flags;
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};
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/* Flags to db_get(). */
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#define DBG_FATAL 0x001 /* If DNE, error message. */
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#define DBG_NOCACHE 0x002 /* Ignore the front-end cache. */
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/* Flags to file_init() and file_write(). */
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#define FS_ALL 0x001 /* Write the entire file. */
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#define FS_APPEND 0x002 /* Append to the file. */
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#define FS_FORCE 0x004 /* Force is set. */
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#define FS_OPENERR 0x008 /* Open failed, try it again. */
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#define FS_POSSIBLE 0x010 /* Force could have been set. */
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#define FS_SETALT 0x020 /* Set alternate file name. */
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/* Flags to rcv_sync(). */
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#define RCV_EMAIL 0x01 /* Send the user email, IFF file modified. */
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#define RCV_ENDSESSION 0x02 /* End the file session. */
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#define RCV_PRESERVE 0x04 /* Preserve backup file, IFF file modified. */
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#define RCV_SNAPSHOT 0x08 /* Snapshot the recovery, and send email. */
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