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Diffstat (limited to 'contrib/nvi/common/exf.h')
| -rw-r--r-- | contrib/nvi/common/exf.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/nvi/common/exf.h b/contrib/nvi/common/exf.h new file mode 100644 index 0000000..cdfaa82 --- /dev/null +++ b/contrib/nvi/common/exf.h @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + * + * @(#)exf.h 10.7 (Berkeley) 7/9/96 + */ + /* Undo direction. */ +/* + * exf -- + * The file structure. + */ +struct _exf { + int refcnt; /* Reference count. */ + + /* Underlying database state. */ + DB *db; /* File db structure. */ + char *c_lp; /* Cached line. */ + size_t c_len; /* Cached line length. */ + recno_t c_lno; /* Cached line number. */ + recno_t c_nlines; /* Cached lines in the file. */ + + DB *log; /* Log db structure. */ + char *l_lp; /* Log buffer. */ + size_t l_len; /* Log buffer length. */ + recno_t l_high; /* Log last + 1 record number. */ + recno_t l_cur; /* Log current record number. */ + MARK l_cursor; /* Log cursor position. */ + dir_t lundo; /* Last undo direction. */ + + LIST_HEAD(_markh, _lmark) marks;/* Linked list of file MARK's. */ + + /* + * XXX + * Mtime should be a struct timespec, but time_t is more portable. + */ + dev_t mdev; /* Device. */ + ino_t minode; /* Inode. */ + time_t mtime; /* Last modification time. */ + + int fcntl_fd; /* Fcntl locking fd; see exf.c. */ + + /* + * Recovery in general, and these fields specifically, are described + * in recover.c. + */ +#define RCV_PERIOD 120 /* Sync every two minutes. */ + char *rcv_path; /* Recover file name. */ + char *rcv_mpath; /* Recover mail file name. */ + int rcv_fd; /* Locked mail file descriptor. */ + +#define F_DEVSET 0x001 /* mdev/minode fields initialized. */ +#define F_FIRSTMODIFY 0x002 /* File not yet modified. */ +#define F_MODIFIED 0x004 /* File is currently dirty. */ +#define F_MULTILOCK 0x008 /* Multiple processes running, lock. */ +#define F_NOLOG 0x010 /* Logging turned off. */ +#define F_RCV_NORM 0x020 /* Don't delete recovery files. */ +#define F_RCV_ON 0x040 /* Recovery is possible. */ +#define F_UNDO 0x080 /* No change since last undo. */ + u_int8_t flags; +}; + +/* Flags to db_get(). */ +#define DBG_FATAL 0x001 /* If DNE, error message. */ +#define DBG_NOCACHE 0x002 /* Ignore the front-end cache. */ + +/* Flags to file_init() and file_write(). */ +#define FS_ALL 0x001 /* Write the entire file. */ +#define FS_APPEND 0x002 /* Append to the file. */ +#define FS_FORCE 0x004 /* Force is set. */ +#define FS_OPENERR 0x008 /* Open failed, try it again. */ +#define FS_POSSIBLE 0x010 /* Force could have been set. */ +#define FS_SETALT 0x020 /* Set alternate file name. */ + +/* Flags to rcv_sync(). */ +#define RCV_EMAIL 0x01 /* Send the user email, IFF file modified. */ +#define RCV_ENDSESSION 0x02 /* End the file session. */ +#define RCV_PRESERVE 0x04 /* Preserve backup file, IFF file modified. */ +#define RCV_SNAPSHOT 0x08 /* Snapshot the recovery, and send email. */ |
