restore.h revision 35852 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	@(#)restore.h	8.3 (Berkeley) 9/13/94
39 */
40
41/*
42 * Flags
43 */
44extern int	cvtflag;	/* convert from old to new tape format */
45extern int	bflag;		/* set input block size */
46extern int	dflag;		/* print out debugging info */
47extern int	hflag;		/* restore heirarchies */
48extern int	mflag;		/* restore by name instead of inode number */
49extern int	Nflag;		/* do not write the disk */
50extern int	uflag;		/* unlink symlink targets */
51extern int	vflag;		/* print out actions taken */
52extern int	yflag;		/* always try to recover from tape errors */
53/*
54 * Global variables
55 */
56extern char	*dumpmap; 	/* map of inodes on this dump tape */
57extern char	*usedinomap; 	/* map of inodes that are in use on this fs */
58extern ino_t	maxino;		/* highest numbered inode in this file system */
59extern long	dumpnum;	/* location of the dump on this tape */
60extern long	volno;		/* current volume being read */
61extern long	ntrec;		/* number of TP_BSIZE records per tape block */
62extern time_t	dumptime;	/* time that this dump begins */
63extern time_t	dumpdate;	/* time that this dump was made */
64extern char	command;	/* opration being performed */
65extern FILE	*terminal;	/* file descriptor for the terminal input */
66extern int	oldinofmt;	/* reading tape with old format inodes */
67extern int	Bcvt;		/* need byte swapping on inodes and dirs */
68
69/*
70 * Each file in the file system is described by one of these entries
71 */
72struct entry {
73	char	*e_name;		/* the current name of this entry */
74	u_char	e_namlen;		/* length of this name */
75	char	e_type;			/* type of this entry, see below */
76	short	e_flags;		/* status flags, see below */
77	ino_t	e_ino;			/* inode number in previous file sys */
78	long	e_index;		/* unique index (for dumpped table) */
79	struct	entry *e_parent;	/* pointer to parent directory (..) */
80	struct	entry *e_sibling;	/* next element in this directory (.) */
81	struct	entry *e_links;		/* hard links to this inode */
82	struct	entry *e_entries;	/* for directories, their entries */
83	struct	entry *e_next;		/* hash chain list */
84};
85/* types */
86#define	LEAF 1			/* non-directory entry */
87#define NODE 2			/* directory entry */
88#define LINK 4			/* synthesized type, stripped by addentry */
89/* flags */
90#define EXTRACT		0x0001	/* entry is to be replaced from the tape */
91#define NEW		0x0002	/* a new entry to be extracted */
92#define KEEP		0x0004	/* entry is not to change */
93#define REMOVED		0x0010	/* entry has been removed */
94#define TMPNAME		0x0020	/* entry has been given a temporary name */
95#define EXISTED		0x0040	/* directory already existed during extract */
96
97/*
98 * Constants associated with entry structs
99 */
100#define HARDLINK	1
101#define SYMLINK		2
102#define TMPHDR		"RSTTMP"
103
104/*
105 * The entry describes the next file available on the tape
106 */
107struct context {
108	char	*name;		/* name of file */
109	ino_t	ino;		/* inumber of file */
110	struct	dinode *dip;	/* pointer to inode */
111	char	action;		/* action being taken on this file */
112} curfile;
113/* actions */
114#define	USING	1	/* extracting from the tape */
115#define	SKIP	2	/* skipping */
116#define UNKNOWN 3	/* disposition or starting point is unknown */
117
118/*
119 * Definitions for library routines operating on directories.
120 */
121typedef struct rstdirdesc RST_DIR;
122
123/*
124 * Flags to setdirmodes.
125 */
126#define FORCE	0x0001
127
128/*
129 * Useful macros
130 */
131#define TSTINO(ino, map) \
132	(map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
133#define	SETINO(ino, map) \
134	map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
135
136#define dprintf		if (dflag) fprintf
137#define vprintf		if (vflag) fprintf
138
139#define GOOD 1
140#define FAIL 0
141