GC !__DragonFly__ section.
[dragonfly.git] / sbin / restore / restore.h
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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