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 */ 44 extern int cvtflag; /* convert from old to new tape format */ 45 extern int bflag; /* set input block size */ 46 extern int dflag; /* print out debugging info */ 47 extern int hflag; /* restore heirarchies */ 48 extern int mflag; /* restore by name instead of inode number */ 49 extern int Nflag; /* do not write the disk */ 50 extern int uflag; /* unlink symlink targets */ 51 extern int vflag; /* print out actions taken */ 52 extern int yflag; /* always try to recover from tape errors */ 53 /* 54 * Global variables 55 */ 56 extern char *dumpmap; /* map of inodes on this dump tape */ 57 extern char *usedinomap; /* map of inodes that are in use on this fs */ 58 extern ino_t maxino; /* highest numbered inode in this file system */ 59 extern long dumpnum; /* location of the dump on this tape */ 60 extern long volno; /* current volume being read */ 61 extern long ntrec; /* number of TP_BSIZE records per tape block */ 62 extern time_t dumptime; /* time that this dump begins */ 63 extern time_t dumpdate; /* time that this dump was made */ 64 extern char command; /* opration being performed */ 65 extern FILE *terminal; /* file descriptor for the terminal input */ 66 extern int oldinofmt; /* reading tape with old format inodes */ 67 extern 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 */ 72 struct 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 */ 107 struct 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 */ 121 typedef 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