1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 /* 38 * Flags 39 */ 40 extern int bflag; /* set input block size */ 41 extern int dflag; /* print out debugging info */ 42 extern int Dflag; /* degraded mode - try hard to get stuff back */ 43 extern int hflag; /* restore hierarchies */ 44 extern int mflag; /* restore by name instead of inode number */ 45 extern int Nflag; /* do not write the disk */ 46 extern int uflag; /* unlink symlink targets */ 47 extern int vflag; /* print out actions taken */ 48 extern int yflag; /* always try to recover from tape errors */ 49 /* 50 * Global variables 51 */ 52 extern char *dumpmap; /* map of inodes on this dump tape */ 53 extern char *usedinomap; /* map of inodes that are in use on this fs */ 54 extern ino_t maxino; /* highest numbered inode in this file system */ 55 extern long dumpnum; /* location of the dump on this tape */ 56 extern long volno; /* current volume being read */ 57 extern long ntrec; /* number of TP_BSIZE records per tape block */ 58 extern time_t dumptime; /* time that this dump begins */ 59 extern time_t dumpdate; /* time that this dump was made */ 60 extern char command; /* operation being performed */ 61 extern FILE *terminal; /* file descriptor for the terminal input */ 62 extern int Bcvt; /* need byte swapping on inodes and dirs */ 63 extern int oldinofmt; /* reading tape with FreeBSD 1 format inodes */ 64 65 /* 66 * Each file in the file system is described by one of these entries 67 */ 68 struct entry { 69 char *e_name; /* the current name of this entry */ 70 u_char e_namlen; /* length of this name */ 71 char e_type; /* type of this entry, see below */ 72 short e_flags; /* status flags, see below */ 73 ino_t e_ino; /* inode number in previous file sys */ 74 long e_index; /* unique index (for dumped table) */ 75 struct entry *e_parent; /* pointer to parent directory (..) */ 76 struct entry *e_sibling; /* next element in this directory (.) */ 77 struct entry *e_links; /* hard links to this inode */ 78 struct entry *e_entries; /* for directories, their entries */ 79 struct entry *e_next; /* hash chain list */ 80 }; 81 /* types */ 82 #define LEAF 1 /* non-directory entry */ 83 #define NODE 2 /* directory entry */ 84 #define LINK 4 /* synthesized type, stripped by addentry */ 85 /* flags */ 86 #define EXTRACT 0x0001 /* entry is to be replaced from the tape */ 87 #define NEW 0x0002 /* a new entry to be extracted */ 88 #define KEEP 0x0004 /* entry is not to change */ 89 #define REMOVED 0x0010 /* entry has been removed */ 90 #define TMPNAME 0x0020 /* entry has been given a temporary name */ 91 #define EXISTED 0x0040 /* directory already existed during extract */ 92 93 /* 94 * Constants associated with entry structs 95 */ 96 #define HARDLINK 1 97 #define SYMLINK 2 98 #define TMPHDR "RSTTMP" 99 100 /* 101 * The entry describes the next file available on the tape 102 */ 103 extern struct context { 104 short action; /* action being taken on this file */ 105 mode_t mode; /* mode of file */ 106 ino_t ino; /* inumber of file */ 107 uid_t uid; /* file owner */ 108 gid_t gid; /* file group */ 109 int file_flags; /* status flags (chflags) */ 110 int rdev; /* device number of file */ 111 time_t atime_sec; /* access time seconds */ 112 time_t mtime_sec; /* modified time seconds */ 113 time_t birthtime_sec; /* creation time seconds */ 114 int atime_nsec; /* access time nanoseconds */ 115 int mtime_nsec; /* modified time nanoseconds */ 116 int birthtime_nsec; /* creation time nanoseconds */ 117 int extsize; /* size of extended attribute data */ 118 off_t size; /* size of file */ 119 char *name; /* name of file */ 120 } curfile; 121 /* actions */ 122 #define USING 1 /* extracting from the tape */ 123 #define SKIP 2 /* skipping */ 124 #define UNKNOWN 3 /* disposition or starting point is unknown */ 125 126 /* 127 * Definitions for library routines operating on directories. 128 */ 129 typedef struct rstdirdesc RST_DIR; 130 131 /* 132 * Flags to setdirmodes. 133 */ 134 #define FORCE 0x0001 135 136 /* 137 * Useful macros 138 */ 139 #define TSTINO(ino, map) \ 140 (map[(u_int)((ino) - 1) / CHAR_BIT] & \ 141 (1 << ((u_int)((ino) - 1) % CHAR_BIT))) 142 #define SETINO(ino, map) \ 143 map[(u_int)((ino) - 1) / CHAR_BIT] |= \ 144 1 << ((u_int)((ino) - 1) % CHAR_BIT) 145 146 #define dprintf if (dflag) fprintf 147 #define vprintf if (vflag) fprintf 148 149 #define GOOD 1 150 #define FAIL 0 151 152 #define NFS_DR_NEWINODEFMT 0x2 /* Tape uses 4.4 BSD inode format */ 153