1 /* $NetBSD: restore.h,v 1.23 2021/06/19 13:56:35 christos Exp $ */ 2 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 * @(#)restore.h 8.3 (Berkeley) 9/13/94 37 */ 38 39 /* 40 * Flags 41 */ 42 extern int cvtflag; /* convert from old to new tape format */ 43 extern int bflag; /* set input block size */ 44 extern int Dflag; /* output digest of files */ 45 extern int dflag; /* print out debugging info */ 46 extern int hflag; /* restore hierarchies */ 47 extern int mflag; /* restore by name instead of inode number */ 48 extern int Nflag; /* do not write the disk */ 49 extern int vflag; /* print out actions taken */ 50 extern int uflag; /* unlink file before writing to it */ 51 extern int yflag; /* always try to recover from tape errors */ 52 extern int dotflag; /* restore owner/mode of "." directory */ 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 int32_t dumpnum; /* location of the dump on this tape */ 60 extern int32_t volno; /* current volume being read */ 61 extern int32_t 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; /* operation being performed */ 65 extern size_t pagesize; /* system page size */ 66 extern FILE *terminal; /* file descriptor for the terminal input */ 67 extern const char *tmpdir; /* where to store temporary files */ 68 extern int oldinofmt; /* reading tape with old format inodes */ 69 extern int Bcvt; /* need byte swapping on inodes and dirs */ 70 extern FILE *Mtreefile; /* file descriptor for the mtree file */ 71 72 union digest_context; 73 74 struct digest_desc { 75 const char *dd_name; 76 void (*dd_init)(void *); 77 void (*dd_update)(union digest_context *, const void *, u_int); 78 char *(*dd_end)(void *, char *); 79 }; 80 extern const struct digest_desc *ddesc; 81 extern const struct digest_desc md5_desc; 82 extern const struct digest_desc rmd160_desc; 83 extern const struct digest_desc sha1_desc; 84 85 /* 86 * Each file in the file system is described by one of these entries 87 */ 88 struct entry { 89 char *e_name; /* the current name of this entry */ 90 u_char e_namlen; /* length of this name */ 91 char e_type; /* type of this entry, see below */ 92 int16_t e_flags; /* status flags, see below */ 93 ino_t e_ino; /* inode number in previous file sys */ 94 int32_t e_index; /* unique index (for dumped table) */ 95 struct entry *e_parent; /* pointer to parent directory (..) */ 96 struct entry *e_sibling; /* next element in this directory (.) */ 97 struct entry *e_links; /* hard links to this inode */ 98 struct entry *e_entries; /* for directories, their entries */ 99 struct entry *e_next; /* hash chain list */ 100 }; 101 /* types */ 102 #define LEAF 1 /* non-directory entry */ 103 #define NODE 2 /* directory entry */ 104 #define LINK 4 /* synthesized type, stripped by addentry */ 105 /* flags */ 106 #define EXTRACT 0x0001 /* entry is to be replaced from the tape */ 107 #define NEW 0x0002 /* a new entry to be extracted */ 108 #define KEEP 0x0004 /* entry is not to change */ 109 #define REMOVED 0x0010 /* entry has been removed */ 110 #define TMPNAME 0x0020 /* entry has been given a temporary name */ 111 #define EXISTED 0x0040 /* directory already existed during extract */ 112 113 /* 114 * Constants associated with entry structs 115 */ 116 #define HARDLINK 1 117 #define SYMLINK 2 118 #define TMPHDR "RSTTMP" 119 120 /* 121 * The entry describes the next file available on the tape 122 */ 123 extern struct context { 124 short action; /* action being taken on this file */ 125 mode_t mode; /* mode of file */ 126 ino_t ino; /* inumber of file */ 127 uid_t uid; /* file owner */ 128 gid_t gid; /* file group */ 129 int file_flags; /* status flags (chflags) */ 130 int rdev; /* device number of file */ 131 time_t atime_sec; /* access time seconds */ 132 time_t mtime_sec; /* modified time seconds */ 133 time_t birthtime_sec; /* creation time seconds */ 134 int atime_nsec; /* access time nanoseconds */ 135 int mtime_nsec; /* modified time nanoseconds */ 136 int birthtime_nsec; /* creation time nanoseconds */ 137 int extsize; /* size of extended attribute data */ 138 off_t size; /* size of file */ 139 const char *name; /* name of file */ 140 } curfile; 141 /* actions */ 142 #define USING 1 /* extracting from the tape */ 143 #define SKIP 2 /* skipping */ 144 #define UNKNOWN 3 /* disposition or starting point is unknown */ 145 146 /* 147 * Definitions for library routines operating on directories. 148 */ 149 typedef struct rstdirdesc RST_DIR; 150 151 /* 152 * Flags to setdirmodes. 153 */ 154 #define FORCE 0x0001 155 156 /* 157 * Useful macros 158 */ 159 #define TSTINO(ino, map) \ 160 (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) 161 #define SETINO(ino, map) \ 162 map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) 163 164 #define dprintf if (dflag) fprintf 165 #define vprintf if (vflag) fprintf 166 167 #define GOOD 1 168 #define FAIL 0 169