sbin/restore/restore.h

   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * @(#)restore.h 8.3 (Berkeley) 9/13/94
  35  */
  36
  37 /*
  38  * Flags
  39  */
  40 extern int      cvtflag;        /* convert from old to new tape format */
  41 extern int      bflag;          /* set input block size */
  42 extern int      dflag;          /* print out debugging info */
  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 ufs1_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;        /* opration being performed */
  61 extern FILE     *terminal;      /* file descriptor for the terminal input */
  62 extern int      oldinofmt;      /* reading tape with old format inodes */
  63 extern int      Bcvt;           /* need byte swapping on inodes and dirs */
  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         ufs1_ino_t e_ino;               /* inode number in previous file sys */
  74         long    e_index;                /* unique index (for dumpped 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 struct context {
 104         const char      *name;          /* name of file */
 105         ufs1_ino_t ino;         /* inumber of file */
 106         struct  ufs1_dinode *dip;       /* pointer to inode */
 107         char    action;         /* action being taken on this file */
 108 } curfile;
 109 /* actions */
 110 #define USING   1       /* extracting from the tape */
 111 #define SKIP    2       /* skipping */
 112 #define UNKNOWN 3       /* disposition or starting point is unknown */
 113
 114 /*
 115  * Definitions for library routines operating on directories.
 116  */
 117 typedef struct rstdirdesc RST_DIR;
 118
 119 /*
 120  * Flags to setdirmodes.
 121  */
 122 #define FORCE   0x0001
 123
 124 /*
 125  * Useful macros
 126  */
 127 #define TSTINO(ino, map) \
 128         (map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
 129 #define SETINO(ino, map) \
 130         map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
 131
 132 #define dprintf         if (dflag) fprintf
 133 #define vprintf         if (vflag) fprintf
 134
 135 #define GOOD 1
 136 #define FAIL 0