restore/restore.h

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <pop@noos.fr>, 1999-2000
   6  *      Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
   7  *
   8  *      $Id: restore.h,v 1.16 2001/07/18 12:54:06 stelian Exp $
   9  */
  10
  11 /*
  12  * Copyright (c) 1983, 1993
  13  *      The Regents of the University of California.  All rights reserved.
  14  * (c) UNIX System Laboratories, Inc.
  15  * All or some portions of this file are derived from material licensed
  16  * to the University of California by American Telephone and Telegraph
  17  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  18  * the permission of UNIX System Laboratories, Inc.
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted provided that the following conditions
  22  * are met:
  23  * 1. Redistributions of source code must retain the above copyright
  24  *    notice, this list of conditions and the following disclaimer.
  25  * 2. Redistributions in binary form must reproduce the above copyright
  26  *    notice, this list of conditions and the following disclaimer in the
  27  *    documentation and/or other materials provided with the distribution.
  28  * 3. All advertising materials mentioning features or use of this software
  29  *    must display the following acknowledgement:
  30  *      This product includes software developed by the University of
  31  *      California, Berkeley and its contributors.
  32  * 4. Neither the name of the University nor the names of its contributors
  33  *    may be used to endorse or promote products derived from this software
  34  *    without specific prior written permission.
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  37  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  39  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  40  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  41  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  42  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  44  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  45  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  46  * SUCH DAMAGE.
  47  */
  48
  49 #include <config.h>
  50 #include <protocols/dumprestore.h>
  51 /*
  52  * Flags
  53  */
  54 extern int      cvtflag;        /* convert from old to new tape format */
  55 extern int      bflag;          /* set input block size */
  56 extern int      dflag;          /* print out debugging info */
  57 extern int      hflag;          /* restore heirarchies */
  58 extern int      mflag;          /* restore by name instead of inode number */
  59 extern int      Mflag;          /* multi-volume restore */
  60 extern int      Nflag;          /* do not write the disk */
  61 extern int      uflag;          /* unlink symlink targets */
  62 extern int      vflag;          /* print out actions taken */
  63 extern int      yflag;          /* always try to recover from tape errors */
  64 extern int      zflag;          /* tape is in compressed format */
  65 extern char*    bot_script;     /* beginning of tape script */
  66 /*
  67  * Global variables
  68  */
  69 extern char     *dumpmap;       /* map of inodes on this dump tape */
  70 extern char     *usedinomap;    /* map of inodes that are in use on this fs */
  71 extern dump_ino_t maxino;       /* highest numbered inode in this file system */
  72 extern long     dumpnum;        /* location of the dump on this tape */
  73 extern long     volno;          /* current volume being read */
  74 extern long     ntrec;          /* number of TP_BSIZE records per tape block */
  75 extern time_t   dumptime;       /* time that this dump begins */
  76 extern time_t   dumpdate;       /* time that this dump was made */
  77 extern char     command;        /* opration being performed */
  78 extern FILE     *terminal;      /* file descriptor for the terminal input */
  79 extern char     *tmpdir;        /* name of temp directory */
  80 extern int      oldinofmt;      /* reading tape with old format inodes */
  81 extern int      Bcvt;           /* need byte swapping on inodes and dirs */
  82 extern int      compare_ignore_not_found;
  83                                 /* used to compare incremental dumps, */
  84                                 /* so messages about "not found" files */
  85                                 /* isn't seen. */
  86 extern int      compare_errors; /* did we encounter any compare errors? */
  87 extern char     filesys[NAMELEN];/* name of dumped filesystem */
  88
  89 /*
  90  * Each file in the file system is described by one of these entries
  91  */
  92 struct entry {
  93         char    *e_name;                /* the current name of this entry */
  94         u_char  e_namlen;               /* length of this name */
  95         char    e_type;                 /* type of this entry, see below */
  96         short   e_flags;                /* status flags, see below */
  97         dump_ino_t e_ino;               /* inode number in previous file sys */
  98         long    e_index;                /* unique index (for dumpped table) */
  99         struct  entry *e_parent;        /* pointer to parent directory (..) */
 100         struct  entry *e_sibling;       /* next element in this directory (.) */
 101         struct  entry *e_links;         /* hard links to this inode */
 102         struct  entry *e_entries;       /* for directories, their entries */
 103         struct  entry *e_next;          /* hash chain list */
 104 };
 105 /* types */
 106 #define LEAF 1                  /* non-directory entry */
 107 #define NODE 2                  /* directory entry */
 108 #define LINK 4                  /* synthesized type, stripped by addentry */
 109 /* flags */
 110 #define EXTRACT         0x0001  /* entry is to be replaced from the tape */
 111 #define NEW             0x0002  /* a new entry to be extracted */
 112 #define KEEP            0x0004  /* entry is not to change */
 113 #define REMOVED         0x0010  /* entry has been removed */
 114 #define TMPNAME         0x0020  /* entry has been given a temporary name */
 115 #define EXISTED         0x0040  /* directory already existed during extract */
 116
 117 /*
 118  * Constants associated with entry structs
 119  */
 120 #define HARDLINK        1
 121 #define SYMLINK         2
 122 #define TMPHDR          "RSTTMP"
 123
 124 /*
 125  * The entry describes the next file available on the tape
 126  */
 127 struct context {
 128         char    *name;          /* name of file */
 129         dump_ino_t ino;         /* inumber of file */
 130 #ifdef  __linux__
 131         struct  new_bsd_inode *dip;     /* pointer to inode */
 132 #else
 133         struct  dinode *dip;    /* pointer to inode */
 134 #endif
 135         char    action;         /* action being taken on this file */
 136 } curfile;
 137 /* actions */
 138 #define USING   1       /* extracting from the tape */
 139 #define SKIP    2       /* skipping */
 140 #define UNKNOWN 3       /* disposition or starting point is unknown */
 141
 142 /*
 143  * Definitions for library routines operating on directories.
 144  */
 145 typedef struct rstdirdesc RST_DIR;
 146
 147 /*
 148  * Flags to setdirmodes.
 149  */
 150 #define FORCE   0x0001
 151
 152 /*
 153  * Useful macros
 154  */
 155 #define TSTINO(ino, map) \
 156         (map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
 157 #define SETINO(ino, map) \
 158         map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
 159
 160 #define Dprintf         if (dflag) fprintf
 161 #define Vprintf         if (vflag) fprintf
 162
 163 #define GOOD 1
 164 #define FAIL 0
 165
 166 #ifdef USE_QFA
 167 #define QFA_MAGIC       "495115637697"
 168 #define QFA_VERSION     "1.0"
 169 FILE    *gTapeposfp;
 170 char    *gTapeposfile;
 171 char    gTps[255];
 172 long    gSeekstart;
 173 int     tapeposflag;
 174 #endif /* USE_QFA */