dump/dump.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@cybercable.fr>, 1999
   6  *
   7  */
   8
   9 /*-
  10  * Copyright (c) 1980, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  *
  41  *      @(#)dump.h      8.2 (Berkeley) 4/28/95
  42  */
  43
  44 #define MAXINOPB        (MAXBSIZE / sizeof(struct dinode))
  45 #define MAXNINDIR       (MAXBSIZE / sizeof(daddr_t))
  46
  47 /*
  48  * Dump maps used to describe what is to be dumped.
  49  */
  50 int     mapsize;        /* size of the state maps */
  51 char    *usedinomap;    /* map of allocated inodes */
  52 char    *dumpdirmap;    /* map of directories to be dumped */
  53 char    *dumpinomap;    /* map of files to be dumped */
  54 /*
  55  * Map manipulation macros.
  56  */
  57 #define SETINO(ino, map) \
  58         map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
  59 #define CLRINO(ino, map) \
  60         map[(u_int)((ino) - 1) / NBBY] &=  ~(1 << ((u_int)((ino) - 1) % NBBY))
  61 #define TSTINO(ino, map) \
  62         (map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
  63
  64 /*
  65  *      All calculations done in 0.1" units!
  66  */
  67 char    *disk;          /* name of the disk file */
  68 char    *tape;          /* name of the tape file */
  69 char    *dumpdates;     /* name of the file containing dump date information*/
  70 char    *temp;          /* name of the file for doing rewrite of dumpdates */
  71 char    lastlevel;      /* dump level of previous dump */
  72 char    level;          /* dump level of this dump */
  73 int     uflag;          /* update flag */
  74 int     diskfd;         /* disk file descriptor */
  75 int     tapefd;         /* tape file descriptor */
  76 int     pipeout;        /* true => output to standard output */
  77 ino_t   curino;         /* current inumber; used globally */
  78 int     newtape;        /* new tape flag */
  79 int     density;        /* density in 0.1" units */
  80 long    tapesize;       /* estimated tape size, blocks */
  81 long    tsize;          /* tape size in 0.1" units */
  82 long    asize;          /* number of 0.1" units written on current tape */
  83 int     etapes;         /* estimated number of tapes */
  84 int     nonodump;       /* if set, do not honor UF_NODUMP user flags */
  85 int     unlimited;      /* if set, write to end of medium */
  86
  87 int     notify;         /* notify operator flag */
  88 int     blockswritten;  /* number of blocks written on current tape */
  89 int     tapeno;         /* current tape number */
  90 time_t  tstart_writing; /* when started writing the first tape block */
  91 time_t  tend_writing;   /* after writing the last tape block */
  92 #ifdef __linux__
  93 ext2_filsys fs;
  94 #else
  95 struct  fs *sblock;     /* the file system super block */
  96 char    sblock_buf[MAXBSIZE];
  97 #endif
  98 long    dev_bsize;      /* block size of underlying disk device */
  99 int     dev_bshift;     /* log2(dev_bsize) */
 100 int     tp_bshift;      /* log2(TP_BSIZE) */
 101
 102 #ifndef __P
 103 #include <sys/cdefs.h>
 104 #endif
 105
 106 /* operator interface functions */
 107 void    broadcast __P((char *message));
 108 void    lastdump __P((int arg));        /* int should be char */
 109 void    msg __P((const char *fmt, ...));
 110 void    msgtail __P((const char *fmt, ...));
 111 int     query __P((char *question));
 112 void    quit __P((const char *fmt, ...));
 113 void    set_operators __P((void));
 114 void    timeest __P((void));
 115 time_t  unctime __P((char *str));
 116
 117 /* mapping rouintes */
 118 struct  dinode;
 119 long    blockest __P((struct dinode *dp));
 120 int     mapfiles __P((ino_t maxino, long *tapesize));
 121 #ifdef  __linux__
 122 int     mapfilesfromdir __P((ino_t maxino, long *tapesize, char *directory));
 123 #endif
 124 int     mapdirs __P((ino_t maxino, long *tapesize));
 125
 126 /* file dumping routines */
 127 void    blksout __P((daddr_t *blkp, int frags, ino_t ino));
 128 void    bread __P((daddr_t blkno, char *buf, int size));
 129 void    dumpino __P((struct dinode *dp, ino_t ino));
 130 #ifdef  __linux__
 131 void    dumpdirino __P((struct dinode *dp, ino_t ino));
 132 #endif
 133 void    dumpmap __P((char *map, int type, ino_t ino));
 134 void    writeheader __P((ino_t ino));
 135
 136 /* tape writing routines */
 137 int     alloctape __P((void));
 138 void    close_rewind __P((void));
 139 void    dumpblock __P((daddr_t blkno, int size));
 140 void    startnewtape __P((int top));
 141 void    trewind __P((void));
 142 void    writerec __P((char *dp, int isspcl));
 143
 144 __dead void Exit __P((int status));
 145 void    dumpabort __P((int signo));
 146 void    getfstab __P((void));
 147
 148 char    *rawname __P((char *cp));
 149 struct  dinode *getino __P((ino_t inum));
 150
 151 /* rdump routines */
 152 #ifdef RDUMP
 153 void    rmtclose __P((void));
 154 int     rmthost __P((char *host));
 155 int     rmtopen __P((char *tape, int mode));
 156 int     rmtwrite __P((char *buf, int count));
 157 #endif /* RDUMP */
 158
 159 void    interrupt __P((int signo));     /* in case operator bangs on console */
 160
 161 /*
 162  *      Exit status codes
 163  */
 164 #define X_FINOK         0       /* normal exit */
 165 #define X_STARTUP       1       /* startup error */
 166 #define X_REWRITE       2       /* restart writing from the check point */
 167 #define X_ABORT         3       /* abort dump; don't attempt checkpointing */
 168
 169 #define OPGRENT "operator"              /* group entry to notify */
 170 #ifdef  __linux__
 171 #define DIALUP  "ttyS"                  /* prefix for dialups */
 172 #else
 173 #define DIALUP  "ttyd"                  /* prefix for dialups */
 174 #endif
 175
 176 struct  fstab *fstabsearch __P((char *key));    /* search fs_file and fs_spec */
 177 #ifdef  __linux__
 178 struct  fstab *fstabsearchdir __P((char *key, char *dir));      /* search fs_file and fs_spec */
 179 #endif
 180
 181 #ifndef NAME_MAX
 182 #define NAME_MAX 255
 183 #endif
 184
 185 /*
 186  *      The contents of the file _PATH_DUMPDATES is maintained both on
 187  *      a linked list, and then (eventually) arrayified.
 188  */
 189 struct dumpdates {
 190         char    dd_name[NAME_MAX+3];
 191         char    dd_level;
 192         time_t  dd_ddate;
 193 };
 194 struct dumptime {
 195         struct  dumpdates dt_value;
 196         struct  dumptime *dt_next;
 197 };
 198 struct  dumptime *dthead;       /* head of the list version */
 199 int     nddates;                /* number of records (might be zero) */
 200 int     ddates_in;              /* we have read the increment file */
 201 struct  dumpdates **ddatev;     /* the arrayfied version */
 202 void    initdumptimes __P((void));
 203 void    getdumptime __P((void));
 204 void    putdumptime __P((void));
 205 #define ITITERATE(i, ddp) \
 206         for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
 207
 208 void    sig __P((int signo));
 209
 210 /*
 211  * Compatibility with old systems.
 212  */
 213 #ifdef COMPAT
 214 #include <sys/file.h>
 215 #define strchr(a,b)     index(a,b)
 216 #define strrchr(a,b)    rindex(a,b)
 217 extern char *strdup(), *ctime();
 218 extern int read(), write();
 219 extern int errno;
 220 #endif
 221
 222 #ifdef  __linux__
 223 #define DUMP_CURRENT_REV        0
 224 #endif
 225
 226 #ifndef __linux__
 227 #ifndef _PATH_UTMP
 228 #define _PATH_UTMP      "/etc/utmp"
 229 #endif
 230 #ifndef _PATH_FSTAB
 231 #define _PATH_FSTAB     "/etc/fstab"
 232 #endif
 233 #endif
 234
 235 #ifdef sunos
 236 extern char *calloc();
 237 extern char *malloc();
 238 extern long atol();
 239 extern char *strcpy();
 240 extern char *strncpy();
 241 extern char *strcat();
 242 extern time_t time();
 243 extern void endgrent();
 244 extern void exit();
 245 extern off_t lseek();
 246 extern const char *strerror();
 247 #endif