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@noos.fr>, 1999-2000
   6  *      Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
   7  *
   8  *      $Id: dump.h,v 1.22 2001/03/20 10:02:48 stelian Exp $
   9  */
  10
  11 /*-
  12  * Copyright (c) 1980, 1993
  13  *      The Regents of the University of California.  All rights reserved.
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions
  17  * are met:
  18  * 1. Redistributions of source code must retain the above copyright
  19  *    notice, this list of conditions and the following disclaimer.
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in the
  22  *    documentation and/or other materials provided with the distribution.
  23  * 3. All advertising materials mentioning features or use of this software
  24  *    must display the following acknowledgement:
  25  *      This product includes software developed by the University of
  26  *      California, Berkeley and its contributors.
  27  * 4. Neither the name of the University nor the names of its contributors
  28  *    may be used to endorse or promote products derived from this software
  29  *    without specific prior written permission.
  30  *
  31  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  32  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  33  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  34  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  35  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  39  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  40  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  41  * SUCH DAMAGE.
  42  */
  43
  44 #include <config.h>
  45 #include <protocols/dumprestore.h>
  46
  47 #define MAXINOPB        (MAXBSIZE / sizeof(struct dinode))
  48 #define MAXNINDIR       (MAXBSIZE / sizeof(daddr_t))
  49
  50 /*
  51  * Dump maps used to describe what is to be dumped.
  52  */
  53 int     mapsize;        /* size of the state maps */
  54 char    *usedinomap;    /* map of allocated inodes */
  55 char    *dumpdirmap;    /* map of directories to be dumped */
  56 char    *dumpinomap;    /* map of files to be dumped */
  57 /*
  58  * Map manipulation macros.
  59  */
  60 #define SETINO(ino, map) \
  61         map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
  62 #define CLRINO(ino, map) \
  63         map[(u_int)((ino) - 1) / NBBY] &=  ~(1 << ((u_int)((ino) - 1) % NBBY))
  64 #define TSTINO(ino, map) \
  65         (map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
  66
  67 /*
  68  *      All calculations done in 0.1" units!
  69  */
  70 const char *disk;               /* name of the disk file */
  71 char    tape[MAXPATHLEN];       /* name of the tape file */
  72 char    *tapeprefix;    /* prefix of the tape file */
  73 char    *dumpdates;     /* name of the file containing dump date information*/
  74 char    lastlevel;      /* dump level of previous dump */
  75 char    level;          /* dump level of this dump */
  76 int     uflag;          /* update flag */
  77 int     Mflag;          /* multi-volume flag */
  78 char    *eot_script;    /* end of volume script fiag */
  79 int     diskfd;         /* disk file descriptor */
  80 int     tapefd;         /* tape file descriptor */
  81 int     pipeout;        /* true => output to standard output */
  82 dump_ino_t curino;      /* current inumber; used globally */
  83 int     newtape;        /* new tape flag */
  84 int     density;        /* density in 0.1" units */
  85 long    tapesize;       /* estimated tape size, blocks */
  86 long    tsize;          /* tape size in 0.1" units */
  87 long    asize;          /* number of 0.1" units written on current tape */
  88 int     etapes;         /* estimated number of tapes */
  89 int     nonodump;       /* if set, do not honor UF_NODUMP user flags */
  90 int     unlimited;      /* if set, write to end of medium */
  91 int     compressed;     /* if set, dump is to be compressed */
  92 long long bytes_written;/* total bytes written to tape */
  93 long    uncomprblks;    /* uncompressed blocks written to tape */
  94 int     notify;         /* notify operator flag */
  95 int     blockswritten;  /* number of blocks written on current tape */
  96 int     tapeno;         /* current tape number */
  97 time_t  tstart_writing; /* when started writing the first tape block */
  98 time_t  tend_writing;   /* after writing the last tape block */
  99 #ifdef __linux__
 100 ext2_filsys fs;
 101 #else
 102 struct  fs *sblock;     /* the file system super block */
 103 char    sblock_buf[MAXBSIZE];
 104 #endif
 105 long    xferrate;       /* averaged transfer rate of all volumes */
 106 long    dev_bsize;      /* block size of underlying disk device */
 107 int     dev_bshift;     /* log2(dev_bsize) */
 108 int     tp_bshift;      /* log2(TP_BSIZE) */
 109
 110 #ifndef __P
 111 #include <sys/cdefs.h>
 112 #endif
 113
 114 /* operator interface functions */
 115 void    broadcast __P((const char *message));
 116 time_t  do_stats __P((void));
 117 void    lastdump __P((char arg));
 118 void    msg __P((const char *fmt, ...));
 119 void    msgtail __P((const char *fmt, ...));
 120 int     query __P((const char *question));
 121 void    quit __P((const char *fmt, ...));
 122 void    set_operators __P((void));
 123 #if defined(SIGINFO)
 124 void    statussig __P((int signo));
 125 #endif
 126 void    timeest __P((void));
 127 time_t  unctime __P((const char *str));
 128
 129 /* mapping rouintes */
 130 struct  dinode;
 131 long    blockest __P((struct dinode const *dp));
 132 int     mapfiles __P((dump_ino_t maxino, long *tapesize));
 133 #ifdef  __linux__
 134 int     mapfilesfromdir __P((dump_ino_t maxino, long *tapesize, char *directory));
 135 #endif
 136 int     mapdirs __P((dump_ino_t maxino, long *tapesize));
 137
 138 /* file dumping routines */
 139 void    blksout __P((daddr_t *blkp, int frags, dump_ino_t ino));
 140 void    bread __P((daddr_t blkno, char *buf, int size));
 141 void    dumpino __P((struct dinode *dp, dump_ino_t ino));
 142 #ifdef  __linux__
 143 void    dumpdirino __P((struct dinode *dp, dump_ino_t ino));
 144 #endif
 145 void    dumpmap __P((char *map, int type, dump_ino_t ino));
 146 void    writeheader __P((dump_ino_t ino));
 147
 148 /* tape writing routines */
 149 int     alloctape __P((void));
 150 void    close_rewind __P((void));
 151 void    dumpblock __P((daddr_t blkno, int size));
 152 void    startnewtape __P((int top));
 153 time_t  trewind __P((void));
 154 void    writerec __P((const void *dp, int isspcl));
 155 char    *mktimeest __P((time_t tnow));
 156
 157 void    Exit __P((int status));
 158 void    dumpabort __P((int signo));
 159 void    getfstab __P((void));
 160
 161 const char *rawname __P((const char *cp));
 162 struct  dinode *getino __P((dump_ino_t inum));
 163
 164 /* rdump routines */
 165 #ifdef RDUMP
 166 int     rmthost __P((const char *host));
 167 int     rmtopen __P((const char *tape, int mode));
 168 void    rmtclose __P((void));
 169 int     rmtread __P((char *buf, size_t count));
 170 int     rmtwrite __P((const char *buf, size_t count));
 171 int     rmtseek __P((int offset, int pos));
 172 struct mtget * rmtstatus __P((void));
 173 int     rmtioctl __P((int cmd, int count));
 174 #endif /* RDUMP */
 175
 176 void    interrupt __P((int signo));     /* in case operator bangs on console */
 177
 178 /*
 179  *      Exit status codes
 180  */
 181 #define X_FINOK         0       /* normal exit */
 182 #define X_STARTUP       1       /* startup error */
 183 #define X_REWRITE       2       /* restart writing from the check point */
 184 #define X_ABORT         3       /* abort dump; don't attempt checkpointing */
 185
 186 #define OPGRENT "operator"              /* group entry to notify */
 187 #ifdef  __linux__
 188 #define DIALUP  "ttyS"                  /* prefix for dialups */
 189 #else
 190 #define DIALUP  "ttyd"                  /* prefix for dialups */
 191 #endif
 192
 193 struct  fstab *fstabsearch __P((const char *key));      /* search fs_file and fs_spec */
 194 #ifdef  __linux__
 195 struct  fstab *fstabsearchdir __P((const char *key, char *dir));        /* search fs_file and fs_spec */
 196 #endif
 197
 198 /*
 199  *      The contents of the file _PATH_DUMPDATES is maintained both on
 200  *      a linked list, and then (eventually) arrayified.
 201  */
 202 struct dumpdates {
 203         char    dd_name[MAXPATHLEN+3];
 204         struct fstab *dd_fstab;
 205         char    dd_level;
 206         time_t  dd_ddate;
 207 };
 208 struct dumptime {
 209         struct  dumpdates dt_value;
 210         struct  dumptime *dt_next;
 211 };
 212 struct  dumptime *dthead;       /* head of the list version */
 213 int     nddates;                /* number of records (might be zero) */
 214 int     ddates_in;              /* we have read the increment file */
 215 struct  dumpdates **ddatev;     /* the arrayfied version */
 216 void    initdumptimes __P((int));
 217 void    getdumptime __P((int));
 218 void    putdumptime __P((void));
 219 #define ITITERATE(i, ddp) \
 220         for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
 221
 222 void    sig __P((int signo));
 223
 224 /*
 225  * Compatibility with old systems.
 226  */
 227 #ifdef COMPAT
 228 #include <sys/file.h>
 229 #define strchr(a,b)     index(a,b)
 230 #define strrchr(a,b)    rindex(a,b)
 231 extern char *strdup(), *ctime();
 232 extern int read(), write();
 233 extern int errno;
 234 #endif
 235
 236 #ifdef  __linux__
 237 #define DUMP_CURRENT_REV        1
 238
 239 int dump_fs_open(const char *disk, ext2_filsys *fs);
 240 #endif
 241
 242 #ifndef __linux__
 243 #ifndef _PATH_UTMP
 244 #define _PATH_UTMP      "/etc/utmp"
 245 #endif
 246 #ifndef _PATH_FSTAB
 247 #define _PATH_FSTAB     "/etc/fstab"
 248 #endif
 249 #endif
 250
 251 #ifdef sunos
 252 extern char *calloc();
 253 extern char *malloc();
 254 extern long atol();
 255 extern char *strcpy();
 256 extern char *strncpy();
 257 extern char *strcat();
 258 extern time_t time();
 259 extern void endgrent();
 260 extern void exit();
 261 extern off_t lseek();
 262 extern const char *strerror();
 263 #endif
 264
 265                                 /* 04-Feb-00 ILC */
 266 #define IEXCLUDE_MAXNUM 256     /* max size of inode exclude list */
 267