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dump.h

/*-
 * Copyright (c) 1980, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *    @(#)dump.h  8.2 (Berkeley) 4/28/95
 *
 * $FreeBSD: src/sbin/dump/dump.h,v 1.28 2007/02/26 08:15:56 mckusick Exp $
 */

/*
 * Dump maps used to describe what is to be dumped.
 */
int   mapsize;    /* size of the state maps */
char  *usedinomap;      /* map of allocated inodes */
char  *dumpdirmap;      /* map of directories to be dumped */
char  *dumpinomap;      /* map of files to be dumped */
/*
 * Map manipulation macros.
 */
#define     SETINO(ino, map) \
      map[(u_int)((ino) - 1) / CHAR_BIT] |= \
          1 << ((u_int)((ino) - 1) % CHAR_BIT)
#define     CLRINO(ino, map) \
      map[(u_int)((ino) - 1) / CHAR_BIT] &= \
          ~(1 << ((u_int)((ino) - 1) % CHAR_BIT))
#define     TSTINO(ino, map) \
      (map[(u_int)((ino) - 1) / CHAR_BIT] & \
          (1 << ((u_int)((ino) - 1) % CHAR_BIT)))

/*
 *    All calculations done in 0.1" units!
 */
char  *disk;            /* name of the disk file */
char  *tape;            /* name of the tape file */
char  *popenout;  /* popen(3) per-"tape" command */
char  *dumpdates; /* name of the file containing dump date information*/
char  *temp;            /* name of the file for doing rewrite of dumpdates */
char  lastlevel;  /* dump level of previous dump */
char  level;            /* dump level of this dump */
int   uflag;            /* update flag */
int   diskfd;           /* disk file descriptor */
int   tapefd;           /* tape file descriptor */
int   pipeout;    /* true => output to standard output */
ino_t curino;           /* current inumber; used globally */
int   newtape;    /* new tape flag */
int   density;    /* density in 0.1" units */
long  tapesize;   /* estimated tape size, blocks */
long  tsize;            /* tape size in 0.1" units */
long  asize;            /* number of 0.1" units written on current tape */
int   etapes;           /* estimated number of tapes */
int   nonodump;   /* if set, do not honor UF_NODUMP user flags */
int   unlimited;  /* if set, write to end of medium */
int   cachesize;  /* size of block cache in bytes */

int   notify;           /* notify operator flag */
int   blockswritten;    /* number of blocks written on current tape */
int   tapeno;           /* current tape number */
time_t      tstart_writing;   /* when started writing the first tape block */
time_t      tend_writing;     /* after writing the last tape block */
int   passno;           /* current dump pass number */
struct      fs *sblock; /* the file system super block */
char  sblock_buf[MAXBSIZE];
long  dev_bsize;  /* block size of underlying disk device */
int   dev_bshift; /* log2(dev_bsize) */
int   tp_bshift;  /* log2(TP_BSIZE) */

/* operator interface functions */
void  broadcast(const char *message);
void  infosch(int);
void  lastdump(int arg);      /* int should be char */
void  msg(const char *fmt, ...) __printflike(1, 2);
void  msgtail(const char *fmt, ...) __printflike(1, 2);
int   query(const char *question);
void  quit(const char *fmt, ...) __printflike(1, 2);
void  timeest(void);
time_t      unctime(char *str);

/* mapping rouintes */
union dinode;
int   mapfiles(ino_t maxino, long *tapesize);
int   mapdirs(ino_t maxino, long *tapesize);

/* file dumping routines */
void  bread(ufs2_daddr_t blkno, char *buf, int size);
ssize_t cread(int fd, void *buf, size_t nbytes, off_t offset);
void  dumpino(union dinode *dp, ino_t ino);
void  dumpmap(char *map, int type, ino_t ino);
void  writeheader(ino_t ino);

/* tape writing routines */
int   alloctape(void);
void  close_rewind(void);
void  dumpblock(ufs2_daddr_t blkno, int size);
void  startnewtape(int top);
void  trewind(void);
void  writerec(char *dp, int isspcl);

void  Exit(int status) __dead2;
void  dumpabort(int signo);
void  dump_getfstab(void);

char  *rawname(char *cp);
union dinode *getino(ino_t inum, int *mode);

/* rdump routines */
#ifdef RDUMP
void  rmtclose(void);
int   rmthost(const char *host);
int   rmtopen(const char *tape, int mode);
int   rmtwrite(const char *buf, int count);
#endif /* RDUMP */

void  interrupt(int signo);   /* in case operator bangs on console */

/*
 *    Exit status codes
 */
#define     X_FINOK           0     /* normal exit */
#define     X_STARTUP   1     /* startup error */
#define     X_REWRITE   2     /* restart writing from the check point */
#define     X_ABORT           3     /* abort dump; don't attempt checkpointing */

#define     OPGRENT     "operator"        /* group entry to notify */

struct      fstab *fstabsearch(const char *key); /* search fs_file and fs_spec */

#ifndef NAME_MAX
#define NAME_MAX 255
#endif

/*
 *    The contents of the file _PATH_DUMPDATES is maintained both on
 *    a linked list, and then (eventually) arrayified.
 */
struct dumpdates {
      char  dd_name[NAME_MAX+3];
      char  dd_level;
      time_t      dd_ddate;
};
int   nddates;          /* number of records (might be zero) */
struct      dumpdates **ddatev;     /* the arrayfied version */
void  initdumptimes(void);
void  getdumptime(void);
void  putdumptime(void);
#define     ITITERATE(i, ddp) \
      if (ddatev != NULL) \
            for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])

void  sig(int signo);

#ifndef     _PATH_FSTAB
#define     _PATH_FSTAB "/etc/fstab"
#endif

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