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dump.h revision 1.2 
      1 /*-
      2  * Copyright (c) 1980 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)dump.h	5.16 (Berkeley) 5/29/91
     34  *
     35  *	$Id: dump.h,v 1.2 1993/03/22 08:04:00 cgd Exp $
     36  */
     37 
     38 #define MAXINOPB	(MAXBSIZE / sizeof(struct dinode))
     39 #define MAXNINDIR	(MAXBSIZE / sizeof(daddr_t))
     40 
     41 /*
     42  * Dump maps used to describe what is to be dumped.
     43  */
     44 int	mapsize;	/* size of the state maps */
     45 char	*usedinomap;	/* map of allocated inodes */
     46 char	*dumpdirmap;	/* map of directories to be dumped */
     47 char	*dumpinomap;	/* map of files to be dumped */
     48 /*
     49  * Map manipulation macros.
     50  */
     51 #define	SETINO(ino, map) \
     52 	map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
     53 #define	CLRINO(ino, map) \
     54 	map[(u_int)((ino) - 1) / NBBY] &=  ~(1 << ((u_int)((ino) - 1) % NBBY))
     55 #define	TSTINO(ino, map) \
     56 	(map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
     57 
     58 /*
     59  *	All calculations done in 0.1" units!
     60  */
     61 char	*disk;		/* name of the disk file */
     62 char	*tape;		/* name of the tape file */
     63 char	*dumpdates;	/* name of the file containing dump date information*/
     64 char	*temp;		/* name of the file for doing rewrite of dumpdates */
     65 char	lastlevel;	/* dump level of previous dump */
     66 char	level;		/* dump level of this dump */
     67 int	uflag;		/* update flag */
     68 int	diskfd;		/* disk file descriptor */
     69 int	tapefd;		/* tape file descriptor */
     70 int	pipeout;	/* true => output to standard output */
     71 ino_t	curino;		/* current inumber; used globally */
     72 int	newtape;	/* new tape flag */
     73 int	density;	/* density in 0.1" units */
     74 long	tapesize;	/* estimated tape size, blocks */
     75 long	tsize;		/* tape size in 0.1" units */
     76 long	asize;		/* number of 0.1" units written on current tape */
     77 int	etapes;		/* estimated number of tapes */
     78 
     79 int	notify;		/* notify operator flag */
     80 int	blockswritten;	/* number of blocks written on current tape */
     81 int	tapeno;		/* current tape number */
     82 time_t	tstart_writing;	/* when started writing the first tape block */
     83 char	*processname;
     84 struct	fs *sblock;	/* the file system super block */
     85 char	buf[MAXBSIZE];
     86 long	dev_bsize;	/* block size of underlying disk device */
     87 int	dev_bshift;	/* log2(dev_bsize) */
     88 int	tp_bshift;	/* log2(TP_BSIZE) */
     89 
     90 /* operator interface functions */
     91 void	broadcast();
     92 void	lastdump();
     93 void	msg();
     94 void	msgtail();
     95 int	query();
     96 void	set_operators();
     97 void	timeest();
     98 
     99 /* mapping rouintes */
    100 long	blockest();
    101 int	mapfiles();
    102 int	mapdirs();
    103 
    104 /* file dumping routines */
    105 void	dirdump();
    106 void	blksout();
    107 void	dumpmap();
    108 void	writeheader();
    109 void	bread();
    110 
    111 /* tape writing routines */
    112 int	alloctape();
    113 void	writerec();
    114 void	dumpblock();
    115 void	flushtape();
    116 void	trewind();
    117 void	close_rewind();
    118 void	startnewtape();
    119 
    120 void	dumpabort();
    121 void	Exit();
    122 void	getfstab();
    123 void	quit();
    124 
    125 char	*rawname();
    126 struct dinode *getino();
    127 
    128 void	interrupt();		/* in case operator bangs on console */
    129 
    130 /*
    131  *	Exit status codes
    132  */
    133 #define	X_FINOK		0	/* normal exit */
    134 #define	X_REWRITE	2	/* restart writing from the check point */
    135 #define	X_ABORT		3	/* abort all of dump; don't attempt checkpointing*/
    136 
    137 #define	OPGRENT	"operator"		/* group entry to notify */
    138 #define DIALUP	"ttyd"			/* prefix for dialups */
    139 
    140 struct	fstab	*fstabsearch();	/* search in fs_file and fs_spec */
    141 
    142 /*
    143  *	The contents of the file _PATH_DUMPDATES is maintained both on
    144  *	a linked list, and then (eventually) arrayified.
    145  */
    146 struct dumpdates {
    147 	char	dd_name[MAXNAMLEN+3];
    148 	char	dd_level;
    149 	time_t	dd_ddate;
    150 };
    151 struct dumptime {
    152 	struct	dumpdates dt_value;
    153 	struct	dumptime *dt_next;
    154 };
    155 struct	dumptime *dthead;	/* head of the list version */
    156 int	nddates;		/* number of records (might be zero) */
    157 int	ddates_in;		/* we have read the increment file */
    158 struct	dumpdates **ddatev;	/* the arrayfied version */
    159 void	initdumptimes();
    160 void	getdumptime();
    161 void	putdumptime();
    162 #define	ITITERATE(i, ddp) \
    163 	for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
    164 
    165 /*
    166  *	We catch these interrupts
    167  */
    168 void	sighup();
    169 void	sigquit();
    170 void	sigill();
    171 void	sigtrap();
    172 void	sigfpe();
    173 void	sigkill();
    174 void	sigbus();
    175 void	sigsegv();
    176 void	sigsys();
    177 void	sigalrm();
    178 void	sigterm();
    179 
    180 /*
    181  * Compatibility with old systems.
    182  */
    183 #ifndef __STDC__
    184 #include <sys/file.h>
    185 #define _PATH_FSTAB	"/etc/fstab"
    186 extern char *index(), *strdup();
    187 extern char *ctime();
    188 extern int errno;
    189 #endif
    190