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dump.h revision 1.4 
      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  *	from: @(#)dump.h	5.16 (Berkeley) 5/29/91
     34  *	$Id: dump.h,v 1.4 1993/08/01 18:27:52 mycroft Exp $
     35  */
     36 
     37 #define MAXINOPB	(MAXBSIZE / sizeof(struct dinode))
     38 #define MAXNINDIR	(MAXBSIZE / sizeof(daddr_t))
     39 
     40 /*
     41  * Dump maps used to describe what is to be dumped.
     42  */
     43 int	mapsize;	/* size of the state maps */
     44 char	*usedinomap;	/* map of allocated inodes */
     45 char	*dumpdirmap;	/* map of directories to be dumped */
     46 char	*dumpinomap;	/* map of files to be dumped */
     47 /*
     48  * Map manipulation macros.
     49  */
     50 #define	SETINO(ino, map) \
     51 	map[(u_int)((ino) - 1) / NBBY] |=  1 << ((u_int)((ino) - 1) % NBBY)
     52 #define	CLRINO(ino, map) \
     53 	map[(u_int)((ino) - 1) / NBBY] &=  ~(1 << ((u_int)((ino) - 1) % NBBY))
     54 #define	TSTINO(ino, map) \
     55 	(map[(u_int)((ino) - 1) / NBBY] &  (1 << ((u_int)((ino) - 1) % NBBY)))
     56 
     57 /*
     58  *	All calculations done in 0.1" units!
     59  */
     60 char	*disk;		/* name of the disk file */
     61 char	*tape;		/* name of the tape file */
     62 char	*dumpdates;	/* name of the file containing dump date information*/
     63 char	*temp;		/* name of the file for doing rewrite of dumpdates */
     64 char	lastlevel;	/* dump level of previous dump */
     65 char	level;		/* dump level of this dump */
     66 int	uflag;		/* update flag */
     67 int	diskfd;		/* disk file descriptor */
     68 int	tapefd;		/* tape file descriptor */
     69 int	pipeout;	/* true => output to standard output */
     70 ino_t	curino;		/* current inumber; used globally */
     71 int	newtape;	/* new tape flag */
     72 int	density;	/* density in 0.1" units */
     73 long	tapesize;	/* estimated tape size, blocks */
     74 long	tsize;		/* tape size in 0.1" units */
     75 long	asize;		/* number of 0.1" units written on current tape */
     76 int	etapes;		/* estimated number of tapes */
     77 
     78 int	notify;		/* notify operator flag */
     79 int	blockswritten;	/* number of blocks written on current tape */
     80 int	tapeno;		/* current tape number */
     81 time_t	tstart_writing;	/* when started writing the first tape block */
     82 char	*processname;
     83 struct	fs *sblock;	/* the file system super block */
     84 char	buf[MAXBSIZE];
     85 long	dev_bsize;	/* block size of underlying disk device */
     86 int	dev_bshift;	/* log2(dev_bsize) */
     87 int	tp_bshift;	/* log2(TP_BSIZE) */
     88 
     89 /* operator interface functions */
     90 void	broadcast();
     91 void	lastdump();
     92 void	msg();
     93 void	msgtail();
     94 int	query();
     95 void	set_operators();
     96 void	timeest();
     97 
     98 /* mapping rouintes */
     99 long	blockest();
    100 int	mapfiles();
    101 int	mapdirs();
    102 
    103 /* file dumping routines */
    104 void	dirdump();
    105 void	blksout();
    106 void	dumpmap();
    107 void	writeheader();
    108 void	bread();
    109 
    110 /* tape writing routines */
    111 int	alloctape();
    112 void	writerec();
    113 void	dumpblock();
    114 void	flushtape();
    115 void	trewind();
    116 void	close_rewind();
    117 void	startnewtape();
    118 
    119 void	dumpabort();
    120 void	Exit();
    121 void	getfstab();
    122 void	quit();
    123 
    124 char	*rawname();
    125 struct dinode *getino();
    126 
    127 void	interrupt();		/* in case operator bangs on console */
    128 
    129 /*
    130  *	Exit status codes
    131  */
    132 #define	X_FINOK		0	/* normal exit */
    133 #define	X_REWRITE	2	/* restart writing from the check point */
    134 #define	X_ABORT		3	/* abort all of dump; don't attempt checkpointing*/
    135 
    136 #define	OPGRENT	"operator"		/* group entry to notify */
    137 #define DIALUP	"ttyd"			/* prefix for dialups */
    138 
    139 struct	fstab	*fstabsearch();	/* search in fs_file and fs_spec */
    140 
    141 /*
    142  *	The contents of the file _PATH_DUMPDATES is maintained both on
    143  *	a linked list, and then (eventually) arrayified.
    144  */
    145 struct dumpdates {
    146 	char	dd_name[MAXNAMLEN+3];
    147 	char	dd_level;
    148 	time_t	dd_ddate;
    149 };
    150 struct dumptime {
    151 	struct	dumpdates dt_value;
    152 	struct	dumptime *dt_next;
    153 };
    154 struct	dumptime *dthead;	/* head of the list version */
    155 int	nddates;		/* number of records (might be zero) */
    156 int	ddates_in;		/* we have read the increment file */
    157 struct	dumpdates **ddatev;	/* the arrayfied version */
    158 void	initdumptimes();
    159 void	getdumptime();
    160 void	putdumptime();
    161 #define	ITITERATE(i, ddp) \
    162 	for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
    163 
    164 /*
    165  *	We catch these interrupts
    166  */
    167 void	sighup();
    168 void	sigquit();
    169 void	sigill();
    170 void	sigtrap();
    171 void	sigfpe();
    172 void	sigkill();
    173 void	sigbus();
    174 void	sigsegv();
    175 void	sigsys();
    176 void	sigalrm();
    177 void	sigterm();
    178 
    179 /*
    180  * Compatibility with old systems.
    181  */
    182 #ifndef __STDC__
    183 #include <sys/file.h>
    184 #define _PATH_FSTAB	"/etc/fstab"
    185 extern char *index(), *strdup();
    186 extern char *ctime();
    187 extern int errno;
    188 #endif
    189