xref: /freebsd/sbin/dump/dump.h (revision 271c3a9060f2ee55607ebe146523f888e1db2654)
1 /*-
2  * Copyright (c) 1980, 1993
3  *	The Regents of the University of California.  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  * 4. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  *	@(#)dump.h	8.2 (Berkeley) 4/28/95
30  *
31  * $FreeBSD$
32  */
33 
34 /*
35  * Dump maps used to describe what is to be dumped.
36  */
37 int	mapsize;	/* size of the state maps */
38 char	*usedinomap;	/* map of allocated inodes */
39 char	*dumpdirmap;	/* map of directories to be dumped */
40 char	*dumpinomap;	/* map of files to be dumped */
41 /*
42  * Map manipulation macros.
43  */
44 #define	SETINO(ino, map) \
45 	map[(u_int)((ino) - 1) / CHAR_BIT] |= \
46 	    1 << ((u_int)((ino) - 1) % CHAR_BIT)
47 #define	CLRINO(ino, map) \
48 	map[(u_int)((ino) - 1) / CHAR_BIT] &= \
49 	    ~(1 << ((u_int)((ino) - 1) % CHAR_BIT))
50 #define	TSTINO(ino, map) \
51 	(map[(u_int)((ino) - 1) / CHAR_BIT] & \
52 	    (1 << ((u_int)((ino) - 1) % CHAR_BIT)))
53 
54 /*
55  *	All calculations done in 0.1" units!
56  */
57 char	*disk;		/* name of the disk file */
58 char	*tape;		/* name of the tape file */
59 char	*popenout;	/* popen(3) per-"tape" command */
60 char	*dumpdates;	/* name of the file containing dump date information*/
61 char	*temp;		/* name of the file for doing rewrite of dumpdates */
62 int	lastlevel;	/* dump level of previous dump */
63 int	level;		/* dump level of this dump */
64 int	uflag;		/* update flag */
65 int	diskfd;		/* disk file descriptor */
66 int	tapefd;		/* tape file descriptor */
67 int	pipeout;	/* true => output to standard output */
68 ino_t	curino;		/* current inumber; used globally */
69 int	newtape;	/* new tape flag */
70 int	density;	/* density in 0.1" units */
71 long	tapesize;	/* estimated tape size, blocks */
72 long	tsize;		/* tape size in 0.1" units */
73 long	asize;		/* number of 0.1" units written on current tape */
74 int	etapes;		/* estimated number of tapes */
75 int	nonodump;	/* if set, do not honor UF_NODUMP user flags */
76 int	unlimited;	/* if set, write to end of medium */
77 int	cachesize;	/* size of block cache in bytes */
78 int	rsync_friendly;	/* be friendly with rsync */
79 
80 int	notify;		/* notify operator flag */
81 int	blockswritten;	/* number of blocks written on current tape */
82 int	tapeno;		/* current tape number */
83 time_t	tstart_writing;	/* when started writing the first tape block */
84 time_t	tend_writing;	/* after writing the last tape block */
85 int	passno;		/* current dump pass number */
86 struct	fs *sblock;	/* the file system super block */
87 char	sblock_buf[MAXBSIZE];
88 long	dev_bsize;	/* block size of underlying disk device */
89 int	dev_bshift;	/* log2(dev_bsize) */
90 int	tp_bshift;	/* log2(TP_BSIZE) */
91 
92 /* operator interface functions */
93 void	broadcast(const char *message);
94 void	infosch(int);
95 void	lastdump(int arg);	/* int should be char */
96 void	msg(const char *fmt, ...) __printflike(1, 2);
97 void	msgtail(const char *fmt, ...) __printflike(1, 2);
98 int	query(const char *question);
99 void	quit(const char *fmt, ...) __printflike(1, 2);
100 void	timeest(void);
101 time_t	unctime(char *str);
102 
103 /* mapping rouintes */
104 union	dinode;
105 int	mapfiles(ino_t maxino, long *tapesize);
106 int	mapdirs(ino_t maxino, long *tapesize);
107 
108 /* file dumping routines */
109 void	bread(ufs2_daddr_t blkno, char *buf, int size);
110 ssize_t cread(int fd, void *buf, size_t nbytes, off_t offset);
111 void	dumpino(union dinode *dp, ino_t ino);
112 void	dumpmap(char *map, int type, ino_t ino);
113 void	writeheader(ino_t ino);
114 
115 /* tape writing routines */
116 int	alloctape(void);
117 void	close_rewind(void);
118 void	dumpblock(ufs2_daddr_t blkno, int size);
119 void	startnewtape(int top);
120 void	trewind(void);
121 void	writerec(char *dp, int isspcl);
122 
123 void	Exit(int status) __dead2;
124 void	dumpabort(int signo);
125 void	dump_getfstab(void);
126 
127 char	*rawname(char *cp);
128 union	dinode *getino(ino_t inum, int *mode);
129 
130 /* rdump routines */
131 #ifdef RDUMP
132 void	rmtclose(void);
133 int	rmthost(const char *host);
134 int	rmtopen(const char *tape, int mode);
135 int	rmtwrite(const char *buf, int count);
136 #endif /* RDUMP */
137 
138 void	interrupt(int signo);	/* in case operator bangs on console */
139 
140 /*
141  *	Exit status codes
142  */
143 #define	X_FINOK		0	/* normal exit */
144 #define	X_STARTUP	1	/* startup error */
145 #define	X_REWRITE	2	/* restart writing from the check point */
146 #define	X_ABORT		3	/* abort dump; don't attempt checkpointing */
147 
148 #define	OPGRENT	"operator"		/* group entry to notify */
149 
150 struct	fstab *fstabsearch(const char *key); /* search fs_file and fs_spec */
151 
152 #ifndef NAME_MAX
153 #define NAME_MAX 255
154 #endif
155 
156 /*
157  *	The contents of the file _PATH_DUMPDATES is maintained both on
158  *	a linked list, and then (eventually) arrayified.
159  */
160 struct dumpdates {
161 	char	dd_name[NAME_MAX+3];
162 	int	dd_level;
163 	time_t	dd_ddate;
164 };
165 int	nddates;		/* number of records (might be zero) */
166 struct	dumpdates **ddatev;	/* the arrayfied version */
167 void	initdumptimes(void);
168 void	getdumptime(void);
169 void	putdumptime(void);
170 #define	ITITERATE(i, ddp) \
171     	if (ddatev != NULL) \
172 		for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
173 
174 #define	DUMPOUTFMT	"%-32s %d %s"		/* for printf */
175 						/* name, level, ctime(date) */
176 #define	DUMPINFMT	"%32s %d %[^\n]\n"	/* inverse for scanf */
177 
178 void	sig(int signo);
179 
180 #ifndef	_PATH_FSTAB
181 #define	_PATH_FSTAB	"/etc/fstab"
182 #endif
183