c51d70c690
use backup methods other than files and tapes. The -P argument is a normal sh(1) pipeline with either $DUMP_VOLUME or $RESTORE_VOLUME defined in the environment, respectively. For example, I can back up my home to three DVD+R[W]s as so: Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/ad0s2e 40028550 10093140 26733126 27% /home green# dump -0 -L -C16 -B4589840 -P 'growisofs -Z /dev/cd0=/dev/fd/0' /home
180 lines
6.3 KiB
C
180 lines
6.3 KiB
C
/*-
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dump.h 8.2 (Berkeley) 4/28/95
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*
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* $FreeBSD$
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*/
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/*
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* Dump maps used to describe what is to be dumped.
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*/
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int mapsize; /* size of the state maps */
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char *usedinomap; /* map of allocated inodes */
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char *dumpdirmap; /* map of directories to be dumped */
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char *dumpinomap; /* map of files to be dumped */
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/*
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* Map manipulation macros.
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*/
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#define SETINO(ino, map) \
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map[(u_int)((ino) - 1) / CHAR_BIT] |= \
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1 << ((u_int)((ino) - 1) % CHAR_BIT)
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#define CLRINO(ino, map) \
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map[(u_int)((ino) - 1) / CHAR_BIT] &= \
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~(1 << ((u_int)((ino) - 1) % CHAR_BIT))
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#define TSTINO(ino, map) \
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(map[(u_int)((ino) - 1) / CHAR_BIT] & \
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(1 << ((u_int)((ino) - 1) % CHAR_BIT)))
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/*
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* All calculations done in 0.1" units!
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*/
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char *disk; /* name of the disk file */
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char *tape; /* name of the tape file */
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char *popenout; /* popen(3) per-"tape" command */
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char *dumpdates; /* name of the file containing dump date information*/
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char *temp; /* name of the file for doing rewrite of dumpdates */
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char lastlevel; /* dump level of previous dump */
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char level; /* dump level of this dump */
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int uflag; /* update flag */
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int diskfd; /* disk file descriptor */
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int tapefd; /* tape file descriptor */
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int pipeout; /* true => output to standard output */
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ino_t curino; /* current inumber; used globally */
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int newtape; /* new tape flag */
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int density; /* density in 0.1" units */
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long tapesize; /* estimated tape size, blocks */
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long tsize; /* tape size in 0.1" units */
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long asize; /* number of 0.1" units written on current tape */
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int etapes; /* estimated number of tapes */
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int nonodump; /* if set, do not honor UF_NODUMP user flags */
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int unlimited; /* if set, write to end of medium */
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int cachesize; /* size of block cache in bytes */
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int notify; /* notify operator flag */
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int blockswritten; /* number of blocks written on current tape */
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int tapeno; /* current tape number */
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time_t tstart_writing; /* when started writing the first tape block */
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time_t tend_writing; /* after writing the last tape block */
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int passno; /* current dump pass number */
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struct fs *sblock; /* the file system super block */
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char sblock_buf[MAXBSIZE];
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long dev_bsize; /* block size of underlying disk device */
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int dev_bshift; /* log2(dev_bsize) */
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int tp_bshift; /* log2(TP_BSIZE) */
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/* operator interface functions */
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void broadcast(const char *message);
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void infosch(int);
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void lastdump(int arg); /* int should be char */
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void msg(const char *fmt, ...) __printflike(1, 2);
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void msgtail(const char *fmt, ...) __printflike(1, 2);
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int query(const char *question);
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void quit(const char *fmt, ...) __printflike(1, 2);
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void timeest(void);
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time_t unctime(char *str);
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/* mapping rouintes */
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union dinode;
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int mapfiles(ino_t maxino, long *tapesize);
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int mapdirs(ino_t maxino, long *tapesize);
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/* file dumping routines */
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void ufs1_blksout(ufs1_daddr_t *blkp, int frags, ino_t ino);
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void ufs2_blksout(ufs2_daddr_t *blkp, int frags, ino_t ino);
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void bread(ufs2_daddr_t blkno, char *buf, int size);
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ssize_t cread(int fd, void *buf, size_t nbytes, off_t offset);
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void dumpino(union dinode *dp, ino_t ino);
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void dumpmap(char *map, int type, ino_t ino);
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void writeheader(ino_t ino);
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/* tape writing routines */
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int alloctape(void);
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void close_rewind(void);
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void dumpblock(ufs2_daddr_t blkno, int size);
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void startnewtape(int top);
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void trewind(void);
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void writerec(char *dp, int isspcl);
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void Exit(int status) __dead2;
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void dumpabort(int signo);
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void dump_getfstab(void);
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char *rawname(char *cp);
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union dinode *getino(ino_t inum, int *mode);
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/* rdump routines */
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#ifdef RDUMP
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void rmtclose(void);
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int rmthost(const char *host);
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int rmtopen(const char *tape, int mode);
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int rmtwrite(const char *buf, int count);
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#endif /* RDUMP */
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void interrupt(int signo); /* in case operator bangs on console */
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/*
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* Exit status codes
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*/
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#define X_FINOK 0 /* normal exit */
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#define X_STARTUP 1 /* startup error */
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#define X_REWRITE 2 /* restart writing from the check point */
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#define X_ABORT 3 /* abort dump; don't attempt checkpointing */
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#define OPGRENT "operator" /* group entry to notify */
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struct fstab *fstabsearch(const char *key); /* search fs_file and fs_spec */
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#ifndef NAME_MAX
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#define NAME_MAX 255
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#endif
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/*
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* The contents of the file _PATH_DUMPDATES is maintained both on
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* a linked list, and then (eventually) arrayified.
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*/
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struct dumpdates {
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char dd_name[NAME_MAX+3];
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char dd_level;
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time_t dd_ddate;
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};
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int nddates; /* number of records (might be zero) */
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int ddates_in; /* we have read the increment file */
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struct dumpdates **ddatev; /* the arrayfied version */
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void initdumptimes(void);
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void getdumptime(void);
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void putdumptime(void);
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#define ITITERATE(i, ddp) \
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for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i])
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void sig(int signo);
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#ifndef _PATH_FSTAB
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#define _PATH_FSTAB "/etc/fstab"
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#endif
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