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NetBSD/sbin/dump/dump.h

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/* $NetBSD: dump.h,v 1.58 2020/04/05 15:25:39 joerg Exp $ */
/*-
* 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.
* 3. 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
*/
#include <machine/bswap.h>
#ifdef DUMP_LFS
#include <ufs/lfs/lfs.h>
#include <ufs/lfs/lfs_accessors.h>
#endif
#include <ufs/ufs/dinode.h>
#include <protocols/dumprestore.h>
union dinode {
struct ufs1_dinode dp1;
struct ufs2_dinode dp2;
#ifdef DUMP_LFS
struct lfs32_dinode dlp32;
struct lfs64_dinode dlp64;
#endif
};
#define DIP(dp, field) \
(is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field)
#define DIP_SET(dp, field, val) do { \
if (is_ufs2) \
(dp)->dp2.di_##field = (val); \
else \
(dp)->dp1.di_##field = (val); \
} while (0)
/*
* Filestore-independent UFS data, so code can be more easily shared
* between ffs, lfs, and maybe ext2fs and others as well.
*/
struct ufsi {
int64_t ufs_dsize; /* file system size, in sectors */
int32_t ufs_bsize; /* block size */
int32_t ufs_bshift; /* log2(ufs_bsize) */
int32_t ufs_fsize; /* fragment size */
int32_t ufs_frag; /* block size / frag size */
int32_t ufs_fsatoda; /* disk address conversion constant */
int32_t ufs_nindir; /* disk addresses per indirect block */
int32_t ufs_inopb; /* inodes per block */
int32_t ufs_maxsymlinklen; /* max symlink length */
int32_t ufs_bmask; /* block mask */
int32_t ufs_fmask; /* frag mask */
int64_t ufs_qbmask; /* ~ufs_bmask */
int64_t ufs_qfmask; /* ~ufs_fmask */
};
#define fsatoda(u,a) ((a) << (u)->ufs_fsatoda)
#define ufs_fragroundup(u,size) /* calculates roundup(size, ufs_fsize) */ \
(((size) + (u)->ufs_qfmask) & (u)->ufs_fmask)
#define ufs_blkoff(u,loc) /* calculates (loc % u->ufs_bsize) */ \
((loc) & (u)->ufs_qbmask)
#define ufs_dblksize(u,d,b) \
((((b) >= UFS_NDADDR || DIP((d), size) >= ((b)+1) << (u)->ufs_bshift \
? (u)->ufs_bsize \
: (ufs_fragroundup((u), ufs_blkoff(u, DIP((d), size)))))))
extern struct ufsi *ufsib;
/*
* Dump maps used to describe what is to be dumped.
*/
extern int mapsize; /* size of the state maps */
extern char *usedinomap; /* map of allocated inodes */
extern char *dumpdirmap; /* map of directories to be dumped */
extern char *dumpinomap; /* map of files to be dumped */
/*
* Map manipulation macros.
*/
#define SETINO(ino, map) \
map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY)
#define CLRINO(ino, map) \
map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY))
#define TSTINO(ino, map) \
(map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY)))
/*
* All calculations done in 0.1" units!
*/
extern char *disk; /* name of the disk file */
extern char *disk_dev; /* name of the raw device we are dumping */
extern const char *tape; /* name of the tape file */
extern const char *dumpdates; /* name of the file containing dump date information*/
extern const char *temp; /* name of the file for doing rewrite of dumpdates */
extern char lastlevel; /* dump level of previous dump */
extern char level; /* dump level of this dump */
extern int uflag; /* update flag */
extern const char *dumpdev; /* device name in dumpdates */
extern int eflag; /* eject flag */
extern int lflag; /* autoload flag */
extern int diskfd; /* disk file descriptor */
extern int tapefd; /* tape file descriptor */
extern int pipeout; /* true => output to standard output */
extern int trueinc; /* true => "true incremental", i.e use last 9 as ref */
extern ino_t curino; /* current inumber; used globally */
extern int newtape; /* new tape flag */
extern u_int64_t tapesize; /* estimated tape size, blocks */
extern long tsize; /* tape size in 0.1" units */
extern long asize; /* number of 0.1" units written on current tape */
extern int etapes; /* estimated number of tapes */
extern int nonodump; /* if set, do not honor UF_NODUMP user flags */
extern int unlimited; /* if set, write to end of medium */
extern int density; /* density in 0.1" units */
extern int notify; /* notify operator flag */
extern int timestamp; /* timestamp messages */
extern int blockswritten; /* number of blocks written on current tape */
extern int tapeno; /* current tape number */
extern int is_ufs2;
extern time_t tstart_writing; /* when started writing the first tape block */
extern time_t tstart_volume; /* when started writing the current volume */
extern int xferrate; /* averaged transfer rate of all volumes */
extern char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */
extern long dev_bsize; /* block size of underlying disk device */
extern int dev_bshift; /* log2(dev_bsize) */
extern int tp_bshift; /* log2(TP_BSIZE) */
extern int needswap; /* file system in swapped byte order */
/* some inline functions to help the byte-swapping mess */
static inline u_int16_t iswap16(u_int16_t);
static inline u_int32_t iswap32(u_int32_t);
static inline u_int64_t iswap64(u_int64_t);
static inline u_int16_t iswap16(u_int16_t x)
{
if (needswap)
return bswap16(x);
else
return x;
}
static inline u_int32_t iswap32(u_int32_t x)
{
if (needswap)
return bswap32(x);
else
return x;
}
static inline u_int64_t iswap64(u_int64_t x)
{
if (needswap)
return bswap64(x);
else
return x;
}
/* filestore-specific hooks */
int fs_read_sblock(char *);
struct ufsi *fs_parametrize(void);
ino_t fs_maxino(void);
void fs_mapinodes(ino_t, u_int64_t *, int *);
/* operator interface functions */
void broadcast(const char *);
void lastdump(char);
void msg(const char *, ...) __printflike(1, 2);
void msgtail(const char *, ...) __printflike(1, 2);
int query(const char *);
void quit(const char *, ...) __printflike(1, 2);
void quite(int, const char *, ...) __printflike(2, 3);
time_t do_stats(void);
void statussig(int);
void timeest(void);
time_t unctime(const char *);
/* mapping routines */
union dinode;
int64_t blockest(union dinode *);
void mapfileino(ino_t, u_int64_t *, int *);
int mapfiles(ino_t, u_int64_t *, char *, char * const *);
int mapdirs(ino_t, u_int64_t *);
/* file dumping routines */
void blksout32(int32_t *, int, ino_t);
void blksout64(int64_t *, int, ino_t);
void dumpino(union dinode *, ino_t);
#ifndef RRESTORE
void dumpmap(char *, int, ino_t);
#endif
void writeheader(ino_t);
/* data block caching */
void bread(daddr_t, char *, int);
void rawread(daddr_t, char *, int);
void initcache(int, int);
void printcachestats(void);
/* tape writing routines */
int alloctape(void);
void close_rewind(void);
void dumpblock(daddr_t, int);
void startnewtape(int);
void trewind(int);
void writerec(const char *, int);
void Exit(int) __dead;
void dumpabort(int);
void getfstab(void);
char *rawname(char *);
union dinode *getino(ino_t);
void *xcalloc(size_t, size_t);
void *xmalloc(size_t);
char *xstrdup(const char *);
/* LFS snapshot hooks */
#ifdef DUMP_LFS
int lfs_wrap_stop(char *);
void lfs_wrap_go(void);
#endif
/* rdump routines */
#if defined(RDUMP) || defined(RRESTORE)
void rmtclose(void);
int rmthost(const char *);
int rmtopen(const char *, int, int);
int rmtwrite(const char *, int);
int rmtioctl(int, int);
#endif /* RDUMP || RRESTORE */
void interrupt(int); /* 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 */
#define DIALUP "ttyd" /* prefix for dialups */
struct fstab *fstabsearch(const char *); /* search fs_file and fs_spec */
struct statvfs *mntinfosearch(const char *key);
#ifndef NAME_MAX
#define NAME_MAX 511
#endif
/*
* The contents of the file _PATH_DUMPDATES is maintained both on
* a linked list, and then (eventually) arrayified.
*/
struct dumpdates {
/* see DUMP{IN,OUT}FMT in <protocols/dumprestore.h> */
char dd_name[NAME_MAX+3];
char dd_level;
time_t dd_ddate;
};
extern int nddates; /* number of records (might be zero) */
extern 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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