[unix-history] / usr / src / sbin / dump / main.c

/*-
 * Copyright (c) 1980, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)main.c	5.25 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#ifdef sunos
#include <sys/vnode.h>

#include <ufs/inode.h>
#include <ufs/fs.h>
#else
#include <ufs/ffs/fs.h>
#include <ufs/ufs/dinode.h>
#endif

#include <protocols/dumprestore.h>

#include <errno.h>
#include <fcntl.h>
#include <fstab.h>
#include <signal.h>
#include <stdio.h>
#ifdef __STDC__
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#else
extern	char *rindex();
extern char *calloc();
#endif

#include "dump.h"
#include "pathnames.h"

int	notify = 0;	/* notify operator flag */
int	blockswritten = 0;	/* number of blocks written on current tape */
int	tapeno = 0;	/* current tape number */
int	density = 0;	/* density in bytes/0.1" */
int	ntrec = NTREC;	/* # tape blocks in each tape record */
int	cartridge = 0;	/* Assume non-cartridge tape */
long	dev_bsize = 1;	/* recalculated below */
long	blocksperfile;	/* output blocks per file */
char	*host = NULL;	/* remote host (if any) */

int
main(argc, argv)
	int argc;
	char **argv;
{
	register ino_t ino;
	register int dirty; 
	register struct dinode *dp;
	register struct	fstab *dt;
	register char *map;
	register char *cp;
	int i, anydirskipped, bflag = 0, Tflag = 0;
	float fetapes;
	ino_t maxino;

	spcl.c_date = 0;
	(void) time((time_t *) &(spcl.c_date));

	tsize = 0;	/* Default later, based on 'c' option for cart tapes */
	tape = _PATH_DEFTAPE;
	dumpdates = _PATH_DUMPDATES;
	temp = _PATH_DTMP;
	if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
		quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
	level = '0';
	argv++;
	argc -= 2;
	for (cp = *argv++; *cp; cp++) {
		switch (*cp) {
		case '-':
			continue;

		case 'w':
			lastdump('w');	/* tell us only what has to be done */
			exit(0);

		case 'W':		/* what to do */
			lastdump('W');	/* tell us state of what is done */
			exit(0);	/* do nothing else */

		case 'f':		/* output file */
			if (argc < 1)
				break;
			tape = *argv++;
			argc--;
			continue;

		case 'd':		/* density, in bits per inch */
			if (argc < 1)
				break;
			density = atoi(*argv) / 10;
			if (density < 1) {
				(void) fprintf(stderr, "bad density \"%s\"\n",
				    *argv);
				Exit(X_ABORT);
			}
			argc--;
			argv++;
			if (density >= 625 && !bflag)
				ntrec = HIGHDENSITYTREC;
			continue;

		case 's':		/* tape size, feet */
			if (argc < 1)
				break;
			tsize = atol(*argv);
			if (tsize < 1) {
				(void) fprintf(stderr, "bad size \"%s\"\n",
				    *argv);
				Exit(X_ABORT);
			}
			argc--;
			argv++;
			tsize *= 12 * 10;
			continue;

		case 'T':		/* time of last dump */
			if (argc < 1)
				break;
			spcl.c_ddate = unctime(*argv);
			if (spcl.c_ddate < 0) {
				(void) fprintf(stderr, "bad time \"%s\"\n",
				    *argv);
				Exit(X_ABORT);
			}
			Tflag++;
			lastlevel = '?';
			argc--;
			argv++;
			continue;

		case 'b':		/* blocks per tape write */
			if (argc < 1)
				break;
			bflag++;
			ntrec = atoi(*argv);
			if (ntrec < 1) {
				(void) fprintf(stderr, "%s \"%s\"\n",
				    "bad number of blocks per write ", *argv);
				Exit(X_ABORT);
			}
			argc--;
			argv++;
			continue;

		case 'B':		/* blocks per output file */
			if (argc < 1)
				break;
			blocksperfile = atol(*argv);
			if (blocksperfile < 1) {
				(void) fprintf(stderr, "%s \"%s\"\n",
				    "bad number of blocks per file ", *argv);
				Exit(X_ABORT);
			}
			argc--;
			argv++;
			continue;

		case 'c':		/* Tape is cart. not 9-track */
			cartridge++;
			continue;

		case '0':		/* dump level */
		case '1':
		case '2':
		case '3':
		case '4':
		case '5':
		case '6':
		case '7':
		case '8':
		case '9':
			level = *cp;
			continue;

		case 'u':		/* update /etc/dumpdates */
			uflag++;
			continue;

		case 'n':		/* notify operators */
			notify++;
			continue;

		default:
			(void) fprintf(stderr, "bad key '%c'\n", *cp);
			Exit(X_ABORT);
		}
		(void) fprintf(stderr, "missing argument to '%c'\n", *cp);
		Exit(X_ABORT);
	}
	if (argc < 1) {
		(void) fprintf(stderr, "Must specify disk or filesystem\n");
		Exit(X_ABORT);
	} else {
		disk = *argv++;
		argc--;
	}
	if (argc >= 1) {
		(void) fprintf(stderr, "Unknown arguments to dump:");
		while (argc--)
			(void) fprintf(stderr, " %s", *argv++);
		(void) fprintf(stderr, "\n");
		Exit(X_ABORT);
	}
	if (Tflag && uflag) {
	        (void) fprintf(stderr,
		    "You cannot use the T and u flags together.\n");
		Exit(X_ABORT);
	}
	if (strcmp(tape, "-") == 0) {
		pipeout++;
		tape = "standard output";
	}

	if (blocksperfile)
		blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
	else {
		/*
		 * Determine how to default tape size and density
		 *
		 *         	density				tape size
		 * 9-track	1600 bpi (160 bytes/.1")	2300 ft.
		 * 9-track	6250 bpi (625 bytes/.1")	2300 ft.
		 * cartridge	8000 bpi (100 bytes/.1")	1700 ft.
		 *						(450*4 - slop)
		 */
		if (density == 0)
			density = cartridge ? 100 : 160;
		if (tsize == 0)
			tsize = cartridge ? 1700L*120L : 2300L*120L;
	}

	if (index(tape, ':')) {
		host = tape;
		tape = index(host, ':');
		*tape++ = 0;
#ifdef RDUMP
		if (rmthost(host) == 0)
			exit(X_ABORT);
#else
		(void) fprintf(stderr, "remote dump not enabled\n");
		exit(X_ABORT);
#endif
	}
	(void) setuid(getuid()); /* rmthost() is the only reason to be setuid */

	if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
		signal(SIGHUP, sig);
	if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
		signal(SIGTRAP, sig);
	if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
		signal(SIGFPE, sig);
	if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
		signal(SIGBUS, sig);
	if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
		signal(SIGSEGV, sig);
	if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
		signal(SIGTERM, sig);
	if (signal(SIGINT, interrupt) == SIG_IGN)
		signal(SIGINT, SIG_IGN);

	set_operators();	/* /etc/group snarfed */
	getfstab();		/* /etc/fstab snarfed */
	/*
	 *	disk can be either the full special file name,
	 *	the suffix of the special file name,
	 *	the special name missing the leading '/',
	 *	the file system name with or without the leading '/'.
	 */
	dt = fstabsearch(disk);
	if (dt != 0) {
		disk = rawname(dt->fs_spec);
		(void) strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
		(void) strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
	} else {
		(void) strncpy(spcl.c_dev, disk, NAMELEN);
		(void) strncpy(spcl.c_filesys, "an unlisted file system",
		    NAMELEN);
	}
	(void) strcpy(spcl.c_label, "none");
	(void) gethostname(spcl.c_host, NAMELEN);
	spcl.c_level = level - '0';
	spcl.c_type = TS_TAPE;
	if (!Tflag)
	        getdumptime();		/* /etc/dumpdates snarfed */

	msg("Date of this level %c dump: %s", level,
		spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 	msg("Date of last level %c dump: %s", lastlevel,
		spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
	msg("Dumping %s ", disk);
	if (dt != 0)
		msgtail("(%s) ", dt->fs_file);
	if (host)
		msgtail("to %s on host %s\n", tape, host);
	else
		msgtail("to %s\n", tape);

	if ((diskfd = open(disk, O_RDONLY)) < 0) {
		msg("Cannot open %s\n", disk);
		Exit(X_ABORT);
	}
	sync();
	sblock = (struct fs *)sblock_buf;
	bread(SBOFF, (char *) sblock, SBSIZE);
	if (sblock->fs_magic != FS_MAGIC)
		quit("bad sblock magic number\n");
	dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
	dev_bshift = ffs(dev_bsize) - 1;
	if (dev_bsize != (1 << dev_bshift))
		quit("dev_bsize (%d) is not a power of 2", dev_bsize);
	tp_bshift = ffs(TP_BSIZE) - 1;
	if (TP_BSIZE != (1 << tp_bshift))
		quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
#ifdef FS_44INODEFMT
	if (sblock->fs_inodefmt >= FS_44INODEFMT)
		spcl.c_flags |= DR_NEWINODEFMT;
#endif
	maxino = sblock->fs_ipg * sblock->fs_ncg - 1;
	mapsize = roundup(howmany(sblock->fs_ipg * sblock->fs_ncg, NBBY),
		TP_BSIZE);
	usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
	dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
	dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
	tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);

	msg("mapping (Pass I) [regular files]\n");
	anydirskipped = mapfiles(maxino, &tapesize);

	msg("mapping (Pass II) [directories]\n");
	while (anydirskipped) {
		anydirskipped = mapdirs(maxino, &tapesize);
	}

	if (pipeout)
		tapesize += 10;	/* 10 trailer blocks */
	else {
		if (blocksperfile)
			fetapes = (float) tapesize / blocksperfile;
		else if (cartridge) {
			/* Estimate number of tapes, assuming streaming stops at
			   the end of each block written, and not in mid-block.
			   Assume no erroneous blocks; this can be compensated
			   for with an artificially low tape size. */
			fetapes = 
			(	  tapesize	/* blocks */
				* TP_BSIZE	/* bytes/block */
				* (1.0/density)	/* 0.1" / byte */
			  +
				  tapesize	/* blocks */
				* (1.0/ntrec)	/* streaming-stops per block */
				* 15.48		/* 0.1" / streaming-stop */
			) * (1.0 / tsize );	/* tape / 0.1" */
		} else {
			/* Estimate number of tapes, for old fashioned 9-track
			   tape */
			int tenthsperirg = (density == 625) ? 3 : 7;
			fetapes =
			(	  tapesize	/* blocks */
				* TP_BSIZE	/* bytes / block */
				* (1.0/density)	/* 0.1" / byte */
			  +
				  tapesize	/* blocks */
				* (1.0/ntrec)	/* IRG's / block */
				* tenthsperirg	/* 0.1" / IRG */
			) * (1.0 / tsize );	/* tape / 0.1" */
		}
		etapes = fetapes;		/* truncating assignment */
		etapes++;
		/* count the dumped inodes map on each additional tape */
		tapesize += (etapes - 1) *
			(howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
		tapesize += etapes + 10;	/* headers + 10 trailer blks */
	}
	if (pipeout)
		msg("estimated %ld tape blocks.\n", tapesize);
	else
		msg("estimated %ld tape blocks on %3.2f tape(s).\n",
		    tapesize, fetapes);

	/*
	 * Allocate tape buffer
	 */
	if (!alloctape())
		quit("can't allocate tape buffers - try a smaller blocking factor.\n");

	startnewtape(1);
	(void) time((time_t *)&(tstart_writing));
	dumpmap(usedinomap, TS_CLRI, maxino);

	msg("dumping (Pass III) [directories]\n");
	for (map = dumpdirmap, ino = 0; ino < maxino; ) {
		if ((ino % NBBY) == 0)
			dirty = *map++;
		else
			dirty >>= 1;
		ino++;
		if ((dirty & 1) == 0)
			continue;
		/*
		 * Skip directory inodes deleted and maybe reallocated
		 */
		dp = getino(ino);
		if ((dp->di_mode & IFMT) != IFDIR)
			continue;
		(void) dumpino(dp, ino);
	}

	msg("dumping (Pass IV) [regular files]\n");
	for (map = dumpinomap, ino = 0; ino < maxino; ) {
		int mode;

		if ((ino % NBBY) == 0)
			dirty = *map++;
		else
			dirty >>= 1;
		ino++;
		if ((dirty & 1) == 0)
			continue;
		/*
		 * Skip inodes deleted and reallocated as directories.
		 */
		dp = getino(ino);
		mode = dp->di_mode & IFMT;
		if (mode == IFDIR)
			continue;
		(void) dumpino(dp, ino);
	}

	spcl.c_type = TS_END;
	for (i = 0; i < ntrec; i++)
		writeheader(maxino);
	if (pipeout)
		msg("DUMP: %ld tape blocks\n",spcl.c_tapea);
	else
		msg("DUMP: %ld tape blocks on %d volumes(s)\n",
		    spcl.c_tapea, spcl.c_volume);
	putdumptime();
	trewind();
	broadcast("DUMP IS DONE!\7\7\n");
	msg("DUMP IS DONE\n");
	Exit(X_FINOK);
	/* NOTREACHED */
}

void
sig(signo)
	int signo;
{
	switch(signo) {
	case SIGALRM:
	case SIGBUS:
	case SIGFPE:
	case SIGHUP:
	case SIGTERM:
	case SIGTRAP:
		if (pipeout)
			quit("Signal on pipe: cannot recover\n");
		msg("Rewriting attempted as response to unknown signal.\n");
		(void) fflush(stderr);
		(void) fflush(stdout);
		close_rewind();
		exit(X_REWRITE);
		/* NOTREACHED */
	case SIGSEGV:
		msg("SIGSEGV: ABORTING!\n");
		(void) signal(SIGSEGV, SIG_DFL);
		(void) kill(0, SIGSEGV);
		/* NOTREACHED */
	}
}

char *
rawname(cp)
	char *cp;
{
	static char rawbuf[32];
	char *dp = rindex(cp, '/');

	if (dp == 0)
		return (0);
	*dp = 0;
	(void) strcpy(rawbuf, cp);
	*dp = '/';
	(void) strcat(rawbuf, "/r");
	(void) strcat(rawbuf, dp+1);
	return (rawbuf);
}

#ifdef sunos
char *
strerror(errnum)
	int errnum;
{
	extern int sys_nerr;
	extern char *sys_errlist[];

	if (errnum < sys_nerr) {
		return(sys_errlist[errnum]);
	} else {
		return("bogus errno in strerror");
	}
}
#endif
Commit	Line	Data
461723e7 KM	1	/*-
	2	* Copyright (c) 1980, 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
76797561 DF	6	*/
	7
	8	#ifndef lint
461723e7 KM	9	char copyright[] =
	10	"@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
	11	All rights reserved.\n";
	12	#endif /* not lint */
	13
	14	#ifndef lint
0289322c	15	static char sccsid[] = "@(#)main.c 5.25 (Berkeley) %G%";
5c3d7d9e	16	#endif /* not lint */
76797561	17
cdce5e6c	18	#include <sys/param.h>
0289322c KM	19	#include <sys/time.h>
	20	#ifdef sunos
	21	#include <sys/vnode.h>
	22
	23	#include <ufs/inode.h>
25c5efb9	24	#include <ufs/fs.h>
cdce5e6c	25	#else
3d66b39b	26	#include <ufs/ffs/fs.h>
25c5efb9	27	#include <ufs/ufs/dinode.h>
13298603	28	#endif
0289322c KM	29
	30	#include <protocols/dumprestore.h>
	31
	32	#include <errno.h>
5c3d7d9e	33	#include <fcntl.h>
13298603	34	#include <fstab.h>
0289322c	35	#include <signal.h>
13298603 KB	36	#include <stdio.h>
13298603 KB	37	#ifdef __STDC__
13298603 KB	38	#include <stdlib.h>
13298603 KB	39	#include <string.h>
0289322c KM	40	#include <unistd.h>
	41	#else
	42	extern char *rindex();
	43	extern char *calloc();
13298603	44	#endif
0289322c	45
13298603	46	#include "dump.h"
2e433f8d	47	#include "pathnames.h"
0393c389 BJ	48
	49	int notify = 0; /* notify operator flag */
	50	int blockswritten = 0; /* number of blocks written on current tape */
	51	int tapeno = 0; /* current tape number */
1ddebffe SL	52	int density = 0; /* density in bytes/0.1" */
	53	int ntrec = NTREC; /* # tape blocks in each tape record */
	54	int cartridge = 0; /* Assume non-cartridge tape */
ff96014a	55	long dev_bsize = 1; /* recalculated below */
70c0f96a	56	long blocksperfile; /* output blocks per file */
ae744076	57	char host = NULL; / remote host (if any) */
0393c389	58
0289322c	59	int
0393c389	60	main(argc, argv)
6175ef8c	61	int argc;
13298603	62	char **argv;
0393c389	63	{
6175ef8c	64	register ino_t ino;
0a008f8c	65	register int dirty;
6175ef8c KM	66	register struct dinode *dp;
	67	register struct fstab *dt;
	68	register char *map;
	69	register char *cp;
25c5efb9	70	int i, anydirskipped, bflag = 0, Tflag = 0;
6175ef8c KM	71	float fetapes;
6175ef8c KM	72	ino_t maxino;
0393c389	73
ae744076	74	spcl.c_date = 0;
25c5efb9	75	(void) time((time_t *) &(spcl.c_date));
0393c389	76
1ddebffe	77	tsize = 0; /* Default later, based on 'c' option for cart tapes */
7abf8d65	78	tape = _PATH_DEFTAPE;
6175ef8c	79	dumpdates = _PATH_DUMPDATES;
2e433f8d	80	temp = _PATH_DTMP;
5c3d7d9e CT	81	if (TP_BSIZE / DEV_BSIZE == 0 \|\| TP_BSIZE % DEV_BSIZE != 0)
5c3d7d9e CT	82	quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
6175ef8c KM	83	level = '0';
	84	argv++;
	85	argc -= 2;
	86	for (cp = argv++; cp; cp++) {
	87	switch (*cp) {
	88	case '-':
	89	continue;
	90
	91	case 'w':
	92	lastdump('w'); /* tell us only what has to be done */
0289322c	93	exit(0);
6175ef8c KM	94
	95	case 'W': /* what to do */
	96	lastdump('W'); /* tell us state of what is done */
0289322c	97	exit(0); /* do nothing else */
6175ef8c KM	98
	99	case 'f': /* output file */
	100	if (argc < 1)
	101	break;
	102	tape = *argv++;
0393c389	103	argc--;
6175ef8c	104	continue;
0393c389	105
6175ef8c KM	106	case 'd': /* density, in bits per inch */
	107	if (argc < 1)
	108	break;
0393c389	109	density = atoi(*argv) / 10;
6175ef8c	110	if (density < 1) {
25c5efb9 KM	111	(void) fprintf(stderr, "bad density \"%s\"\n",
25c5efb9 KM	112	*argv);
6175ef8c KM	113	Exit(X_ABORT);
	114	}
	115	argc--;
	116	argv++;
a1f8d10b KM	117	if (density >= 625 && !bflag)
a1f8d10b KM	118	ntrec = HIGHDENSITYTREC;
6175ef8c	119	continue;
0393c389	120
6175ef8c KM	121	case 's': /* tape size, feet */
	122	if (argc < 1)
	123	break;
0393c389	124	tsize = atol(*argv);
6175ef8c	125	if (tsize < 1) {
25c5efb9 KM	126	(void) fprintf(stderr, "bad size \"%s\"\n",
25c5efb9 KM	127	*argv);
6175ef8c KM	128	Exit(X_ABORT);
6175ef8c KM	129	}
1ddebffe	130	argc--;
6175ef8c KM	131	argv++;
	132	tsize = 12 10;
	133	continue;
	134
25c5efb9 KM	135	case 'T': /* time of last dump */
	136	if (argc < 1)
	137	break;
	138	spcl.c_ddate = unctime(*argv);
	139	if (spcl.c_ddate < 0) {
	140	(void) fprintf(stderr, "bad time \"%s\"\n",
	141	*argv);
	142	Exit(X_ABORT);
	143	}
	144	Tflag++;
	145	lastlevel = '?';
	146	argc--;
	147	argv++;
	148	continue;
	149
6175ef8c KM	150	case 'b': /* blocks per tape write */
	151	if (argc < 1)
	152	break;
a1f8d10b	153	bflag++;
0a008f8c	154	ntrec = atoi(*argv);
6175ef8c	155	if (ntrec < 1) {
25c5efb9	156	(void) fprintf(stderr, "%s \"%s\"\n",
6175ef8c	157	"bad number of blocks per write ", *argv);
70c0f96a KM	158	Exit(X_ABORT);
70c0f96a KM	159	}
70c0f96a	160	argc--;
6175ef8c KM	161	argv++;
	162	continue;
	163
	164	case 'B': /* blocks per output file */
	165	if (argc < 1)
	166	break;
70c0f96a	167	blocksperfile = atol(*argv);
6175ef8c	168	if (blocksperfile < 1) {
25c5efb9	169	(void) fprintf(stderr, "%s \"%s\"\n",
6175ef8c KM	170	"bad number of blocks per file ", *argv);
	171	Exit(X_ABORT);
	172	}
	173	argc--;
	174	argv++;
	175	continue;
	176
	177	case 'c': /* Tape is cart. not 9-track */
	178	cartridge++;
	179	continue;
	180
	181	case '0': /* dump level */
	182	case '1':
	183	case '2':
	184	case '3':
	185	case '4':
	186	case '5':
	187	case '6':
	188	case '7':
	189	case '8':
	190	case '9':
	191	level = *cp;
	192	continue;
	193
	194	case 'u': /* update /etc/dumpdates */
	195	uflag++;
	196	continue;
	197
	198	case 'n': /* notify operators */
	199	notify++;
	200	continue;
	201
	202	default:
25c5efb9	203	(void) fprintf(stderr, "bad key '%c'\n", *cp);
6175ef8c	204	Exit(X_ABORT);
1ddebffe	205	}
25c5efb9	206	(void) fprintf(stderr, "missing argument to '%c'\n", *cp);
0393c389 BJ	207	Exit(X_ABORT);
0393c389 BJ	208	}
6175ef8c	209	if (argc < 1) {
25c5efb9	210	(void) fprintf(stderr, "Must specify disk or filesystem\n");
6175ef8c KM	211	Exit(X_ABORT);
	212	} else {
	213	disk = *argv++;
0393c389	214	argc--;
6175ef8c KM	215	}
6175ef8c KM	216	if (argc >= 1) {
25c5efb9	217	(void) fprintf(stderr, "Unknown arguments to dump:");
6175ef8c	218	while (argc--)
25c5efb9 KM	219	(void) fprintf(stderr, " %s", *argv++);
	220	(void) fprintf(stderr, "\n");
	221	Exit(X_ABORT);
	222	}
	223	if (Tflag && uflag) {
	224	(void) fprintf(stderr,
	225	"You cannot use the T and u flags together.\n");
6175ef8c	226	Exit(X_ABORT);
0393c389	227	}
a47b7e40 KM	228	if (strcmp(tape, "-") == 0) {
	229	pipeout++;
	230	tape = "standard output";
	231	}
1ddebffe	232
70c0f96a KM	233	if (blocksperfile)
	234	blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
	235	else {
	236	/*
	237	* Determine how to default tape size and density
	238	*
	239	* density tape size
	240	* 9-track 1600 bpi (160 bytes/.1") 2300 ft.
	241	* 9-track 6250 bpi (625 bytes/.1") 2300 ft.
	242	* cartridge 8000 bpi (100 bytes/.1") 1700 ft.
	243	* (450*4 - slop)
	244	*/
	245	if (density == 0)
	246	density = cartridge ? 100 : 160;
	247	if (tsize == 0)
	248	tsize = cartridge ? 1700L120L : 2300L120L;
	249	}
1ddebffe	250
ae744076 KM	251	if (index(tape, ':')) {
	252	host = tape;
	253	tape = index(host, ':');
	254	*tape++ = 0;
c29a1d14	255	#ifdef RDUMP
ae744076	256	if (rmthost(host) == 0)
0289322c	257	exit(X_ABORT);
ae744076	258	#else
25c5efb9	259	(void) fprintf(stderr, "remote dump not enabled\n");
0289322c	260	exit(X_ABORT);
ae744076	261	#endif
c29a1d14	262	}
25c5efb9	263	(void) setuid(getuid()); /* rmthost() is the only reason to be setuid */
ae744076	264
70c0f96a	265	if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
71b2d5ef	266	signal(SIGHUP, sig);
70c0f96a	267	if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
71b2d5ef	268	signal(SIGTRAP, sig);
70c0f96a	269	if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
71b2d5ef	270	signal(SIGFPE, sig);
70c0f96a	271	if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
71b2d5ef	272	signal(SIGBUS, sig);
70c0f96a	273	if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
71b2d5ef	274	signal(SIGSEGV, sig);
70c0f96a	275	if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
71b2d5ef	276	signal(SIGTERM, sig);
0393c389 BJ	277	if (signal(SIGINT, interrupt) == SIG_IGN)
	278	signal(SIGINT, SIG_IGN);
	279
	280	set_operators(); /* /etc/group snarfed */
	281	getfstab(); /* /etc/fstab snarfed */
	282	/*
	283	* disk can be either the full special file name,
	284	* the suffix of the special file name,
	285	* the special name missing the leading '/',
	286	* the file system name with or without the leading '/'.
	287	*/
	288	dt = fstabsearch(disk);
b28b78d4	289	if (dt != 0) {
0393c389	290	disk = rawname(dt->fs_spec);
25c5efb9 KM	291	(void) strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
25c5efb9 KM	292	(void) strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
b28b78d4	293	} else {
25c5efb9 KM	294	(void) strncpy(spcl.c_dev, disk, NAMELEN);
	295	(void) strncpy(spcl.c_filesys, "an unlisted file system",
	296	NAMELEN);
b28b78d4	297	}
25c5efb9 KM	298	(void) strcpy(spcl.c_label, "none");
25c5efb9 KM	299	(void) gethostname(spcl.c_host, NAMELEN);
6175ef8c	300	spcl.c_level = level - '0';
b28b78d4	301	spcl.c_type = TS_TAPE;
25c5efb9 KM	302	if (!Tflag)
25c5efb9 KM	303	getdumptime(); /* /etc/dumpdates snarfed */
0393c389	304
6175ef8c KM	305	msg("Date of this level %c dump: %s", level,
	306	spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
	307	msg("Date of last level %c dump: %s", lastlevel,
	308	spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
0393c389 BJ	309	msg("Dumping %s ", disk);
	310	if (dt != 0)
	311	msgtail("(%s) ", dt->fs_file);
ae744076 KM	312	if (host)
	313	msgtail("to %s on host %s\n", tape, host);
	314	else
	315	msgtail("to %s\n", tape);
0393c389	316
6175ef8c	317	if ((diskfd = open(disk, O_RDONLY)) < 0) {
0393c389 BJ	318	msg("Cannot open %s\n", disk);
	319	Exit(X_ABORT);
	320	}
b6407c9d	321	sync();
25c5efb9 KM	322	sblock = (struct fs *)sblock_buf;
25c5efb9 KM	323	bread(SBOFF, (char *) sblock, SBSIZE);
5c3d7d9e CT	324	if (sblock->fs_magic != FS_MAGIC)
5c3d7d9e CT	325	quit("bad sblock magic number\n");
ff96014a	326	dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
5c3d7d9e CT	327	dev_bshift = ffs(dev_bsize) - 1;
	328	if (dev_bsize != (1 << dev_bshift))
	329	quit("dev_bsize (%d) is not a power of 2", dev_bsize);
	330	tp_bshift = ffs(TP_BSIZE) - 1;
	331	if (TP_BSIZE != (1 << tp_bshift))
	332	quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
0289322c	333	#ifdef FS_44INODEFMT
1fa5ceca KM	334	if (sblock->fs_inodefmt >= FS_44INODEFMT)
1fa5ceca KM	335	spcl.c_flags \|= DR_NEWINODEFMT;
0289322c	336	#endif
6175ef8c KM	337	maxino = sblock->fs_ipg * sblock->fs_ncg - 1;
6175ef8c KM	338	mapsize = roundup(howmany(sblock->fs_ipg * sblock->fs_ncg, NBBY),
b6407c9d	339	TP_BSIZE);
25c5efb9 KM	340	usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
	341	dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
	342	dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
6175ef8c	343	tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
0393c389 BJ	344
0393c389 BJ	345	msg("mapping (Pass I) [regular files]\n");
6175ef8c	346	anydirskipped = mapfiles(maxino, &tapesize);
0393c389	347
6175ef8c KM	348	msg("mapping (Pass II) [directories]\n");
	349	while (anydirskipped) {
	350	anydirskipped = mapdirs(maxino, &tapesize);
	351	}
0393c389	352
70c0f96a	353	if (pipeout)
6175ef8c	354	tapesize += 10; /* 10 trailer blocks */
70c0f96a KM	355	else {
70c0f96a KM	356	if (blocksperfile)
dd80a182	357	fetapes = (float) tapesize / blocksperfile;
70c0f96a KM	358	else if (cartridge) {
	359	/* Estimate number of tapes, assuming streaming stops at
	360	the end of each block written, and not in mid-block.
	361	Assume no erroneous blocks; this can be compensated
	362	for with an artificially low tape size. */
	363	fetapes =
6175ef8c	364	( tapesize /* blocks */
70c0f96a KM	365	* TP_BSIZE /* bytes/block */
	366	* (1.0/density) /* 0.1" / byte */
	367	+
6175ef8c	368	tapesize /* blocks */
70c0f96a KM	369	* (1.0/ntrec) /* streaming-stops per block */
	370	* 15.48 /* 0.1" / streaming-stop */
	371	) * (1.0 / tsize ); /* tape / 0.1" */
	372	} else {
	373	/* Estimate number of tapes, for old fashioned 9-track
	374	tape */
	375	int tenthsperirg = (density == 625) ? 3 : 7;
	376	fetapes =
6175ef8c	377	( tapesize /* blocks */
70c0f96a KM	378	* TP_BSIZE /* bytes / block */
	379	* (1.0/density) /* 0.1" / byte */
	380	+
6175ef8c	381	tapesize /* blocks */
70c0f96a KM	382	* (1.0/ntrec) /* IRG's / block */
	383	* tenthsperirg /* 0.1" / IRG */
	384	) * (1.0 / tsize ); /* tape / 0.1" */
	385	}
	386	etapes = fetapes; /* truncating assignment */
	387	etapes++;
6175ef8c KM	388	/* count the dumped inodes map on each additional tape */
	389	tapesize += (etapes - 1) *
	390	(howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
	391	tapesize += etapes + 10; /* headers + 10 trailer blks */
1ddebffe	392	}
70c0f96a	393	if (pipeout)
6175ef8c	394	msg("estimated %ld tape blocks.\n", tapesize);
70c0f96a KM	395	else
70c0f96a KM	396	msg("estimated %ld tape blocks on %3.2f tape(s).\n",
6175ef8c	397	tapesize, fetapes);
0393c389	398
25c5efb9 KM	399	/*
	400	* Allocate tape buffer
	401	*/
	402	if (!alloctape())
	403	quit("can't allocate tape buffers - try a smaller blocking factor.\n");
1ddebffe	404
ae744076	405	startnewtape(1);
25c5efb9	406	(void) time((time_t *)&(tstart_writing));
6175ef8c	407	dumpmap(usedinomap, TS_CLRI, maxino);
0393c389 BJ	408
0393c389 BJ	409	msg("dumping (Pass III) [directories]\n");
6175ef8c KM	410	for (map = dumpdirmap, ino = 0; ino < maxino; ) {
6175ef8c KM	411	if ((ino % NBBY) == 0)
0a008f8c	412	dirty = *map++;
6175ef8c	413	else
0a008f8c	414	dirty >>= 1;
6175ef8c	415	ino++;
0a008f8c	416	if ((dirty & 1) == 0)
6175ef8c KM	417	continue;
	418	/*
	419	* Skip directory inodes deleted and maybe reallocated
	420	*/
	421	dp = getino(ino);
	422	if ((dp->di_mode & IFMT) != IFDIR)
	423	continue;
25c5efb9	424	(void) dumpino(dp, ino);
6175ef8c	425	}
0393c389 BJ	426
0393c389 BJ	427	msg("dumping (Pass IV) [regular files]\n");
6175ef8c	428	for (map = dumpinomap, ino = 0; ino < maxino; ) {
0289322c KM	429	int mode;
0289322c KM	430
6175ef8c	431	if ((ino % NBBY) == 0)
0a008f8c	432	dirty = *map++;
6175ef8c	433	else
0a008f8c	434	dirty >>= 1;
6175ef8c	435	ino++;
0a008f8c	436	if ((dirty & 1) == 0)
6175ef8c KM	437	continue;
	438	/*
	439	* Skip inodes deleted and reallocated as directories.
	440	*/
	441	dp = getino(ino);
0289322c KM	442	mode = dp->di_mode & IFMT;
0289322c KM	443	if (mode == IFDIR)
6175ef8c	444	continue;
25c5efb9	445	(void) dumpino(dp, ino);
6175ef8c	446	}
0393c389 BJ	447
0393c389 BJ	448	spcl.c_type = TS_END;
6175ef8c KM	449	for (i = 0; i < ntrec; i++)
6175ef8c KM	450	writeheader(maxino);
70c0f96a KM	451	if (pipeout)
	452	msg("DUMP: %ld tape blocks\n",spcl.c_tapea);
	453	else
	454	msg("DUMP: %ld tape blocks on %d volumes(s)\n",
	455	spcl.c_tapea, spcl.c_volume);
6175ef8c	456	putdumptime();
1db7a225	457	trewind();
0393c389	458	broadcast("DUMP IS DONE!\7\7\n");
ae744076	459	msg("DUMP IS DONE\n");
0393c389	460	Exit(X_FINOK);
5c3d7d9e	461	/* NOTREACHED */
0393c389 BJ	462	}
0393c389 BJ	463
5c3d7d9e	464	void
71b2d5ef KB	465	sig(signo)
71b2d5ef KB	466	int signo;
0393c389	467	{
71b2d5ef KB	468	switch(signo) {
	469	case SIGALRM:
	470	case SIGBUS:
	471	case SIGFPE:
	472	case SIGHUP:
	473	case SIGTERM:
	474	case SIGTRAP:
	475	if (pipeout)
	476	quit("Signal on pipe: cannot recover\n");
	477	msg("Rewriting attempted as response to unknown signal.\n");
	478	(void) fflush(stderr);
	479	(void) fflush(stdout);
	480	close_rewind();
0289322c	481	exit(X_REWRITE);
71b2d5ef KB	482	/* NOTREACHED */
	483	case SIGSEGV:
	484	msg("SIGSEGV: ABORTING!\n");
	485	(void) signal(SIGSEGV, SIG_DFL);
	486	(void) kill(0, SIGSEGV);
	487	/* NOTREACHED */
	488	}
0393c389 BJ	489	}
0393c389 BJ	490
5c3d7d9e CT	491	char *
5c3d7d9e CT	492	rawname(cp)
0393c389 BJ	493	char *cp;
	494	{
	495	static char rawbuf[32];
	496	char *dp = rindex(cp, '/');
	497
	498	if (dp == 0)
	499	return (0);
	500	*dp = 0;
25c5efb9	501	(void) strcpy(rawbuf, cp);
0393c389	502	*dp = '/';
25c5efb9 KM	503	(void) strcat(rawbuf, "/r");
25c5efb9 KM	504	(void) strcat(rawbuf, dp+1);
0393c389 BJ	505	return (rawbuf);
0393c389 BJ	506	}
cdce5e6c KM	507
	508	#ifdef sunos
	509	char *
	510	strerror(errnum)
	511	int errnum;
	512	{
	513	extern int sys_nerr;
	514	extern char *sys_errlist[];
	515
	516	if (errnum < sys_nerr) {
	517	return(sys_errlist[errnum]);
	518	} else {
	519	return("bogus errno in strerror");
	520	}
	521	}
	522	#endif