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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/dump/main.c	Lines:	39	381	10.2 %
Date:	2017-11-07	Branches:	13	243	5.3 %


/*	$OpenBSD: main.c,v 1.59 2016/08/31 21:00:31 deraadt Exp $	*/
/*	$NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $	*/

/*-
 * Copyright (c) 1980, 1991, 1993, 1994
 *	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.
 */

#include <sys/param.h>	/* MAXBSIZE DEV_BSIZE roundup */
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/dkio.h>
#include <ufs/ffs/fs.h>
#include <ufs/ufs/dinode.h>

#include <protocols/dumprestore.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fstab.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <limits.h>
#include <util.h>

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

int	notify = 0;	/* notify operator flag */
int64_t	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 */
int64_t	blocksperfile;	/* output blocks per file */
char	*host = NULL;	/* remote host (if any) */
int	maxbsize = 64*1024;	/* XXX MAXBSIZE from sys/param.h */

struct disklabel lab;

/*
 * Possible superblock locations ordered from most to least likely.
 */
static int sblock_try[] = SBLOCKSEARCH;

static long long numarg(char *, long long, long long);
static void obsolete(int *, char **[]);
static void usage(void);

int
main(int argc, char *argv[])
{
	ino_t ino;
	int dirty;
	union dinode *dp;
	struct	fstab *dt;
	char *map;
	int ch, mode;
	struct tm then;
	struct statfs fsbuf;
	int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
	ino_t maxino;
	time_t t;
	int dirlist;
	char *toplevel, *str, *mount_point = NULL, *realpath;
	int just_estimate = 0;
	u_int64_t zero_uid = 0;

	spcl.c_date = (int64_t)time(NULL);

	tsize = 0;	/* Default later, based on 'c' option for cart tapes */
	if ((tape = getenv("TAPE")) == NULL)
		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';

	if (argc < 2)
		usage();

	obsolete(&argc, &argv);
	while ((ch = getopt(argc, argv, "0123456789aB:b:cd:f:h:ns:ST:uWw")) != -1)
		switch (ch) {
		/* dump level */
		case '0': case '1': case '2': case '3': case '4':
		case '5': case '6': case '7': case '8': case '9':
			level = ch;
			break;

		case 'B':		/* blocks per output file */
			blocksperfile = numarg("blocks per file", 1, 0);
			break;

		case 'b':		/* blocks per tape write */
			ntrec = numarg("blocks per write", 1, 1000);
			if (ntrec > maxbsize/1024) {
				msg("Please choose a blocksize <= %dKB\n",
				    maxbsize/1024);
				exit(X_STARTUP);
			}
			bflag = 1;
			break;

		case 'c':		/* Tape is cart. not 9-track */
			cartridge = 1;
			break;

		case 'd':		/* density, in bits per inch */
			density = numarg("density", 10, 327670) / 10;
			if (density >= 625 && !bflag)
				ntrec = HIGHDENSITYTREC;
			break;

		case 'f':		/* output file */
			tape = optarg;
			break;

		case 'h':
			honorlevel = numarg("honor level", 0, 10);
			break;

		case 'n':		/* notify operators */
			notify = 1;
			break;

		case 's':		/* tape size, feet */
			tsize = numarg("tape size", 1, 0) * 12 * 10;
			break;

		case 'S':		/* estimate blocks and # of tapes */
			just_estimate = 1;
			break;

		case 'T':		/* time of last dump */
			str = strptime(optarg, "%a %b %e %H:%M:%S %Y", &then);
			then.tm_isdst = -1;
			if (str == NULL || (*str != '\n' && *str != '\0'))
				spcl.c_ddate = -1;
			else
				spcl.c_ddate = (int64_t)mktime(&then);
			if (spcl.c_ddate < 0) {
				(void)fprintf(stderr, "bad time \"%s\"\n",
				    optarg);
				exit(X_STARTUP);
			}
			Tflag = 1;
			lastlevel = '?';
			break;

		case 'u':		/* update /etc/dumpdates */
			uflag = 1;
			break;

		case 'W':		/* what to do */
		case 'w':
			lastdump(ch);
			exit(X_FINOK);	/* do nothing else */
			break;

		case 'a':		/* `auto-size', Write to EOM. */
			unlimited = 1;
			break;

		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		(void)fprintf(stderr, "Must specify disk or filesystem\n");
		exit(X_STARTUP);
	}

	/*
	 *	determine if disk is a subdirectory, and setup appropriately
	 */
	dirlist = 0;
	toplevel = NULL;
	for (i = 0; i < argc; i++) {
		struct stat sb;

		/* Convert potential duid into a device name */
		if ((diskfd = opendev(argv[i], O_RDONLY | O_NOFOLLOW, 0,
		    &realpath)) >= 0) {
			argv[i] = strdup(realpath);
			if (argv[i] == NULL) {
				msg("Cannot malloc realpath\n");
				exit(X_STARTUP);
			}
			(void)close(diskfd);
		}
		if (lstat(argv[i], &sb) == -1) {
			msg("Cannot lstat %s: %s\n", argv[i], strerror(errno));
			exit(X_STARTUP);
		}
		if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode))
			break;
		if (statfs(argv[i], &fsbuf) == -1) {
			msg("Cannot statfs %s: %s\n", argv[i], strerror(errno));
			exit(X_STARTUP);
		}
		if (strcmp(argv[i], fsbuf.f_mntonname) == 0) {
			if (dirlist != 0) {
				msg("Can't dump a mountpoint and a filelist\n");
				exit(X_STARTUP);
			}
			break;		/* exit if sole mountpoint */
		}
		if (!disk) {
			if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) {
				msg("Cannot malloc diskname\n");
				exit(X_STARTUP);
			}
			disk = toplevel;
			if (uflag) {
				msg("Ignoring u flag for subdir dump\n");
				uflag = 0;
			}
			if (level > '0') {
				msg("Subdir dump is done at level 0\n");
				level = '0';
			}
			msg("Dumping sub files/directories from %s\n", disk);
		} else {
			if (strcmp(disk, fsbuf.f_mntonname) != 0) {
				msg("%s is not on %s\n", argv[i], disk);
				exit(X_STARTUP);
			}
		}
		msg("Dumping file/directory %s\n", argv[i]);
		dirlist++;
	}
	if (dirlist == 0) {
		disk = *argv++;
		if (argc != 1) {
			(void)fputs("Excess arguments to dump:", stderr);
			while (--argc) {
				(void)putc(' ', stderr);
				(void)fputs(*argv++, stderr);
			}
			(void)putc('\n', stderr);
			exit(X_STARTUP);
		}
	}
	if (Tflag && uflag) {
	        (void)fprintf(stderr,
		    "You cannot use the T and u flags together.\n");
		exit(X_STARTUP);
	}
	if (strcmp(tape, "-") == 0) {
		pipeout++;
		tape = "standard output";
	}

	if (blocksperfile)
		blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
	else if (!unlimited) {
		/*
		 * 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 (800 bytes/.1")	1700 ft.
		 *						(450*4 - slop)
		 */
		if (density == 0)
			density = cartridge ? 100 : 160;
		if (tsize == 0)
			tsize = cartridge ? 1700L*120L : 2300L*120L;
	}

	if (strchr(tape, ':')) {
		host = tape;
		tape = strchr(host, ':');
		*tape++ = '\0';
#ifdef RDUMP
		if (rmthost(host) == 0)
			exit(X_STARTUP);
#else
		(void)fprintf(stderr, "remote dump not enabled\n");
		exit(X_STARTUP);
#endif
	}

	if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
		signal(SIGHUP, sig);
	if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
		signal(SIGTERM, sig);
	if (signal(SIGINT, interrupt) == SIG_IGN)
		signal(SIGINT, SIG_IGN);

	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 '/'.
	 */
	if (!statfs(disk, &fsbuf) && !strcmp(fsbuf.f_mntonname, disk)) {
		/* mounted disk? */
		disk = rawname(fsbuf.f_mntfromname);
		if (!disk) {
			(void)fprintf(stderr, "cannot get raw name for %s\n",
			    fsbuf.f_mntfromname);
			exit(X_STARTUP);
		}
		mount_point = fsbuf.f_mntonname;
		(void)strlcpy(spcl.c_dev, fsbuf.f_mntfromname,
		    sizeof(spcl.c_dev));
		if (dirlist != 0) {
			(void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys),
			    "a subset of %s", mount_point);
		} else {
			(void)strlcpy(spcl.c_filesys, mount_point,
			    sizeof(spcl.c_filesys));
		}
	} else if ((dt = fstabsearch(disk)) != NULL) {
		/* in fstab? */
		if (strchr(dt->fs_spec, '/')) {
			/* fs_spec is a /dev/something */
			disk = rawname(dt->fs_spec);
		} else {
			/* fs_spec is a DUID */
			disk = rawname(disk);
		}
		mount_point = dt->fs_file;
		(void)strlcpy(spcl.c_dev, dt->fs_spec, sizeof(spcl.c_dev));
		if (dirlist != 0) {
			(void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys),
			    "a subset of %s", mount_point);
		} else {
			(void)strlcpy(spcl.c_filesys, mount_point,
			    sizeof(spcl.c_filesys));
		}
	} else {
		/* must be a device */
		(void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev));
		(void)strlcpy(spcl.c_filesys, "an unlisted file system",
		    sizeof(spcl.c_filesys));
	}
	(void)strlcpy(spcl.c_label, "none", sizeof(spcl.c_label));
	(void)gethostname(spcl.c_host, sizeof(spcl.c_host));
	spcl.c_level = level - '0';
	spcl.c_type = TS_TAPE;

	if ((diskfd = open(disk, O_RDONLY)) < 0) {
		msg("Cannot open %s\n", disk);
		exit(X_STARTUP);
	}
	if (ioctl(diskfd, DIOCGDINFO, (char *)&lab) < 0)
		err(1, "ioctl (DIOCGDINFO)");

	if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) {
		if (asprintf(&duid,
		    "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c",
		    lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3],
		    lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7],
		    disk[strlen(disk)-1]) == -1) {
			msg("Cannot malloc duid\n");
			exit(X_STARTUP);
		}
	}
	if (!Tflag)
	        getdumptime();		/* /etc/dumpdates snarfed */

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

	if (ioctl(diskfd, DIOCGPDINFO, (char *)&lab) < 0)
		err(1, "ioctl (DIOCGPDINFO)");
	sync();
	sblock = (struct fs *)sblock_buf;
	for (i = 0; sblock_try[i] != -1; i++) {
		ssize_t n = pread(diskfd, sblock, SBLOCKSIZE,
		    (off_t)sblock_try[i]);
		if (n == SBLOCKSIZE && (sblock->fs_magic == FS_UFS1_MAGIC ||
		     (sblock->fs_magic == FS_UFS2_MAGIC &&
		      sblock->fs_sblockloc == sblock_try[i])) &&
		    sblock->fs_bsize <= MAXBSIZE &&
		    sblock->fs_bsize >= sizeof(struct fs))
			break;
	}
	if (sblock_try[i] == -1)
		quit("Cannot find filesystem superblock\n");
	tp_bshift = ffs(TP_BSIZE) - 1;
	if (TP_BSIZE != (1 << tp_bshift))
		quit("TP_BSIZE (%d) is not a power of 2\n", TP_BSIZE);
#ifdef FS_44INODEFMT
	if (sblock->fs_magic == FS_UFS2_MAGIC ||
	    sblock->fs_inodefmt >= FS_44INODEFMT)
		spcl.c_flags |= DR_NEWINODEFMT;
#endif
	maxino = sblock->fs_ipg * sblock->fs_ncg;
	mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
	usedinomap = calloc((unsigned) mapsize, sizeof(char));
	dumpdirmap = calloc((unsigned) mapsize, sizeof(char));
	dumpinomap = calloc((unsigned) mapsize, sizeof(char));
	tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);

	nonodump = spcl.c_level < honorlevel;

	(void)signal(SIGINFO, statussig);

	msg("mapping (Pass I) [regular files]\n");
	anydirskipped = mapfiles(maxino, &tapesize, toplevel,
	    (dirlist ? argv : NULL));

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

	if (pipeout || unlimited) {
		tapesize += 10;	/* 10 trailer blocks */
		msg("estimated %lld tape blocks.\n", tapesize);
	} else {
		double fetapes;

		if (blocksperfile)
			fetapes = (double) 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 */
		msg("estimated %lld tape blocks on %3.2f tape(s).\n",
		    tapesize, fetapes);
	}

	/*
	 * Exit if user wants an estimate of blocks and # of tapes only.
	 */
	if (just_estimate)
		exit(X_FINOK);

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

	startnewtape(1);
	(void)time(&tstart_writing);
	xferrate = 0;
	dumpmap(usedinomap, TS_CLRI, maxino - 1);

	msg("dumping (Pass III) [directories]\n");
	dirty = 0;		/* XXX just to get gcc to shut up */
	for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
		if (((ino - 1) % NBBY) == 0)	/* map is offset by 1 */
			dirty = *map++;
		else
			dirty >>= 1;
		if ((dirty & 1) == 0)
			continue;
		/*
		 * Skip directory inodes deleted and maybe reallocated
		 */
		dp = getino(ino, &mode);
		if (mode != IFDIR)
			continue;
		(void)dumpino(dp, ino);
	}

	msg("dumping (Pass IV) [regular files]\n");
	for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
		if (((ino - 1) % NBBY) == 0)	/* map is offset by 1 */
			dirty = *map++;
		else
			dirty >>= 1;
		if ((dirty & 1) == 0)
			continue;
		/*
		 * Skip inodes deleted and reallocated as directories.
		 */
		dp = getino(ino, &mode);
		if (mode == IFDIR)
			continue;
		(void)dumpino(dp, ino);
	}

	spcl.c_type = TS_END;
	for (i = 0; i < ntrec; i++)
		writeheader(maxino - 1);
	if (pipeout)
		msg("%lld tape blocks\n", spcl.c_tapea);
	else
		msg("%lld tape blocks on %d volume%s\n",
		    spcl.c_tapea, spcl.c_volume,
		    (spcl.c_volume == 1) ? "" : "s");
	t = (time_t)spcl.c_date;
	msg("Date of this level %c dump: %s", level,
	    t == 0 ? "the epoch\n" : ctime(&t));
	t = do_stats();
	msg("Date this dump completed:  %s", ctime(&t));
	msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
	putdumptime();
	trewind();
	broadcast("DUMP IS DONE!\7\7\n");
	msg("DUMP IS DONE\n");
	Exit(X_FINOK);
	/* NOTREACHED */
}

static void
usage(void)
{
	extern char *__progname;

	(void)fprintf(stderr, "usage: %s [-0123456789acnSuWw] [-B records] "
		      "[-b blocksize] [-d density]\n"
		      "\t[-f file] [-h level] [-s feet] "
		      "[-T date] files-to-dump\n",
		      __progname);
	exit(X_STARTUP);
}

/*
 * Pick up a numeric argument.  It must be nonnegative and in the given
 * range (except that a vmax of 0 means unlimited).
 */
static long long
numarg(char *meaning, long long vmin, long long vmax)
{
	long long val;
	const char *errstr;

	if (vmax == 0)
		vmax = LLONG_MAX;
	val = strtonum(optarg, vmin, vmax, &errstr);
	if (errstr)
		errx(X_STARTUP, "%s is %s [%lld - %lld]",
		    meaning, errstr, vmin, vmax);

	return (val);
}

void
sig(int signo)
{
	switch(signo) {
	case SIGALRM:
	case SIGHUP:
	case SIGTERM:
		/* XXX signal race */
		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 */
	}
}

char *
rawname(char *cp)
{
	static char rawbuf[PATH_MAX];
	char *dp = strrchr(cp, '/');
	char *prefix;

	if (dp == NULL)
		return (NULL);
	prefix = dp[1] == 'r' ? "" : "r";
	*dp = '\0';
	(void)snprintf(rawbuf, sizeof(rawbuf), "%s/%s%s", cp, prefix, dp + 1);
	*dp = '/';
	return (rawbuf);
}

char *
getduid(char *path)
{
	int fd;
	struct disklabel lab;
	u_int64_t zero_uid = 0;
	char *duid;

	if ((fd = opendev(path, O_RDONLY | O_NOFOLLOW, 0, NULL)) >= 0) {
		if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
			close(fd);
			warn("ioctl(DIOCGDINFO)");
			return (NULL);
		}
		close(fd);

		if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) {
			if (asprintf(&duid,
			    "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c",
			    lab.d_uid[0], lab.d_uid[1], lab.d_uid[2],
			    lab.d_uid[3], lab.d_uid[4], lab.d_uid[5],
			    lab.d_uid[6], lab.d_uid[7],
			    path[strlen(path)-1]) == -1) {
				warn("Cannot malloc duid");
				return (NULL);
			}
			return (duid);
		}
	}

	return (NULL);
}

/*
 * obsolete --
 *	Change set of key letters and ordered arguments into something
 *	getopt(3) will like.
 */
static void
obsolete(int *argcp, char **argvp[])
{
	int argc, flags;
	char *ap, **argv, *flagsp, **nargv, *p;
	size_t len;

	/* Setup. */
	argv = *argvp;
	argc = *argcp;

	/* Return if no arguments or first argument has leading dash. */
	ap = argv[1];
	if (argc == 1 || *ap == '-')
		return;

	/* Allocate space for new arguments. */
	if ((*argvp = nargv = calloc(argc + 1, sizeof(char *))) == NULL ||
	    (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
		err(1, NULL);

	*nargv++ = *argv;
	argv += 2;

	for (flags = 0; *ap; ++ap) {
		switch (*ap) {
		case 'B':
		case 'b':
		case 'd':
		case 'f':
		case 'h':
		case 's':
		case 'T':
			if (*argv == NULL) {
				warnx("option requires an argument -- %c", *ap);
				usage();
			}
			len = 2 + strlen(*argv) + 1;
			if ((nargv[0] = malloc(len)) == NULL)
				err(1, NULL);
			nargv[0][0] = '-';
			nargv[0][1] = *ap;
			(void)strlcpy(&nargv[0][2], *argv, len - 2);
			++argv;
			++nargv;
			break;
		default:
			if (!flags) {
				*p++ = '-';
				flags = 1;
			}
			*p++ = *ap;
			break;
		}
	}

	/* Terminate flags, or toss the buffer we did not use. */
	if (flags) {
		*p = '\0';
		*nargv++ = flagsp;
	} else
		free(flagsp);

	/* Copy remaining arguments. */
	while ((*nargv++ = *argv++))
		continue;

	/* Update argument count. */
	*argcp = nargv - *argvp - 1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: main.c,v 1.59 2016/08/31 21:00:31 deraadt Exp $ */
2			/* $NetBSD: main.c,v 1.14 1997/06/05 11:13:24 lukem Exp $ */
3
4			/*-
5			* Copyright (c) 1980, 1991, 1993, 1994
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/param.h> /* MAXBSIZE DEV_BSIZE roundup */
34			#include <sys/mount.h>
35			#include <sys/stat.h>
36			#include <sys/time.h>
37			#include <sys/ioctl.h>
38			#include <sys/disklabel.h>
39			#include <sys/dkio.h>
40			#include <ufs/ffs/fs.h>
41			#include <ufs/ufs/dinode.h>
42
43			#include <protocols/dumprestore.h>
44
45			#include <ctype.h>
46			#include <err.h>
47			#include <errno.h>
48			#include <fcntl.h>
49			#include <fstab.h>
50			#include <paths.h>
51			#include <signal.h>
52			#include <stdio.h>
53			#include <stdlib.h>
54			#include <string.h>
55			#include <time.h>
56			#include <unistd.h>
57			#include <limits.h>
58			#include <util.h>
59
60			#include "dump.h"
61			#include "pathnames.h"
62
63			int notify = 0; /* notify operator flag */
64			int64_t blockswritten = 0; /* number of blocks written on current tape */
65			int tapeno = 0; /* current tape number */
66			int density = 0; /* density in bytes/0.1" */
67			int ntrec = NTREC; /* # tape blocks in each tape record */
68			int cartridge = 0; /* Assume non-cartridge tape */
69			int64_t blocksperfile; /* output blocks per file */
70			char host = NULL; / remote host (if any) */
71			int maxbsize = 641024; / XXX MAXBSIZE from sys/param.h */
72
73			struct disklabel lab;
74
75			/*
76			* Possible superblock locations ordered from most to least likely.
77			*/
78			static int sblock_try[] = SBLOCKSEARCH;
79
80			static long long numarg(char *, long long, long long);
81			static void obsolete(int , char *[]);
82			static void usage(void);
83
84			int
85			main(int argc, char *argv[])
86			{
87			ino_t ino;
88			int dirty;
89			union dinode *dp;
90			struct fstab *dt;
91			char *map;
92		1	int ch, mode;
93		1	struct tm then;
94		1	struct statfs fsbuf;
95			int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
96			ino_t maxino;
97		1	time_t t;
98			int dirlist;
99		1	char toplevel, str, mount_point = NULL, realpath;
100			int just_estimate = 0;
101		1	u_int64_t zero_uid = 0;
102
103		1	spcl.c_date = (int64_t)time(NULL);
104
105		1	tsize = 0; /* Default later, based on 'c' option for cart tapes */
106		1	if ((tape = getenv("TAPE")) == NULL)
107		1	tape = _PATH_DEFTAPE;
108		1	dumpdates = _PATH_DUMPDATES;
109		1	temp = _PATH_DTMP;
110			if (TP_BSIZE / DEV_BSIZE == 0 \|\| TP_BSIZE % DEV_BSIZE != 0)
111			quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
112		1	level = '0';
113
114	✗✓	1	if (argc < 2)
115			usage();
116
117		1	obsolete(&argc, &argv);
118	✓✗	2	while ((ch = getopt(argc, argv, "0123456789aB:b:cd:f:h:ns:ST:uWw")) != -1)
119	✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✓✗ ✗	1	switch (ch) {
120			/* dump level */
121			case '0': case '1': case '2': case '3': case '4':
122			case '5': case '6': case '7': case '8': case '9':
123			level = ch;
124			break;
125
126			case 'B': /* blocks per output file */
127			blocksperfile = numarg("blocks per file", 1, 0);
128			break;
129
130			case 'b': /* blocks per tape write */
131			ntrec = numarg("blocks per write", 1, 1000);
132			if (ntrec > maxbsize/1024) {
133			msg("Please choose a blocksize <= %dKB\n",
134			maxbsize/1024);
135			exit(X_STARTUP);
136			}
137			bflag = 1;
138			break;
139
140			case 'c': /* Tape is cart. not 9-track */
141			cartridge = 1;
142			break;
143
144			case 'd': /* density, in bits per inch */
145			density = numarg("density", 10, 327670) / 10;
146			if (density >= 625 && !bflag)
147			ntrec = HIGHDENSITYTREC;
148			break;
149
150			case 'f': /* output file */
151			tape = optarg;
152			break;
153
154			case 'h':
155			honorlevel = numarg("honor level", 0, 10);
156			break;
157
158			case 'n': /* notify operators */
159			notify = 1;
160			break;
161
162			case 's': /* tape size, feet */
163			tsize = numarg("tape size", 1, 0) * 12 * 10;
164			break;
165
166			case 'S': /* estimate blocks and # of tapes */
167			just_estimate = 1;
168			break;
169
170			case 'T': /* time of last dump */
171			str = strptime(optarg, "%a %b %e %H:%M:%S %Y", &then);
172			then.tm_isdst = -1;
173			if (str == NULL \|\| (str != '\n' && str != '\0'))
174			spcl.c_ddate = -1;
175			else
176			spcl.c_ddate = (int64_t)mktime(&then);
177			if (spcl.c_ddate < 0) {
178			(void)fprintf(stderr, "bad time \"%s\"\n",
179			optarg);
180			exit(X_STARTUP);
181			}
182			Tflag = 1;
183			lastlevel = '?';
184			break;
185
186			case 'u': /* update /etc/dumpdates */
187			uflag = 1;
188			break;
189
190			case 'W': /* what to do */
191			case 'w':
192			lastdump(ch);
193			exit(X_FINOK); /* do nothing else */
194			break;
195
196			case 'a': /* `auto-size', Write to EOM. */
197			unlimited = 1;
198			break;
199
200			default:
201			usage();
202			}
203			argc -= optind;
204			argv += optind;
205
206			if (argc < 1) {
207			(void)fprintf(stderr, "Must specify disk or filesystem\n");
208			exit(X_STARTUP);
209			}
210
211			/*
212			* determine if disk is a subdirectory, and setup appropriately
213			*/
214			dirlist = 0;
215			toplevel = NULL;
216			for (i = 0; i < argc; i++) {
217			struct stat sb;
218
219			/* Convert potential duid into a device name */
220			if ((diskfd = opendev(argv[i], O_RDONLY \| O_NOFOLLOW, 0,
221			&realpath)) >= 0) {
222			argv[i] = strdup(realpath);
223			if (argv[i] == NULL) {
224			msg("Cannot malloc realpath\n");
225			exit(X_STARTUP);
226			}
227			(void)close(diskfd);
228			}
229			if (lstat(argv[i], &sb) == -1) {
230			msg("Cannot lstat %s: %s\n", argv[i], strerror(errno));
231			exit(X_STARTUP);
232			}
233			if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode))
234			break;
235			if (statfs(argv[i], &fsbuf) == -1) {
236			msg("Cannot statfs %s: %s\n", argv[i], strerror(errno));
237			exit(X_STARTUP);
238			}
239			if (strcmp(argv[i], fsbuf.f_mntonname) == 0) {
240			if (dirlist != 0) {
241			msg("Can't dump a mountpoint and a filelist\n");
242			exit(X_STARTUP);
243			}
244			break; /* exit if sole mountpoint */
245			}
246			if (!disk) {
247			if ((toplevel = strdup(fsbuf.f_mntonname)) == NULL) {
248			msg("Cannot malloc diskname\n");
249			exit(X_STARTUP);
250			}
251			disk = toplevel;
252			if (uflag) {
253			msg("Ignoring u flag for subdir dump\n");
254			uflag = 0;
255			}
256			if (level > '0') {
257			msg("Subdir dump is done at level 0\n");
258			level = '0';
259			}
260			msg("Dumping sub files/directories from %s\n", disk);
261			} else {
262			if (strcmp(disk, fsbuf.f_mntonname) != 0) {
263			msg("%s is not on %s\n", argv[i], disk);
264			exit(X_STARTUP);
265			}
266			}
267			msg("Dumping file/directory %s\n", argv[i]);
268			dirlist++;
269			}
270			if (dirlist == 0) {
271			disk = *argv++;
272			if (argc != 1) {
273			(void)fputs("Excess arguments to dump:", stderr);
274			while (--argc) {
275			(void)putc(' ', stderr);
276			(void)fputs(*argv++, stderr);
277			}
278			(void)putc('\n', stderr);
279			exit(X_STARTUP);
280			}
281			}
282			if (Tflag && uflag) {
283			(void)fprintf(stderr,
284			"You cannot use the T and u flags together.\n");
285			exit(X_STARTUP);
286			}
287			if (strcmp(tape, "-") == 0) {
288			pipeout++;
289			tape = "standard output";
290			}
291
292			if (blocksperfile)
293			blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
294			else if (!unlimited) {
295			/*
296			* Determine how to default tape size and density
297			*
298			* density tape size
299			* 9-track 1600 bpi (160 bytes/.1") 2300 ft.
300			* 9-track 6250 bpi (625 bytes/.1") 2300 ft.
301			* cartridge 8000 bpi (800 bytes/.1") 1700 ft.
302			* (450*4 - slop)
303			*/
304			if (density == 0)
305			density = cartridge ? 100 : 160;
306			if (tsize == 0)
307			tsize = cartridge ? 1700L120L : 2300L120L;
308			}
309
310			if (strchr(tape, ':')) {
311			host = tape;
312			tape = strchr(host, ':');
313			*tape++ = '\0';
314			#ifdef RDUMP
315			if (rmthost(host) == 0)
316			exit(X_STARTUP);
317			#else
318			(void)fprintf(stderr, "remote dump not enabled\n");
319			exit(X_STARTUP);
320			#endif
321			}
322
323			if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
324			signal(SIGHUP, sig);
325			if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
326			signal(SIGTERM, sig);
327			if (signal(SIGINT, interrupt) == SIG_IGN)
328			signal(SIGINT, SIG_IGN);
329
330			getfstab(); /* /etc/fstab snarfed */
331
332			/*
333			* disk can be either the full special file name,
334			* the suffix of the special file name,
335			* the special name missing the leading '/',
336			* the file system name with or without the leading '/'.
337			*/
338			if (!statfs(disk, &fsbuf) && !strcmp(fsbuf.f_mntonname, disk)) {
339			/* mounted disk? */
340			disk = rawname(fsbuf.f_mntfromname);
341			if (!disk) {
342			(void)fprintf(stderr, "cannot get raw name for %s\n",
343			fsbuf.f_mntfromname);
344			exit(X_STARTUP);
345			}
346			mount_point = fsbuf.f_mntonname;
347			(void)strlcpy(spcl.c_dev, fsbuf.f_mntfromname,
348			sizeof(spcl.c_dev));
349			if (dirlist != 0) {
350			(void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys),
351			"a subset of %s", mount_point);
352			} else {
353			(void)strlcpy(spcl.c_filesys, mount_point,
354			sizeof(spcl.c_filesys));
355			}
356			} else if ((dt = fstabsearch(disk)) != NULL) {
357			/* in fstab? */
358			if (strchr(dt->fs_spec, '/')) {
359			/* fs_spec is a /dev/something */
360			disk = rawname(dt->fs_spec);
361			} else {
362			/* fs_spec is a DUID */
363			disk = rawname(disk);
364			}
365			mount_point = dt->fs_file;
366			(void)strlcpy(spcl.c_dev, dt->fs_spec, sizeof(spcl.c_dev));
367			if (dirlist != 0) {
368			(void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys),
369			"a subset of %s", mount_point);
370			} else {
371			(void)strlcpy(spcl.c_filesys, mount_point,
372			sizeof(spcl.c_filesys));
373			}
374			} else {
375			/* must be a device */
376			(void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev));
377			(void)strlcpy(spcl.c_filesys, "an unlisted file system",
378			sizeof(spcl.c_filesys));
379			}
380			(void)strlcpy(spcl.c_label, "none", sizeof(spcl.c_label));
381			(void)gethostname(spcl.c_host, sizeof(spcl.c_host));
382			spcl.c_level = level - '0';
383			spcl.c_type = TS_TAPE;
384
385			if ((diskfd = open(disk, O_RDONLY)) < 0) {
386			msg("Cannot open %s\n", disk);
387			exit(X_STARTUP);
388			}
389			if (ioctl(diskfd, DIOCGDINFO, (char *)&lab) < 0)
390			err(1, "ioctl (DIOCGDINFO)");
391
392			if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) {
393			if (asprintf(&duid,
394			"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c",
395			lab.d_uid[0], lab.d_uid[1], lab.d_uid[2], lab.d_uid[3],
396			lab.d_uid[4], lab.d_uid[5], lab.d_uid[6], lab.d_uid[7],
397			disk[strlen(disk)-1]) == -1) {
398			msg("Cannot malloc duid\n");
399			exit(X_STARTUP);
400			}
401			}
402			if (!Tflag)
403			getdumptime(); /* /etc/dumpdates snarfed */
404
405			t = (time_t)spcl.c_date;
406			msg("Date of this level %c dump: %s", level,
407			t == 0 ? "the epoch\n" : ctime(&t));
408			t = (time_t)spcl.c_ddate;
409			msg("Date of last level %c dump: %s", lastlevel,
410			t == 0 ? "the epoch\n" : ctime(&t));
411			msg("Dumping %s ", disk);
412			if (mount_point != NULL)
413			msgtail("(%s) ", mount_point);
414			if (host)
415			msgtail("to %s on host %s\n", tape, host);
416			else
417			msgtail("to %s\n", tape);
418
419			if (ioctl(diskfd, DIOCGPDINFO, (char *)&lab) < 0)
420			err(1, "ioctl (DIOCGPDINFO)");
421			sync();
422			sblock = (struct fs *)sblock_buf;
423			for (i = 0; sblock_try[i] != -1; i++) {
424			ssize_t n = pread(diskfd, sblock, SBLOCKSIZE,
425			(off_t)sblock_try[i]);
426			if (n == SBLOCKSIZE && (sblock->fs_magic == FS_UFS1_MAGIC \|\|
427			(sblock->fs_magic == FS_UFS2_MAGIC &&
428			sblock->fs_sblockloc == sblock_try[i])) &&
429			sblock->fs_bsize <= MAXBSIZE &&
430			sblock->fs_bsize >= sizeof(struct fs))
431			break;
432			}
433			if (sblock_try[i] == -1)
434			quit("Cannot find filesystem superblock\n");
435			tp_bshift = ffs(TP_BSIZE) - 1;
436			if (TP_BSIZE != (1 << tp_bshift))
437			quit("TP_BSIZE (%d) is not a power of 2\n", TP_BSIZE);
438			#ifdef FS_44INODEFMT
439			if (sblock->fs_magic == FS_UFS2_MAGIC \|\|
440			sblock->fs_inodefmt >= FS_44INODEFMT)
441			spcl.c_flags \|= DR_NEWINODEFMT;
442			#endif
443			maxino = sblock->fs_ipg * sblock->fs_ncg;
444			mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
445			usedinomap = calloc((unsigned) mapsize, sizeof(char));
446			dumpdirmap = calloc((unsigned) mapsize, sizeof(char));
447			dumpinomap = calloc((unsigned) mapsize, sizeof(char));
448			tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
449
450			nonodump = spcl.c_level < honorlevel;
451
452			(void)signal(SIGINFO, statussig);
453
454			msg("mapping (Pass I) [regular files]\n");
455			anydirskipped = mapfiles(maxino, &tapesize, toplevel,
456			(dirlist ? argv : NULL));
457
458			msg("mapping (Pass II) [directories]\n");
459			while (anydirskipped) {
460			anydirskipped = mapdirs(maxino, &tapesize);
461			}
462
463			if (pipeout \|\| unlimited) {
464			tapesize += 10; /* 10 trailer blocks */
465			msg("estimated %lld tape blocks.\n", tapesize);
466			} else {
467			double fetapes;
468
469			if (blocksperfile)
470			fetapes = (double) tapesize / blocksperfile;
471			else if (cartridge) {
472			/* Estimate number of tapes, assuming streaming stops at
473			the end of each block written, and not in mid-block.
474			Assume no erroneous blocks; this can be compensated
475			for with an artificially low tape size. */
476			fetapes =
477			( tapesize /* blocks */
478			* TP_BSIZE /* bytes/block */
479			* (1.0/density) /* 0.1" / byte */
480			+
481			tapesize /* blocks */
482			* (1.0/ntrec) /* streaming-stops per block */
483			* 15.48 /* 0.1" / streaming-stop */
484			) * (1.0 / tsize ); /* tape / 0.1" */
485			} else {
486			/* Estimate number of tapes, for old fashioned 9-track
487			tape */
488			int tenthsperirg = (density == 625) ? 3 : 7;
489			fetapes =
490			( tapesize /* blocks */
491			* TP_BSIZE /* bytes / block */
492			* (1.0/density) /* 0.1" / byte */
493			+
494			tapesize /* blocks */
495			* (1.0/ntrec) /* IRG's / block */
496			* tenthsperirg /* 0.1" / IRG */
497			) * (1.0 / tsize ); /* tape / 0.1" */
498			}
499			etapes = fetapes; /* truncating assignment */
500			etapes++;
501			/* count the dumped inodes map on each additional tape */
502			tapesize += (etapes - 1) *
503			(howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
504			tapesize += etapes + 10; /* headers + 10 trailer blks */
505			msg("estimated %lld tape blocks on %3.2f tape(s).\n",
506			tapesize, fetapes);
507			}
508
509			/*
510			* Exit if user wants an estimate of blocks and # of tapes only.
511			*/
512			if (just_estimate)
513			exit(X_FINOK);
514
515			/*
516			* Allocate tape buffer.
517			*/
518			if (!alloctape())
519			quit("can't allocate tape buffers - try a smaller blocking factor.\n");
520
521			startnewtape(1);
522			(void)time(&tstart_writing);
523			xferrate = 0;
524			dumpmap(usedinomap, TS_CLRI, maxino - 1);
525
526			msg("dumping (Pass III) [directories]\n");
527			dirty = 0; /* XXX just to get gcc to shut up */
528			for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
529			if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
530			dirty = *map++;
531			else
532			dirty >>= 1;
533			if ((dirty & 1) == 0)
534			continue;
535			/*
536			* Skip directory inodes deleted and maybe reallocated
537			*/
538			dp = getino(ino, &mode);
539			if (mode != IFDIR)
540			continue;
541			(void)dumpino(dp, ino);
542			}
543
544			msg("dumping (Pass IV) [regular files]\n");
545			for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
546			if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
547			dirty = *map++;
548			else
549			dirty >>= 1;
550			if ((dirty & 1) == 0)
551			continue;
552			/*
553			* Skip inodes deleted and reallocated as directories.
554			*/
555			dp = getino(ino, &mode);
556			if (mode == IFDIR)
557			continue;
558			(void)dumpino(dp, ino);
559			}
560
561			spcl.c_type = TS_END;
562			for (i = 0; i < ntrec; i++)
563			writeheader(maxino - 1);
564			if (pipeout)
565			msg("%lld tape blocks\n", spcl.c_tapea);
566			else
567			msg("%lld tape blocks on %d volume%s\n",
568			spcl.c_tapea, spcl.c_volume,
569			(spcl.c_volume == 1) ? "" : "s");
570			t = (time_t)spcl.c_date;
571			msg("Date of this level %c dump: %s", level,
572			t == 0 ? "the epoch\n" : ctime(&t));
573			t = do_stats();
574			msg("Date this dump completed: %s", ctime(&t));
575			msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
576			putdumptime();
577			trewind();
578			broadcast("DUMP IS DONE!\7\7\n");
579			msg("DUMP IS DONE\n");
580			Exit(X_FINOK);
581			/* NOTREACHED */
582			}
583
584			static void
585			usage(void)
586			{
587			extern char *__progname;
588
589			(void)fprintf(stderr, "usage: %s [-0123456789acnSuWw] [-B records] "
590			"[-b blocksize] [-d density]\n"
591			"\t[-f file] [-h level] [-s feet] "
592			"[-T date] files-to-dump\n",
593			__progname);
594			exit(X_STARTUP);
595			}
596
597			/*
598			* Pick up a numeric argument. It must be nonnegative and in the given
599			* range (except that a vmax of 0 means unlimited).
600			*/
601			static long long
602			numarg(char *meaning, long long vmin, long long vmax)
603			{
604			long long val;
605			const char *errstr;
606
607			if (vmax == 0)
608			vmax = LLONG_MAX;
609			val = strtonum(optarg, vmin, vmax, &errstr);
610			if (errstr)
611			errx(X_STARTUP, "%s is %s [%lld - %lld]",
612			meaning, errstr, vmin, vmax);
613
614			return (val);
615			}
616
617			void
618			sig(int signo)
619			{
620			switch(signo) {
621			case SIGALRM:
622			case SIGHUP:
623			case SIGTERM:
624			/* XXX signal race */
625			if (pipeout)
626			quit("Signal on pipe: cannot recover\n");
627			msg("Rewriting attempted as response to unknown signal.\n");
628			(void)fflush(stderr);
629			(void)fflush(stdout);
630			close_rewind();
631			exit(X_REWRITE);
632			/* NOTREACHED */
633			}
634			}
635
636			char *
637			rawname(char *cp)
638			{
639			static char rawbuf[PATH_MAX];
640			char *dp = strrchr(cp, '/');
641			char *prefix;
642
643			if (dp == NULL)
644			return (NULL);
645			prefix = dp[1] == 'r' ? "" : "r";
646			*dp = '\0';
647			(void)snprintf(rawbuf, sizeof(rawbuf), "%s/%s%s", cp, prefix, dp + 1);
648			*dp = '/';
649			return (rawbuf);
650			}
651
652			char *
653			getduid(char *path)
654			{
655			int fd;
656			struct disklabel lab;
657			u_int64_t zero_uid = 0;
658			char *duid;
659
660			if ((fd = opendev(path, O_RDONLY \| O_NOFOLLOW, 0, NULL)) >= 0) {
661			if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
662			close(fd);
663			warn("ioctl(DIOCGDINFO)");
664			return (NULL);
665			}
666			close(fd);
667
668			if (memcmp(lab.d_uid, &zero_uid, sizeof(lab.d_uid)) != 0) {
669			if (asprintf(&duid,
670			"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c",
671			lab.d_uid[0], lab.d_uid[1], lab.d_uid[2],
672			lab.d_uid[3], lab.d_uid[4], lab.d_uid[5],
673			lab.d_uid[6], lab.d_uid[7],
674			path[strlen(path)-1]) == -1) {
675			warn("Cannot malloc duid");
676			return (NULL);
677			}
678			return (duid);
679			}
680			}
681
682			return (NULL);
683			}
684
685			/*
686			* obsolete --
687			* Change set of key letters and ordered arguments into something
688			* getopt(3) will like.
689			*/
690			static void
691			obsolete(int argcp, char *argvp[])
692			{
693			int argc, flags;
694			char ap, argv, flagsp, *nargv, p;
695			size_t len;
696
697			/* Setup. */
698		2	argv = *argvp;
699		1	argc = *argcp;
700
701			/* Return if no arguments or first argument has leading dash. */
702		1	ap = argv[1];
703	✓✗✗✓	2	if (argc == 1 \|\| *ap == '-')
704			return;
705
706			/* Allocate space for new arguments. */
707	✓✗✗✓	2	if ((argvp = nargv = calloc(argc + 1, sizeof(char ))) == NULL \|\|
708		1	(p = flagsp = malloc(strlen(ap) + 2)) == NULL)
709			err(1, NULL);
710
711		1	nargv++ = argv;
712		1	argv += 2;
713
714	✓✓	4	for (flags = 0; *ap; ++ap) {
715	✗✗✗✗ ✗✗✗✓	1	switch (*ap) {
716			case 'B':
717			case 'b':
718			case 'd':
719			case 'f':
720			case 'h':
721			case 's':
722			case 'T':
723			if (*argv == NULL) {
724			warnx("option requires an argument -- %c", *ap);
725			usage();
726			}
727			len = 2 + strlen(*argv) + 1;
728			if ((nargv[0] = malloc(len)) == NULL)
729			err(1, NULL);
730			nargv[0][0] = '-';
731			nargv[0][1] = *ap;
732			(void)strlcpy(&nargv[0][2], *argv, len - 2);
733			++argv;
734			++nargv;
735			break;
736			default:
737	✓✗	1	if (!flags) {
738		1	*p++ = '-';
739			flags = 1;
740		1	}
741		1	p++ = ap;
742		1	break;
743			}
744			}
745
746			/* Terminate flags, or toss the buffer we did not use. */
747	✓✗	1	if (flags) {
748		1	*p = '\0';
749		1	*nargv++ = flagsp;
750		1	} else
751			free(flagsp);
752
753			/* Copy remaining arguments. */
754	✗✓	1	while ((nargv++ = argv++))
755			continue;
756
757			/* Update argument count. */
758		1	argcp = nargv - argvp - 1;
759		2	}