ada981b228
the old 8-bit fs_old_flags to the new location the first time that the filesystem is mounted by a new kernel. One of the unused flags in fs_old_flags is used to indicate that the flags have been moved. Leave the fs_old_flags word intact so that it will work properly if used on an old kernel. Change the fs_sblockloc superblock location field to be in units of bytes instead of in units of filesystem fragments. The old units did not work properly when the fragment size exceeeded the superblock size (8192). Update old fs_sblockloc values at the same time that the flags are moved. Suggested by: BOUWSMA Barry <freebsd-misuser@netscum.dyndns.dk> Sponsored by: DARPA & NAI Labs.
677 lines
17 KiB
C
677 lines
17 KiB
C
/*-
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* Copyright (c) 1980, 1991, 1993, 1994
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/disklabel.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <timeconv.h>
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#include <unistd.h>
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#include "dump.h"
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#include "pathnames.h"
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int notify = 0; /* notify operator flag */
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int blockswritten = 0; /* number of blocks written on current tape */
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int tapeno = 0; /* current tape number */
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int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
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int ntrec = NTREC; /* # tape blocks in each tape record */
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int cartridge = 0; /* Assume non-cartridge tape */
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int dokerberos = 0; /* Use Kerberos authentication */
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long dev_bsize = 1; /* recalculated below */
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long blocksperfile; /* output blocks per file */
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char *host = NULL; /* remote host (if any) */
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/*
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* Possible superblock locations ordered from most to least likely.
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*/
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static int sblock_try[] = SBLOCKSEARCH;
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static long numarg(const char *, long, long);
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static void obsolete(int *, char **[]);
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static void usage(void) __dead2;
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int
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main(int argc, char *argv[])
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{
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struct stat sb;
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ino_t ino;
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int dirty;
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union dinode *dp;
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struct fstab *dt;
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char *map;
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int ch, mode;
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int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
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int just_estimate = 0;
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ino_t maxino;
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char *tmsg;
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spcl.c_date = _time_to_time64(time(NULL));
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tsize = 0; /* Default later, based on 'c' option for cart tapes */
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if ((tape = getenv("TAPE")) == NULL)
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tape = _PATH_DEFTAPE;
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dumpdates = _PATH_DUMPDATES;
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temp = _PATH_DTMP;
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if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
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quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
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level = '0';
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if (argc < 2)
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usage();
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obsolete(&argc, &argv);
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#ifdef KERBEROS
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#define optstring "0123456789aB:b:cd:f:h:kns:ST:uWwD:"
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#else
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#define optstring "0123456789aB:b:cd:f:h:ns:ST:uWwD:"
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#endif
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while ((ch = getopt(argc, argv, optstring)) != -1)
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#undef optstring
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switch (ch) {
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/* dump level */
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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level = ch;
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break;
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case 'a': /* `auto-size', Write to EOM. */
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unlimited = 1;
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break;
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case 'B': /* blocks per output file */
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blocksperfile = numarg("number of blocks per file",
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1L, 0L);
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break;
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case 'b': /* blocks per tape write */
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ntrec = numarg("number of blocks per write",
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1L, 1000L);
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break;
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case 'c': /* Tape is cart. not 9-track */
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cartridge = 1;
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break;
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case 'd': /* density, in bits per inch */
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density = numarg("density", 10L, 327670L) / 10;
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if (density >= 625 && !bflag)
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ntrec = HIGHDENSITYTREC;
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break;
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case 'f': /* output file */
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tape = optarg;
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break;
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case 'D':
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dumpdates = optarg;
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break;
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case 'h':
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honorlevel = numarg("honor level", 0L, 10L);
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break;
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#ifdef KERBEROS
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case 'k':
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dokerberos = 1;
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break;
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#endif
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case 'n': /* notify operators */
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notify = 1;
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break;
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case 's': /* tape size, feet */
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tsize = numarg("tape size", 1L, 0L) * 12 * 10;
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break;
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case 'S': /* exit after estimating # of tapes */
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just_estimate = 1;
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break;
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case 'T': /* time of last dump */
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spcl.c_ddate = unctime(optarg);
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if (spcl.c_ddate < 0) {
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(void)fprintf(stderr, "bad time \"%s\"\n",
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optarg);
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exit(X_STARTUP);
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}
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Tflag = 1;
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lastlevel = '?';
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break;
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case 'u': /* update /etc/dumpdates */
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uflag = 1;
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break;
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case 'W': /* what to do */
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case 'w':
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lastdump(ch);
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exit(X_FINOK); /* do nothing else */
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 1) {
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(void)fprintf(stderr, "Must specify disk or file system\n");
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exit(X_STARTUP);
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}
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disk = *argv++;
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argc--;
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if (argc >= 1) {
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(void)fprintf(stderr, "Unknown arguments to dump:");
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while (argc--)
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(void)fprintf(stderr, " %s", *argv++);
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(void)fprintf(stderr, "\n");
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exit(X_STARTUP);
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}
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if (Tflag && uflag) {
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(void)fprintf(stderr,
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"You cannot use the T and u flags together.\n");
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exit(X_STARTUP);
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}
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if (strcmp(tape, "-") == 0) {
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pipeout++;
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tape = "standard output";
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}
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if (blocksperfile)
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blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
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else if (!unlimited) {
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/*
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* Determine how to default tape size and density
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*
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* density tape size
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* 9-track 1600 bpi (160 bytes/.1") 2300 ft.
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* 9-track 6250 bpi (625 bytes/.1") 2300 ft.
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* cartridge 8000 bpi (100 bytes/.1") 1700 ft.
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* (450*4 - slop)
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* hilit19 hits again: "
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*/
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if (density == 0)
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density = cartridge ? 100 : 160;
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if (tsize == 0)
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tsize = cartridge ? 1700L*120L : 2300L*120L;
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}
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if (strchr(tape, ':')) {
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host = tape;
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tape = strchr(host, ':');
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*tape++ = '\0';
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#ifdef RDUMP
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if (index(tape, '\n')) {
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(void)fprintf(stderr, "invalid characters in tape\n");
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exit(X_STARTUP);
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}
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if (rmthost(host) == 0)
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exit(X_STARTUP);
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#else
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(void)fprintf(stderr, "remote dump not enabled\n");
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exit(X_STARTUP);
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#endif
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}
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(void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
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if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
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signal(SIGHUP, sig);
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if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
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signal(SIGTRAP, sig);
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if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
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signal(SIGFPE, sig);
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if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
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signal(SIGBUS, sig);
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if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
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signal(SIGSEGV, sig);
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if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
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signal(SIGTERM, sig);
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if (signal(SIGINT, interrupt) == SIG_IGN)
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signal(SIGINT, SIG_IGN);
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getfstab(); /* /etc/fstab snarfed */
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/*
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* disk can be either the full special file name,
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* the suffix of the special file name,
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* the special name missing the leading '/',
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* the file system name with or without the leading '/'.
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*/
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dt = fstabsearch(disk);
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if (dt != NULL) {
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disk = rawname(dt->fs_spec);
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(void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
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(void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
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} else {
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(void)strncpy(spcl.c_dev, disk, NAMELEN);
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(void)strncpy(spcl.c_filesys, "an unlisted file system",
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NAMELEN);
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}
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spcl.c_dev[NAMELEN-1]='\0';
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spcl.c_filesys[NAMELEN-1]='\0';
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(void)strcpy(spcl.c_label, "none");
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(void)gethostname(spcl.c_host, NAMELEN);
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spcl.c_level = level - '0';
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spcl.c_type = TS_TAPE;
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if (!Tflag)
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getdumptime(); /* /etc/dumpdates snarfed */
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if (spcl.c_date == 0) {
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tmsg = "the epoch\n";
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} else {
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time_t t = _time64_to_time(spcl.c_date);
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tmsg = ctime(&t);
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}
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msg("Date of this level %c dump: %s", level, tmsg);
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if (spcl.c_ddate == 0) {
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tmsg = "the epoch\n";
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} else {
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time_t t = _time64_to_time(spcl.c_ddate);
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tmsg = ctime(&t);
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}
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msg("Date of last level %c dump: %s", lastlevel, tmsg);
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msg("Dumping %s ", disk);
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if (dt != NULL)
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msgtail("(%s) ", dt->fs_file);
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if (host)
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msgtail("to %s on host %s\n", tape, host);
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else
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msgtail("to %s\n", tape);
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if ((diskfd = open(disk, O_RDONLY)) < 0)
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err(X_STARTUP, "Cannot open %s", disk);
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if (fstat(diskfd, &sb) != 0)
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err(X_STARTUP, "%s: stat", disk);
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if (S_ISDIR(sb.st_mode))
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errx(X_STARTUP, "%s: unknown file system", disk);
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sync();
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sblock = (struct fs *)sblock_buf;
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for (i = 0; sblock_try[i] != -1; i++) {
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bread(sblock_try[i] >> dev_bshift, (char *) sblock, SBLOCKSIZE);
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if ((sblock->fs_magic == FS_UFS1_MAGIC ||
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(sblock->fs_magic == FS_UFS2_MAGIC &&
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sblock->fs_sblockloc == sblock_try[i])) &&
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sblock->fs_bsize <= MAXBSIZE &&
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sblock->fs_bsize >= sizeof(struct fs))
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break;
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}
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if (sblock_try[i] == -1)
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quit("Cannot find file system superblock\n");
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dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
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dev_bshift = ffs(dev_bsize) - 1;
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if (dev_bsize != (1 << dev_bshift))
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quit("dev_bsize (%ld) is not a power of 2", dev_bsize);
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tp_bshift = ffs(TP_BSIZE) - 1;
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if (TP_BSIZE != (1 << tp_bshift))
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quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
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maxino = sblock->fs_ipg * sblock->fs_ncg;
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mapsize = roundup(howmany(maxino, CHAR_BIT), TP_BSIZE);
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usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
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dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
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dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
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tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
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nonodump = spcl.c_level < honorlevel;
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passno = 1;
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setproctitle("%s: pass 1: regular files", disk);
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msg("mapping (Pass I) [regular files]\n");
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anydirskipped = mapfiles(maxino, &tapesize);
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passno = 2;
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setproctitle("%s: pass 2: directories", disk);
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msg("mapping (Pass II) [directories]\n");
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while (anydirskipped) {
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anydirskipped = mapdirs(maxino, &tapesize);
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}
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if (pipeout || unlimited) {
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tapesize += 10; /* 10 trailer blocks */
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msg("estimated %ld tape blocks.\n", tapesize);
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} else {
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double fetapes;
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if (blocksperfile)
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fetapes = (double) tapesize / blocksperfile;
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else if (cartridge) {
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/* Estimate number of tapes, assuming streaming stops at
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the end of each block written, and not in mid-block.
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Assume no erroneous blocks; this can be compensated
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for with an artificially low tape size. */
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fetapes =
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( (double) tapesize /* blocks */
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* TP_BSIZE /* bytes/block */
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* (1.0/density) /* 0.1" / byte " */
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+
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(double) tapesize /* blocks */
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* (1.0/ntrec) /* streaming-stops per block */
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* 15.48 /* 0.1" / streaming-stop " */
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) * (1.0 / tsize ); /* tape / 0.1" " */
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} else {
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/* Estimate number of tapes, for old fashioned 9-track
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tape */
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int tenthsperirg = (density == 625) ? 3 : 7;
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fetapes =
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( (double) tapesize /* blocks */
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* TP_BSIZE /* bytes / block */
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* (1.0/density) /* 0.1" / byte " */
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+
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(double) tapesize /* blocks */
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* (1.0/ntrec) /* IRG's / block */
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* tenthsperirg /* 0.1" / IRG " */
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) * (1.0 / tsize ); /* tape / 0.1" " */
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}
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etapes = fetapes; /* truncating assignment */
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etapes++;
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/* count the dumped inodes map on each additional tape */
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tapesize += (etapes - 1) *
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(howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
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tapesize += etapes + 10; /* headers + 10 trailer blks */
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msg("estimated %ld tape blocks on %3.2f tape(s).\n",
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tapesize, fetapes);
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}
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/*
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* If the user only wants an estimate of the number of
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* tapes, exit now.
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*/
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if (just_estimate)
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exit(0);
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/*
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* Allocate tape buffer.
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*/
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if (!alloctape())
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quit(
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"can't allocate tape buffers - try a smaller blocking factor.\n");
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startnewtape(1);
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(void)time((time_t *)&(tstart_writing));
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dumpmap(usedinomap, TS_CLRI, maxino - 1);
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passno = 3;
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setproctitle("%s: pass 3: directories", disk);
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msg("dumping (Pass III) [directories]\n");
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dirty = 0; /* XXX just to get gcc to shut up */
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for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
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if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */
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dirty = *map++;
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else
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dirty >>= 1;
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if ((dirty & 1) == 0)
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continue;
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/*
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* Skip directory inodes deleted and maybe reallocated
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*/
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dp = getino(ino, &mode);
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if (mode != IFDIR)
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continue;
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(void)dumpino(dp, ino);
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}
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passno = 4;
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setproctitle("%s: pass 4: regular files", disk);
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msg("dumping (Pass IV) [regular files]\n");
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for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
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if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */
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dirty = *map++;
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else
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dirty >>= 1;
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|
if ((dirty & 1) == 0)
|
|
continue;
|
|
/*
|
|
* Skip inodes deleted and reallocated as directories.
|
|
*/
|
|
dp = getino(ino, &mode);
|
|
if (mode == IFDIR)
|
|
continue;
|
|
(void)dumpino(dp, ino);
|
|
}
|
|
|
|
(void)time((time_t *)&(tend_writing));
|
|
spcl.c_type = TS_END;
|
|
for (i = 0; i < ntrec; i++)
|
|
writeheader(maxino - 1);
|
|
if (pipeout)
|
|
msg("DUMP: %jd tape blocks\n", (intmax_t)spcl.c_tapea);
|
|
else
|
|
msg("DUMP: %jd tape blocks on %d volume%s\n",
|
|
(intmax_t)spcl.c_tapea, spcl.c_volume,
|
|
(spcl.c_volume == 1) ? "" : "s");
|
|
|
|
/* report dump performance, avoid division through zero */
|
|
if (tend_writing - tstart_writing == 0)
|
|
msg("finished in less than a second\n");
|
|
else
|
|
msg("finished in %d seconds, throughput %jd KBytes/sec\n",
|
|
tend_writing - tstart_writing, (intmax_t)(spcl.c_tapea /
|
|
(tend_writing - tstart_writing)));
|
|
|
|
putdumptime();
|
|
trewind();
|
|
broadcast("DUMP IS DONE!\a\a\n");
|
|
msg("DUMP IS DONE\n");
|
|
Exit(X_FINOK);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: dump [-0123456789ac"
|
|
#ifdef KERBEROS
|
|
"k"
|
|
#endif
|
|
"nSu] [-B records] [-b blocksize] [-D dumpdates]\n"
|
|
" [-d density] [-f file] [-h level] [-s feet] "
|
|
"[-T date] filesystem\n"
|
|
" dump -W | -w\n");
|
|
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
|
|
numarg(const char *meaning, long vmin, long vmax)
|
|
{
|
|
char *p;
|
|
long val;
|
|
|
|
val = strtol(optarg, &p, 10);
|
|
if (*p)
|
|
errx(1, "illegal %s -- %s", meaning, optarg);
|
|
if (val < vmin || (vmax && val > vmax))
|
|
errx(1, "%s must be between %ld and %ld", meaning, vmin, vmax);
|
|
return (val);
|
|
}
|
|
|
|
void
|
|
sig(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(char *cp)
|
|
{
|
|
static char rawbuf[MAXPATHLEN];
|
|
char *dp;
|
|
struct stat sb;
|
|
|
|
if (stat(cp, &sb) == 0) {
|
|
/*
|
|
* If the name already refers to a raw device, return
|
|
* it immediately without tampering.
|
|
*/
|
|
if ((sb.st_mode & S_IFMT) == S_IFCHR)
|
|
return (cp);
|
|
}
|
|
|
|
dp = strrchr(cp, '/');
|
|
|
|
if (dp == NULL)
|
|
return (NULL);
|
|
*dp = '\0';
|
|
(void)strlcpy(rawbuf, cp, MAXPATHLEN - 1);
|
|
*dp = '/';
|
|
(void)strlcat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
|
|
(void)strlcat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
|
|
return (rawbuf);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/* 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 = malloc((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 'D':
|
|
case 'h':
|
|
case 's':
|
|
case 'T':
|
|
if (*argv == NULL) {
|
|
warnx("option requires an argument -- %c", *ap);
|
|
usage();
|
|
}
|
|
if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
|
|
err(1, NULL);
|
|
nargv[0][0] = '-';
|
|
nargv[0][1] = *ap;
|
|
(void)strcpy(&nargv[0][2], *argv);
|
|
++argv;
|
|
++nargv;
|
|
break;
|
|
default:
|
|
if (!flags) {
|
|
*p++ = '-';
|
|
flags = 1;
|
|
}
|
|
*p++ = *ap;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Terminate flags. */
|
|
if (flags) {
|
|
*p = '\0';
|
|
*nargv++ = flagsp;
|
|
}
|
|
|
|
/* Copy remaining arguments. */
|
|
while ((*nargv++ = *argv++));
|
|
|
|
/* Update argument count. */
|
|
*argcp = nargv - *argvp - 1;
|
|
}
|