56d5f6db85
an array. The bug became obvious in the old system where the array was only 32 characters long (now MAXPATHLEN). Dump honored its name then (:-) and dumped its core when calling dump -w for a fstab that contained rather long NFS file system names. Even though this is rather unlikely to happen now, a bug is a bug:)
561 lines
14 KiB
C
561 lines
14 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 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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static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 4/15/94";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#ifdef sunos
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#include <sys/vnode.h>
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#include <ufs/inode.h>
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#include <ufs/fs.h>
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#else
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#include <ufs/ffs/fs.h>
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#include <ufs/ufs/dinode.h>
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#endif
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <signal.h>
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#include <stdio.h>
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#ifdef __STDC__
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#endif
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#include "dump.h"
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#include "pathnames.h"
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#ifndef SBOFF
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#define SBOFF (SBLOCK * DEV_BSIZE)
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#endif
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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" */
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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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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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static long numarg __P((int, char *, long, long, int *, char ***));
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static __dead void missingarg __P((int, char *));
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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register ino_t ino;
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register int dirty;
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register struct dinode *dp;
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register struct fstab *dt;
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register char *map;
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register char *cp;
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int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
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ino_t maxino;
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spcl.c_date = 0;
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(void)time((time_t *)&spcl.c_date);
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tsize = 0; /* Default later, based on 'c' option for cart tapes */
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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 == 1) {
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(void) fprintf(stderr, "Must specify a key.\n");
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Exit(X_ABORT);
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}
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argv++;
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argc -= 2;
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for (cp = *argv++; cp != NULL && *cp != '\0'; cp++) {
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switch (*cp) {
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case '-':
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break;
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case 'w':
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lastdump('w'); /* tell us only what has to be done */
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exit(0);
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case 'W': /* what to do */
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lastdump('W'); /* tell us state of what is done */
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exit(0); /* do nothing else */
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case 'f': /* output file */
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if (argc < 1)
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missingarg('f', "output file");
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tape = *argv++;
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argc--;
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break;
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case 'd': /* density, in bits per inch */
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density = numarg('d', "density",
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10L, 327670L, &argc, &argv) / 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 's': /* tape size, feet */
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tsize = numarg('s', "size",
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1L, 0L, &argc, &argv) * 12 * 10;
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break;
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case 'T': /* time of last dump */
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if (argc < 1)
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missingarg('T', "time of last dump");
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spcl.c_ddate = unctime(*argv);
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if (spcl.c_ddate < 0) {
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(void)fprintf(stderr, "bad time \"%s\"\n",
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*argv);
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exit(X_ABORT);
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}
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Tflag = 1;
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lastlevel = '?';
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argc--;
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argv++;
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break;
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case 'b': /* blocks per tape write */
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ntrec = numarg('b', "number of blocks per write",
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1L, 1000L, &argc, &argv);
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break;
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case 'B': /* blocks per output file */
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blocksperfile = numarg('B', "number of blocks per file",
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1L, 0L, &argc, &argv);
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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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/* 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 = *cp;
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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 'n': /* notify operators */
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notify = 1;
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break;
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case 'h':
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honorlevel = numarg('h', "honor level",
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0L, 10L, &argc, &argv);
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break;
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default:
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(void)fprintf(stderr, "bad key '%c'\n", *cp);
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exit(X_ABORT);
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}
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}
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if (argc < 1) {
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(void)fprintf(stderr, "Must specify disk or filesystem\n");
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exit(X_ABORT);
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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_ABORT);
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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_ABORT);
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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 {
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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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*/
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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 (index(tape, ':')) {
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host = tape;
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tape = index(host, ':');
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*tape++ = '\0';
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#ifdef RDUMP
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if (rmthost(host) == 0)
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exit(X_ABORT);
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#else
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(void)fprintf(stderr, "remote dump not enabled\n");
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exit(X_ABORT);
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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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set_operators(); /* /etc/group snarfed */
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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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(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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msg("Date of this level %c dump: %s", level,
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spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
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msg("Date of last level %c dump: %s", lastlevel,
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spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
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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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msg("Cannot open %s\n", disk);
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exit(X_ABORT);
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}
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sync();
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sblock = (struct fs *)sblock_buf;
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bread(SBOFF, (char *) sblock, SBSIZE);
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if (sblock->fs_magic != FS_MAGIC)
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quit("bad sblock magic number\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 (%d) 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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#ifdef FS_44INODEFMT
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if (sblock->fs_inodefmt >= FS_44INODEFMT)
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spcl.c_flags |= DR_NEWINODEFMT;
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#endif
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maxino = sblock->fs_ipg * sblock->fs_ncg;
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mapsize = roundup(howmany(maxino, NBBY), 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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msg("mapping (Pass I) [regular files]\n");
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anydirskipped = mapfiles(maxino, &tapesize);
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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) {
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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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( 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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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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( 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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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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* Allocate tape buffer.
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*/
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if (!alloctape())
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quit("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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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) % NBBY) == 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);
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|
if ((dp->di_mode & IFMT) != IFDIR)
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|
continue;
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|
(void)dumpino(dp, ino);
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|
}
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|
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msg("dumping (Pass IV) [regular files]\n");
|
|
for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
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|
int mode;
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|
|
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if (((ino - 1) % NBBY) == 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 inodes deleted and reallocated as directories.
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|
*/
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dp = getino(ino);
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mode = dp->di_mode & IFMT;
|
|
if (mode == IFDIR)
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|
continue;
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(void)dumpino(dp, ino);
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|
}
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|
|
spcl.c_type = TS_END;
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|
for (i = 0; i < ntrec; i++)
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writeheader(maxino - 1);
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if (pipeout)
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|
msg("DUMP: %ld tape blocks\n",spcl.c_tapea);
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|
else
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|
msg("DUMP: %ld tape blocks on %d volumes(s)\n",
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spcl.c_tapea, spcl.c_volume);
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|
putdumptime();
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|
trewind();
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|
broadcast("DUMP IS DONE!\7\7\n");
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|
msg("DUMP IS DONE\n");
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|
Exit(X_FINOK);
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|
/* NOTREACHED */
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|
}
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|
|
|
/*
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|
* Pick up a numeric argument. It must be nonnegative and in the given
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* range (except that a vmax of 0 means unlimited).
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|
*/
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|
static long
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|
numarg(letter, meaning, vmin, vmax, pargc, pargv)
|
|
int letter;
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|
char *meaning;
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|
long vmin, vmax;
|
|
int *pargc;
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|
char ***pargv;
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|
{
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|
register char *p;
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|
long val;
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|
char *str;
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|
|
|
if (--*pargc < 0)
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|
missingarg(letter, meaning);
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str = *(*pargv)++;
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for (p = str; *p; p++)
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|
if (!isdigit(*p))
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|
goto bad;
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|
val = atol(str);
|
|
if (val < vmin || (vmax && val > vmax))
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|
goto bad;
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|
return (val);
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|
|
|
bad:
|
|
(void)fprintf(stderr, "bad '%c' (%s) value \"%s\"\n",
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|
letter, meaning, str);
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|
exit(X_ABORT);
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|
}
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|
|
|
static __dead void
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|
missingarg(letter, meaning)
|
|
int letter;
|
|
char *meaning;
|
|
{
|
|
|
|
(void)fprintf(stderr, "The '%c' flag (%s) requires an argument\n",
|
|
letter, meaning);
|
|
exit(X_ABORT);
|
|
}
|
|
|
|
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[MAXPATHLEN];
|
|
char *dp = rindex(cp, '/');
|
|
|
|
if (dp == NULL)
|
|
return (NULL);
|
|
*dp = '\0';
|
|
(void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
|
|
*dp = '/';
|
|
(void)strncat(rawbuf, "/r", strlen(rawbuf) - (MAXPATHLEN - 1));
|
|
(void)strncat(rawbuf, dp + 1, strlen(rawbuf) - (MAXPATHLEN - 1));
|
|
return (rawbuf);
|
|
}
|
|
|
|
#ifdef sunos
|
|
const char *
|
|
strerror(errnum)
|
|
int errnum;
|
|
{
|
|
extern int sys_nerr;
|
|
extern const char *const sys_errlist[];
|
|
|
|
if (errnum < sys_nerr)
|
|
return (sys_errlist[errnum]);
|
|
else
|
|
return ("bogus errno in strerror");
|
|
}
|
|
#endif
|