618 lines
16 KiB
C
618 lines
16 KiB
C
/*-
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* Copyright (c) 1991, 1993
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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) 1991, 1993\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[] = "@(#)dumplfs.c 8.5 (Berkeley) 5/24/95";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <sys/time.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/lfs/lfs.h>
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#include <err.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 <stdio.h>
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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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#include "extern.h"
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static void addseg __P((char *));
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static void dump_cleaner_info __P((struct lfs *, void *));
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static void dump_dinode __P((struct dinode *));
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static void dump_ifile __P((int, struct lfs *, int));
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static int dump_ipage_ifile __P((int, IFILE *, int));
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static int dump_ipage_segusage __P((struct lfs *, int, IFILE *, int));
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static void dump_segment __P((int, int, daddr_t, struct lfs *, int));
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static int dump_sum __P((int, struct lfs *, SEGSUM *, int, daddr_t));
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static void dump_super __P((struct lfs *));
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static void usage __P((void));
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typedef struct seglist SEGLIST;
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struct seglist {
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SEGLIST *next;
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int num;
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};
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SEGLIST *seglist;
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int daddr_shift;
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char *special;
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/* Segment Usage formats */
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#define print_suheader \
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(void)printf("segnum\tflags\tnbytes\tninos\tnsums\tlastmod\n")
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#define print_suentry(i, sp) \
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(void)printf("%d\t%c%c%c\t%d\t%d\t%d\t%s", i, \
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(((sp)->su_flags & SEGUSE_ACTIVE) ? 'A' : ' '), \
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(((sp)->su_flags & SEGUSE_DIRTY) ? 'D' : 'C'), \
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(((sp)->su_flags & SEGUSE_SUPERBLOCK) ? 'S' : ' '), \
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(sp)->su_nbytes, (sp)->su_ninos, (sp)->su_nsums, \
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ctime((time_t *)&(sp)->su_lastmod))
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/* Ifile formats */
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#define print_iheader \
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(void)printf("inum\tstatus\tversion\tdaddr\t\tfreeptr\n")
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#define print_ientry(i, ip) \
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if (ip->if_daddr == LFS_UNUSED_DADDR) \
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(void)printf("%d\tFREE\t%d\t \t\t%d\n", \
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i, ip->if_version, ip->if_nextfree); \
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else \
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(void)printf("%d\tINUSE\t%d\t%8X \n", \
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i, ip->if_version, ip->if_daddr)
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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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struct lfs lfs_sb1, lfs_sb2, *lfs_master;
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daddr_t seg_addr;
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int ch, do_allsb, do_ientries, fd, segnum;
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do_allsb = 0;
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do_ientries = 0;
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while ((ch = getopt(argc, argv, "ais:")) != -1)
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switch(ch) {
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case 'a': /* Dump all superblocks */
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do_allsb = 1;
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break;
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case 'i': /* Dump ifile entries */
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do_ientries = 1;
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break;
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case 's': /* Dump out these segments */
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addseg(optarg);
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break;
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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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usage();
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special = argv[0];
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if ((fd = open(special, O_RDONLY, 0)) < 0)
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err(1, "%s", special);
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/* Read the first superblock */
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get(fd, LFS_LABELPAD, &lfs_sb1, sizeof(struct lfs));
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daddr_shift = lfs_sb1.lfs_bshift - lfs_sb1.lfs_fsbtodb;
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/*
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* Read the second superblock and figure out which check point is
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* most up to date.
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*/
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get(fd,
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lfs_sb1.lfs_sboffs[1] << daddr_shift, &lfs_sb2, sizeof(struct lfs));
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lfs_master = &lfs_sb1;
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if (lfs_sb1.lfs_tstamp < lfs_sb2.lfs_tstamp)
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lfs_master = &lfs_sb2;
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(void)printf("Master Superblock:\n");
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dump_super(lfs_master);
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dump_ifile(fd, lfs_master, do_ientries);
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if (seglist != NULL)
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for (; seglist != NULL; seglist = seglist->next) {
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seg_addr = lfs_master->lfs_sboffs[0] + seglist->num *
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(lfs_master->lfs_ssize << lfs_master->lfs_fsbtodb);
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dump_segment(fd,
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seglist->num, seg_addr, lfs_master, do_allsb);
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}
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else
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for (segnum = 0, seg_addr = lfs_master->lfs_sboffs[0];
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segnum < lfs_master->lfs_nseg; segnum++, seg_addr +=
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lfs_master->lfs_ssize << lfs_master->lfs_fsbtodb)
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dump_segment(fd,
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segnum, seg_addr, lfs_master, do_allsb);
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(void)close(fd);
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exit(0);
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}
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/*
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* We are reading all the blocks of an inode and dumping out the ifile table.
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* This code could be tighter, but this is a first pass at getting the stuff
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* printed out rather than making this code incredibly efficient.
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*/
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static void
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dump_ifile(fd, lfsp, do_ientries)
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int fd;
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struct lfs *lfsp;
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int do_ientries;
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{
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IFILE *ipage;
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struct dinode *dip, *dpage;
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daddr_t addr, *addrp, *dindir, *iaddrp, *indir;
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int block_limit, i, inum, j, nblocks, nsupb, psize;
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psize = lfsp->lfs_bsize;
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addr = lfsp->lfs_idaddr;
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if (!(dpage = malloc(psize)))
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err(1, NULL);
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get(fd, addr << daddr_shift, dpage, psize);
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for (dip = dpage + INOPB(lfsp) - 1; dip >= dpage; --dip)
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if (dip->di_inumber == LFS_IFILE_INUM)
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break;
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if (dip < dpage)
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errx(1, "unable to locate ifile inode");
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(void)printf("\nIFILE inode\n");
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dump_dinode(dip);
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(void)printf("\nIFILE contents\n");
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nblocks = dip->di_size >> lfsp->lfs_bshift;
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block_limit = MIN(nblocks, NDADDR);
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/* Get the direct block */
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if ((ipage = malloc(psize)) == NULL)
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err(1, NULL);
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for (inum = 0, addrp = dip->di_db, i = 0; i < block_limit;
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i++, addrp++) {
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get(fd, *addrp << daddr_shift, ipage, psize);
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if (i < lfsp->lfs_cleansz) {
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dump_cleaner_info(lfsp, ipage);
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print_suheader;
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continue;
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}
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if (i < (lfsp->lfs_segtabsz + lfsp->lfs_cleansz)) {
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inum = dump_ipage_segusage(lfsp, inum, ipage,
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lfsp->lfs_sepb);
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if (!inum)
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if(!do_ientries)
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goto e0;
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else
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print_iheader;
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} else
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inum = dump_ipage_ifile(inum, ipage, lfsp->lfs_ifpb);
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}
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if (nblocks <= NDADDR)
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goto e0;
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/* Dump out blocks off of single indirect block */
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if (!(indir = malloc(psize)))
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err(1, NULL);
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get(fd, dip->di_ib[0] << daddr_shift, indir, psize);
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block_limit = MIN(i + lfsp->lfs_nindir, nblocks);
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for (addrp = indir; i < block_limit; i++, addrp++) {
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if (*addrp == LFS_UNUSED_DADDR)
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break;
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get(fd, *addrp << daddr_shift,ipage, psize);
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if (i < lfsp->lfs_cleansz) {
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dump_cleaner_info(lfsp, ipage);
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continue;
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} else
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i -= lfsp->lfs_cleansz;
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if (i < lfsp->lfs_segtabsz) {
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inum = dump_ipage_segusage(lfsp, inum, ipage,
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lfsp->lfs_sepb);
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if (!inum)
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if(!do_ientries)
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goto e1;
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else
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print_iheader;
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} else
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inum = dump_ipage_ifile(inum, ipage, lfsp->lfs_ifpb);
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}
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if (nblocks <= lfsp->lfs_nindir * lfsp->lfs_ifpb)
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goto e1;
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/* Get the double indirect block */
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if (!(dindir = malloc(psize)))
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err(1, NULL);
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get(fd, dip->di_ib[1] << daddr_shift, dindir, psize);
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for (iaddrp = dindir, j = 0; j < lfsp->lfs_nindir; j++, iaddrp++) {
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if (*iaddrp == LFS_UNUSED_DADDR)
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break;
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get(fd, *iaddrp << daddr_shift, indir, psize);
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block_limit = MIN(i + lfsp->lfs_nindir, nblocks);
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for (addrp = indir; i < block_limit; i++, addrp++) {
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if (*addrp == LFS_UNUSED_DADDR)
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break;
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get(fd, *addrp << daddr_shift, ipage, psize);
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if (i < lfsp->lfs_cleansz) {
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dump_cleaner_info(lfsp, ipage);
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continue;
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} else
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i -= lfsp->lfs_cleansz;
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if (i < lfsp->lfs_segtabsz) {
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inum = dump_ipage_segusage(lfsp,
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inum, ipage, lfsp->lfs_sepb);
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if (!inum)
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if(!do_ientries)
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goto e2;
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else
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print_iheader;
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} else
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inum = dump_ipage_ifile(inum,
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ipage, lfsp->lfs_ifpb);
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}
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}
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e2: free(dindir);
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e1: free(indir);
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e0: free(dpage);
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free(ipage);
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}
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static int
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dump_ipage_ifile(i, pp, tot)
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int i;
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IFILE *pp;
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int tot;
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{
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IFILE *ip;
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int cnt, max;
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max = i + tot;
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for (ip = pp, cnt = i; cnt < max; cnt++, ip++)
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print_ientry(cnt, ip);
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return (max);
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}
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static int
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dump_ipage_segusage(lfsp, i, pp, tot)
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struct lfs *lfsp;
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int i;
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IFILE *pp;
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int tot;
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{
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SEGUSE *sp;
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int cnt, max;
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max = i + tot;
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for (sp = (SEGUSE *)pp, cnt = i;
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cnt < lfsp->lfs_nseg && cnt < max; cnt++, sp++)
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print_suentry(cnt, sp);
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if (max >= lfsp->lfs_nseg)
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return (0);
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else
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return (max);
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}
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static void
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dump_dinode(dip)
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struct dinode *dip;
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{
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int i;
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(void)printf("%s%d\t%s%d\t%s%d\t%s%d\t%s%d\n",
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"mode ", dip->di_mode,
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"nlink ", dip->di_nlink,
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"uid ", dip->di_uid,
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"gid ", dip->di_gid,
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"size ", dip->di_size);
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(void)printf("%s%s%s%s%s%s",
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"atime ", ctime(&dip->di_atime),
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"mtime ", ctime(&dip->di_mtime),
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"ctime ", ctime(&dip->di_ctime));
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(void)printf("inum %d\n", dip->di_inumber);
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(void)printf("Direct Addresses\n");
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for (i = 0; i < NDADDR; i++) {
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(void)printf("\t0x%X", dip->di_db[i]);
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if ((i % 6) == 5)
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(void)printf("\n");
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}
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for (i = 0; i < NIADDR; i++)
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(void)printf("\t0x%X", dip->di_ib[i]);
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(void)printf("\n");
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}
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static int
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dump_sum(fd, lfsp, sp, segnum, addr)
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struct lfs *lfsp;
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SEGSUM *sp;
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int fd, segnum;
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daddr_t addr;
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{
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FINFO *fp;
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daddr_t *dp;
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int i, j;
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int ck;
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int numbytes;
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struct dinode *inop;
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if (sp->ss_magic != SS_MAGIC ||
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sp->ss_sumsum != (ck = cksum(&sp->ss_datasum,
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LFS_SUMMARY_SIZE - sizeof(sp->ss_sumsum)))) {
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(void)printf("dumplfs: %s %d address 0x%lx\n",
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"corrupt summary block; segment", segnum, addr);
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return(0);
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}
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(void)printf("Segment Summary Info at 0x%lx\tmagic no: 0x%x\n",
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addr, sp->ss_magic);
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(void)printf(" %s0x%X\t%s%d\t%s%d\n %s0x%X\t%s0x%X",
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"next ", sp->ss_next,
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"nfinfo ", sp->ss_nfinfo,
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"ninos ", sp->ss_ninos,
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"sumsum ", sp->ss_sumsum,
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"datasum ", sp->ss_datasum );
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(void)printf("\tcreate %s", ctime((time_t *)&sp->ss_create));
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/* Dump out inode disk addresses */
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dp = (daddr_t *)sp;
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dp += LFS_SUMMARY_SIZE / sizeof(daddr_t);
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inop = malloc(1 << lfsp->lfs_bshift);
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printf(" Inode addresses:");
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numbytes = 0;
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for (dp--, i = 0; i < sp->ss_ninos; dp--) {
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numbytes += lfsp->lfs_bsize; /* add bytes for inode block */
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printf("\t0x%X {", *dp);
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get(fd, *dp << (lfsp->lfs_bshift - lfsp->lfs_fsbtodb), inop,
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(1 << lfsp->lfs_bshift));
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for (j = 0; i < sp->ss_ninos && j < INOPB(lfsp); j++, i++) {
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if (j > 0)
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(void)printf(", ");
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(void)printf("%d", inop[j].di_inumber);
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}
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(void)printf("}");
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if (((i/INOPB(lfsp)) % 4) == 3)
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(void)printf("\n");
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}
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free(inop);
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printf("\n");
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for (fp = (FINFO *)(sp + 1), i = 0; i < sp->ss_nfinfo; i++) {
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(void)printf(" FINFO for inode: %d version %d nblocks %d lastlength %d\n",
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fp->fi_ino, fp->fi_version, fp->fi_nblocks, fp->fi_lastlength);
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dp = &(fp->fi_blocks[0]);
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for (j = 0; j < fp->fi_nblocks; j++, dp++) {
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(void)printf("\t%d", *dp);
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if ((j % 8) == 7)
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(void)printf("\n");
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if (j == fp->fi_nblocks - 1)
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numbytes += fp->fi_lastlength;
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else
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numbytes += lfsp->lfs_bsize;
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}
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if ((j % 8) != 0)
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(void)printf("\n");
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fp = (FINFO *)dp;
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}
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return (numbytes);
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}
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static void
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dump_segment(fd, segnum, addr, lfsp, dump_sb)
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int fd, segnum;
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daddr_t addr;
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struct lfs *lfsp;
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int dump_sb;
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{
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struct lfs lfs_sb, *sbp;
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SEGSUM *sump;
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char sumblock[LFS_SUMMARY_SIZE];
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int did_one, nbytes, sb;
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off_t sum_offset, super_off;
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(void)printf("\nSEGMENT %d (Disk Address 0x%X)\n",
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addr >> (lfsp->lfs_segshift - daddr_shift), addr);
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sum_offset = (addr << (lfsp->lfs_bshift - lfsp->lfs_fsbtodb));
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sb = 0;
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did_one = 0;
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do {
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get(fd, sum_offset, sumblock, LFS_SUMMARY_SIZE);
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sump = (SEGSUM *)sumblock;
|
|
if (sump->ss_sumsum != cksum (&sump->ss_datasum,
|
|
LFS_SUMMARY_SIZE - sizeof(sump->ss_sumsum))) {
|
|
sbp = (struct lfs *)sump;
|
|
if (sb = (sbp->lfs_magic == LFS_MAGIC)) {
|
|
super_off = sum_offset;
|
|
sum_offset += LFS_SBPAD;
|
|
} else if (did_one)
|
|
break;
|
|
else {
|
|
printf("Segment at 0x%X corrupt\n", addr);
|
|
break;
|
|
}
|
|
} else {
|
|
nbytes = dump_sum(fd, lfsp, sump, segnum, sum_offset >>
|
|
(lfsp->lfs_bshift - lfsp->lfs_fsbtodb));
|
|
if (nbytes)
|
|
sum_offset += LFS_SUMMARY_SIZE + nbytes;
|
|
else
|
|
sum_offset = 0;
|
|
did_one = 1;
|
|
}
|
|
} while (sum_offset);
|
|
|
|
if (dump_sb && sb) {
|
|
get(fd, super_off, &lfs_sb, sizeof(struct lfs));
|
|
dump_super(&lfs_sb);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dump_super(lfsp)
|
|
struct lfs *lfsp;
|
|
{
|
|
int i;
|
|
|
|
(void)printf("%s0x%X\t%s0x%X\t%s%d\t%s%d\n",
|
|
"magic ", lfsp->lfs_magic,
|
|
"version ", lfsp->lfs_version,
|
|
"size ", lfsp->lfs_size,
|
|
"ssize ", lfsp->lfs_ssize);
|
|
(void)printf("%s%d\t\t%s%d\t%s%d\t%s%d\n",
|
|
"dsize ", lfsp->lfs_dsize,
|
|
"bsize ", lfsp->lfs_bsize,
|
|
"fsize ", lfsp->lfs_fsize,
|
|
"frag ", lfsp->lfs_frag);
|
|
|
|
(void)printf("%s%d\t\t%s%d\t%s%d\t%s%d\n",
|
|
"minfree ", lfsp->lfs_minfree,
|
|
"inopb ", lfsp->lfs_inopb,
|
|
"ifpb ", lfsp->lfs_ifpb,
|
|
"nindir ", lfsp->lfs_nindir);
|
|
|
|
(void)printf("%s%d\t\t%s%d\t%s%d\t%s%d\n",
|
|
"nseg ", lfsp->lfs_nseg,
|
|
"nspf ", lfsp->lfs_nspf,
|
|
"cleansz ", lfsp->lfs_cleansz,
|
|
"segtabsz ", lfsp->lfs_segtabsz);
|
|
|
|
(void)printf("%s0x%X\t%s%d\t%s0x%qX\t%s%d\n",
|
|
"segmask ", lfsp->lfs_segmask,
|
|
"segshift ", lfsp->lfs_segshift,
|
|
"bmask ", lfsp->lfs_bmask,
|
|
"bshift ", lfsp->lfs_bshift);
|
|
|
|
(void)printf("%s0x%qX\t\t%s%d\t%s0x%qX\t%s%d\n",
|
|
"ffmask ", lfsp->lfs_ffmask,
|
|
"ffshift ", lfsp->lfs_ffshift,
|
|
"fbmask ", lfsp->lfs_fbmask,
|
|
"fbshift ", lfsp->lfs_fbshift);
|
|
|
|
(void)printf("%s%d\t%s%d\t%s0x%X\t%s0x%qx\n",
|
|
"sushift ", lfsp->lfs_sushift,
|
|
"fsbtodb ", lfsp->lfs_fsbtodb,
|
|
"cksum ", lfsp->lfs_cksum,
|
|
"maxfilesize ", lfsp->lfs_maxfilesize);
|
|
|
|
(void)printf("Superblock disk addresses:\t");
|
|
for (i = 0; i < LFS_MAXNUMSB; i++) {
|
|
(void)printf(" 0x%X", lfsp->lfs_sboffs[i]);
|
|
if ( i == (LFS_MAXNUMSB >> 1))
|
|
(void)printf("\n\t\t\t\t");
|
|
}
|
|
(void)printf("\n");
|
|
|
|
(void)printf("Checkpoint Info\n");
|
|
(void)printf("%s%d\t%s0x%X\t%s%d\n",
|
|
"free ", lfsp->lfs_free,
|
|
"idaddr ", lfsp->lfs_idaddr,
|
|
"ifile ", lfsp->lfs_ifile);
|
|
(void)printf("%s%d\t%s%d\t%s%d\n",
|
|
"bfree ", lfsp->lfs_bfree,
|
|
"avail ", lfsp->lfs_avail,
|
|
"uinodes ", lfsp->lfs_uinodes);
|
|
(void)printf("%s%d\t%s0x%X\t%s0x%X\n%s0x%X\t%s0x%X\t",
|
|
"nfiles ", lfsp->lfs_nfiles,
|
|
"lastseg ", lfsp->lfs_lastseg,
|
|
"nextseg ", lfsp->lfs_nextseg,
|
|
"curseg ", lfsp->lfs_curseg,
|
|
"offset ", lfsp->lfs_offset);
|
|
(void)printf("tstamp %s", ctime((time_t *)&lfsp->lfs_tstamp));
|
|
(void)printf("\nIn-Memory Information\n");
|
|
(void)printf("%s%d\t%s0x%X\t%s%d%s%d\t%s%d\n",
|
|
"seglock ", lfsp->lfs_seglock,
|
|
"iocount ", lfsp->lfs_iocount,
|
|
"writer ", lfsp->lfs_writer,
|
|
"dirops ", lfsp->lfs_dirops,
|
|
"doifile ", lfsp->lfs_doifile);
|
|
(void)printf("%s%d\t%s%d\t%s0x%X\t%s%d\n",
|
|
"nactive ", lfsp->lfs_nactive,
|
|
"fmod ", lfsp->lfs_fmod,
|
|
"clean ", lfsp->lfs_clean,
|
|
"ronly ", lfsp->lfs_ronly);
|
|
}
|
|
|
|
static void
|
|
addseg(arg)
|
|
char *arg;
|
|
{
|
|
SEGLIST *p;
|
|
|
|
if ((p = malloc(sizeof(SEGLIST))) == NULL)
|
|
err(1, NULL);
|
|
p->next = seglist;
|
|
p->num = atoi(arg);
|
|
seglist = p;
|
|
}
|
|
|
|
static void
|
|
dump_cleaner_info(lfsp, ipage)
|
|
struct lfs *lfsp;
|
|
void *ipage;
|
|
{
|
|
CLEANERINFO *cip;
|
|
|
|
cip = (CLEANERINFO *)ipage;
|
|
(void)printf("segments clean\t%d\tsegments dirty\t%d\n\n",
|
|
cip->clean, cip->dirty);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: dumplfs [-ai] [-s segnum] file\n");
|
|
exit(1);
|
|
}
|