dumplfs.c

早期freebsd实现

}

static int
dump_ipage_ifile(i, pp, tot)
	int i;
	IFILE *pp;
	int tot;
{
	IFILE *ip;
	int cnt, max;

	max = i + tot;

	for (ip = pp, cnt = i; cnt < max; cnt++, ip++)
		print_ientry(cnt, ip);
	return (max);
}

static int
dump_ipage_segusage(lfsp, i, pp, tot)
	struct lfs *lfsp;
	int i;
	IFILE *pp;
	int tot;
{
	SEGUSE *sp;
	int cnt, max;

	max = i + tot;
	for (sp = (SEGUSE *)pp, cnt = i;
	     cnt < lfsp->lfs_nseg && cnt < max; cnt++, sp++)
		print_suentry(cnt, sp);
	if (max >= lfsp->lfs_nseg)
		return (0);
	else
		return (max);
}

static void
dump_dinode(dip)
	struct dinode *dip;
{
	int i;

	(void)printf("%s%d\t%s%d\t%s%d\t%s%d\t%s%d\n",
		"mode  ", dip->di_mode,
		"nlink ", dip->di_nlink,
		"uid   ", dip->di_uid,
		"gid   ", dip->di_gid,
		"size  ", dip->di_size);
	(void)printf("%s%s%s%s%s%s",
		"atime ", ctime(&dip->di_atime.ts_sec),
		"mtime ", ctime(&dip->di_mtime.ts_sec),
		"ctime ", ctime(&dip->di_ctime.ts_sec));
	(void)printf("inum  %d\n", dip->di_inumber);
	(void)printf("Direct Addresses\n");
	for (i = 0; i < NDADDR; i++) {
		(void)printf("\t0x%X", dip->di_db[i]);
		if ((i % 6) == 5)
			(void)printf("\n");
	}
	for (i = 0; i < NIADDR; i++)
		(void)printf("\t0x%X", dip->di_ib[i]);
	(void)printf("\n");
}

static int
dump_sum(fd, lfsp, sp, segnum, addr)
	struct lfs *lfsp;
	SEGSUM *sp;
	int fd, segnum;
	daddr_t addr;
{
	FINFO *fp;
	long *dp;
	int i, j;
	int ck;
	int numblocks;
	struct dinode *inop;

	if (sp->ss_sumsum != (ck = cksum(&sp->ss_datasum, 
	    LFS_SUMMARY_SIZE - sizeof(sp->ss_sumsum)))) {
		(void)printf("dumplfs: %s %d address 0x%lx\n",
		    "corrupt summary block; segment", segnum, addr);
		return(0);
	}

	(void)printf("Segment Summary Info at 0x%lx\n", addr);
	(void)printf("    %s0x%X\t%s%d\t%s%d\n    %s0x%X\t%s0x%X",
		"next     ", sp->ss_next,
		"nfinfo   ", sp->ss_nfinfo,
		"ninos    ", sp->ss_ninos,
		"sumsum   ", sp->ss_sumsum,
		"datasum  ", sp->ss_datasum );
	(void)printf("\tcreate   %s", ctime((time_t *)&sp->ss_create));

	numblocks = (sp->ss_ninos + INOPB(lfsp) - 1) / INOPB(lfsp);

	/* Dump out inode disk addresses */
	dp = (daddr_t *)sp;
	dp += LFS_SUMMARY_SIZE / sizeof(daddr_t);
	inop = malloc(1 << lfsp->lfs_bshift);
	printf("    Inode addresses:");
	for (dp--, i = 0; i < sp->ss_ninos; dp--) {
		printf("\t0x%X {", *dp);
		get(fd, *dp << (lfsp->lfs_bshift - lfsp->lfs_fsbtodb), inop, 
		    (1 << lfsp->lfs_bshift));
		for (j = 0; i < sp->ss_ninos && j < INOPB(lfsp); j++, i++) {
			if (j > 0) 
				(void)printf(", ");
			(void)printf("%d", inop[j].di_inumber);
		}
		(void)printf("}");
		if (((i/INOPB(lfsp)) % 4) == 3)
			(void)printf("\n");
	}
	free(inop);

	printf("\n");
	for (fp = (FINFO *)(sp + 1), i = 0; i < sp->ss_nfinfo; i++) {
		numblocks += fp->fi_nblocks;
		(void)printf("    FINFO for inode: %d version %d nblocks %d\n",
		    fp->fi_ino, fp->fi_version, fp->fi_nblocks);
		dp = &(fp->fi_blocks[0]);
		for (j = 0; j < fp->fi_nblocks; j++, dp++) {
			(void)printf("\t%d", *dp);
			if ((j % 8) == 7)
				(void)printf("\n");
		}
		if ((j % 8) != 0)
			(void)printf("\n");
		fp = (FINFO *)dp;
	}
	return (numblocks);
}

static void
dump_segment(fd, segnum, addr, lfsp, dump_sb)
	int fd, segnum;
	daddr_t addr;
	struct lfs *lfsp;
	int dump_sb;
{
	struct lfs lfs_sb, *sbp;
	SEGSUM *sump;
	char sumblock[LFS_SUMMARY_SIZE];
	int did_one, nblocks, sb;
	off_t sum_offset, super_off;

	(void)printf("\nSEGMENT %d (Disk Address 0x%X)\n",
	    addr >> (lfsp->lfs_segshift - daddr_shift), addr);
	sum_offset = (addr << (lfsp->lfs_bshift - lfsp->lfs_fsbtodb));

	sb = 0;
	did_one = 0;
	do {
		get(fd, sum_offset, sumblock, LFS_SUMMARY_SIZE);
		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 {
			nblocks = dump_sum(fd, lfsp, sump, segnum, sum_offset >>
			     (lfsp->lfs_bshift - lfsp->lfs_fsbtodb));
			if (nblocks)
				sum_offset += LFS_SUMMARY_SIZE + 
					(nblocks << lfsp->lfs_bshift);
			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%X\t%s%d\n",
		"segmask  ", lfsp->lfs_segmask,
		"segshift ", lfsp->lfs_segshift,
		"bmask    ", lfsp->lfs_bmask,
		"bshift   ", lfsp->lfs_bshift);

	(void)printf("%s0x%X\t\t%s%d\t%s0x%X\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("%s", strerror(errno));
	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);
}