629 lines
18 KiB
C
629 lines
18 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright (c) 2013, 2014 by Delphix. All rights reserved.
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* Copyright (c) 2014 Integros [integros.com]
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*/
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#include <ctype.h>
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#include <libnvpair.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <sys/dmu.h>
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#include <sys/zfs_ioctl.h>
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#include <zfs_fletcher.h>
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/*
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* If dump mode is enabled, the number of bytes to print per line
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*/
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#define BYTES_PER_LINE 16
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/*
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* If dump mode is enabled, the number of bytes to group together, separated
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* by newlines or spaces
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*/
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#define DUMP_GROUPING 4
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uint64_t total_write_size = 0;
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uint64_t total_stream_len = 0;
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FILE *send_stream = 0;
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boolean_t do_byteswap = B_FALSE;
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boolean_t do_cksum = B_TRUE;
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static void
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usage(void)
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{
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(void) fprintf(stderr, "usage: zstreamdump [-v] [-C] [-d] < file\n");
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(void) fprintf(stderr, "\t -v -- verbose\n");
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(void) fprintf(stderr, "\t -C -- suppress checksum verification\n");
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(void) fprintf(stderr, "\t -d -- dump contents of blocks modified, "
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"implies verbose\n");
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exit(1);
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}
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static void *
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safe_malloc(size_t size)
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{
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void *rv = malloc(size);
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if (rv == NULL) {
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(void) fprintf(stderr, "ERROR; failed to allocate %zu bytes\n",
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size);
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abort();
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}
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return (rv);
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}
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/*
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* ssread - send stream read.
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*
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* Read while computing incremental checksum
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*/
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static size_t
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ssread(void *buf, size_t len, zio_cksum_t *cksum)
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{
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size_t outlen;
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if ((outlen = fread(buf, len, 1, send_stream)) == 0)
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return (0);
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if (do_cksum) {
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if (do_byteswap)
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fletcher_4_incremental_byteswap(buf, len, cksum);
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else
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fletcher_4_incremental_native(buf, len, cksum);
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}
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total_stream_len += len;
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return (outlen);
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}
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static size_t
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read_hdr(dmu_replay_record_t *drr, zio_cksum_t *cksum)
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{
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ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum),
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==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t));
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size_t r = ssread(drr, sizeof (*drr) - sizeof (zio_cksum_t), cksum);
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if (r == 0)
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return (0);
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zio_cksum_t saved_cksum = *cksum;
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r = ssread(&drr->drr_u.drr_checksum.drr_checksum,
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sizeof (zio_cksum_t), cksum);
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if (r == 0)
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return (0);
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if (!ZIO_CHECKSUM_IS_ZERO(&drr->drr_u.drr_checksum.drr_checksum) &&
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!ZIO_CHECKSUM_EQUAL(saved_cksum,
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drr->drr_u.drr_checksum.drr_checksum)) {
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fprintf(stderr, "invalid checksum\n");
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(void) printf("Incorrect checksum in record header.\n");
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(void) printf("Expected checksum = %llx/%llx/%llx/%llx\n",
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saved_cksum.zc_word[0],
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saved_cksum.zc_word[1],
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saved_cksum.zc_word[2],
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saved_cksum.zc_word[3]);
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return (0);
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}
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return (sizeof (*drr));
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}
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/*
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* Print part of a block in ASCII characters
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*/
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static void
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print_ascii_block(char *subbuf, int length)
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{
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int i;
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for (i = 0; i < length; i++) {
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char char_print = isprint(subbuf[i]) ? subbuf[i] : '.';
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if (i != 0 && i % DUMP_GROUPING == 0) {
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(void) printf(" ");
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}
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(void) printf("%c", char_print);
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}
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(void) printf("\n");
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}
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/*
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* print_block - Dump the contents of a modified block to STDOUT
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*
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* Assume that buf has capacity evenly divisible by BYTES_PER_LINE
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*/
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static void
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print_block(char *buf, int length)
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{
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int i;
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/*
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* Start printing ASCII characters at a constant offset, after
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* the hex prints. Leave 3 characters per byte on a line (2 digit
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* hex number plus 1 space) plus spaces between characters and
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* groupings.
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*/
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int ascii_start = BYTES_PER_LINE * 3 +
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BYTES_PER_LINE / DUMP_GROUPING + 2;
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for (i = 0; i < length; i += BYTES_PER_LINE) {
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int j;
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int this_line_length = MIN(BYTES_PER_LINE, length - i);
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int print_offset = 0;
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for (j = 0; j < this_line_length; j++) {
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int buf_offset = i + j;
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/*
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* Separate every DUMP_GROUPING bytes by a space.
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*/
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if (buf_offset % DUMP_GROUPING == 0) {
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print_offset += printf(" ");
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}
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/*
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* Print the two-digit hex value for this byte.
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*/
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unsigned char hex_print = buf[buf_offset];
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print_offset += printf("%02x ", hex_print);
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}
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(void) printf("%*s", ascii_start - print_offset, " ");
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print_ascii_block(buf + i, this_line_length);
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}
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}
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int
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main(int argc, char *argv[])
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{
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char *buf = safe_malloc(SPA_MAXBLOCKSIZE);
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uint64_t drr_record_count[DRR_NUMTYPES] = { 0 };
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uint64_t total_records = 0;
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dmu_replay_record_t thedrr;
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dmu_replay_record_t *drr = &thedrr;
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struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
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struct drr_end *drre = &thedrr.drr_u.drr_end;
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struct drr_object *drro = &thedrr.drr_u.drr_object;
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struct drr_freeobjects *drrfo = &thedrr.drr_u.drr_freeobjects;
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struct drr_write *drrw = &thedrr.drr_u.drr_write;
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struct drr_write_byref *drrwbr = &thedrr.drr_u.drr_write_byref;
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struct drr_free *drrf = &thedrr.drr_u.drr_free;
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struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
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struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
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struct drr_checksum *drrc = &thedrr.drr_u.drr_checksum;
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char c;
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boolean_t verbose = B_FALSE;
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boolean_t very_verbose = B_FALSE;
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boolean_t first = B_TRUE;
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/*
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* dump flag controls whether the contents of any modified data blocks
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* are printed to the console during processing of the stream. Warning:
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* for large streams, this can obviously lead to massive prints.
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*/
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boolean_t dump = B_FALSE;
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int err;
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zio_cksum_t zc = { 0 };
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zio_cksum_t pcksum = { 0 };
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while ((c = getopt(argc, argv, ":vCd")) != -1) {
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switch (c) {
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case 'C':
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do_cksum = B_FALSE;
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break;
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case 'v':
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if (verbose)
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very_verbose = B_TRUE;
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verbose = B_TRUE;
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break;
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case 'd':
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dump = B_TRUE;
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verbose = B_TRUE;
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very_verbose = B_TRUE;
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break;
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case ':':
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(void) fprintf(stderr,
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"missing argument for '%c' option\n", optopt);
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usage();
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break;
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case '?':
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(void) fprintf(stderr, "invalid option '%c'\n",
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optopt);
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usage();
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}
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}
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if (isatty(STDIN_FILENO)) {
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(void) fprintf(stderr,
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"Error: Backup stream can not be read "
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"from a terminal.\n"
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"You must redirect standard input.\n");
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exit(1);
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}
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send_stream = stdin;
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pcksum = zc;
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while (read_hdr(drr, &zc)) {
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/*
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* If this is the first DMU record being processed, check for
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* the magic bytes and figure out the endian-ness based on them.
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*/
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if (first) {
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if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) {
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do_byteswap = B_TRUE;
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if (do_cksum) {
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ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
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/*
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* recalculate header checksum now
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* that we know it needs to be
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* byteswapped.
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*/
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fletcher_4_incremental_byteswap(drr,
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sizeof (dmu_replay_record_t), &zc);
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}
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} else if (drrb->drr_magic != DMU_BACKUP_MAGIC) {
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(void) fprintf(stderr, "Invalid stream "
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"(bad magic number)\n");
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exit(1);
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}
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first = B_FALSE;
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}
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if (do_byteswap) {
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drr->drr_type = BSWAP_32(drr->drr_type);
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drr->drr_payloadlen =
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BSWAP_32(drr->drr_payloadlen);
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}
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/*
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* At this point, the leading fields of the replay record
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* (drr_type and drr_payloadlen) have been byte-swapped if
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* necessary, but the rest of the data structure (the
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* union of type-specific structures) is still in its
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* original state.
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*/
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if (drr->drr_type >= DRR_NUMTYPES) {
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(void) printf("INVALID record found: type 0x%x\n",
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drr->drr_type);
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(void) printf("Aborting.\n");
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exit(1);
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}
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drr_record_count[drr->drr_type]++;
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total_records++;
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switch (drr->drr_type) {
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case DRR_BEGIN:
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if (do_byteswap) {
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drrb->drr_magic = BSWAP_64(drrb->drr_magic);
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drrb->drr_versioninfo =
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BSWAP_64(drrb->drr_versioninfo);
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drrb->drr_creation_time =
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BSWAP_64(drrb->drr_creation_time);
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drrb->drr_type = BSWAP_32(drrb->drr_type);
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drrb->drr_flags = BSWAP_32(drrb->drr_flags);
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drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
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drrb->drr_fromguid =
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BSWAP_64(drrb->drr_fromguid);
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}
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(void) printf("BEGIN record\n");
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(void) printf("\thdrtype = %lld\n",
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DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo));
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(void) printf("\tfeatures = %llx\n",
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DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo));
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(void) printf("\tmagic = %llx\n",
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(u_longlong_t)drrb->drr_magic);
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(void) printf("\tcreation_time = %llx\n",
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(u_longlong_t)drrb->drr_creation_time);
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(void) printf("\ttype = %u\n", drrb->drr_type);
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(void) printf("\tflags = 0x%x\n", drrb->drr_flags);
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(void) printf("\ttoguid = %llx\n",
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(u_longlong_t)drrb->drr_toguid);
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(void) printf("\tfromguid = %llx\n",
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(u_longlong_t)drrb->drr_fromguid);
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(void) printf("\ttoname = %s\n", drrb->drr_toname);
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if (verbose)
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(void) printf("\n");
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if (drr->drr_payloadlen != 0) {
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nvlist_t *nv;
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int sz = drr->drr_payloadlen;
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if (sz > SPA_MAXBLOCKSIZE) {
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free(buf);
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buf = safe_malloc(sz);
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}
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(void) ssread(buf, sz, &zc);
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if (ferror(send_stream))
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perror("fread");
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err = nvlist_unpack(buf, sz, &nv, 0);
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if (err)
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perror(strerror(err));
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nvlist_print(stdout, nv);
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nvlist_free(nv);
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}
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break;
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case DRR_END:
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if (do_byteswap) {
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drre->drr_checksum.zc_word[0] =
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BSWAP_64(drre->drr_checksum.zc_word[0]);
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drre->drr_checksum.zc_word[1] =
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BSWAP_64(drre->drr_checksum.zc_word[1]);
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drre->drr_checksum.zc_word[2] =
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BSWAP_64(drre->drr_checksum.zc_word[2]);
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drre->drr_checksum.zc_word[3] =
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BSWAP_64(drre->drr_checksum.zc_word[3]);
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}
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/*
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* We compare against the *previous* checksum
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* value, because the stored checksum is of
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* everything before the DRR_END record.
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*/
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if (do_cksum && !ZIO_CHECKSUM_EQUAL(drre->drr_checksum,
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pcksum)) {
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(void) printf("Expected checksum differs from "
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"checksum in stream.\n");
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(void) printf("Expected checksum = "
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"%llx/%llx/%llx/%llx\n",
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pcksum.zc_word[0],
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pcksum.zc_word[1],
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pcksum.zc_word[2],
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pcksum.zc_word[3]);
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}
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(void) printf("END checksum = %llx/%llx/%llx/%llx\n",
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drre->drr_checksum.zc_word[0],
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drre->drr_checksum.zc_word[1],
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drre->drr_checksum.zc_word[2],
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drre->drr_checksum.zc_word[3]);
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ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
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break;
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case DRR_OBJECT:
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if (do_byteswap) {
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drro->drr_object = BSWAP_64(drro->drr_object);
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drro->drr_type = BSWAP_32(drro->drr_type);
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drro->drr_bonustype =
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BSWAP_32(drro->drr_bonustype);
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drro->drr_blksz = BSWAP_32(drro->drr_blksz);
|
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drro->drr_bonuslen =
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BSWAP_32(drro->drr_bonuslen);
|
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drro->drr_toguid = BSWAP_64(drro->drr_toguid);
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}
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if (verbose) {
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(void) printf("OBJECT object = %llu type = %u "
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"bonustype = %u blksz = %u bonuslen = %u\n",
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(u_longlong_t)drro->drr_object,
|
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drro->drr_type,
|
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drro->drr_bonustype,
|
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drro->drr_blksz,
|
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drro->drr_bonuslen);
|
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}
|
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if (drro->drr_bonuslen > 0) {
|
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(void) ssread(buf,
|
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P2ROUNDUP(drro->drr_bonuslen, 8), &zc);
|
|
if (dump) {
|
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print_block(buf,
|
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P2ROUNDUP(drro->drr_bonuslen, 8));
|
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}
|
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}
|
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break;
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|
|
|
case DRR_FREEOBJECTS:
|
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if (do_byteswap) {
|
|
drrfo->drr_firstobj =
|
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BSWAP_64(drrfo->drr_firstobj);
|
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drrfo->drr_numobjs =
|
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BSWAP_64(drrfo->drr_numobjs);
|
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drrfo->drr_toguid = BSWAP_64(drrfo->drr_toguid);
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}
|
|
if (verbose) {
|
|
(void) printf("FREEOBJECTS firstobj = %llu "
|
|
"numobjs = %llu\n",
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(u_longlong_t)drrfo->drr_firstobj,
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(u_longlong_t)drrfo->drr_numobjs);
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}
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break;
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|
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case DRR_WRITE:
|
|
if (do_byteswap) {
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drrw->drr_object = BSWAP_64(drrw->drr_object);
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drrw->drr_type = BSWAP_32(drrw->drr_type);
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drrw->drr_offset = BSWAP_64(drrw->drr_offset);
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drrw->drr_length = BSWAP_64(drrw->drr_length);
|
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drrw->drr_toguid = BSWAP_64(drrw->drr_toguid);
|
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drrw->drr_key.ddk_prop =
|
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BSWAP_64(drrw->drr_key.ddk_prop);
|
|
}
|
|
/*
|
|
* If this is verbose and/or dump output,
|
|
* print info on the modified block
|
|
*/
|
|
if (verbose) {
|
|
(void) printf("WRITE object = %llu type = %u "
|
|
"checksum type = %u\n"
|
|
" offset = %llu length = %llu "
|
|
"props = %llx\n",
|
|
(u_longlong_t)drrw->drr_object,
|
|
drrw->drr_type,
|
|
drrw->drr_checksumtype,
|
|
(u_longlong_t)drrw->drr_offset,
|
|
(u_longlong_t)drrw->drr_length,
|
|
(u_longlong_t)drrw->drr_key.ddk_prop);
|
|
}
|
|
/*
|
|
* Read the contents of the block in from STDIN to buf
|
|
*/
|
|
(void) ssread(buf, drrw->drr_length, &zc);
|
|
/*
|
|
* If in dump mode
|
|
*/
|
|
if (dump) {
|
|
print_block(buf, drrw->drr_length);
|
|
}
|
|
total_write_size += drrw->drr_length;
|
|
break;
|
|
|
|
case DRR_WRITE_BYREF:
|
|
if (do_byteswap) {
|
|
drrwbr->drr_object =
|
|
BSWAP_64(drrwbr->drr_object);
|
|
drrwbr->drr_offset =
|
|
BSWAP_64(drrwbr->drr_offset);
|
|
drrwbr->drr_length =
|
|
BSWAP_64(drrwbr->drr_length);
|
|
drrwbr->drr_toguid =
|
|
BSWAP_64(drrwbr->drr_toguid);
|
|
drrwbr->drr_refguid =
|
|
BSWAP_64(drrwbr->drr_refguid);
|
|
drrwbr->drr_refobject =
|
|
BSWAP_64(drrwbr->drr_refobject);
|
|
drrwbr->drr_refoffset =
|
|
BSWAP_64(drrwbr->drr_refoffset);
|
|
drrwbr->drr_key.ddk_prop =
|
|
BSWAP_64(drrwbr->drr_key.ddk_prop);
|
|
}
|
|
if (verbose) {
|
|
(void) printf("WRITE_BYREF object = %llu "
|
|
"checksum type = %u props = %llx\n"
|
|
" offset = %llu length = %llu\n"
|
|
"toguid = %llx refguid = %llx\n"
|
|
" refobject = %llu refoffset = %llu\n",
|
|
(u_longlong_t)drrwbr->drr_object,
|
|
drrwbr->drr_checksumtype,
|
|
(u_longlong_t)drrwbr->drr_key.ddk_prop,
|
|
(u_longlong_t)drrwbr->drr_offset,
|
|
(u_longlong_t)drrwbr->drr_length,
|
|
(u_longlong_t)drrwbr->drr_toguid,
|
|
(u_longlong_t)drrwbr->drr_refguid,
|
|
(u_longlong_t)drrwbr->drr_refobject,
|
|
(u_longlong_t)drrwbr->drr_refoffset);
|
|
}
|
|
break;
|
|
|
|
case DRR_FREE:
|
|
if (do_byteswap) {
|
|
drrf->drr_object = BSWAP_64(drrf->drr_object);
|
|
drrf->drr_offset = BSWAP_64(drrf->drr_offset);
|
|
drrf->drr_length = BSWAP_64(drrf->drr_length);
|
|
}
|
|
if (verbose) {
|
|
(void) printf("FREE object = %llu "
|
|
"offset = %llu length = %lld\n",
|
|
(u_longlong_t)drrf->drr_object,
|
|
(u_longlong_t)drrf->drr_offset,
|
|
(longlong_t)drrf->drr_length);
|
|
}
|
|
break;
|
|
case DRR_SPILL:
|
|
if (do_byteswap) {
|
|
drrs->drr_object = BSWAP_64(drrs->drr_object);
|
|
drrs->drr_length = BSWAP_64(drrs->drr_length);
|
|
}
|
|
if (verbose) {
|
|
(void) printf("SPILL block for object = %llu "
|
|
"length = %llu\n", drrs->drr_object,
|
|
drrs->drr_length);
|
|
}
|
|
(void) ssread(buf, drrs->drr_length, &zc);
|
|
if (dump) {
|
|
print_block(buf, drrs->drr_length);
|
|
}
|
|
break;
|
|
case DRR_WRITE_EMBEDDED:
|
|
if (do_byteswap) {
|
|
drrwe->drr_object =
|
|
BSWAP_64(drrwe->drr_object);
|
|
drrwe->drr_offset =
|
|
BSWAP_64(drrwe->drr_offset);
|
|
drrwe->drr_length =
|
|
BSWAP_64(drrwe->drr_length);
|
|
drrwe->drr_toguid =
|
|
BSWAP_64(drrwe->drr_toguid);
|
|
drrwe->drr_lsize =
|
|
BSWAP_32(drrwe->drr_lsize);
|
|
drrwe->drr_psize =
|
|
BSWAP_32(drrwe->drr_psize);
|
|
}
|
|
if (verbose) {
|
|
(void) printf("WRITE_EMBEDDED object = %llu "
|
|
"offset = %llu length = %llu\n"
|
|
" toguid = %llx comp = %u etype = %u "
|
|
"lsize = %u psize = %u\n",
|
|
(u_longlong_t)drrwe->drr_object,
|
|
(u_longlong_t)drrwe->drr_offset,
|
|
(u_longlong_t)drrwe->drr_length,
|
|
(u_longlong_t)drrwe->drr_toguid,
|
|
drrwe->drr_compression,
|
|
drrwe->drr_etype,
|
|
drrwe->drr_lsize,
|
|
drrwe->drr_psize);
|
|
}
|
|
(void) ssread(buf,
|
|
P2ROUNDUP(drrwe->drr_psize, 8), &zc);
|
|
break;
|
|
}
|
|
if (drr->drr_type != DRR_BEGIN && very_verbose) {
|
|
(void) printf(" checksum = %llx/%llx/%llx/%llx\n",
|
|
(longlong_t)drrc->drr_checksum.zc_word[0],
|
|
(longlong_t)drrc->drr_checksum.zc_word[1],
|
|
(longlong_t)drrc->drr_checksum.zc_word[2],
|
|
(longlong_t)drrc->drr_checksum.zc_word[3]);
|
|
}
|
|
pcksum = zc;
|
|
}
|
|
free(buf);
|
|
|
|
/* Print final summary */
|
|
|
|
(void) printf("SUMMARY:\n");
|
|
(void) printf("\tTotal DRR_BEGIN records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_BEGIN]);
|
|
(void) printf("\tTotal DRR_END records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_END]);
|
|
(void) printf("\tTotal DRR_OBJECT records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_OBJECT]);
|
|
(void) printf("\tTotal DRR_FREEOBJECTS records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
|
|
(void) printf("\tTotal DRR_WRITE records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_WRITE]);
|
|
(void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
|
|
(void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
|
|
(void) printf("\tTotal DRR_FREE records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_FREE]);
|
|
(void) printf("\tTotal DRR_SPILL records = %lld\n",
|
|
(u_longlong_t)drr_record_count[DRR_SPILL]);
|
|
(void) printf("\tTotal records = %lld\n",
|
|
(u_longlong_t)total_records);
|
|
(void) printf("\tTotal write size = %lld (0x%llx)\n",
|
|
(u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
|
|
(void) printf("\tTotal stream length = %lld (0x%llx)\n",
|
|
(u_longlong_t)total_stream_len, (u_longlong_t)total_stream_len);
|
|
return (0);
|
|
}
|