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zdb: dump ZAP_FLAG_UINT64_KEY ZAPs properly (#16334)

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These are used for DDT and BRT stores. There's limited information
available to produce meaningful output, but at least we can put
something on screen rather than crashing.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.

Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
This commit is contained in:
Rob Norris 2024-07-18 05:02:28 +10:00 committed by GitHub
parent 5de3ac2236
commit dc91e74524
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GPG key ID: B5690EEEBB952194
1 changed files with 26 additions and 4 deletions
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30
cmd/zdb/zdb.c
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@ -48,6 +48,7 @@
#include <sys/spa_impl.h>
#include <sys/dmu.h>
#include <sys/zap.h>
#include <sys/zap_impl.h>
#include <sys/fs/zfs.h>
#include <sys/zfs_znode.h>
#include <sys/zfs_sa.h>
@ -1126,16 +1127,33 @@ dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
for (zap_cursor_init(&zc, os, object);
zap_cursor_retrieve(&zc, &attr) == 0;
zap_cursor_advance(&zc)) {
(void) printf("\t\t%s = ", attr.za_name);
boolean_t key64 =
!!(zap_getflags(zc.zc_zap) & ZAP_FLAG_UINT64_KEY);
if (key64)
(void) printf("\t\t0x%010lx = ",
*(uint64_t *)attr.za_name);
else
(void) printf("\t\t%s = ", attr.za_name);
if (attr.za_num_integers == 0) {
(void) printf("\n");
continue;
}
prop = umem_zalloc(attr.za_num_integers *
attr.za_integer_length, UMEM_NOFAIL);
(void) zap_lookup(os, object, attr.za_name,
attr.za_integer_length, attr.za_num_integers, prop);
if (attr.za_integer_length == 1) {
if (key64)
(void) zap_lookup_uint64(os, object,
(const uint64_t *)attr.za_name, 1,
attr.za_integer_length, attr.za_num_integers,
prop);
else
(void) zap_lookup(os, object, attr.za_name,
attr.za_integer_length, attr.za_num_integers,
prop);
if (attr.za_integer_length == 1 && !key64) {
if (strcmp(attr.za_name,
DSL_CRYPTO_KEY_MASTER_KEY) == 0 ||
strcmp(attr.za_name,
@ -1154,6 +1172,10 @@ dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
} else {
for (i = 0; i < attr.za_num_integers; i++) {
switch (attr.za_integer_length) {
case 1:
(void) printf("%u ",
((uint8_t *)prop)[i]);
break;
case 2:
(void) printf("%u ",
((uint16_t *)prop)[i]);