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zdb: dump ZAP_FLAG_UINT64_KEY ZAPs properly 

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>
This commit is contained in:
Rob Norris 2024-07-09 21:04:47 +10:00
parent 326040b285
commit edc6068668
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]);