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spa_prop_get: require caller to supply output nvlist

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All callers to spa_prop_get() and spa_prop_get_nvlist() supplied their
own preallocated nvlist (except ztest), so we can remove the option to
have them allocate one if none is supplied.

This sidesteps a bug in spa_prop_get(), where the error var wasn't
initialised, which could lead to the provided nvlist being freed at the
end.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16505
This commit is contained in:
Rob Norris
2024-09-07 01:45:58 +10:00
committed by GitHub
parent 17dd66deda
commit b109925820
4 changed files with 53 additions and 66 deletions
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cmd/ztest.c
+3 -2
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@@ -6215,13 +6215,14 @@ void
ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
nvlist_t *props = NULL;
(void) pthread_rwlock_rdlock(&ztest_name_lock);
(void) ztest_spa_prop_set_uint64(ZPOOL_PROP_AUTOTRIM, ztest_random(2));
VERIFY0(spa_prop_get(ztest_spa, &props));
nvlist_t *props = fnvlist_alloc();
VERIFY0(spa_prop_get(ztest_spa, props));
if (ztest_opts.zo_verbose >= 6)
dump_nvlist(props, 4);