static int
ddt_zap_walk(objset_t *os, uint64_t object, ddt_entry_t *dde, uint64_t *walk)
{
zap_cursor_t zc;
zap_attribute_t za;
int error;
zap_cursor_init_serialized(&zc, os, object, *walk);
if ((error = zap_cursor_retrieve(&zc, &za)) == 0) {
uchar_t cbuf[sizeof (dde->dde_phys) + 1];
uint64_t csize = za.za_num_integers;
ASSERT(za.za_integer_length == 1);
error = zap_lookup_uint64(os, object, (uint64_t *)za.za_name,
DDT_KEY_WORDS, 1, csize, cbuf);
ASSERT(error == 0);
if (error == 0) {
ddt_decompress(cbuf, dde->dde_phys, csize,
sizeof (dde->dde_phys));
dde->dde_key = *(ddt_key_t *)za.za_name;
}
zap_cursor_advance(&zc);
*walk = zap_cursor_serialize(&zc);
}
zap_cursor_fini(&zc);
return (error);
}
static int
ddt_zap_lookup(objset_t *os, uint64_t object, ddt_entry_t *dde)
{
uchar_t *cbuf;
uint64_t one, csize;
int error;
cbuf = kmem_alloc(sizeof (dde->dde_phys) + 1, KM_PUSHPAGE);
error = zap_length_uint64(os, object, (uint64_t *)&dde->dde_key,
DDT_KEY_WORDS, &one, &csize);
if (error)
goto out;
ASSERT(one == 1);
ASSERT(csize <= (sizeof (dde->dde_phys) + 1));
error = zap_lookup_uint64(os, object, (uint64_t *)&dde->dde_key,
DDT_KEY_WORDS, 1, csize, cbuf);
if (error)
goto out;
ddt_decompress(cbuf, dde->dde_phys, csize, sizeof (dde->dde_phys));
out:
kmem_free(cbuf, sizeof (dde->dde_phys) + 1);
return (error);
}
static int
ddt_zap_lookup(objset_t *os, uint64_t object, ddt_entry_t *dde)
{
uchar_t cbuf[sizeof (dde->dde_phys) + 1];
uint64_t one, csize;
int error;
error = zap_length_uint64(os, object, (uint64_t *)&dde->dde_key,
DDT_KEY_WORDS, &one, &csize);
if (error)
return (error);
ASSERT(one == 1);
ASSERT(csize <= sizeof (cbuf));
error = zap_lookup_uint64(os, object, (uint64_t *)&dde->dde_key,
DDT_KEY_WORDS, 1, csize, cbuf);
if (error)
return (error);
ddt_decompress(cbuf, dde->dde_phys, csize, sizeof (dde->dde_phys));
return (0);
}
