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 __u64 osd_index_it_store(const struct lu_env *env,
const struct dt_it *di)
{
struct osd_zap_it *it = (struct osd_zap_it *)di;
it->ozi_reset = 0;
RETURN((__u64)zap_cursor_serialize(it->ozi_zc));
}
int
zfs_userspace_many(zfs_sb_t *zsb, zfs_userquota_prop_t type,
uint64_t *cookiep, void *vbuf, uint64_t *bufsizep)
{
int error;
zap_cursor_t zc;
zap_attribute_t za;
zfs_useracct_t *buf = vbuf;
uint64_t obj;
int offset = 0;
if (!dmu_objset_userspace_present(zsb->z_os))
return (SET_ERROR(ENOTSUP));
if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED ||
type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA) &&
!dmu_objset_userobjspace_present(zsb->z_os))
return (SET_ERROR(ENOTSUP));
obj = zfs_userquota_prop_to_obj(zsb, type);
if (obj == ZFS_NO_OBJECT) {
*bufsizep = 0;
return (0);
}
if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED)
offset = DMU_OBJACCT_PREFIX_LEN;
for (zap_cursor_init_serialized(&zc, zsb->z_os, obj, *cookiep);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
zap_cursor_advance(&zc)) {
if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) >
*bufsizep)
break;
/*
* skip object quota (with zap name prefix DMU_OBJACCT_PREFIX)
* when dealing with block quota and vice versa.
*/
if ((offset > 0) != (strncmp(za.za_name, DMU_OBJACCT_PREFIX,
DMU_OBJACCT_PREFIX_LEN) == 0))
continue;
fuidstr_to_sid(zsb, za.za_name + offset,
buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid);
buf->zu_space = za.za_first_integer;
buf++;
}
if (error == ENOENT)
error = 0;
ASSERT3U((uintptr_t)buf - (uintptr_t)vbuf, <=, *bufsizep);
*bufsizep = (uintptr_t)buf - (uintptr_t)vbuf;
*cookiep = zap_cursor_serialize(&zc);
zap_cursor_fini(&zc);
return (error);
}
int
zfs_userspace_many(zfs_sb_t *zsb, zfs_userquota_prop_t type,
uint64_t *cookiep, void *vbuf, uint64_t *bufsizep)
{
int error;
zap_cursor_t zc;
zap_attribute_t za;
zfs_useracct_t *buf = vbuf;
uint64_t obj;
if (!dmu_objset_userspace_present(zsb->z_os))
return (SET_ERROR(ENOTSUP));
obj = zfs_userquota_prop_to_obj(zsb, type);
if (obj == 0) {
*bufsizep = 0;
return (0);
}
for (zap_cursor_init_serialized(&zc, zsb->z_os, obj, *cookiep);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
zap_cursor_advance(&zc)) {
if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) >
*bufsizep)
break;
fuidstr_to_sid(zsb, za.za_name,
buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid);
buf->zu_space = za.za_first_integer;
buf++;
}
if (error == ENOENT)
error = 0;
ASSERT3U((uintptr_t)buf - (uintptr_t)vbuf, <=, *bufsizep);
*bufsizep = (uintptr_t)buf - (uintptr_t)vbuf;
*cookiep = zap_cursor_serialize(&zc);
zap_cursor_fini(&zc);
return (error);
}
int
dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
uint64_t *idp, uint64_t *offp, boolean_t *case_conflict)
{
dsl_dataset_t *ds = os->os->os_dsl_dataset;
zap_cursor_t cursor;
zap_attribute_t attr;
if (ds->ds_phys->ds_snapnames_zapobj == 0)
return (ENOENT);
zap_cursor_init_serialized(&cursor,
ds->ds_dir->dd_pool->dp_meta_objset,
ds->ds_phys->ds_snapnames_zapobj, *offp);
if (zap_cursor_retrieve(&cursor, &attr) != 0) {
zap_cursor_fini(&cursor);
return (ENOENT);
}
if (strlen(attr.za_name) + 1 > namelen) {
zap_cursor_fini(&cursor);
return (ENAMETOOLONG);
}
(void) strcpy(name, attr.za_name);
if (idp)
*idp = attr.za_first_integer;
if (case_conflict)
*case_conflict = attr.za_normalization_conflict;
zap_cursor_advance(&cursor);
*offp = zap_cursor_serialize(&cursor);
zap_cursor_fini(&cursor);
return (0);
}
int
dmu_dir_list_next(objset_t *os, int namelen, char *name,
uint64_t *idp, uint64_t *offp)
{
dsl_dir_t *dd = os->os->os_dsl_dataset->ds_dir;
zap_cursor_t cursor;
zap_attribute_t attr;
/* there is no next dir on a snapshot! */
if (os->os->os_dsl_dataset->ds_object !=
dd->dd_phys->dd_head_dataset_obj)
return (ENOENT);
zap_cursor_init_serialized(&cursor,
dd->dd_pool->dp_meta_objset,
dd->dd_phys->dd_child_dir_zapobj, *offp);
if (zap_cursor_retrieve(&cursor, &attr) != 0) {
zap_cursor_fini(&cursor);
return (ENOENT);
}
if (strlen(attr.za_name) + 1 > namelen) {
zap_cursor_fini(&cursor);
return (ENAMETOOLONG);
}
(void) strcpy(name, attr.za_name);
if (idp)
*idp = attr.za_first_integer;
zap_cursor_advance(&cursor);
*offp = zap_cursor_serialize(&cursor);
zap_cursor_fini(&cursor);
return (0);
}
