/**
* Restore iterator from cookie. if the \a hash isn't found,
* restore the first valid record.
*
* \param di - osd iterator
* \param hash - iterator location cookie
*
* \retval +ve - di points to exact matched key
* \retval 0 - di points to the first valid record
* \retval -ve - failure
*/
static int osd_it_acct_load(const struct lu_env *env,
const struct dt_it *di, __u64 hash)
{
struct osd_it_quota *it = (struct osd_it_quota *)di;
struct osd_device *osd = osd_obj2dev(it->oiq_obj);
zap_attribute_t *za = &osd_oti_get(env)->oti_za;
zap_cursor_t *zc;
int rc;
ENTRY;
/* create new cursor pointing to the new hash */
rc = osd_zap_cursor_init(&zc, osd->od_os, it->oiq_oid, hash);
if (rc)
RETURN(rc);
osd_zap_cursor_fini(it->oiq_zc);
it->oiq_zc = zc;
it->oiq_reset = 0;
rc = -zap_cursor_retrieve(it->oiq_zc, za);
if (rc == 0)
rc = 1;
else if (rc == -ENOENT)
rc = 0;
RETURN(rc);
}
/**
* Free given iterator.
*
* \param di - osd iterator
*/
static void osd_it_acct_fini(const struct lu_env *env, struct dt_it *di)
{
struct osd_thread_info *info = osd_oti_get(env);
struct osd_it_quota *it = (struct osd_it_quota *)di;
ENTRY;
osd_zap_cursor_fini(it->oiq_zc);
lu_object_put(env, &it->oiq_obj->oo_dt.do_lu);
if (it != &info->oti_it_quota)
OBD_FREE_PTR(it);
else
info->oti_it_inline = 0;
EXIT;
}
int osd_xattrs_destroy(const struct lu_env *env,
struct osd_object *obj, struct osd_thandle *oh)
{
struct osd_device *osd = osd_obj2dev(obj);
dmu_tx_t *tx = oh->ot_tx;
zap_attribute_t *za = &osd_oti_get(env)->oti_za;
zap_cursor_t *zc;
uint64_t xid;
int rc;
/* The transaction must have been assigned to a transaction group. */
LASSERT(tx->tx_txg != 0);
if (obj->oo_xattr == ZFS_NO_OBJECT)
return 0; /* Nothing to do for SA xattrs */
/* Free the ZAP holding the xattrs */
rc = osd_zap_cursor_init(&zc, osd->od_os, obj->oo_xattr, 0);
if (rc)
return rc;
while (zap_cursor_retrieve(zc, za) == 0) {
LASSERT(za->za_num_integers == 1);
LASSERT(za->za_integer_length == sizeof(uint64_t));
rc = -zap_lookup(osd->od_os, obj->oo_xattr, za->za_name,
sizeof(uint64_t), 1, &xid);
if (rc) {
CERROR("%s: lookup xattr %s failed: rc = %d\n",
osd->od_svname, za->za_name, rc);
} else {
rc = -dmu_object_free(osd->od_os, xid, tx);
if (rc)
CERROR("%s: free xattr %s failed: rc = %d\n",
osd->od_svname, za->za_name, rc);
}
zap_cursor_advance(zc);
}
osd_zap_cursor_fini(zc);
rc = -dmu_object_free(osd->od_os, obj->oo_xattr, tx);
if (rc)
CERROR("%s: free xattr "LPU64" failed: rc = %d\n",
osd->od_svname, obj->oo_xattr, rc);
return rc;
}
void osd_declare_xattrs_destroy(const struct lu_env *env,
struct osd_object *obj, struct osd_thandle *oh)
{
struct osd_device *osd = osd_obj2dev(obj);
zap_attribute_t *za = &osd_oti_get(env)->oti_za;
uint64_t oid = obj->oo_xattr, xid;
dmu_tx_t *tx = oh->ot_tx;
zap_cursor_t *zc;
int rc;
if (oid == ZFS_NO_OBJECT)
return; /* Nothing to do for SA xattrs */
/* Declare to free the ZAP holding xattrs */
dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
rc = osd_zap_cursor_init(&zc, osd->od_os, oid, 0);
if (rc)
goto out;
while (zap_cursor_retrieve(zc, za) == 0) {
LASSERT(za->za_num_integers == 1);
LASSERT(za->za_integer_length == sizeof(uint64_t));
rc = -zap_lookup(osd->od_os, oid, za->za_name,
sizeof(uint64_t), 1, &xid);
if (rc) {
CERROR("%s: xattr %s lookup failed: rc = %d\n",
osd->od_svname, za->za_name, rc);
break;
}
dmu_tx_hold_free(tx, xid, 0, DMU_OBJECT_END);
zap_cursor_advance(zc);
}
osd_zap_cursor_fini(zc);
out:
if (rc && tx->tx_err == 0)
tx->tx_err = -rc;
}
int osd_xattr_list(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *lb)
{
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
zap_attribute_t *za = &osd_oti_get(env)->oti_za;
zap_cursor_t *zc;
int rc, counted;
ENTRY;
LASSERT(obj->oo_db != NULL);
LASSERT(osd_invariant(obj));
LASSERT(dt_object_exists(dt));
down_read(&obj->oo_guard);
rc = osd_sa_xattr_list(env, obj, lb);
if (rc < 0)
GOTO(out, rc);
counted = rc;
/* continue with dnode xattr if any */
if (obj->oo_xattr == ZFS_NO_OBJECT)
GOTO(out, rc = counted);
rc = osd_zap_cursor_init(&zc, osd->od_os, obj->oo_xattr, 0);
if (rc)
GOTO(out, rc);
while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
if (!osd_obj2dev(obj)->od_posix_acl &&
(strcmp(za->za_name, POSIX_ACL_XATTR_ACCESS) == 0 ||
strcmp(za->za_name, POSIX_ACL_XATTR_DEFAULT) == 0)) {
zap_cursor_advance(zc);
continue;
}
rc = strlen(za->za_name);
if (lb->lb_buf != NULL) {
if (counted + rc + 1 > lb->lb_len)
GOTO(out_fini, rc = -ERANGE);
memcpy(lb->lb_buf + counted, za->za_name, rc + 1);
}
counted += rc + 1;
zap_cursor_advance(zc);
}
if (rc == -ENOENT) /* no more kes in the index */
rc = 0;
else if (unlikely(rc < 0))
GOTO(out_fini, rc);
rc = counted;
out_fini:
osd_zap_cursor_fini(zc);
out:
up_read(&obj->oo_guard);
RETURN(rc);
}
