static int libzfs_update_stats(zfs_handle_t *p_zfs)
{
objset_t *p_os;
nvlist_t *pnv_allprops, *pnv_userprops;
int i_error;
if((i_error = dmu_objset_hold(p_zfs->zfs_name, FTAG, &p_os)))
return i_error;
dmu_objset_fast_stat(p_os, &p_zfs->zfs_dmustats);
if((i_error = dsl_prop_get_all(p_os, &pnv_allprops)) == 0)
{
dmu_objset_stats(p_os, pnv_allprops);
if(!p_zfs->zfs_dmustats.dds_inconsistent)
{
if(dmu_objset_type(p_os) == DMU_OST_ZVOL)
assert(zvol_get_stats(p_os, pnv_allprops) == 0);
}
}
dmu_objset_rele(p_os, FTAG);
// Continue processing the stats
if((pnv_userprops = process_user_props(p_zfs, pnv_allprops)) == NULL)
{
nvlist_free(pnv_allprops);
return 1;
}
nvlist_free(p_zfs->zfs_props);
nvlist_free(p_zfs->zfs_user_props);
p_zfs->zfs_props = pnv_allprops;
p_zfs->zfs_user_props = pnv_userprops;
return 0;
}
/*
* dsl_crypto_key_unload
*
* Remove the key from the in memory keystore.
*
* First we have to remove the minor node for a ZVOL or unmount
* the filesystem. This is so that we flush all pending IO for it to disk
* so we won't need to encrypt anything with this key. Anything in flight
* should already have a lock on the keys it needs.
* We can't assume that userland has already successfully unmounted the
* dataset though in many cases it will have.
*
* If the key can't be removed return the failure back to our caller.
*/
int
dsl_crypto_key_unload(const char *dsname)
{
dsl_dataset_t *ds;
objset_t *os;
int error;
spa_t *spa;
dsl_pool_t *dp;
#ifdef _KERNEL
dmu_objset_type_t os_type;
//vfs_t *vfsp;
struct vfsmount *vfsp;
#endif /* _KERNEL */
error = dsl_pool_hold(dsname, FTAG, &dp);
if (error != 0)
return (error);
/* XXX - should we use own_exclusive() here? */
if ((error = dsl_dataset_hold(dp, dsname, FTAG, &ds)) != 0) {
dsl_pool_rele(dp, FTAG);
return (error);
}
if ((error = dmu_objset_from_ds(ds, &os)) != 0) {
dsl_dataset_rele(ds, FTAG);
dsl_pool_rele(dp, FTAG);
return (error);
}
#ifdef _KERNEL
/*
* Make sure that the device node has gone for ZVOLs
* and that filesystems are umounted.
*/
#if 0 // FIXME
os_type = dmu_objset_type(os);
if (os_type == DMU_OST_ZVOL) {
error = zvol_remove_minor(dsname);
if (error == ENXIO)
error = 0;
} else if (os_type == DMU_OST_ZFS) {
vfsp = zfs_get_vfs(dsname);
if (vfsp != NULL) {
error = vn_vfswlock(vfsp->vfs_vnodecovered);
VFS_RELE(vfsp);
if (error == 0)
error = dounmount(vfsp, 0, CRED());
}
}
if (error != 0) {
dsl_dataset_rele(ds, FTAG);
return (error);
}
#endif
#endif /* _KERNEL */
/*
* Make sure all dbufs are synced.
*
* It is essential for encrypted datasets to ensure that
* there is no further pending IO before removing the key.
*/
if (dmu_objset_is_dirty(os, 0)) // FIXME, 0?
txg_wait_synced(dmu_objset_pool(os), 0);
dmu_objset_evict_dbufs(os);
spa = dsl_dataset_get_spa(ds);
error = zcrypt_keystore_remove(spa, ds->ds_object);
dsl_dataset_rele(ds, FTAG);
dsl_pool_rele(dp, FTAG);
return (error);
}
int
sa_setup(objset_t *os, uint64_t sa_obj, sa_attr_reg_t *reg_attrs, int count,
sa_attr_type_t **user_table)
{
zap_cursor_t zc;
zap_attribute_t za;
sa_os_t *sa;
dmu_objset_type_t ostype = dmu_objset_type(os);
sa_attr_type_t *tb;
int error;
mutex_enter(&os->os_lock);
if (os->os_sa) {
mutex_enter(&os->os_sa->sa_lock);
mutex_exit(&os->os_lock);
tb = os->os_sa->sa_user_table;
mutex_exit(&os->os_sa->sa_lock);
*user_table = tb;
return (0);
}
sa = kmem_zalloc(sizeof (sa_os_t), KM_SLEEP);
mutex_init(&sa->sa_lock, NULL, MUTEX_DEFAULT, NULL);
sa->sa_master_obj = sa_obj;
os->os_sa = sa;
mutex_enter(&sa->sa_lock);
mutex_exit(&os->os_lock);
avl_create(&sa->sa_layout_num_tree, layout_num_compare,
sizeof (sa_lot_t), offsetof(sa_lot_t, lot_num_node));
avl_create(&sa->sa_layout_hash_tree, layout_hash_compare,
sizeof (sa_lot_t), offsetof(sa_lot_t, lot_hash_node));
if (sa_obj) {
error = zap_lookup(os, sa_obj, SA_LAYOUTS,
8, 1, &sa->sa_layout_attr_obj);
if (error != 0 && error != ENOENT)
goto fail;
error = zap_lookup(os, sa_obj, SA_REGISTRY,
8, 1, &sa->sa_reg_attr_obj);
if (error != 0 && error != ENOENT)
goto fail;
}
if ((error = sa_attr_table_setup(os, reg_attrs, count)) != 0)
goto fail;
if (sa->sa_layout_attr_obj != 0) {
uint64_t layout_count;
error = zap_count(os, sa->sa_layout_attr_obj,
&layout_count);
/*
* Layout number count should be > 0
*/
if (error || (error == 0 && layout_count == 0)) {
if (error == 0)
error = EINVAL;
goto fail;
}
for (zap_cursor_init(&zc, os, sa->sa_layout_attr_obj);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
zap_cursor_advance(&zc)) {
sa_attr_type_t *lot_attrs;
uint64_t lot_num;
lot_attrs = kmem_zalloc(sizeof (sa_attr_type_t) *
za.za_num_integers, KM_SLEEP);
if ((error = (zap_lookup(os, sa->sa_layout_attr_obj,
za.za_name, 2, za.za_num_integers,
lot_attrs))) != 0) {
kmem_free(lot_attrs, sizeof (sa_attr_type_t) *
za.za_num_integers);
break;
}
VERIFY(ddi_strtoull(za.za_name, NULL, 10,
(unsigned long long *)&lot_num) == 0);
(void) sa_add_layout_entry(os, lot_attrs,
za.za_num_integers, lot_num,
sa_layout_info_hash(lot_attrs,
za.za_num_integers), B_FALSE, NULL);
kmem_free(lot_attrs, sizeof (sa_attr_type_t) *
za.za_num_integers);
}
zap_cursor_fini(&zc);
/*
* Make sure layout count matches number of entries added
* to AVL tree
*/
if (avl_numnodes(&sa->sa_layout_num_tree) != layout_count) {
ASSERT(error != 0);
goto fail;
}
}
/* Add special layout number for old ZNODES */
if (ostype == DMU_OST_ZFS) {
(void) sa_add_layout_entry(os, sa_legacy_zpl_layout,
sa_legacy_attr_count, 0,
sa_layout_info_hash(sa_legacy_zpl_layout,
sa_legacy_attr_count), B_FALSE, NULL);
(void) sa_add_layout_entry(os, sa_dummy_zpl_layout, 0, 1,
0, B_FALSE, NULL);
}
*user_table = os->os_sa->sa_user_table;
mutex_exit(&sa->sa_lock);
return (0);
fail:
os->os_sa = NULL;
sa_free_attr_table(sa);
if (sa->sa_user_table)
kmem_free(sa->sa_user_table, sa->sa_user_table_sz);
mutex_exit(&sa->sa_lock);
kmem_free(sa, sizeof (sa_os_t));
return ((error == ECKSUM) ? EIO : error);
}
static int
sa_attr_table_setup(objset_t *os, sa_attr_reg_t *reg_attrs, int count)
{
sa_os_t *sa = os->os_sa;
uint64_t sa_attr_count = 0;
uint64_t sa_reg_count;
int error = 0;
uint64_t attr_value;
sa_attr_table_t *tb;
zap_cursor_t zc;
zap_attribute_t za;
int registered_count = 0;
int i;
dmu_objset_type_t ostype = dmu_objset_type(os);
sa->sa_user_table =
kmem_zalloc(count * sizeof (sa_attr_type_t), KM_SLEEP);
sa->sa_user_table_sz = count * sizeof (sa_attr_type_t);
if (sa->sa_reg_attr_obj != 0) {
error = zap_count(os, sa->sa_reg_attr_obj,
&sa_attr_count);
/*
* Make sure we retrieved a count and that it isn't zero
*/
if (error || (error == 0 && sa_attr_count == 0)) {
if (error == 0)
error = EINVAL;
goto bail;
}
sa_reg_count = sa_attr_count;
}
if (ostype == DMU_OST_ZFS && sa_attr_count == 0)
sa_attr_count += sa_legacy_attr_count;
/* Allocate attribute numbers for attributes that aren't registered */
for (i = 0; i != count; i++) {
boolean_t found = B_FALSE;
int j;
if (ostype == DMU_OST_ZFS) {
for (j = 0; j != sa_legacy_attr_count; j++) {
if (strcmp(reg_attrs[i].sa_name,
sa_legacy_attrs[j].sa_name) == 0) {
sa->sa_user_table[i] =
sa_legacy_attrs[j].sa_attr;
found = B_TRUE;
}
}
}
if (found)
continue;
if (sa->sa_reg_attr_obj)
error = zap_lookup(os, sa->sa_reg_attr_obj,
reg_attrs[i].sa_name, 8, 1, &attr_value);
else
error = ENOENT;
switch (error) {
case ENOENT:
sa->sa_user_table[i] = (sa_attr_type_t)sa_attr_count;
sa_attr_count++;
break;
case 0:
sa->sa_user_table[i] = ATTR_NUM(attr_value);
break;
default:
goto bail;
}
}
sa->sa_num_attrs = sa_attr_count;
tb = sa->sa_attr_table =
kmem_zalloc(sizeof (sa_attr_table_t) * sa_attr_count, KM_SLEEP);
/*
* Attribute table is constructed from requested attribute list,
* previously foreign registered attributes, and also the legacy
* ZPL set of attributes.
*/
if (sa->sa_reg_attr_obj) {
for (zap_cursor_init(&zc, os, sa->sa_reg_attr_obj);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
zap_cursor_advance(&zc)) {
uint64_t value;
value = za.za_first_integer;
registered_count++;
tb[ATTR_NUM(value)].sa_attr = ATTR_NUM(value);
tb[ATTR_NUM(value)].sa_length = ATTR_LENGTH(value);
tb[ATTR_NUM(value)].sa_byteswap = ATTR_BSWAP(value);
tb[ATTR_NUM(value)].sa_registered = B_TRUE;
if (tb[ATTR_NUM(value)].sa_name) {
continue;
}
tb[ATTR_NUM(value)].sa_name =
kmem_zalloc(strlen(za.za_name) +1, KM_SLEEP);
(void) strlcpy(tb[ATTR_NUM(value)].sa_name, za.za_name,
strlen(za.za_name) +1);
}
zap_cursor_fini(&zc);
/*
* Make sure we processed the correct number of registered
* attributes
*/
if (registered_count != sa_reg_count) {
ASSERT(error != 0);
goto bail;
}
}
if (ostype == DMU_OST_ZFS) {
for (i = 0; i != sa_legacy_attr_count; i++) {
if (tb[i].sa_name)
continue;
tb[i].sa_attr = sa_legacy_attrs[i].sa_attr;
tb[i].sa_length = sa_legacy_attrs[i].sa_length;
tb[i].sa_byteswap = sa_legacy_attrs[i].sa_byteswap;
tb[i].sa_registered = B_FALSE;
tb[i].sa_name =
kmem_zalloc(strlen(sa_legacy_attrs[i].sa_name) +1,
KM_SLEEP);
(void) strlcpy(tb[i].sa_name,
sa_legacy_attrs[i].sa_name,
strlen(sa_legacy_attrs[i].sa_name) + 1);
}
}
for (i = 0; i != count; i++) {
sa_attr_type_t attr_id;
attr_id = sa->sa_user_table[i];
if (tb[attr_id].sa_name)
continue;
tb[attr_id].sa_length = reg_attrs[i].sa_length;
tb[attr_id].sa_byteswap = reg_attrs[i].sa_byteswap;
tb[attr_id].sa_attr = attr_id;
tb[attr_id].sa_name =
kmem_zalloc(strlen(reg_attrs[i].sa_name) + 1, KM_SLEEP);
(void) strlcpy(tb[attr_id].sa_name, reg_attrs[i].sa_name,
strlen(reg_attrs[i].sa_name) + 1);
}
sa->sa_need_attr_registration =
(sa_attr_count != registered_count);
return (0);
bail:
kmem_free(sa->sa_user_table, count * sizeof (sa_attr_type_t));
sa->sa_user_table = NULL;
sa_free_attr_table(sa);
return ((error != 0) ? error : EINVAL);
}
