static int osd_declare_object_destroy(const struct lu_env *env,
struct dt_object *dt,
struct thandle *th)
{
char *buf = osd_oti_get(env)->oti_str;
const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
int rc;
uint64_t zapid;
ENTRY;
LASSERT(th != NULL);
LASSERT(dt_object_exists(dt));
oh = container_of0(th, struct osd_thandle, ot_super);
LASSERT(oh->ot_tx != NULL);
/* declare that we'll remove object from fid-dnode mapping */
zapid = osd_get_name_n_idx(env, osd, fid, buf);
dmu_tx_hold_bonus(oh->ot_tx, zapid);
dmu_tx_hold_zap(oh->ot_tx, zapid, FALSE, buf);
osd_declare_xattrs_destroy(env, obj, oh);
/* declare that we'll remove object from inode accounting ZAPs */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, FALSE, buf);
dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, FALSE, buf);
/* one less inode */
rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
obj->oo_attr.la_gid, -1, oh, false, NULL, false);
if (rc)
RETURN(rc);
/* data to be truncated */
rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
obj->oo_attr.la_gid, 0, oh, true, NULL, false);
if (rc)
RETURN(rc);
osd_object_set_destroy_type(obj);
if (obj->oo_destroy == OSD_DESTROY_SYNC)
dmu_tx_hold_free(oh->ot_tx, obj->oo_db->db_object,
0, DMU_OBJECT_END);
else
dmu_tx_hold_zap(oh->ot_tx, osd->od_unlinkedid, TRUE, NULL);
RETURN(0);
}
static ssize_t osd_declare_write(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, loff_t pos,
struct thandle *th)
{
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t oid;
ENTRY;
oh = container_of0(th, struct osd_thandle, ot_super);
/* in some cases declare can race with creation (e.g. llog)
* and we need to wait till object is initialized. notice
* LOHA_EXISTs is supposed to be the last step in the
* initialization */
/* declare possible size change. notice we can't check
* current size here as another thread can change it */
if (dt_object_exists(dt)) {
LASSERT(obj->oo_db);
oid = obj->oo_db->db_object;
dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
} else {
oid = DMU_NEW_OBJECT;
dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
}
/* XXX: we still miss for append declaration support in ZFS
* -1 means append which is used by llog mostly, llog
* can grow upto LLOG_MIN_CHUNK_SIZE*8 records */
if (pos == -1)
pos = max_t(loff_t, 256 * 8 * LLOG_MIN_CHUNK_SIZE,
obj->oo_attr.la_size + (2 << 20));
dmu_tx_hold_write(oh->ot_tx, oid, pos, buf->lb_len);
/* dt_declare_write() is usually called for system objects, such
* as llog or last_rcvd files. We needn't enforce quota on those
* objects, so always set the lqi_space as 0. */
RETURN(osd_declare_quota(env, osd, obj->oo_attr.la_uid,
obj->oo_attr.la_gid, 0, oh, true, NULL,
false));
}
static ssize_t osd_declare_write(const struct lu_env *env, struct dt_object *dt,
const loff_t size, loff_t pos,
struct thandle *th)
{
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t oid;
ENTRY;
oh = container_of0(th, struct osd_thandle, ot_super);
/* in some cases declare can race with creation (e.g. llog)
* and we need to wait till object is initialized. notice
* LOHA_EXISTs is supposed to be the last step in the
* initialization */
/* declare possible size change. notice we can't check
* current size here as another thread can change it */
if (dt_object_exists(dt)) {
LASSERT(obj->oo_db);
oid = obj->oo_db->db_object;
dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
} else {
oid = DMU_NEW_OBJECT;
dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
}
dmu_tx_hold_write(oh->ot_tx, oid, pos, size);
/* dt_declare_write() is usually called for system objects, such
* as llog or last_rcvd files. We needn't enforce quota on those
* objects, so always set the lqi_space as 0. */
RETURN(osd_declare_quota(env, osd, obj->oo_attr.la_uid,
obj->oo_attr.la_gid, 0, oh, true, NULL,
false));
}
static int osd_declare_object_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct dt_object_format *dof,
struct thandle *handle)
{
char *buf = osd_oti_get(env)->oti_str;
const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t zapid;
int rc;
ENTRY;
LASSERT(dof);
switch (dof->dof_type) {
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
if (obj->oo_dt.do_body_ops == NULL)
obj->oo_dt.do_body_ops = &osd_body_ops;
break;
default:
break;
}
LASSERT(handle != NULL);
oh = container_of0(handle, struct osd_thandle, ot_super);
LASSERT(oh->ot_tx != NULL);
switch (dof->dof_type) {
case DFT_DIR:
case DFT_INDEX:
/* for zap create */
dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
break;
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
/* first, we'll create new object */
dmu_tx_hold_bonus(oh->ot_tx, DMU_NEW_OBJECT);
break;
default:
LBUG();
break;
}
/* and we'll add it to some mapping */
zapid = osd_get_name_n_idx(env, osd, fid, buf);
dmu_tx_hold_bonus(oh->ot_tx, zapid);
dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, buf);
/* we will also update inode accounting ZAPs */
dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, TRUE, buf);
dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, TRUE, buf);
dmu_tx_hold_sa_create(oh->ot_tx, ZFS_SA_BASE_ATTR_SIZE);
__osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
XATTR_NAME_LMA, oh);
rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
false, NULL, false);
RETURN(rc);
}
static int osd_declare_object_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct dt_object_format *dof,
struct thandle *handle)
{
const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
struct osd_object *obj = osd_dt_obj(dt);
struct osd_device *osd = osd_obj2dev(obj);
struct osd_thandle *oh;
uint64_t zapid;
int rc, dnode_size;
ENTRY;
LASSERT(dof);
switch (dof->dof_type) {
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
if (obj->oo_dt.do_body_ops == NULL)
obj->oo_dt.do_body_ops = &osd_body_ops;
break;
default:
break;
}
LASSERT(handle != NULL);
oh = container_of0(handle, struct osd_thandle, ot_super);
LASSERT(oh->ot_tx != NULL);
/* this is the minimum set of EAs on every Lustre object */
obj->oo_ea_in_bonus = ZFS_SA_BASE_ATTR_SIZE +
sizeof(__u64) + /* VBR VERSION */
sizeof(struct lustre_mdt_attrs); /* LMA */
/* reserve 32 bytes for extra stuff like ACLs */
dnode_size = size_roundup_power2(obj->oo_ea_in_bonus + 32);
switch (dof->dof_type) {
case DFT_DIR:
dt->do_index_ops = &osd_dir_ops;
case DFT_INDEX:
/* for zap create */
dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, FALSE, NULL);
dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
break;
case DFT_REGULAR:
case DFT_SYM:
case DFT_NODE:
/* first, we'll create new object */
dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
break;
default:
LBUG();
break;
}
/* and we'll add it to some mapping */
zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0);
dmu_tx_hold_zap(oh->ot_tx, zapid, TRUE, NULL);
/* we will also update inode accounting ZAPs */
dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, FALSE, NULL);
dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, FALSE, NULL);
rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
false, NULL, false);
RETURN(rc);
}