int __osd_xattr_load(struct osd_device *osd, uint64_t dnode, nvlist_t **sa)
{
sa_handle_t *sa_hdl;
char *buf;
int rc, size;
if (unlikely(dnode == ZFS_NO_OBJECT))
return -ENOENT;
rc = -sa_handle_get(osd->od_os, dnode, NULL, SA_HDL_PRIVATE, &sa_hdl);
if (rc)
return rc;
rc = -sa_size(sa_hdl, SA_ZPL_DXATTR(osd), &size);
if (rc) {
if (rc == -ENOENT)
rc = -nvlist_alloc(sa, NV_UNIQUE_NAME, KM_SLEEP);
goto out_sa;
}
buf = osd_zio_buf_alloc(size);
if (buf == NULL) {
rc = -ENOMEM;
goto out_sa;
}
rc = -sa_lookup(sa_hdl, SA_ZPL_DXATTR(osd), buf, size);
if (rc == 0)
rc = -nvlist_unpack(buf, size, sa, KM_SLEEP);
osd_zio_buf_free(buf, size);
out_sa:
sa_handle_destroy(sa_hdl);
return rc;
}
int
zfs_sa_get_xattr(znode_t *zp)
{
zfs_sb_t *zsb = ZTOZSB(zp);
char *obj;
int size;
int error;
ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock));
ASSERT(!zp->z_xattr_cached);
ASSERT(zp->z_is_sa);
error = sa_size(zp->z_sa_hdl, SA_ZPL_DXATTR(zsb), &size);
if (error) {
if (error == ENOENT)
return nvlist_alloc(&zp->z_xattr_cached,
NV_UNIQUE_NAME, KM_SLEEP);
else
return (error);
}
obj = zio_buf_alloc(size);
error = sa_lookup(zp->z_sa_hdl, SA_ZPL_DXATTR(zsb), obj, size);
if (error == 0)
error = nvlist_unpack(obj, size, &zp->z_xattr_cached, KM_SLEEP);
zio_buf_free(obj, size);
return (error);
}
/*
* Copy an extended attribute into the buffer provided, or compute the
* required buffer size.
*
* If buf is NULL, it computes the required buffer size.
*
* Returns 0 on success or a negative error number on failure.
* On success, the number of bytes used / required is stored in 'size'.
*
* No locking is done here.
*/
int __osd_xattr_load(udmu_objset_t *uos, uint64_t dnode, nvlist_t **sa_xattr)
{
sa_handle_t *sa_hdl;
char *buf;
int rc, size;
if (unlikely(dnode == ZFS_NO_OBJECT))
return -ENOENT;
rc = -sa_handle_get(uos->os, dnode, NULL, SA_HDL_PRIVATE, &sa_hdl);
if (rc)
return rc;
rc = -sa_size(sa_hdl, SA_ZPL_DXATTR(uos), &size);
if (rc) {
if (rc == -ENOENT)
rc = -nvlist_alloc(sa_xattr, NV_UNIQUE_NAME, KM_SLEEP);
goto out_sa;
}
buf = sa_spill_alloc(KM_SLEEP);
if (buf == NULL) {
rc = -ENOMEM;
goto out_sa;
}
rc = -sa_lookup(sa_hdl, SA_ZPL_DXATTR(uos), buf, size);
if (rc == 0)
rc = -nvlist_unpack(buf, size, sa_xattr, KM_SLEEP);
sa_spill_free(buf);
out_sa:
sa_handle_destroy(sa_hdl);
return rc;
}
static int
cachable(mvc *m, stmt *s)
{
if (m->emode == m_prepare)
return 1;
if (m->emode == m_plan || m->type == Q_TRANS || /*m->type == Q_SCHEMA || cachable to make sure we have trace on alter statements */
(s && s->type == st_none) || sa_size(m->sa) > MAX_QUERY)
return 0;
return 1;
}
/*
* Copy an extended attribute into the buffer provided, or compute the
* required buffer size.
*
* If buf is NULL, it computes the required buffer size.
*
* Returns 0 on success or a negative error number on failure.
* On success, the number of bytes used / required is stored in 'size'.
*
* No locking is done here.
*/
int __osd_xattr_cache(const struct lu_env *env, struct osd_object *obj)
{
struct osd_device *osd = osd_obj2dev(obj);
udmu_objset_t *uos = &osd->od_objset;
sa_handle_t *sa_hdl;
char *buf;
int size;
int rc;
LASSERT(obj->oo_sa_xattr == NULL);
LASSERT(obj->oo_db != NULL);
rc = -sa_handle_get(uos->os, obj->oo_db->db_object, NULL,
SA_HDL_PRIVATE, &sa_hdl);
if (rc)
return rc;
rc = -sa_size(sa_hdl, SA_ZPL_DXATTR(uos), &size);
if (rc) {
if (rc == -ENOENT)
rc = -nvlist_alloc(&obj->oo_sa_xattr,
NV_UNIQUE_NAME, KM_SLEEP);
goto out_sa;
}
buf = sa_spill_alloc(KM_SLEEP);
if (buf == NULL) {
rc = -ENOMEM;
goto out_sa;
}
rc = -sa_lookup(sa_hdl, SA_ZPL_DXATTR(uos), buf, size);
if (rc == 0)
rc = -nvlist_unpack(buf, size, &obj->oo_sa_xattr, KM_SLEEP);
sa_spill_free(buf);
out_sa:
sa_handle_destroy(sa_hdl);
return rc;
}
/** Send requests we have previously built down the UDP socket */
int DNSRequest::SendRequests(const DNSHeader *header, const int length, QueryType qt)
{
ServerInstance->Logs->Log("RESOLVER", DEBUG,"DNSRequest::SendRequests");
unsigned char payload[sizeof(DNSHeader)];
this->rr_class = 1;
this->type = qt;
DNS::EmptyHeader(payload,header,length);
if (ServerInstance->SE->SendTo(dnsobj, payload, length + 12, 0, &(dnsobj->myserver.sa), sa_size(dnsobj->myserver)) != length+12)
return -1;
ServerInstance->Logs->Log("RESOLVER",DEBUG,"Sent OK");
return 0;
}