Esempio n. 1
0
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;
}
Esempio n. 2
0
File: zfs_sa.c Progetto: Alyseo/zfs
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);
}
Esempio n. 3
0
/*
 * 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;
}
Esempio n. 4
0
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;
}
Esempio n. 5
0
/*
 * 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;
}
Esempio n. 6
0
/** 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;
}