C++ (Cpp) zfs_fuid_table_load示例

示例#1

文件： zfs_fuid.c 项目： roddi/maczfs-10a286

/*
 * Load the fuid table(s) into memory.
 */
static void
zfs_fuid_init(zfsvfs_t *zfsvfs, dmu_tx_t *tx)
{
	int error = 0;

	rw_enter(&zfsvfs->z_fuid_lock, RW_WRITER);

	if (zfsvfs->z_fuid_loaded) {
		rw_exit(&zfsvfs->z_fuid_lock);
		return;
	}

	if (zfsvfs->z_fuid_obj == 0) {

		/* first make sure we need to allocate object */

		error = zap_lookup(zfsvfs->z_os, MASTER_NODE_OBJ,
		    ZFS_FUID_TABLES, 8, 1, &zfsvfs->z_fuid_obj);
		if (error == ENOENT && tx != NULL) {
			zfsvfs->z_fuid_obj = dmu_object_alloc(zfsvfs->z_os,
			    DMU_OT_FUID, 1 << 14, DMU_OT_FUID_SIZE,
			    sizeof (uint64_t), tx);
			VERIFY(zap_add(zfsvfs->z_os, MASTER_NODE_OBJ,
			    ZFS_FUID_TABLES, sizeof (uint64_t), 1,
			    &zfsvfs->z_fuid_obj, tx) == 0);
		}
	}

	zfsvfs->z_fuid_size = zfs_fuid_table_load(zfsvfs->z_os,
	    zfsvfs->z_fuid_obj, &zfsvfs->z_fuid_idx, &zfsvfs->z_fuid_domain);

	zfsvfs->z_fuid_loaded = B_TRUE;
	rw_exit(&zfsvfs->z_fuid_lock);
}

示例#2

文件： zfs_fuid.c 项目： glycerine/zfs

/*
 * Load the fuid table(s) into memory.
 */
static void
zfs_fuid_init(zfsvfs_t *zfsvfs)
{
	rw_enter(&zfsvfs->z_fuid_lock, RW_WRITER);

	if (zfsvfs->z_fuid_loaded) {
		rw_exit(&zfsvfs->z_fuid_lock);
		return;
	}

	zfs_fuid_avl_tree_create(&zfsvfs->z_fuid_idx, &zfsvfs->z_fuid_domain);

	(void) zap_lookup(zfsvfs->z_os, MASTER_NODE_OBJ,
	    ZFS_FUID_TABLES, 8, 1, &zfsvfs->z_fuid_obj);
	if (zfsvfs->z_fuid_obj != 0) {
		zfsvfs->z_fuid_size = zfs_fuid_table_load(zfsvfs->z_os,
		    zfsvfs->z_fuid_obj, &zfsvfs->z_fuid_idx,
		    &zfsvfs->z_fuid_domain);
	}

	zfsvfs->z_fuid_loaded = B_TRUE;
	rw_exit(&zfsvfs->z_fuid_lock);
}