A path name in the Gfarm filesystem.
GFARM_ACL_TYPE_ACCESS (to set the access ACL) or GFARM_ACL_TYPE_DEFAULT (to set the default ACL).
An ACL structure type which is sorted.
The function terminated successfully.
The argument acl does not point to a valid ACL.
An error except the above occurred. The reason is shown by gfarm_error_string(3).