def open( id, path, flags, mode=0660 )
sftp_flags, desired_access = case
when flags & IO::WRONLY != 0 then
[ F_CREATE_TRUNCATE,
ACE::F_WRITE_DATA | ACE::F_WRITE_ATTRIBUTES ]
when flags & IO::RDWR != 0 then
[ F_OPEN_OR_CREATE,
ACE::F_READ_DATA | ACE::F_READ_ATTRIBUTES |
ACE::F_WRITE_DATA | ACE::F_WRITE_ATTRIBUTES ]
when flags & IO::APPEND != 0 then
[ F_OPEN_OR_CREATE | F_APPEND_DATA,
ACE::F_WRITE_DATA | ACE::F_WRITE_ATTRIBUTES |
ACE::F_APPEND_DATA ]
else
[ F_OPEN_EXISTING,
ACE::F_READ_DATA | ACE::F_READ_ATTRIBUTES ]
end
sftp_flags |= F_OPEN_OR_CREATE if flags & IO::CREAT != 0
sftp_flags |= F_TRUNCATE_EXISTING if flags & IO::TRUNC != 0
attributes = @attr_factory.empty
attributes.permissions = mode
open_raw id, path, desired_access, sftp_flags, attributes
end