diff options
Diffstat (limited to 'msg_socket')
| -rw-r--r-- | msg_socket/src/msg_on_socket.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/msg_socket/src/msg_on_socket.rs b/msg_socket/src/msg_on_socket.rs index c6e4413..493c57c 100644 --- a/msg_socket/src/msg_on_socket.rs +++ b/msg_socket/src/msg_on_socket.rs @@ -4,6 +4,7 @@ use data_model::*; use std; +use std::fmt::{self, Display}; use std::os::unix::io::{AsRawFd, FromRawFd, RawFd}; use std::result; use sys_util::{Error as SysError, EventFd}; @@ -38,6 +39,23 @@ pub enum MsgError { pub type MsgResult<T> = result::Result<T, MsgError>; +impl Display for MsgError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + use self::MsgError::*; + + match self { + Send(e) => write!(f, "failed to send request or response: {}", e), + Recv(e) => write!(f, "failed to receive request or response: {}", e), + InvalidType => write!(f, "invalid type"), + BadRecvSize(n) => write!(f, "wrong amount of data received; expected {} bytes", n), + ExpectFd => write!(f, "missing associated file descriptor for request"), + NotExpectFd => write!(f, "unexpected file descriptor is unused"), + WrongFdBufferSize => write!(f, "fd buffer size too small"), + WrongMsgBufferSize => write!(f, "msg buffer size too small"), + } + } +} + /// A msg that could be serialized to and deserialize from array in little endian. /// /// For structs, we always have fixed size of bytes and fixed count of fds. |