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"Exclusive connections" are meant to be used for a single client call and then scrapped. The idea is to limit the use of the negotiated security context. The current code, however, isn't doing this: it is instead restricting the socket to a single virtual connection and doing all the calls over that. This is changed such that the socket no longer maintains a special virtual connection over which it will do all the calls, but rather gets a new one each time a new exclusive call is made. Further, using a socket option for this is a poor choice. It should be done on sendmsg with a control message marker instead so that calls can be marked exclusive individually. To that end, add RXRPC_EXCLUSIVE_CALL which, if passed to sendmsg() as a control message element, will cause the call to be done on an single-use connection. The socket option (RXRPC_EXCLUSIVE_CONNECTION) still exists and, if set, will override any lack of RXRPC_EXCLUSIVE_CALL being specified so that programs using the setsockopt() will appear to work the same. Signed-off-by: David Howells <dhowells@redhat.com>
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/* AF_RXRPC parameters
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_RXRPC_H
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#define _LINUX_RXRPC_H
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#include <linux/in.h>
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#include <linux/in6.h>
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/*
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* RxRPC socket address
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*/
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struct sockaddr_rxrpc {
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sa_family_t srx_family; /* address family */
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u16 srx_service; /* service desired */
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u16 transport_type; /* type of transport socket (SOCK_DGRAM) */
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u16 transport_len; /* length of transport address */
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union {
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sa_family_t family; /* transport address family */
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struct sockaddr_in sin; /* IPv4 transport address */
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struct sockaddr_in6 sin6; /* IPv6 transport address */
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} transport;
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};
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/*
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* RxRPC socket options
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*/
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#define RXRPC_SECURITY_KEY 1 /* [clnt] set client security key */
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#define RXRPC_SECURITY_KEYRING 2 /* [srvr] set ring of server security keys */
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#define RXRPC_EXCLUSIVE_CONNECTION 3 /* Deprecated; use RXRPC_EXCLUSIVE_CALL instead */
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#define RXRPC_MIN_SECURITY_LEVEL 4 /* minimum security level */
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/*
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* RxRPC control messages
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* - If neither abort or accept are specified, the message is a data message.
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* - terminal messages mean that a user call ID tag can be recycled
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* - s/r/- indicate whether these are applicable to sendmsg() and/or recvmsg()
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*/
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#define RXRPC_USER_CALL_ID 1 /* sr: user call ID specifier */
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#define RXRPC_ABORT 2 /* sr: abort request / notification [terminal] */
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#define RXRPC_ACK 3 /* -r: [Service] RPC op final ACK received [terminal] */
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#define RXRPC_NET_ERROR 5 /* -r: network error received [terminal] */
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#define RXRPC_BUSY 6 /* -r: server busy received [terminal] */
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#define RXRPC_LOCAL_ERROR 7 /* -r: local error generated [terminal] */
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#define RXRPC_NEW_CALL 8 /* -r: [Service] new incoming call notification */
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#define RXRPC_ACCEPT 9 /* s-: [Service] accept request */
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#define RXRPC_EXCLUSIVE_CALL 10 /* s-: Call should be on exclusive connection */
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/*
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* RxRPC security levels
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*/
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#define RXRPC_SECURITY_PLAIN 0 /* plain secure-checksummed packets only */
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#define RXRPC_SECURITY_AUTH 1 /* authenticated packets */
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#define RXRPC_SECURITY_ENCRYPT 2 /* encrypted packets */
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/*
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* RxRPC security indices
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*/
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#define RXRPC_SECURITY_NONE 0 /* no security protocol */
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#define RXRPC_SECURITY_RXKAD 2 /* kaserver or kerberos 4 */
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#define RXRPC_SECURITY_RXGK 4 /* gssapi-based */
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#define RXRPC_SECURITY_RXK5 5 /* kerberos 5 */
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#endif /* _LINUX_RXRPC_H */
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