vitastor/src/nfs/rpc.x

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/* Based on RFC 5531 - RPC: Remote Procedure Call Protocol Specification Version 2 */
const RPC_MSG_VERSION = 2;
enum rpc_auth_flavor {
RPC_AUTH_NONE = 0,
RPC_AUTH_SYS = 1,
RPC_AUTH_SHORT = 2,
RPC_AUTH_DH = 3,
RPC_RPCSEC_GSS = 6
};
enum rpc_msg_type {
RPC_CALL = 0,
RPC_REPLY = 1
};
enum rpc_reply_stat {
RPC_MSG_ACCEPTED = 0,
RPC_MSG_DENIED = 1
};
enum rpc_accept_stat {
RPC_SUCCESS = 0,
RPC_PROG_UNAVAIL = 1,
RPC_PROG_MISMATCH = 2,
RPC_PROC_UNAVAIL = 3,
RPC_GARBAGE_ARGS = 4,
RPC_SYSTEM_ERR = 5
};
enum rpc_reject_stat {
RPC_MISMATCH = 0,
RPC_AUTH_ERROR = 1
};
enum rpc_auth_stat {
RPC_AUTH_OK = 0,
/*
* failed at remote end
*/
RPC_AUTH_BADCRED = 1, /* bogus credentials (seal broken) */
RPC_AUTH_REJECTEDCRED = 2, /* client should begin new session */
RPC_AUTH_BADVERF = 3, /* bogus verifier (seal broken) */
RPC_AUTH_REJECTEDVERF = 4, /* verifier expired or was replayed */
RPC_AUTH_TOOWEAK = 5, /* rejected due to security reasons */
/*
* failed locally
*/
RPC_AUTH_INVALIDRESP = 6, /* bogus response verifier */
RPC_AUTH_FAILED = 7 /* some unknown reason */
};
struct rpc_opaque_auth {
rpc_auth_flavor flavor;
opaque body<400>;
};
struct rpc_call_body {
u_int rpcvers;
u_int prog;
u_int vers;
u_int proc;
rpc_opaque_auth cred;
rpc_opaque_auth verf;
/* procedure-specific parameters start here */
};
struct rpc_mismatch_info {
unsigned int min_version;
unsigned int max_version;
};
union rpc_accepted_reply_body switch (rpc_accept_stat stat) {
case RPC_SUCCESS:
void;
/* procedure-specific results start here */
case RPC_PROG_MISMATCH:
rpc_mismatch_info mismatch_info;
default:
void;
};
struct rpc_accepted_reply {
rpc_opaque_auth verf;
rpc_accepted_reply_body reply_data;
};
union rpc_rejected_reply switch (rpc_reject_stat stat) {
case RPC_MISMATCH:
rpc_mismatch_info mismatch_info;
case RPC_AUTH_ERROR:
rpc_auth_stat auth_stat;
};
union rpc_reply_body switch (rpc_reply_stat stat) {
case RPC_MSG_ACCEPTED:
rpc_accepted_reply areply;
case RPC_MSG_DENIED:
rpc_rejected_reply rreply;
};
union rpc_msg_body switch (rpc_msg_type dir) {
case RPC_CALL:
rpc_call_body cbody;
case RPC_REPLY:
rpc_reply_body rbody;
};
struct rpc_msg {
u_int xid;
rpc_msg_body body;
};