rpc_svc_reg(3) - NetBSD Manual Pages

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RPC_SVC_REG(3)            NetBSD Programmer's Manual            RPC_SVC_REG(3)


NAME

     rpc_svc_reg, rpc_reg, svc_reg, svc_unreg, svc_auth_reg, xprt_register,
     xprt_unregister - library routines for registering servers


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <rpc/rpc.h>

     bool_t
     rpc_reg(const rpcprog_t prognum, const rpcvers_t versnum,
             const rpcproc_t procnum, const char *(*procname)(),
             const xdrproc_t inproc, const xdrproc_t outproc,
             const char *nettype);

     int
     svc_reg(const SVCXPRT *xprt, const rpcprog_t prognum,
             const rpcvers_t versnum,
             const void (*dispatch(struct svc_req *, SVCXPRT *),
             const struct netconfig *netconf);

     void
     svc_unreg(const rpcprog_t prognum, const rpcvers_t versnum);

     int
     svc_auth_reg(const int cred_flavor,
             const enum auth_stat (*handler(struct svc_req *, truct rpc_msg *)));

     void
     xprt_register(const SVCXPRT *xprt);

     void
     xprt_unregister(const SVCXPRT *xprt);


DESCRIPTION

     These routines are a part of the RPC library which allows the RPC servers
     to register themselves with rpcbind (see rpcbind(8)), and associate the
     given program and version number with the dispatch function.  When the
     RPC server receives a RPC request, the library invokes the dispatch rou-
     tine with the appropriate arguments.

Routines
     See rpc(3) for the definition of the SVCXPRT
     data structure.

     rpc_reg()
            Register program prognum, procedure procname, and version versnum
            with the RPC service package.  If a request arrives for program
            prognum, version versnum, and procedure procnum, procname is
            called with a pointer to its parameter(s); procname should return
            a pointer to its static result(s); inproc is the XDR function used
            to decode the parameters while outproc is the XDR function used to
            encode the results.  Procedures are registered on all available
            transports of the class nettype.  See rpc(3).  This routine re-
            turns 0 if the registration succeeded, -1 otherwise.

     svc_reg()
            Associates prognum and versnum with the service dispatch proce-
            dure, dispatch.  If netconf is NULL, the service is not registered
            with the rpcbind(8) service.  If netconf is non-zero, then a map-
            ping of the triple [ prognum, versnum, netconf->nc_netid] to
            xprt->xp_ltaddr is established with the local rpcbind service.

            The svc_reg() routine returns 1 if it succeeds, and 0 otherwise.

     svc_unreg()
            Remove from the rpcbind service, all mappings of the triple [
            prognum, versnum, all-transports ] to network address and all map-
            pings within the RPC service package of the double [ prognum,
            versnum] to dispatch routines.

     svc_auth_reg()
            Registers the service authentication routine handler with the dis-
            patch mechanism so that it can be invoked to authenticate RPC re-
            quests received with authentication type cred_flavor.  This inter-
            face allows developers to add new authentication types to their
            RPC applications without needing to modify the libraries.  Service
            implementors usually do not need this routine.

            Typical service application would call svc_auth_reg() after regis-
            tering the service and prior to calling svc_run().  When needed to
            process an RPC credential of type cred_flavor, the handler proce-
            dure will be called with two parameters struct svc_req *rqst, and
            struct rpc_msg * msg, and is expected to return a valid enum
            auth_stat
            value.  There is no provision to change or delete an authentica-
            tion handler once registered.

            The svc_auth_reg() routine returns 0 if the registration is suc-
            cessful, 1 if cred_flavor already has an authentication handler
            registered for it, and -1 otherwise.

     xprt_register()
            After RPC service transport handle xprt is created, it is regis-
            tered with the RPC service package.  This routine modifies the
            global variable svc_fdset (see rpc_svc_calls(3)).  Service imple-
            mentors usually do not need this routine.

     xprt_unregister()
            Before an RPC service transport handle xprt is destroyed, it un-
            registers itself with the RPC service package.  This routine modi-
            fies the global variable svc_fdset (see rpc_svc_calls(3)).  Ser-
            vice implementors usually do not need this routine.


SEE ALSO

     select(2), rpc(3), rpc_svc_calls(3), rpc_svc_create(3), rpc_svc_err(3),
     rpcbind(3), rpcbind(8)

                                  May 3, 1993                                2