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184 lines
4.6 KiB
Plaintext
184 lines
4.6 KiB
Plaintext
.\" @(#)rpc_svc_reg.3n 1.32 93/08/31 SMI; from SVr4
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.\" Copyright 1989 AT&T
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.\" @(#)rpc_svc_call 1.6 89/07/20 SMI;
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.\" Copyright (c) 1988 Sun Microsystems, Inc. - All Rights Reserved.
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.\" $NetBSD: rpc_svc_reg.3,v 1.1 2000/06/02 23:11:14 fvdl Exp $
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.\" $FreeBSD: src/lib/libc/rpc/rpc_svc_reg.3,v 1.5 2002/12/19 09:40:23 ru Exp $
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.Dd May 3, 1993
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.Dt RPC_SVC_REG 3
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.Os
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.Sh NAME
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.Nm rpc_svc_reg ,
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.Nm rpc_reg ,
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.Nm svc_reg ,
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.Nm svc_unreg ,
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.Nm svc_auth_reg ,
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.Nm xprt_register ,
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.Nm xprt_unregister
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.Nd library routines for registering servers
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In rpc/rpc.h
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.Ft int
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.Fn rpc_reg "rpcprog_t prognum" "rpcvers_t versnum" "rpcproc_t procnum" "char *(*procname)()" "xdrproc_t inproc" "xdrproc_t outproc" "char *nettype"
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.Ft bool_t
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.Fn svc_reg "SVCXPRT *xprt" "const rpcprog_t prognum" "const rpcvers_t versnum" "void (*dispatch)(struct svc_req *, SVCXPRT *)" "const struct netconfig *netconf"
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.Ft void
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.Fn svc_unreg "const rpcprog_t prognum" "const rpcvers_t versnum"
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.Ft int
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.Fn svc_auth_reg "int cred_flavor" "enum auth_stat (*handler)(struct svc_req *, struct rpc_msg *)"
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.Ft void
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.Fn xprt_register "SVCXPRT *xprt"
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.Ft void
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.Fn xprt_unregister "SVCXPRT *xprt"
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.Sh DESCRIPTION
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These routines are a part of the RPC
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library which allows the RPC
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servers to register themselves with rpcbind
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(see
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.Xr rpcbind 8 ) ,
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and associate the given program and version
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number with the dispatch function.
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When the RPC server receives a RPC request, the library invokes the
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dispatch routine with the appropriate arguments.
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.Sh Routines
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See
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.Xr rpc 3
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for the definition of the
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.Vt SVCXPRT
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data structure.
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.Bl -tag -width XXXXX
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.It Fn rpc_reg
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Register program
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.Fa prognum ,
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procedure
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.Fa procname ,
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and version
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.Fa versnum
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with the RPC
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service package.
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If a request arrives for program
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.Fa prognum ,
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version
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.Fa versnum ,
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and procedure
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.Fa procnum ,
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.Fa procname
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is called with a pointer to its argument(s);
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.Fa procname
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should return a pointer to its static result(s);
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.Fa inproc
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is the XDR function used to decode the arguments while
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.Fa outproc
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is the XDR function used to encode the results.
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Procedures are registered on all available transports of the class
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.Fa nettype .
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See
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.Xr rpc 3 .
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This routine returns 0 if the registration succeeded,
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\-1 otherwise.
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.It Fn svc_reg
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Associates
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.Fa prognum
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and
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.Fa versnum
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with the service dispatch procedure,
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.Fa dispatch .
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If
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.Fa netconf
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is
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.Dv NULL ,
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the service is not registered with the
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.Xr rpcbind 8
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service.
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If
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.Fa netconf
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is non-zero,
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then a mapping of the triple
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.Bq Fa prognum , versnum , netconf->nc_netid
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to
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.Fa xprt->xp_ltaddr
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is established with the local rpcbind
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service.
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.Pp
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The
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.Fn svc_reg
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routine returns 1 if it succeeds,
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and 0 otherwise.
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.It Fn svc_unreg
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Remove from the rpcbind
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service, all mappings of the triple
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.Bq Fa prognum , versnum , No all-transports
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to network address
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and all mappings within the RPC service package
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of the double
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.Bq Fa prognum , versnum
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to dispatch routines.
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.It Fn svc_auth_reg
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Registers the service authentication routine
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.Fa handler
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with the dispatch mechanism so that it can be
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invoked to authenticate RPC requests received
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with authentication type
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.Fa cred_flavor .
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This interface allows developers to add new authentication
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types to their RPC applications without needing to modify
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the libraries.
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Service implementors usually do not need this routine.
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.Pp
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Typical service application would call
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.Fn svc_auth_reg
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after registering the service and prior to calling
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.Fn svc_run .
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When needed to process an RPC credential of type
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.Fa cred_flavor ,
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the
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.Fa handler
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procedure will be called with two arguments,
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.Fa "struct svc_req *rqst"
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and
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.Fa "struct rpc_msg *msg" ,
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and is expected to return a valid
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.Vt "enum auth_stat"
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value.
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There is no provision to change or delete an authentication handler
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once registered.
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.Pp
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The
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.Fn svc_auth_reg
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routine returns 0 if the registration is successful,
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1 if
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.Fa cred_flavor
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already has an authentication handler registered for it,
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and \-1 otherwise.
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.It Fn xprt_register
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After RPC service transport handle
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.Fa xprt
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is created, it is registered with the RPC
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service package.
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This routine modifies the global variable
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.Va svc_fdset
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(see
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.Xr rpc_svc_calls 3 ) .
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Service implementors usually do not need this routine.
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.It Fn xprt_unregister
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Before an RPC service transport handle
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.Fa xprt
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is destroyed, it unregisters itself with the
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RPC service package.
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This routine modifies the global variable
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.Va svc_fdset
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(see
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.Xr rpc_svc_calls 3 ) .
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Service implementors usually do not need this routine.
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.El
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.Sh SEE ALSO
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.Xr select 2 ,
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.Xr rpc 3 ,
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.Xr rpcbind 3 ,
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.Xr rpc_svc_calls 3 ,
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.Xr rpc_svc_create 3 ,
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.Xr rpc_svc_err 3 ,
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.Xr rpcbind 8
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