minix/lib/libc/rpc/rpc_svc_reg.3
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

196 lines
4.6 KiB
Groff

.\" @(#)rpc_svc_reg.3n 1.32 93/08/31 SMI; from SVr4
.\" Copyright 1989 AT&T
.\" @(#)rpc_svc_call 1.6 89/07/20 SMI;
.\" Copyright (c) 1988 Sun Microsystems, Inc. - All Rights Reserved.
.\" $NetBSD: rpc_svc_reg.3,v 1.9 2009/03/11 13:36:01 joerg Exp $
.Dd May 3, 1993
.Dt RPC_SVC_REG 3
.Os
.Sh NAME
.Nm rpc_svc_reg ,
.Nm rpc_reg ,
.Nm svc_reg ,
.Nm svc_unreg ,
.Nm svc_auth_reg ,
.Nm xprt_register ,
.Nm xprt_unregister
.Nd library routines for registering servers
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In rpc/rpc.h
.Ft bool_t
.Fn 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"
.Ft int
.Fn svc_reg "const SVCXPRT *xprt" "const rpcprog_t prognum" "const rpcvers_t versnum" "const void (*dispatch(struct svc_req *, SVCXPRT *)" "const struct netconfig *netconf"
.Ft void
.Fn svc_unreg "const rpcprog_t prognum" "const rpcvers_t versnum"
.Ft int
.Fn svc_auth_reg "const int cred_flavor" "const enum auth_stat (*handler(struct svc_req *, struct rpc_msg *))"
.Ft void
.Fn xprt_register "const SVCXPRT *xprt"
.Ft void
.Fn xprt_unregister "const SVCXPRT *xprt"
.Sh DESCRIPTION
These routines are a part of the RPC
library which allows the RPC
servers to register themselves with rpcbind
(see
.Xr 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 routine with the appropriate arguments.
.Sh ROUTINES
See
.Xr rpc 3
for the definition of the
.Vt SVCXPRT
data structure.
.Pp
.Bl -tag -width XXXXX
.It Fn rpc_reg
Register program
.Fa prognum ,
procedure
.Fa procname ,
and version
.Fa versnum
with the RPC
service package.
If a request arrives for program
.Fa prognum ,
version
.Fa versnum ,
and procedure
.Fa procnum ,
.Fa procname
is called with a pointer to its parameter(s);
.Fa procname
should return a pointer to its static result(s);
.Fa inproc
is the XDR function used to decode the parameters while
.Fa outproc
is the XDR function used to encode the results.
Procedures are registered on all available transports of the class
.Fa nettype .
See
.Xr rpc 3 .
This routine returns 0 if the registration succeeded,
-1 otherwise.
.Pp
.It Fn svc_reg
Associates
.Fa prognum
and
.Fa versnum
with the service dispatch procedure,
.Fa dispatch .
If
.Fa netconf
is
.Dv NULL ,
the service is not registered with the
.Xr rpcbind 8
service.
If
.Fa netconf
is non-zero,
then a mapping of the triple
[
.Fa prognum ,
.Fa versnum ,
.Fa netconf-\*[Gt]nc_netid ]
to
.Fa xprt-\*[Gt]xp_ltaddr
is established with the local rpcbind
service.
.Pp
The
.Fn svc_reg
routine returns 1 if it succeeds,
and 0 otherwise.
.Pp
.It Fn svc_unreg
Remove from the rpcbind
service, all mappings of the triple
[
.Fa prognum ,
.Fa versnum ,
all-transports ]
to network address
and all mappings within the RPC service package
of the double
[
.Fa prognum ,
.Fa versnum ]
to dispatch routines.
.Pp
.It Fn svc_auth_reg
Registers the service authentication routine
.Fa handler
with the dispatch mechanism so that it can be
invoked to authenticate RPC requests received
with authentication type
.Fa cred_flavor .
This interface 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.
.Pp
Typical service application would call
.Fn svc_auth_reg
after registering the service and prior to calling
.Fn svc_run .
When needed to process an RPC credential of type
.Fa cred_flavor ,
the
.Fa handler
procedure will be called with two parameters
.Fa "struct svc_req *rqst" ,
and
.Fa "struct rpc_msg * msg" ,
and is expected to return a valid
.Vt "enum auth_stat"
value.
There is no provision to change or delete an authentication handler
once registered.
.Pp
The
.Fn svc_auth_reg
routine returns 0 if the registration is successful,
1 if
.Fa cred_flavor
already has an authentication handler registered for it,
and -1 otherwise.
.Pp
.It Fn xprt_register
After RPC service transport handle
.Fa xprt
is created, it is registered with the RPC
service package.
This routine modifies the global variable
.Va svc_fdset
(see
.Xr rpc_svc_calls 3 ) .
Service implementors usually do not need this routine.
.Pp
.It Fn xprt_unregister
Before an RPC service transport handle
.Fa xprt
is destroyed, it unregisters itself with the
RPC service package.
This routine modifies the global variable
.Va svc_fdset
(see
.Xr rpc_svc_calls 3 ) .
Service implementors usually do not need this routine.
.El
.Sh SEE ALSO
.Xr select 2 ,
.Xr rpc 3 ,
.Xr rpc_svc_calls 3 ,
.Xr rpc_svc_create 3 ,
.Xr rpc_svc_err 3 ,
.Xr rpcbind 3 ,
.Xr rpcbind 8