8360efbd6c
associated changes that had to happen to make this possible as well as
bugs fixed along the way.
Bring in required TLI library routines to support this.
Since we don't support TLI we've essentially copied what NetBSD
has done, adding a thin layer to emulate direct the TLI calls
into BSD socket calls.
This is mostly from Sun's tirpc release that was made in 1994,
however some fixes were backported from the 1999 release (supposedly
only made available after this porting effort was underway).
The submitter has agreed to continue on and bring us up to the
1999 release.
Several key features are introduced with this update:
Client calls are thread safe. (1999 code has server side thread
safe)
Updated, a more modern interface.
Many userland updates were done to bring the code up to par with
the recent RPC API.
There is an update to the pthreads library, a function
pthread_main_np() was added to emulate a function of Sun's threads
library.
While we're at it, bring in NetBSD's lockd, it's been far too
long of a wait.
New rpcbind(8) replaces portmap(8) (supporting communication over
an authenticated Unix-domain socket, and by default only allowing
set and unset requests over that channel). It's much more secure
than the old portmapper.
Umount(8), mountd(8), mount_nfs(8), nfsd(8) have also been upgraded
to support TI-RPC and to support IPV6.
Umount(8) is also fixed to unmount pathnames longer than 80 chars,
which are currently truncated by the Kernel statfs structure.
Submitted by: Martin Blapp <mb@imp.ch>
Manpage review: ru
Secure RPC implemented by: wpaul
264 lines
6.6 KiB
Groff
264 lines
6.6 KiB
Groff
.\" @(#)rpc_svc_calls.3n 1.28 93/05/10 SMI; from SVr4
|
|
.\" Copyright 1989 AT&T
|
|
.\" @(#)rpc_svc_calls 1.5 89/07/25 SMI;
|
|
.\" Copyright (c) 1988 Sun Microsystems, Inc. - All Rights Reserved.
|
|
.\" $NetBSD: rpc_svc_calls.3,v 1.1 2000/06/02 23:11:13 fvdl Exp $
|
|
.\" $FreeBSD$
|
|
.Dd May 3, 1993
|
|
.Dt RPC_SVC_CALLS 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm svc_dg_enablecache ,
|
|
.Nm svc_exit ,
|
|
.Nm svc_fdset ,
|
|
.Nm svc_freeargs ,
|
|
.Nm svc_getargs ,
|
|
.Nm svc_getreq_common ,
|
|
.Nm svc_getreq_poll ,
|
|
.Nm svc_getreqset ,
|
|
.Nm svc_getrpccaller ,
|
|
.Nm svc_pollset ,
|
|
.Nm svc_run ,
|
|
.Nm svc_sendreply
|
|
.Nd library routines for RPC servers
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.Fd #include <rpc/rpc.h>
|
|
.Ft int
|
|
.Fn svc_dg_enablecache "SVCXPRT *xprt" "const unsigned cache_size"
|
|
.Ft void
|
|
.Fn svc_exit "void"
|
|
.Ft bool_t
|
|
.Fn svc_freeargs "const SVCXPRT *xprt" "const xdrproc_t inproc" "caddr_t in"
|
|
.Ft bool_t
|
|
.Fn svc_getargs "const SVCXPRT *xprt" "const xdrproc_t inproc" "caddr_t in"
|
|
.Ft void
|
|
.Fn svc_getreq_common "const int fd"
|
|
.Ft void
|
|
.Fn svc_getreq_poll "struct pollfd *pfdp" "const int pollretval"
|
|
.Ft void
|
|
.Fn svc_getreqset "fd_set * rdfds"
|
|
.Ft "struct netbuf *"
|
|
.Fn svc_getrpccaller "const SVCXPRT *xprt"
|
|
.Ft "struct cmsgcred *"
|
|
.Fn __svc_getcallercreds "const SVCXPRT *xprt"
|
|
.Vt struct pollfd svc_pollset[FD_SETSIZE];
|
|
.Ft void
|
|
.Fn svc_run "void"
|
|
.Ft bool_t
|
|
.Fn svc_sendreply "const SVCXPRT *xprt" "const xdrproc_t outproc" "const caddr_t *out"
|
|
.Sh DESCRIPTION
|
|
These routines are part of the
|
|
RPC
|
|
library which allows C language programs to make procedure
|
|
calls on other machines across the network.
|
|
.Pp
|
|
These routines are associated with the server side of the
|
|
RPC mechanism.
|
|
Some of them are called by the server side dispatch function,
|
|
while others
|
|
(such as
|
|
.Fn svc_run )
|
|
are called when the server is initiated.
|
|
.\" .Pp
|
|
.\" In the current implementation, the service transport handle,
|
|
.\" .Dv SVCXPRT ,
|
|
.\" contains a single data area for decoding arguments and encoding results.
|
|
.\" Therefore, this structure cannot be freely shared between threads that call
|
|
.\" functions that do this.
|
|
.\" Routines on this page that are affected by this
|
|
.\" restriction are marked as unsafe for MT applications.
|
|
.Sh Routines
|
|
See
|
|
.Xr rpc 3
|
|
for the definition of the
|
|
.Vt SVCXPRT
|
|
data structure.
|
|
.Bl -tag -width __svc_getcallercreds()
|
|
.It Fn svc_dg_enablecache
|
|
This function allocates a duplicate request cache for the
|
|
service endpoint
|
|
.Fa xprt ,
|
|
large enough to hold
|
|
.Fa cache_size
|
|
entries.
|
|
Once enabled, there is no way to disable caching.
|
|
This routine returns 0 if space necessary for a cache of the given size
|
|
was successfully allocated, and 1 otherwise.
|
|
.It Fn svc_exit
|
|
This function, when called by any of the RPC server procedure or
|
|
otherwise, causes
|
|
.Fn svc_run
|
|
to return.
|
|
.Pp
|
|
As currently implemented,
|
|
.Fn svc_exit
|
|
zeroes the
|
|
.Va svc_fdset
|
|
global variable.
|
|
If RPC server activity is to be resumed,
|
|
services must be reregistered with the RPC library
|
|
either through one of the
|
|
.Fn rpc_svc_create
|
|
functions, or using
|
|
.Fn xprt_register .
|
|
.Fn svc_exit
|
|
has global scope and ends all RPC server activity.
|
|
.It Xo
|
|
.Vt fd_set Va svc_fdset
|
|
.Xc
|
|
A global variable reflecting the
|
|
RPC server's read file descriptor bit mask; it is suitable as a parameter
|
|
to the
|
|
.Xr select 2
|
|
system call.
|
|
This is only of interest
|
|
if service implementors do not call
|
|
.Fn svc_run ,
|
|
but rather do their own asynchronous event processing.
|
|
This variable is read-only (do not pass its address to
|
|
.Xr select 2 ! ) ,
|
|
yet it may change after calls to
|
|
.Fn svc_getreqset
|
|
or any creation routines.
|
|
.It Fn svc_freeargs
|
|
A function macro that frees any data allocated by the
|
|
RPC/XDR system when it decoded the arguments to a service procedure
|
|
using
|
|
.Fn svc_getargs .
|
|
This routine returns
|
|
.Dv TRUE
|
|
if the results were successfully
|
|
freed, and
|
|
.Dv FALSE
|
|
otherwise.
|
|
.It Fn svc_getargs
|
|
A function macro that decodes the arguments of an
|
|
RPC request associated with the RPC
|
|
service transport handle
|
|
.Fa xprt .
|
|
The parameter
|
|
.Fa in
|
|
is the address where the arguments will be placed;
|
|
.Fa inproc
|
|
is the XDR
|
|
routine used to decode the arguments.
|
|
This routine returns
|
|
.Dv TRUE
|
|
if decoding succeeds, and
|
|
.Dv FALSE
|
|
otherwise.
|
|
.It Fn svc_getreq_common
|
|
This routine is called to handle a request on the given
|
|
file descriptor.
|
|
.It Fn svc_getreq_poll
|
|
This routine is only of interest if a service implementor
|
|
does not call
|
|
.Fn svc_run ,
|
|
but instead implements custom asynchronous event processing.
|
|
It is called when
|
|
.Xr poll 2
|
|
has determined that an RPC request has arrived on some RPC
|
|
file descriptors;
|
|
.Fa pollretval
|
|
is the return value from
|
|
.Xr poll 2
|
|
and
|
|
.Fa pfdp
|
|
is the array of
|
|
.Vt pollfd
|
|
structures on which the
|
|
.Xr poll 2
|
|
was done.
|
|
It is assumed to be an array large enough to
|
|
contain the maximal number of descriptors allowed.
|
|
.It Fn svc_getreqset
|
|
This routine is only of interest if a service implementor
|
|
does not call
|
|
.Fn svc_run ,
|
|
but instead implements custom asynchronous event processing.
|
|
It is called when
|
|
.Xr poll 2
|
|
has determined that an RPC
|
|
request has arrived on some RPC file descriptors;
|
|
.Fa rdfds
|
|
is the resultant read file descriptor bit mask.
|
|
The routine returns when all file descriptors
|
|
associated with the value of
|
|
.Fa rdfds
|
|
have been serviced.
|
|
.It Fn svc_getrpccaller
|
|
The approved way of getting the network address of the caller
|
|
of a procedure associated with the
|
|
RPC service transport handle
|
|
.Fa xprt .
|
|
.It Fn __svc_getcallercreds
|
|
.Em Warning :
|
|
this macro is specific to
|
|
.Fx
|
|
and thus not portable.
|
|
This macro returns a pointer to a
|
|
.Vt cmsgcred
|
|
structure, defined in
|
|
.Aq Pa sys/socket.h ,
|
|
identifying the calling client.
|
|
This only works if the client is
|
|
calling the server over an
|
|
.Dv AF_LOCAL
|
|
socket.
|
|
.It Xo
|
|
.Vt struct pollfd Va svc_pollset[FD_SETSIZE] ;
|
|
.Xc
|
|
.Va svc_pollset
|
|
is an array of
|
|
.Vt pollfd
|
|
structures derived from
|
|
.Va svc_fdset[] .
|
|
It is suitable as a parameter to the
|
|
.Xr poll 2
|
|
system call.
|
|
The derivation of
|
|
.Va svc_pollset
|
|
from
|
|
.Va svc_fdset
|
|
is made in the current implementation in
|
|
.Fn svc_run .
|
|
Service implementors who do not call
|
|
.Fn svc_run
|
|
and who wish to use this array must perform this derivation themselves.
|
|
.It Fn svc_run
|
|
This routine never returns.
|
|
It waits for RPC
|
|
requests to arrive, and calls the appropriate service
|
|
procedure using
|
|
.Fn svc_getreq_poll
|
|
when one arrives.
|
|
This procedure is usually waiting for the
|
|
.Xr poll 2
|
|
system call to return.
|
|
.It Fn svc_sendreply
|
|
Called by an RPC service's dispatch routine to send the results of a
|
|
remote procedure call.
|
|
The parameter
|
|
.Fa xprt
|
|
is the request's associated transport handle;
|
|
.Fa outproc
|
|
is the XDR
|
|
routine which is used to encode the results; and
|
|
.Fa out
|
|
is the address of the results.
|
|
This routine returns
|
|
.Dv TRUE
|
|
if it succeeds,
|
|
.Dv FALSE
|
|
otherwise.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr poll 2 ,
|
|
.Xr select 2 ,
|
|
.Xr rpc 3 ,
|
|
.Xr rpc_svc_create 3 ,
|
|
.Xr rpc_svc_err 3 ,
|
|
.Xr rpc_svc_reg 3
|