b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
316 lines
8.0 KiB
Groff
316 lines
8.0 KiB
Groff
.\" @(#)rpc_svc_create.3n 1.26 93/08/26 SMI; from SVr4
|
|
.\" Copyright 1989 AT&T
|
|
.\" @(#)rpc_svc_create 1.3 89/06/28 SMI;
|
|
.\" Copyright (c) 1988 Sun Microsystems, Inc. - All Rights Reserved.
|
|
.\" $NetBSD: rpc_svc_create.3,v 1.11 2010/03/22 19:30:54 joerg Exp $
|
|
.Dd May 3, 1993
|
|
.Dt RPC_SVC_CREATE 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm rpc_svc_create ,
|
|
.Nm svc_control ,
|
|
.Nm svc_create ,
|
|
.Nm svc_destroy ,
|
|
.Nm svc_dg_create ,
|
|
.Nm svc_fd_create ,
|
|
.Nm svc_raw_create ,
|
|
.Nm svc_tli_create ,
|
|
.Nm svc_tp_create ,
|
|
.Nm svc_vc_create
|
|
.Nd library routines for the creation of server handles
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In rpc/rpc.h
|
|
.Ft bool_t
|
|
.Fn svc_control "SVCXPRT *svc" "const u_int req" "void *info"
|
|
.Ft int
|
|
.Fn svc_create "const void (*dispatch)(struct svc_req *, SVCXPRT *)" "const rpcprog_t prognum" "const rpcvers_t versnum" "const char *nettype"
|
|
.Ft SVCXPRT *"
|
|
.Fn svc_dg_create "const int fildes" "const u_int sendsz" "const u_int recvsz"
|
|
.Ft void
|
|
.Fn svc_destroy "SVCXPRT *xprt"
|
|
.Ft "SVCXPRT *"
|
|
.Fn svc_fd_create "const int fildes" "const u_int sendsz" "const u_int recvsz"
|
|
.Ft "SVCXPRT *"
|
|
.Fn svc_raw_create "void"
|
|
.Ft "SVCXPRT *"
|
|
.Fn svc_tli_create "const int fildes" "const struct netconfig *netconf" "const struct t_bind *bindaddr" "const u_int sendsz" "const u_int recvsz"
|
|
.Ft "SVCXPRT *"
|
|
.Fn svc_tp_create "const void (*dispatch)(const struct svc_reg *, const SVCXPRT *)" "const rpcprog_t prognum" "const rpcvers_t versnum" "const struct netconfig *netconf"
|
|
.Ft "SVCXPRT *"
|
|
.Fn svc_vc_create "const int fildes" "const u_int sendsz" "const u_int recvsz"
|
|
.Sh DESCRIPTION
|
|
These routines are part of the RPC
|
|
library which allows C language programs to make procedure
|
|
calls on servers across the network.
|
|
These routines deal with the creation of service handles.
|
|
Once the handle is created, the server can be invoked by calling
|
|
.Fn svc_run .
|
|
.Sh ROUTINES
|
|
See
|
|
.Xr rpc 3
|
|
for the definition of the
|
|
.Dv SVCXPRT
|
|
data structure.
|
|
.Pp
|
|
.Bl -tag -width XXXXX
|
|
.It Fn svc_control
|
|
A function to change or retrieve various information
|
|
about a service object.
|
|
.Fa req
|
|
indicates the type of operation and
|
|
.Fa info
|
|
is a pointer to the information.
|
|
The supported values of
|
|
.Fa req ,
|
|
their argument types, and what they do are:
|
|
.Bl -tag -width SVCGET_XID
|
|
.It Dv SVCGET_VERSQUIET
|
|
If a request is received for a program number
|
|
served by this server but the version number
|
|
is outside the range registered with the server,
|
|
an
|
|
.Dv RPC_PROGVERSMISMATCH
|
|
error will normally
|
|
be returned.
|
|
.Fa info
|
|
should be a pointer to an integer.
|
|
Upon successful completion of the
|
|
.Dv SVCGET_VERSQUIET
|
|
request,
|
|
.Fa *info
|
|
contains an
|
|
integer which describes the server's current
|
|
behavior: 0 indicates normal server behavior
|
|
(that is, an
|
|
.Dv RPC_PROGVERSMISMATCH
|
|
error
|
|
will be returned); 1 indicates that the out of
|
|
range request will be silently ignored.
|
|
.Pp
|
|
.It Dv SVCSET_VERSQUIET
|
|
If a request is received for a program number
|
|
served by this server but the version number
|
|
is outside the range registered with the server,
|
|
an
|
|
.Dv RPC_PROGVERSMISMATCH
|
|
error will normally be returned.
|
|
It is sometimes desirable to change this behavior.
|
|
.Fa info
|
|
should be a
|
|
pointer to an integer which is either 0
|
|
(indicating normal server behavior - an
|
|
.Dv RPC_PROGVERSMISMATCH
|
|
error will be returned),
|
|
or 1 (indicating that the out of range request
|
|
should be silently ignored).
|
|
.El
|
|
.Pp
|
|
.It Fn svc_create
|
|
.Fn svc_create
|
|
creates server handles for all the transports
|
|
belonging to the class
|
|
.Fa nettype .
|
|
.Fa nettype
|
|
defines a class of transports which can be used
|
|
for a particular application.
|
|
The transports are tried in left to right order in
|
|
.Ev NETPATH
|
|
variable or in top to bottom order in the netconfig database.
|
|
If
|
|
.Fa nettype
|
|
is
|
|
.Dv NULL ,
|
|
it defaults to
|
|
.Dv netpath .
|
|
.Pp
|
|
.Fn svc_create
|
|
registers itself with the rpcbind
|
|
service (see
|
|
.Xr rpcbind 8 ) .
|
|
.Fa dispatch
|
|
is called when there is a remote procedure call for the given
|
|
.Fa prognum
|
|
and
|
|
.Fa versnum ;
|
|
this requires calling
|
|
.Fn svc_run
|
|
(see
|
|
.Fn svc_run
|
|
in
|
|
.Xr rpc_svc_reg 3 ) .
|
|
If
|
|
.Fn svc_create
|
|
succeeds, it returns the number of server
|
|
handles it created,
|
|
otherwise it returns 0 and an error message is logged.
|
|
.Pp
|
|
.It Fn svc_destroy
|
|
A function macro that destroys the RPC
|
|
service handle
|
|
.Fa xprt .
|
|
Destruction usually involves deallocation
|
|
of private data structures,
|
|
including
|
|
.Fa xprt
|
|
itself.
|
|
Use of
|
|
.Fa xprt
|
|
is undefined after calling this routine.
|
|
.Pp
|
|
.It Fn svc_dg_create
|
|
This routine creates a connectionless RPC
|
|
service handle, and returns a pointer to it.
|
|
This routine returns
|
|
.Dv NULL
|
|
if it fails, and an error message is logged.
|
|
.Fa sendsz
|
|
and
|
|
.Fa recvsz
|
|
are parameters used to specify the size of the buffers.
|
|
If they are 0, suitable defaults are chosen.
|
|
The file descriptor
|
|
.Fa fildes
|
|
should be open and bound.
|
|
The server is not registered with
|
|
.Xr rpcbind 8 .
|
|
.Em Warning :
|
|
since connectionless-based RPC
|
|
messages can only hold limited amount of encoded data,
|
|
this transport cannot be used for procedures
|
|
that take large arguments or return huge results.
|
|
.Pp
|
|
.It Fn svc_fd_create
|
|
This routine creates a service on top of an open and bound file descriptor,
|
|
and returns the handle to it.
|
|
Typically, this descriptor is a connected file descriptor for a
|
|
connection-oriented transport.
|
|
.Fa sendsz
|
|
and
|
|
.Fa recvsz
|
|
indicate sizes for the send and receive buffers.
|
|
If they are 0, reasonable defaults are chosen.
|
|
This routine returns
|
|
.Dv NULL
|
|
if it fails, and an error message is logged.
|
|
.Pp
|
|
.It Fn svc_raw_create
|
|
This routine creates an RPC
|
|
service handle and returns a pointer to it.
|
|
The transport is really a buffer within the process's
|
|
address space, so the corresponding RPC
|
|
client should live in the same address space;
|
|
(see
|
|
.Fn clnt_raw_create
|
|
in
|
|
.Xr rpc_clnt_create 3 ) .
|
|
This routine allows simulation of RPC and acquisition of
|
|
RPC overheads (such as round trip times),
|
|
without any kernel and networking interference.
|
|
This routine returns
|
|
.Dv NULL
|
|
if it fails, and an error message is logged.
|
|
.Em Note :
|
|
.Fn svc_run
|
|
should not be called when the raw interface is being used.
|
|
.Pp
|
|
.It Fn svc_tli_create
|
|
This routine creates an RPC
|
|
server handle, and returns a pointer to it.
|
|
.Fa fildes
|
|
is the file descriptor on which the service is listening.
|
|
If
|
|
.Fa fildes
|
|
is
|
|
.Dv RPC_ANYFD ,
|
|
it opens a file descriptor on the transport specified by
|
|
.Fa netconf .
|
|
If the file descriptor is unbound and
|
|
.Fa bindaddr
|
|
is non-null
|
|
.Fa fildes
|
|
is bound to the address specified by
|
|
.Fa bindaddr ,
|
|
otherwise
|
|
.Fa fildes
|
|
is bound to a default address chosen by the transport.
|
|
.Pp
|
|
Note: the
|
|
.Vt t_bind
|
|
structure comes from the TLI/XTI SysV interface, which
|
|
.Nx
|
|
does not use.
|
|
The structure is defined in
|
|
.In rpc/types.h
|
|
for compatibility as:
|
|
.Bd -literal
|
|
struct t_bind {
|
|
struct netbuf addr; /* network address, see rpc(3) */
|
|
unsigned int qlen; /* queue length (for listen(2)) */
|
|
};
|
|
.Ed
|
|
.Pp
|
|
In the case where the default address is chosen,
|
|
the number of outstanding connect requests is set to 8
|
|
for connection-oriented transports.
|
|
The user may specify the size of the send and receive buffers
|
|
with the parameters
|
|
.Fa sendsz
|
|
and
|
|
.Fa recvsz ;
|
|
values of 0 choose suitable defaults.
|
|
This routine returns
|
|
.Dv NULL
|
|
if it fails,
|
|
and an error message is logged.
|
|
The server is not registered with the
|
|
.Xr rpcbind 8
|
|
service.
|
|
.Pp
|
|
.It Fn svc_tp_create
|
|
.Fn svc_tp_create
|
|
creates a server handle for the network
|
|
specified by
|
|
.Fa netconf ,
|
|
and registers itself with the rpcbind service.
|
|
.Fa dispatch
|
|
is called when there is a remote procedure call
|
|
for the given
|
|
.Fa prognum
|
|
and
|
|
.Fa versnum ;
|
|
this requires calling
|
|
.Fn svc_run .
|
|
.Fn svc_tp_create
|
|
returns the service handle if it succeeds,
|
|
otherwise a
|
|
.Dv NULL
|
|
is returned and an error message is logged.
|
|
.Pp
|
|
.It Fn svc_vc_create
|
|
This routine creates a connection-oriented RPC
|
|
service and returns a pointer to it.
|
|
This routine returns
|
|
.Dv NULL
|
|
if it fails, and an error message is logged.
|
|
The users may specify the size of the send and receive buffers
|
|
with the parameters
|
|
.Fa sendsz
|
|
and
|
|
.Fa recvsz ;
|
|
values of 0 choose suitable defaults.
|
|
The file descriptor
|
|
.Fa fildes
|
|
should be open and bound.
|
|
The server is not registered with the
|
|
.Xr rpcbind 8
|
|
service.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr rpc 3 ,
|
|
.Xr rpc_svc_calls 3 ,
|
|
.Xr rpc_svc_err 3 ,
|
|
.Xr rpc_svc_reg 3 ,
|
|
.Xr rpcbind 8
|