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RPC_SVC_CREATE(3)      FreeBSD Library Functions Manual	     RPC_SVC_CREATE(3)

NAME
     rpc_svc_create, svc_control, svc_create, svc_destroy, svc_dg_create,
     svc_fd_create, svc_raw_create, svc_tli_create, svc_tp_create,
     svc_vc_create -- library routines for the creation	of server handles

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <rpc/rpc.h>

     bool_t
     svc_control(SVCXPRT *svc, const u_int req,	void *info);

     int
     svc_create(void (*dispatch)(struct	svc_req	*, SVCXPRT *),
	 const rpcprog_t prognum, const	rpcvers_t versnum,
	 const char *nettype);

     SVCXPRT *
     svc_dg_create(const int fildes, const u_int sendsz, const u_int recvsz);

     void
     svc_destroy(SVCXPRT *xprt);

     SVCXPRT *
     svc_fd_create(const int fildes, const u_int sendsz, const u_int recvsz);

     SVCXPRT *
     svc_raw_create(void);

     SVCXPRT *
     svc_tli_create(const int fildes, const struct netconfig *netconf,
	 const struct t_bind *bindaddr,	const u_int sendsz,
	 const u_int recvsz);

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

     SVCXPRT *
     svc_vc_create(const int fildes, const u_int sendsz, const u_int recvsz);

DESCRIPTION
     These routines are	part of	the RPC	library	which allows C language	pro-
     grams to make procedure calls on servers across the network.  These rou-
     tines deal	with the creation of service handles.  Once the	handle is cre-
     ated, the server can be invoked by	calling	svc_run().

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

     svc_control()
	    A function to change or retrieve various information about a ser-
	    vice object.  The req argument indicates the type of operation and
	    info is a pointer to the information.  The supported values	of
	    req, their argument	types, and what	they do	are:

	    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
			RPC_PROGVERSMISMATCH error will	normally be returned.
			The info argument should be a pointer to an integer.
			Upon successful	completion of the SVCGET_VERSQUIET
			request, *info contains	an integer which describes the
			server's current behavior: 0 indicates normal server
			behavior (that is, an RPC_PROGVERSMISMATCH error will
			be returned); 1	indicates that the out of range
			request	will be	silently ignored.

	    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
			RPC_PROGVERSMISMATCH error will	normally be returned.
			It is sometimes	desirable to change this behavior.
			The info argument should be a pointer to an integer
			which is either	0 (indicating normal server behavior -
			an RPC_PROGVERSMISMATCH	error will be returned), or 1
			(indicating that the out of range request should be
			silently ignored).

     svc_create()
	    The	svc_create() function creates server handles for all the
	    transports belonging to the	class nettype.	The nettype argument
	    defines a class of transports which	can be used for	a particular
	    application.  The transports are tried in left to right order in
	    NETPATH variable or	in top to bottom order in the netconfig	data-
	    base.  If nettype is NULL, it defaults to "netpath".

	    The	svc_create() function registers	itself with the	rpcbind	ser-
	    vice (see rpcbind(8)).  The	dispatch function is called when there
	    is a remote	procedure call for the given prognum and versnum; this
	    requires calling svc_run() (see svc_run() in rpc_svc_reg(3)).  If
	    svc_create() succeeds, it returns the number of server handles it
	    created, otherwise it returns 0 and	an error message is logged.

     svc_destroy()
	    A function macro that destroys the RPC service handle xprt.
	    Destruction	usually	involves deallocation of private data struc-
	    tures, including xprt itself.  Use of xprt is undefined after
	    calling this routine.

     svc_dg_create()
	    This routine creates a connectionless RPC service handle, and
	    returns a pointer to it.  This routine returns NULL	if it fails,
	    and	an error message is logged.  The sendsz	and recvsz arguments
	    are	arguments used to specify the size of the buffers.  If they
	    are	0, suitable defaults are chosen.  The file descriptor fildes
	    should be open and bound.  The server is not registered with
	    rpcbind(8).

	    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.

     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-ori-
	    ented transport.  The sendsz and recvsz arguments indicate sizes
	    for	the send and receive buffers.  If they are 0, reasonable
	    defaults are chosen.  This routine returns NULL if it fails, and
	    an error message is	logged.

     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 clnt_raw_create() in rpc_clnt_create(3)).
	    This routine allows	simulation of RPC and acquisition of RPC over-
	    heads (such	as round trip times), without any kernel and network-
	    ing	interference.  This routine returns NULL if it fails, and an
	    error message is logged.

	    Note: svc_run() should not be called when the raw interface	is
	    being used.

     svc_tli_create()
	    This routine creates an RPC	server handle, and returns a pointer
	    to it.  The	fildes argument	is the file descriptor on which	the
	    service is listening.  If fildes is	RPC_ANYFD, it opens a file
	    descriptor on the transport	specified by netconf.  If the file
	    descriptor is unbound and bindaddr is not NULL, fildes is bound to
	    the	address	specified by bindaddr, otherwise fildes	is bound to a
	    default address chosen by the transport.

	    Note: the t_bind structure comes from the TLI/XTI SysV interface,
	    which NetBSD does not use.	The structure is defined in
	    <rpc/types.h> for compatibility as:

	    struct t_bind {
		struct netbuf addr; /* network address,	see rpc(3) */
		unsigned int  qlen; /* queue length (for listen(2)) */
	    };

	    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 arguments sendsz and recvsz; values of 0 choose
	    suitable defaults.	This routine returns NULL if it	fails, and an
	    error message is logged.  The server is not	registered with	the
	    rpcbind(8) service.

     svc_tp_create()
	    The	svc_tp_create()	function creates a server handle for the net-
	    work specified by netconf, and registers itself with the rpcbind
	    service.  The dispatch function is called when there is a remote
	    procedure call for the given prognum and versnum; this requires
	    calling svc_run().	The svc_tp_create() function returns the ser-
	    vice handle	if it succeeds,	otherwise a NULL is returned and an
	    error message is logged.

     svc_vc_create()
	    This routine creates a connection-oriented RPC service and returns
	    a pointer to it.  This routine returns NULL	if it fails, and an
	    error message is logged.  The users	may specify the	size of	the
	    send and receive buffers with the arguments	sendsz and recvsz;
	    values of 0	choose suitable	defaults.  The file descriptor fildes
	    should be open and bound.  The server is not registered with the
	    rpcbind(8) service.

SEE ALSO
     rpc(3), rpc_svc_calls(3), rpc_svc_err(3), rpc_svc_reg(3), rpcbind(8)

FreeBSD	Ports 11.2		  May 3, 1993		    FreeBSD Ports 11.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | Routines | SEE ALSO

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