Man Pages

---

Back to Software Index  Manpage Top Level

Name

MT-Level

MT-Safe

Description

Routines

#include <rpc/rpc.h>

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

A function to change or retrieve various information

about a service object. req 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. info 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. info 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).

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

svc_create()

creates server handles for all the transports belonging to the class nettype.

nettype

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 database. If nettype is NULL , it defaults to netpath.

svc_create()

registers itself with the rpcbind service (see rpcbind(1M) ). dispatch 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(3N) ). If svc_create() succeeds, it returns the number of server handles it created, otherwise it returns 0 and an error message is logged.

void svc_destroy(SVCXPRT *xprt);

A function macro that destroys the

RPC service handle xprt. Destruction usually involves deallocation of private data structures, including xprt itself. Use of xprt is undefined after calling this routine.

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

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. sendsz and recvsz are parameters 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(1M) .

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.

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

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. sendsz and recvsz 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.

SVCXPRT *svc_raw_create(void);

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(3N) ). 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 NULL if it fails, and an error message is logged.

Note:

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

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

This routine creates an

RPC server handle, and returns a pointer to it. fildes 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 non-null fildes is bound to the address specified by bindaddr, otherwise fildes is bound to a default address chosen by the transport. 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 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(1M) service.

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

svc_tp_create()

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

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

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 parameters 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(1M) service.

See Also

Table of Contents

• Name
• MT-Level
• Description
• Routines
• See Also