RPCBIND(3) BSD Library Functions Manual RPCBIND(3)
NAME
rpcb_getmaps, rpcb_getaddr, rpcb_gettime, rpcb_rmtcall, rpcb_set,
rpcb_unset -- library routines for RPC bind service
SYNOPSIS
#include <rpc/rpc.h>
rpcblist *
rpcb_getmaps(const struct netconfig *netconf, const char *host);
bool_t
rpcb_getaddr(const rpcprog_t prognum, const rpcvers_t versnum,
const struct netconfig *netconf, struct netbuf *svcaddr,
const char *host);
bool_t
rpcb_gettime(const char *host, time_t * timep);
enum clnt_stat
rpcb_rmtcall(const struct netconfig *netconf, const char *host,
const rpcprog_t prognum, const rpcvers_t versnum,
const rpcproc_t procnum, const xdrproc_t inproc, const caddr_t in,
const xdrproc_t outproc, const caddr_t out,
const struct timeval tout, const struct netbuf *svcaddr);
bool_t
rpcb_set(const rpcprog_t prognum, const rpcvers_t versnum,
const struct netconfig *netconf, const struct netbuf *svcaddr);
bool_t
rpcb_unset(const rpcprog_t prognum, const rpcvers_t versnum,
const struct netconfig *netconf);
DESCRIPTION
These routines allow client C programs to make procedure calls to the RPC
binder service. (see rpcbind(8)) maintains a list of mappings between
programs and their universal addresses.
Routines
rpcb_getmaps()
An interface to the rpcbind service, which returns a list of the
current RPC program-to-address mappings on host. It uses the
transport specified through netconf to contact the remote rpcbind
service on host. This routine will return NULL, if the remote
rpcbind could not be contacted.
rpcb_getaddr()
An interface to the rpcbind service, which finds the address of
the service on host that is registered with program number
prognum, version versnum, and speaks the transport protocol asso-
ciated with netconf. The address found is returned in svcaddr.
The svcaddr argument should be preallocated. This routine returns
TRUE if it succeeds. A return value of FALSE means that the map-
ping does not exist or that the RPC system failed to contact the
remote rpcbind service. In the latter case, the global variable
rpc_createerr (see rpc_clnt_create(3)) contains the RPC status.
rpcb_gettime()
This routine returns the time on host in timep. If host is NULL,
rpcb_gettime() returns the time on its own machine. This routine
returns TRUE if it succeeds, FALSE if it fails. The
rpcb_gettime() function can be used to synchronize the time be-
tween the client and the remote server.
rpcb_rmtcall()
An interface to the rpcbind service, which instructs rpcbind on
host to make an RPC call on your behalf to a procedure on that
host. The netconfig() structure should correspond to a connec-
tionless transport. The svcaddr argument will be modified to the
server's address if the procedure succeeds (see rpc_call() and
clnt_call() in rpc_clnt_calls(3) for the definitions of other ar-
guments).
This procedure should normally be used for a "ping" and nothing
else. This routine allows programs to do lookup and call, all in
one step.
Note: Even if the server is not running rpcb_rmtcall() does not
return any error messages to the caller. In such a case, the
caller times out.
Note: rpcb_rmtcall() is only available for connectionless trans-
ports.
rpcb_set()
An interface to the rpcbind service, which establishes a mapping
between the triple [prognum, versnum, netconf->nc_netid] and
svcaddr on the machine's rpcbind service. The value of nc_netid
must correspond to a network identifier that is defined by the
netconfig database. This routine returns TRUE if it succeeds,
FALSE otherwise. (See also svc_reg() in rpc_svc_calls(3).) If
there already exists such an entry with rpcbind, rpcb_set() will
fail.
rpcb_unset()
An interface to the rpcbind service, which destroys the mapping
between the triple [prognum, versnum, netconf->nc_netid] and the
address on the machine's rpcbind service. If netconf is NULL,
rpcb_unset() destroys all mapping between the triple [prognum,
versnum, all-transports] and the addresses on the machine's
rpcbind service. This routine returns TRUE if it succeeds, FALSE
otherwise. Only the owner of the service or the super-user can
destroy the mapping. (See also svc_unreg() in rpc_svc_calls(3).)
AVAILABILITY
These functions are part of libtirpc.
SEE ALSO
rpc_clnt_calls(3), rpc_svc_calls(3), rpcbind(8), rpcinfo(8)
BSD May 7, 1993 BSD