NAME

rpcbind: rpcb_getmaps, rpcb_getaddr, rpcb_gettime, rpcb_rmtcall, rpcb_set, rpcb_unset - library routines for RPC bind service

DESCRIPTION

These routines allow client C programs to make procedure calls to the RPC binder service. rpcbind [see rpcbind(1M)] maintains a list of mappings between programs and their universal addresses.

Routines

#include <rpc/rpc.h>

struct rpcblist *
rpcb_getmaps(const struct netconfig *netconf, const char *host);

     A user interface to the rpcbind service, which  returns
     a  list  of the current RPC program-to-address mappings
     on the host named.  It  uses  the  transport  specified
     through  netconf  to contact the remote rpcbind service
     on host host.  This routine will return  NULL,  if  the
     remote rpcbind could not be contacted.
     bool_t
     rpcb_getaddr(const u_long prognum, const u_long versnum,
          const struct netconfig *netconf, struct netbuf *svcaddr,
          const char *host);

     A user 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 associated with netconf.
     The address found  is  returned  in  svcaddr.   svcaddr
     should  be  preallocated.  This routine returns 1 if it
     succeeds.  A return value of 0 means that  the  mapping
     does not exist or that the RPC system failed to contact
     the remote rpcbind service.  In the  latter  case,  the
     global variable rpc_createerr contains the RPC status.
     bool_t
     rpcb_gettime(const char *host, time_t *timep);

     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 1 if it succeeds,  0  if
     it  fails.  rpcb_gettime can be used to synchronize the
     time between the client and  the  remote  server.  This
     routine is particularly useful for secure RPC.
     enum clnt_stat
     rpcb_rmtcall(const struct netconfig *netconf, const char *host,
          const u_long prognum, const u_long versnum, const u_long procnum,
          const xdrproc_t inproc, const caddr_t in,

          const xdrproc_t outproc, const caddr_t out,
          const struct timeval tout, struct netbuf  *svcaddr);

A user 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 parameter *svcaddr will be modified to the server's address if the procedure succeeds [see rpc_call and clnt_call in rpc_clnt_calls(3N) for the definitions of other parameters]. This procedure should normally be used for a ping and nothing else [see rpc_broadcast in rpc_clnt_calls(3N)]. This routine allows programs to do lookup and call, all in one step.

bool_t
rpcb_set(const u_long prognum, const u_long versnum,
     const struct netconfig *netconf, const struct netbuf *svcaddr);

A user interface to the rpcbind service,  which  estab-
lishes  a mapping between the triple [prognum, versnum,
netconf->nc_netid] and svcaddr on the machine's rpcbind
service.   The  value of transport must correspond to a
network token that is defined by  the  netconfig  data-
base.   This routine returns 1 if it succeeds, 0 other-
wise.  [See also svc_reg in rpc_svc_calls(3N)].
bool_t
rpcb_unset(const u_long prognum, const u_long versnum,
     const struct netconfig *netconf);

A user interface to the rpcbind service, which destroys all 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, *] and the addresses on the machine's rpcbind service. This routine returns 1 if it succeeds, 0 otherwise. [See also svc_unreg in rpc_svc_calls(3N)].

SEE ALSO

rpc_clnt_calls(3N), rpc_svc_calls(3N), rpcbind(1M),
rpcinfo(1M).