callrpc

RPC(3)                     Linux Programmer's Manual                    RPC(3)

NAME
       rpc - library routines for remote procedure calls

SYNOPSIS AND DESCRIPTION
       These  routines  allow  C programs to make procedure calls on other ma-
       chines across the network.  First, the client calls a procedure to send
       a  data  packet  to the server.  Upon receipt of the packet, the server
       calls a dispatch routine to perform the  requested  service,  and  then
       sends back a reply.  Finally, the procedure call returns to the client.

       To take use of these routines, include the header file <rpc/rpc.h>.

       The prototypes below make use of the following types:

           typedef int bool_t;

       typedef bool_t (*xdrproc_t) (XDR *, void *, ...);

       typedef bool_t (*resultproc_t) (caddr_t resp,
                                       struct sockaddr_in *raddr);

       See the header files for the declarations of the AUTH, CLIENT, SVCXPRT,
       and XDR types.

       void auth_destroy(AUTH *auth);

              A macro that destroys the authentication information  associated
              with auth.  Destruction usually involves deallocation of private
              data structures.  The use of auth  is  undefined  after  calling
              auth_destroy().

       AUTH *authnone_create(void);

              Create  and  return  an  RPC  authentication  handle that passes
              nonusable authentication information with each remote  procedure
              call.  This is the default authentication used by RPC.

       AUTH *authunix_create(char *host, int uid, int gid,
                             int len, int *aup_gids);

              Create and return an RPC authentication handle that contains au-
              thentication information.  The parameter host is the name of the
              machine  on which the information was created; uid is the user's
              user ID; gid is the user's current group ID;  len  and  aup_gids
              refer  to  a  counted array of groups to which the user belongs.
              It is easy to impersonate a user.

       AUTH *authunix_create_default(void);

              Calls authunix_create() with the appropriate parameters.

       int callrpc(char *host, unsigned long prognum,
                   unsigned long versnum, unsigned long procnum,
                   xdrproc_t inproc, char *in,
                   xdrproc_t outproc, char *out);

              Call the remote procedure associated with prognum, versnum,  and
              procnum  on  the machine, host.  The parameter in is the address
              of the procedure's argument(s), and out is the address of  where
              to place the result(s); inproc is used to encode the procedure's
              parameters, and outproc is used to decode  the  procedure's  re-
              sults.   This  routine returns zero if it succeeds, or the value
              of enum clnt_stat cast to an integer if it fails.   The  routine
              clnt_perrno()  is  handy  for  translating failure statuses into
              messages.

              Warning: calling remote procedures with this routine uses UDP/IP
              as  a  transport; see clntudp_create() for restrictions.  You do
              not have control of timeouts or authentication using  this  rou-
              tine.

       enum clnt_stat clnt_broadcast(unsigned long prognum,
                            unsigned long versnum, unsigned long procnum,
                            xdrproc_t inproc, char *in,
                            xdrproc_t outproc, char *out,
                            resultproc_t eachresult);

              Like  callrpc(), except the call message is broadcast to all lo-
              cally connected broadcast nets.  Each time  it  receives  a  re-
              sponse, this routine calls eachresult(), whose form is:

                  eachresult(char *out, struct sockaddr_in *addr);

              where  out is the same as out passed to clnt_broadcast(), except
              that the remote procedure's output is decoded there; addr points
              to the address of the machine that sent the results.  If eachre-
              sult() returns zero, clnt_broadcast() waits  for  more  replies;
              otherwise it returns with appropriate status.

              Warning:  broadcast  sockets  are limited in size to the maximum
              transfer unit of the data link.  For  ethernet,  this  value  is
              1500 bytes.

       enum clnt_stat clnt_call(CLIENT *clnt, unsigned long procnum,
                           xdrproc_t inproc, char *in,
                           xdrproc_t outproc, char *out,
                           struct timeval tout);

              A  macro that calls the remote procedure procnum associated with
              the client handle, clnt, which is obtained with  an  RPC  client
              creation routine such as clnt_create().  The parameter in is the
              address of the procedure's argument(s), and out is  the  address
              of  where  to  place the result(s); inproc is used to encode the
              procedure's parameters, and outproc is used to decode the proce-
              dure's  results;  tout  is  the time allowed for results to come
              back.

       clnt_destroy(CLIENT *clnt);

              A macro that destroys the client's RPC handle.  Destruction usu-
              ally involves deallocation of private data structures, including
              clnt itself.  Use of clnt is undefined  after  calling  clnt_de-
              stroy().   If  the  RPC library opened the associated socket, it
              will close it also.  Otherwise, the socket remains open.

       CLIENT *clnt_create(char *host, unsigned long prog,
                           unsigned long vers, char *proto);

              Generic client creation routine.  host identifies  the  name  of
              the  remote  host  where the server is located.  proto indicates
              which kind of transport protocol to  use.   The  currently  sup-
              ported values for this field are "udp" and "tcp".  Default time-
              outs are set, but can be modified using clnt_control().

              Warning: using UDP has its shortcomings.   Since  UDP-based  RPC
              messages  can  hold  only  up  to 8 Kbytes of encoded data, this
              transport cannot be used for procedures that  take  large  argu-
              ments or return huge results.

       bool_t clnt_control(CLIENT *cl, int req, char *info);

              A  macro  used to change or retrieve various information about a
              client object.  req indicates the type of operation, and info is
              a  pointer  to  the information.  For both UDP and TCP, the sup-
              ported values of req and their argument types and what  they  do
              are:

                  CLSET_TIMEOUT  struct timeval // set total timeout
                  CLGET_TIMEOUT  struct timeval // get total timeout

              Note:  if  you set the timeout using clnt_control(), the timeout
              parameter passed to clnt_call() will be ignored  in  all  future
              calls.

                  CLGET_SERVER_ADDR  struct sockaddr_in  // get server's address

              The following operations are valid for UDP only:

                  CLSET_RETRY_TIMEOUT  struct timeval // set the retry timeout
                  CLGET_RETRY_TIMEOUT  struct timeval // get the retry timeout

              The  retry  timeout  is  the  time  that "UDP RPC" waits for the
              server to reply before retransmitting the request.

       clnt_freeres(CLIENT * clnt, xdrproc_t outproc, char *out);

              A macro that frees any data allocated by the RPC/XDR system when
              it decoded the results of an RPC call.  The parameter out is the
              address of the results, and outproc is the XDR routine  describ-
              ing  the  results.  This routine returns one if the results were
              successfully freed, and zero otherwise.

       void clnt_geterr(CLIENT *clnt, struct rpc_err *errp);

              A macro that copies the error structure out of the client handle
              to the structure at address errp.

       void clnt_pcreateerror(char *s);

              Print  a  message  to standard error indicating why a client RPC
              handle could not be created.   The  message  is  prepended  with
              string  s  and a colon.  Used when a clnt_create(), clntraw_cre-
              ate(), clnttcp_create(), or clntudp_create() call fails.

       void clnt_perrno(enum clnt_stat stat);

              Print a message to standard error corresponding to the condition
              indicated by stat.  Used after callrpc().

       clnt_perror(CLIENT *clnt, char *s);

              Print  a  message  to  standard error indicating why an RPC call
              failed; clnt is the handle used to do the call.  The message  is
              prepended with string s and a colon.  Used after clnt_call().

       char *clnt_spcreateerror(char *s);

              Like  clnt_pcreateerror(),  except  that it returns a string in-
              stead of printing to the standard error.

              Bugs: returns pointer to static data that is overwritten on each
              call.

       char *clnt_sperrno(enum clnt_stat stat);

              Take the same arguments as clnt_perrno(), but instead of sending
              a message to the standard  error  indicating  why  an  RPC  call
              failed, return a pointer to a string which contains the message.
              The string ends with a NEWLINE.

              clnt_sperrno() is used instead of clnt_perrno() if  the  program
              does not have a standard error (as a program running as a server
              quite likely does not), or if the programmer does not  want  the
              message to be output with printf(3), or if a message format dif-
              ferent than that supported  by  clnt_perrno()  is  to  be  used.
              Note: unlike clnt_sperror() and clnt_spcreateerror(), clnt_sper-
              rno() returns pointer to static data, but the  result  will  not
              get overwritten on each call.

       char *clnt_sperror(CLIENT *rpch, char *s);

              Like clnt_perror(), except that (like clnt_sperrno()) it returns
              a string instead of printing to standard error.

              Bugs: returns pointer to static data that is overwritten on each
              call.

       CLIENT *clntraw_create(unsigned long prognum, unsigned long versnum);

              This  routine  creates  a  toy RPC client for the remote program
              prognum, version versnum.  The transport used to  pass  messages
              to the service is actually a buffer within the process's address
              space, so the corresponding RPC server should live in  the  same
              address  space;  see svcraw_create().  This allows simulation of
              RPC and acquisition of RPC overheads, such as round trip  times,
              without  any  kernel interference.  This routine returns NULL if
              it fails.

       CLIENT *clnttcp_create(struct sockaddr_in *addr,
                       unsigned long prognum, unsigned long versnum,
                       int *sockp, unsigned int sendsz, unsigned int recvsz);

              This routine creates  an  RPC  client  for  the  remote  program
              prognum, version versnum; the client uses TCP/IP as a transport.
              The remote program is located at  Internet  address  *addr.   If
              addr->sin_port  is  zero, then it is set to the actual port that
              the remote program is listening on (the remote  portmap  service
              is  consulted  for  this information).  The parameter sockp is a
              socket; if it is RPC_ANYSOCK, then this routine opens a new  one
              and sets sockp.  Since TCP-based RPC uses buffered I/O, the user
              may specify the size of the send and receive  buffers  with  the
              parameters sendsz and recvsz; values of zero choose suitable de-
              faults.  This routine returns NULL if it fails.

       CLIENT *clntudp_create(struct sockaddr_in *addr,
                       unsigned long prognum, unsigned long versnum,
                       struct timeval wait, int *sockp);

              This routine creates  an  RPC  client  for  the  remote  program
              prognum, version versnum; the client uses use UDP/IP as a trans-
              port.  The remote program is located at Internet  address  addr.
              If  addr->sin_port  is  zero, then it is set to actual port that
              the remote program is listening on (the remote  portmap  service
              is  consulted  for  this information).  The parameter sockp is a
              socket; if it is RPC_ANYSOCK, then this routine opens a new  one
              and  sets  sockp.  The UDP transport resends the call message in
              intervals of wait time until a response is received or until the
              call  times  out.   The  total  time for the call to time out is
              specified by clnt_call().

              Warning: since UDP-based RPC messages can  hold  only  up  to  8
              Kbytes of encoded data, this transport cannot be used for proce-
              dures that take large arguments or return huge results.

       CLIENT *clntudp_bufcreate(struct sockaddr_in *addr,
                   unsigned long prognum, unsigned long versnum,
                   struct timeval wait, int *sockp,
                   unsigned int sendsize, unsigned int recosize);

              This routine creates  an  RPC  client  for  the  remote  program
              prognum,  on versnum; the client uses use UDP/IP as a transport.
              The remote program is located  at  Internet  address  addr.   If
              addr->sin_port  is  zero, then it is set to actual port that the
              remote program is listening on (the remote  portmap  service  is
              consulted  for  this  information).   The  parameter  sockp is a
              socket; if it is RPC_ANYSOCK, then this routine opens a new  one
              and  sets  sockp.  The UDP transport resends the call message in
              intervals of wait time until a response is received or until the
              call  times  out.   The  total  time for the call to time out is
              specified by clnt_call().

              This allows the user to specify  the  maximum  packet  size  for
              sending and receiving UDP-based RPC messages.

       void get_myaddress(struct sockaddr_in *addr);

              Stuff  the  machine's  IP address into *addr, without consulting
              the library routines that deal with /etc/hosts.  The port number
              is always set to htons(PMAPPORT).

       struct pmaplist *pmap_getmaps(struct sockaddr_in *addr);

              A user interface to the portmap service, which returns a list of
              the current RPC program-to-port mappings on the host located  at
              IP  address  *addr.   This routine can return NULL.  The command
              rpcinfo -p uses this routine.

       unsigned short pmap_getport(struct sockaddr_in *addr,
                           unsigned long prognum, unsigned long versnum,
                           unsigned int protocol);

              A user interface to the portmap service, which returns the  port
              number  on  which  waits  a service that supports program number
              prognum, version versnum, and speaks the transport protocol  as-
              sociated  with  protocol.   The value of protocol is most likely
              IPPROTO_UDP or IPPROTO_TCP.  A return value of zero  means  that
              the mapping does not exist or that the RPC system failed to con-
              tact the remote portmap service.  In the latter case, the global
              variable rpc_createerr contains the RPC status.

       enum clnt_stat pmap_rmtcall(struct sockaddr_in *addr,
                           unsigned long prognum, unsigned long versnum,
                           unsigned long procnum,
                           xdrproc_t inproc, char *in,
                           xdrproc_t outproc, char *out,
                           struct timeval tout, unsigned long *portp);

              A user interface to the portmap service, which instructs portmap
              on the host at IP address *addr to make an RPC call on your  be-
              half  to a procedure on that host.  The parameter *portp will be
              modified to the program's port number if the procedure succeeds.
              The  definitions  of other parameters are discussed in callrpc()
              and clnt_call().  This procedure should be used for a "ping" and
              nothing else.  See also clnt_broadcast().

       bool_t pmap_set(unsigned long prognum, unsigned long versnum,
                       unsigned int protocol, unsigned short port);

              A  user  interface  to  the portmap service, which establishes a
              mapping between the triple [prognum,versnum,protocol]  and  port
              on the machine's portmap service.  The value of protocol is most
              likely IPPROTO_UDP or IPPROTO_TCP.  This routine returns one  if
              it  succeeds,  zero otherwise.  Automatically done by svc_regis-
              ter().

       bool_t pmap_unset(unsigned long prognum, unsigned long versnum);

              A user interface to the portmap service, which destroys all map-
              ping between the triple [prognum,versnum,*] and ports on the ma-
              chine's portmap service.  This routine returns one  if  it  suc-
              ceeds, zero otherwise.

       int registerrpc(unsigned long prognum, unsigned long versnum,
                       unsigned long procnum, char *(*procname)(char *),
                       xdrproc_t inproc, xdrproc_t outproc);

              Register  procedure procname with the RPC service package.  If a
              request arrives for program prognum, version versnum, and proce-
              dure  procnum,  procname is called with a pointer to its parame-
              ter(s); procname should return  a  pointer  to  its  static  re-
              sult(s);  inproc  is used to decode the parameters while outproc
              is used to encode the results.  This routine returns zero if the
              registration succeeded, -1 otherwise.

              Warning:  remote procedures registered in this form are accessed
              using the UDP/IP transport;  see  svcudp_create()  for  restric-
              tions.

       struct rpc_createerr rpc_createerr;

              A  global variable whose value is set by any RPC client creation
              routine that does not succeed.  Use the routine  clnt_pcreateer-
              ror() to print the reason why.

       void svc_destroy(SVCXPRT *xprt);

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

       fd_set svc_fdset;

              A global variable reflecting the RPC service  side's  read  file
              descriptor  bit  mask;  it is suitable as a parameter to the se-
              lect(2) system call.  This is of interest only if a service  im-
              plementor  does their own asynchronous event processing, instead
              of calling svc_run().  This variable is read-only (do  not  pass
              its  address  to  select(2)!),  yet it may change after calls to
              svc_getreqset() or any creation routines.

       int svc_fds;

              Similar to svc_fdset, but limited to 32 file descriptors.   This
              interface is obsoleted by svc_fdset.

       svc_freeargs(SVCXPRT *xprt, xdrproc_t inproc, char *in);

              A macro that frees any data allocated by the RPC/XDR system when
              it  decoded  the  arguments  to  a   service   procedure   using
              svc_getargs().   This routine returns 1 if the results were suc-
              cessfully freed, and zero otherwise.

       svc_getargs(SVCXPRT *xprt, xdrproc_t inproc, char *in);

              A macro that decodes the arguments of an RPC request  associated
              with  the  RPC service transport handle, xprt.  The parameter in
              is the address where the arguments will be placed; inproc is the
              XDR  routine used to decode the arguments.  This routine returns
              one if decoding succeeds, and zero otherwise.

       struct sockaddr_in *svc_getcaller(SVCXPRT *xprt);

              The approved way of getting the network address of the caller of
              a  procedure  associated  with the RPC service transport handle,
              xprt.

       void svc_getreqset(fd_set *rdfds);

              This routine is of interest only if a service  implementor  does
              not  call  svc_run(), but instead implements custom asynchronous
              event processing.  It is called when the select(2)  system  call
              has  determined  that  an  RPC  request  has arrived on some RPC
              socket(s); rdfds is the resultant read file descriptor bit mask.
              The  routine  returns when all sockets associated with the value
              of rdfds have been serviced.

       void svc_getreq(int rdfds);

              Similar to svc_getreqset(), but limited to 32 file  descriptors.
              This interface is obsoleted by svc_getreqset().

       bool_t svc_register(SVCXPRT *xprt, unsigned long prognum,
                           unsigned long versnum,
                           void (*dispatch)(svc_req *, SVCXPRT *),
                           unsigned long protocol);

              Associates  prognum and versnum with the service dispatch proce-
              dure, dispatch.  If protocol is zero, the service is not  regis-
              tered  with the portmap service.  If protocol is nonzero, then a
              mapping   of   the    triple    [prognum,versnum,protocol]    to
              xprt->xp_port  is  established  with  the  local portmap service
              (generally protocol is zero, IPPROTO_UDP or  IPPROTO_TCP).   The
              procedure dispatch has the following form:

                  dispatch(struct svc_req *request, SVCXPRT *xprt);

              The  svc_register() routine returns one if it succeeds, and zero
              otherwise.

       void svc_run(void);

              This routine never returns.  It waits for RPC  requests  to  ar-
              rive,  and calls the appropriate service procedure using svc_ge-
              treq() when one arrives.  This procedure is usually waiting  for
              a select(2) system call to return.

       bool_t svc_sendreply(SVCXPRT *xprt, xdrproc_t outproc, char *out);

              Called  by an RPC service's dispatch routine to send the results
              of a remote procedure call.  The parameter xprt is the request's
              associated transport handle; outproc is the XDR routine which is
              used to encode the results; and out is the address  of  the  re-
              sults.  This routine returns one if it succeeds, zero otherwise.

       void svc_unregister(unsigned long prognum, unsigned long versnum);

              Remove  all  mapping of the double [prognum,versnum] to dispatch
              routines, and of the triple [prognum,versnum,*] to port number.

       void svcerr_auth(SVCXPRT *xprt, enum auth_stat why);

              Called by a service dispatch routine that refuses to  perform  a
              remote procedure call due to an authentication error.

       void svcerr_decode(SVCXPRT *xprt);

              Called  by  a  service dispatch routine that cannot successfully
              decode its parameters.  See also svc_getargs().

       void svcerr_noproc(SVCXPRT *xprt);

              Called by a service dispatch routine that does not implement the
              procedure number that the caller requests.

       void svcerr_noprog(SVCXPRT *xprt);

              Called  when  the desired program is not registered with the RPC
              package.  Service implementors usually do not need this routine.

       void svcerr_progvers(SVCXPRT *xprt);

              Called when the desired version of a program is  not  registered
              with  the RPC package.  Service implementors usually do not need
              this routine.

       void svcerr_systemerr(SVCXPRT *xprt);

              Called by a service dispatch routine when it  detects  a  system
              error not covered by any particular protocol.  For example, if a
              service can no longer allocate storage, it may  call  this  rou-
              tine.

       void svcerr_weakauth(SVCXPRT *xprt);

              Called  by  a service dispatch routine that refuses to perform a
              remote procedure call due to insufficient authentication parame-
              ters.  The routine calls svcerr_auth(xprt, AUTH_TOOWEAK).

       SVCXPRT *svcfd_create(int fd, unsigned int sendsize,
                             unsigned int recvsize);

              Create a service on top of any open file descriptor.  Typically,
              this file descriptor is a connected socket for a stream protocol
              such  as TCP.  sendsize and recvsize indicate sizes for the send
              and receive buffers.  If they are zero, a reasonable default  is
              chosen.

       SVCXPRT *svcraw_create(void);

              This  routine  creates  a toy RPC service transport, to which it
              returns a pointer.  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 clntraw_create().  This rou-
              tine  allows  simulation of RPC and acquisition of RPC overheads
              (such as round trip times),  without  any  kernel  interference.
              This routine returns NULL if it fails.

       SVCXPRT *svctcp_create(int sock, unsigned int send_buf_size,
                              unsigned int recv_buf_size);

              This  routine  creates  a TCP/IP-based RPC service transport, to
              which it returns a pointer.  The transport  is  associated  with
              the  socket  sock, which may be RPC_ANYSOCK, in which case a new
              socket is created.  If the socket is not bound to  a  local  TCP
              port,  then  this  routine  binds it to an arbitrary port.  Upon
              completion, xprt->xp_sock is the transport's socket  descriptor,
              and  xprt->xp_port is the transport's port number.  This routine
              returns NULL if it fails.  Since  TCP-based  RPC  uses  buffered
              I/O,  users  may  specify  the  size  of buffers; values of zero
              choose suitable defaults.

       SVCXPRT *svcudp_bufcreate(int sock, unsigned int sendsize,
                                 unsigned int recosize);

              This routine creates a UDP/IP-based RPC  service  transport,  to
              which  it  returns  a pointer.  The transport is associated with
              the socket sock, which may be RPC_ANYSOCK, in which case  a  new
              socket  is  created.   If the socket is not bound to a local UDP
              port, then this routine binds it to  an  arbitrary  port.   Upon
              completion,  xprt->xp_sock is the transport's socket descriptor,
              and xprt->xp_port is the transport's port number.  This  routine
              returns NULL if it fails.

              This  allows  the  user  to  specify the maximum packet size for
              sending and receiving UDP-based RPC messages.

       SVCXPRT *svcudp_create(int sock);

              This call is equivalent to svcudp_bufcreate(sock,SZ,SZ) for some
              default size SZ.

       bool_t xdr_accepted_reply(XDR *xdrs, struct accepted_reply *ar);

              Used  for  encoding  RPC reply messages.  This routine is useful
              for users who wish to generate RPC-style messages without  using
              the RPC package.

       bool_t xdr_authunix_parms(XDR *xdrs, struct authunix_parms *aupp);

              Used  for  describing  UNIX credentials.  This routine is useful
              for users who wish to generate these credentials  without  using
              the RPC authentication package.

       void xdr_callhdr(XDR *xdrs, struct rpc_msg *chdr);

              Used  for  describing RPC call header messages.  This routine is
              useful for users who wish to generate RPC-style messages without
              using the RPC package.

       bool_t xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg);

              Used  for  describing RPC call messages.  This routine is useful
              for users who wish to generate RPC-style messages without  using
              the RPC package.

       bool_t xdr_opaque_auth(XDR *xdrs, struct opaque_auth *ap);

              Used  for  describing  RPC  authentication information messages.
              This routine is useful for users who wish to generate  RPC-style
              messages without using the RPC package.

       bool_t xdr_pmap(XDR *xdrs, struct pmap *regs);

              Used  for  describing  parameters to various portmap procedures,
              externally.  This routine is useful for users who wish to gener-
              ate these parameters without using the pmap interface.

       bool_t xdr_pmaplist(XDR *xdrs, struct pmaplist **rp);

              Used  for  describing a list of port mappings, externally.  This
              routine is useful for users who wish to generate  these  parame-
              ters without using the pmap interface.

       bool_t xdr_rejected_reply(XDR *xdrs, struct rejected_reply *rr);

              Used  for describing RPC reply messages.  This routine is useful
              for users who wish to generate RPC-style messages without  using
              the RPC package.

       bool_t xdr_replymsg(XDR *xdrs, struct rpc_msg *rmsg);

              Used  for describing RPC reply messages.  This routine is useful
              for users who wish to generate RPC style messages without  using
              the RPC package.

       void xprt_register(SVCXPRT *xprt);

              After  RPC  service  transport  handles are created, they should
              register themselves with the RPC service package.  This  routine
              modifies the global variable svc_fds.  Service implementors usu-
              ally do not need this routine.

       void xprt_unregister(SVCXPRT *xprt);

              Before an RPC service transport handle is destroyed,  it  should
              unregister  itself  with  the RPC service package.  This routine
              modifies the global variable svc_fds.  Service implementors usu-
              ally do not need this routine.

ATTRIBUTES
       For  an  explanation  of  the  terms  used  in  this  section,  see at-
       tributes(7).

       +------------------------------------+---------------+---------+
       |Interface                           | Attribute     | Value   |
       +------------------------------------+---------------+---------+
       |auth_destroy(), authnone_create(),  | Thread safety | MT-Safe |
       |authunix_create(),                  |               |         |
       |authunix_create_default(),          |               |         |
       |callrpc(), clnt_broadcast(),        |               |         |
       |clnt_call(), clnt_destroy(),        |               |         |
       |clnt_create(), clnt_control(),      |               |         |
       |clnt_freeres(), clnt_geterr(),      |               |         |
       |clnt_pcreateerror(), clnt_perrno(), |               |         |
       |clnt_perror(),                      |               |         |
       |clnt_spcreateerror(),               |               |         |
       |clnt_sperrno(), clnt_sperror(),     |               |         |
       |clntraw_create(), clnttcp_create(), |               |         |
       |clntudp_create(),                   |               |         |
       |clntudp_bufcreate(),                |               |         |
       |get_myaddress(), pmap_getmaps(),    |               |         |
       |pmap_getport(), pmap_rmtcall(),     |               |         |
       |pmap_set(), pmap_unset(),           |               |         |
       |registerrpc(), svc_destroy(),       |               |         |
       |svc_freeargs(), svc_getargs(),      |               |         |
       |svc_getcaller(), svc_getreqset(),   |               |         |
       |svc_getreq(), svc_register(),       |               |         |
       |svc_run(), svc_sendreply(),         |               |         |
       |svc_unregister(), svcerr_auth(),    |               |         |
       |svcerr_decode(), svcerr_noproc(),   |               |         |
       |svcerr_noprog(), svcerr_progvers(), |               |         |
       |svcerr_systemerr(),                 |               |         |
       |svcerr_weakauth(),                  |               |         |
       |svcfd_create(), svcraw_create(),    |               |         |
       |svctcp_create(),                    |               |         |
       |svcudp_bufcreate(),                 |               |         |
       |svcudp_create(), xdr_accepted_re-   |               |         |
       |ply(),                              |               |         |
       |xdr_authunix_parms(),               |               |         |
       |xdr_callhdr(),                      |               |         |
       |xdr_callmsg(), xdr_opaque_auth(),   |               |         |
       |xdr_pmap(), xdr_pmaplist(),         |               |         |
       |xdr_rejected_reply(),               |               |         |
       |xdr_replymsg(),                     |               |         |
       |xprt_register(), xprt_unregister()  |               |         |
       +------------------------------------+---------------+---------+
SEE ALSO
       xdr(3)

       The following manuals:
              Remote Procedure Calls: Protocol Specification
              Remote Procedure Call Programming Guide
              rpcgen Programming Guide

       RPC: Remote Procedure Call Protocol Specification,  RFC 1050,  Sun  Mi-
       crosystems, Inc., USC-ISI.

COLOPHON
       This  page  is  part of release 5.05 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.

                                  2017-09-15                            RPC(3)
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