callrpc, clnt_broadcast, clnt_call, clnt_control,
clnt_create,
clnt_destroy, clnt_freeres, clnt_pcreateerror, clnt_perrno,
clnt_perror,
clnt_spcreateerror, clnt_sperrno, clnt_sperror,
clntraw_create,
clnttcp_create, clntudp_bufcreate, clntudp_create,
clntudp_create,
clnt_geterr, get_myaddress, pmap_getmaps, pmap_getport,
pmap_rmtcall,
pmap_set, pmap_unset, registerrpc, rpc_createerr, svc_fdset,
svc_freeargs, svc_getargs, svc_getcaller, svc_getreq,
svc_getreq_common,
svc_getreq_poll, svc_getreqset, svc_getreqset2,
svc_register,
svc_max_pollfd, svc_pollfd, svc_sendreply, svc_unregister,
svcerr_auth,
svcerr_decode, svcerr_noproc, svcerr_noprog,
svcerr_progvers,
svcerr_systemerr, svcerr_weakauth, svcfd_create,
svctcp_create,
svcudp_bufcreate, xdr_accepted_reply, xdr_authunix_parms,
xdr_callhdr,
xdr_callmsg, xdr_opaque_auth, xdr_pmap, xdr_pmaplist,
xdr_rejected_reply,
xdr_replymsg, xprt_register, xprt_unregister - library routines for remote
procedure calls
#include <rpc/rpc.h>
int
callrpc(char *host, u_long prognum, u_long versnum, u_long
procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char
*out);
enum clnt_stat
clnt_broadcast(u_long prognum, u_long versnum, u_long
procnum,
xdrproc_t inproc, char *in, xdrproc_t outproc, char
*out,
resultproc_t eachresult);
enum clnt_stat
clnt_call(CLIENT *clnt, u_long procnum, xdrproc_t inproc,
char *in,
xdrproc_t outproc, char *out, struct timeval tout);
int
clnt_destroy(CLIENT *clnt);
CLIENT *
clnt_create(char *host, u_long prog, u_long vers, char
*proto);
bool_t
clnt_control(CLIENT *cl, int req, char *info);
int
clnt_freeres(CLIENT *clnt, xdrproc_t outproc, char *out);
void
clnt_geterr(CLIENT *clnt, struct rpc_err *errp);
void
clnt_pcreateerror(char *s);
void
clnt_perrno(enum clnt_stat stat);
int
clnt_perror(CLIENT *clnt, char *s);
char *
clnt_spcreateerror(char *s);
char *
clnt_sperrno(enum clnt_stat stat);
char *
clnt_sperror(CLIENT *rpch, char *s);
CLIENT *
clntraw_create(u_long prognum, u_long versnum);
CLIENT *
clnttcp_create(struct sockaddr_in *addr, u_long prognum,
u_long versnum,
int *sockp, u_int sendsz, u_int recvsz);
CLIENT *
clntudp_create(struct sockaddr_in *addr, u_long prognum,
u_long versnum,
struct timeval wait, int *sockp);
CLIENT *
clntudp_bufcreate(struct sockaddr_in *addr, u_long prognum,
u_long versnum, struct timeval wait, int *sockp,
unsigned int sendsize, unsigned int recosize);
int
get_myaddress(struct sockaddr_in *addr);
struct pmaplist *
pmap_getmaps(struct sockaddr_in *addr);
u_short
pmap_getport(struct sockaddr_in *addr, u_long prognum,
u_long versnum,
u_long protocol);
enum clnt_stat
pmap_rmtcall(struct sockaddr_in *, u_long prog, vers, proc,
xdrproc_t inp, char *in, xdrproc_t outp, char *out,
struct timeval tv, u_long *portp);
int
pmap_set(u_long prognum, u_long versnum, u_int protocol,
u_short port);
int
pmap_unset(u_long prognum, u_long versnum);
int
registerrpc(u_long prognum, u_long versnum, u_long procnum,
char *(*procname)(), xdrproc_t inproc, xdrproc_t
outproc);
struct rpc_createerr rpc_createerr;
int
svc_destroy(SVCXPRT *xprt);
struct pollfd * svc_pollfd;
int svc_max_pollfd;
fd_set svc_fdset;
fd_set *__svc_fdset;
int __svc_fdsetsize;
int svc_fds;
int
svc_freeargs(SVCXPRT *xprt, xdrproc_t inproc, char *in);
int
svc_getargs(SVCXPRT *xprt, xdrproc_t inproc, char *in);
struct sockaddr_in *
svc_getcaller(SVCXPRT *xprt);
int
svc_getreq_common(int fd);
int
svc_getreq_poll(struct pollfd *pfds, const int pollretval);
int
svc_getreqset(fd_set *rdfds);
int
svc_getreqset2(fd_set *rdfds, int width);
int
svc_getreq(int rdfds);
int
svc_register(SVCXPRT *xprt, u_long prognum, u_long versnum,
void (*dispatch)(), u_long protocol);
int
svc_run(void);
int
svc_sendreply(SVCXPRT *xprt, xdrproc_t outproc, char *out);
void
svc_unregister(u_long prognum, u_long versnum);
void
svcerr_auth(SVCXPRT *xprt, enum auth_stat why);
void
svcerr_decode(SVCXPRT *xprt);
void
svcerr_noproc(SVCXPRT *xprt);
void
svcerr_noprog(SVCXPRT *xprt);
void
svcerr_progvers(SVCXPRT *xprt);
void
svcerr_systemerr(SVCXPRT *xprt);
void
svcerr_weakauth(SVCXPRT *xprt);
SVCXPRT *
svcraw_create(void);
SVCXPRT *
svctcp_create(int sock, u_int send_buf_size, u_int
recv_buf_size);
SVCXPRT *
svcfd_create(int fd, u_int sendsize, u_int recvsize);
SVCXPRT *
svcudp_bufcreate(int sock);
bool_t
xdr_accepted_reply(XDR *xdrs, struct accepted_reply *ar);
bool_t
xdr_authunix_parms(XDR *xdrs, struct authunix_parms *aupp);
void
xdr_callhdr(XDR *xdrs, struct rpc_msg *chdr);
int
xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg);
int
xdr_opaque_auth(XDR *xdrs, struct opaque_auth *ap);
int
xdr_pmap(XDR *xdrs, struct pmap *regs);
int
xdr_pmaplist(XDR *xdrs, struct pmaplist **rp);
int
xdr_rejected_reply(XDR *xdrs, struct rejected_reply *rr);
int
xdr_replymsg(XDR *xdrs, struct rpc_msg *rmsg);
void
xprt_register(SVCXPRT *xprt);
void
xprt_unregister(SVCXPRT *xprt);
These routines allow C programs to make procedure calls on
other machines
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.
callrpc() calls 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 results. 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 routine.
clnt_broadcast() is like callrpc(), except the call message
is broadcast
to all locally connected broadcast nets. Each time it receives a response,
this routine calls eachresult, whose form is:
int
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 eachresult 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.
clnt_call() is 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 procedure's results; tout is
the time allowed
for results to come back.
clnt_destroy() is a macro that destroys the client's RPC
handle. Destruction
usually involves deallocation of private data
structures, including
clnt itself. Use of clnt is undefined after calling
clnt_destroy(). If the RPC library opened the associated
socket, it will
close it also. Otherwise, the socket remains open.
clnt_create() is a 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 supported values
for this field are "udp" and "tcp". Default timeouts are
set, but can be
modified using clnt_control().
Warning: Using UDP has its shortcomings. Since UDP-based
RPC messages
can only hold up to 8 Kbytes of encoded data, this transport
cannot be
used for procedures that take large arguments or return huge
results.
clnt_control() is 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
supported 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() is 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
describing the
results. This routine returns one if the results were successfully
freed, and zero otherwise.
clnt_geterr() is a macro that copies the error structure out
of the
client handle to the structure at address errp.
clnt_pcreateerror() prints 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_create(),
clnttcp_create(), or clntudp_create() call fails.
clnt_perrno() prints a message to standard error corresponding to the
condition indicated by stat. Used after callrpc().
clnt_perror() prints 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().
clnt_spcreateerror() is like clnt_pcreateerror(), except
that it returns
a string instead of printing to the standard error.
Bugs: returns pointer to static data that is overwritten on
each call.
clnt_sperrno() takes the same arguments as clnt_perrno(),
but instead of
sending a message to the standard error indicating why an
RPC call
failed, returns a pointer to a string which contains the
message. Unlike
clnt_perror(), it does not append a NEWLINE to the end of
the message.
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(), or if a message format different than that supported by
clnt_perrno() is to be used.
Note: unlike clnt_sperror() and clnt_spcreaterror(),
clnt_sperrno() returns
a pointer to static data, but the result will not get
overwritten
on each call.
clnt_sperror() is 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.
clntraw_create() is a routine which 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.
clnttcp_create() is a routine which 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(8) 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 defaults. This routine returns NULL if
it fails.
clntudp_create() is a routine which 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(8) 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.
get_myaddress() stuffs 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). Returns zero on success,
non-zero on
failure.
pmap_getmaps() is a function interface to the portmap(8)
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.
pmap_getport() is a user interface to the portmap(8) service, which returns
the port number on which waits a service that supports
program number
prognum, version versnum, and speaks the transport protocol associated
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 failured to contact the remote
portmap(8) service.
In the latter case, the global variable
rpc_createerr() contains
the RPC status.
pmap_rmtcall() is a user interface to the portmap(8) service, which instructs
portmap(8) on the host at IP address *addr to make
an RPC call on
your behalf 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().
pmap_set() is a user interface to the portmap(8) service,
which establishes
a mapping between the triple [prognum, versnum,
protocol] and port
on the machine's portmap(8) 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_register().
pmap_unset() is a user interface to the portmap(8) service,
which destroys
all mapping between the triple [prognum, versnum, *]
and ports on
the machine's portmap(8) service. This routine returns one
if it succeeds,
zero otherwise.
registerrpc() will register a procedure procname with the
RPC service
package. If a request arrives for program prognum, version
versnum, and
procedure procnum, procname is called with a pointer to its
parameter(s);
procname should return a pointer to its static result(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 restrictions.
rpc_createerr is a global variable whose value is set by any
RPC client
creation routine that does not succeed. Use the routine
clnt_pcreateerror() to print the reason why.
svc_destroy() is a macro that destroys the RPC service
transport handle,
xprt. Destruction usually involves deallocation of private
data structures,
including xprt itself. Use of xprt is undefined after calling
this routine.
svc_pollfd is a global variable reflecting the RPC service
side's read
file descriptor array. This variable is only of interest if
service implementors
do not call svc_run(), but rather do their own
asynchronous
event processing. This variable is read-only, and it may
change after
calls to svc_getreq_poll() or any creation routines. Do not
pass it directly
to poll(2)! Instead, make a copy and pass that instead.
svc_max_pollfd is a global variable containing the maximum
length of the
svc_pollfd array. svc_max_pollfd is not a hard limit; it
will grow automatically
as needed. This variable is read-only, and it may
change after
calls to svc_getreq_poll() or any creation routines. The
purpose of
svc_max_pollfd is to allow a service implementor to make a
copy of
svc_pollfd that may in turn be passed to poll(2).
__svc_fdset and __svc_fdsetsize are global variables reflecting the RPC
service side's read file descriptor bit mask.
__svc_fdsetsize is a count
of the number of checkable bits in __svc_fdset, and can expand to the
full size that select(2) supports, hence exceeding
FD_SETSIZE if required.
These variables are only of interest if service implementors do
not call svc_run(), but rather do their own asynchronous
event processing.
This variable is read-only, and it may change after
calls to
svc_getreqset() or any creation routines. Do not pass its
address to
select(2)! Instead, pass the address of a copy. These
variables are
considered obsolete; new programs should use svc_pollfd and
svc_max_pollfd instead.
svc_fdset is similar to __svc_fdset but limited to
FD_SETSIZE descriptors.
This is only of interest if service implementors do
not call
svc_run(), but rather do their own asynchronous event processing. This
variable is read-only, and it may change after calls to
svc_getreqset()
or any creation routines. Do not pass it directly to select(2)! Instead,
make a copy and pass that instead.
Additionally, note that if the process has descriptor limits
which are
extended beyond FD_SETSIZE, this variable will only be usable for the
first FD_SETSIZE descriptors. This variable is considered
obsolete; new
programs should use svc_pollfd which does not have this limit.
svc_fds is similar to svc_fedset, but limited to 32 descriptors. This
interface is obsoleted by svc_fdset and is included for
source compatibility
only.
svc_freeargs() is 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
successfully
freed, and zero otherwise.
svc_getargs() is 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.
svc_getcaller() is the approved way of getting the network
address of the
caller of a procedure associated with the RPC service transport handle,
xprt.
svc_getreq_common() is called to handle a request on the
given socket.
It is used internally by svc_getreq_poll(), svc_getreqset(),
svc_getreqset2(), and svc_getreq().
svc_getreq_poll() is a routine which is only of interest if
a service implementor
does not call svc_run(), but instead implements
custom asynchronous
event processing. It is called when the poll(2)
system call has
determined that an RPC request has arrived on some RPC
socket(s);
pollretval is the value returned by poll(2) and pfds is the
array of
pollfd structures passed to poll(2). The routine returns
when all sockets
described by pollfd have been serviced.
svc_getreqset() is a routine which is only of interest 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.
svc_getreqset2() is a non-standard routine which is only of
interest 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. This interface is non-portable, but provided
for applications
which need to deal with large fd_set sizes.
svc_getreq() is similar to svc_getreqset, but limited to 32
descriptors.
This interface is obsoleted by svc_getreq_poll and
svc_getreqset.
svc_register() associates prognum and versnum with the service dispatch
procedure, dispatch. If protocol is zero, the service is
not registered
with the portmap(8) service. If protocol is non-zero, then
a mapping of
the triple [prognum, versnum, protocol] to xprt->xp_port is
established
with the local portmap(8) service (generally protocol is zero,
IPPROTO_UDP or IPPROTO_TCP). The procedure dispatch has the
following
form: int dispatch(struct svc_req *request, SVCXPRT *xprt)
The
svc_register() routine returns one if it succeeds, and zero
otherwise.
svc_run() never returns. It waits for RPC requests to arrive, and calls
the appropriate service procedure using svc_getreq_poll()
when one arrives.
This procedure is usually waiting for a poll(2) system call to
return.
svc_sendreply() is 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
results. This
routine returns one if it succeeds, zero otherwise.
svc_unregister() removes all mapping of the double [prognum,
versnum] to
dispatch routines, and of the triple [prognum, versnum, *]
to port number.
svcerr_auth() is called by a service dispatch routine that
refuses to
perform a remote procedure call due to an authentication error.
svcerr_decode() is called by a service dispatch routine that
cannot successfully
decode its parameters. See also svc_getargs().
svcerr_noproc() is called by a service dispatch routine that
does not implement
the procedure number that the caller requests.
svcerr_noprog() is called when the desired program is not
registered with
the RPC package. Service implementors usually do not need
this routine.
svcerr_progvers() is called when the desired version of a
program is not
registered with the RPC package. Service implementors usually do not
need this routine.
svcerr_systemerr() is 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 routine.
svcerr_weakauth() is called by a service dispatch routine
that refuses to
perform a remote procedure call due to insufficient authentication parameters.
The routine calls svcerr_auth(xprt, AUTH_TOOWEAK).
svcraw_create() is a routine which 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 routine 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.
svctcp_create() is a routine which 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.
svcfd_create() will create a service on top of any open descriptor. Typically,
this 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.
svcudp_bufcreate() is a routine which 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.
xdr_accepted_reply() is used for encoding RPC reply messages. This routine
is useful for users who wish to generate RPC-style messages without
using the RPC package.
xdr_authunix_parms() is used for describing UNIX credentials. This routine
is useful for users who wish to generate these credentials without
using the RPC authentication package.
xdr_callhdr() is 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.
xdr_callmsg() is used for describing RPC call messages.
This routine is
useful for users who wish to generate RPC-style messages
without using
the RPC package.
xdr_opaque_auth() is used for describing RPC authentication
information
messages. This routine is useful for users who wish to generate RPCstyle
messages without using the RPC package.
xdr_pmap() is used for describing parameters to various
portmap(8) procedures,
externally. This routine is useful for users who
wish to generate
these parameters without using the pmap interface.
xdr_pmaplist() is used for describing a list of port mappings, externally.
This routine is useful for users who wish to generate
these parameters
without using the pmap interface.
xdr_rejected_reply() is used for describing RPC reply messages. This
routine is useful for users who wish to generate RPC-style
messages without
using the RPC package.
xdr_replymsg() is used for describing RPC reply messages.
This routine
is useful for users who wish to generate RPC style messages
without using
the RPC package.
xprt_register() is used to register transport handles. After RPC service
transport handles are created, they should register themselves with the
RPC service package. This routine modifies the global variables
svc_pollfd, svc_fdset, __svc_fdset and may modify
svc_max_pollfd and
__svc_fdsetsize. Service implementors usually do not need
this routine.
xprt_unregister() is used to unregister a transport handle.
Before an
RPC service transport handle is destroyed, it should unregister itself
with the RPC service package. This routine modifies the
global variable
svc_pollfd, svc_fdset, and __svc_fdset. Service implementors usually do
not need this routine.
rpcgen(1), poll(2), select(2), getrpcent(3), getrpcport(3),
rpcauth(3),
xdr(3), rpc(5), portmap(8)
The following manuals:
Sun Microsystems, Inc., Remote Procedure Calls: Protocol
Specification.
Sun Microsystems, Inc., Remote Procedure Call Programming
Guide.
Sun Microsystems, Inc., rpcgen Programming Guide.
Sun Microsystems, Inc., RPC: Remote Procedure Call Protocol
Specification.
Sun Microsystems, Inc., RFC 1057, June 1988.
OpenBSD 3.6 February 16, 1988
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