rpc_socauth_destroyauthnone_createauthunix_createauthunix_create_defaultcallrpcclnt_broadcastclnt_callclnt_controlclnt_createclnt_destroyclnt_freeresclnt_geterrclnt_pcreateerrorclnt_perrnoclnt_perrorclnt_spcreateerrorclnt_sperrnoclnt_sperrorclntraw_createclnttcp_createclntudp_bufcreateclntudp_createclntunix_createget_myaddresspmap_getmapspmap_getportpmap_rmtcallpmap_setpmap_unsetregisterrpcrpc_createerrsvc_destroysvc_fdssvc_fdsetsvc_getargssvc_getcallersvc_getreqsvc_getreqsetsvc_registersvc_runsvc_sendreplysvc_unregistersvcerr_authsvcerr_decodesvcerr_noprocsvcerr_noprogsvcerr_progverssvcerr_systemerrsvcerr_weakauthsvcfd_createsvcunixfd_createsvcraw_createsvcunix_createxdr_accepted_replyxdr_authunix_parmsxdr_callhdrxdr_callmsgxdr_opaque_authxdr_pmapxdr_pmaplistxdr_rejected_replyxdr_replymsgxprt_registerxprt_unregister
- library routines for remote procedure calls
LIBRARY
Lb libc
SYNOPSIS
#include <rpc/rpc.h>
See
Sx DESCRIPTION
for function declarations.
DESCRIPTION
Bf -symbolic
The
svc_ (*);
and
clnt_ (*);
functions described in this page are the old, TS-RPC
interface to the XDR and RPC library, and exist for backward compatibility.
The new interface is described in the pages
referenced from
rpc(3).
Ef
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.
Routines that are used for Secure
RPC ( DES
authentication) are described in
rpc_secure3.
Secure
RPC
can be used only if
DES
encryption is available.
void
auth_destroy (AUTH *auth);
A macro that destroys the authentication information associated with
Fa auth .
Destruction usually involves deallocation of private data
structures.
The use of
Fa auth
is undefined after calling
auth_destroy (.);
AUTH *
authnone_create ();
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
UNIX
authentication information.
The
Fa host
argument
is the name of the machine on which the information was
created;
Fa uid
is the user's user ID;
Fa gid
is the user's current group ID;
Fa len
and
Fa 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 ();
Calls
authunix_create ();
with the appropriate arguments.
int
Fo callrpc
Fa char *host
Fa u_long prognum
Fa u_long versnum
Fa u_long procnum
Fa xdrproc_t inproc
Fa void *in
Fa xdrproc_t outproc
Fa void *out
Fc
Call the remote procedure associated with
Fa prognum ,
Fa versnum ,
and
Fa procnum
on the machine
Fa host .
The
Fa in
argument
is the address of the procedure's argument(s), and
Fa out
is the address of where to place the result(s);
Fa inproc
is used to encode the procedure's arguments, and
Fa outproc
is used to decode the procedure's results.
This routine returns zero if it succeeds, or the value of
Vt 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.
enum clnt_stat
Fo clnt_broadcast
Fa u_long prognum
Fa u_long versnum
Fa u_long procnum
Fa xdrproc_t inproc
Fa char *in
Fa xdrproc_t outproc
Fa char *out
Fa bool_t (*eachresult)(caddr_t, struct sockaddr_in *)
Fc
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:
bool_t
eachresult (caddr_t out struct sockaddr_in *addr);
where
Fa out
is the same as
Fa out
passed to
clnt_broadcast (,);
except that the remote procedure's output is decoded there;
Fa 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.
enum clnt_stat
Fo clnt_call
Fa CLIENT *clnt
Fa u_long procnum
Fa xdrproc_t inproc
Fa char *in
Fa xdrproc_t outproc
Fa char *out
Fa struct timeval tout
Fc
A macro that calls the remote procedure
Fa procnum
associated with the client handle,
Fa clnt ,
which is obtained with an
RPC
client creation routine such as
clnt_create (.);
The
Fa in
argument
is the address of the procedure's argument(s), and
Fa out
is the address of where to place the result(s);
Fa inproc
is used to encode the procedure's arguments, and
Fa outproc
is used to decode the procedure's results;
Fa tout
is the time allowed for results to come back.
void
clnt_destroy (CLIENT *clnt);
A macro that destroys the client's
RPC
handle.
Destruction usually involves deallocation
of private data structures, including
Fa clnt
itself.
Use of
Fa 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.
CLIENT *
clnt_create (char *host u_long prog u_long vers char *proto);
Generic client creation routine.
The
Fa host
argument
identifies the name of the remote host where the server
is located.
The
Fa proto
argument
indicates which kind of transport protocol to use.
The
currently supported values for this field are
Qq Li udp
and
Qq Li tcp .
Default timeouts are set, but can be modified using
clnt_control (.);
Warning: Using
UDP
has its shortcomings.
Since
UDP -basedRPC
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.
bool_t
clnt_control (CLIENT *cl u_int req char *info);
A macro used to change or retrieve various information
about a client object.
The
Fa req
argument
indicates the type of operation, and
Fa info
is a pointer to the information.
For both
UDP
and
TCP
the supported values of
Fa req
and their argument types and what they do are:
CLSET_TIMEOUT Ta
Vt struct timeval Ta set total timeout
CLGET_TIMEOUT Ta
Vt struct timeval Ta get total timeout
Note: if you set the timeout using
clnt_control (,);
the timeout argument passed to
clnt_call ();
will be ignored in all future calls.
CLGET_SERVER_ADDR Ta
Vt struct sockaddr_in Ta get server's address
The following operations are valid for
UDP
only:
CLSET_RETRY_TIMEOUT Ta
Vt struct timeval Ta set the retry timeout
CLGET_RETRY_TIMEOUT Ta
Vt struct timeval Ta get the retry timeout
The retry timeout is the time that
UDP RPC
waits for the server to reply before
retransmitting the request.
A macro that frees any data allocated by the
RPC/XDR
system when it decoded the results of an
RPC
call.
The
Fa out
argument
is the address of the results, and
Fa outproc
is the
XDR
routine describing 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
Fa errp .
void
clnt_pcreateerror (char *s);
prints a message to standard error indicating
why a client
RPC
handle could not be created.
The message is prepended with string
Fa s
and a colon.
A newline is appended at the end of the message.
Used when a
clnt_create (,);
clntraw_create (,);
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
Fa stat .
A newline is appended at the end of the message.
Used after
callrpc (.);
void
clnt_perror (CLIENT *clnt char *s);
Print a message to standard error indicating why an
RPC
call failed;
Fa clnt
is the handle used to do the call.
The message is prepended with string
Fa s
and a colon.
A newline is appended at the end of the message.
Used after
clnt_call (.);
char *
clnt_spcreateerror (char *s);
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.
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
clnt_sperrno ();
function
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 from that supported by
clnt_perrno ();
is to be used.
Note: unlike
clnt_sperror ();
and
clnt_spcreateerror (,);
clnt_sperrno ();
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 (u_long prognum u_long versnum);
This routine creates a toy
RPC
client for the remote program
Fa prognum ,
version
Fa 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 *
Fo clnttcp_create
Fa struct sockaddr_in *addr
Fa u_long prognum
Fa u_long versnum
Fa int *sockp
Fa u_int sendsz
Fa u_int recvsz
Fc
This routine creates an
RPC
client for the remote program
Fa prognum ,
version
Fa versnum ;
the client uses
TCP/IP
as a transport.
The remote program is located at Internet
address
Fa addr .
If
Fa addr->sin_port
is zero, then it is set to the actual port that the remote
program is listening on (the remote
rpcbind(8)
service is consulted for this information).
The
Fa sockp
argument
is a socket; if it is
RPC_ANYSOCK
then this routine opens a new one and sets
Fa sockp .
Since
TCP -basedRPC
uses buffered
I/O
the user may specify the size of the send and receive buffers
with the
Fa sendsz
and
Fa recvsz
arguments;
values of zero choose suitable defaults.
This routine returns
NULL
if it fails.
CLIENT *
Fo clntudp_create
Fa struct sockaddr_in *addr
Fa u_long prognum
Fa u_long versnum
Fa struct timeval wait
Fa int *sockp
Fc
This routine creates an
RPC
client for the remote program
Fa prognum ,
version
Fa versnum ;
the client uses
UDP/IP
as a transport.
The remote program is located at Internet
address
Fa addr .
If
Fa addr->sin_port
is zero, then it is set to actual port that the remote
program is listening on (the remote
rpcbind(8)
service is consulted for this information).
The
Fa sockp
argument
is a socket; if it is
RPC_ANYSOCK
then this routine opens a new one and sets
Fa sockp .
The
UDP
transport resends the call message in intervals of
Fa 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 -basedRPC
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.
CLIENT *
Fo clntudp_bufcreate
Fa struct sockaddr_in *addr
Fa u_long prognum
Fa u_long versnum
Fa struct timeval wait
Fa int *sockp
Fa unsigned int sendsize
Fa unsigned int recosize
Fc
This routine creates an
RPC
client for the remote program
Fa prognum ,
on
Fa versnum ;
the client uses
UDP/IP
as a transport.
The remote program is located at Internet
address
Fa addr .
If
Fa addr->sin_port
is zero, then it is set to actual port that the remote
program is listening on (the remote
rpcbind(8)
service is consulted for this information).
The
Fa sockp
argument
is a socket; if it is
RPC_ANYSOCK
then this routine opens a new one and sets
Fa sockp .
The
UDP
transport resends the call message in intervals of
Fa 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 -basedRPC
messages.
CLIENT *
Fo clntunix_create
Fa struct sockaddr_un *raddr
Fa u_long prognum
Fa u_long versnum
Fa int *sockp
Fa u_int sendsz
Fa u_int recvsz
Fc
This routine creates an
RPC
client for the local
program
Fa prognum ,
version
Fa versnum ;
the client uses
UNIX
sockets as a transport.
The local program is located at the
Fa *raddr .
The
Fa sockp
argument
is a socket; if it is
RPC_ANYSOCK
then this routine opens a new one and sets
Fa sockp .
Since
UNIX
RPC
uses buffered
I/O
the user may specify the size of the send and receive buffers
with the
Fa sendsz
and
Fa recvsz
arguments;
values of zero choose suitable defaults.
This routine returns
NULL
if it fails.
int
get_myaddress (struct sockaddr_in *addr);
Stuff the machine's
IP
address into
Fa 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.
struct pmaplist *
pmap_getmaps (struct sockaddr_in *addr);
A user interface to the
rpcbind(8)
service, which returns a list of the current
RPC
program-to-port mappings
on the host located at
IP
address
Fa addr .
This routine can return
NULL
The command
``rpcinfo -p
''
uses this routine.
u_short
Fo pmap_getport
Fa struct sockaddr_in *addr
Fa u_long prognum
Fa u_long versnum
Fa u_long protocol
Fc
A user interface to the
rpcbind(8)
service, which returns the port number
on which waits a service that supports program number
Fa prognum ,
version
Fa versnum ,
and speaks the transport protocol associated with
Fa protocol .
The value of
Fa 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 contact the remote
rpcbind(8)
service.
In the latter case, the global variable
rpc_createerr
contains the
RPC
status.
enum clnt_stat
Fo pmap_rmtcall
Fa struct sockaddr_in *addr
Fa u_long prognum
Fa u_long versnum
Fa u_long procnum
Fa xdrproc_t inproc
Fa char *in
Fa xdrproc_t outproc
Fa char *out
Fa struct timeval tout
Fa u_long *portp
Fc
A user interface to the
rpcbind(8)
service, which instructs
rpcbind(8)
on the host at
IP
address
Fa addr
to make an
RPC
call on your behalf to a procedure on that host.
The
Fa portp
argument
will be modified to the program's port number if the
procedure
succeeds.
The definitions of other arguments are discussed
in
callrpc ();
and
clnt_call (.);
This procedure should be used for a
``ping''
and nothing
else.
See also
clnt_broadcast (.);
A user interface to the
rpcbind(8)
service, which establishes a mapping between the triple
(Fa prognum , versnum , protocol
)
and
Fa port
on the machine's
rpcbind(8)
service.
The value of
Fa protocol
is most likely
IPPROTO_UDP
or
IPPROTO_TCP
This routine returns one if it succeeds, zero otherwise.
Automatically done by
svc_register (.);
A user interface to the
rpcbind(8)
service, which destroys all mapping between the triple
(Fa prognum , versnum ,
)
and
Fa ports
on the machine's
rpcbind(8)
service.
This routine returns one if it succeeds, zero
otherwise.
bool_t
Fo registerrpc
Fa u_long prognum
Fa u_long versnum
Fa u_long procnum
Fa char *(*procname)(void)
Fa xdrproc_t inproc
Fa xdrproc_t outproc
Fc
Register procedure
Fa procname
with the
RPC
service package.
If a request arrives for program
Fa prognum ,
version
Fa versnum ,
and procedure
Fa procnum ,
Fa procname
is called with a pointer to its argument(s);
Fa progname
should return a pointer to its static result(s);
Fa inproc
is used to decode the arguments while
Fa 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.
Vt 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_pcreateerror ();
to print the reason why.
bool_t
svc_destroy (SVCXPRT * xprt);
A macro that destroys the
RPC
service transport handle,
Fa xprt .
Destruction usually involves deallocation
of private data structures, including
Fa xprt
itself.
Use of
Fa xprt
is undefined after calling this routine.
Vt fd_set svc_fdset ;
A global variable reflecting the
RPC
service side's
read file descriptor bit mask; it is suitable as a template argument
to the
select(2)
system call.
This is only of interest
if a service implementor does not call
svc_run (,);
but rather does his own asynchronous event processing.
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.
As well, 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.
Vt int svc_fds ;
Similar to
svc_fdset
but limited to 32 descriptors.
This
interface is obsoleted by
svc_fdset
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.
A macro that decodes the arguments of an
RPC
request
associated with the
RPC
service transport handle,
Fa xprt .
The
Fa in
argument
is the address where the arguments will be placed;
Fa 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,
Fa xprt .
void
svc_getreqset (fd_set *rdfds);
This routine 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);
Fa rdfds
is the resultant read file descriptor bit mask.
The routine returns when all sockets associated with the
value of
Fa rdfds
have been serviced.
void
svc_getreq (int rdfds);
Similar to
svc_getreqset (,);
but limited to 32 descriptors.
This interface is obsoleted by
svc_getreqset (.);
bool_t
Fo svc_register
Fa SVCXPRT *xprt
Fa u_long prognum
Fa u_long versnum
Fa void (*dispatch)(struct svc_req *, SVCXPRT *)
Fa int protocol
Fc
Associates
Fa prognum
and
Fa versnum
with the service dispatch procedure,
dispatch (.);
If
Fa protocol
is zero, the service is not registered with the
rpcbind(8)
service.
If
Fa protocol
is non-zero, then a mapping of the triple
(Fa prognum , versnum , protocol
)
to
Fa xprt->xp_port
is established with the local
rpcbind(8)
service (generally
Fa protocol
is zero,
IPPROTO_UDP
or
IPPROTO_TCP )
The procedure
dispatch ();
has the following form:
The
svc_register ();
routine returns one if it succeeds, and zero otherwise.
svc_run ();
This routine never returns.
It waits for
RPC
requests to arrive, and calls the appropriate service
procedure using
svc_getreq ();
when one arrives.
This procedure is usually waiting for a
select(2)
system call to return.
Called by an
RPC
service's dispatch routine to send the results of a
remote procedure call.
The
Fa xprt
argument
is the request's associated transport handle;
Fa outproc
is the
XDR
routine which is used to encode the results; and
Fa out
is the address of the results.
This routine returns one if it succeeds, zero otherwise.
void
svc_unregister (u_long prognum u_long versnum);
Remove all mapping of the double
(Fa prognum , versnum
)
to dispatch routines, and of the triple
(Fa 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 arguments.
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.
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 routine.
void
svcerr_weakauth (SVCXPRT *xprt);
Called by a service dispatch routine that refuses to perform
a remote procedure call due to insufficient
authentication arguments.
The routine calls
svcerr_auth (xprt AUTH_TOOWEAK .);
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 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.
This routine creates a
TCP/IP -basedRPC
service transport, to which it returns a pointer.
The transport is associated with the socket
Fa 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,
Fa xprt->xp_fd
is the transport's socket descriptor, and
Fa xprt->xp_port
is the transport's port number.
This routine returns
NULL
if it fails.
Since
TCP -basedRPC
uses buffered
I/O
users may specify the size of buffers; values of zero
choose suitable defaults.
This routine creates a
UNIX
RPC
service transport, to which it returns a pointer.
The transport is associated with the socket
Fa sock ,
which may be
RPC_ANYSOCK
in which case a new socket is created.
The
Fa *path
argument
is a variable-length file system pathname of
at most 104 characters.
This file is
not
removed when the socket is closed.
The
unlink(2)
system call must be used to remove the file.
Upon completion,
Fa xprt->xp_fd
is the transport's socket descriptor.
This routine returns
NULL
if it fails.
Since
UNIX
RPC
uses buffered
I/O
users may specify the size of buffers; values of zero
choose suitable defaults.
Create a service on top of any open descriptor.
The
Fa sendsize
and
Fa recvsize
arguments
indicate sizes for the send and receive buffers.
If they are
zero, a reasonable default is chosen.
Create a service on top of any open descriptor.
Typically,
this
descriptor is a connected socket for a stream protocol such
as
TCP
The
Fa sendsize
and
Fa recvsize
arguments
indicate sizes for the send and receive buffers.
If they are
zero, a reasonable default is chosen.
This routine creates a
UDP/IP -basedRPC
service transport, to which it returns a pointer.
The transport is associated with the socket
Fa 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,
Fa xprt->xp_fd
is the transport's socket descriptor, and
Fa 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 -basedRPC
messages.
Used for describing
UNIX
credentials.
This routine is useful for users
who wish to generate these credentials without using the
RPC
authentication package.
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.
Vt struct pmap ;
bool_t
xdr_pmap (XDR *xdrs struct pmap *regs);
Used for describing arguments to various
rpcbind(8)
procedures, externally.
This routine is useful for users who wish to generate
these arguments without using the
pmap_ (*);
interface.
Used for describing a list of port mappings, externally.
This routine is useful for users who wish to generate
these arguments without using the
pmap_ (*);
interface.
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 usually 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 usually do not need this routine.