$NetBSD: rpc_soc.3,v 1.2 2000/06/07 13:39:43 simonb Exp $
$FreeBSD: releng/11.0/lib/libc/rpc/rpc_soc.3 241181 2012-10-04 04:15:18Z pfg $
.Dd February 16, 1988 .Dt RPC_SOC 3 .Os .Sh NAME .Nm rpc_soc , .Nm auth_destroy , .Nm authnone_create , .Nm authunix_create , .Nm authunix_create_default , .Nm callrpc , .Nm clnt_broadcast , .Nm clnt_call , .Nm clnt_control , .Nm clnt_create , .Nm clnt_destroy , .Nm clnt_freeres , .Nm clnt_geterr , .Nm clnt_pcreateerror , .Nm clnt_perrno , .Nm clnt_perror , .Nm clnt_spcreateerror , .Nm clnt_sperrno , .Nm clnt_sperror , .Nm clntraw_create , .Nm clnttcp_create , .Nm clntudp_bufcreate , .Nm clntudp_create , .Nm clntunix_create , .Nm get_myaddress , .Nm pmap_getmaps , .Nm pmap_getport , .Nm pmap_rmtcall , .Nm pmap_set , .Nm pmap_unset , .Nm registerrpc , .Nm rpc_createerr , .Nm svc_destroy , .Nm svc_fds , .Nm svc_fdset , .Nm svc_getargs , .Nm svc_getcaller , .Nm svc_getreq , .Nm svc_getreqset , .Nm svc_register , .Nm svc_run , .Nm svc_sendreply , .Nm svc_unregister , .Nm svcerr_auth , .Nm svcerr_decode , .Nm svcerr_noproc , .Nm svcerr_noprog , .Nm svcerr_progvers , .Nm svcerr_systemerr , .Nm svcerr_weakauth , .Nm svcfd_create , .Nm svcunixfd_create , .Nm svcraw_create , .Nm svcunix_create , .Nm xdr_accepted_reply , .Nm xdr_authunix_parms , .Nm xdr_callhdr , .Nm xdr_callmsg , .Nm xdr_opaque_auth , .Nm xdr_pmap , .Nm xdr_pmaplist , .Nm xdr_rejected_reply , .Nm xdr_replymsg , .Nm xprt_register , .Nm xprt_unregister .Nd "library routines for remote procedure calls" .Sh LIBRARY .Lb libc .Sh SYNOPSIS n rpc/rpc.h
p See .Sx DESCRIPTION for function declarations. .Sh DESCRIPTION f -symbolic The .Fn svc_* and .Fn 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 .Xr rpc 3 . .Ef
p 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.
p Routines that are used for Secure .Tn RPC ( DES authentication) are described in .Xr rpc_secure 3 . Secure .Tn RPC can be used only if .Tn DES encryption is available.
p l -tag -width indent -compact t Xo .Ft void .Xc t Xo .Fn auth_destroy "AUTH *auth" .Xc
p 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 .Fn auth_destroy .
p t Xo .Ft "AUTH *" .Xc t Xo .Fn authnone_create .Xc
p Create and return an .Tn RPC authentication handle that passes nonusable authentication information with each remote procedure call. This is the default authentication used by .Tn RPC .
p t Xo .Ft "AUTH *" .Xc t Xo .Fn authunix_create "char *host" "u_int uid" "u_int gid" "int len" "u_int *aup_gids" .Xc
p Create and return an .Tn RPC authentication handle that contains x 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.
p t Xo .Ft "AUTH *" .Xc t Xo .Fn authunix_create_default .Xc
p Calls .Fn authunix_create with the appropriate arguments.
p t Xo .Ft 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 .Xc
p 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 .Fn clnt_perrno is handy for translating failure statuses into messages.
p Warning: calling remote procedures with this routine uses .Tn UDP/IP as a transport; see .Fn clntudp_create for restrictions. You do not have control of timeouts or authentication using this routine.
p t Xo .Ft "enum clnt_stat" .Xc t Xo .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 .Xc
p Like .Fn callrpc , except the call message is broadcast to all locally connected broadcast nets. Each time it receives a response, this routine calls .Fn eachresult , whose form is: d -ragged -offset indent .Ft bool_t .Fn eachresult "caddr_t out" "struct sockaddr_in *addr" .Ed
p where .Fa out is the same as .Fa out passed to .Fn 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 .Fn eachresult returns zero, .Fn clnt_broadcast waits for more replies; otherwise it returns with appropriate status.
p Warning: broadcast sockets are limited in size to the maximum transfer unit of the data link. For ethernet, this value is 1500 bytes.
p t Xo .Ft "enum clnt_stat" .Xc t Xo .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 .Xc
p A macro that calls the remote procedure .Fa procnum associated with the client handle, .Fa clnt , which is obtained with an .Tn RPC client creation routine such as .Fn 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.
p t Xo .Ft void .Fn clnt_destroy "CLIENT *clnt" .Xc
p A macro that destroys the client's .Tn RPC handle. Destruction usually involves deallocation of private data structures, including .Fa clnt itself. Use of .Fa clnt is undefined after calling .Fn clnt_destroy . If the .Tn RPC library opened the associated socket, it will close it also. Otherwise, the socket remains open.
p t Xo .Ft CLIENT * .Xc t Xo .Fn clnt_create "char *host" "u_long prog" "u_long vers" "char *proto" .Xc
p 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 .Fn clnt_control .
p Warning: Using .Tn UDP has its shortcomings. Since .Tn UDP Ns -based .Tn 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.
p t Xo .Ft bool_t .Xc t Xo .Fn clnt_control "CLIENT *cl" "u_int req" "char *info" .Xc
p 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 .Tn UDP and .Tn TCP , the supported values of .Fa req and their argument types and what they do are: l -column "CLSET_RETRY_TIMEOUT" "struct sockaddr_in" t Dv CLSET_TIMEOUT Ta .Vt "struct timeval" Ta "set total timeout" t Dv CLGET_TIMEOUT Ta .Vt "struct timeval" Ta "get total timeout" .El
p Note: if you set the timeout using .Fn clnt_control , the timeout argument passed to .Fn clnt_call will be ignored in all future calls. l -column "CLSET_RETRY_TIMEOUT" "struct sockaddr_in" t Dv CLGET_SERVER_ADDR Ta .Vt "struct sockaddr_in" Ta "get server's address" .El
p The following operations are valid for .Tn UDP only: l -column "CLSET_RETRY_TIMEOUT" "struct sockaddr_in" t Dv CLSET_RETRY_TIMEOUT Ta .Vt "struct timeval" Ta "set the retry timeout" t Dv CLGET_RETRY_TIMEOUT Ta .Vt "struct timeval" Ta "get the retry timeout" .El
p The retry timeout is the time that .Tn "UDP RPC" waits for the server to reply before retransmitting the request.
p t Xo .Ft bool_t .Fn clnt_freeres "CLIENT *clnt" "xdrproc_t outproc" "char *out" .Xc
p A macro that frees any data allocated by the .Tn RPC/XDR system when it decoded the results of an .Tn RPC call. The .Fa out argument is the address of the results, and .Fa outproc is the .Tn XDR routine describing the results. This routine returns one if the results were successfully freed, and zero otherwise.
p t Xo .Ft void .Xc t Xo .Fn clnt_geterr "CLIENT *clnt" "struct rpc_err *errp" .Xc
p A macro that copies the error structure out of the client handle to the structure at address .Fa errp .
p t Xo .Ft void .Xc t Xo .Fn clnt_pcreateerror "char *s" .Xc
p prints a message to standard error indicating why a client .Tn 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 .Fn clnt_create , .Fn clntraw_create , .Fn clnttcp_create , or .Fn clntudp_create call fails.
p t Xo .Ft void .Xc t Xo .Fn clnt_perrno "enum clnt_stat stat" .Xc
p 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 .Fn callrpc .
p t Xo .Ft void .Fn clnt_perror "CLIENT *clnt" "char *s" .Xc
p Print a message to standard error indicating why an .Tn 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 .Fn clnt_call .
p t Xo .Ft "char *" .Xc t Xo .Fn clnt_spcreateerror "char *s" .Xc
p Like .Fn clnt_pcreateerror , except that it returns a string instead of printing to the standard error.
p Bugs: returns pointer to static data that is overwritten on each call.
p t Xo .Ft "char *" .Xc t Xo .Fn clnt_sperrno "enum clnt_stat stat" .Xc
p Take the same arguments as .Fn clnt_perrno , but instead of sending a message to the standard error indicating why an .Tn RPC call failed, return a pointer to a string which contains the message.
p The .Fn clnt_sperrno function is used instead of .Fn 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 .Fn printf , or if a message format different from that supported by .Fn clnt_perrno is to be used.
p Note: unlike .Fn clnt_sperror and .Fn clnt_spcreateerror , .Fn clnt_sperrno returns pointer to static data, but the result will not get overwritten on each call.
p t Xo .Ft "char *" .Xc t Xo .Fn clnt_sperror "CLIENT *rpch" "char *s" .Xc
p Like .Fn clnt_perror , except that (like .Fn clnt_sperrno ) it returns a string instead of printing to standard error.
p Bugs: returns pointer to static data that is overwritten on each call.
p t Xo .Ft "CLIENT *" .Xc t Xo .Fn clntraw_create "u_long prognum" "u_long versnum" .Xc
p This routine creates a toy .Tn 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 .Tn RPC server should live in the same address space; see .Fn svcraw_create . This allows simulation of .Tn RPC and acquisition of .Tn RPC overheads, such as round trip times, without any kernel interference. This routine returns .Dv NULL if it fails.
p t Xo .Ft "CLIENT *" .Xc t Xo .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 .Xc
p This routine creates an .Tn RPC client for the remote program .Fa prognum , version .Fa versnum ; the client uses .Tn 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 .Xr rpcbind 8 service is consulted for this information). The .Fa sockp argument is a socket; if it is .Dv RPC_ANYSOCK , then this routine opens a new one and sets .Fa sockp . Since .Tn TCP Ns -based .Tn RPC uses buffered .Tn 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 .Dv NULL if it fails.
p t Xo .Ft "CLIENT *" .Xc t Xo .Fo clntudp_create .Fa "struct sockaddr_in *addr" .Fa "u_long prognum" .Fa "u_long versnum" .Fa "struct timeval wait" .Fa "int *sockp" .Fc .Xc
p This routine creates an .Tn RPC client for the remote program .Fa prognum , version .Fa versnum ; the client uses .Tn 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 .Xr rpcbind 8 service is consulted for this information). The .Fa sockp argument is a socket; if it is .Dv RPC_ANYSOCK , then this routine opens a new one and sets .Fa sockp . The .Tn 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 .Fn clnt_call .
p Warning: since .Tn UDP Ns -based .Tn 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.
p t Xo .Ft "CLIENT *" .Xc t Xo .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 .Xc
p This routine creates an .Tn RPC client for the remote program .Fa prognum , on .Fa versnum ; the client uses .Tn 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 .Xr rpcbind 8 service is consulted for this information). The .Fa sockp argument is a socket; if it is .Dv RPC_ANYSOCK , then this routine opens a new one and sets .Fa sockp . The .Tn 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 .Fn clnt_call .
p This allows the user to specify the maximum packet size for sending and receiving .Tn UDP Ns -based .Tn RPC messages.
p t Xo .Ft "CLIENT *" .Xc t Xo .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 .Xc
p This routine creates an .Tn RPC client for the local program .Fa prognum , version .Fa versnum ; the client uses x Ns -domain sockets as a transport. The local program is located at the .Fa *raddr . The .Fa sockp argument is a socket; if it is .Dv RPC_ANYSOCK , then this routine opens a new one and sets .Fa sockp . Since x Ns -based .Tn RPC uses buffered .Tn 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 .Dv NULL if it fails.
p t Xo .Ft int .Xc t Xo .Fn get_myaddress "struct sockaddr_in *addr" .Xc
p Stuff the machine's .Tn IP address into .Fa addr , without consulting the library routines that deal with
a /etc/hosts . The port number is always set to .Fn htons PMAPPORT . Returns zero on success, non-zero on failure.
p t Xo .Ft "struct pmaplist *" .Xc t Xo .Fn pmap_getmaps "struct sockaddr_in *addr" .Xc
p A user interface to the .Xr rpcbind 8 service, which returns a list of the current .Tn RPC program-to-port mappings on the host located at .Tn IP address .Fa addr . This routine can return .Dv NULL . The command .Dq Nm rpcinfo Fl p uses this routine.
p t Xo .Ft u_short .Xc t Xo .Fo pmap_getport .Fa "struct sockaddr_in *addr" .Fa "u_long prognum" .Fa "u_long versnum" .Fa "u_long protocol" .Fc .Xc
p A user interface to the .Xr 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 .Dv IPPROTO_UDP or .Dv IPPROTO_TCP . A return value of zero means that the mapping does not exist or that the .Tn RPC system failed to contact the remote .Xr rpcbind 8 service. In the latter case, the global variable .Va rpc_createerr contains the .Tn RPC status.
p t Xo .Ft "enum clnt_stat" .Xc t Xo .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 .Xc
p A user interface to the .Xr rpcbind 8 service, which instructs .Xr rpcbind 8 on the host at .Tn IP address .Fa addr to make an .Tn 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 .Fn callrpc and .Fn clnt_call . This procedure should be used for a .Dq ping and nothing else. See also .Fn clnt_broadcast .
p t Xo .Ft bool_t .Fn pmap_set "u_long prognum" "u_long versnum" "u_long protocol" "u_short port" .Xc
p A user interface to the .Xr rpcbind 8 service, which establishes a mapping between the triple
q Fa prognum , versnum , protocol and .Fa port on the machine's .Xr rpcbind 8 service. The value of .Fa protocol is most likely .Dv IPPROTO_UDP or .Dv IPPROTO_TCP . This routine returns one if it succeeds, zero otherwise. Automatically done by .Fn svc_register .
p t Xo .Ft bool_t .Fn pmap_unset "u_long prognum" "u_long versnum" .Xc
p A user interface to the .Xr rpcbind 8 service, which destroys all mapping between the triple
q Fa prognum , versnum , * and .Fa ports on the machine's .Xr rpcbind 8 service. This routine returns one if it succeeds, zero otherwise.
p t Xo .Ft 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 .Xc
p Register procedure .Fa procname with the .Tn 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.
p Warning: remote procedures registered in this form are accessed using the .Tn UDP/IP transport; see .Fn svcudp_create for restrictions.
p t Xo .Vt "struct rpc_createerr" rpc_createerr ; .Xc
p A global variable whose value is set by any .Tn RPC client creation routine that does not succeed. Use the routine .Fn clnt_pcreateerror to print the reason why.
p t Xo .Ft bool_t .Fn svc_destroy "SVCXPRT * xprt" .Xc
p A macro that destroys the .Tn 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.
p t Xo .Vt fd_set svc_fdset ; .Xc
p A global variable reflecting the .Tn RPC service side's read file descriptor bit mask; it is suitable as a template argument to the .Xr select 2 system call. This is only of interest if a service implementor does not call .Fn svc_run , but rather does his own asynchronous event processing. This variable is read-only (do not pass its address to .Xr select 2 ! ) , yet it may change after calls to .Fn svc_getreqset or any creation routines. As well, note that if the process has descriptor limits which are extended beyond .Dv FD_SETSIZE , this variable will only be usable for the first .Dv FD_SETSIZE descriptors.
p t Xo .Vt int svc_fds ; .Xc
p Similar to .Va svc_fdset , but limited to 32 descriptors. This interface is obsoleted by .Va svc_fdset .
p t Xo .Ft bool_t .Fn svc_freeargs "SVCXPRT *xprt" "xdrproc_t inproc" "char *in" .Xc
p A macro that frees any data allocated by the .Tn RPC/XDR system when it decoded the arguments to a service procedure using .Fn svc_getargs . This routine returns 1 if the results were successfully freed, and zero otherwise.
p t Xo .Ft bool_t .Fn svc_getargs "SVCXPRT *xprt" "xdrproc_t inproc" "char *in" .Xc
p A macro that decodes the arguments of an .Tn RPC request associated with the .Tn RPC service transport handle, .Fa xprt . The .Fa in argument is the address where the arguments will be placed; .Fa inproc is the .Tn XDR routine used to decode the arguments. This routine returns one if decoding succeeds, and zero otherwise.
p t Xo .Ft "struct sockaddr_in *" .Xc t Xo .Fn svc_getcaller "SVCXPRT *xprt" .Xc
p The approved way of getting the network address of the caller of a procedure associated with the .Tn RPC service transport handle, .Fa xprt .
p t Xo .Ft void .Fn svc_getreqset "fd_set *rdfds" .Xc
p This routine is only of interest if a service implementor does not call .Fn svc_run , but instead implements custom asynchronous event processing. It is called when the .Xr select 2 system call has determined that an .Tn RPC request has arrived on some .Tn 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.
p t Xo .Ft void .Fn svc_getreq "int rdfds" .Xc
p Similar to .Fn svc_getreqset , but limited to 32 descriptors. This interface is obsoleted by .Fn svc_getreqset .
p t Xo .Ft 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 .Xc
p Associates .Fa prognum and .Fa versnum with the service dispatch procedure, .Fn dispatch . If .Fa protocol is zero, the service is not registered with the .Xr rpcbind 8 service. If .Fa protocol is non-zero, then a mapping of the triple
q Fa prognum , versnum , protocol to .Fa xprt->xp_port is established with the local .Xr rpcbind 8 service (generally .Fa protocol is zero, .Dv IPPROTO_UDP or .Dv IPPROTO_TCP ) . The procedure .Fn dispatch has the following form: d -ragged -offset indent .Ft bool_t .Fn dispatch "struct svc_req *request" "SVCXPRT *xprt" .Ed
p The .Fn svc_register routine returns one if it succeeds, and zero otherwise.
p t Xo .Fn svc_run .Xc
p This routine never returns. It waits for .Tn RPC requests to arrive, and calls the appropriate service procedure using .Fn svc_getreq when one arrives. This procedure is usually waiting for a .Xr select 2 system call to return.
p t Xo .Ft bool_t .Fn svc_sendreply "SVCXPRT *xprt" "xdrproc_t outproc" "char *out" .Xc
p Called by an .Tn 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 .Tn 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.
p t Xo .Ft void .Xc t Xo .Fn svc_unregister "u_long prognum" "u_long versnum" .Xc
p Remove all mapping of the double
q Fa prognum , versnum to dispatch routines, and of the triple
q Fa prognum , versnum , * to port number.
p t Xo .Ft void .Xc t Xo .Fn svcerr_auth "SVCXPRT *xprt" "enum auth_stat why" .Xc
p Called by a service dispatch routine that refuses to perform a remote procedure call due to an authentication error.
p t Xo .Ft void .Xc t Xo .Fn svcerr_decode "SVCXPRT *xprt" .Xc
p Called by a service dispatch routine that cannot successfully decode its arguments. See also .Fn svc_getargs .
p t Xo .Ft void .Xc t Xo .Fn svcerr_noproc "SVCXPRT *xprt" .Xc
p Called by a service dispatch routine that does not implement the procedure number that the caller requests.
p t Xo .Ft void .Xc t Xo .Fn svcerr_noprog "SVCXPRT *xprt" .Xc
p Called when the desired program is not registered with the .Tn RPC package. Service implementors usually do not need this routine.
p t Xo .Ft void .Xc t Xo .Fn svcerr_progvers "SVCXPRT *xprt" "u_long low_vers" "u_long high_vers" .Xc
p Called when the desired version of a program is not registered with the .Tn RPC package. Service implementors usually do not need this routine.
p t Xo .Ft void .Xc t Xo .Fn svcerr_systemerr "SVCXPRT *xprt" .Xc
p 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.
p t Xo .Ft void .Xc t Xo .Fn svcerr_weakauth "SVCXPRT *xprt" .Xc
p Called by a service dispatch routine that refuses to perform a remote procedure call due to insufficient authentication arguments. The routine calls .Fn svcerr_auth xprt AUTH_TOOWEAK .
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svcraw_create void .Xc
p This routine creates a toy .Tn RPC service transport, to which it returns a pointer. The transport is really a buffer within the process's address space, so the corresponding .Tn RPC client should live in the same address space; see .Fn clntraw_create . This routine allows simulation of .Tn RPC and acquisition of .Tn RPC overheads (such as round trip times), without any kernel interference. This routine returns .Dv NULL if it fails.
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svctcp_create "int sock" "u_int send_buf_size" "u_int recv_buf_size" .Xc
p This routine creates a .Tn TCP/IP Ns -based .Tn RPC service transport, to which it returns a pointer. The transport is associated with the socket .Fa sock , which may be .Dv RPC_ANYSOCK , in which case a new socket is created. If the socket is not bound to a local .Tn 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 .Dv NULL if it fails. Since .Tn TCP Ns -based .Tn RPC uses buffered .Tn I/O , users may specify the size of buffers; values of zero choose suitable defaults.
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svcunix_create "int sock" "u_int send_buf_size" "u_int recv_buf_size" "char *path" .Xc
p This routine creates a x Ns -based .Tn RPC service transport, to which it returns a pointer. The transport is associated with the socket .Fa sock , which may be .Dv 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 .Em not removed when the socket is closed. The .Xr 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 .Dv NULL if it fails. Since x Ns -based .Tn RPC uses buffered .Tn I/O , users may specify the size of buffers; values of zero choose suitable defaults.
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svcunixfd_create "int fd" "u_int sendsize" "u_int recvsize" .Xc
p 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.
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svcfd_create "int fd" "u_int sendsize" "u_int recvsize" .Xc
p Create a service on top of any open descriptor. Typically, this descriptor is a connected socket for a stream protocol such as .Tn 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.
p t Xo .Ft "SVCXPRT *" .Xc t Xo .Fn svcudp_bufcreate "int sock" "u_int sendsize" "u_int recvsize" .Xc
p This routine creates a .Tn UDP/IP Ns -based .Tn RPC service transport, to which it returns a pointer. The transport is associated with the socket .Fa sock , which may be .Dv RPC_ANYSOCK , in which case a new socket is created. If the socket is not bound to a local .Tn 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 .Dv NULL if it fails.
p This allows the user to specify the maximum packet size for sending and receiving .Tn UDP Ns -based .Tn RPC messages.
p t Xo .Ft bool_t .Fn xdr_accepted_reply "XDR *xdrs" "struct accepted_reply *ar" .Xc
p Used for encoding .Tn RPC reply messages. This routine is useful for users who wish to generate .Tn RPC Ns -style messages without using the .Tn RPC package.
p t Xo .Ft bool_t .Fn xdr_authunix_parms "XDR *xdrs" "struct authunix_parms *aupp" .Xc
p Used for describing x credentials. This routine is useful for users who wish to generate these credentials without using the .Tn RPC authentication package.
p t Xo .Ft void .Xc t Xo .Ft bool_t .Fn xdr_callhdr "XDR *xdrs" "struct rpc_msg *chdr" .Xc
p Used for describing .Tn RPC call header messages. This routine is useful for users who wish to generate .Tn RPC Ns -style messages without using the .Tn RPC package.
p t Xo .Ft bool_t .Fn xdr_callmsg "XDR *xdrs" "struct rpc_msg *cmsg" .Xc
p Used for describing .Tn RPC call messages. This routine is useful for users who wish to generate .Tn RPC Ns -style messages without using the .Tn RPC package.
p t Xo .Ft bool_t .Fn xdr_opaque_auth "XDR *xdrs" "struct opaque_auth *ap" .Xc
p Used for describing .Tn RPC authentication information messages. This routine is useful for users who wish to generate .Tn RPC Ns -style messages without using the .Tn RPC package.
p t Xo .Vt struct pmap ; .Xc t Xo .Ft bool_t .Fn xdr_pmap "XDR *xdrs" "struct pmap *regs" .Xc
p Used for describing arguments to various .Xr rpcbind 8 procedures, externally. This routine is useful for users who wish to generate these arguments without using the .Fn pmap_* interface.
p t Xo .Ft bool_t .Fn xdr_pmaplist "XDR *xdrs" "struct pmaplist **rp" .Xc
p Used for describing a list of port mappings, externally. This routine is useful for users who wish to generate these arguments without using the .Fn pmap_* interface.
p t Xo .Ft bool_t .Fn xdr_rejected_reply "XDR *xdrs" "struct rejected_reply *rr" .Xc
p Used for describing .Tn RPC reply messages. This routine is useful for users who wish to generate .Tn RPC Ns -style messages without using the .Tn RPC package.
p t Xo .Ft bool_t .Fn xdr_replymsg "XDR *xdrs" "struct rpc_msg *rmsg" .Xc
p Used for describing .Tn RPC reply messages. This routine is useful for users who wish to generate .Tn RPC style messages without using the .Tn RPC package.
p t Xo .Ft void .Xc t Xo .Fn xprt_register "SVCXPRT *xprt" .Xc
p After .Tn RPC service transport handles are created, they should register themselves with the .Tn RPC service package. This routine modifies the global variable .Va svc_fds . Service implementors usually do not need this routine.
p t Xo .Ft void .Xc t Xo .Fn xprt_unregister "SVCXPRT *xprt" .Xc
p Before an .Tn RPC service transport handle is destroyed, it should unregister itself with the .Tn RPC service package. This routine modifies the global variable .Va svc_fds . Service implementors usually do not need this routine. .El .Sh SEE ALSO .Xr rpc_secure 3 , .Xr xdr 3 .Rs .%T "Remote Procedure Calls: Protocol Specification" .Re .Rs .%T "Remote Procedure Call Programming Guide" .Re .Rs .%T "rpcgen Programming Guide" .Re .Rs .%T "RPC: Remote Procedure Call Protocol Specification" .%O RFC1050 .%Q "Sun Microsystems, Inc., USC-ISI" .Re