/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ #pragma ident "%Z%%M% %I% %E% SMI" /* * clnt.h - Client side remote procedure call interface. * * Copyright (C) 1984, Sun Microsystems, Inc. */ #ifndef _rpc_clnt_h #define _rpc_clnt_h /* * Rpc calls return an enum clnt_stat. This should be looked at more, * since each implementation is required to live with this (implementation * independent) list of errors. */ enum clnt_stat { RPC_SUCCESS=0, /* call succeeded */ /* * local errors */ RPC_CANTENCODEARGS=1, /* can't encode arguments */ RPC_CANTDECODERES=2, /* can't decode results */ RPC_CANTSEND=3, /* failure in sending call */ RPC_CANTRECV=4, /* failure in receiving result */ RPC_TIMEDOUT=5, /* call timed out */ RPC_INTR=18, /* call interrupted */ /* * remote errors */ RPC_VERSMISMATCH=6, /* rpc versions not compatible */ RPC_AUTHERROR=7, /* authentication error */ RPC_PROGUNAVAIL=8, /* program not available */ RPC_PROGVERSMISMATCH=9, /* program version mismatched */ RPC_PROCUNAVAIL=10, /* procedure unavailable */ RPC_CANTDECODEARGS=11, /* decode arguments error */ RPC_SYSTEMERROR=12, /* generic "other problem" */ /* * callrpc & clnt_create errors */ RPC_UNKNOWNHOST=13, /* unknown host name */ RPC_UNKNOWNPROTO=17, /* unkown protocol */ /* * _ create errors */ RPC_PMAPFAILURE=14, /* the pmapper failed in its call */ RPC_PROGNOTREGISTERED=15, /* remote program is not registered */ /* * unspecified error */ RPC_FAILED=16 }; /* * Error info. */ struct rpc_err { enum clnt_stat re_status; union { int RE_errno; /* realated system error */ enum auth_stat RE_why; /* why the auth error occurred */ struct { u_long low; /* lowest verion supported */ u_long high; /* highest verion supported */ } RE_vers; struct { /* maybe meaningful if RPC_FAILED */ long s1; long s2; } RE_lb; /* life boot & debugging only */ } ru; #define re_errno ru.RE_errno #define re_why ru.RE_why #define re_vers ru.RE_vers #define re_lb ru.RE_lb }; /* * Client rpc handle. * Created by individual implementations, see e.g. rpc_udp.c. * Client is responsible for initializing auth, see e.g. auth_none.c. */ typedef struct { AUTH *cl_auth; /* authenticator */ struct clnt_ops { enum clnt_stat (*cl_call)(); /* call remote procedure */ void (*cl_abort)(); /* abort a call */ void (*cl_geterr)(); /* get specific error code */ bool_t (*cl_freeres)(); /* frees results */ void (*cl_destroy)(); /* destroy this structure */ bool_t (*cl_control)(); /* the ioctl() of rpc */ } *cl_ops; caddr_t cl_private; /* private stuff */ } CLIENT; /* * client side rpc interface ops * * Parameter types are: * */ /* * enum clnt_stat * CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout) * CLIENT *rh; * u_long proc; * xdrproc_t xargs; * caddr_t argsp; * xdrproc_t xres; * caddr_t resp; * struct timeval timeout; */ #define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \ ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs)) #define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \ ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs)) /* * void * CLNT_ABORT(rh); * CLIENT *rh; */ #define CLNT_ABORT(rh) ((*(rh)->cl_ops->cl_abort)(rh)) #define clnt_abort(rh) ((*(rh)->cl_ops->cl_abort)(rh)) /* * struct rpc_err * CLNT_GETERR(rh); * CLIENT *rh; */ #define CLNT_GETERR(rh, errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp)) #define clnt_geterr(rh, errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp)) /* * bool_t * CLNT_FREERES(rh, xres, resp); * CLIENT *rh; * xdrproc_t xres; * caddr_t resp; */ #define CLNT_FREERES(rh, xres, resp) ((*(rh)->cl_ops->cl_freeres)\ (rh, xres, resp)) #define clnt_freeres(rh, xres, resp) ((*(rh)->cl_ops->cl_freeres)\ (rh, xres, resp)) /* * bool_t * CLNT_CONTROL(cl, request, info) * CLIENT *cl; * u_int request; * char *info; */ #define CLNT_CONTROL(cl, rq, in) ((*(cl)->cl_ops->cl_control)(cl, rq, in)) #define clnt_control(cl, rq, in) ((*(cl)->cl_ops->cl_control)(cl, rq, in)) /* * control operations that apply to both udp and tcp transports */ #define CLSET_TIMEOUT 1 /* set timeout (timeval) */ #define CLGET_TIMEOUT 2 /* get timeout (timeval) */ #define CLGET_SERVER_ADDR 3 /* get server's address (sockaddr) */ #define CLGET_FD 6 /* get connections file descriptor */ #define CLSET_FD_CLOSE 8 /* close fd while clnt_destroy */ #define CLSET_FD_NCLOSE 9 /* Do not close fd while clnt_destroy */ /* * udp only control operations */ #define CLSET_RETRY_TIMEOUT 4 /* set retry timeout (timeval) */ #define CLGET_RETRY_TIMEOUT 5 /* get retry timeout (timeval) */ /* * void * CLNT_DESTROY(rh); * CLIENT *rh; */ #define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) #define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) /* * RPCTEST is a test program which is accessable on every rpc * transport/port. It is used for testing, performance evaluation, * and network administration. */ #define RPCTEST_PROGRAM ((u_long)1) #define RPCTEST_VERSION ((u_long)1) #define RPCTEST_NULL_PROC ((u_long)2) #define RPCTEST_NULL_BATCH_PROC ((u_long)3) /* * By convention, procedure 0 takes null arguments and returns them */ #define NULLPROC ((u_long)0) /* * Below are the client handle creation routines for the various * implementations of client side rpc. They can return NULL if a * creation failure occurs. */ #ifndef KERNEL /* * Memory based rpc (for speed check and testing) * CLIENT * * clntraw_create(prog, vers) * u_long prog; * u_long vers; */ extern CLIENT *clntraw_create(); /* * Generic client creation routine. Supported protocols are "udp" and "tcp" */ extern CLIENT * clnt_create(/*host, prog, vers, prot*/); /* char *host; -- hostname u_long prog; -- program number u_long vers; -- version number char *prot; -- protocol */ /* * Generic client creation routine. Supported protocols are "udp" and "tcp" */ extern CLIENT * clnt_create_vers(/*host, prog, vers_out, vers_low, vers_high, prot*/); /* char *host; -- hostname u_long prog; -- program number u_long *vers_out; -- servers best version number u_long vers_low; -- low version number u_long vers_high; -- high version number char *prot; -- protocol */ /* * TCP based rpc * CLIENT * * clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz) * struct sockaddr_in *raddr; * u_long prog; * u_long version; * register int *sockp; * u_int sendsz; * u_int recvsz; */ extern CLIENT *clnttcp_create(); /* * UDP based rpc. * CLIENT * * clntudp_create(raddr, program, version, wait, sockp) * struct sockaddr_in *raddr; * u_long program; * u_long version; * struct timeval wait; * int *sockp; * * Same as above, but you specify max packet sizes. * CLIENT * * clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, recvsz) * struct sockaddr_in *raddr; * u_long program; * u_long version; * struct timeval wait; * int *sockp; * u_int sendsz; * u_int recvsz; */ extern CLIENT *clntudp_create(); extern CLIENT *clntudp_bufcreate(); /* * Print why creation failed */ void clnt_pcreateerror(/* char *msg */); /* stderr */ char *clnt_spcreateerror(/* char *msg */); /* string */ /* * Like clnt_perror(), but is more verbose in its output */ void clnt_perrno(/* enum clnt_stat num */); /* stderr */ /* * Print an English error message, given the client error code */ void clnt_perror(/* CLIENT *clnt, char *msg */); /* stderr */ char *clnt_sperror(/* CLIENT *clnt, char *msg */); /* string */ /* * If a creation fails, the following allows the user to figure out why. */ struct rpc_createerr { enum clnt_stat cf_stat; struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */ }; extern struct rpc_createerr rpc_createerr; #endif /* !KERNEL */ /* * Copy error message to buffer. */ char *clnt_sperrno(/* enum clnt_stat num */); /* string */ #ifdef KERNEL /* * Kernel udp based rpc * CLIENT * * clntkudp_create(addr, pgm, vers) * struct sockaddr_in *addr; * u_long pgm; * u_long vers; */ extern CLIENT *clntkudp_create(); #endif /* * Timers used for the pseudo-transport protocol when using datagrams */ struct rpc_timers { u_short rt_srtt; /* smoothed round-trip time */ u_short rt_deviate; /* estimated deviation */ u_long rt_rtxcur; /* current (backed-off) rto */ }; /* * Feedback values used for possible congestion and rate control */ #define FEEDBACK_REXMIT1 1 /* first retransmit */ #define FEEDBACK_OK 2 /* no retransmits */ #define UDPMSGSIZE 8800 /* rpc imposed limit on udp msg size */ #define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */ #ifdef KERNEL /* * Alloc_xid presents an interface which kernel RPC clients * should use to allocate their XIDs. Its implementation * may change over time (for example, to allow sharing of * XIDs between the kernel and user-level applications, so * all XID allocation should be done by calling alloc_xid(). */ extern u_long clntxid; #define alloc_xid() (clntxid++) #endif #endif /*!_rpc_clnt_h*/