1 /* @(#)clnt.h 2.1 88/07/29 4.0 RPCSRC; from 1.31 88/02/08 SMI*/
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32 * clnt.h - Client side remote procedure call interface.
34 * Copyright (C) 1984, Sun Microsystems, Inc.
41 #include <sys/types.h>
42 #include <rpc/types.h>
48 * Rpc calls return an enum clnt_stat. This should be looked at more,
49 * since each implementation is required to live with this (implementation
50 * independent) list of errors.
53 RPC_SUCCESS=0, /* call succeeded */
57 RPC_CANTENCODEARGS=1, /* can't encode arguments */
58 RPC_CANTDECODERES=2, /* can't decode results */
59 RPC_CANTSEND=3, /* failure in sending call */
60 RPC_CANTRECV=4, /* failure in receiving result */
61 RPC_TIMEDOUT=5, /* call timed out */
65 RPC_VERSMISMATCH=6, /* rpc versions not compatible */
66 RPC_AUTHERROR=7, /* authentication error */
67 RPC_PROGUNAVAIL=8, /* program not available */
68 RPC_PROGVERSMISMATCH=9, /* program version mismatched */
69 RPC_PROCUNAVAIL=10, /* procedure unavailable */
70 RPC_CANTDECODEARGS=11, /* decode arguments error */
71 RPC_SYSTEMERROR=12, /* generic "other problem" */
72 RPC_NOBROADCAST = 21, /* Broadcasting not supported */
74 * callrpc & clnt_create errors
76 RPC_UNKNOWNHOST=13, /* unknown host name */
77 RPC_UNKNOWNPROTO=17, /* unknown protocol */
78 RPC_UNKNOWNADDR = 19, /* Remote address unknown */
83 RPC_RPCBFAILURE=14, /* portmapper failed in its call */
84 #define RPC_PMAPFAILURE RPC_RPCBFAILURE
85 RPC_PROGNOTREGISTERED=15, /* remote program is not registered */
86 RPC_N2AXLATEFAILURE = 22, /* Name to addr translation failed */
98 RPC_STALERACHANDLE = 25
106 enum clnt_stat re_status;
108 int RE_errno; /* related system error */
109 enum auth_stat RE_why; /* why the auth error occurred */
111 u_long low; /* lowest verion supported */
112 u_long high; /* highest verion supported */
114 struct { /* maybe meaningful if RPC_FAILED */
117 } RE_lb; /* life boot & debugging only */
119 #define re_errno ru.RE_errno
120 #define re_why ru.RE_why
121 #define re_vers ru.RE_vers
122 #define re_lb ru.RE_lb
128 * Created by individual implementations, see e.g. rpc_udp.c.
129 * Client is responsible for initializing auth, see e.g. auth_none.c.
131 typedef struct CLIENT CLIENT;
133 AUTH *cl_auth; /* authenticator */
135 enum clnt_stat (*cl_call) __P ((CLIENT *, u_long, xdrproc_t,
137 caddr_t, struct timeval));
138 /* call remote procedure */
139 void (*cl_abort) __P ((void)); /* abort a call */
140 void (*cl_geterr) __P ((CLIENT *, struct rpc_err *));
141 /* get specific error code */
142 bool_t (*cl_freeres) __P ((CLIENT *, xdrproc_t, caddr_t));
144 void (*cl_destroy) __P ((CLIENT *)); /* destroy this structure */
145 bool_t (*cl_control) __P ((CLIENT *, int, char *));
146 /* the ioctl() of rpc */
148 caddr_t cl_private; /* private stuff */
153 * client side rpc interface ops
155 * Parameter types are:
161 * CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout)
168 * struct timeval timeout;
170 #define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \
171 ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs))
172 #define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \
173 ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, argsp, xres, resp, secs))
180 #define CLNT_ABORT(rh) ((*(rh)->cl_ops->cl_abort)(rh))
181 #define clnt_abort(rh) ((*(rh)->cl_ops->cl_abort)(rh))
188 #define CLNT_GETERR(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
189 #define clnt_geterr(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp))
194 * CLNT_FREERES(rh, xres, resp);
199 #define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
200 #define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))
204 * CLNT_CONTROL(cl, request, info)
209 #define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
210 #define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))
213 * control operations that apply to all transports
215 * Note: options marked XXX are no-ops in this implementation of RPC.
216 * The are present in TI-RPC but can't be implemented here since they
217 * depend on the presence of STREAMS/TLI, which we don't have.
219 #define CLSET_TIMEOUT 1 /* set timeout (timeval) */
220 #define CLGET_TIMEOUT 2 /* get timeout (timeval) */
221 #define CLGET_SERVER_ADDR 3 /* get server's address (sockaddr) */
222 #define CLGET_FD 6 /* get connections file descriptor */
223 #define CLGET_SVC_ADDR 7 /* get server's address (netbuf) XXX */
224 #define CLSET_FD_CLOSE 8 /* close fd while clnt_destroy */
225 #define CLSET_FD_NCLOSE 9 /* Do not close fd while clnt_destroy*/
226 #define CLGET_XID 10 /* Get xid */
227 #define CLSET_XID 11 /* Set xid */
228 #define CLGET_VERS 12 /* Get version number */
229 #define CLSET_VERS 13 /* Set version number */
230 #define CLGET_PROG 14 /* Get program number */
231 #define CLSET_PROG 15 /* Set program number */
232 #define CLSET_SVC_ADDR 16 /* get server's address (netbuf) XXX */
233 #define CLSET_PUSH_TIMOD 17 /* push timod if not already present XXX */
234 #define CLSET_POP_TIMOD 18 /* pop timod XXX */
236 * Connectionless only control operations
238 #define CLSET_RETRY_TIMEOUT 4 /* set retry timeout (timeval) */
239 #define CLGET_RETRY_TIMEOUT 5 /* get retry timeout (timeval) */
246 #define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
247 #define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh))
251 * RPCTEST is a test program which is accessible on every rpc
252 * transport/port. It is used for testing, performance evaluation,
253 * and network administration.
256 #define RPCTEST_PROGRAM ((u_long)1)
257 #define RPCTEST_VERSION ((u_long)1)
258 #define RPCTEST_NULL_PROC ((u_long)2)
259 #define RPCTEST_NULL_BATCH_PROC ((u_long)3)
262 * By convention, procedure 0 takes null arguments and returns them
265 #define NULLPROC ((u_long)0)
268 * Below are the client handle creation routines for the various
269 * implementations of client side rpc. They can return NULL if a
270 * creation failure occurs.
274 * Memory based rpc (for speed check and testing)
276 * clntraw_create(prog, vers)
280 extern CLIENT *clntraw_create __P ((__const u_long __prog,
281 __const u_long __vers));
285 * Generic client creation routine. Supported protocols are "udp" and "tcp"
287 * clnt_create(host, prog, vers, prot)
288 * char *host; -- hostname
289 * u_long prog; -- program number
290 * u_ong vers; -- version number
291 * char *prot; -- protocol
293 extern CLIENT *clnt_create __P ((__const char *__host, __const u_long __prog,
294 __const u_long __vers, __const char *__prot));
300 * clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
301 * struct sockaddr_in *raddr;
304 * register int *sockp;
308 extern CLIENT *clnttcp_create __P ((struct sockaddr_in *__raddr,
309 u_long __prog, u_long __version,
310 int *__sockp, u_int __sendsz,
316 * clntudp_create(raddr, program, version, wait, sockp)
317 * struct sockaddr_in *raddr;
320 * struct timeval wait_resend;
323 * Same as above, but you specify max packet sizes.
325 * clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, recvsz)
326 * struct sockaddr_in *raddr;
329 * struct timeval wait_resend;
334 extern CLIENT *clntudp_create __P ((struct sockaddr_in *__raddr,
335 u_long __program, u_long __version,
336 struct timeval __wait_resend,
338 extern CLIENT *clntudp_bufcreate __P ((struct sockaddr_in *__raddr,
339 u_long __program, u_long __version,
340 struct timeval __wait_resend,
341 int *__sockp, u_int __sendsz,
344 extern int callrpc __P ((__const char *__host, __const u_long __prognum,
345 __const u_long __versnum, __const u_long __procnum,
346 __const xdrproc_t __inproc, __const char *__in,
347 __const xdrproc_t __outproc, char *__out));
348 extern int _rpc_dtablesize __P ((void));
351 * Print why creation failed
353 extern void clnt_pcreateerror __P ((__const char *__msg)); /* stderr */
354 extern char *clnt_spcreateerror __P ((__const char *__msg)); /* string */
357 * Like clnt_perror(), but is more verbose in its output
359 extern void clnt_perrno __P ((enum clnt_stat __num)); /* stderr */
362 * Print an English error message, given the client error code
364 extern void clnt_perror __P ((CLIENT *__clnt, __const char *__msg));
366 extern char *clnt_sperror __P ((CLIENT *__clnt, __const char *__msg));
370 * If a creation fails, the following allows the user to figure out why.
372 struct rpc_createerr {
373 enum clnt_stat cf_stat;
374 struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */
377 extern struct rpc_createerr rpc_createerr;
382 * Copy error message to buffer.
384 extern char *clnt_sperrno __P ((enum clnt_stat __num)); /* string */
387 * get the port number on the host for the rpc program,version and proto
389 extern int getrpcport __P ((__const char * __host, u_long __prognum,
390 u_long __versnum, u_int proto));
393 * get the local host's IP address without consulting
394 * name service library functions
396 extern void get_myaddress __P ((struct sockaddr_in *));
398 #define UDPMSGSIZE 8800 /* rpc imposed limit on udp msg size */
399 #define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */
403 #endif /* rpc/clnt.h */