aboutsummaryrefslogtreecommitdiff
path: root/sunrpc/rpc/clnt.h
blob: ed12add102e91e8e700140265c12b822051cabe6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
/* @(#)clnt.h	2.1 88/07/29 4.0 RPCSRC; from 1.31 88/02/08 SMI*/
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

/*
 * clnt.h - Client side remote procedure call interface.
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 */

#ifndef _RPC_CLNT_H
#define _RPC_CLNT_H	1

#include <features.h>
#include <sys/types.h>
#include <rpc/types.h>
#include <rpc/auth.h>

__BEGIN_DECLS

/*
 * 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 */
	/*
	 * 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" */
	RPC_NOBROADCAST = 21,		/* Broadcasting not supported */
	/*
	 * callrpc & clnt_create errors
	 */
	RPC_UNKNOWNHOST=13,		/* unknown host name */
	RPC_UNKNOWNPROTO=17,		/* unknown protocol */
	RPC_UNKNOWNADDR = 19,		/* Remote address unknown */

	/*
	 * rpcbind errors
	 */
	RPC_RPCBFAILURE=14,		/* portmapper failed in its call */
#define RPC_PMAPFAILURE RPC_RPCBFAILURE
	RPC_PROGNOTREGISTERED=15,	/* remote program is not registered */
	RPC_N2AXLATEFAILURE = 22,	/* Name to addr translation failed */
	/*
	 * unspecified error
	 */
	RPC_FAILED=16,
	RPC_INTR=18,
	RPC_TLIERROR=20,
	RPC_UDERROR=23,
        /*
         * asynchronous errors
         */
        RPC_INPROGRESS = 24,
        RPC_STALERACHANDLE = 25
};


/*
 * Error info.
 */
struct rpc_err {
  enum clnt_stat re_status;
  union {
    int RE_errno;		/* related 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 CLIENT CLIENT;
struct CLIENT {
  AUTH	*cl_auth;		 /* authenticator */
  struct clnt_ops {
    enum clnt_stat (*cl_call) __P ((CLIENT *, u_long, xdrproc_t,
				    caddr_t, xdrproc_t,
				    caddr_t, struct timeval));
			       	/* call remote procedure */
    void (*cl_abort) __P ((void));  /* abort a call */
    void (*cl_geterr) __P ((CLIENT *, struct rpc_err *));
				/* get specific error code */
    bool_t (*cl_freeres) __P ((CLIENT *, xdrproc_t, caddr_t));
				/* frees results */
    void (*cl_destroy) __P ((CLIENT *)); /* destroy this structure */
    bool_t (*cl_control) __P ((CLIENT *, int, char *));
				/* the ioctl() of rpc */
  } *cl_ops;
  caddr_t cl_private;		/* private stuff */
};


/*
 * 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 all transports
 *
 * Note: options marked XXX are no-ops in this implementation of RPC.
 * The are present in TI-RPC but can't be implemented here since they
 * depend on the presence of STREAMS/TLI, which we don't have.
 */
#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 CLGET_SVC_ADDR       7    /* get server's address (netbuf)      XXX */
#define CLSET_FD_CLOSE       8    /* close fd while clnt_destroy */
#define CLSET_FD_NCLOSE      9    /* Do not close fd while clnt_destroy*/
#define CLGET_XID            10   /* Get xid */
#define CLSET_XID            11   /* Set xid */
#define CLGET_VERS           12   /* Get version number */
#define CLSET_VERS           13   /* Set version number */
#define CLGET_PROG           14   /* Get program number */
#define CLSET_PROG           15   /* Set program number */
#define CLSET_SVC_ADDR       16   /* get server's address (netbuf)      XXX */
#define CLSET_PUSH_TIMOD     17   /* push timod if not already present  XXX */
#define CLSET_POP_TIMOD      18   /* pop timod                          XXX */
/*
 * Connectionless 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 accessible 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.
 */

/*
 * Memory based rpc (for speed check and testing)
 * CLIENT *
 * clntraw_create(prog, vers)
 *	u_long prog;
 *	u_long vers;
 */
extern CLIENT *clntraw_create __P ((__const u_long __prog,
				    __const u_long __vers));


/*
 * Generic client creation routine. Supported protocols are "udp" and "tcp"
 * CLIENT *
 * clnt_create(host, prog, vers, prot)
 *	char *host; 	-- hostname
 *	u_long prog;	-- program number
 *	u_ong vers;	-- version number
 *	char *prot;	-- protocol
 */
extern CLIENT *clnt_create __P ((__const char *__host, __const u_long __prog,
				 __const u_long __vers, __const char *__prot));


/*
 * 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 __P ((struct sockaddr_in *__raddr,
				    u_long __prog, u_long __version,
				    int *__sockp, u_int __sendsz,
				    u_int __recvsz));

/*
 * UDP based rpc.
 * CLIENT *
 * clntudp_create(raddr, program, version, wait, sockp)
 *	struct sockaddr_in *raddr;
 *	u_long program;
 *	u_long version;
 *	struct timeval wait_resend;
 *	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_resend;
 *	int *sockp;
 *	u_int sendsz;
 *	u_int recvsz;
 */
extern CLIENT *clntudp_create __P ((struct sockaddr_in *__raddr,
				    u_long __program, u_long __version,
				    struct timeval __wait_resend,
				    int *__sockp));
extern CLIENT *clntudp_bufcreate __P ((struct sockaddr_in *__raddr,
				       u_long __program, u_long __version,
				       struct timeval __wait_resend,
				       int *__sockp, u_int __sendsz,
				       u_int __recvsz));

extern int callrpc __P ((__const char *__host, __const u_long __prognum,
			 __const u_long __versnum, __const u_long __procnum,
			 __const xdrproc_t __inproc, __const char *__in,
			 __const xdrproc_t __outproc, char *__out));
extern int _rpc_dtablesize __P ((void));

/*
 * Print why creation failed
 */
extern void clnt_pcreateerror __P ((__const char *__msg));	/* stderr */
extern char *clnt_spcreateerror __P ((__const char *__msg));	/* string */

/*
 * Like clnt_perror(), but is more verbose in its output
 */
extern void clnt_perrno __P ((enum clnt_stat __num));	/* stderr */

/*
 * Print an English error message, given the client error code
 */
extern void clnt_perror __P ((CLIENT *__clnt, __const char *__msg));
							/* stderr */
extern char *clnt_sperror __P ((CLIENT *__clnt, __const 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;



/*
 * Copy error message to buffer.
 */
extern char *clnt_sperrno __P ((enum clnt_stat __num));	/* string */

/*
 * get the port number on the host for the rpc program,version and proto
 */
extern int getrpcport __P ((__const char * __host, u_long __prognum,
			   u_long __versnum, u_int proto));

/*
 * get the local host's IP address without consulting
 * name service library functions
 */
extern void get_myaddress __P ((struct sockaddr_in *));

#define UDPMSGSIZE	8800	/* rpc imposed limit on udp msg size */
#define RPCSMALLMSGSIZE	400	/* a more reasonable packet size */

__END_DECLS

#endif /* rpc/clnt.h */