krpc_subr.c (b40ce4165d5eb3a5de1515245055350ae3dbab8e) krpc_subr.c (7c208ed659437ef984f2bb98bdc20fa5cfdebefc)
1/* $NetBSD: krpc_subr.c,v 1.12.4.1 1996/06/07 00:52:26 cgd Exp $ */
1/* $NetBSD: krpc_subr.c,v 1.12.4.1 1996/06/07 00:52:26 cgd Exp $ */
2/* $FreeBSD$ */
3
2
4/*
3/*-
5 * Copyright (c) 1995 Gordon Ross, Adam Glass
6 * Copyright (c) 1992 Regents of the University of California.
7 * All rights reserved.
8 *
9 * This software was developed by the Computer Systems Engineering group
10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
11 * contributed to Berkeley.
12 *

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38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * partially based on:
42 * libnetboot/rpc.c
43 * @(#) Header: rpc.c,v 1.12 93/09/28 08:31:56 leres Exp (LBL)
44 */
45
4 * Copyright (c) 1995 Gordon Ross, Adam Glass
5 * Copyright (c) 1992 Regents of the University of California.
6 * All rights reserved.
7 *
8 * This software was developed by the Computer Systems Engineering group
9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10 * contributed to Berkeley.
11 *

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37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * partially based on:
41 * libnetboot/rpc.c
42 * @(#) Header: rpc.c,v 1.12 93/09/28 08:31:56 leres Exp (LBL)
43 */
44
45#include <sys/cdefs.h>
46__FBSDID("$FreeBSD$");
47
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/jail.h>
48#include <sys/malloc.h>
49#include <sys/mbuf.h>
51#include <sys/malloc.h>
52#include <sys/mbuf.h>
53#include <sys/proc.h>
50#include <sys/socket.h>
51#include <sys/socketvar.h>
52#include <sys/uio.h>
53
54#include <net/if.h>
54#include <sys/socket.h>
55#include <sys/socketvar.h>
56#include <sys/uio.h>
57
58#include <net/if.h>
59#include <net/vnet.h>
60
55#include <netinet/in.h>
56
61#include <netinet/in.h>
62
57#include <nfs/rpcv2.h>
63#include <rpc/types.h>
64#include <rpc/auth.h>
65#include <rpc/rpc_msg.h>
58#include <nfs/krpc.h>
59#include <nfs/xdr_subs.h>
60
61/*
62 * Kernel support for Sun RPC
63 *
64 * Used currently for bootstrapping in nfs diskless configurations.
65 */

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76struct auth_unix {
77 int32_t ua_time;
78 int32_t ua_hostname; /* null */
79 int32_t ua_uid;
80 int32_t ua_gid;
81 int32_t ua_gidlist; /* null */
82};
83
66#include <nfs/krpc.h>
67#include <nfs/xdr_subs.h>
68
69/*
70 * Kernel support for Sun RPC
71 *
72 * Used currently for bootstrapping in nfs diskless configurations.
73 */

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84struct auth_unix {
85 int32_t ua_time;
86 int32_t ua_hostname; /* null */
87 int32_t ua_uid;
88 int32_t ua_gid;
89 int32_t ua_gidlist; /* null */
90};
91
84struct rpc_call {
92struct krpc_call {
85 u_int32_t rp_xid; /* request transaction id */
86 int32_t rp_direction; /* call direction (0) */
87 u_int32_t rp_rpcvers; /* rpc version (2) */
88 u_int32_t rp_prog; /* program */
89 u_int32_t rp_vers; /* version */
90 u_int32_t rp_proc; /* procedure */
91 struct auth_info rpc_auth;
92 struct auth_unix rpc_unix;
93 struct auth_info rpc_verf;
94};
95
93 u_int32_t rp_xid; /* request transaction id */
94 int32_t rp_direction; /* call direction (0) */
95 u_int32_t rp_rpcvers; /* rpc version (2) */
96 u_int32_t rp_prog; /* program */
97 u_int32_t rp_vers; /* version */
98 u_int32_t rp_proc; /* procedure */
99 struct auth_info rpc_auth;
100 struct auth_unix rpc_unix;
101 struct auth_info rpc_verf;
102};
103
96struct rpc_reply {
104struct krpc_reply {
97 u_int32_t rp_xid; /* request transaction id */
98 int32_t rp_direction; /* call direction (1) */
99 int32_t rp_astatus; /* accept status (0: accepted) */
100 union {
101 u_int32_t rpu_errno;
102 struct {
103 struct auth_info rok_auth;
104 u_int32_t rok_status;

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119 */
120#define MAX_RESEND_DELAY 5 /* seconds */
121
122/*
123 * Call portmap to lookup a port number for a particular rpc program
124 * Returns non-zero error on failure.
125 */
126int
105 u_int32_t rp_xid; /* request transaction id */
106 int32_t rp_direction; /* call direction (1) */
107 int32_t rp_astatus; /* accept status (0: accepted) */
108 union {
109 u_int32_t rpu_errno;
110 struct {
111 struct auth_info rok_auth;
112 u_int32_t rok_status;

--- 14 unchanged lines hidden (view full) ---

127 */
128#define MAX_RESEND_DELAY 5 /* seconds */
129
130/*
131 * Call portmap to lookup a port number for a particular rpc program
132 * Returns non-zero error on failure.
133 */
134int
127krpc_portmap(sin, prog, vers, portp, td)
128 struct sockaddr_in *sin; /* server address */
129 u_int prog, vers; /* host order */
130 u_int16_t *portp; /* network order */
131 struct thread *td;
135krpc_portmap(struct sockaddr_in *sin, u_int prog, u_int vers, u_int16_t *portp,
136 struct thread *td)
132{
133 struct sdata {
134 u_int32_t prog; /* call program */
135 u_int32_t vers; /* call version */
136 u_int32_t proto; /* call protocol */
137 u_int32_t port; /* call port (unused) */
138 } *sdata;
139 struct rdata {

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144 int error;
145
146 /* The portmapper port is fixed. */
147 if (prog == PMAPPROG) {
148 *portp = htons(PMAPPORT);
149 return 0;
150 }
151
137{
138 struct sdata {
139 u_int32_t prog; /* call program */
140 u_int32_t vers; /* call version */
141 u_int32_t proto; /* call protocol */
142 u_int32_t port; /* call port (unused) */
143 } *sdata;
144 struct rdata {

--- 4 unchanged lines hidden (view full) ---

149 int error;
150
151 /* The portmapper port is fixed. */
152 if (prog == PMAPPROG) {
153 *portp = htons(PMAPPORT);
154 return 0;
155 }
156
152 m = m_get(M_TRYWAIT, MT_DATA);
153 if (m == NULL)
154 return ENOBUFS;
157 m = m_get(M_WAIT, MT_DATA);
155 sdata = mtod(m, struct sdata *);
156 m->m_len = sizeof(*sdata);
157
158 /* Do the RPC to get it. */
159 sdata->prog = txdr_unsigned(prog);
160 sdata->vers = txdr_unsigned(vers);
161 sdata->proto = txdr_unsigned(IPPROTO_UDP);
162 sdata->port = 0;
163
164 sin->sin_port = htons(PMAPPORT);
165 error = krpc_call(sin, PMAPPROG, PMAPVERS,
166 PMAPPROC_GETPORT, &m, NULL, td);
158 sdata = mtod(m, struct sdata *);
159 m->m_len = sizeof(*sdata);
160
161 /* Do the RPC to get it. */
162 sdata->prog = txdr_unsigned(prog);
163 sdata->vers = txdr_unsigned(vers);
164 sdata->proto = txdr_unsigned(IPPROTO_UDP);
165 sdata->port = 0;
166
167 sin->sin_port = htons(PMAPPORT);
168 error = krpc_call(sin, PMAPPROG, PMAPVERS,
169 PMAPPROC_GETPORT, &m, NULL, td);
167 if (error)
170 if (error)
168 return error;
169
170 if (m->m_len < sizeof(*rdata)) {
171 m = m_pullup(m, sizeof(*rdata));
172 if (m == NULL)
173 return ENOBUFS;
174 }
175 rdata = mtod(m, struct rdata *);

--- 4 unchanged lines hidden (view full) ---

180}
181
182/*
183 * Do a remote procedure call (RPC) and wait for its reply.
184 * If from_p is non-null, then we are doing broadcast, and
185 * the address from whence the response came is saved there.
186 */
187int
171 return error;
172
173 if (m->m_len < sizeof(*rdata)) {
174 m = m_pullup(m, sizeof(*rdata));
175 if (m == NULL)
176 return ENOBUFS;
177 }
178 rdata = mtod(m, struct rdata *);

--- 4 unchanged lines hidden (view full) ---

183}
184
185/*
186 * Do a remote procedure call (RPC) and wait for its reply.
187 * If from_p is non-null, then we are doing broadcast, and
188 * the address from whence the response came is saved there.
189 */
190int
188krpc_call(sa, prog, vers, func, data, from_p, td)
189 struct sockaddr_in *sa;
190 u_int prog, vers, func;
191 struct mbuf **data; /* input/output */
192 struct sockaddr **from_p; /* output */
193 struct thread *td;
191krpc_call(struct sockaddr_in *sa, u_int prog, u_int vers, u_int func,
192 struct mbuf **data, struct sockaddr **from_p, struct thread *td)
194{
195 struct socket *so;
196 struct sockaddr_in *sin, ssin;
197 struct sockaddr *from;
198 struct mbuf *m, *nam, *mhead;
193{
194 struct socket *so;
195 struct sockaddr_in *sin, ssin;
196 struct sockaddr *from;
197 struct mbuf *m, *nam, *mhead;
199 struct rpc_call *call;
200 struct rpc_reply *reply;
198 struct krpc_call *call;
199 struct krpc_reply *reply;
201 struct sockopt sopt;
202 struct timeval tv;
203 struct uio auio;
204 int error, rcvflg, timo, secs, len;
205 static u_int32_t xid = ~0xFF;
206 u_int16_t tport;
207 u_int32_t saddr;
208

--- 6 unchanged lines hidden (view full) ---

215
216 /* Free at end if not null. */
217 nam = mhead = NULL;
218 from = NULL;
219
220 /*
221 * Create socket and set its recieve timeout.
222 */
200 struct sockopt sopt;
201 struct timeval tv;
202 struct uio auio;
203 int error, rcvflg, timo, secs, len;
204 static u_int32_t xid = ~0xFF;
205 u_int16_t tport;
206 u_int32_t saddr;
207

--- 6 unchanged lines hidden (view full) ---

214
215 /* Free at end if not null. */
216 nam = mhead = NULL;
217 from = NULL;
218
219 /*
220 * Create socket and set its recieve timeout.
221 */
223 if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0, td)))
222 if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0, td->td_ucred, td)))
224 goto out;
225
226 tv.tv_sec = 1;
227 tv.tv_usec = 0;
228 bzero(&sopt, sizeof sopt);
223 goto out;
224
225 tv.tv_sec = 1;
226 tv.tv_usec = 0;
227 bzero(&sopt, sizeof sopt);
228 sopt.sopt_dir = SOPT_SET;
229 sopt.sopt_level = SOL_SOCKET;
230 sopt.sopt_name = SO_RCVTIMEO;
231 sopt.sopt_val = &tv;
232 sopt.sopt_valsize = sizeof tv;
233
234 if ((error = sosetopt(so, &sopt)) != 0)
235 goto out;
236

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270
271 /*
272 * Setup socket address for the server.
273 */
274
275 /*
276 * Prepend RPC message header.
277 */
229 sopt.sopt_level = SOL_SOCKET;
230 sopt.sopt_name = SO_RCVTIMEO;
231 sopt.sopt_val = &tv;
232 sopt.sopt_valsize = sizeof tv;
233
234 if ((error = sosetopt(so, &sopt)) != 0)
235 goto out;
236

--- 33 unchanged lines hidden (view full) ---

270
271 /*
272 * Setup socket address for the server.
273 */
274
275 /*
276 * Prepend RPC message header.
277 */
278 mhead = m_gethdr(M_TRYWAIT, MT_DATA);
278 mhead = m_gethdr(M_WAIT, MT_DATA);
279 mhead->m_next = *data;
279 mhead->m_next = *data;
280 call = mtod(mhead, struct rpc_call *);
280 call = mtod(mhead, struct krpc_call *);
281 mhead->m_len = sizeof(*call);
282 bzero((caddr_t)call, sizeof(*call));
283 /* rpc_call part */
284 xid++;
285 call->rp_xid = txdr_unsigned(xid);
286 /* call->rp_direction = 0; */
287 call->rp_rpcvers = txdr_unsigned(2);
288 call->rp_prog = txdr_unsigned(prog);
289 call->rp_vers = txdr_unsigned(vers);
290 call->rp_proc = txdr_unsigned(func);
291 /* rpc_auth part (auth_unix as root) */
281 mhead->m_len = sizeof(*call);
282 bzero((caddr_t)call, sizeof(*call));
283 /* rpc_call part */
284 xid++;
285 call->rp_xid = txdr_unsigned(xid);
286 /* call->rp_direction = 0; */
287 call->rp_rpcvers = txdr_unsigned(2);
288 call->rp_prog = txdr_unsigned(prog);
289 call->rp_vers = txdr_unsigned(vers);
290 call->rp_proc = txdr_unsigned(func);
291 /* rpc_auth part (auth_unix as root) */
292 call->rpc_auth.authtype = txdr_unsigned(RPCAUTH_UNIX);
292 call->rpc_auth.authtype = txdr_unsigned(AUTH_UNIX);
293 call->rpc_auth.authlen = txdr_unsigned(sizeof(struct auth_unix));
294 /* rpc_verf part (auth_null) */
295 call->rpc_verf.authtype = 0;
296 call->rpc_verf.authlen = 0;
297
298 /*
299 * Setup packet header
300 */
293 call->rpc_auth.authlen = txdr_unsigned(sizeof(struct auth_unix));
294 /* rpc_verf part (auth_null) */
295 call->rpc_verf.authtype = 0;
296 call->rpc_verf.authlen = 0;
297
298 /*
299 * Setup packet header
300 */
301 len = 0;
302 m = mhead;
303 while (m) {
304 len += m->m_len;
305 m = m->m_next;
306 }
307 mhead->m_pkthdr.len = len;
301 m_fixhdr(mhead);
308 mhead->m_pkthdr.rcvif = NULL;
309
310 /*
311 * Send it, repeatedly, until a reply is received,
312 * but delay each re-send by an increasing amount.
313 * If the delay hits the maximum, start complaining.
314 */
315 timo = 0;
316 for (;;) {
317 /* Send RPC request (or re-send). */
302 mhead->m_pkthdr.rcvif = NULL;
303
304 /*
305 * Send it, repeatedly, until a reply is received,
306 * but delay each re-send by an increasing amount.
307 * If the delay hits the maximum, start complaining.
308 */
309 timo = 0;
310 for (;;) {
311 /* Send RPC request (or re-send). */
318 m = m_copym(mhead, 0, M_COPYALL, M_TRYWAIT);
319 if (m == NULL) {
320 error = ENOBUFS;
321 goto out;
322 }
312 m = m_copym(mhead, 0, M_COPYALL, M_WAIT);
323 error = sosend(so, (struct sockaddr *)sa, NULL, m,
324 NULL, 0, td);
325 if (error) {
326 printf("krpc_call: sosend: %d\n", error);
327 goto out;
328 }
329 m = NULL;
330

--- 11 unchanged lines hidden (view full) ---

342
343 /*
344 * Wait for up to timo seconds for a reply.
345 * The socket receive timeout was set to 1 second.
346 */
347 secs = timo;
348 while (secs > 0) {
349 if (from) {
313 error = sosend(so, (struct sockaddr *)sa, NULL, m,
314 NULL, 0, td);
315 if (error) {
316 printf("krpc_call: sosend: %d\n", error);
317 goto out;
318 }
319 m = NULL;
320

--- 11 unchanged lines hidden (view full) ---

332
333 /*
334 * Wait for up to timo seconds for a reply.
335 * The socket receive timeout was set to 1 second.
336 */
337 secs = timo;
338 while (secs > 0) {
339 if (from) {
350 FREE(from, M_SONAME);
340 free(from, M_SONAME);
351 from = NULL;
352 }
353 if (m) {
354 m_freem(m);
355 m = NULL;
356 }
341 from = NULL;
342 }
343 if (m) {
344 m_freem(m);
345 m = NULL;
346 }
357 bzero(&auio,sizeof(auio));
347 bzero(&auio, sizeof(auio));
358 auio.uio_resid = len = 1<<16;
359 rcvflg = 0;
360 error = soreceive(so, &from, &auio, &m, NULL, &rcvflg);
361 if (error == EWOULDBLOCK) {
362 secs--;
363 continue;
364 }
365 if (error)
366 goto out;
367 len -= auio.uio_resid;
368
369 /* Does the reply contain at least a header? */
370 if (len < MIN_REPLY_HDR)
371 continue;
372 if (m->m_len < MIN_REPLY_HDR)
373 continue;
348 auio.uio_resid = len = 1<<16;
349 rcvflg = 0;
350 error = soreceive(so, &from, &auio, &m, NULL, &rcvflg);
351 if (error == EWOULDBLOCK) {
352 secs--;
353 continue;
354 }
355 if (error)
356 goto out;
357 len -= auio.uio_resid;
358
359 /* Does the reply contain at least a header? */
360 if (len < MIN_REPLY_HDR)
361 continue;
362 if (m->m_len < MIN_REPLY_HDR)
363 continue;
374 reply = mtod(m, struct rpc_reply *);
364 reply = mtod(m, struct krpc_reply *);
375
376 /* Is it the right reply? */
365
366 /* Is it the right reply? */
377 if (reply->rp_direction != txdr_unsigned(RPC_REPLY))
367 if (reply->rp_direction != txdr_unsigned(REPLY))
378 continue;
379
380 if (reply->rp_xid != txdr_unsigned(xid))
381 continue;
382
383 /* Was RPC accepted? (authorization OK) */
384 if (reply->rp_astatus != 0) {
385 error = fxdr_unsigned(u_int32_t, reply->rp_errno);
386 printf("rpc denied, error=%d\n", error);
387 continue;
388 }
389
390 /* Did the call succeed? */
391 if (reply->rp_status != 0) {
392 error = fxdr_unsigned(u_int32_t, reply->rp_status);
368 continue;
369
370 if (reply->rp_xid != txdr_unsigned(xid))
371 continue;
372
373 /* Was RPC accepted? (authorization OK) */
374 if (reply->rp_astatus != 0) {
375 error = fxdr_unsigned(u_int32_t, reply->rp_errno);
376 printf("rpc denied, error=%d\n", error);
377 continue;
378 }
379
380 /* Did the call succeed? */
381 if (reply->rp_status != 0) {
382 error = fxdr_unsigned(u_int32_t, reply->rp_status);
393 if (error == RPC_PROGMISMATCH) {
383 if (error == PROG_MISMATCH) {
394 error = EBADRPC;
395 goto out;
396 }
397 printf("rpc denied, status=%d\n", error);
398 continue;
399 }
400
401 goto gotreply; /* break two levels */

--- 13 unchanged lines hidden (view full) ---

415 len = sizeof(*reply);
416 if (m->m_len < len) {
417 m = m_pullup(m, len);
418 if (m == NULL) {
419 error = ENOBUFS;
420 goto out;
421 }
422 }
384 error = EBADRPC;
385 goto out;
386 }
387 printf("rpc denied, status=%d\n", error);
388 continue;
389 }
390
391 goto gotreply; /* break two levels */

--- 13 unchanged lines hidden (view full) ---

405 len = sizeof(*reply);
406 if (m->m_len < len) {
407 m = m_pullup(m, len);
408 if (m == NULL) {
409 error = ENOBUFS;
410 goto out;
411 }
412 }
423 reply = mtod(m, struct rpc_reply *);
413 reply = mtod(m, struct krpc_reply *);
424 if (reply->rp_auth.authtype != 0) {
425 len += fxdr_unsigned(u_int32_t, reply->rp_auth.authlen);
426 len = (len + 3) & ~3; /* XXX? */
427 }
428 m_adj(m, len);
429
430 /* result */
431 *data = m;

--- 19 unchanged lines hidden (view full) ---

451 */
452struct xdr_string {
453 u_int32_t len; /* length without null or padding */
454 char data[4]; /* data (longer, of course) */
455 /* data is padded to a long-word boundary */
456};
457
458struct mbuf *
414 if (reply->rp_auth.authtype != 0) {
415 len += fxdr_unsigned(u_int32_t, reply->rp_auth.authlen);
416 len = (len + 3) & ~3; /* XXX? */
417 }
418 m_adj(m, len);
419
420 /* result */
421 *data = m;

--- 19 unchanged lines hidden (view full) ---

441 */
442struct xdr_string {
443 u_int32_t len; /* length without null or padding */
444 char data[4]; /* data (longer, of course) */
445 /* data is padded to a long-word boundary */
446};
447
448struct mbuf *
459xdr_string_encode(str, len)
460 char *str;
461 int len;
449xdr_string_encode(char *str, int len)
462{
463 struct mbuf *m;
464 struct xdr_string *xs;
465 int dlen; /* padded string length */
466 int mlen; /* message length */
467
468 dlen = (len + 3) & ~3;
469 mlen = dlen + 4;
470
471 if (mlen > MCLBYTES) /* If too big, we just can't do it. */
472 return (NULL);
473
450{
451 struct mbuf *m;
452 struct xdr_string *xs;
453 int dlen; /* padded string length */
454 int mlen; /* message length */
455
456 dlen = (len + 3) & ~3;
457 mlen = dlen + 4;
458
459 if (mlen > MCLBYTES) /* If too big, we just can't do it. */
460 return (NULL);
461
474 m = m_get(M_TRYWAIT, MT_DATA);
475 if (mlen > MLEN) {
476 MCLGET(m, M_TRYWAIT);
477 if ((m->m_flags & M_EXT) == 0) {
478 (void) m_free(m); /* There can be only one. */
479 return (NULL);
480 }
481 }
462 m = m_get(M_WAIT, MT_DATA);
463 if (mlen > MLEN)
464 MCLGET(m, M_WAIT);
482 xs = mtod(m, struct xdr_string *);
483 m->m_len = mlen;
484 xs->len = txdr_unsigned(len);
485 bcopy(str, xs->data, len);
486 return (m);
487}
465 xs = mtod(m, struct xdr_string *);
466 m->m_len = mlen;
467 xs->len = txdr_unsigned(len);
468 bcopy(str, xs->data, len);
469 return (m);
470}