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sdiff udiff text old ( 76618 ) new ( 87192 )
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1/*
2 * Copyright (c) 2000-2001 Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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

24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/sys/netsmb/smb_trantcp.c 76618 2001-05-15 10:19:57Z tanimura $
32 * $FreeBSD: head/sys/netsmb/smb_trantcp.c 87192 2001-12-02 08:47:29Z bp $
33 */
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/malloc.h>
38#include <sys/mbuf.h>
39#include <sys/proc.h>
40#include <sys/protosw.h>

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65
66static int smb_tcpsndbuf = 10 * 1024;
67static int smb_tcprcvbuf = 10 * 1024;
68
69SYSCTL_DECL(_net_smb);
70SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
71SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
72
73#define nb_sosend(so,m,flags,p) (so)->so_proto->pr_usrreqs->pru_sosend( \
74 so, NULL, 0, m, 0, flags, p)
73#define nb_sosend(so,m,flags,td) (so)->so_proto->pr_usrreqs->pru_sosend( \
74 so, NULL, 0, m, 0, flags, td)
75
76static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
77 u_int8_t *rpcodep, struct proc *p);
78static int smb_nbst_disconnect(struct smb_vc *vcp, struct proc *p);
77 u_int8_t *rpcodep, struct thread *td);
78static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
79
80static int
81nb_setsockopt_int(struct socket *so, int level, int name, int val)
82{
83 struct sockopt sopt;
84
85 bzero(&sopt, sizeof(sopt));
86 sopt.sopt_level = level;
87 sopt.sopt_name = name;
88 sopt.sopt_val = &val;
89 sopt.sopt_valsize = sizeof(val);
90 return sosetopt(so, &sopt);
91}
92
93static __inline int
94nb_poll(struct nbpcb *nbp, int events, struct proc *p)
94nb_poll(struct nbpcb *nbp, int events, struct thread *td)
95{
96 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso,
97 events, NULL, p);
97 events, NULL, td);
98}
99
100static int
101nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, struct proc *p)
101nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events,
102 struct thread *td)
103{
104 struct timeval atv, rtv, ttv;
105 struct proc *p;
106 int timo, error;
107
108 if (tv) {
109 atv = *tv;
110 if (itimerfix(&atv)) {
111 error = EINVAL;
112 goto done_noproclock;
113 }
114 getmicrouptime(&rtv);
115 timevaladd(&atv, &rtv);
116 }
117 timo = 0;
118 p = td->td_proc;
119 PROC_LOCK(p);
117 p->p_flag |= P_SELECT;
120 mtx_lock_spin(&sched_lock);
121 td->td_flags |= TDF_SELECT;
122 mtx_unlock_spin(&sched_lock);
123 PROC_UNLOCK(p);
119 error = nb_poll(nbp, events, p);
124 error = nb_poll(nbp, events, td);
125 PROC_LOCK(p);
126 if (error) {
127 error = 0;
128 goto done;
129 }
130 if (tv) {
131 getmicrouptime(&rtv);
132 if (timevalcmp(&rtv, &atv, >=)) {
133 /*
134 * An event of our interest may occur during locking a process.
135 * In order to avoid missing the event that occured during locking
136 * the process, test P_SELECT and rescan file descriptors if
137 * necessary.
138 */
134 if ((p->p_flag & P_SELECT) == 0) {
135 p->p_flag |= P_SELECT;
139 mtx_lock_spin(&sched_lock);
140 if ((td->td_flags & TDF_SELECT) == 0) {
141 td->td_flags |= TDF_SELECT;
142 mtx_unlock_spin(&sched_lock);
143 PROC_UNLOCK(p);
137 error = nb_poll(nbp, events, p);
144 error = nb_poll(nbp, events, td);
145 PROC_LOCK(p);
139 }
146 } else
147 mtx_unlock_spin(&sched_lock);
148 goto done;
149 }
150 ttv = atv;
151 timevalsub(&ttv, &rtv);
152 timo = tvtohz(&ttv);
153 }
146 p->p_flag &= ~P_SELECT;
154 mtx_lock_spin(&sched_lock);
155 td->td_flags &= ~TDF_SELECT;
156 mtx_unlock_spin(&sched_lock);
157 if (timo > 0)
158 error = cv_timedwait(&selwait, &p->p_mtx, timo);
159 else {
160 cv_wait(&selwait, &p->p_mtx);
161 error = 0;
162 }
163
164done:
165 mtx_lock_spin(&sched_lock);
166 td->td_flags &= ~TDF_SELECT;
167 mtx_unlock_spin(&sched_lock);
168 PROC_UNLOCK(p);
156 p->p_flag &= ~P_SELECT;
169
170done_noproclock:
171 if (error == ERESTART)
172 return 0;
173 return error;
174}
175
176static int
177nb_intr(struct nbpcb *nbp, struct proc *p)

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

216 if (seglen == 1)
217 break;
218 cp += seglen;
219 }
220 return 0;
221}
222
223static int
211nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct proc *p)
224nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
225{
226 struct socket *so;
227 int error, s;
228
216 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, p);
229 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, td);
230 if (error)
231 return error;
232 nbp->nbp_tso = so;
233 so->so_upcallarg = (caddr_t)nbp;
234 so->so_upcall = nb_upcall;
235 so->so_rcv.sb_flags |= SB_UPCALL;
236 so->so_rcv.sb_timeo = (5 * hz);
237 so->so_snd.sb_timeo = (5 * hz);
238 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
239 if (error)
240 goto bad;
241 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
242 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
243 so->so_rcv.sb_flags &= ~SB_NOINTR;
244 so->so_snd.sb_flags &= ~SB_NOINTR;
232 error = soconnect(so, (struct sockaddr*)to, p);
245 error = soconnect(so, (struct sockaddr*)to, td);
246 if (error)
247 goto bad;
248 s = splnet();
249 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
250 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
251 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
239 (error = nb_intr(nbp, p)) != 0) {
252 (error = nb_intr(nbp, td->td_proc)) != 0) {
253 so->so_state &= ~SS_ISCONNECTING;
254 splx(s);
255 goto bad;
256 }
257 }
258 if (so->so_error) {
259 error = so->so_error;
260 so->so_error = 0;
261 splx(s);
262 goto bad;
263 }
264 splx(s);
265 return 0;
266bad:
254 smb_nbst_disconnect(nbp->nbp_vc, p);
267 smb_nbst_disconnect(nbp->nbp_vc, td);
268 return error;
269}
270
271static int
259nbssn_rq_request(struct nbpcb *nbp, struct proc *p)
272nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
273{
274 struct mbchain mb, *mbp = &mb;
275 struct mdchain md, *mdp = &md;
276 struct mbuf *m0;
277 struct timeval tv;
278 struct sockaddr_in sin;
279 u_short port;
280 u_int8_t rpcode;
281 int error, rplen;
282
283 error = mb_init(mbp);
284 if (error)
285 return error;
286 mb_put_uint32le(mbp, 0);
287 nb_put_name(mbp, nbp->nbp_paddr);
288 nb_put_name(mbp, nbp->nbp_laddr);
289 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
277 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, p);
290 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
291 if (!error) {
292 nbp->nbp_state = NBST_RQSENT;
293 }
294 mb_detach(mbp);
295 mb_done(mbp);
296 if (error)
297 return error;
298 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
286 error = nbssn_rselect(nbp, &tv, POLLIN, p);
299 error = nbssn_rselect(nbp, &tv, POLLIN, td);
300 if (error == EWOULDBLOCK) { /* Timeout */
301 NBDEBUG("initial request timeout\n");
302 return ETIMEDOUT;
303 }
304 if (error) /* restart or interrupt */
305 return error;
293 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, p);
306 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
307 if (error) {
308 NBDEBUG("recv() error %d\n", error);
309 return error;
310 }
311 /*
312 * Process NETBIOS reply
313 */
314 if (m0)

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

327 if (rplen != 6) {
328 error = ECONNABORTED;
329 break;
330 }
331 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
332 md_get_uint16(mdp, &port);
333 sin.sin_port = port;
334 nbp->nbp_state = NBST_RETARGET;
322 smb_nbst_disconnect(nbp->nbp_vc, p);
323 error = nb_connect_in(nbp, &sin, p);
335 smb_nbst_disconnect(nbp->nbp_vc, td);
336 error = nb_connect_in(nbp, &sin, td);
337 if (!error)
325 error = nbssn_rq_request(nbp, p);
338 error = nbssn_rq_request(nbp, td);
339 if (error) {
327 smb_nbst_disconnect(nbp->nbp_vc, p);
340 smb_nbst_disconnect(nbp->nbp_vc, td);
341 break;
342 }
343 } while(0);
344 if (m0)
345 md_done(mdp);
346 return error;
347}
348
349static int
350nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
338 u_int8_t *rpcodep, int flags, struct proc *p)
351 u_int8_t *rpcodep, int flags, struct thread *td)
352{
353 struct socket *so = nbp->nbp_tso;
354 struct uio auio;
355 struct iovec aio;
356 u_int32_t len;
357 int error;
358
359 aio.iov_base = (caddr_t)&len;
360 aio.iov_len = sizeof(len);
361 auio.uio_iov = &aio;
362 auio.uio_iovcnt = 1;
363 auio.uio_segflg = UIO_SYSSPACE;
364 auio.uio_rw = UIO_READ;
365 auio.uio_offset = 0;
366 auio.uio_resid = sizeof(len);
354 auio.uio_procp = p;
367 auio.uio_td = td;
368 error = so->so_proto->pr_usrreqs->pru_soreceive
369 (so, (struct sockaddr **)NULL, &auio,
370 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
371 if (error)
372 return error;
373 if (auio.uio_resid > 0) {
374 SMBSDEBUG("short reply\n");
375 return EPIPE;

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

382 return EFBIG;
383 }
384 *lenp = len;
385 return 0;
386}
387
388static int
389nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
377 u_int8_t *rpcodep, struct proc *p)
390 u_int8_t *rpcodep, struct thread *td)
391{
392 struct socket *so = nbp->nbp_tso;
393 struct uio auio;
394 struct mbuf *m;
395 u_int8_t rpcode;
396 int len;
397 int error, rcvflg;
398
399 if (so == NULL)
400 return ENOTCONN;
401
402 if (mpp)
403 *mpp = NULL;
404 for(;;) {
405 m = NULL;
393 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, p);
406 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
407 if (so->so_state &
408 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
409 nbp->nbp_state = NBST_CLOSED;
410 NBDEBUG("session closed by peer\n");
411 return ECONNRESET;
412 }
413 if (error)
414 return error;
415 if (len == 0 && nbp->nbp_state != NBST_SESSION)
416 break;
417 if (rpcode == NB_SSN_KEEPALIVE)
418 continue;
419 bzero(&auio, sizeof(auio));
420 auio.uio_resid = len;
408 auio.uio_procp = p;
421 auio.uio_td = td;
422 do {
423 rcvflg = MSG_WAITALL;
424 error = so->so_proto->pr_usrreqs->pru_soreceive
425 (so, (struct sockaddr **)NULL,
426 &auio, &m, (struct mbuf **)NULL, &rcvflg);
427 } while (error == EWOULDBLOCK || error == EINTR ||
428 error == ERESTART);
429 if (error)

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

453 *rpcodep = rpcode;
454 return 0;
455}
456
457/*
458 * SMB transport interface
459 */
460static int
448smb_nbst_create(struct smb_vc *vcp, struct proc *p)
461smb_nbst_create(struct smb_vc *vcp, struct thread *td)
462{
463 struct nbpcb *nbp;
464
465 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
466 bzero(nbp, sizeof *nbp);
467 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
468 nbp->nbp_state = NBST_CLOSED;
469 nbp->nbp_vc = vcp;
470 nbp->nbp_sndbuf = smb_tcpsndbuf;
471 nbp->nbp_rcvbuf = smb_tcprcvbuf;
472 vcp->vc_tdata = nbp;
473 return 0;
474}
475
476static int
464smb_nbst_done(struct smb_vc *vcp, struct proc *p)
477smb_nbst_done(struct smb_vc *vcp, struct thread *td)
478{
479 struct nbpcb *nbp = vcp->vc_tdata;
480
481 if (nbp == NULL)
482 return ENOTCONN;
470 smb_nbst_disconnect(vcp, p);
483 smb_nbst_disconnect(vcp, td);
484 if (nbp->nbp_laddr)
485 free(nbp->nbp_laddr, M_SONAME);
486 if (nbp->nbp_paddr)
487 free(nbp->nbp_paddr, M_SONAME);
488 free(nbp, M_NBDATA);
489 return 0;
490}
491
492static int
480smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct proc *p)
493smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
494{
495 struct nbpcb *nbp = vcp->vc_tdata;
496 struct sockaddr_nb *snb;
497 int error, slen;
498
499 NBDEBUG("\n");
500 error = EINVAL;
501 do {

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

518 nbp->nbp_laddr = snb;
519 nbp->nbp_flags |= NBF_LOCADDR;
520 error = 0;
521 } while(0);
522 return error;
523}
524
525static int
513smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct proc *p)
526smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
527{
528 struct nbpcb *nbp = vcp->vc_tdata;
529 struct sockaddr_in sin;
530 struct sockaddr_nb *snb;
531 struct timespec ts1, ts2;
532 int error, slen;
533
534 NBDEBUG("\n");

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

544 nbp->nbp_paddr = NULL;
545 }
546 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
547 if (snb == NULL)
548 return ENOMEM;
549 nbp->nbp_paddr = snb;
550 sin = snb->snb_addrin;
551 getnanotime(&ts1);
539 error = nb_connect_in(nbp, &sin, p);
552 error = nb_connect_in(nbp, &sin, td);
553 if (error)
554 return error;
555 getnanotime(&ts2);
556 timespecsub(&ts2, &ts1);
557 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
558 ts2.tv_sec = 1;
559 nbp->nbp_timo = ts2;
560 timespecadd(&nbp->nbp_timo, &ts2);
561 timespecadd(&nbp->nbp_timo, &ts2);
562 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
550 error = nbssn_rq_request(nbp, p);
563 error = nbssn_rq_request(nbp, td);
564 if (error)
552 smb_nbst_disconnect(vcp, p);
565 smb_nbst_disconnect(vcp, td);
566 return error;
567}
568
569static int
557smb_nbst_disconnect(struct smb_vc *vcp, struct proc *p)
570smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
571{
572 struct nbpcb *nbp = vcp->vc_tdata;
573 struct socket *so;
574
575 if (nbp == NULL || nbp->nbp_tso == NULL)
576 return ENOTCONN;
577 if ((so = nbp->nbp_tso) != NULL) {
578 nbp->nbp_flags &= ~NBF_CONNECTED;
579 nbp->nbp_tso = (struct socket *)NULL;
580 soshutdown(so, 2);
581 soclose(so);
582 }
583 if (nbp->nbp_state != NBST_RETARGET) {
584 nbp->nbp_state = NBST_CLOSED;
585 }
586 return 0;
587}
588
589static int
577smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct proc *p)
590smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
591{
592 struct nbpcb *nbp = vcp->vc_tdata;
593 int error;
594
595 if (nbp->nbp_state != NBST_SESSION) {
596 error = ENOTCONN;
597 goto abort;
598 }
599 M_PREPEND(m0, 4, M_WAITOK);
600 if (m0 == NULL)
601 return ENOBUFS;
602 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
590 error = nb_sosend(nbp->nbp_tso, m0, 0, p);
603 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
604 return error;
605abort:
606 if (m0)
607 m_freem(m0);
608 return error;
609}
610
611
612static int
600smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct proc *p)
613smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
614{
615 struct nbpcb *nbp = vcp->vc_tdata;
616 u_int8_t rpcode;
617 int error, rplen;
618
619 nbp->nbp_flags |= NBF_RECVLOCK;
607 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, p);
620 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
621 nbp->nbp_flags &= ~NBF_RECVLOCK;
622 return error;
623}
624
625static void
626smb_nbst_timo(struct smb_vc *vcp)
627{
628 return;

--- 75 unchanged lines hidden ---