XRootD
XrdXrootdTransit.cc
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1 /******************************************************************************/
2 /* */
3 /* X r d X r o o t d T r a n s i t . c c */
4 /* */
5 /* (c) 2012 by the Board of Trustees of the Leland Stanford, Jr., University */
6 /* All Rights Reserved */
7 /* Produced by Andrew Hanushevsky for Stanford University under contract */
8 /* DE-AC02-76-SFO0515 with the Department of Energy */
9 /* */
10 /* This file is part of the XRootD software suite. */
11 /* */
12 /* XRootD is free software: you can redistribute it and/or modify it under */
13 /* the terms of the GNU Lesser General Public License as published by the */
14 /* Free Software Foundation, either version 3 of the License, or (at your */
15 /* option) any later version. */
16 /* */
17 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
18 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
19 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
20 /* License for more details. */
21 /* */
22 /* You should have received a copy of the GNU Lesser General Public License */
23 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
24 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
25 /* */
26 /* The copyright holder's institutional names and contributor's names may not */
27 /* be used to endorse or promote products derived from this software without */
28 /* specific prior written permission of the institution or contributor. */
29 /******************************************************************************/
30 
31 #include <cstring>
32 #include <unistd.h>
33 #include <sys/uio.h>
34 
35 #include "XProtocol/XProtocol.hh"
36 
37 #include "XrdSec/XrdSecEntity.hh"
38 
39 #include "Xrd/XrdBuffer.hh"
40 #include "Xrd/XrdLink.hh"
41 #include "XrdOuc/XrdOucErrInfo.hh"
42 #include "XrdOuc/XrdOucUtils.hh"
44 #include "XrdSys/XrdSysAtomics.hh"
50 
51 /******************************************************************************/
52 /* C l o b a l S y m b o l s */
53 /******************************************************************************/
54 
56 
57 #undef TRACELINK
58 #define TRACELINK Link
59 
60 #define XRD_GETNUM(x)\
61  ntohl(*(static_cast<unsigned int *>(static_cast<void *>(x))))
62 
63 /******************************************************************************/
64 /* S t a t i c M e m b e r s */
65 /******************************************************************************/
66 
67 const char *XrdXrootdTransit::reqTab = XrdXrootdTransit::ReqTable();
68 
70  XrdXrootdTransit::TranStack("TranStack",
71  "transit protocol anchor");
72 
73 /******************************************************************************/
74 /* A l l o c */
75 /******************************************************************************/
76 
78  XrdLink *linkP,
79  XrdSecEntity *seceP,
80  const char *nameP,
81  const char *protP
82  )
83 {
84  XrdXrootdTransit *xp;
85 
86 // Simply return a new transit object masquerading as a bridge
87 //
88  if (!(xp = TranStack.Pop())) xp = new XrdXrootdTransit();
89  xp->Init(rsltP, linkP, seceP, nameP, protP);
90  return xp;
91 }
92 
93 /******************************************************************************/
94 /* A t t n */
95 /******************************************************************************/
96 
97 int XrdXrootdTransit::Attn(XrdLink *lP, short *theSID, int rcode,
98  const struct iovec *ioV, int ioN, int ioL)
99 {
100  XrdXrootdTransPend *tP;
101 
102 // Find the request
103 //
104  if (!(tP = XrdXrootdTransPend::Remove(lP, *theSID)))
105  {TRACE(REQ, "Unable to find request for " <<lP->ID <<" sid=" <<*theSID);
106  return 0;
107  }
108 
109 // Resume the request as we have been waiting for the response.
110 //
111  return tP->bridge->AttnCont(tP, rcode, ioV, ioN, ioL);
112 }
113 
114 /******************************************************************************/
115 /* A t t n C o n t */
116 /******************************************************************************/
117 
118 int XrdXrootdTransit::AttnCont(XrdXrootdTransPend *tP, int rcode,
119  const struct iovec *ioV, int ioN, int ioL)
120 {
121  int rc;
122 
123 // Refresh the request structure
124 //
125  memcpy(&Request, &(tP->Pend.Request), sizeof(Request));
126  delete tP;
127  runWait = 0;
128 
129 // Reissue the request if it's a wait 0 response.
130 //
131  if (rcode==kXR_wait
132  && (!ioN || XRD_GETNUM(ioV[0].iov_base) == 0))
133  {Sched->Schedule((XrdJob *)&waitJob);
134  return 0;
135  }
136 
137 // Send off the deferred response
138 //
139  rc = Send(rcode, ioV, ioN, ioL);
140 
141 // Handle end based on current state
142 //
143  if (rc >= 0 && !runWait)
144  {if (runDone)
145  {AtomicBeg(runMutex);
146  AtomicZAP(runStatus);
147  AtomicEnd(runMutex);
148  }
149  if (reInvoke) Sched->Schedule((XrdJob *)&respJob);
150  else Link->Enable();
151  }
152 
153 // All done
154 //
155  return rc;
156 }
157 
158 /******************************************************************************/
159 /* D i s c */
160 /******************************************************************************/
161 
163 {
164  char buff[128];
165  int rc;
166 
167 // We do not allow disconnection while we are active
168 //
169  AtomicBeg(runMutex);
170  rc = AtomicInc(runStatus);
171  AtomicEnd(runMutex);
172  if (rc) return false;
173 
174 // Reconnect original protocol to the link
175 //
176  Link->setProtocol(realProt);
177 
178 // Now we need to recycle our xrootd part
179 //
180  sprintf(buff, "%s disconnection", pName);
181  XrdXrootdProtocol::Recycle(Link, time(0)-cTime, buff);
182 
183 // Now just free up our object.
184 //
185  TranStack.Push(&TranLink);
186  return true;
187 }
188 
189 /******************************************************************************/
190 /* Private: F a i l */
191 /******************************************************************************/
192 
193 bool XrdXrootdTransit::Fail(int ecode, const char *etext)
194 {
195  runError = ecode;
196  runEText = etext;
197  return true;
198 }
199 
200 /******************************************************************************/
201 /* F a t a l */
202 /******************************************************************************/
203 
204 int XrdXrootdTransit::Fatal(int rc)
205 {
208 
209  return (respObj->Error(rInfo, runError, runEText) ? rc : -1);
210 }
211 
212 /******************************************************************************/
213 /* I n i t */
214 /******************************************************************************/
215 
216 void XrdXrootdTransit::Init(XrdScheduler *schedP, int qMax, int qTTL)
217 {
218  TranStack.Set(schedP, &XrdXrootdTrace, TRACE_MEM);
219  TranStack.Set(qMax, qTTL);
220 }
221 
222 /******************************************************************************/
223 
225  XrdLink *linkP,
226  XrdSecEntity *seceP,
227  const char *nameP,
228  const char *protP
229  )
230 {
231  XrdNetAddrInfo *addrP;
232  const char *who;
233  char uname[sizeof(Request.login.username)+1];
234 
235 // Set standard stuff
236 //
237  runArgs = 0;
238  runALen = 0;
239  runABsz = 0;
240  runError = 0;
241  runStatus = 0;
242  runWait = 0;
243  runWTot = 0;
244  runWMax = 3600;
245  runWCall = false;
246  runDone = false;
247  reInvoke = false;
248  wBuff = 0;
249  wBLen = 0;
250  respObj = respP;
251  pName = protP;
252  mySID = getSID();
253 
254 // Bind the protocol to the link
255 //
256  SI->Bump(SI->Count);
257  Link = linkP;
258  Response.Set(linkP);
259  Response.Set(this);
260  strcpy(Entity.prot, "host");
261  Entity.host = (char *)linkP->Host();
262 
263 // Develop a trace identifier
264 //
265  strncpy(uname, nameP, sizeof(uname)-1);
266  uname[sizeof(uname)-1] = 0;
267  XrdOucUtils::Sanitize(uname);
268  linkP->setID(uname, mySID);
269 
270 // Place trace identifier everywhere is should be located
271 
272 // Indicate that this brige supports asynchronous responses
273 //
275 
276 // Mark the client as IPv4 if they came in as IPv4 or mapped IPv4. Note
277 // there is no way we can figure out if this is a dual-stack client.
278 //
279  addrP = Link->AddrInfo();
280  if (addrP->isIPType(XrdNetAddrInfo::IPv4) || addrP->isMapped())
282 
283 // Mark the client as being on a private net if the address is private
284 //
285  if (addrP->isPrivate()) {clientPV |= XrdOucEI::uPrip; rdType = 1;}
286  else rdType = 0;
287 
288 // Now tie the security information
289 //
290  Client = (seceP ? seceP : &Entity);
291  Client->ueid = mySID;
292  Client->tident = Client->pident = Link->ID;
293  Client->addrInfo = addrP;
294 
295 // Allocate a monitoring object, if needed for this connection and record login
296 //
297  if (Monitor.Ready())
298  {Monitor.Register(linkP->ID, linkP->Host(), protP);
299  if (Monitor.Logins())
300  {if (Monitor.Auths() && seceP) MonAuth();
301  else Monitor.Report(Monitor.Auths() ? "" : 0);
302  }
303  }
304 
305 // Complete the request ID object
306 //
307  ReqID.setID(Request.header.streamid, linkP->FDnum(), linkP->Inst());
308 
309 // Substitute our protocol for the existing one
310 //
311  realProt = linkP->setProtocol(this);
312  linkP->setProtName(protP);
313  linkP->armBridge();
314 
315 // Document this login
316 //
317  who = (seceP && seceP->name ? seceP->name : "nobody");
318  eDest.Log(SYS_LOG_01, "Bridge", Link->ID, "login as", who);
319 
320 // All done, indicate we are logged in
321 //
323  cTime = time(0);
324 
325 // Propogate a connect through the whole system
326 //
327  osFS->Connect(Client);
328 }
329 
330 /******************************************************************************/
331 /* P r o c e e d */
332 /******************************************************************************/
333 
335 {
336  int rc;
337 
338 // If we were interrupted in a reinvoke state, resume that state.
339 //
340  if (reInvoke) rc = Process(Link);
341  else rc = 0;
342 
343 // Handle ending status
344 //
345  if (rc >= 0) Link->Enable();
346  else if (rc != -EINPROGRESS) Link->Close();
347 }
348 
349 /******************************************************************************/
350 /* P r o c e s s */
351 /******************************************************************************/
352 
354 {
355  int rc;
356 
357 // This entry is serialized via link processing and data is now available.
358 // One of the following will be returned.
359 //
360 // < 0 -> Stop getting requests,
361 // -EINPROGRESS leave link disabled but otherwise all is well
362 // -n Error, disable and close the link
363 // = 0 -> OK, get next request, if allowed, o/w enable the link
364 // > 0 -> Slow link, stop getting requests and enable the link
365 //
366 
367 // Reflect data is present to the underlying protocol and if Run() has been
368 // called we need to dispatch that request. This may be iterative.
369 //
370 do{rc = realProt->Process((reInvoke ? 0 : lp));
371  if (rc >= 0 && runStatus)
372  {reInvoke = (rc == 0);
373  if (runError) rc = Fatal(rc);
374  else {runDone = false;
375  rc = (Resume ? XrdXrootdProtocol::Process(lp) : Process2());
376  if (rc >= 0)
377  {if (runWait) rc = -EINPROGRESS;
378  if (!runDone) return rc;
379  AtomicBeg(runMutex);
380  AtomicZAP(runStatus);
381  AtomicEnd(runMutex);
382  }
383  }
384  } else reInvoke = false;
385  } while(rc >= 0 && reInvoke);
386 
387 // Make sure that we indicate that we are no longer active
388 //
389  if (runStatus)
390  {AtomicBeg(runMutex);
391  AtomicZAP(runStatus);
392  AtomicEnd(runMutex);
393  }
394 
395 // All done
396 //
397  return (rc ? rc : 1);
398 }
399 
400 /******************************************************************************/
401 /* R e c y c l e */
402 /******************************************************************************/
403 
404 void XrdXrootdTransit::Recycle(XrdLink *lp, int consec, const char *reason)
405 {
406 
407 // Set ourselves as active so we can't get more requests
408 //
409  AtomicBeg(runMutex);
410  AtomicInc(runStatus);
411  AtomicEnd(runMutex);
412 
413 // If we were active then we will need to quiesce before dismantling ourselves.
414 // Note that Recycle() can only be called if the link is enabled. So, this bit
415 // of code is improbable but we check it anyway.
416 //
417  if (runWait > 0) Sched->Cancel(&waitJob);
418 
419 // First we need to recycle the real protocol
420 //
421  if (realProt) realProt->Recycle(lp, consec, reason);
422 
423 // Now we need to recycle our xrootd part
424 //
425  XrdXrootdProtocol::Recycle(lp, consec, reason);
426 
427 // Release the argument buffer
428 //
429  if (runArgs) {free(runArgs); runArgs = 0;}
430 
431 // Delete all pending requests
432 //
434 
435 // Now just free up our object.
436 //
437  TranStack.Push(&TranLink);
438 }
439 
440 /******************************************************************************/
441 /* R e d r i v e */
442 /******************************************************************************/
443 
445 {
446  static int eCode = htonl(kXR_NoMemory);
447  static char eText[] = "Insufficent memory to re-issue request";
448  static struct iovec ioV[] = {{(char *)&eCode,sizeof(eCode)},
449  {(char *)&eText,sizeof(eText)}};
450  int rc;
451 
452 // Update wait statistics
453 //
454  runWTot += runWait;
455  runWait = 0;
456 
457 // While we are running asynchronously, there is no way that this object can
458 // be deleted while a timer is outstanding as the link has been disabled. So,
459 // we can reissue the request with little worry.
460 //
461  if (!runALen || RunCopy(runArgs, runALen)) {
462  do{rc = Process2();
463  if (rc == 0) {
464  rc = realProt->Process(NULL);
465  }
466  } while((rc == 0) && !runError && !runWait);
467  }
468  else rc = Send(kXR_error, ioV, 2, 0);
469 
470 // Defer the request if need be
471 //
472  if (rc >= 0 && runWait) return;
473  runWTot = 0;
474 
475 // Indicate we are no longer active
476 //
477  if (runStatus)
478  {AtomicBeg(runMutex);
479  AtomicZAP(runStatus);
480  AtomicEnd(runMutex);
481  }
482 
483 // If the link needs to be terminated, terminate the link. Otherwise, we can
484 // enable the link for new requests at this point.
485 //
486  if (rc < 0) Link->Close();
487  else Link->Enable();
488 }
489 
490 /******************************************************************************/
491 /* R e q T a b l e */
492 /******************************************************************************/
493 
494 #define KXR_INDEX(x) x-kXR_auth
495 
497 {
498  static char rTab[kXR_truncate-kXR_auth+1];
499 
500 // Initialize the table
501 //
502  memset(rTab, 0, sizeof(rTab));
503  rTab[KXR_INDEX(kXR_chmod)] = 1;
504  rTab[KXR_INDEX(kXR_close)] = 1;
505  rTab[KXR_INDEX(kXR_dirlist)] = 1;
506  rTab[KXR_INDEX(kXR_locate)] = 1;
507  rTab[KXR_INDEX(kXR_mkdir)] = 1;
508  rTab[KXR_INDEX(kXR_mv)] = 1;
509  rTab[KXR_INDEX(kXR_open)] = 1;
510  rTab[KXR_INDEX(kXR_prepare)] = 1;
511  rTab[KXR_INDEX(kXR_protocol)] = 1;
512  rTab[KXR_INDEX(kXR_query)] = 1;
513  rTab[KXR_INDEX(kXR_read)] = 2;
514  rTab[KXR_INDEX(kXR_readv)] = 2;
515  rTab[KXR_INDEX(kXR_rm)] = 1;
516  rTab[KXR_INDEX(kXR_rmdir)] = 1;
517  rTab[KXR_INDEX(kXR_set)] = 1;
518  rTab[KXR_INDEX(kXR_stat)] = 1;
519  rTab[KXR_INDEX(kXR_statx)] = 1;
520  rTab[KXR_INDEX(kXR_sync)] = 1;
521  rTab[KXR_INDEX(kXR_truncate)] = 1;
522  rTab[KXR_INDEX(kXR_write)] = 2;
523 
524 // Now return the address
525 //
526  return rTab;
527 }
528 
529 /******************************************************************************/
530 /* Private: R e q W r i t e */
531 /******************************************************************************/
532 
533 bool XrdXrootdTransit::ReqWrite(char *xdataP, int xdataL)
534 {
535 
536 // Make sure we always transit to the resume point
537 //
538  myBlen = 0;
539 
540 // If nothing was read, then this is a straight-up write
541 //
542  if (!xdataL || !xdataP || !Request.header.dlen)
543  {Resume = 0; wBuff = xdataP; wBLen = xdataL;
544  return true;
545  }
546 
547 // Partial data was read, we may have to split this between a direct write
548 // and a network read/write -- somewhat complicated.
549 //
550  myBuff = wBuff = xdataP;
551  myBlast = wBLen = xdataL;
553  return true;
554 }
555 
556 /******************************************************************************/
557 /* R u n */
558 /******************************************************************************/
559 
560 bool XrdXrootdTransit::Run(const char *xreqP, char *xdataP, int xdataL)
561 {
562  int movLen, rc;
563 
564 // We do not allow re-entry if we are curently processing a request.
565 // It will be reset, as need, when a response is effected.
566 //
567  AtomicBeg(runMutex);
568  rc = AtomicInc(runStatus);
569  AtomicEnd(runMutex);
570  if (rc) return false;
571 
572 // Copy the request header
573 //
574  memcpy((void *)&Request, (void *)xreqP, sizeof(Request));
575 
576 // Validate that we can actually handle this request
577 //
579  if (Request.header.requestid & 0x8000
580  || Request.header.requestid > static_cast<kXR_unt16>(kXR_truncate)
581  || !reqTab[Request.header.requestid - kXR_auth])
582  return Fail(kXR_Unsupported, "Unsupported bridge request");
583 
584 // Validate the data length
585 //
587  if (Request.header.dlen < 0)
588  return Fail(kXR_ArgInvalid, "Invalid request data length");
589 
590 // Copy the stream id and trace this request
591 //
593  TRACEP(REQ, "Bridge req=" <<Request.header.requestid
594  <<" dlen=" <<Request.header.dlen <<" blen=" <<xdataL);
595 
596 // If this is a write request, we will need to do a lot more
597 //
598  if (Request.header.requestid == kXR_write) return ReqWrite(xdataP, xdataL);
599 
600 // Obtain any needed buffer and handle any existing data arguments. Also, we
601 // need to keep a shadow copy of the request arguments should we get a wait
602 // and will need to re-issue the request (the server mangles the args).
603 //
604  if (Request.header.dlen)
605  {movLen = (xdataL < Request.header.dlen ? xdataL : Request.header.dlen);
606  if (!RunCopy(xdataP, movLen)) return true;
607  if (!runArgs || movLen > runABsz)
608  {if (runArgs) free(runArgs);
609  if (!(runArgs = (char *)malloc(movLen)))
610  return Fail(kXR_NoMemory, "Insufficient memory");
611  runABsz = movLen;
612  }
613  memcpy(runArgs, xdataP, movLen); runALen = movLen;
614  if ((myBlen = Request.header.dlen - movLen))
615  {myBuff = argp->buff + movLen;
617  return true;
618  }
619  } else runALen = 0;
620 
621 // If we have all the data, indicate request accepted.
622 //
623  runError = 0;
624  Resume = 0;
625  return true;
626 }
627 
628 /******************************************************************************/
629 /* Privae: R u n C o p y */
630 /******************************************************************************/
631 
632 bool XrdXrootdTransit::RunCopy(char *buffP, int buffL)
633 {
634 
635 // Allocate a buffer if we do not have one or it is too small
636 //
637  if (!argp || Request.header.dlen+1 > argp->bsize)
638  {if (argp) BPool->Release(argp);
639  if (!(argp = BPool->Obtain(Request.header.dlen+1)))
640  {Fail(kXR_ArgTooLong, "Request argument too long"); return false;}
641  hcNow = hcPrev; halfBSize = argp->bsize >> 1;
642  }
643 
644 // Copy the arguments to the buffer
645 //
646  memcpy(argp->buff, buffP, buffL);
647  argp->buff[buffL] = 0;
648  return true;
649 }
650 
651 /******************************************************************************/
652 /* S e n d */
653 /******************************************************************************/
654 
655 int XrdXrootdTransit::Send(int rcode, const struct iovec *ioV, int ioN, int ioL)
656 {
659  const char *eMsg;
660  int rc;
661  bool aOK;
662 
663 // Invoke the result object (we initially assume this is the final result)
664 //
665  runDone = true;
666  switch(rcode)
667  {case kXR_error:
668  rc = XRD_GETNUM(ioV[0].iov_base);
669  eMsg = (ioN < 2 ? "" : (const char *)ioV[1].iov_base);
670  if (wBuff) respObj->Free(rInfo, wBuff, wBLen);
671  aOK = respObj->Error(rInfo, rc, eMsg);
672  break;
673  case kXR_ok:
674  if (wBuff) respObj->Free(rInfo, wBuff, wBLen);
675  aOK = (ioN ? respObj->Data(rInfo, ioV, ioN, ioL, true)
676  : respObj->Done(rInfo));
677  break;
678  case kXR_oksofar:
679  aOK = respObj->Data(rInfo, ioV, ioN, ioL, false);
680  runDone = false;
681  break;
682  case kXR_redirect:
683  if (wBuff) respObj->Free(rInfo, wBuff, wBLen);
684  rc = XRD_GETNUM(ioV[0].iov_base);
685  aOK = respObj->Redir(rInfo,rc,(const char *)ioV[1].iov_base);
686  break;
687  case kXR_wait:
688  return Wait(rInfo, ioV, ioN, ioL);
689  break;
690  case kXR_waitresp:
691  runDone = false;
692  return WaitResp(rInfo, ioV, ioN, ioL);
693  break;
694  default: if (wBuff) respObj->Free(rInfo, wBuff, wBLen);
695  aOK = respObj->Error(rInfo, kXR_ServerError,
696  "internal logic error");
697  break;
698  };
699 
700 // All done
701 //
702  return (aOK ? 0 : -1);
703 }
704 
705 /******************************************************************************/
706 
707 int XrdXrootdTransit::Send(long long offset, int dlen, int fdnum)
708 {
711  offset, dlen, fdnum);
712 
713 // Effect callback (this is always a final result)
714 //
715  runDone = true;
716  return (respObj->File(sfInfo, dlen) ? 0 : -1);
717 }
718 
719 /******************************************************************************/
720 
721 int XrdXrootdTransit::Send(XrdOucSFVec *sfvec, int sfvnum, int dlen)
722 {
725  sfvec, sfvnum, dlen);
726 
727 // Effect callback (this is always a final result)
728 //
729  runDone = true;
730  return (respObj->File(sfInfo, dlen) ? 0 : -1);
731 }
732 
733 /******************************************************************************/
734 /* Private: W a i t */
735 /******************************************************************************/
736 
737 int XrdXrootdTransit::Wait(XrdXrootd::Bridge::Context &rInfo,
738  const struct iovec *ioV, int ioN, int ioL)
739 {
740  const char *eMsg;
741 
742 // Trace this request if need be
743 //
744  runWait = XRD_GETNUM(ioV[0].iov_base);
745  eMsg = (ioN < 2 ? "reason unknown" : (const char *)ioV[1].iov_base);
746 
747 // Check if the protocol wants to handle all waits
748 //
749  if (runWMax <= 0)
750  {int wtime = runWait;
751  runWait = 0;
752  return (respObj->Wait(rInfo, wtime, eMsg) ? 0 : -1);
753  }
754 
755 // Check if we have exceeded the maximum wait time
756 //
757  if (runWTot >= runWMax)
758  {runDone = true;
759  runWait = 0;
760  return (respObj->Error(rInfo, kXR_Cancelled, eMsg) ? 0 : -1);
761  }
762 
763 // Readjust wait time
764 //
765  if (runWait > runWMax) runWait = runWMax;
766 
767 // Check if the protocol wants a wait notification
768 //
769  if (runWCall && !(respObj->Wait(rInfo, runWait, eMsg))) return -1;
770 
771 // All done, schedule the wait
772 //
773  TRACEP(REQ, "Bridge delaying request " <<runWait <<" sec (" <<eMsg <<")");
774  Sched->Schedule((XrdJob *)&waitJob, time(0)+runWait);
775  return 0;
776 }
777 
778 /******************************************************************************/
779 /* Private: W a i t R e s p */
780 /******************************************************************************/
781 
782 int XrdXrootdTransit::WaitResp(XrdXrootd::Bridge::Context &rInfo,
783  const struct iovec *ioV, int ioN, int ioL)
784 {
785  XrdXrootdTransPend *trP;
786  const char *eMsg;
787  int wTime;
788 
789 // Trace this request if need be
790 //
791  wTime = XRD_GETNUM(ioV[0].iov_base);
792  eMsg = (ioN < 2 ? "reason unknown" : (const char *)ioV[1].iov_base);
793  TRACEP(REQ, "Bridge waiting for resp; sid=" <<rInfo.sID.num
794  <<" wt=" <<wTime <<" (" <<eMsg <<")");
795 
796 // We would issue callback to see how we should handle this. However, we can't
797 // predictably handle a waitresp. So that means we will just wait for a resp.
798 //
799 // XrdXrootd::Bridge::Result *newCBP = respObj->WaitResp(rInfo, runWait, eMsg);
800 
801 // Save the current state
802 //
803  trP = new XrdXrootdTransPend(Link, this, &Request);
804  trP->Queue();
805 
806 // Effect a wait
807 //
808  runWait = -1;
809  return 0;
810 }
@ kXR_ArgInvalid
Definition: XProtocol.hh:990
@ kXR_Unsupported
Definition: XProtocol.hh:1003
@ kXR_Cancelled
Definition: XProtocol.hh:1007
@ kXR_ServerError
Definition: XProtocol.hh:1002
@ kXR_ArgTooLong
Definition: XProtocol.hh:992
@ kXR_NoMemory
Definition: XProtocol.hh:998
kXR_char streamid[2]
Definition: XProtocol.hh:156
kXR_char username[8]
Definition: XProtocol.hh:396
@ kXR_waitresp
Definition: XProtocol.hh:906
@ kXR_redirect
Definition: XProtocol.hh:904
@ kXR_oksofar
Definition: XProtocol.hh:900
@ kXR_ok
Definition: XProtocol.hh:899
@ kXR_wait
Definition: XProtocol.hh:905
@ kXR_error
Definition: XProtocol.hh:903
struct ClientRequestHdr header
Definition: XProtocol.hh:846
struct ClientLoginRequest login
Definition: XProtocol.hh:857
kXR_unt16 requestid
Definition: XProtocol.hh:157
@ kXR_read
Definition: XProtocol.hh:125
@ kXR_open
Definition: XProtocol.hh:122
@ kXR_readv
Definition: XProtocol.hh:137
@ kXR_mkdir
Definition: XProtocol.hh:120
@ kXR_sync
Definition: XProtocol.hh:128
@ kXR_chmod
Definition: XProtocol.hh:114
@ kXR_dirlist
Definition: XProtocol.hh:116
@ kXR_rm
Definition: XProtocol.hh:126
@ kXR_query
Definition: XProtocol.hh:113
@ kXR_write
Definition: XProtocol.hh:131
@ kXR_auth
Definition: XProtocol.hh:112
@ kXR_set
Definition: XProtocol.hh:130
@ kXR_rmdir
Definition: XProtocol.hh:127
@ kXR_statx
Definition: XProtocol.hh:134
@ kXR_truncate
Definition: XProtocol.hh:140
@ kXR_protocol
Definition: XProtocol.hh:118
@ kXR_mv
Definition: XProtocol.hh:121
@ kXR_stat
Definition: XProtocol.hh:129
@ kXR_locate
Definition: XProtocol.hh:139
@ kXR_close
Definition: XProtocol.hh:115
@ kXR_prepare
Definition: XProtocol.hh:133
@ kXR_asyncap
Definition: XProtocol.hh:378
@ kXR_ver002
Definition: XProtocol.hh:386
kXR_int32 dlen
Definition: XProtocol.hh:159
unsigned short kXR_unt16
Definition: XPtypes.hh:67
#define eMsg(x)
#define AtomicInc(x)
#define AtomicBeg(Mtx)
#define AtomicZAP(x)
#define AtomicEnd(Mtx)
const int SYS_LOG_01
Definition: XrdSysError.hh:72
#define TRACE_MEM
Definition: XrdTrace.hh:38
#define TRACE(act, x)
Definition: XrdTrace.hh:63
#define XRD_LOGGEDIN
#define TRACEP(act, x)
XrdSysTrace XrdXrootdTrace
#define XRD_GETNUM(x)
#define KXR_INDEX(x)
void Release(XrdBuffer *bp)
Definition: XrdBuffer.cc:221
XrdBuffer * Obtain(int bsz)
Definition: XrdBuffer.cc:140
int bsize
Definition: XrdBuffer.hh:46
char * buff
Definition: XrdBuffer.hh:45
Definition: XrdJob.hh:43
bool isMapped() const
bool isIPType(IPType ipType) const
void Set(int inQMax, time_t agemax=1800)
Definition: XrdObject.icc:90
void Push(XrdObject< T > *Node)
Definition: XrdObject.hh:101
T * Pop()
Definition: XrdObject.hh:93
void Bump(int &val)
Definition: XrdOucStats.hh:47
static void Sanitize(char *instr, char subc='_')
virtual void Recycle(XrdLink *lp=0, int consec=0, const char *reason=0)=0
virtual int Process(XrdLink *lp)=0
void Schedule(XrdJob *jp)
void Cancel(XrdJob *jp)
const char * pident
Trace identifier (originator)
Definition: XrdSecEntity.hh:82
XrdNetAddrInfo * addrInfo
Entity's connection details.
Definition: XrdSecEntity.hh:80
const char * tident
Trace identifier always preset.
Definition: XrdSecEntity.hh:81
char prot[XrdSecPROTOIDSIZE]
Auth protocol used (e.g. krb5)
Definition: XrdSecEntity.hh:67
char * name
Entity's name.
Definition: XrdSecEntity.hh:69
unsigned int ueid
Unique ID of entity instance.
Definition: XrdSecEntity.hh:79
char * host
Entity's host name dnr dependent.
Definition: XrdSecEntity.hh:70
virtual void Connect(const XrdSecEntity *client=0)
void Log(int mask, const char *esfx, const char *text1, const char *text2=0, const char *text3=0)
Definition: XrdSysError.hh:133
void Register(const char *Uname, const char *Hname, const char *Pname, unsigned int xSID=0)
void Report(const char *Info)
static XrdXrootdStats * SI
XrdSecEntity * Client
static XrdSysError & eDest
static unsigned int getSID()
XrdXrootdMonitor::User Monitor
int(XrdXrootdProtocol::* Resume)()
static XrdScheduler * Sched
int Process(XrdLink *lp) override
void Recycle(XrdLink *lp, int consec, const char *reason) override
XrdXrootdResponse Response
static XrdBuffManager * BPool
XrdXrootdReqID ReqID
static XrdSfsFileSystem * osFS
void setID(unsigned long long id)
void Set(XrdLink *lp)
static XrdXrootdTransPend * Remove(XrdLink *lP, short sid)
XrdXrootdTransit * bridge
union XrdXrootdTransPend::@185 Pend
static void Clear(XrdXrootdTransit *trP)
bool Run(const char *xreqP, char *xdataP=0, int xdataL=0)
Inject an xrootd request into the protocol stack.
static const char * ReqTable()
Initialize the valid request table.
void Redrive()
Redrive a request after a wait.
int Send(int rcode, const struct iovec *ioVec, int ioNum, int ioLen)
Handle request data response.
void Recycle(XrdLink *lp, int consec, const char *reason)
Handle link shutdown.
static void Init(XrdScheduler *schedP, int qMax, int qTTL)
Perform one-time initialization.
static XrdXrootdTransit * Alloc(XrdXrootd::Bridge::Result *respP, XrdLink *linkP, XrdSecEntity *seceP, const char *nameP, const char *protP)
Get a new transit object.
static int Attn(XrdLink *lP, short *theSID, int rcode, const struct iovec *ioVec, int ioNum, int ioLen)
Handle attention response (i.e. async response)
XrdXrootdTransit()
Constructor & Destructor.
void Proceed()
Resume processing after a waitresp completion.
bool Disc()
Handle dismantlement.
int Process(XrdLink *lp)
Handle link activation (replaces parent activation).
union XrdXrootd::Bridge::Context::@162 sID
associated request stream ID
virtual int File(Bridge::Context &info, int dlen)=0
virtual bool Data(Bridge::Context &info, const struct iovec *iovP, int iovN, int iovL, bool final)=0
virtual bool Error(Bridge::Context &info, int ecode, const char *etext)=0
virtual bool Done(Bridge::Context &info)=0
the result context
virtual bool Redir(Bridge::Context &info, int port, const char *hname)=0
virtual bool Wait(Bridge::Context &info, int wtime, const char *wtext)
virtual void Free(Bridge::Context &info, char *buffP, int buffL)
XrdScheduler * schedP
static const int uIPv4
ucap: Supports read redirects
static const int uPrip