2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
25 osi_rwlock_t cm_volumeLock;
28 cm_ValidateVolume(void)
33 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
34 if ( volp->magic != CM_VOLUME_MAGIC ) {
35 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
36 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
39 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
40 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
41 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
44 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
45 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
46 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
49 if ( count != 0 && volp == cm_data.allVolumesp ||
50 count > cm_data.maxVolumes ) {
51 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
52 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
57 if ( count != cm_data.currentVolumes ) {
58 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
59 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
67 cm_ShutdownVolume(void)
71 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
73 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
74 if (volp->vol[volType].ID)
75 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
77 volp->cbExpiresRO = 0;
78 volp->cbServerpRO = NULL;
79 lock_FinalizeRWLock(&volp->rw);
85 void cm_InitVolume(int newFile, long maxVols)
87 static osi_once_t once;
89 if (osi_Once(&once)) {
90 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
93 cm_data.allVolumesp = NULL;
94 cm_data.currentVolumes = 0;
95 cm_data.maxVolumes = maxVols;
96 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
104 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
108 volp->flags |= CM_VOLUMEFLAG_RESET;
109 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
110 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
111 volp->vol[volType].state = vl_unknown;
112 volp->vol[volType].serversp = NULL;
113 if (volp->vol[volType].ID)
114 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
116 volp->cbExpiresRO = 0;
117 volp->cbServerpRO = NULL;
125 /* returns true if the id is a decimal integer, in which case we interpret it
126 * as an id. make the cache manager much simpler.
127 * Stolen from src/volser/vlprocs.c */
129 cm_VolNameIsID(char *aname)
132 while (tc = *aname++) {
133 if (tc > '9' || tc < '0')
141 * Update a volume. Caller holds a write lock on the volume (volp->rw).
144 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
145 * Yes, we support multihomed fileservers.
146 * Since before we got the code from IBM.
147 * But to find out about multiple addresses on a multihomed server, you need
148 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
149 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
150 * address per server.
151 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
152 * see src/afs/afs_volume.c, paying particular attention to
153 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
154 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
155 * thanks. The windows client calls the 0 versions.
156 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
158 * By not using the N versions, you only get up to 8 sites instead of 13.
159 * By not using the U versions, you don't get to know about multihomed serve
160 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
161 * Of course, you probably want to support the older versions for backward
162 * compatibility. If you do that, you need to call the newest interface
163 * first, and fall back to successively older versions if you get
167 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
173 cm_serverRef_t *tsrp;
175 struct sockaddr_in tsockAddr;
178 struct vldbentry vldbEntry;
179 struct nvldbentry nvldbEntry;
181 struct uvldbentry uvldbEntry;
186 enum volstatus rwNewstate = vl_online;
187 enum volstatus roNewstate = vl_online;
188 enum volstatus bkNewstate = vl_online;
189 #ifdef AFS_FREELANCE_CLIENT
195 lock_AssertWrite(&volp->rw);
198 * If the last volume update was in the last five
199 * minutes and it did not exist, then avoid the RPC
200 * and return No Such Volume immediately.
203 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
204 (now < volp->lastUpdateTime + 600))
206 return CM_ERROR_NOSUCHVOLUME;
209 #ifdef AFS_FREELANCE_CLIENT
210 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
213 memset(&vldbEntry, 0, sizeof(vldbEntry));
214 vldbEntry.flags |= VLF_RWEXISTS;
215 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
221 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
222 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
223 volp->cellp->name, volp->namep, volp->flags);
224 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
225 lock_ObtainWrite(&volp->rw);
226 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
227 volp->cellp->name, volp->namep, volp->flags);
228 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
229 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
230 volp->cellp->name, volp->namep, volp->flags);
231 osi_Wakeup((LONG_PTR) &volp->flags);
236 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
237 lock_ReleaseWrite(&volp->rw);
239 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
240 cm_UpdateCell(cellp, 0);
242 /* now we have volume structure locked and held; make RPC to fill it */
243 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
244 osi_LogSaveString(afsd_logp,volp->cellp->name),
245 osi_LogSaveString(afsd_logp,volp->namep));
247 struct rx_connection * rxconnp;
249 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
253 rxconnp = cm_GetRxConn(connp);
255 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
257 if ( code == RXGEN_OPCODE )
260 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
263 if ( code == RXGEN_OPCODE ) {
264 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
267 rx_PutConnection(rxconnp);
268 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
269 code = cm_MapVLRPCError(code, reqp);
271 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
272 osi_LogSaveString(afsd_logp,volp->cellp->name),
273 osi_LogSaveString(afsd_logp,volp->namep), code);
275 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
276 osi_LogSaveString(afsd_logp,volp->cellp->name),
277 osi_LogSaveString(afsd_logp,volp->namep));
280 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
281 * does not exist and is not a numeric string but there might exist a .readonly volume.
282 * If the base name doesn't exist we will not care about the .backup that might be left
283 * behind since there should be no method to access it.
285 if (code == CM_ERROR_NOSUCHVOLUME &&
286 _atoi64(volp->namep) == 0 &&
287 volp->vol[RWVOL].ID == 0 &&
288 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
289 char name[VL_MAXNAMELEN];
291 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
293 /* now we have volume structure locked and held; make RPC to fill it */
294 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
295 osi_LogSaveString(afsd_logp,volp->cellp->name),
296 osi_LogSaveString(afsd_logp,name));
298 struct rx_connection * rxconnp;
300 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
304 rxconnp = cm_GetRxConn(connp);
306 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
308 if ( code == RXGEN_OPCODE )
311 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
314 if ( code == RXGEN_OPCODE ) {
315 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
318 rx_PutConnection(rxconnp);
319 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
320 code = cm_MapVLRPCError(code, reqp);
322 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
323 osi_LogSaveString(afsd_logp,volp->cellp->name),
324 osi_LogSaveString(afsd_logp,name), code);
326 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
327 osi_LogSaveString(afsd_logp,volp->cellp->name),
328 osi_LogSaveString(afsd_logp,name));
331 lock_ObtainWrite(&volp->rw);
338 afs_int32 serverNumber[NMAXNSERVERS];
339 afs_int32 serverFlags[NMAXNSERVERS];
340 afsUUID serverUUID[NMAXNSERVERS];
341 afs_int32 rwServers_alldown = 1;
342 afs_int32 roServers_alldown = 1;
343 afs_int32 bkServers_alldown = 1;
344 char name[VL_MAXNAMELEN];
346 #ifdef AFS_FREELANCE_CLIENT
348 rwServers_alldown = 0;
351 /* clear out old bindings */
352 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
353 if (volp->vol[volType].serversp)
354 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
357 memset(serverUUID, 0, sizeof(serverUUID));
361 flags = vldbEntry.flags;
362 nServers = vldbEntry.nServers;
363 rwID = vldbEntry.volumeId[0];
364 roID = vldbEntry.volumeId[1];
365 bkID = vldbEntry.volumeId[2];
366 for ( i=0; i<nServers; i++ ) {
367 serverFlags[i] = vldbEntry.serverFlags[i];
368 serverNumber[i] = vldbEntry.serverNumber[i];
370 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
371 name[VL_MAXNAMELEN - 1] = '\0';
374 flags = nvldbEntry.flags;
375 nServers = nvldbEntry.nServers;
376 rwID = nvldbEntry.volumeId[0];
377 roID = nvldbEntry.volumeId[1];
378 bkID = nvldbEntry.volumeId[2];
379 for ( i=0; i<nServers; i++ ) {
380 serverFlags[i] = nvldbEntry.serverFlags[i];
381 serverNumber[i] = nvldbEntry.serverNumber[i];
383 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
384 name[VL_MAXNAMELEN - 1] = '\0';
388 flags = uvldbEntry.flags;
389 nServers = uvldbEntry.nServers;
390 rwID = uvldbEntry.volumeId[0];
391 roID = uvldbEntry.volumeId[1];
392 bkID = uvldbEntry.volumeId[2];
393 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
394 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
395 serverFlags[j] = uvldbEntry.serverFlags[i];
396 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
399 afs_uint32 * addrp, nentries, code, unique;
401 ListAddrByAttributes attrs;
404 memset(&attrs, 0, sizeof(attrs));
405 attrs.Mask = VLADDR_UUID;
406 attrs.uuid = uvldbEntry.serverNumber[i];
407 memset(&uuid, 0, sizeof(uuid));
408 memset(&addrs, 0, sizeof(addrs));
411 struct rx_connection *rxconnp;
413 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
417 rxconnp = cm_GetRxConn(connp);
418 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
419 rx_PutConnection(rxconnp);
420 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
423 code = cm_MapVLRPCError(code, reqp);
424 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
428 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
430 addrp = addrs.bulkaddrs_val;
431 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
432 serverFlags[j] = uvldbEntry.serverFlags[i];
433 serverNumber[j] = addrp[k];
434 serverUUID[j] = uuid;
437 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
440 code = CM_ERROR_INVAL;
443 nServers = j; /* update the server count */
444 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
445 name[VL_MAXNAMELEN - 1] = '\0';
450 /* decode the response */
451 lock_ObtainWrite(&cm_volumeLock);
452 if (cm_VolNameIsID(volp->namep)) {
457 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
458 name[len - 7] = '\0';
459 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
460 name[len - 9] = '\0';
463 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
464 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
466 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
467 cm_RemoveVolumeFromNameHashTable(volp);
469 strcpy(volp->namep, name);
471 cm_AddVolumeToNameHashTable(volp);
474 if (flags & VLF_DFSFILESET) {
475 volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
476 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
477 osi_LogSaveString(afsd_logp, volp->namep));
480 if (flags & VLF_RWEXISTS) {
481 if (volp->vol[RWVOL].ID != rwID) {
482 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
483 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
484 volp->vol[RWVOL].ID = rwID;
485 cm_AddVolumeToIDHashTable(volp, RWVOL);
488 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
489 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
490 volp->vol[RWVOL].ID = 0;
492 if (flags & VLF_ROEXISTS) {
493 if (volp->vol[ROVOL].ID != roID) {
494 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
495 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
496 volp->vol[ROVOL].ID = roID;
497 cm_AddVolumeToIDHashTable(volp, ROVOL);
500 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
501 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
502 volp->vol[ROVOL].ID = 0;
504 if (flags & VLF_BACKEXISTS) {
505 if (volp->vol[BACKVOL].ID != bkID) {
506 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
507 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
508 volp->vol[BACKVOL].ID = bkID;
509 cm_AddVolumeToIDHashTable(volp, BACKVOL);
512 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
513 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
514 volp->vol[BACKVOL].ID = 0;
516 lock_ReleaseWrite(&cm_volumeLock);
517 for (i=0; i<nServers; i++) {
518 /* create a server entry */
519 tflags = serverFlags[i];
520 if (tflags & VLSF_DONTUSE)
522 tsockAddr.sin_port = htons(7000);
523 tsockAddr.sin_family = AF_INET;
524 tempAddr = htonl(serverNumber[i]);
525 tsockAddr.sin_addr.s_addr = tempAddr;
526 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
527 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
529 * Check to see if the uuid of the server we know at this address
530 * matches the uuid of the server we are being told about by the
531 * vlserver. If not, ...?
533 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
534 char uuid1[128], uuid2[128];
537 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
538 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
539 afs_inet_ntoa_r(serverNumber[i], hoststr);
541 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
542 osi_LogSaveString(afsd_logp, uuid1),
543 osi_LogSaveString(afsd_logp, uuid2),
544 osi_LogSaveString(afsd_logp, hoststr));
549 * cm_NewServer will probe the file server which in turn will
550 * update the state on the volume group object. Do not probe
551 * in this thread. It will block the thread and can result in
552 * a recursive call to cm_UpdateVolumeLocation().
554 lock_ReleaseWrite(&volp->rw);
555 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
556 lock_ObtainWrite(&volp->rw);
558 osi_assertx(tsp != NULL, "null cm_server_t");
561 * if this server was created by fs setserverprefs
562 * then it won't have either a cell assignment or
567 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
568 !afs_uuid_is_nil(&serverUUID[i])) {
569 tsp->uuid = serverUUID[i];
570 tsp->flags |= CM_SERVERFLAG_UUID;
573 /* and add it to the list(s). */
575 * Each call to cm_NewServerRef() increments the
576 * ref count of tsp. These reference will be dropped,
577 * if and when the volume is reset; see reset code
578 * earlier in this function.
580 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
581 tsrp = cm_NewServerRef(tsp, rwID);
582 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
584 lock_ObtainWrite(&cm_serverLock);
585 tsrp->refCount--; /* drop allocation reference */
586 lock_ReleaseWrite(&cm_serverLock);
588 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
589 rwServers_alldown = 0;
591 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
592 tsrp = cm_NewServerRef(tsp, roID);
593 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
594 lock_ObtainWrite(&cm_serverLock);
595 tsrp->refCount--; /* drop allocation reference */
596 lock_ReleaseWrite(&cm_serverLock);
599 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
600 roServers_alldown = 0;
602 /* We don't use VLSF_BACKVOL !?! */
603 /* Because only the backup on the server holding the RW
604 * volume can be valid. This check prevents errors if a
605 * RW is moved but the old backup is not removed.
607 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
608 tsrp = cm_NewServerRef(tsp, bkID);
609 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
610 lock_ObtainWrite(&cm_serverLock);
611 tsrp->refCount--; /* drop allocation reference */
612 lock_ReleaseWrite(&cm_serverLock);
614 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
615 bkServers_alldown = 0;
617 /* Drop the reference obtained by cm_FindServer() */
624 * If the first n servers have the same ipRank, then we
625 * randomly pick one among them and move it to the beginning.
626 * We don't bother to re-order the whole list because
627 * the rest of the list is used only if the first server is
628 * down. We only do this for the RO list; we assume the other
629 * lists are length 1.
632 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
635 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
636 roNewstate = roServers_alldown ? vl_alldown : vl_online;
637 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
639 volp->flags &= ~CM_VOLUMEFLAG_NOEXIST;
640 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
641 volp->flags |= CM_VOLUMEFLAG_NOEXIST;
643 rwNewstate = roNewstate = bkNewstate = vl_alldown;
646 if (volp->vol[RWVOL].state != rwNewstate) {
647 if (volp->vol[RWVOL].ID)
648 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
649 volp->vol[RWVOL].state = rwNewstate;
651 if (volp->vol[ROVOL].state != roNewstate) {
652 if (volp->vol[ROVOL].ID)
653 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
654 volp->vol[ROVOL].state = roNewstate;
656 if (volp->vol[BACKVOL].state != bkNewstate) {
657 if (volp->vol[BACKVOL].ID)
658 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
659 volp->vol[BACKVOL].state = bkNewstate;
662 volp->lastUpdateTime = time(NULL);
665 volp->flags &= ~CM_VOLUMEFLAG_RESET;
667 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
668 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
669 osi_LogSaveString(afsd_logp,volp->cellp->name),
670 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
671 osi_Wakeup((LONG_PTR) &volp->flags);
676 /* Requires read or write lock on cm_volumeLock */
677 void cm_GetVolume(cm_volume_t *volp)
679 InterlockedIncrement(&volp->refCount);
682 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
687 lock_ObtainRead(&cm_volumeLock);
688 hash = CM_VOLUME_ID_HASH(fidp->volume);
689 /* The volumeID can be any one of the three types. So we must
690 * search the hash table for all three types until we find it.
691 * We will search in the order of RO, RW, BK.
693 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
694 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
699 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
700 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
706 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
707 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
712 /* hold the volume if we found it */
716 lock_ReleaseRead(&cm_volumeLock);
720 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
721 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
724 #ifdef SEARCH_ALL_VOLUMES
727 char volNameString[VL_MAXNAMELEN];
731 lock_ObtainRead(&cm_volumeLock);
732 #ifdef SEARCH_ALL_VOLUMES
733 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
734 if (cellp == volp->cellp &&
735 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
736 (unsigned) volumeID == volp->vol[ROVOL].ID ||
737 (unsigned) volumeID == volp->vol[BACKVOL].ID))
742 #endif /* SEARCH_ALL_VOLUMES */
744 hash = CM_VOLUME_ID_HASH(volumeID);
745 /* The volumeID can be any one of the three types. So we must
746 * search the hash table for all three types until we find it.
747 * We will search in the order of RO, RW, BK.
749 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
750 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
755 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
756 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
762 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
763 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
768 #ifdef SEARCH_ALL_VOLUMES
769 osi_assertx(volp == volp2, "unexpected cm_vol_t");
772 /* hold the volume if we found it */
776 lock_ReleaseRead(&cm_volumeLock);
780 lock_ObtainWrite(&volp->rw);
783 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
784 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
786 lock_ReleaseWrite(&volp->rw);
790 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
791 lock_ObtainWrite(&cm_volumeLock);
792 cm_AdjustVolumeLRU(volp);
793 lock_ReleaseWrite(&cm_volumeLock);
796 lock_ObtainRead(&cm_volumeLock);
798 lock_ReleaseRead(&cm_volumeLock);
803 /* otherwise, we didn't find it so consult the VLDB */
804 sprintf(volNameString, "%u", volumeID);
805 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
806 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
808 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
809 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
810 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
813 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
814 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
821 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
822 struct cm_user *userp, struct cm_req *reqp,
823 afs_uint32 flags, cm_volume_t **outVolpp)
826 #ifdef SEARCH_ALL_VOLUMES
830 char name[VL_MAXNAMELEN];
835 strncpy(name, volumeNamep, VL_MAXNAMELEN);
836 name[VL_MAXNAMELEN-1] = '\0';
839 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
841 name[len - 7] = '\0';
842 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
844 name[len - 9] = '\0';
849 lock_ObtainRead(&cm_volumeLock);
850 #ifdef SEARCH_ALL_VOLUMES
851 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
852 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
857 #endif /* SEARCH_ALL_VOLUMES */
859 hash = CM_VOLUME_NAME_HASH(name);
860 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
861 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
865 #ifdef SEARCH_ALL_VOLUMES
866 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
869 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
871 /* otherwise, get from VLDB */
874 * Change to a write lock so that we have exclusive use of
875 * the first cm_volume_t with a refCount of 0 so that we
876 * have time to increment it.
878 lock_ConvertRToW(&cm_volumeLock);
880 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
881 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
882 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
883 if ( volp->refCount == 0 ) {
884 /* There is one we can re-use */
889 for ( volp = cm_data.volumeLRULastp;
891 volp = (cm_volume_t *) osi_QPrev(&volp->q))
893 if ( volp->refCount == 0 ) {
894 /* There is one we can re-use */
900 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
902 InterlockedIncrement(&volp->refCount);
903 lock_ReleaseWrite(&cm_volumeLock);
904 lock_ObtainWrite(&volp->rw);
905 lock_ObtainWrite(&cm_volumeLock);
907 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
908 volp->cellp->name, volp->namep);
910 /* The volp is removed from the LRU queue in order to
911 * prevent two threads from attempting to recycle the
912 * same object. This volp must be re-inserted back into
913 * the LRU queue before this function exits.
915 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
916 cm_RemoveVolumeFromLRU(volp);
917 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
918 cm_RemoveVolumeFromNameHashTable(volp);
920 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
921 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
922 cm_RemoveVolumeFromIDHashTable(volp, volType);
923 if (volp->vol[volType].ID)
924 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
925 volp->vol[volType].ID = 0;
926 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
927 lock_ReleaseWrite(&cm_volumeLock);
928 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
929 lock_ObtainWrite(&cm_volumeLock);
932 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
933 memset(volp, 0, sizeof(cm_volume_t));
934 volp->magic = CM_VOLUME_MAGIC;
935 volp->allNextp = cm_data.allVolumesp;
936 cm_data.allVolumesp = volp;
937 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
938 lock_ReleaseWrite(&cm_volumeLock);
939 lock_ObtainWrite(&volp->rw);
940 lock_ObtainWrite(&cm_volumeLock);
941 volp->refCount = 1; /* starts off held */
944 strncpy(volp->namep, name, VL_MAXNAMELEN);
945 volp->namep[VL_MAXNAMELEN-1] = '\0';
946 volp->flags = CM_VOLUMEFLAG_RESET;
948 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
949 volp->vol[volType].state = vl_unknown;
950 volp->vol[volType].nextp = NULL;
951 volp->vol[volType].flags = 0;
953 volp->cbExpiresRO = 0;
954 volp->cbServerpRO = NULL;
955 volp->creationDateRO = 0;
956 cm_AddVolumeToNameHashTable(volp);
957 lock_ReleaseWrite(&cm_volumeLock);
962 lock_ReleaseRead(&cm_volumeLock);
965 return CM_ERROR_NOSUCHVOLUME;
967 lock_ObtainWrite(&volp->rw);
970 /* if we get here we are holding the mutex */
971 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
972 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
974 lock_ReleaseWrite(&volp->rw);
976 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
977 type == ROVOL && volp->vol[ROVOL].ID == 0))
978 code = CM_ERROR_NOSUCHVOLUME;
983 lock_ObtainWrite(&cm_volumeLock);
984 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
985 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
986 cm_AdjustVolumeLRU(volp);
987 lock_ReleaseWrite(&cm_volumeLock);
990 * do not return it to the caller but do insert it in the LRU
991 * otherwise it will be lost
993 lock_ObtainWrite(&cm_volumeLock);
994 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
995 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
996 cm_AdjustVolumeLRU(volp);
998 lock_ReleaseWrite(&cm_volumeLock);
1001 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1002 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1003 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1006 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1007 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1014 * Only call this function in response to a VNOVOL or VMOVED error
1015 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1016 * as that can lead to recursive calls.
1018 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1022 #ifdef SEARCH_ALL_VOLUMES
1029 return CM_ERROR_INVAL;
1031 cellp = cm_FindCellByID(fidp->cell, 0);
1033 return CM_ERROR_NOSUCHCELL;
1035 /* search for the volume */
1036 lock_ObtainRead(&cm_volumeLock);
1037 #ifdef SEARCH_ALL_VOLUMES
1038 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1039 if (cellp == volp->cellp &&
1040 (fidp->volume == volp->vol[RWVOL].ID ||
1041 fidp->volume == volp->vol[ROVOL].ID ||
1042 fidp->volume == volp->vol[BACKVOL].ID))
1045 #endif /* SEARCH_ALL_VOLUMES */
1047 hash = CM_VOLUME_ID_HASH(fidp->volume);
1048 /* The volumeID can be any one of the three types. So we must
1049 * search the hash table for all three types until we find it.
1050 * We will search in the order of RO, RW, BK.
1052 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1053 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1057 /* try RW volumes */
1058 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1059 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1064 /* try BK volumes */
1065 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1066 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1071 #ifdef SEARCH_ALL_VOLUMES
1072 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1074 /* hold the volume if we found it */
1078 lock_ReleaseRead(&cm_volumeLock);
1081 return CM_ERROR_NOSUCHVOLUME;
1084 cm_data.mountRootGen = time(NULL);
1085 lock_ObtainWrite(&volp->rw);
1086 volp->flags |= CM_VOLUMEFLAG_RESET;
1088 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1089 lock_ReleaseWrite(&volp->rw);
1091 lock_ObtainRead(&cm_volumeLock);
1093 lock_ReleaseRead(&cm_volumeLock);
1098 /* find the appropriate servers from a volume */
1099 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1101 cm_serverRef_t **serverspp;
1102 cm_serverRef_t *current;
1106 lock_ObtainWrite(&cm_serverLock);
1108 if (volume == volp->vol[RWVOL].ID)
1109 serverspp = &volp->vol[RWVOL].serversp;
1110 else if (volume == volp->vol[ROVOL].ID)
1111 serverspp = &volp->vol[ROVOL].serversp;
1112 else if (volume == volp->vol[BACKVOL].ID)
1113 serverspp = &volp->vol[BACKVOL].serversp;
1115 lock_ReleaseWrite(&cm_serverLock);
1119 lock_ObtainWrite(&volp->rw);
1120 volp->flags |= CM_VOLUMEFLAG_RESET;
1121 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1122 lock_ReleaseWrite(&volp->rw);
1130 * Increment the refCount on deleted items as well.
1131 * They will be freed by cm_FreeServerList when they get to zero
1133 for (current = *serverspp; current; current = current->next)
1134 current->refCount++;
1136 lock_ReleaseWrite(&cm_serverLock);
1141 void cm_PutVolume(cm_volume_t *volp)
1143 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1144 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1147 /* return the read-only volume, if there is one, or the read-write volume if
1150 long cm_GetROVolumeID(cm_volume_t *volp)
1154 lock_ObtainRead(&volp->rw);
1155 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1156 id = volp->vol[ROVOL].ID;
1158 id = volp->vol[RWVOL].ID;
1159 lock_ReleaseRead(&volp->rw);
1164 void cm_RefreshVolumes(int lifetime)
1172 /* force mount point target updates */
1173 if (cm_data.mountRootGen + lifetime <= now)
1174 cm_data.mountRootGen = now;
1177 * force a re-loading of volume data from the vldb
1178 * if the lifetime for the cached data has expired
1180 lock_ObtainRead(&cm_volumeLock);
1181 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1182 InterlockedIncrement(&volp->refCount);
1183 lock_ReleaseRead(&cm_volumeLock);
1185 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1186 lock_ObtainWrite(&volp->rw);
1187 if (volp->lastUpdateTime + lifetime <= now)
1188 volp->flags |= CM_VOLUMEFLAG_RESET;
1189 lock_ReleaseWrite(&volp->rw);
1192 lock_ObtainRead(&cm_volumeLock);
1193 refCount = InterlockedDecrement(&volp->refCount);
1194 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1196 lock_ReleaseRead(&cm_volumeLock);
1200 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1201 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1205 AFSFetchVolumeStatus volStat;
1210 struct rx_connection * rxconnp;
1212 char offLineMsg[256];
1214 long alldown, alldeleted;
1215 cm_serverRef_t *serversp;
1219 OfflineMsg = offLineMsg;
1222 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1223 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1224 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1226 if (!statep->serversp && !(*volumeUpdatedp)) {
1228 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1229 *volumeUpdatedp = 1;
1232 if (statep->serversp) {
1235 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1236 if (serversp->status == srv_deleted)
1243 if (serversp->status == srv_busy || serversp->status == srv_offline)
1244 serversp->status = srv_not_busy;
1247 if (alldeleted && !(*volumeUpdatedp)) {
1249 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1250 *volumeUpdatedp = 1;
1253 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1254 (!alldown && statep->state == vl_alldown)) {
1256 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1258 lock_ReleaseWrite(&volp->rw);
1260 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1264 rxconnp = cm_GetRxConn(connp);
1265 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1266 &volStat, &Name, &OfflineMsg, &MOTD);
1267 rx_PutConnection(rxconnp);
1268 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, NULL, NULL, NULL, code));
1269 code = cm_MapRPCError(code, &req);
1271 lock_ObtainWrite(&volp->rw);
1272 if (code == 0 && volStat.Online) {
1273 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1274 statep->state = vl_online;
1276 } else if (code == CM_ERROR_NOACCESS) {
1277 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1278 statep->state = vl_unknown;
1281 } else if (alldown && statep->state != vl_alldown) {
1282 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1283 statep->state = vl_alldown;
1285 } else if (statep->state != vl_alldown) {
1286 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1287 statep->state = vl_alldown;
1292 /* The return code is 0 if the volume is not online and
1293 * 1 if the volume is online
1296 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1300 afs_uint32 online = 0;
1301 afs_uint32 volumeUpdated = 0;
1303 lock_ObtainWrite(&volp->rw);
1305 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1307 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1311 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1312 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1313 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1315 lock_ReleaseWrite(&volp->rw);
1321 * called from the Daemon thread.
1322 * when checking the offline status, check those of the most recently used volumes first.
1324 void cm_CheckOfflineVolumes(void)
1328 extern int daemon_ShutdownFlag;
1329 extern int powerStateSuspended;
1331 lock_ObtainRead(&cm_volumeLock);
1332 for (volp = cm_data.volumeLRULastp;
1333 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1334 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1336 * Skip volume entries that did not exist last time
1337 * the vldb was queried. For those entries wait until
1338 * the next actual request is received for the volume
1339 * before checking its state.
1341 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1342 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1343 InterlockedIncrement(&volp->refCount);
1344 lock_ReleaseRead(&cm_volumeLock);
1345 cm_CheckOfflineVolume(volp, 0);
1346 lock_ObtainRead(&cm_volumeLock);
1347 refCount = InterlockedDecrement(&volp->refCount);
1348 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1351 lock_ReleaseRead(&cm_volumeLock);
1356 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1358 enum volstatus newStatus;
1359 cm_serverRef_t *tsrp;
1361 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1364 if (!volp || !statep) {
1371 lock_ObtainWrite(&cm_serverLock);
1372 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1374 sprintf(addr, "%d.%d.%d.%d",
1375 ((tsp->addr.sin_addr.s_addr & 0xff)),
1376 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1377 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1378 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1380 if (tsrp->status == srv_deleted) {
1381 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1382 statep->ID, osi_LogSaveString(afsd_logp,addr));
1386 cm_GetServerNoLock(tsp);
1387 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1389 if (tsrp->status == srv_busy) {
1390 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1391 statep->ID, osi_LogSaveString(afsd_logp,addr));
1394 } else if (tsrp->status == srv_offline) {
1395 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1396 statep->ID, osi_LogSaveString(afsd_logp,addr));
1400 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1401 statep->ID, osi_LogSaveString(afsd_logp,addr));
1406 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1407 statep->ID, osi_LogSaveString(afsd_logp,addr));
1409 cm_PutServerNoLock(tsp);
1412 lock_ReleaseWrite(&cm_serverLock);
1414 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1415 allDown, allBusy, someBusy, someOffline, allOffline);
1418 newStatus = vl_alldown;
1419 else if (allBusy || (someBusy && someOffline))
1420 newStatus = vl_busy;
1421 else if (allOffline)
1422 newStatus = vl_offline;
1424 newStatus = vl_online;
1426 if (statep->ID && statep->state != newStatus)
1427 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1429 statep->state = newStatus;
1433 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1436 if (volp->vol[RWVOL].ID == volID) {
1437 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1438 } else if (volp->vol[ROVOL].ID == volID) {
1439 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1440 } else if (volp->vol[BACKVOL].ID == volID) {
1441 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1444 * If we are called with volID == 0 then something has gone wrong.
1445 * Most likely a race occurred in the server volume list maintenance.
1446 * Since we don't know which volume's status should be updated,
1447 * just update all of them that are known to exist. Better to be
1448 * correct than fast.
1451 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1452 if (volp->vol[volType].ID != 0)
1453 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1459 ** Finds all volumes that reside on this server and reorders their
1460 ** RO list according to the changed rank of server.
1462 void cm_ChangeRankVolume(cm_server_t *tsp)
1468 /* find volumes which might have RO copy on server*/
1469 lock_ObtainRead(&cm_volumeLock);
1470 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1472 code = 1 ; /* assume that list is unchanged */
1473 InterlockedIncrement(&volp->refCount);
1474 lock_ReleaseRead(&cm_volumeLock);
1475 lock_ObtainWrite(&volp->rw);
1477 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1478 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1480 /* this volume list was changed */
1482 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1484 lock_ReleaseWrite(&volp->rw);
1485 lock_ObtainRead(&cm_volumeLock);
1486 refCount = InterlockedDecrement(&volp->refCount);
1487 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1489 lock_ReleaseRead(&cm_volumeLock);
1492 /* dump all volumes that have reference count > 0 to a file.
1493 * cookie is used to identify this batch for easy parsing,
1494 * and it a string provided by a caller
1496 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1503 lock_ObtainRead(&cm_scacheLock);
1504 lock_ObtainRead(&cm_volumeLock);
1507 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1508 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1509 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1511 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1514 char *srvStr = NULL;
1515 afs_uint32 srvStrRpc = TRUE;
1519 if (volp->cbServerpRO) {
1520 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1521 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1522 srvStr = malloc(16);
1524 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1528 if (volp->cbExpiresRO) {
1529 t = volp->cbExpiresRO;
1533 cbt[strlen(cbt)-1] = '\0';
1536 if (volp->creationDateRO) {
1537 t = volp->creationDateRO;
1540 cdrot = strdup(cdrot);
1541 cdrot[strlen(cdrot)-1] = '\0';
1546 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1547 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1548 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1549 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1550 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1552 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1556 RpcStringFree(&srvStr);
1565 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1566 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1569 lock_ReleaseRead(&cm_volumeLock);
1570 lock_ReleaseRead(&cm_scacheLock);
1577 * String hash function used by SDBM project.
1578 * It was chosen because it is fast and provides
1581 afs_uint32 SDBMHash(const char * str)
1583 afs_uint32 hash = 0;
1589 for(i = 0, len = strlen(str); i < len; i++)
1591 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1594 return (hash & 0x7FFFFFFF);
1597 /* call with volume write-locked and mutex held */
1598 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1602 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1605 i = CM_VOLUME_NAME_HASH(volp->namep);
1607 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1608 cm_data.volumeNameHashTablep[i] = volp;
1609 volp->qflags |= CM_VOLUME_QFLAG_IN_HASH;
1612 /* call with volume write-locked and mutex held */
1613 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1615 cm_volume_t **lvolpp;
1619 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1620 /* hash it out first */
1621 i = CM_VOLUME_NAME_HASH(volp->namep);
1622 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1624 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1625 if (tvolp == volp) {
1626 *lvolpp = volp->nameNextp;
1627 volp->qflags &= ~CM_VOLUME_QFLAG_IN_HASH;
1628 volp->nameNextp = NULL;
1635 /* call with volume write-locked and mutex held */
1636 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1639 struct cm_vol_state * statep;
1641 statep = cm_VolumeStateByType(volp, volType);
1643 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1646 i = CM_VOLUME_ID_HASH(statep->ID);
1650 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1651 cm_data.volumeRWIDHashTablep[i] = volp;
1654 statep->nextp = cm_data.volumeROIDHashTablep[i];
1655 cm_data.volumeROIDHashTablep[i] = volp;
1658 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1659 cm_data.volumeBKIDHashTablep[i] = volp;
1662 statep->qflags |= CM_VOLUME_QFLAG_IN_HASH;
1666 /* call with volume write-locked and mutex held */
1667 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1669 cm_volume_t **lvolpp;
1671 struct cm_vol_state * statep;
1674 statep = cm_VolumeStateByType(volp, volType);
1676 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1677 /* hash it out first */
1678 i = CM_VOLUME_ID_HASH(statep->ID);
1682 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1683 tvolp = cm_data.volumeRWIDHashTablep[i];
1686 lvolpp = &cm_data.volumeROIDHashTablep[i];
1687 tvolp = cm_data.volumeROIDHashTablep[i];
1690 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1691 tvolp = cm_data.volumeBKIDHashTablep[i];
1694 osi_assertx(0, "invalid volume type");
1697 if (tvolp == volp) {
1698 *lvolpp = statep->nextp;
1699 statep->qflags &= ~CM_VOLUME_QFLAG_IN_HASH;
1700 statep->nextp = NULL;
1704 lvolpp = &tvolp->vol[volType].nextp;
1705 tvolp = tvolp->vol[volType].nextp;
1710 /* must be called with cm_volumeLock write-locked! */
1711 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1713 lock_AssertWrite(&cm_volumeLock);
1715 if (volp == cm_data.volumeLRUFirstp)
1718 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1719 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1720 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1721 volp->qflags |= CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1723 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1726 /* must be called with cm_volumeLock write-locked! */
1727 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1729 lock_AssertWrite(&cm_volumeLock);
1731 if (volp == cm_data.volumeLRULastp)
1734 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1735 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1736 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1737 volp->qflags |= CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1739 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1742 /* must be called with cm_volumeLock write-locked! */
1743 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1745 lock_AssertWrite(&cm_volumeLock);
1747 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1748 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1749 volp->qflags &= ~CM_VOLUME_QFLAG_IN_LRU_QUEUE;
1752 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1755 static char * volstatus_str(enum volstatus vs)
1771 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1773 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1776 if (volID == volp->vol[RWVOL].ID)
1778 else if (volID == volp->vol[ROVOL].ID)
1780 else if (volID == volp->vol[BACKVOL].ID)
1784 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1786 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1787 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1789 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1792 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1794 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1796 return statep->state;
1801 /* Renew .readonly volume callbacks that are more than
1802 * 30 minutes old. (A volume callback is issued for 2 hours.)
1805 cm_VolumeRenewROCallbacks(void)
1808 time_t minexp = time(NULL) + 90 * 60;
1809 extern int daemon_ShutdownFlag;
1810 extern int powerStateSuspended;
1812 lock_ObtainRead(&cm_volumeLock);
1813 for (volp = cm_data.allVolumesp;
1814 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1815 volp=volp->allNextp) {
1816 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1821 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1825 lock_ReleaseRead(&cm_volumeLock);
1826 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1827 lock_ObtainWrite(&scp->rw);
1828 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1829 lock_ReleaseWrite(&scp->rw);
1830 cm_ReleaseSCache(scp);
1832 lock_ObtainRead(&cm_volumeLock);
1835 lock_ReleaseRead(&cm_volumeLock);
1839 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1841 return &volp->vol[volType];
1845 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1847 cm_vol_state_t * statep = NULL;
1849 if (id == volp->vol[RWVOL].ID)
1850 statep = &volp->vol[RWVOL];
1851 else if (id == volp->vol[ROVOL].ID)
1852 statep = &volp->vol[ROVOL];
1853 else if (id == volp->vol[BACKVOL].ID)
1854 statep = &volp->vol[BACKVOL];
1860 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1862 size_t len = strlen(volname);
1863 cm_vol_state_t *statep;
1865 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1866 statep = &volp->vol[ROVOL];
1867 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1868 statep = &volp->vol[BACKVOL];
1870 statep = &volp->vol[RWVOL];
1876 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1878 if (id == volp->vol[RWVOL].ID)
1880 else if (id == volp->vol[ROVOL].ID)
1882 else if (id == volp->vol[BACKVOL].ID)