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>
26 osi_rwlock_t cm_volumeLock;
29 cm_ValidateVolume(void)
34 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
35 if ( volp->magic != CM_VOLUME_MAGIC ) {
36 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
37 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
40 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
41 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
42 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
45 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
46 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
47 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
50 if ( count != 0 && volp == cm_data.allVolumesp ||
51 count > cm_data.maxVolumes ) {
52 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
53 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
58 if ( count != cm_data.currentVolumes ) {
59 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
60 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
68 cm_ShutdownVolume(void)
72 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
74 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
75 if (volp->vol[volType].ID)
76 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
78 volp->cbExpiresRO = 0;
79 volp->cbServerpRO = NULL;
80 lock_FinalizeRWLock(&volp->rw);
86 void cm_InitVolume(int newFile, long maxVols)
88 static osi_once_t once;
90 if (osi_Once(&once)) {
91 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
94 cm_data.allVolumesp = NULL;
95 cm_data.currentVolumes = 0;
96 cm_data.maxVolumes = maxVols;
97 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
101 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
105 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
108 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
109 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
110 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
111 volp->lastUpdateTime = 0;
112 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
113 volp->vol[volType].state = vl_unknown;
114 volp->vol[volType].serversp = NULL;
115 if (volp->vol[volType].ID)
116 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
118 volp->cbExpiresRO = 0;
119 volp->cbServerpRO = NULL;
127 /* returns true if the id is a decimal integer, in which case we interpret it
128 * as an id. make the cache manager much simpler.
129 * Stolen from src/volser/vlprocs.c */
131 cm_VolNameIsID(char *aname)
134 while (tc = *aname++) {
135 if (tc > '9' || tc < '0')
143 * Update a volume. Caller holds a write lock on the volume (volp->rw).
146 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
147 * Yes, we support multihomed fileservers.
148 * Since before we got the code from IBM.
149 * But to find out about multiple addresses on a multihomed server, you need
150 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
151 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
152 * address per server.
153 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
154 * see src/afs/afs_volume.c, paying particular attention to
155 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
156 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
157 * thanks. The windows client calls the 0 versions.
158 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
160 * By not using the N versions, you only get up to 8 sites instead of 13.
161 * By not using the U versions, you don't get to know about multihomed serve
162 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
163 * Of course, you probably want to support the older versions for backward
164 * compatibility. If you do that, you need to call the newest interface
165 * first, and fall back to successively older versions if you get
169 cm_GetEntryByName( struct cm_cell *cellp, const char *name,
170 struct vldbentry *vldbEntryp,
171 struct nvldbentry *nvldbEntryp,
172 struct uvldbentry *uvldbEntryp,
180 struct rx_connection * rxconnp;
182 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
183 osi_LogSaveString(afsd_logp,cellp->name),
184 osi_LogSaveString(afsd_logp,name));
187 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
191 rxconnp = cm_GetRxConn(connp);
192 code = VL_GetEntryByNameU(rxconnp, name, uvldbEntryp);
194 if ( code == RXGEN_OPCODE )
196 code = VL_GetEntryByNameN(rxconnp, name, nvldbEntryp);
199 if ( code == RXGEN_OPCODE ) {
200 code = VL_GetEntryByNameO(rxconnp, name, vldbEntryp);
203 rx_PutConnection(rxconnp);
204 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
205 code = cm_MapVLRPCError(code, reqp);
207 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
208 osi_LogSaveString(afsd_logp,cellp->name),
209 osi_LogSaveString(afsd_logp,name), code);
211 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
212 osi_LogSaveString(afsd_logp,cellp->name),
213 osi_LogSaveString(afsd_logp,name));
218 cm_GetEntryByID( struct cm_cell *cellp, afs_uint32 id,
219 struct vldbentry *vldbEntryp,
220 struct nvldbentry *nvldbEntryp,
221 struct uvldbentry *uvldbEntryp,
229 StringCbPrintf(name, sizeof(name), "%u", id);
231 return cm_GetEntryByName(cellp, name, vldbEntryp, nvldbEntryp, uvldbEntryp, methodp, userp, reqp);
234 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
237 struct rx_connection *rxconnp;
241 cm_serverRef_t *tsrp;
243 struct sockaddr_in tsockAddr;
246 struct vldbentry vldbEntry;
247 struct nvldbentry nvldbEntry;
248 struct uvldbentry uvldbEntry;
252 enum volstatus rwNewstate = vl_online;
253 enum volstatus roNewstate = vl_online;
254 enum volstatus bkNewstate = vl_online;
255 #ifdef AFS_FREELANCE_CLIENT
261 lock_AssertWrite(&volp->rw);
264 * If the last volume update was in the last five
265 * minutes and it did not exist, then avoid the RPC
266 * and return No Such Volume immediately.
269 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
270 (now < volp->lastUpdateTime + 600))
272 return CM_ERROR_NOSUCHVOLUME;
275 #ifdef AFS_FREELANCE_CLIENT
276 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
279 memset(&vldbEntry, 0, sizeof(vldbEntry));
280 vldbEntry.flags |= VLF_RWEXISTS;
281 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
287 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
288 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
289 volp->cellp->name, volp->namep, volp->flags);
290 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
291 lock_ObtainWrite(&volp->rw);
292 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
293 volp->cellp->name, volp->namep, volp->flags);
294 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
295 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
296 volp->cellp->name, volp->namep, volp->flags);
297 osi_Wakeup((LONG_PTR) &volp->flags);
303 /* Do not query again if the last update attempt failed in the last 60 seconds */
304 if ((volp->flags & CM_VOLUMEFLAG_RESET) && (volp->lastUpdateTime > now - 60))
306 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation unsuccessful update in last 60 seconds -- name %s:%s flags 0x%x",
307 volp->cellp->name, volp->namep, volp->flags);
308 return(CM_ERROR_ALLDOWN);
311 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
312 lock_ReleaseWrite(&volp->rw);
314 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
315 cm_UpdateCell(cellp, 0);
317 /* now we have volume structure locked and held; make RPC to fill it */
318 code = cm_GetEntryByName(cellp, volp->namep, &vldbEntry, &nvldbEntry,
320 &method, userp, reqp);
323 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
324 * does not exist and is not a numeric string but there might exist a .readonly volume.
325 * If the base name doesn't exist we will not care about the .backup that might be left
326 * behind since there should be no method to access it.
328 if (code == CM_ERROR_NOSUCHVOLUME &&
329 _atoi64(volp->namep) == 0 &&
330 volp->vol[RWVOL].ID == 0 &&
331 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
332 char name[VL_MAXNAMELEN];
334 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
336 /* now we have volume structure locked and held; make RPC to fill it */
337 code = cm_GetEntryByName(cellp, name, &vldbEntry, &nvldbEntry,
339 &method, userp, reqp);
343 * What if there was a volume rename? The volume name no longer exists but the
344 * volume id might. Try to refresh the volume location information based one
345 * of the readwrite or readonly volume id.
347 if (code == CM_ERROR_NOSUCHVOLUME) {
348 if (volp->vol[RWVOL].ID != 0) {
349 code = cm_GetEntryByID(cellp, volp->vol[RWVOL].ID, &vldbEntry, &nvldbEntry,
351 &method, userp, reqp);
352 } else if (volp->vol[ROVOL].ID != 0) {
353 code = cm_GetEntryByID(cellp, volp->vol[ROVOL].ID, &vldbEntry, &nvldbEntry,
355 &method, userp, reqp);
359 lock_ObtainWrite(&volp->rw);
366 afs_int32 serverNumber[NMAXNSERVERS];
367 afs_int32 serverFlags[NMAXNSERVERS];
368 afsUUID serverUUID[NMAXNSERVERS];
369 afs_int32 rwServers_alldown = 1;
370 afs_int32 roServers_alldown = 1;
371 afs_int32 bkServers_alldown = 1;
372 char name[VL_MAXNAMELEN];
374 #ifdef AFS_FREELANCE_CLIENT
376 rwServers_alldown = 0;
379 /* clear out old bindings */
380 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
381 if (volp->vol[volType].serversp)
382 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
385 memset(serverUUID, 0, sizeof(serverUUID));
389 flags = vldbEntry.flags;
390 nServers = vldbEntry.nServers;
391 rwID = vldbEntry.volumeId[0];
392 roID = vldbEntry.volumeId[1];
393 bkID = vldbEntry.volumeId[2];
394 for ( i=0; i<nServers; i++ ) {
395 serverFlags[i] = vldbEntry.serverFlags[i];
396 serverNumber[i] = vldbEntry.serverNumber[i];
398 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
399 name[VL_MAXNAMELEN - 1] = '\0';
402 flags = nvldbEntry.flags;
403 nServers = nvldbEntry.nServers;
404 rwID = nvldbEntry.volumeId[0];
405 roID = nvldbEntry.volumeId[1];
406 bkID = nvldbEntry.volumeId[2];
407 for ( i=0; i<nServers; i++ ) {
408 serverFlags[i] = nvldbEntry.serverFlags[i];
409 serverNumber[i] = nvldbEntry.serverNumber[i];
411 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
412 name[VL_MAXNAMELEN - 1] = '\0';
415 flags = uvldbEntry.flags;
416 nServers = uvldbEntry.nServers;
417 rwID = uvldbEntry.volumeId[0];
418 roID = uvldbEntry.volumeId[1];
419 bkID = uvldbEntry.volumeId[2];
420 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
421 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
422 serverFlags[j] = uvldbEntry.serverFlags[i];
423 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
426 afs_uint32 * addrp, nentries, code, unique;
428 ListAddrByAttributes attrs;
431 memset(&attrs, 0, sizeof(attrs));
432 attrs.Mask = VLADDR_UUID;
433 attrs.uuid = uvldbEntry.serverNumber[i];
434 memset(&uuid, 0, sizeof(uuid));
435 memset(&addrs, 0, sizeof(addrs));
438 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
442 rxconnp = cm_GetRxConn(connp);
443 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
444 rx_PutConnection(rxconnp);
445 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
448 code = cm_MapVLRPCError(code, reqp);
449 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
453 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
455 addrp = addrs.bulkaddrs_val;
456 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
457 serverFlags[j] = uvldbEntry.serverFlags[i];
458 serverNumber[j] = addrp[k];
459 serverUUID[j] = uuid;
462 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
465 code = CM_ERROR_INVAL;
468 nServers = j; /* update the server count */
469 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
470 name[VL_MAXNAMELEN - 1] = '\0';
474 /* decode the response */
475 lock_ObtainWrite(&cm_volumeLock);
476 if (!cm_VolNameIsID(volp->namep)) {
481 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
482 name[len - 7] = '\0';
483 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
484 name[len - 9] = '\0';
487 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
488 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
490 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
491 cm_RemoveVolumeFromNameHashTable(volp);
493 strcpy(volp->namep, name);
495 cm_AddVolumeToNameHashTable(volp);
498 if (flags & VLF_DFSFILESET) {
499 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
500 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
501 osi_LogSaveString(afsd_logp, volp->namep));
504 if (flags & VLF_RWEXISTS) {
505 if (volp->vol[RWVOL].ID != rwID) {
506 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
507 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
508 volp->vol[RWVOL].ID = rwID;
509 cm_AddVolumeToIDHashTable(volp, RWVOL);
512 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
513 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
514 volp->vol[RWVOL].ID = 0;
516 if (flags & VLF_ROEXISTS) {
517 if (volp->vol[ROVOL].ID != roID) {
518 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
519 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
520 volp->vol[ROVOL].ID = roID;
521 cm_AddVolumeToIDHashTable(volp, ROVOL);
524 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
525 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
526 volp->vol[ROVOL].ID = 0;
528 if (flags & VLF_BACKEXISTS) {
529 if (volp->vol[BACKVOL].ID != bkID) {
530 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
531 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
532 volp->vol[BACKVOL].ID = bkID;
533 cm_AddVolumeToIDHashTable(volp, BACKVOL);
536 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
537 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
538 volp->vol[BACKVOL].ID = 0;
540 lock_ReleaseWrite(&cm_volumeLock);
541 for (i=0; i<nServers; i++) {
542 /* create a server entry */
543 tflags = serverFlags[i];
544 if (tflags & VLSF_DONTUSE)
546 tsockAddr.sin_port = htons(7000);
547 tsockAddr.sin_family = AF_INET;
548 tempAddr = htonl(serverNumber[i]);
549 tsockAddr.sin_addr.s_addr = tempAddr;
550 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
551 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
553 * Check to see if the uuid of the server we know at this address
554 * matches the uuid of the server we are being told about by the
555 * vlserver. If not, ...?
557 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
558 char uuid1[128], uuid2[128];
561 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
562 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
563 afs_inet_ntoa_r(serverNumber[i], hoststr);
565 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
566 osi_LogSaveString(afsd_logp, uuid1),
567 osi_LogSaveString(afsd_logp, uuid2),
568 osi_LogSaveString(afsd_logp, hoststr));
573 * cm_NewServer will probe the file server which in turn will
574 * update the state on the volume group object. Do not probe
575 * in this thread. It will block the thread and can result in
576 * a recursive call to cm_UpdateVolumeLocation().
578 lock_ReleaseWrite(&volp->rw);
579 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
580 lock_ObtainWrite(&volp->rw);
582 osi_assertx(tsp != NULL, "null cm_server_t");
585 * if this server was created by fs setserverprefs
586 * then it won't have either a cell assignment or
591 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
592 !afs_uuid_is_nil(&serverUUID[i])) {
593 tsp->uuid = serverUUID[i];
594 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
597 /* and add it to the list(s). */
599 * Each call to cm_NewServerRef() increments the
600 * ref count of tsp. These reference will be dropped,
601 * if and when the volume is reset; see reset code
602 * earlier in this function.
604 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
605 tsrp = cm_NewServerRef(tsp, rwID);
606 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
607 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
608 rwServers_alldown = 0;
610 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
611 tsrp = cm_NewServerRef(tsp, roID);
612 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
615 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
616 roServers_alldown = 0;
618 /* We don't use VLSF_BACKVOL !?! */
619 /* Because only the backup on the server holding the RW
620 * volume can be valid. This check prevents errors if a
621 * RW is moved but the old backup is not removed.
623 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
624 tsrp = cm_NewServerRef(tsp, bkID);
625 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
627 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
628 bkServers_alldown = 0;
630 /* Drop the reference obtained by cm_FindServer() */
637 * If the first n servers have the same ipRank, then we
638 * randomly pick one among them and move it to the beginning.
639 * We don't bother to re-order the whole list because
640 * the rest of the list is used only if the first server is
641 * down. We only do this for the RO list; we assume the other
642 * lists are length 1.
645 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
648 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
649 roNewstate = roServers_alldown ? vl_alldown : vl_online;
650 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
652 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
653 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
654 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
656 rwNewstate = roNewstate = bkNewstate = vl_alldown;
659 if (volp->vol[RWVOL].state != rwNewstate) {
660 if (volp->vol[RWVOL].ID)
661 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
662 volp->vol[RWVOL].state = rwNewstate;
664 if (volp->vol[ROVOL].state != roNewstate) {
665 if (volp->vol[ROVOL].ID)
666 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
667 volp->vol[ROVOL].state = roNewstate;
669 if (volp->vol[BACKVOL].state != bkNewstate) {
670 if (volp->vol[BACKVOL].ID)
671 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
672 volp->vol[BACKVOL].state = bkNewstate;
675 volp->lastUpdateTime = time(NULL);
678 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
680 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
681 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
682 osi_LogSaveString(afsd_logp,volp->cellp->name),
683 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
684 osi_Wakeup((LONG_PTR) &volp->flags);
689 /* Requires read or write lock on cm_volumeLock */
690 void cm_GetVolume(cm_volume_t *volp)
692 InterlockedIncrement(&volp->refCount);
695 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
700 lock_ObtainRead(&cm_volumeLock);
701 hash = CM_VOLUME_ID_HASH(fidp->volume);
702 /* The volumeID can be any one of the three types. So we must
703 * search the hash table for all three types until we find it.
704 * We will search in the order of RO, RW, BK.
706 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
707 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
712 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
713 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
719 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
720 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
725 /* hold the volume if we found it */
729 lock_ReleaseRead(&cm_volumeLock);
733 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
734 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
737 #ifdef SEARCH_ALL_VOLUMES
740 char volNameString[VL_MAXNAMELEN];
744 lock_ObtainRead(&cm_volumeLock);
745 #ifdef SEARCH_ALL_VOLUMES
746 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
747 if (cellp == volp->cellp &&
748 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
749 (unsigned) volumeID == volp->vol[ROVOL].ID ||
750 (unsigned) volumeID == volp->vol[BACKVOL].ID))
755 #endif /* SEARCH_ALL_VOLUMES */
757 hash = CM_VOLUME_ID_HASH(volumeID);
758 /* The volumeID can be any one of the three types. So we must
759 * search the hash table for all three types until we find it.
760 * We will search in the order of RO, RW, BK.
762 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
763 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
768 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
769 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
775 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
776 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
781 #ifdef SEARCH_ALL_VOLUMES
782 osi_assertx(volp == volp2, "unexpected cm_vol_t");
785 /* hold the volume if we found it */
789 lock_ReleaseRead(&cm_volumeLock);
793 lock_ObtainWrite(&volp->rw);
796 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
797 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
799 lock_ReleaseWrite(&volp->rw);
803 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
804 lock_ObtainWrite(&cm_volumeLock);
805 cm_AdjustVolumeLRU(volp);
806 lock_ReleaseWrite(&cm_volumeLock);
809 lock_ObtainRead(&cm_volumeLock);
811 lock_ReleaseRead(&cm_volumeLock);
816 /* otherwise, we didn't find it so consult the VLDB */
817 sprintf(volNameString, "%u", volumeID);
818 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
819 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
821 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
822 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
823 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
826 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
827 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
834 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
835 struct cm_user *userp, struct cm_req *reqp,
836 afs_uint32 flags, cm_volume_t **outVolpp)
839 #ifdef SEARCH_ALL_VOLUMES
843 char name[VL_MAXNAMELEN];
848 strncpy(name, volumeNamep, VL_MAXNAMELEN);
849 name[VL_MAXNAMELEN-1] = '\0';
852 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
854 name[len - 7] = '\0';
855 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
857 name[len - 9] = '\0';
862 lock_ObtainRead(&cm_volumeLock);
863 #ifdef SEARCH_ALL_VOLUMES
864 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
865 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
870 #endif /* SEARCH_ALL_VOLUMES */
872 hash = CM_VOLUME_NAME_HASH(name);
873 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
874 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
878 #ifdef SEARCH_ALL_VOLUMES
879 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
882 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
884 /* otherwise, get from VLDB */
887 * Change to a write lock so that we have exclusive use of
888 * the first cm_volume_t with a refCount of 0 so that we
889 * have time to increment it.
891 lock_ConvertRToW(&cm_volumeLock);
893 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
894 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
895 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
896 if ( volp->refCount == 0 ) {
897 /* There is one we can re-use */
902 for ( volp = cm_data.volumeLRULastp;
904 volp = (cm_volume_t *) osi_QPrev(&volp->q))
906 if ( volp->refCount == 0 ) {
907 /* There is one we can re-use */
913 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
915 InterlockedIncrement(&volp->refCount);
916 lock_ReleaseWrite(&cm_volumeLock);
917 lock_ObtainWrite(&volp->rw);
918 lock_ObtainWrite(&cm_volumeLock);
920 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
921 volp->cellp->name, volp->namep);
923 /* The volp is removed from the LRU queue in order to
924 * prevent two threads from attempting to recycle the
925 * same object. This volp must be re-inserted back into
926 * the LRU queue before this function exits.
928 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
929 cm_RemoveVolumeFromLRU(volp);
930 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
931 cm_RemoveVolumeFromNameHashTable(volp);
933 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
934 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
935 cm_RemoveVolumeFromIDHashTable(volp, volType);
936 if (volp->vol[volType].ID)
937 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
938 volp->vol[volType].ID = 0;
939 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
940 lock_ReleaseWrite(&cm_volumeLock);
941 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
942 lock_ObtainWrite(&cm_volumeLock);
945 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
946 memset(volp, 0, sizeof(cm_volume_t));
947 volp->magic = CM_VOLUME_MAGIC;
948 volp->allNextp = cm_data.allVolumesp;
949 cm_data.allVolumesp = volp;
950 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
951 lock_ReleaseWrite(&cm_volumeLock);
952 lock_ObtainWrite(&volp->rw);
953 lock_ObtainWrite(&cm_volumeLock);
954 volp->refCount = 1; /* starts off held */
957 strncpy(volp->namep, name, VL_MAXNAMELEN);
958 volp->namep[VL_MAXNAMELEN-1] = '\0';
959 volp->flags = CM_VOLUMEFLAG_RESET;
960 volp->lastUpdateTime = 0;
962 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
963 volp->vol[volType].state = vl_unknown;
964 volp->vol[volType].nextp = NULL;
965 volp->vol[volType].flags = 0;
967 volp->cbExpiresRO = 0;
968 volp->cbServerpRO = NULL;
969 volp->creationDateRO = 0;
970 cm_AddVolumeToNameHashTable(volp);
971 lock_ReleaseWrite(&cm_volumeLock);
976 lock_ReleaseRead(&cm_volumeLock);
979 return CM_ERROR_NOSUCHVOLUME;
981 lock_ObtainWrite(&volp->rw);
984 /* if we get here we are holding the mutex */
985 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
986 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
988 lock_ReleaseWrite(&volp->rw);
990 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
991 type == ROVOL && volp->vol[ROVOL].ID == 0))
992 code = CM_ERROR_NOSUCHVOLUME;
997 lock_ObtainWrite(&cm_volumeLock);
998 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
999 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1000 cm_AdjustVolumeLRU(volp);
1001 lock_ReleaseWrite(&cm_volumeLock);
1004 * do not return it to the caller but do insert it in the LRU
1005 * otherwise it will be lost
1007 lock_ObtainWrite(&cm_volumeLock);
1008 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1009 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1010 cm_AdjustVolumeLRU(volp);
1012 lock_ReleaseWrite(&cm_volumeLock);
1015 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1016 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1017 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1020 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1021 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1028 * Only call this function in response to a VNOVOL or VMOVED error
1029 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1030 * as that can lead to recursive calls.
1032 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1036 #ifdef SEARCH_ALL_VOLUMES
1043 return CM_ERROR_INVAL;
1045 cellp = cm_FindCellByID(fidp->cell, 0);
1047 return CM_ERROR_NOSUCHCELL;
1049 /* search for the volume */
1050 lock_ObtainRead(&cm_volumeLock);
1051 #ifdef SEARCH_ALL_VOLUMES
1052 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1053 if (cellp == volp->cellp &&
1054 (fidp->volume == volp->vol[RWVOL].ID ||
1055 fidp->volume == volp->vol[ROVOL].ID ||
1056 fidp->volume == volp->vol[BACKVOL].ID))
1059 #endif /* SEARCH_ALL_VOLUMES */
1061 hash = CM_VOLUME_ID_HASH(fidp->volume);
1062 /* The volumeID can be any one of the three types. So we must
1063 * search the hash table for all three types until we find it.
1064 * We will search in the order of RO, RW, BK.
1066 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1067 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1071 /* try RW volumes */
1072 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1073 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1078 /* try BK volumes */
1079 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1080 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1085 #ifdef SEARCH_ALL_VOLUMES
1086 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1088 /* hold the volume if we found it */
1092 lock_ReleaseRead(&cm_volumeLock);
1095 return CM_ERROR_NOSUCHVOLUME;
1098 cm_data.mountRootGen = time(NULL);
1099 lock_ObtainWrite(&volp->rw);
1100 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1101 volp->lastUpdateTime = 0;
1103 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1104 lock_ReleaseWrite(&volp->rw);
1106 lock_ObtainRead(&cm_volumeLock);
1108 lock_ReleaseRead(&cm_volumeLock);
1113 /* find the appropriate servers from a volume */
1114 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1116 cm_serverRef_t **serverspp;
1117 cm_serverRef_t *current;
1121 lock_ObtainWrite(&cm_serverLock);
1123 if (volume == volp->vol[RWVOL].ID)
1124 serverspp = &volp->vol[RWVOL].serversp;
1125 else if (volume == volp->vol[ROVOL].ID)
1126 serverspp = &volp->vol[ROVOL].serversp;
1127 else if (volume == volp->vol[BACKVOL].ID)
1128 serverspp = &volp->vol[BACKVOL].serversp;
1130 lock_ReleaseWrite(&cm_serverLock);
1134 lock_ObtainWrite(&volp->rw);
1135 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1136 volp->lastUpdateTime = 0;
1137 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1138 lock_ReleaseWrite(&volp->rw);
1146 * Increment the refCount on deleted items as well.
1147 * They will be freed by cm_FreeServerList when they get to zero
1149 for (current = *serverspp; current; current = current->next)
1150 cm_GetServerRef(current, TRUE);
1152 lock_ReleaseWrite(&cm_serverLock);
1157 void cm_PutVolume(cm_volume_t *volp)
1159 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1160 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1163 /* return the read-only volume, if there is one, or the read-write volume if
1166 long cm_GetROVolumeID(cm_volume_t *volp)
1170 lock_ObtainRead(&volp->rw);
1171 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1172 id = volp->vol[ROVOL].ID;
1174 id = volp->vol[RWVOL].ID;
1175 lock_ReleaseRead(&volp->rw);
1180 void cm_RefreshVolumes(int lifetime)
1188 /* force mount point target updates */
1189 if (cm_data.mountRootGen + lifetime <= now)
1190 cm_data.mountRootGen = now;
1193 * force a re-loading of volume data from the vldb
1194 * if the lifetime for the cached data has expired
1196 lock_ObtainRead(&cm_volumeLock);
1197 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1198 InterlockedIncrement(&volp->refCount);
1199 lock_ReleaseRead(&cm_volumeLock);
1201 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1202 lock_ObtainWrite(&volp->rw);
1203 if (volp->lastUpdateTime + lifetime <= now) {
1204 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1205 volp->lastUpdateTime = 0;
1207 lock_ReleaseWrite(&volp->rw);
1210 lock_ObtainRead(&cm_volumeLock);
1211 refCount = InterlockedDecrement(&volp->refCount);
1212 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1214 lock_ReleaseRead(&cm_volumeLock);
1218 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1219 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1223 AFSFetchVolumeStatus volStat;
1228 struct rx_connection * rxconnp;
1230 char offLineMsg[256];
1232 long alldown, alldeleted;
1233 cm_serverRef_t *serversp;
1237 OfflineMsg = offLineMsg;
1240 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1241 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1242 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1244 if (!statep->serversp && !(*volumeUpdatedp)) {
1246 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1247 *volumeUpdatedp = 1;
1250 lock_ObtainRead(&cm_serverLock);
1251 if (statep->serversp) {
1254 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1255 if (serversp->status == srv_deleted)
1260 if (!(serversp->server->flags & CM_SERVERFLAG_DOWN))
1263 if (serversp->status == srv_busy || serversp->status == srv_offline)
1264 serversp->status = srv_not_busy;
1266 lock_ReleaseRead(&cm_serverLock);
1268 if (alldeleted && !(*volumeUpdatedp)) {
1270 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1271 *volumeUpdatedp = 1;
1274 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1275 (!alldown && statep->state == vl_alldown)) {
1277 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1279 lock_ReleaseWrite(&volp->rw);
1281 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1285 rxconnp = cm_GetRxConn(connp);
1286 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1287 &volStat, &Name, &OfflineMsg, &MOTD);
1288 rx_PutConnection(rxconnp);
1289 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, NULL, NULL, NULL, code));
1290 code = cm_MapRPCError(code, &req);
1292 lock_ObtainWrite(&volp->rw);
1293 if (code == 0 && volStat.Online) {
1294 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1295 statep->state = vl_online;
1297 } else if (code == CM_ERROR_NOACCESS) {
1298 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1299 statep->state = vl_unknown;
1302 } else if (alldown && statep->state != vl_alldown) {
1303 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1304 statep->state = vl_alldown;
1307 lock_ReleaseRead(&cm_serverLock);
1308 if (statep->state != vl_alldown) {
1309 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1310 statep->state = vl_alldown;
1316 /* The return code is 0 if the volume is not online and
1317 * 1 if the volume is online
1320 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1324 afs_uint32 online = 0;
1325 afs_uint32 volumeUpdated = 0;
1327 lock_ObtainWrite(&volp->rw);
1329 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1331 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1335 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1336 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1337 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1339 lock_ReleaseWrite(&volp->rw);
1345 * called from the Daemon thread.
1346 * when checking the offline status, check those of the most recently used volumes first.
1348 void cm_CheckOfflineVolumes(void)
1352 extern int daemon_ShutdownFlag;
1353 extern int powerStateSuspended;
1355 lock_ObtainRead(&cm_volumeLock);
1356 for (volp = cm_data.volumeLRULastp;
1357 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1358 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1360 * Skip volume entries that did not exist last time
1361 * the vldb was queried. For those entries wait until
1362 * the next actual request is received for the volume
1363 * before checking its state.
1365 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1366 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1367 InterlockedIncrement(&volp->refCount);
1368 lock_ReleaseRead(&cm_volumeLock);
1369 cm_CheckOfflineVolume(volp, 0);
1370 lock_ObtainRead(&cm_volumeLock);
1371 refCount = InterlockedDecrement(&volp->refCount);
1372 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1375 lock_ReleaseRead(&cm_volumeLock);
1380 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1382 enum volstatus newStatus;
1383 cm_serverRef_t *tsrp;
1385 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1388 if (!volp || !statep) {
1395 lock_ObtainWrite(&cm_serverLock);
1396 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1398 sprintf(addr, "%d.%d.%d.%d",
1399 ((tsp->addr.sin_addr.s_addr & 0xff)),
1400 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1401 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1402 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1404 if (tsrp->status == srv_deleted) {
1405 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1406 statep->ID, osi_LogSaveString(afsd_logp,addr));
1410 cm_GetServerNoLock(tsp);
1411 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1413 if (tsrp->status == srv_busy) {
1414 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1415 statep->ID, osi_LogSaveString(afsd_logp,addr));
1418 } else if (tsrp->status == srv_offline) {
1419 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1420 statep->ID, osi_LogSaveString(afsd_logp,addr));
1424 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1425 statep->ID, osi_LogSaveString(afsd_logp,addr));
1430 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1431 statep->ID, osi_LogSaveString(afsd_logp,addr));
1433 cm_PutServerNoLock(tsp);
1436 lock_ReleaseWrite(&cm_serverLock);
1438 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1439 allDown, allBusy, someBusy, someOffline, allOffline);
1442 newStatus = vl_alldown;
1443 else if (allBusy || (someBusy && someOffline))
1444 newStatus = vl_busy;
1445 else if (allOffline)
1446 newStatus = vl_offline;
1448 newStatus = vl_online;
1450 if (statep->ID && statep->state != newStatus)
1451 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1453 statep->state = newStatus;
1457 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1460 if (volp->vol[RWVOL].ID == volID) {
1461 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1462 } else if (volp->vol[ROVOL].ID == volID) {
1463 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1464 } else if (volp->vol[BACKVOL].ID == volID) {
1465 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1468 * If we are called with volID == 0 then something has gone wrong.
1469 * Most likely a race occurred in the server volume list maintenance.
1470 * Since we don't know which volume's status should be updated,
1471 * just update all of them that are known to exist. Better to be
1472 * correct than fast.
1475 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1476 if (volp->vol[volType].ID != 0)
1477 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1483 ** Finds all volumes that reside on this server and reorders their
1484 ** RO list according to the changed rank of server.
1486 void cm_ChangeRankVolume(cm_server_t *tsp)
1492 /* find volumes which might have RO copy on server*/
1493 lock_ObtainRead(&cm_volumeLock);
1494 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1496 code = 1 ; /* assume that list is unchanged */
1497 InterlockedIncrement(&volp->refCount);
1498 lock_ReleaseRead(&cm_volumeLock);
1499 lock_ObtainWrite(&volp->rw);
1501 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1502 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1504 /* this volume list was changed */
1506 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1508 lock_ReleaseWrite(&volp->rw);
1509 lock_ObtainRead(&cm_volumeLock);
1510 refCount = InterlockedDecrement(&volp->refCount);
1511 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1513 lock_ReleaseRead(&cm_volumeLock);
1516 /* dump all volumes that have reference count > 0 to a file.
1517 * cookie is used to identify this batch for easy parsing,
1518 * and it a string provided by a caller
1520 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1527 lock_ObtainRead(&cm_scacheLock);
1528 lock_ObtainRead(&cm_volumeLock);
1531 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1532 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1533 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1535 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1538 char *srvStr = NULL;
1539 afs_uint32 srvStrRpc = TRUE;
1543 if (volp->cbServerpRO) {
1544 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1545 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1546 srvStr = malloc(16);
1548 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1552 if (volp->cbExpiresRO) {
1553 t = volp->cbExpiresRO;
1557 cbt[strlen(cbt)-1] = '\0';
1560 if (volp->creationDateRO) {
1561 t = volp->creationDateRO;
1564 cdrot = strdup(cdrot);
1565 cdrot[strlen(cdrot)-1] = '\0';
1570 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1571 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1572 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1573 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1574 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1576 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1580 RpcStringFree(&srvStr);
1589 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1590 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1593 lock_ReleaseRead(&cm_volumeLock);
1594 lock_ReleaseRead(&cm_scacheLock);
1601 * String hash function used by SDBM project.
1602 * It was chosen because it is fast and provides
1605 afs_uint32 SDBMHash(const char * str)
1607 afs_uint32 hash = 0;
1613 for(i = 0, len = strlen(str); i < len; i++)
1615 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1618 return (hash & 0x7FFFFFFF);
1621 /* call with volume write-locked and mutex held */
1622 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1626 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1629 i = CM_VOLUME_NAME_HASH(volp->namep);
1631 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1632 cm_data.volumeNameHashTablep[i] = volp;
1633 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1636 /* call with volume write-locked and mutex held */
1637 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1639 cm_volume_t **lvolpp;
1643 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1644 /* hash it out first */
1645 i = CM_VOLUME_NAME_HASH(volp->namep);
1646 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1648 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1649 if (tvolp == volp) {
1650 *lvolpp = volp->nameNextp;
1651 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1652 volp->nameNextp = NULL;
1659 /* call with volume write-locked and mutex held */
1660 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1663 struct cm_vol_state * statep;
1665 statep = cm_VolumeStateByType(volp, volType);
1667 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1670 i = CM_VOLUME_ID_HASH(statep->ID);
1674 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1675 cm_data.volumeRWIDHashTablep[i] = volp;
1678 statep->nextp = cm_data.volumeROIDHashTablep[i];
1679 cm_data.volumeROIDHashTablep[i] = volp;
1682 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1683 cm_data.volumeBKIDHashTablep[i] = volp;
1686 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1690 /* call with volume write-locked and mutex held */
1691 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1693 cm_volume_t **lvolpp;
1695 struct cm_vol_state * statep;
1698 statep = cm_VolumeStateByType(volp, volType);
1700 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1701 /* hash it out first */
1702 i = CM_VOLUME_ID_HASH(statep->ID);
1706 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1707 tvolp = cm_data.volumeRWIDHashTablep[i];
1710 lvolpp = &cm_data.volumeROIDHashTablep[i];
1711 tvolp = cm_data.volumeROIDHashTablep[i];
1714 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1715 tvolp = cm_data.volumeBKIDHashTablep[i];
1718 osi_assertx(0, "invalid volume type");
1721 if (tvolp == volp) {
1722 *lvolpp = statep->nextp;
1723 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1724 statep->nextp = NULL;
1728 lvolpp = &tvolp->vol[volType].nextp;
1729 tvolp = tvolp->vol[volType].nextp;
1734 /* must be called with cm_volumeLock write-locked! */
1735 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1737 lock_AssertWrite(&cm_volumeLock);
1739 if (volp == cm_data.volumeLRUFirstp)
1742 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1743 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1744 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1745 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1747 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1750 /* must be called with cm_volumeLock write-locked! */
1751 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1753 lock_AssertWrite(&cm_volumeLock);
1755 if (volp == cm_data.volumeLRULastp)
1758 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1759 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1760 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1761 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1763 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1766 /* must be called with cm_volumeLock write-locked! */
1767 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1769 lock_AssertWrite(&cm_volumeLock);
1771 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1772 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1773 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1776 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1779 static char * volstatus_str(enum volstatus vs)
1795 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1797 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1800 if (volID == volp->vol[RWVOL].ID)
1802 else if (volID == volp->vol[ROVOL].ID)
1804 else if (volID == volp->vol[BACKVOL].ID)
1808 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1810 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1811 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1813 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1816 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1818 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1820 return statep->state;
1825 /* Renew .readonly volume callbacks that are more than
1826 * 30 minutes old. (A volume callback is issued for 2 hours.)
1829 cm_VolumeRenewROCallbacks(void)
1832 time_t minexp = time(NULL) + 90 * 60;
1833 extern int daemon_ShutdownFlag;
1834 extern int powerStateSuspended;
1836 lock_ObtainRead(&cm_volumeLock);
1837 for (volp = cm_data.allVolumesp;
1838 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1839 volp=volp->allNextp) {
1840 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1845 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1849 lock_ReleaseRead(&cm_volumeLock);
1850 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1851 lock_ObtainWrite(&scp->rw);
1852 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1853 lock_ReleaseWrite(&scp->rw);
1854 cm_ReleaseSCache(scp);
1856 lock_ObtainRead(&cm_volumeLock);
1859 lock_ReleaseRead(&cm_volumeLock);
1863 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1865 return &volp->vol[volType];
1869 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1871 cm_vol_state_t * statep = NULL;
1873 if (id == volp->vol[RWVOL].ID)
1874 statep = &volp->vol[RWVOL];
1875 else if (id == volp->vol[ROVOL].ID)
1876 statep = &volp->vol[ROVOL];
1877 else if (id == volp->vol[BACKVOL].ID)
1878 statep = &volp->vol[BACKVOL];
1884 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1886 size_t len = strlen(volname);
1887 cm_vol_state_t *statep;
1889 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1890 statep = &volp->vol[ROVOL];
1891 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1892 statep = &volp->vol[BACKVOL];
1894 statep = &volp->vol[RWVOL];
1900 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1902 if (id == volp->vol[RWVOL].ID)
1904 else if (id == volp->vol[ROVOL].ID)
1906 else if (id == volp->vol[BACKVOL].ID)