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 <afs/param.h>
22 osi_rwlock_t cm_volumeLock;
25 cm_ValidateVolume(void)
30 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
31 if ( volp->magic != CM_VOLUME_MAGIC ) {
32 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
33 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
36 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
37 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
38 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
41 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
42 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
43 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
46 if ( count != 0 && volp == cm_data.allVolumesp ||
47 count > cm_data.maxVolumes ) {
48 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
49 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
54 if ( count != cm_data.currentVolumes ) {
55 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
56 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
64 cm_ShutdownVolume(void)
68 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
70 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
71 if (volp->vol[volType].ID)
72 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
74 volp->cbExpiresRO = 0;
75 volp->cbServerpRO = NULL;
76 lock_FinalizeRWLock(&volp->rw);
82 void cm_InitVolume(int newFile, long maxVols)
84 static osi_once_t once;
86 if (osi_Once(&once)) {
87 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
90 cm_data.allVolumesp = NULL;
91 cm_data.currentVolumes = 0;
92 cm_data.maxVolumes = maxVols;
93 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
94 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
95 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
96 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
101 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
104 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
105 volp->flags |= CM_VOLUMEFLAG_RESET;
106 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
107 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
108 volp->vol[volType].state = vl_unknown;
109 volp->vol[volType].serversp = NULL;
110 if (volp->vol[volType].ID)
111 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
113 volp->cbExpiresRO = 0;
114 volp->cbServerpRO = NULL;
122 /* returns true if the id is a decimal integer, in which case we interpret it
123 * as an id. make the cache manager much simpler.
124 * Stolen from src/volser/vlprocs.c */
126 cm_VolNameIsID(char *aname)
129 while (tc = *aname++) {
130 if (tc > '9' || tc < '0')
138 * Update a volume. Caller holds a write lock on the volume (volp->rw).
141 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
142 * Yes, we support multihomed fileservers.
143 * Since before we got the code from IBM.
144 * But to find out about multiple addresses on a multihomed server, you need
145 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
146 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
147 * address per server.
148 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
149 * see src/afs/afs_volume.c, paying particular attention to
150 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
151 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
152 * thanks. The windows client calls the 0 versions.
153 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
155 * By not using the N versions, you only get up to 8 sites instead of 13.
156 * By not using the U versions, you don't get to know about multihomed serve
157 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
158 * Of course, you probably want to support the older versions for backward
159 * compatibility. If you do that, you need to call the newest interface
160 * first, and fall back to successively older versions if you get
164 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
170 cm_serverRef_t *tsrp;
172 struct sockaddr_in tsockAddr;
175 struct vldbentry vldbEntry;
176 struct nvldbentry nvldbEntry;
178 struct uvldbentry uvldbEntry;
183 enum volstatus rwNewstate = vl_online;
184 enum volstatus roNewstate = vl_online;
185 enum volstatus bkNewstate = vl_online;
186 #ifdef AFS_FREELANCE_CLIENT
191 lock_AssertWrite(&volp->rw);
193 #ifdef AFS_FREELANCE_CLIENT
194 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
197 memset(&vldbEntry, 0, sizeof(vldbEntry));
198 vldbEntry.flags |= VLF_RWEXISTS;
199 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
205 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
206 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
207 volp->cellp->name, volp->namep, volp->flags);
208 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
209 lock_ObtainWrite(&volp->rw);
210 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
211 volp->cellp->name, volp->namep, volp->flags);
212 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
213 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
214 volp->cellp->name, volp->namep, volp->flags);
215 osi_Wakeup((LONG_PTR) &volp->flags);
220 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
221 lock_ReleaseWrite(&volp->rw);
223 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
224 cm_UpdateCell(cellp, 0);
226 /* now we have volume structure locked and held; make RPC to fill it */
227 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
228 osi_LogSaveString(afsd_logp,volp->cellp->name),
229 osi_LogSaveString(afsd_logp,volp->namep));
231 struct rx_connection * rxconnp;
233 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
237 rxconnp = cm_GetRxConn(connp);
239 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
241 if ( code == RXGEN_OPCODE )
244 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
247 if ( code == RXGEN_OPCODE ) {
248 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
251 rx_PutConnection(rxconnp);
252 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
253 code = cm_MapVLRPCError(code, reqp);
255 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
256 osi_LogSaveString(afsd_logp,volp->cellp->name),
257 osi_LogSaveString(afsd_logp,volp->namep), code);
259 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
260 osi_LogSaveString(afsd_logp,volp->cellp->name),
261 osi_LogSaveString(afsd_logp,volp->namep));
264 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
265 * does not exist and is not a numeric string but there might exist a .readonly volume.
266 * If the base name doesn't exist we will not care about the .backup that might be left
267 * behind since there should be no method to access it.
269 if (code == CM_ERROR_NOSUCHVOLUME &&
270 _atoi64(volp->namep) == 0 &&
271 volp->vol[RWVOL].ID == 0 &&
272 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
273 char name[VL_MAXNAMELEN];
275 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
277 /* now we have volume structure locked and held; make RPC to fill it */
278 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
279 osi_LogSaveString(afsd_logp,volp->cellp->name),
280 osi_LogSaveString(afsd_logp,name));
282 struct rx_connection * rxconnp;
284 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
288 rxconnp = cm_GetRxConn(connp);
290 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
292 if ( code == RXGEN_OPCODE )
295 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
298 if ( code == RXGEN_OPCODE ) {
299 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
302 rx_PutConnection(rxconnp);
303 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
304 code = cm_MapVLRPCError(code, reqp);
306 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
307 osi_LogSaveString(afsd_logp,volp->cellp->name),
308 osi_LogSaveString(afsd_logp,name), code);
310 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
311 osi_LogSaveString(afsd_logp,volp->cellp->name),
312 osi_LogSaveString(afsd_logp,name));
315 lock_ObtainWrite(&volp->rw);
322 afs_int32 serverNumber[NMAXNSERVERS];
323 afs_int32 serverFlags[NMAXNSERVERS];
324 afsUUID serverUUID[NMAXNSERVERS];
325 afs_int32 rwServers_alldown = 1;
326 afs_int32 roServers_alldown = 1;
327 afs_int32 bkServers_alldown = 1;
328 char name[VL_MAXNAMELEN];
330 #ifdef AFS_FREELANCE_CLIENT
332 rwServers_alldown = 0;
335 /* clear out old bindings */
336 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
337 if (volp->vol[volType].serversp)
338 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
341 memset(serverUUID, 0, sizeof(serverUUID));
345 flags = vldbEntry.flags;
346 nServers = vldbEntry.nServers;
347 rwID = vldbEntry.volumeId[0];
348 roID = vldbEntry.volumeId[1];
349 bkID = vldbEntry.volumeId[2];
350 for ( i=0; i<nServers; i++ ) {
351 serverFlags[i] = vldbEntry.serverFlags[i];
352 serverNumber[i] = vldbEntry.serverNumber[i];
354 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
355 name[VL_MAXNAMELEN - 1] = '\0';
358 flags = nvldbEntry.flags;
359 nServers = nvldbEntry.nServers;
360 rwID = nvldbEntry.volumeId[0];
361 roID = nvldbEntry.volumeId[1];
362 bkID = nvldbEntry.volumeId[2];
363 for ( i=0; i<nServers; i++ ) {
364 serverFlags[i] = nvldbEntry.serverFlags[i];
365 serverNumber[i] = nvldbEntry.serverNumber[i];
367 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
368 name[VL_MAXNAMELEN - 1] = '\0';
372 flags = uvldbEntry.flags;
373 nServers = uvldbEntry.nServers;
374 rwID = uvldbEntry.volumeId[0];
375 roID = uvldbEntry.volumeId[1];
376 bkID = uvldbEntry.volumeId[2];
377 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
378 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
379 serverFlags[j] = uvldbEntry.serverFlags[i];
380 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
383 afs_uint32 * addrp, nentries, code, unique;
385 ListAddrByAttributes attrs;
388 memset(&attrs, 0, sizeof(attrs));
389 attrs.Mask = VLADDR_UUID;
390 attrs.uuid = uvldbEntry.serverNumber[i];
391 memset(&uuid, 0, sizeof(uuid));
392 memset(&addrs, 0, sizeof(addrs));
395 struct rx_connection *rxconnp;
397 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
401 rxconnp = cm_GetRxConn(connp);
402 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
403 rx_PutConnection(rxconnp);
404 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
407 code = cm_MapVLRPCError(code, reqp);
408 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
412 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
414 addrp = addrs.bulkaddrs_val;
415 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
416 serverFlags[j] = uvldbEntry.serverFlags[i];
417 serverNumber[j] = addrp[k];
418 serverUUID[j] = uuid;
421 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
424 code = CM_ERROR_INVAL;
427 nServers = j; /* update the server count */
428 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
429 name[VL_MAXNAMELEN - 1] = '\0';
434 /* decode the response */
435 lock_ObtainWrite(&cm_volumeLock);
436 if (cm_VolNameIsID(volp->namep)) {
441 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
442 name[len - 7] = '\0';
443 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
444 name[len - 9] = '\0';
447 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
448 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
450 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
451 cm_RemoveVolumeFromNameHashTable(volp);
453 strcpy(volp->namep, name);
455 cm_AddVolumeToNameHashTable(volp);
458 if (flags & VLF_DFSFILESET) {
459 volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
460 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
461 osi_LogSaveString(afsd_logp, volp->namep));
464 if (flags & VLF_RWEXISTS) {
465 if (volp->vol[RWVOL].ID != rwID) {
466 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
467 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
468 volp->vol[RWVOL].ID = rwID;
469 cm_AddVolumeToIDHashTable(volp, RWVOL);
472 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
473 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
474 volp->vol[RWVOL].ID = 0;
476 if (flags & VLF_ROEXISTS) {
477 if (volp->vol[ROVOL].ID != roID) {
478 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
479 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
480 volp->vol[ROVOL].ID = roID;
481 cm_AddVolumeToIDHashTable(volp, ROVOL);
484 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
485 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
486 volp->vol[ROVOL].ID = 0;
488 if (flags & VLF_BACKEXISTS) {
489 if (volp->vol[BACKVOL].ID != bkID) {
490 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
491 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
492 volp->vol[BACKVOL].ID = bkID;
493 cm_AddVolumeToIDHashTable(volp, BACKVOL);
496 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
497 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
498 volp->vol[BACKVOL].ID = 0;
500 lock_ReleaseWrite(&cm_volumeLock);
501 for (i=0; i<nServers; i++) {
502 /* create a server entry */
503 tflags = serverFlags[i];
504 if (tflags & VLSF_DONTUSE)
506 tsockAddr.sin_port = htons(7000);
507 tsockAddr.sin_family = AF_INET;
508 tempAddr = htonl(serverNumber[i]);
509 tsockAddr.sin_addr.s_addr = tempAddr;
510 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
511 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
513 * Check to see if the uuid of the server we know at this address
514 * matches the uuid of the server we are being told about by the
515 * vlserver. If not, ...?
517 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
518 char uuid1[128], uuid2[128];
521 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
522 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
523 afs_inet_ntoa_r(serverNumber[i], hoststr);
525 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
526 osi_LogSaveString(afsd_logp, uuid1),
527 osi_LogSaveString(afsd_logp, uuid2),
528 osi_LogSaveString(afsd_logp, hoststr));
533 * cm_NewServer will probe the file server which in turn will
534 * update the state on the volume group object
536 lock_ReleaseWrite(&volp->rw);
537 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
538 lock_ObtainWrite(&volp->rw);
540 osi_assertx(tsp != NULL, "null cm_server_t");
543 * if this server was created by fs setserverprefs
544 * then it won't have either a cell assignment or
549 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
550 !afs_uuid_is_nil(&serverUUID[i])) {
551 tsp->uuid = serverUUID[i];
552 tsp->flags |= CM_SERVERFLAG_UUID;
555 /* and add it to the list(s). */
557 * Each call to cm_NewServerRef() increments the
558 * ref count of tsp. These reference will be dropped,
559 * if and when the volume is reset; see reset code
560 * earlier in this function.
562 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
563 tsrp = cm_NewServerRef(tsp, rwID);
564 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
566 lock_ObtainWrite(&cm_serverLock);
567 tsrp->refCount--; /* drop allocation reference */
568 lock_ReleaseWrite(&cm_serverLock);
570 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
571 rwServers_alldown = 0;
573 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
574 tsrp = cm_NewServerRef(tsp, roID);
575 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
576 lock_ObtainWrite(&cm_serverLock);
577 tsrp->refCount--; /* drop allocation reference */
578 lock_ReleaseWrite(&cm_serverLock);
581 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
582 roServers_alldown = 0;
584 /* We don't use VLSF_BACKVOL !?! */
585 /* Because only the backup on the server holding the RW
586 * volume can be valid. This check prevents errors if a
587 * RW is moved but the old backup is not removed.
589 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
590 tsrp = cm_NewServerRef(tsp, bkID);
591 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
592 lock_ObtainWrite(&cm_serverLock);
593 tsrp->refCount--; /* drop allocation reference */
594 lock_ReleaseWrite(&cm_serverLock);
596 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
597 bkServers_alldown = 0;
599 /* Drop the reference obtained by cm_FindServer() */
606 * If the first n servers have the same ipRank, then we
607 * randomly pick one among them and move it to the beginning.
608 * We don't bother to re-order the whole list because
609 * the rest of the list is used only if the first server is
610 * down. We only do this for the RO list; we assume the other
611 * lists are length 1.
614 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
618 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
619 roNewstate = roServers_alldown ? vl_alldown : vl_online;
620 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
621 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
622 /* this volume does not exist - we should discard it */
623 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
624 cm_RemoveVolumeFromNameHashTable(volp);
625 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
626 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
627 cm_RemoveVolumeFromIDHashTable(volp, volType);
628 if (volp->vol[volType].ID) {
629 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
630 volp->vol[volType].ID = 0;
632 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
635 /* Move to the end so it will be recycled first */
636 cm_MoveVolumeToLRULast(volp);
638 volp->namep[0] ='\0';
640 rwNewstate = roNewstate = bkNewstate = vl_alldown;
643 if (volp->vol[RWVOL].state != rwNewstate) {
644 if (volp->vol[RWVOL].ID)
645 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
646 volp->vol[RWVOL].state = rwNewstate;
648 if (volp->vol[ROVOL].state != roNewstate) {
649 if (volp->vol[ROVOL].ID)
650 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
651 volp->vol[ROVOL].state = roNewstate;
653 if (volp->vol[BACKVOL].state != bkNewstate) {
654 if (volp->vol[BACKVOL].ID)
655 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
656 volp->vol[BACKVOL].state = bkNewstate;
660 volp->flags &= ~CM_VOLUMEFLAG_RESET;
662 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
663 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
664 osi_LogSaveString(afsd_logp,volp->cellp->name),
665 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
666 osi_Wakeup((LONG_PTR) &volp->flags);
671 /* Requires read or write lock on cm_volumeLock */
672 void cm_GetVolume(cm_volume_t *volp)
674 InterlockedIncrement(&volp->refCount);
677 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
682 lock_ObtainRead(&cm_volumeLock);
683 hash = CM_VOLUME_ID_HASH(fidp->volume);
684 /* The volumeID can be any one of the three types. So we must
685 * search the hash table for all three types until we find it.
686 * We will search in the order of RO, RW, BK.
688 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
689 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
694 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
695 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
701 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
702 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
707 /* hold the volume if we found it */
711 lock_ReleaseRead(&cm_volumeLock);
715 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
716 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
719 #ifdef SEARCH_ALL_VOLUMES
722 char volNameString[VL_MAXNAMELEN];
726 lock_ObtainRead(&cm_volumeLock);
727 #ifdef SEARCH_ALL_VOLUMES
728 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
729 if (cellp == volp->cellp &&
730 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
731 (unsigned) volumeID == volp->vol[ROVOL].ID ||
732 (unsigned) volumeID == volp->vol[BACKVOL].ID))
737 #endif /* SEARCH_ALL_VOLUMES */
739 hash = CM_VOLUME_ID_HASH(volumeID);
740 /* The volumeID can be any one of the three types. So we must
741 * search the hash table for all three types until we find it.
742 * We will search in the order of RO, RW, BK.
744 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
745 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
750 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
751 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
757 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
758 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
763 #ifdef SEARCH_ALL_VOLUMES
764 osi_assertx(volp == volp2, "unexpected cm_vol_t");
767 /* hold the volume if we found it */
771 lock_ReleaseRead(&cm_volumeLock);
775 lock_ObtainWrite(&volp->rw);
778 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
779 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
781 lock_ReleaseWrite(&volp->rw);
785 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
786 lock_ObtainWrite(&cm_volumeLock);
787 cm_AdjustVolumeLRU(volp);
788 lock_ReleaseWrite(&cm_volumeLock);
791 lock_ObtainRead(&cm_volumeLock);
793 lock_ReleaseRead(&cm_volumeLock);
798 /* otherwise, we didn't find it so consult the VLDB */
799 sprintf(volNameString, "%u", volumeID);
800 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
801 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
803 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
804 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
805 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
808 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
809 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
816 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
817 struct cm_user *userp, struct cm_req *reqp,
818 afs_uint32 flags, cm_volume_t **outVolpp)
821 #ifdef SEARCH_ALL_VOLUMES
825 char name[VL_MAXNAMELEN];
830 strncpy(name, volumeNamep, VL_MAXNAMELEN);
831 name[VL_MAXNAMELEN-1] = '\0';
834 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
836 name[len - 7] = '\0';
837 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
839 name[len - 9] = '\0';
844 lock_ObtainRead(&cm_volumeLock);
845 #ifdef SEARCH_ALL_VOLUMES
846 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
847 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
852 #endif /* SEARCH_ALL_VOLUMES */
854 hash = CM_VOLUME_NAME_HASH(name);
855 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
856 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
860 #ifdef SEARCH_ALL_VOLUMES
861 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
864 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
866 /* otherwise, get from VLDB */
869 * Change to a write lock so that we have exclusive use of
870 * the first cm_volume_t with a refCount of 0 so that we
871 * have time to increment it.
873 lock_ConvertRToW(&cm_volumeLock);
875 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
876 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
877 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
878 if ( volp->refCount == 0 ) {
879 /* There is one we can re-use */
884 for ( volp = cm_data.volumeLRULastp;
886 volp = (cm_volume_t *) osi_QPrev(&volp->q))
888 if ( volp->refCount == 0 ) {
889 /* There is one we can re-use */
895 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
897 InterlockedIncrement(&volp->refCount);
898 lock_ReleaseWrite(&cm_volumeLock);
899 lock_ObtainWrite(&volp->rw);
900 lock_ObtainWrite(&cm_volumeLock);
902 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
903 volp->cellp->name, volp->namep);
905 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
906 cm_RemoveVolumeFromLRU(volp);
907 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
908 cm_RemoveVolumeFromNameHashTable(volp);
910 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
911 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
912 cm_RemoveVolumeFromIDHashTable(volp, volType);
913 if (volp->vol[volType].ID)
914 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
915 volp->vol[volType].ID = 0;
916 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
917 lock_ReleaseWrite(&cm_volumeLock);
918 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
919 lock_ObtainWrite(&cm_volumeLock);
922 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
923 memset(volp, 0, sizeof(cm_volume_t));
924 volp->magic = CM_VOLUME_MAGIC;
925 volp->allNextp = cm_data.allVolumesp;
926 cm_data.allVolumesp = volp;
927 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
928 lock_ReleaseWrite(&cm_volumeLock);
929 lock_ObtainWrite(&volp->rw);
930 lock_ObtainWrite(&cm_volumeLock);
931 volp->refCount = 1; /* starts off held */
934 strncpy(volp->namep, name, VL_MAXNAMELEN);
935 volp->namep[VL_MAXNAMELEN-1] = '\0';
936 volp->flags = CM_VOLUMEFLAG_RESET;
938 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
939 volp->vol[volType].state = vl_unknown;
940 volp->vol[volType].nextp = NULL;
941 volp->vol[volType].flags = 0;
943 volp->cbExpiresRO = 0;
944 volp->cbServerpRO = NULL;
945 volp->creationDateRO = 0;
946 cm_AddVolumeToNameHashTable(volp);
947 lock_ReleaseWrite(&cm_volumeLock);
952 lock_ReleaseRead(&cm_volumeLock);
955 return CM_ERROR_NOSUCHVOLUME;
957 lock_ObtainWrite(&volp->rw);
960 /* if we get here we are holding the mutex */
961 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
962 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
964 lock_ReleaseWrite(&volp->rw);
966 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
967 type == ROVOL && volp->vol[ROVOL].ID == 0))
968 code = CM_ERROR_NOSUCHVOLUME;
973 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
974 lock_ObtainWrite(&cm_volumeLock);
975 cm_AdjustVolumeLRU(volp);
976 lock_ReleaseWrite(&cm_volumeLock);
979 lock_ObtainRead(&cm_volumeLock);
981 lock_ReleaseRead(&cm_volumeLock);
984 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
985 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
986 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
989 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
990 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
997 * Only call this function in response to a VNOVOL or VMOVED error
998 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
999 * as that can lead to recursive calls.
1001 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1005 #ifdef SEARCH_ALL_VOLUMES
1012 return CM_ERROR_INVAL;
1014 cellp = cm_FindCellByID(fidp->cell, 0);
1016 return CM_ERROR_NOSUCHCELL;
1018 /* search for the volume */
1019 lock_ObtainRead(&cm_volumeLock);
1020 #ifdef SEARCH_ALL_VOLUMES
1021 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1022 if (cellp == volp->cellp &&
1023 (fidp->volume == volp->vol[RWVOL].ID ||
1024 fidp->volume == volp->vol[ROVOL].ID ||
1025 fidp->volume == volp->vol[BACKVOL].ID))
1028 #endif /* SEARCH_ALL_VOLUMES */
1030 hash = CM_VOLUME_ID_HASH(fidp->volume);
1031 /* The volumeID can be any one of the three types. So we must
1032 * search the hash table for all three types until we find it.
1033 * We will search in the order of RO, RW, BK.
1035 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1036 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1040 /* try RW volumes */
1041 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1042 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1047 /* try BK volumes */
1048 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1049 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1054 #ifdef SEARCH_ALL_VOLUMES
1055 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1057 /* hold the volume if we found it */
1061 lock_ReleaseRead(&cm_volumeLock);
1064 return CM_ERROR_NOSUCHVOLUME;
1067 cm_data.mountRootGen = time(NULL);
1068 lock_ObtainWrite(&volp->rw);
1069 volp->flags |= CM_VOLUMEFLAG_RESET;
1071 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1072 lock_ReleaseWrite(&volp->rw);
1074 lock_ObtainRead(&cm_volumeLock);
1076 lock_ReleaseRead(&cm_volumeLock);
1081 /* find the appropriate servers from a volume */
1082 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1084 cm_serverRef_t **serverspp;
1085 cm_serverRef_t *current;
1089 lock_ObtainWrite(&cm_serverLock);
1091 if (volume == volp->vol[RWVOL].ID)
1092 serverspp = &volp->vol[RWVOL].serversp;
1093 else if (volume == volp->vol[ROVOL].ID)
1094 serverspp = &volp->vol[ROVOL].serversp;
1095 else if (volume == volp->vol[BACKVOL].ID)
1096 serverspp = &volp->vol[BACKVOL].serversp;
1098 lock_ReleaseWrite(&cm_serverLock);
1102 lock_ObtainWrite(&volp->rw);
1103 volp->flags |= CM_VOLUMEFLAG_RESET;
1104 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1105 lock_ReleaseWrite(&volp->rw);
1113 * Increment the refCount on deleted items as well.
1114 * They will be freed by cm_FreeServerList when they get to zero
1116 for (current = *serverspp; current; current = current->next)
1117 current->refCount++;
1119 lock_ReleaseWrite(&cm_serverLock);
1124 void cm_PutVolume(cm_volume_t *volp)
1126 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1127 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1130 /* return the read-only volume, if there is one, or the read-write volume if
1133 long cm_GetROVolumeID(cm_volume_t *volp)
1137 lock_ObtainRead(&volp->rw);
1138 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1139 id = volp->vol[ROVOL].ID;
1141 id = volp->vol[RWVOL].ID;
1142 lock_ReleaseRead(&volp->rw);
1147 void cm_RefreshVolumes(void)
1153 cm_data.mountRootGen = time(NULL);
1155 /* force a re-loading of volume data from the vldb */
1156 lock_ObtainRead(&cm_volumeLock);
1157 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1158 InterlockedIncrement(&volp->refCount);
1159 lock_ReleaseRead(&cm_volumeLock);
1161 lock_ObtainWrite(&volp->rw);
1162 volp->flags |= CM_VOLUMEFLAG_RESET;
1163 lock_ReleaseWrite(&volp->rw);
1165 lock_ObtainRead(&cm_volumeLock);
1166 refCount = InterlockedDecrement(&volp->refCount);
1167 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1169 lock_ReleaseRead(&cm_volumeLock);
1171 /* force mount points to be re-evaluated so that
1172 * if the volume location has changed we will pick
1175 for ( scp = cm_data.scacheLRUFirstp;
1177 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1178 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1179 #ifdef AFS_FREELANCE_CLIENT
1180 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1183 lock_ObtainWrite(&scp->rw);
1184 scp->mountPointStringp[0] = '\0';
1185 lock_ReleaseWrite(&scp->rw);
1192 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1193 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1197 AFSFetchVolumeStatus volStat;
1202 struct rx_connection * rxconnp;
1204 char offLineMsg[256];
1206 long alldown, alldeleted;
1207 cm_serverRef_t *serversp;
1210 OfflineMsg = offLineMsg;
1213 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1214 if (!statep->serversp && !(*volumeUpdatedp)) {
1216 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1217 *volumeUpdatedp = 1;
1220 if (statep->serversp) {
1223 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1224 if (serversp->status == srv_deleted)
1231 if (serversp->status == srv_busy || serversp->status == srv_offline)
1232 serversp->status = srv_not_busy;
1235 if (alldeleted && !(*volumeUpdatedp)) {
1237 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1238 *volumeUpdatedp = 1;
1241 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1242 (!alldown && statep->state == vl_alldown)) {
1245 lock_ReleaseWrite(&volp->rw);
1247 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1251 rxconnp = cm_GetRxConn(connp);
1252 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1253 &volStat, &Name, &OfflineMsg, &MOTD);
1254 rx_PutConnection(rxconnp);
1256 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1257 code = cm_MapRPCError(code, &req);
1259 lock_ObtainWrite(&volp->rw);
1260 if (code == 0 && volStat.Online) {
1261 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1262 statep->state = vl_online;
1264 } else if (code == CM_ERROR_NOACCESS) {
1265 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1266 statep->state = vl_unknown;
1269 } else if (alldown && statep->state != vl_alldown) {
1270 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1271 statep->state = vl_alldown;
1273 } else if (statep->state != vl_alldown) {
1274 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1275 statep->state = vl_alldown;
1280 /* The return code is 0 if the volume is not online and
1281 * 1 if the volume is online
1284 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1288 afs_uint32 online = 0;
1289 afs_uint32 volumeUpdated = 0;
1291 lock_ObtainWrite(&volp->rw);
1293 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1295 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1299 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1300 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1301 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1303 lock_ReleaseWrite(&volp->rw);
1309 * called from the Daemon thread.
1310 * when checking the offline status, check those of the most recently used volumes first.
1312 void cm_CheckOfflineVolumes(void)
1316 extern int daemon_ShutdownFlag;
1317 extern int powerStateSuspended;
1319 lock_ObtainRead(&cm_volumeLock);
1320 for (volp = cm_data.volumeLRULastp;
1321 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1322 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1323 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1324 InterlockedIncrement(&volp->refCount);
1325 lock_ReleaseRead(&cm_volumeLock);
1326 cm_CheckOfflineVolume(volp, 0);
1327 lock_ObtainRead(&cm_volumeLock);
1328 refCount = InterlockedDecrement(&volp->refCount);
1329 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1332 lock_ReleaseRead(&cm_volumeLock);
1337 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1339 enum volstatus newStatus;
1340 cm_serverRef_t *tsrp;
1342 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1345 if (!volp || !statep) {
1352 lock_ObtainWrite(&cm_serverLock);
1353 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1355 sprintf(addr, "%d.%d.%d.%d",
1356 ((tsp->addr.sin_addr.s_addr & 0xff)),
1357 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1358 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1359 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1361 if (tsrp->status == srv_deleted) {
1362 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1363 statep->ID, osi_LogSaveString(afsd_logp,addr));
1367 cm_GetServerNoLock(tsp);
1368 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1370 if (tsrp->status == srv_busy) {
1371 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1372 statep->ID, osi_LogSaveString(afsd_logp,addr));
1375 } else if (tsrp->status == srv_offline) {
1376 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1377 statep->ID, osi_LogSaveString(afsd_logp,addr));
1381 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1382 statep->ID, osi_LogSaveString(afsd_logp,addr));
1387 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1388 statep->ID, osi_LogSaveString(afsd_logp,addr));
1390 cm_PutServerNoLock(tsp);
1393 lock_ReleaseWrite(&cm_serverLock);
1395 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1396 allDown, allBusy, someBusy, someOffline, allOffline);
1399 newStatus = vl_alldown;
1400 else if (allBusy || (someBusy && someOffline))
1401 newStatus = vl_busy;
1402 else if (allOffline)
1403 newStatus = vl_offline;
1405 newStatus = vl_online;
1407 if (statep->ID && statep->state != newStatus)
1408 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1410 statep->state = newStatus;
1414 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1417 if (volp->vol[RWVOL].ID == volID) {
1418 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1419 } else if (volp->vol[ROVOL].ID == volID) {
1420 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1421 } else if (volp->vol[BACKVOL].ID == volID) {
1422 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1425 * If we are called with volID == 0 then something has gone wrong.
1426 * Most likely a race occurred in the server volume list maintenance.
1427 * Since we don't know which volume's status should be updated,
1428 * just update all of them that are known to exist. Better to be
1429 * correct than fast.
1432 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1433 if (volp->vol[volType].ID != 0)
1434 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1440 ** Finds all volumes that reside on this server and reorders their
1441 ** RO list according to the changed rank of server.
1443 void cm_ChangeRankVolume(cm_server_t *tsp)
1449 /* find volumes which might have RO copy on server*/
1450 lock_ObtainRead(&cm_volumeLock);
1451 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1453 code = 1 ; /* assume that list is unchanged */
1454 InterlockedIncrement(&volp->refCount);
1455 lock_ReleaseRead(&cm_volumeLock);
1456 lock_ObtainWrite(&volp->rw);
1458 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1459 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1461 /* this volume list was changed */
1463 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1465 lock_ReleaseWrite(&volp->rw);
1466 lock_ObtainRead(&cm_volumeLock);
1467 refCount = InterlockedDecrement(&volp->refCount);
1468 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1470 lock_ReleaseRead(&cm_volumeLock);
1473 /* dump all volumes that have reference count > 0 to a file.
1474 * cookie is used to identify this batch for easy parsing,
1475 * and it a string provided by a caller
1477 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1484 lock_ObtainRead(&cm_scacheLock);
1485 lock_ObtainRead(&cm_volumeLock);
1488 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1489 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1490 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1492 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1495 char *srvStr = NULL;
1496 afs_uint32 srvStrRpc = TRUE;
1500 if (volp->cbServerpRO) {
1501 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1502 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1503 afs_asprintf(&srvStr, "%.0I", volp->cbServerpRO->addr.sin_addr.s_addr);
1507 if (volp->cbExpiresRO) {
1508 t = volp->cbExpiresRO;
1512 cbt[strlen(cbt)-1] = '\0';
1515 if (volp->creationDateRO) {
1516 t = volp->creationDateRO;
1519 cdrot = strdup(cdrot);
1520 cdrot[strlen(cdrot)-1] = '\0';
1525 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x "
1526 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1527 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1528 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1529 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1531 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1535 RpcStringFree(&srvStr);
1544 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1545 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1548 lock_ReleaseRead(&cm_volumeLock);
1549 lock_ReleaseRead(&cm_scacheLock);
1556 * String hash function used by SDBM project.
1557 * It was chosen because it is fast and provides
1560 afs_uint32 SDBMHash(const char * str)
1562 afs_uint32 hash = 0;
1568 for(i = 0, len = strlen(str); i < len; i++)
1570 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1573 return (hash & 0x7FFFFFFF);
1576 /* call with volume write-locked and mutex held */
1577 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1581 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1584 i = CM_VOLUME_NAME_HASH(volp->namep);
1586 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1587 cm_data.volumeNameHashTablep[i] = volp;
1588 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1591 /* call with volume write-locked and mutex held */
1592 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1594 cm_volume_t **lvolpp;
1598 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1599 /* hash it out first */
1600 i = CM_VOLUME_NAME_HASH(volp->namep);
1601 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1603 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1604 if (tvolp == volp) {
1605 *lvolpp = volp->nameNextp;
1606 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1607 volp->nameNextp = NULL;
1614 /* call with volume write-locked and mutex held */
1615 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1618 struct cm_vol_state * statep;
1620 statep = cm_VolumeStateByType(volp, volType);
1622 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1625 i = CM_VOLUME_ID_HASH(statep->ID);
1629 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1630 cm_data.volumeRWIDHashTablep[i] = volp;
1633 statep->nextp = cm_data.volumeROIDHashTablep[i];
1634 cm_data.volumeROIDHashTablep[i] = volp;
1637 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1638 cm_data.volumeBKIDHashTablep[i] = volp;
1641 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1645 /* call with volume write-locked and mutex held */
1646 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1648 cm_volume_t **lvolpp;
1650 struct cm_vol_state * statep;
1653 statep = cm_VolumeStateByType(volp, volType);
1655 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1656 /* hash it out first */
1657 i = CM_VOLUME_ID_HASH(statep->ID);
1661 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1662 tvolp = cm_data.volumeRWIDHashTablep[i];
1665 lvolpp = &cm_data.volumeROIDHashTablep[i];
1666 tvolp = cm_data.volumeROIDHashTablep[i];
1669 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1670 tvolp = cm_data.volumeBKIDHashTablep[i];
1673 osi_assertx(0, "invalid volume type");
1676 if (tvolp == volp) {
1677 *lvolpp = statep->nextp;
1678 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1679 statep->nextp = NULL;
1683 lvolpp = &tvolp->vol[volType].nextp;
1684 tvolp = tvolp->vol[volType].nextp;
1689 /* must be called with cm_volumeLock write-locked! */
1690 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1692 if (volp == cm_data.volumeLRULastp)
1693 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1694 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1695 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1696 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1697 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1698 if (!cm_data.volumeLRULastp)
1699 cm_data.volumeLRULastp = volp;
1702 /* must be called with cm_volumeLock write-locked! */
1703 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1705 if (volp == cm_data.volumeLRULastp)
1708 if (volp == cm_data.volumeLRUFirstp)
1709 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1710 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1711 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1712 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1713 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1714 if (!cm_data.volumeLRULastp)
1715 cm_data.volumeLRULastp = volp;
1718 /* must be called with cm_volumeLock write-locked! */
1719 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1721 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1722 if (volp == cm_data.volumeLRULastp)
1723 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1724 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1725 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1729 static char * volstatus_str(enum volstatus vs)
1745 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1747 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1750 if (volID == volp->vol[RWVOL].ID)
1752 else if (volID == volp->vol[ROVOL].ID)
1754 else if (volID == volp->vol[BACKVOL].ID)
1758 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1760 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1761 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1763 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1766 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1768 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1770 return statep->state;
1775 /* Renew .readonly volume callbacks that are more than
1776 * 30 minutes old. (A volume callback is issued for 2 hours.)
1779 cm_VolumeRenewROCallbacks(void)
1782 time_t minexp = time(NULL) + 90 * 60;
1783 extern int daemon_ShutdownFlag;
1784 extern int powerStateSuspended;
1786 lock_ObtainRead(&cm_volumeLock);
1787 for (volp = cm_data.allVolumesp;
1788 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1789 volp=volp->allNextp) {
1790 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1795 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1799 lock_ReleaseRead(&cm_volumeLock);
1800 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1801 lock_ObtainWrite(&scp->rw);
1802 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1803 lock_ReleaseWrite(&scp->rw);
1804 cm_ReleaseSCache(scp);
1806 lock_ObtainRead(&cm_volumeLock);
1809 lock_ReleaseRead(&cm_volumeLock);
1813 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1815 return &volp->vol[volType];
1819 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1821 cm_vol_state_t * statep = NULL;
1823 if (id == volp->vol[RWVOL].ID)
1824 statep = &volp->vol[RWVOL];
1825 else if (id == volp->vol[ROVOL].ID)
1826 statep = &volp->vol[ROVOL];
1827 else if (id == volp->vol[BACKVOL].ID)
1828 statep = &volp->vol[BACKVOL];
1834 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1836 size_t len = strlen(volname);
1837 cm_vol_state_t *statep;
1839 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1840 statep = &volp->vol[ROVOL];
1841 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1842 statep = &volp->vol[BACKVOL];
1844 statep = &volp->vol[RWVOL];
1850 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1852 if (id == volp->vol[RWVOL].ID)
1854 else if (id == volp->vol[ROVOL].ID)
1856 else if (id == volp->vol[BACKVOL].ID)