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 /* clear out old bindings */
221 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
222 if (volp->vol[volType].serversp)
223 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
226 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
227 lock_ReleaseWrite(&volp->rw);
229 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
230 cm_UpdateCell(cellp, 0);
232 /* now we have volume structure locked and held; make RPC to fill it */
233 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
234 osi_LogSaveString(afsd_logp,volp->cellp->name),
235 osi_LogSaveString(afsd_logp,volp->namep));
237 struct rx_connection * rxconnp;
239 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
243 rxconnp = cm_GetRxConn(connp);
245 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
247 if ( code == RXGEN_OPCODE )
250 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
253 if ( code == RXGEN_OPCODE ) {
254 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
257 rx_PutConnection(rxconnp);
258 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
259 code = cm_MapVLRPCError(code, reqp);
261 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
262 osi_LogSaveString(afsd_logp,volp->cellp->name),
263 osi_LogSaveString(afsd_logp,volp->namep), code);
265 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
266 osi_LogSaveString(afsd_logp,volp->cellp->name),
267 osi_LogSaveString(afsd_logp,volp->namep));
270 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
271 * does not exist but there might exist a .readonly volume. If the base name
272 * doesn't exist we will not care about the .backup that might be left behind
273 * since there should be no method to access it.
275 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
276 char name[VL_MAXNAMELEN];
278 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
280 /* now we have volume structure locked and held; make RPC to fill it */
281 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
282 osi_LogSaveString(afsd_logp,volp->cellp->name),
283 osi_LogSaveString(afsd_logp,name));
285 struct rx_connection * rxconnp;
287 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
291 rxconnp = cm_GetRxConn(connp);
293 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
295 if ( code == RXGEN_OPCODE )
298 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
301 if ( code == RXGEN_OPCODE ) {
302 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
305 rx_PutConnection(rxconnp);
306 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
307 code = cm_MapVLRPCError(code, reqp);
309 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
310 osi_LogSaveString(afsd_logp,volp->cellp->name),
311 osi_LogSaveString(afsd_logp,name), code);
313 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
314 osi_LogSaveString(afsd_logp,volp->cellp->name),
315 osi_LogSaveString(afsd_logp,name));
318 lock_ObtainWrite(&volp->rw);
325 afs_int32 serverNumber[NMAXNSERVERS];
326 afs_int32 serverFlags[NMAXNSERVERS];
327 afsUUID serverUUID[NMAXNSERVERS];
328 afs_int32 rwServers_alldown = 1;
329 afs_int32 roServers_alldown = 1;
330 afs_int32 bkServers_alldown = 1;
331 char name[VL_MAXNAMELEN];
333 #ifdef AFS_FREELANCE_CLIENT
335 rwServers_alldown = 0;
338 memset(serverUUID, 0, sizeof(serverUUID));
342 flags = vldbEntry.flags;
343 nServers = vldbEntry.nServers;
344 rwID = vldbEntry.volumeId[0];
345 roID = vldbEntry.volumeId[1];
346 bkID = vldbEntry.volumeId[2];
347 for ( i=0; i<nServers; i++ ) {
348 serverFlags[i] = vldbEntry.serverFlags[i];
349 serverNumber[i] = vldbEntry.serverNumber[i];
351 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
352 name[VL_MAXNAMELEN - 1] = '\0';
355 flags = nvldbEntry.flags;
356 nServers = nvldbEntry.nServers;
357 rwID = nvldbEntry.volumeId[0];
358 roID = nvldbEntry.volumeId[1];
359 bkID = nvldbEntry.volumeId[2];
360 for ( i=0; i<nServers; i++ ) {
361 serverFlags[i] = nvldbEntry.serverFlags[i];
362 serverNumber[i] = nvldbEntry.serverNumber[i];
364 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
365 name[VL_MAXNAMELEN - 1] = '\0';
369 flags = uvldbEntry.flags;
370 nServers = uvldbEntry.nServers;
371 rwID = uvldbEntry.volumeId[0];
372 roID = uvldbEntry.volumeId[1];
373 bkID = uvldbEntry.volumeId[2];
374 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
375 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
376 serverFlags[j] = uvldbEntry.serverFlags[i];
377 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
380 afs_uint32 * addrp, nentries, code, unique;
382 ListAddrByAttributes attrs;
385 memset((char *)&attrs, 0, sizeof(attrs));
386 attrs.Mask = VLADDR_UUID;
387 attrs.uuid = uvldbEntry.serverNumber[i];
388 memset((char *)&uuid, 0, sizeof(uuid));
389 memset((char *)&addrs, 0, sizeof(addrs));
392 struct rx_connection *rxconnp;
394 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
398 rxconnp = cm_GetRxConn(connp);
399 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
400 rx_PutConnection(rxconnp);
401 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
404 code = cm_MapVLRPCError(code, reqp);
405 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
409 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
411 addrp = addrs.bulkaddrs_val;
412 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
413 serverFlags[j] = uvldbEntry.serverFlags[i];
414 serverNumber[j] = addrp[k];
415 serverUUID[j] = uuid;
418 xdr_free(addrs.bulkaddrs_val, addrs.bulkaddrs_len * sizeof(*addrs.bulkaddrs_val));
421 code = CM_ERROR_INVAL;
424 nServers = j; /* update the server count */
425 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
426 name[VL_MAXNAMELEN - 1] = '\0';
431 /* decode the response */
432 lock_ObtainWrite(&cm_volumeLock);
433 if (cm_VolNameIsID(volp->namep)) {
438 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
439 name[len - 7] = '\0';
440 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
441 name[len - 9] = '\0';
444 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
445 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
447 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
448 cm_RemoveVolumeFromNameHashTable(volp);
450 strcpy(volp->namep, name);
452 cm_AddVolumeToNameHashTable(volp);
455 if (flags & VLF_DFSFILESET) {
456 volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
457 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
458 osi_LogSaveString(afsd_logp, volp->namep));
461 if (flags & VLF_RWEXISTS) {
462 if (volp->vol[RWVOL].ID != rwID) {
463 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
464 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
465 volp->vol[RWVOL].ID = rwID;
466 cm_AddVolumeToIDHashTable(volp, RWVOL);
469 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
470 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
471 volp->vol[RWVOL].ID = 0;
473 if (flags & VLF_ROEXISTS) {
474 if (volp->vol[ROVOL].ID != roID) {
475 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
476 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
477 volp->vol[ROVOL].ID = roID;
478 cm_AddVolumeToIDHashTable(volp, ROVOL);
481 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
482 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
483 volp->vol[ROVOL].ID = 0;
485 if (flags & VLF_BACKEXISTS) {
486 if (volp->vol[BACKVOL].ID != bkID) {
487 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
488 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
489 volp->vol[BACKVOL].ID = bkID;
490 cm_AddVolumeToIDHashTable(volp, BACKVOL);
493 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
494 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
495 volp->vol[BACKVOL].ID = 0;
497 lock_ReleaseWrite(&cm_volumeLock);
498 for (i=0; i<nServers; i++) {
499 /* create a server entry */
500 tflags = serverFlags[i];
501 if (tflags & VLSF_DONTUSE)
503 tsockAddr.sin_port = htons(7000);
504 tsockAddr.sin_family = AF_INET;
505 tempAddr = htonl(serverNumber[i]);
506 tsockAddr.sin_addr.s_addr = tempAddr;
507 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
508 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
510 * Check to see if the uuid of the server we know at this address
511 * matches the uuid of the server we are being told about by the
512 * vlserver. If not, ...?
514 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
515 char uuid1[128], uuid2[128];
518 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
519 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
520 afs_inet_ntoa_r(serverNumber[i], hoststr);
522 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
523 osi_LogSaveString(afsd_logp, uuid1),
524 osi_LogSaveString(afsd_logp, uuid2),
525 osi_LogSaveString(afsd_logp, hoststr));
529 /* cm_NewServer will probe the server which in turn will
530 * update the state on the volume group object */
531 lock_ReleaseWrite(&volp->rw);
532 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
533 lock_ObtainWrite(&volp->rw);
535 osi_assertx(tsp != NULL, "null cm_server_t");
538 * if this server was created by fs setserverprefs
539 * then it won't have either a cell assignment or
544 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
545 !afs_uuid_is_nil(&serverUUID[i])) {
546 tsp->uuid = serverUUID[i];
547 tsp->flags |= CM_SERVERFLAG_UUID;
550 /* and add it to the list(s). */
552 * Each call to cm_NewServerRef() increments the
553 * ref count of tsp. These reference will be dropped,
554 * if and when the volume is reset; see reset code
555 * earlier in this function.
557 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
558 tsrp = cm_NewServerRef(tsp, rwID);
559 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
561 lock_ObtainWrite(&cm_serverLock);
562 tsrp->refCount--; /* drop allocation reference */
563 lock_ReleaseWrite(&cm_serverLock);
565 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
566 rwServers_alldown = 0;
568 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
569 tsrp = cm_NewServerRef(tsp, roID);
570 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
571 lock_ObtainWrite(&cm_serverLock);
572 tsrp->refCount--; /* drop allocation reference */
573 lock_ReleaseWrite(&cm_serverLock);
576 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
577 roServers_alldown = 0;
579 /* We don't use VLSF_BACKVOL !?! */
580 /* Because only the backup on the server holding the RW
581 * volume can be valid. This check prevents errors if a
582 * RW is moved but the old backup is not removed.
584 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
585 tsrp = cm_NewServerRef(tsp, bkID);
586 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
587 lock_ObtainWrite(&cm_serverLock);
588 tsrp->refCount--; /* drop allocation reference */
589 lock_ReleaseWrite(&cm_serverLock);
591 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
592 bkServers_alldown = 0;
594 /* Drop the reference obtained by cm_FindServer() */
601 * If the first n servers have the same ipRank, then we
602 * randomly pick one among them and move it to the beginning.
603 * We don't bother to re-order the whole list because
604 * the rest of the list is used only if the first server is
605 * down. We only do this for the RO list; we assume the other
606 * lists are length 1.
609 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
613 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
614 roNewstate = roServers_alldown ? vl_alldown : vl_online;
615 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
616 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
617 /* this volume does not exist - we should discard it */
618 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
619 cm_RemoveVolumeFromNameHashTable(volp);
620 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
621 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
622 cm_RemoveVolumeFromIDHashTable(volp, volType);
623 if (volp->vol[volType].ID) {
624 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
625 volp->vol[volType].ID = 0;
627 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
630 /* Move to the end so it will be recycled first */
631 cm_MoveVolumeToLRULast(volp);
633 volp->namep[0] ='\0';
635 rwNewstate = roNewstate = bkNewstate = vl_alldown;
638 if (volp->vol[RWVOL].state != rwNewstate) {
639 if (volp->vol[RWVOL].ID)
640 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
641 volp->vol[RWVOL].state = rwNewstate;
643 if (volp->vol[ROVOL].state != roNewstate) {
644 if (volp->vol[ROVOL].ID)
645 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
646 volp->vol[ROVOL].state = roNewstate;
648 if (volp->vol[BACKVOL].state != bkNewstate) {
649 if (volp->vol[BACKVOL].ID)
650 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
651 volp->vol[BACKVOL].state = bkNewstate;
655 volp->flags &= ~CM_VOLUMEFLAG_RESET;
657 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
658 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
659 osi_LogSaveString(afsd_logp,volp->cellp->name),
660 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
661 osi_Wakeup((LONG_PTR) &volp->flags);
666 /* Requires read or write lock on cm_volumeLock */
667 void cm_GetVolume(cm_volume_t *volp)
669 InterlockedIncrement(&volp->refCount);
672 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
677 lock_ObtainRead(&cm_volumeLock);
678 hash = CM_VOLUME_ID_HASH(fidp->volume);
679 /* The volumeID can be any one of the three types. So we must
680 * search the hash table for all three types until we find it.
681 * We will search in the order of RO, RW, BK.
683 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
684 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
689 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
690 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
696 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
697 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
702 /* hold the volume if we found it */
706 lock_ReleaseRead(&cm_volumeLock);
710 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
711 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
714 #ifdef SEARCH_ALL_VOLUMES
717 char volNameString[VL_MAXNAMELEN];
721 lock_ObtainRead(&cm_volumeLock);
722 #ifdef SEARCH_ALL_VOLUMES
723 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
724 if (cellp == volp->cellp &&
725 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
726 (unsigned) volumeID == volp->vol[ROVOL].ID ||
727 (unsigned) volumeID == volp->vol[BACKVOL].ID))
732 #endif /* SEARCH_ALL_VOLUMES */
734 hash = CM_VOLUME_ID_HASH(volumeID);
735 /* The volumeID can be any one of the three types. So we must
736 * search the hash table for all three types until we find it.
737 * We will search in the order of RO, RW, BK.
739 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
740 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
745 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
746 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
752 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
753 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
758 #ifdef SEARCH_ALL_VOLUMES
759 osi_assertx(volp == volp2, "unexpected cm_vol_t");
762 /* hold the volume if we found it */
766 lock_ReleaseRead(&cm_volumeLock);
770 lock_ObtainWrite(&volp->rw);
773 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
774 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
776 lock_ReleaseWrite(&volp->rw);
780 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
781 lock_ObtainWrite(&cm_volumeLock);
782 cm_AdjustVolumeLRU(volp);
783 lock_ReleaseWrite(&cm_volumeLock);
786 lock_ObtainRead(&cm_volumeLock);
788 lock_ReleaseRead(&cm_volumeLock);
793 /* otherwise, we didn't find it so consult the VLDB */
794 sprintf(volNameString, "%u", volumeID);
795 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
796 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
798 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
799 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
800 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
803 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
804 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
811 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
812 struct cm_user *userp, struct cm_req *reqp,
813 afs_uint32 flags, cm_volume_t **outVolpp)
816 #ifdef SEARCH_ALL_VOLUMES
820 char name[VL_MAXNAMELEN];
825 strncpy(name, volumeNamep, VL_MAXNAMELEN);
826 name[VL_MAXNAMELEN-1] = '\0';
829 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
831 name[len - 7] = '\0';
832 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
834 name[len - 9] = '\0';
839 lock_ObtainRead(&cm_volumeLock);
840 #ifdef SEARCH_ALL_VOLUMES
841 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
842 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
847 #endif /* SEARCH_ALL_VOLUMES */
849 hash = CM_VOLUME_NAME_HASH(name);
850 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
851 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
855 #ifdef SEARCH_ALL_VOLUMES
856 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
859 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
861 /* otherwise, get from VLDB */
864 * Change to a write lock so that we have exclusive use of
865 * the first cm_volume_t with a refCount of 0 so that we
866 * have time to increment it.
868 lock_ConvertRToW(&cm_volumeLock);
870 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
871 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
872 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
873 if ( volp->refCount == 0 ) {
874 /* There is one we can re-use */
879 for ( volp = cm_data.volumeLRULastp;
881 volp = (cm_volume_t *) osi_QPrev(&volp->q))
883 if ( volp->refCount == 0 ) {
884 /* There is one we can re-use */
890 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
892 InterlockedIncrement(&volp->refCount);
893 lock_ReleaseWrite(&cm_volumeLock);
894 lock_ObtainWrite(&volp->rw);
895 lock_ObtainWrite(&cm_volumeLock);
897 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
898 volp->cellp->name, volp->namep);
900 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
901 cm_RemoveVolumeFromLRU(volp);
902 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
903 cm_RemoveVolumeFromNameHashTable(volp);
905 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
906 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
907 cm_RemoveVolumeFromIDHashTable(volp, volType);
908 if (volp->vol[volType].ID)
909 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
910 volp->vol[volType].ID = 0;
911 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
912 lock_ReleaseWrite(&cm_volumeLock);
913 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
914 lock_ObtainWrite(&cm_volumeLock);
917 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
918 memset(volp, 0, sizeof(cm_volume_t));
919 volp->magic = CM_VOLUME_MAGIC;
920 volp->allNextp = cm_data.allVolumesp;
921 cm_data.allVolumesp = volp;
922 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
923 lock_ReleaseWrite(&cm_volumeLock);
924 lock_ObtainWrite(&volp->rw);
925 lock_ObtainWrite(&cm_volumeLock);
926 volp->refCount = 1; /* starts off held */
929 strncpy(volp->namep, name, VL_MAXNAMELEN);
930 volp->namep[VL_MAXNAMELEN-1] = '\0';
931 volp->flags = CM_VOLUMEFLAG_RESET;
933 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
934 volp->vol[volType].state = vl_unknown;
935 volp->vol[volType].nextp = NULL;
936 volp->vol[volType].flags = 0;
938 volp->cbExpiresRO = 0;
939 volp->cbServerpRO = NULL;
940 cm_AddVolumeToNameHashTable(volp);
941 lock_ReleaseWrite(&cm_volumeLock);
946 lock_ReleaseRead(&cm_volumeLock);
949 return CM_ERROR_NOSUCHVOLUME;
951 lock_ObtainWrite(&volp->rw);
954 /* if we get here we are holding the mutex */
955 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
956 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
958 lock_ReleaseWrite(&volp->rw);
960 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
961 type == ROVOL && volp->vol[ROVOL].ID == 0))
962 code = CM_ERROR_NOSUCHVOLUME;
967 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
968 lock_ObtainWrite(&cm_volumeLock);
969 cm_AdjustVolumeLRU(volp);
970 lock_ReleaseWrite(&cm_volumeLock);
973 lock_ObtainRead(&cm_volumeLock);
975 lock_ReleaseRead(&cm_volumeLock);
978 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
979 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
980 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
983 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
984 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
991 * Only call this function in response to a VNOVOL or VMOVED error
992 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
993 * as that can lead to recursive calls.
995 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
999 #ifdef SEARCH_ALL_VOLUMES
1006 return CM_ERROR_INVAL;
1008 cellp = cm_FindCellByID(fidp->cell, 0);
1010 return CM_ERROR_NOSUCHCELL;
1012 /* search for the volume */
1013 lock_ObtainRead(&cm_volumeLock);
1014 #ifdef SEARCH_ALL_VOLUMES
1015 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1016 if (cellp == volp->cellp &&
1017 (fidp->volume == volp->vol[RWVOL].ID ||
1018 fidp->volume == volp->vol[ROVOL].ID ||
1019 fidp->volume == volp->vol[BACKVOL].ID))
1022 #endif /* SEARCH_ALL_VOLUMES */
1024 hash = CM_VOLUME_ID_HASH(fidp->volume);
1025 /* The volumeID can be any one of the three types. So we must
1026 * search the hash table for all three types until we find it.
1027 * We will search in the order of RO, RW, BK.
1029 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1030 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1034 /* try RW volumes */
1035 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1036 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1041 /* try BK volumes */
1042 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1043 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1048 #ifdef SEARCH_ALL_VOLUMES
1049 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1051 /* hold the volume if we found it */
1055 lock_ReleaseRead(&cm_volumeLock);
1058 return CM_ERROR_NOSUCHVOLUME;
1061 cm_data.mountRootGen = time(NULL);
1062 lock_ObtainWrite(&volp->rw);
1063 volp->flags |= CM_VOLUMEFLAG_RESET;
1065 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1066 lock_ReleaseWrite(&volp->rw);
1068 lock_ObtainRead(&cm_volumeLock);
1070 lock_ReleaseRead(&cm_volumeLock);
1075 /* find the appropriate servers from a volume */
1076 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1078 cm_serverRef_t **serverspp;
1079 cm_serverRef_t *current;
1083 lock_ObtainWrite(&cm_serverLock);
1085 if (volume == volp->vol[RWVOL].ID)
1086 serverspp = &volp->vol[RWVOL].serversp;
1087 else if (volume == volp->vol[ROVOL].ID)
1088 serverspp = &volp->vol[ROVOL].serversp;
1089 else if (volume == volp->vol[BACKVOL].ID)
1090 serverspp = &volp->vol[BACKVOL].serversp;
1092 lock_ReleaseWrite(&cm_serverLock);
1096 lock_ObtainWrite(&volp->rw);
1097 volp->flags |= CM_VOLUMEFLAG_RESET;
1098 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1099 lock_ReleaseWrite(&volp->rw);
1107 * Increment the refCount on deleted items as well.
1108 * They will be freed by cm_FreeServerList when they get to zero
1110 for (current = *serverspp; current; current = current->next)
1111 current->refCount++;
1113 lock_ReleaseWrite(&cm_serverLock);
1118 void cm_PutVolume(cm_volume_t *volp)
1120 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1121 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1124 /* return the read-only volume, if there is one, or the read-write volume if
1127 long cm_GetROVolumeID(cm_volume_t *volp)
1131 lock_ObtainRead(&volp->rw);
1132 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1133 id = volp->vol[ROVOL].ID;
1135 id = volp->vol[RWVOL].ID;
1136 lock_ReleaseRead(&volp->rw);
1141 void cm_RefreshVolumes(void)
1147 cm_data.mountRootGen = time(NULL);
1149 /* force a re-loading of volume data from the vldb */
1150 lock_ObtainRead(&cm_volumeLock);
1151 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1152 InterlockedIncrement(&volp->refCount);
1153 lock_ReleaseRead(&cm_volumeLock);
1155 lock_ObtainWrite(&volp->rw);
1156 volp->flags |= CM_VOLUMEFLAG_RESET;
1157 lock_ReleaseWrite(&volp->rw);
1159 lock_ObtainRead(&cm_volumeLock);
1160 refCount = InterlockedDecrement(&volp->refCount);
1161 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1163 lock_ReleaseRead(&cm_volumeLock);
1165 /* force mount points to be re-evaluated so that
1166 * if the volume location has changed we will pick
1169 for ( scp = cm_data.scacheLRUFirstp;
1171 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1172 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1173 #ifdef AFS_FREELANCE_CLIENT
1174 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1177 lock_ObtainWrite(&scp->rw);
1178 scp->mountPointStringp[0] = '\0';
1179 lock_ReleaseWrite(&scp->rw);
1186 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1187 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1191 AFSFetchVolumeStatus volStat;
1196 struct rx_connection * rxconnp;
1198 char offLineMsg[256];
1200 long alldown, alldeleted;
1201 cm_serverRef_t *serversp;
1204 OfflineMsg = offLineMsg;
1207 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1208 if (!statep->serversp && !(*volumeUpdatedp)) {
1210 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1211 *volumeUpdatedp = 1;
1214 if (statep->serversp) {
1217 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1218 if (serversp->status == srv_deleted)
1225 if (serversp->status == srv_busy || serversp->status == srv_offline)
1226 serversp->status = srv_not_busy;
1229 if (alldeleted && !(*volumeUpdatedp)) {
1231 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1232 *volumeUpdatedp = 1;
1235 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1236 (!alldown && statep->state == vl_alldown)) {
1239 lock_ReleaseWrite(&volp->rw);
1241 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1245 rxconnp = cm_GetRxConn(connp);
1246 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1247 &volStat, &Name, &OfflineMsg, &MOTD);
1248 rx_PutConnection(rxconnp);
1250 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1251 code = cm_MapRPCError(code, &req);
1253 lock_ObtainWrite(&volp->rw);
1254 if (code == 0 && volStat.Online) {
1255 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1256 statep->state = vl_online;
1258 } else if (code == CM_ERROR_NOACCESS) {
1259 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1260 statep->state = vl_unknown;
1263 } else if (alldown && statep->state != vl_alldown) {
1264 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1265 statep->state = vl_alldown;
1267 } else if (statep->state != vl_alldown) {
1268 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1269 statep->state = vl_alldown;
1274 /* The return code is 0 if the volume is not online and
1275 * 1 if the volume is online
1278 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1282 afs_uint32 online = 0;
1283 afs_uint32 volumeUpdated = 0;
1285 lock_ObtainWrite(&volp->rw);
1287 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1289 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1293 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1294 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1295 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1297 lock_ReleaseWrite(&volp->rw);
1303 * called from the Daemon thread.
1304 * when checking the offline status, check those of the most recently used volumes first.
1306 void cm_CheckOfflineVolumes(void)
1310 extern int daemon_ShutdownFlag;
1311 extern int powerStateSuspended;
1313 lock_ObtainRead(&cm_volumeLock);
1314 for (volp = cm_data.volumeLRULastp;
1315 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1316 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1317 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1318 InterlockedIncrement(&volp->refCount);
1319 lock_ReleaseRead(&cm_volumeLock);
1320 cm_CheckOfflineVolume(volp, 0);
1321 lock_ObtainRead(&cm_volumeLock);
1322 refCount = InterlockedDecrement(&volp->refCount);
1323 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1326 lock_ReleaseRead(&cm_volumeLock);
1331 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1333 enum volstatus newStatus;
1334 cm_serverRef_t *tsrp;
1336 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1339 if (!volp || !statep) {
1346 lock_ObtainWrite(&cm_serverLock);
1347 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1349 sprintf(addr, "%d.%d.%d.%d",
1350 ((tsp->addr.sin_addr.s_addr & 0xff)),
1351 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1352 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1353 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1355 if (tsrp->status == srv_deleted) {
1356 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1357 statep->ID, osi_LogSaveString(afsd_logp,addr));
1361 cm_GetServerNoLock(tsp);
1362 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1364 if (tsrp->status == srv_busy) {
1365 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1366 statep->ID, osi_LogSaveString(afsd_logp,addr));
1369 } else if (tsrp->status == srv_offline) {
1370 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1371 statep->ID, osi_LogSaveString(afsd_logp,addr));
1375 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1376 statep->ID, osi_LogSaveString(afsd_logp,addr));
1381 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1382 statep->ID, osi_LogSaveString(afsd_logp,addr));
1384 cm_PutServerNoLock(tsp);
1387 lock_ReleaseWrite(&cm_serverLock);
1389 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1390 allDown, allBusy, someBusy, someOffline, allOffline);
1393 newStatus = vl_alldown;
1394 else if (allBusy || (someBusy && someOffline))
1395 newStatus = vl_busy;
1396 else if (allOffline)
1397 newStatus = vl_offline;
1399 newStatus = vl_online;
1401 if (statep->ID && statep->state != newStatus)
1402 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1404 statep->state = newStatus;
1408 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1411 if (volp->vol[RWVOL].ID == volID) {
1412 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1413 } else if (volp->vol[ROVOL].ID == volID) {
1414 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1415 } else if (volp->vol[BACKVOL].ID == volID) {
1416 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1419 * If we are called with volID == 0 then something has gone wrong.
1420 * Most likely a race occurred in the server volume list maintenance.
1421 * Since we don't know which volume's status should be updated,
1422 * just update all of them that are known to exist. Better to be
1423 * correct than fast.
1426 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1427 if (volp->vol[volType].ID != 0)
1428 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1434 ** Finds all volumes that reside on this server and reorders their
1435 ** RO list according to the changed rank of server.
1437 void cm_ChangeRankVolume(cm_server_t *tsp)
1443 /* find volumes which might have RO copy on server*/
1444 lock_ObtainRead(&cm_volumeLock);
1445 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1447 code = 1 ; /* assume that list is unchanged */
1448 InterlockedIncrement(&volp->refCount);
1449 lock_ReleaseRead(&cm_volumeLock);
1450 lock_ObtainWrite(&volp->rw);
1452 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1453 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1455 /* this volume list was changed */
1457 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1459 lock_ReleaseWrite(&volp->rw);
1460 lock_ObtainRead(&cm_volumeLock);
1461 refCount = InterlockedDecrement(&volp->refCount);
1462 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1464 lock_ReleaseRead(&cm_volumeLock);
1467 /* dump all volumes that have reference count > 0 to a file.
1468 * cookie is used to identify this batch for easy parsing,
1469 * and it a string provided by a caller
1471 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1478 lock_ObtainRead(&cm_scacheLock);
1479 lock_ObtainRead(&cm_volumeLock);
1482 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1483 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1485 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1487 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1488 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1490 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1492 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1493 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1496 lock_ReleaseRead(&cm_volumeLock);
1497 lock_ReleaseRead(&cm_scacheLock);
1504 * String hash function used by SDBM project.
1505 * It was chosen because it is fast and provides
1508 afs_uint32 SDBMHash(const char * str)
1510 afs_uint32 hash = 0;
1516 for(i = 0, len = strlen(str); i < len; i++)
1518 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1521 return (hash & 0x7FFFFFFF);
1524 /* call with volume write-locked and mutex held */
1525 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1529 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1532 i = CM_VOLUME_NAME_HASH(volp->namep);
1534 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1535 cm_data.volumeNameHashTablep[i] = volp;
1536 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1539 /* call with volume write-locked and mutex held */
1540 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1542 cm_volume_t **lvolpp;
1546 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1547 /* hash it out first */
1548 i = CM_VOLUME_NAME_HASH(volp->namep);
1549 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1551 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1552 if (tvolp == volp) {
1553 *lvolpp = volp->nameNextp;
1554 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1555 volp->nameNextp = NULL;
1562 /* call with volume write-locked and mutex held */
1563 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1566 struct cm_vol_state * statep;
1568 statep = cm_VolumeStateByType(volp, volType);
1570 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1573 i = CM_VOLUME_ID_HASH(statep->ID);
1577 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1578 cm_data.volumeRWIDHashTablep[i] = volp;
1581 statep->nextp = cm_data.volumeROIDHashTablep[i];
1582 cm_data.volumeROIDHashTablep[i] = volp;
1585 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1586 cm_data.volumeBKIDHashTablep[i] = volp;
1589 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1593 /* call with volume write-locked and mutex held */
1594 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1596 cm_volume_t **lvolpp;
1598 struct cm_vol_state * statep;
1601 statep = cm_VolumeStateByType(volp, volType);
1603 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1604 /* hash it out first */
1605 i = CM_VOLUME_ID_HASH(statep->ID);
1609 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1610 tvolp = cm_data.volumeRWIDHashTablep[i];
1613 lvolpp = &cm_data.volumeROIDHashTablep[i];
1614 tvolp = cm_data.volumeROIDHashTablep[i];
1617 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1618 tvolp = cm_data.volumeBKIDHashTablep[i];
1621 osi_assertx(0, "invalid volume type");
1624 if (tvolp == volp) {
1625 *lvolpp = statep->nextp;
1626 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1627 statep->nextp = NULL;
1631 lvolpp = &tvolp->vol[volType].nextp;
1632 tvolp = tvolp->vol[volType].nextp;
1637 /* must be called with cm_volumeLock write-locked! */
1638 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1640 if (volp == cm_data.volumeLRULastp)
1641 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1642 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1643 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1644 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1645 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1646 if (!cm_data.volumeLRULastp)
1647 cm_data.volumeLRULastp = volp;
1650 /* must be called with cm_volumeLock write-locked! */
1651 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1653 if (volp == cm_data.volumeLRULastp)
1656 if (volp == cm_data.volumeLRUFirstp)
1657 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1658 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1659 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1660 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1661 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1662 if (!cm_data.volumeLRULastp)
1663 cm_data.volumeLRULastp = volp;
1666 /* must be called with cm_volumeLock write-locked! */
1667 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1669 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1670 if (volp == cm_data.volumeLRULastp)
1671 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1672 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1673 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1677 static char * volstatus_str(enum volstatus vs)
1693 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1695 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1698 if (volID == volp->vol[RWVOL].ID)
1700 else if (volID == volp->vol[ROVOL].ID)
1702 else if (volID == volp->vol[BACKVOL].ID)
1706 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1708 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1709 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1711 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1714 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1716 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1718 return statep->state;
1723 /* Renew .readonly volume callbacks that are more than
1724 * 30 minutes old. (A volume callback is issued for 2 hours.)
1727 cm_VolumeRenewROCallbacks(void)
1730 time_t minexp = time(NULL) + 90 * 60;
1731 extern int daemon_ShutdownFlag;
1732 extern int powerStateSuspended;
1734 lock_ObtainRead(&cm_volumeLock);
1735 for (volp = cm_data.allVolumesp;
1736 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1737 volp=volp->allNextp) {
1738 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1743 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1747 lock_ReleaseRead(&cm_volumeLock);
1748 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1749 lock_ObtainWrite(&scp->rw);
1750 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1751 lock_ReleaseWrite(&scp->rw);
1752 cm_ReleaseSCache(scp);
1754 lock_ObtainRead(&cm_volumeLock);
1757 lock_ReleaseRead(&cm_volumeLock);
1761 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1763 return &volp->vol[volType];
1767 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1769 cm_vol_state_t * statep = NULL;
1771 if (id == volp->vol[RWVOL].ID)
1772 statep = &volp->vol[RWVOL];
1773 else if (id == volp->vol[ROVOL].ID)
1774 statep = &volp->vol[ROVOL];
1775 else if (id == volp->vol[BACKVOL].ID)
1776 statep = &volp->vol[BACKVOL];
1782 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1784 size_t len = strlen(volname);
1785 cm_vol_state_t *statep;
1787 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1788 statep = &volp->vol[ROVOL];
1789 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1790 statep = &volp->vol[BACKVOL];
1792 statep = &volp->vol[RWVOL];
1798 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1800 if (id == volp->vol[RWVOL].ID)
1802 else if (id == volp->vol[ROVOL].ID)
1804 else if (id == volp->vol[BACKVOL].ID)