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 lock_FinalizeRWLock(&volp->rw);
81 void cm_InitVolume(int newFile, long maxVols)
83 static osi_once_t once;
85 if (osi_Once(&once)) {
86 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
89 cm_data.allVolumesp = NULL;
90 cm_data.currentVolumes = 0;
91 cm_data.maxVolumes = maxVols;
92 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
93 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
94 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
95 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
96 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
100 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
103 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
104 volp->flags |= CM_VOLUMEFLAG_RESET;
105 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
106 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
107 volp->vol[volType].state = vl_unknown;
108 volp->vol[volType].serversp = NULL;
109 if (volp->vol[volType].ID)
110 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
112 volp->cbExpiresRO = 0;
120 /* returns true if the id is a decimal integer, in which case we interpret it
121 * as an id. make the cache manager much simpler.
122 * Stolen from src/volser/vlprocs.c */
124 cm_VolNameIsID(char *aname)
127 while (tc = *aname++) {
128 if (tc > '9' || tc < '0')
136 * Update a volume. Caller holds a write lock on the volume (volp->rw).
139 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
140 * Yes, we support multihomed fileservers.
141 * Since before we got the code from IBM.
142 * But to find out about multiple addresses on a multihomed server, you need
143 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
144 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
145 * address per server.
146 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
147 * see src/afs/afs_volume.c, paying particular attention to
148 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
149 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
150 * thanks. The windows client calls the 0 versions.
151 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
153 * By not using the N versions, you only get up to 8 sites instead of 13.
154 * By not using the U versions, you don't get to know about multihomed serve
155 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
156 * Of course, you probably want to support the older versions for backward
157 * compatibility. If you do that, you need to call the newest interface
158 * first, and fall back to successively older versions if you get
162 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
167 cm_serverRef_t *tsrp;
169 struct sockaddr_in tsockAddr;
172 struct vldbentry vldbEntry;
173 struct nvldbentry nvldbEntry;
175 struct uvldbentry uvldbEntry;
180 enum volstatus rwNewstate = vl_online;
181 enum volstatus roNewstate = vl_online;
182 enum volstatus bkNewstate = vl_online;
183 #ifdef AFS_FREELANCE_CLIENT
188 lock_AssertWrite(&volp->rw);
190 #ifdef AFS_FREELANCE_CLIENT
191 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
194 memset(&vldbEntry, 0, sizeof(vldbEntry));
195 vldbEntry.flags |= VLF_RWEXISTS;
196 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
202 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
203 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
204 volp->cellp->name, volp->namep, volp->flags);
205 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
206 lock_ObtainWrite(&volp->rw);
207 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
208 volp->cellp->name, volp->namep, volp->flags);
209 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
210 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
211 volp->cellp->name, volp->namep, volp->flags);
212 osi_Wakeup((LONG_PTR) &volp->flags);
217 /* clear out old bindings */
218 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
219 if (volp->vol[volType].serversp)
220 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
223 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
224 lock_ReleaseWrite(&volp->rw);
226 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
227 cm_UpdateCell(cellp, 0);
229 /* now we have volume structure locked and held; make RPC to fill it */
230 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
231 osi_LogSaveString(afsd_logp,volp->cellp->name),
232 osi_LogSaveString(afsd_logp,volp->namep));
234 struct rx_connection * rxconnp;
236 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
240 rxconnp = cm_GetRxConn(connp);
242 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
244 if ( code == RXGEN_OPCODE )
247 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
250 if ( code == RXGEN_OPCODE ) {
251 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
254 rx_PutConnection(rxconnp);
255 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
256 code = cm_MapVLRPCError(code, reqp);
258 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
259 osi_LogSaveString(afsd_logp,volp->cellp->name),
260 osi_LogSaveString(afsd_logp,volp->namep), code);
262 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
263 osi_LogSaveString(afsd_logp,volp->cellp->name),
264 osi_LogSaveString(afsd_logp,volp->namep));
267 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
268 * does not exist but there might exist a .readonly volume. If the base name
269 * doesn't exist we will not care about the .backup that might be left behind
270 * since there should be no method to access it.
272 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && 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 afs_int32 rwServers_alldown = 1;
325 afs_int32 roServers_alldown = 1;
326 afs_int32 bkServers_alldown = 1;
327 char name[VL_MAXNAMELEN];
329 #ifdef AFS_FREELANCE_CLIENT
331 rwServers_alldown = 0;
336 flags = vldbEntry.flags;
337 nServers = vldbEntry.nServers;
338 rwID = vldbEntry.volumeId[0];
339 roID = vldbEntry.volumeId[1];
340 bkID = vldbEntry.volumeId[2];
341 for ( i=0; i<nServers; i++ ) {
342 serverFlags[i] = vldbEntry.serverFlags[i];
343 serverNumber[i] = vldbEntry.serverNumber[i];
345 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
346 name[VL_MAXNAMELEN - 1] = '\0';
349 flags = nvldbEntry.flags;
350 nServers = nvldbEntry.nServers;
351 rwID = nvldbEntry.volumeId[0];
352 roID = nvldbEntry.volumeId[1];
353 bkID = nvldbEntry.volumeId[2];
354 for ( i=0; i<nServers; i++ ) {
355 serverFlags[i] = nvldbEntry.serverFlags[i];
356 serverNumber[i] = nvldbEntry.serverNumber[i];
358 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
359 name[VL_MAXNAMELEN - 1] = '\0';
363 flags = uvldbEntry.flags;
364 nServers = uvldbEntry.nServers;
365 rwID = uvldbEntry.volumeId[0];
366 roID = uvldbEntry.volumeId[1];
367 bkID = uvldbEntry.volumeId[2];
368 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
369 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
370 serverFlags[j] = uvldbEntry.serverFlags[i];
371 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
374 afs_uint32 * addrp, nentries, code, unique;
376 ListAddrByAttributes attrs;
379 memset((char *)&attrs, 0, sizeof(attrs));
380 attrs.Mask = VLADDR_UUID;
381 attrs.uuid = uvldbEntry.serverNumber[i];
382 memset((char *)&uuid, 0, sizeof(uuid));
383 memset((char *)&addrs, 0, sizeof(addrs));
386 struct rx_connection *rxconnp;
388 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
392 rxconnp = cm_GetRxConn(connp);
393 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
394 rx_PutConnection(rxconnp);
395 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
398 code = cm_MapVLRPCError(code, reqp);
399 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
403 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
405 addrp = addrs.bulkaddrs_val;
406 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
407 serverFlags[j] = uvldbEntry.serverFlags[i];
408 serverNumber[j] = addrp[k];
411 free(addrs.bulkaddrs_val); /* This is wrong */
414 code = CM_ERROR_INVAL;
417 nServers = j; /* update the server count */
418 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
419 name[VL_MAXNAMELEN - 1] = '\0';
424 /* decode the response */
425 lock_ObtainWrite(&cm_volumeLock);
426 if (cm_VolNameIsID(volp->namep)) {
431 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
432 name[len - 7] = '\0';
433 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
434 name[len - 9] = '\0';
437 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
438 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
440 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
441 cm_RemoveVolumeFromNameHashTable(volp);
443 strcpy(volp->namep, name);
445 cm_AddVolumeToNameHashTable(volp);
448 if (flags & VLF_RWEXISTS) {
449 if (volp->vol[RWVOL].ID != rwID) {
450 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
451 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
452 volp->vol[RWVOL].ID = rwID;
453 cm_AddVolumeToIDHashTable(volp, RWVOL);
456 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
457 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
458 volp->vol[RWVOL].ID = 0;
460 if (flags & VLF_ROEXISTS) {
461 if (volp->vol[ROVOL].ID != roID) {
462 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
463 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
464 volp->vol[ROVOL].ID = roID;
465 cm_AddVolumeToIDHashTable(volp, ROVOL);
468 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
469 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
470 volp->vol[ROVOL].ID = 0;
472 if (flags & VLF_BACKEXISTS) {
473 if (volp->vol[BACKVOL].ID != bkID) {
474 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
475 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
476 volp->vol[BACKVOL].ID = bkID;
477 cm_AddVolumeToIDHashTable(volp, BACKVOL);
480 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
481 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
482 volp->vol[BACKVOL].ID = 0;
484 lock_ReleaseWrite(&cm_volumeLock);
485 for (i=0; i<nServers; i++) {
486 /* create a server entry */
487 tflags = serverFlags[i];
488 if (tflags & VLSF_DONTUSE)
490 tsockAddr.sin_family = AF_INET;
491 tempAddr = htonl(serverNumber[i]);
492 tsockAddr.sin_addr.s_addr = tempAddr;
493 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
495 /* cm_NewServer will probe the server which in turn will
496 * update the state on the volume group object */
497 lock_ReleaseWrite(&volp->rw);
498 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, 0);
499 lock_ObtainWrite(&volp->rw);
501 /* if this server was created by fs setserverprefs */
505 osi_assertx(tsp != NULL, "null cm_server_t");
507 /* and add it to the list(s). */
509 * Each call to cm_NewServerRef() increments the
510 * ref count of tsp. These reference will be dropped,
511 * if and when the volume is reset; see reset code
512 * earlier in this function.
514 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
515 tsrp = cm_NewServerRef(tsp, rwID);
516 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
518 lock_ObtainWrite(&cm_serverLock);
519 tsrp->refCount--; /* drop allocation reference */
520 lock_ReleaseWrite(&cm_serverLock);
522 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
523 rwServers_alldown = 0;
525 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
526 tsrp = cm_NewServerRef(tsp, roID);
527 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
528 lock_ObtainWrite(&cm_serverLock);
529 tsrp->refCount--; /* drop allocation reference */
530 lock_ReleaseWrite(&cm_serverLock);
533 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
534 roServers_alldown = 0;
536 /* We don't use VLSF_BACKVOL !?! */
537 /* Because only the backup on the server holding the RW
538 * volume can be valid. This check prevents errors if a
539 * RW is moved but the old backup is not removed.
541 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
542 tsrp = cm_NewServerRef(tsp, bkID);
543 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
544 lock_ObtainWrite(&cm_serverLock);
545 tsrp->refCount--; /* drop allocation reference */
546 lock_ReleaseWrite(&cm_serverLock);
548 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
549 bkServers_alldown = 0;
551 /* Drop the reference obtained by cm_FindServer() */
558 * If the first n servers have the same ipRank, then we
559 * randomly pick one among them and move it to the beginning.
560 * We don't bother to re-order the whole list because
561 * the rest of the list is used only if the first server is
562 * down. We only do this for the RO list; we assume the other
563 * lists are length 1.
566 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
570 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
571 roNewstate = roServers_alldown ? vl_alldown : vl_online;
572 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
573 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
574 /* this volume does not exist - we should discard it */
575 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
576 cm_RemoveVolumeFromNameHashTable(volp);
577 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
578 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
579 cm_RemoveVolumeFromIDHashTable(volp, volType);
580 if (volp->vol[volType].ID) {
581 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
582 volp->vol[volType].ID = 0;
584 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
587 /* Move to the end so it will be recycled first */
588 cm_MoveVolumeToLRULast(volp);
590 volp->namep[0] ='\0';
592 rwNewstate = roNewstate = bkNewstate = vl_alldown;
595 if (volp->vol[RWVOL].state != rwNewstate) {
596 if (volp->vol[RWVOL].ID)
597 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
598 volp->vol[RWVOL].state = rwNewstate;
600 if (volp->vol[ROVOL].state != roNewstate) {
601 if (volp->vol[ROVOL].ID)
602 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
603 volp->vol[ROVOL].state = roNewstate;
605 if (volp->vol[BACKVOL].state != bkNewstate) {
606 if (volp->vol[BACKVOL].ID)
607 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
608 volp->vol[BACKVOL].state = bkNewstate;
612 volp->flags &= ~CM_VOLUMEFLAG_RESET;
614 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
615 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
616 osi_LogSaveString(afsd_logp,volp->cellp->name),
617 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
618 osi_Wakeup((LONG_PTR) &volp->flags);
623 /* Requires read or write lock on cm_volumeLock */
624 void cm_GetVolume(cm_volume_t *volp)
626 InterlockedIncrement(&volp->refCount);
629 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
634 lock_ObtainRead(&cm_volumeLock);
635 hash = CM_VOLUME_ID_HASH(fidp->volume);
636 /* The volumeID can be any one of the three types. So we must
637 * search the hash table for all three types until we find it.
638 * We will search in the order of RO, RW, BK.
640 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
641 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
646 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
647 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
653 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
654 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
659 /* hold the volume if we found it */
663 lock_ReleaseRead(&cm_volumeLock);
667 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
668 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
671 #ifdef SEARCH_ALL_VOLUMES
674 char volNameString[VL_MAXNAMELEN];
678 lock_ObtainRead(&cm_volumeLock);
679 #ifdef SEARCH_ALL_VOLUMES
680 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
681 if (cellp == volp->cellp &&
682 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
683 (unsigned) volumeID == volp->vol[ROVOL].ID ||
684 (unsigned) volumeID == volp->vol[BACKVOL].ID))
689 #endif /* SEARCH_ALL_VOLUMES */
691 hash = CM_VOLUME_ID_HASH(volumeID);
692 /* The volumeID can be any one of the three types. So we must
693 * search the hash table for all three types until we find it.
694 * We will search in the order of RO, RW, BK.
696 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
697 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
702 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
703 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
709 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
710 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
715 #ifdef SEARCH_ALL_VOLUMES
716 osi_assertx(volp == volp2, "unexpected cm_vol_t");
719 /* hold the volume if we found it */
723 lock_ReleaseRead(&cm_volumeLock);
727 lock_ObtainWrite(&volp->rw);
730 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
731 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
733 lock_ReleaseWrite(&volp->rw);
737 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
738 lock_ObtainWrite(&cm_volumeLock);
739 cm_AdjustVolumeLRU(volp);
740 lock_ReleaseWrite(&cm_volumeLock);
743 lock_ObtainRead(&cm_volumeLock);
745 lock_ReleaseRead(&cm_volumeLock);
750 /* otherwise, we didn't find it so consult the VLDB */
751 sprintf(volNameString, "%u", volumeID);
752 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
753 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
755 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
756 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
757 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
760 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp, flags, outVolpp);
766 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
767 struct cm_user *userp, struct cm_req *reqp,
768 afs_uint32 flags, cm_volume_t **outVolpp)
771 #ifdef SEARCH_ALL_VOLUMES
775 char name[VL_MAXNAMELEN];
780 strncpy(name, volumeNamep, VL_MAXNAMELEN);
781 name[VL_MAXNAMELEN-1] = '\0';
784 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
786 name[len - 7] = '\0';
787 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
789 name[len - 9] = '\0';
794 lock_ObtainRead(&cm_volumeLock);
795 #ifdef SEARCH_ALL_VOLUMES
796 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
797 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
802 #endif /* SEARCH_ALL_VOLUMES */
804 hash = CM_VOLUME_NAME_HASH(name);
805 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
806 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
810 #ifdef SEARCH_ALL_VOLUMES
811 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
814 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
816 /* otherwise, get from VLDB */
819 * Change to a write lock so that we have exclusive use of
820 * the first cm_volume_t with a refCount of 0 so that we
821 * have time to increment it.
823 lock_ConvertRToW(&cm_volumeLock);
825 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
826 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
827 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
828 if ( volp->refCount == 0 ) {
829 /* There is one we can re-use */
834 for ( volp = cm_data.volumeLRULastp;
836 volp = (cm_volume_t *) osi_QPrev(&volp->q))
838 if ( volp->refCount == 0 ) {
839 /* There is one we can re-use */
845 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
847 InterlockedIncrement(&volp->refCount);
848 lock_ReleaseWrite(&cm_volumeLock);
849 lock_ObtainWrite(&volp->rw);
850 lock_ObtainWrite(&cm_volumeLock);
852 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
853 volp->cellp->name, volp->namep);
855 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
856 cm_RemoveVolumeFromLRU(volp);
857 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
858 cm_RemoveVolumeFromNameHashTable(volp);
860 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
861 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
862 cm_RemoveVolumeFromIDHashTable(volp, volType);
863 if (volp->vol[volType].ID)
864 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
865 volp->vol[volType].ID = 0;
866 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
867 lock_ReleaseWrite(&cm_volumeLock);
868 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
869 lock_ObtainWrite(&cm_volumeLock);
872 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
873 memset(volp, 0, sizeof(cm_volume_t));
874 volp->magic = CM_VOLUME_MAGIC;
875 volp->allNextp = cm_data.allVolumesp;
876 cm_data.allVolumesp = volp;
877 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
878 lock_ReleaseWrite(&cm_volumeLock);
879 lock_ObtainWrite(&volp->rw);
880 lock_ObtainWrite(&cm_volumeLock);
881 volp->refCount = 1; /* starts off held */
884 strncpy(volp->namep, name, VL_MAXNAMELEN);
885 volp->namep[VL_MAXNAMELEN-1] = '\0';
886 volp->flags = CM_VOLUMEFLAG_RESET;
888 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
889 volp->vol[volType].state = vl_unknown;
890 volp->vol[volType].nextp = NULL;
891 volp->vol[volType].flags = 0;
893 volp->cbExpiresRO = 0;
894 cm_AddVolumeToNameHashTable(volp);
895 lock_ReleaseWrite(&cm_volumeLock);
900 lock_ReleaseRead(&cm_volumeLock);
903 return CM_ERROR_NOSUCHVOLUME;
905 lock_ObtainWrite(&volp->rw);
908 /* if we get here we are holding the mutex */
909 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
910 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
912 lock_ReleaseWrite(&volp->rw);
914 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
915 type == ROVOL && volp->vol[ROVOL].ID == 0))
916 code = CM_ERROR_NOSUCHVOLUME;
921 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
922 lock_ObtainWrite(&cm_volumeLock);
923 cm_AdjustVolumeLRU(volp);
924 lock_ReleaseWrite(&cm_volumeLock);
927 lock_ObtainRead(&cm_volumeLock);
929 lock_ReleaseRead(&cm_volumeLock);
932 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
933 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
934 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
937 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp, flags, outVolpp);
943 * Only call this function in response to a VNOVOL or VMOVED error
944 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
945 * as that can lead to recursive calls.
947 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
951 #ifdef SEARCH_ALL_VOLUMES
958 return CM_ERROR_INVAL;
960 cellp = cm_FindCellByID(fidp->cell, 0);
962 return CM_ERROR_NOSUCHCELL;
964 /* search for the volume */
965 lock_ObtainRead(&cm_volumeLock);
966 #ifdef SEARCH_ALL_VOLUMES
967 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
968 if (cellp == volp->cellp &&
969 (fidp->volume == volp->vol[RWVOL].ID ||
970 fidp->volume == volp->vol[ROVOL].ID ||
971 fidp->volume == volp->vol[BACKVOL].ID))
974 #endif /* SEARCH_ALL_VOLUMES */
976 hash = CM_VOLUME_ID_HASH(fidp->volume);
977 /* The volumeID can be any one of the three types. So we must
978 * search the hash table for all three types until we find it.
979 * We will search in the order of RO, RW, BK.
981 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
982 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
987 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
988 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
994 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
995 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1000 #ifdef SEARCH_ALL_VOLUMES
1001 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1003 /* hold the volume if we found it */
1007 lock_ReleaseRead(&cm_volumeLock);
1010 return CM_ERROR_NOSUCHVOLUME;
1013 cm_data.mountRootGen = time(NULL);
1014 lock_ObtainWrite(&volp->rw);
1015 volp->flags |= CM_VOLUMEFLAG_RESET;
1017 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1018 lock_ReleaseWrite(&volp->rw);
1020 lock_ObtainRead(&cm_volumeLock);
1022 lock_ReleaseRead(&cm_volumeLock);
1027 /* find the appropriate servers from a volume */
1028 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1030 cm_serverRef_t **serverspp;
1031 cm_serverRef_t *current;
1035 lock_ObtainWrite(&cm_serverLock);
1037 if (volume == volp->vol[RWVOL].ID)
1038 serverspp = &volp->vol[RWVOL].serversp;
1039 else if (volume == volp->vol[ROVOL].ID)
1040 serverspp = &volp->vol[ROVOL].serversp;
1041 else if (volume == volp->vol[BACKVOL].ID)
1042 serverspp = &volp->vol[BACKVOL].serversp;
1044 lock_ReleaseWrite(&cm_serverLock);
1048 lock_ObtainWrite(&volp->rw);
1049 volp->flags |= CM_VOLUMEFLAG_RESET;
1050 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1051 lock_ReleaseWrite(&volp->rw);
1059 * Increment the refCount on deleted items as well.
1060 * They will be freed by cm_FreeServerList when they get to zero
1062 for (current = *serverspp; current; current = current->next)
1063 current->refCount++;
1065 lock_ReleaseWrite(&cm_serverLock);
1070 void cm_PutVolume(cm_volume_t *volp)
1072 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1073 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1076 /* return the read-only volume, if there is one, or the read-write volume if
1079 long cm_GetROVolumeID(cm_volume_t *volp)
1083 lock_ObtainRead(&volp->rw);
1084 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1085 id = volp->vol[ROVOL].ID;
1087 id = volp->vol[RWVOL].ID;
1088 lock_ReleaseRead(&volp->rw);
1093 void cm_RefreshVolumes(void)
1099 cm_data.mountRootGen = time(NULL);
1101 /* force a re-loading of volume data from the vldb */
1102 lock_ObtainRead(&cm_volumeLock);
1103 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1104 InterlockedIncrement(&volp->refCount);
1105 lock_ReleaseRead(&cm_volumeLock);
1107 lock_ObtainWrite(&volp->rw);
1108 volp->flags |= CM_VOLUMEFLAG_RESET;
1109 lock_ReleaseWrite(&volp->rw);
1111 lock_ObtainRead(&cm_volumeLock);
1112 refCount = InterlockedDecrement(&volp->refCount);
1113 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1115 lock_ReleaseRead(&cm_volumeLock);
1117 /* force mount points to be re-evaluated so that
1118 * if the volume location has changed we will pick
1121 for ( scp = cm_data.scacheLRUFirstp;
1123 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1124 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1125 #ifdef AFS_FREELANCE_CLIENT
1126 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1129 lock_ObtainWrite(&scp->rw);
1130 scp->mountPointStringp[0] = '\0';
1131 lock_ReleaseWrite(&scp->rw);
1138 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1139 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1143 AFSFetchVolumeStatus volStat;
1148 struct rx_connection * rxconnp;
1150 char offLineMsg[256];
1152 long alldown, alldeleted;
1153 cm_serverRef_t *serversp;
1156 OfflineMsg = offLineMsg;
1159 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1160 if (!statep->serversp && !(*volumeUpdatedp)) {
1162 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1163 *volumeUpdatedp = 1;
1166 if (statep->serversp) {
1169 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1170 if (serversp->status == srv_deleted)
1177 if (serversp->status == srv_busy || serversp->status == srv_offline)
1178 serversp->status = srv_not_busy;
1181 if (alldeleted && !(*volumeUpdatedp)) {
1183 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1184 *volumeUpdatedp = 1;
1187 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1188 (!alldown && statep->state == vl_alldown)) {
1191 lock_ReleaseWrite(&volp->rw);
1193 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1197 rxconnp = cm_GetRxConn(connp);
1198 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1199 &volStat, &Name, &OfflineMsg, &MOTD);
1200 rx_PutConnection(rxconnp);
1202 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1203 code = cm_MapRPCError(code, &req);
1205 lock_ObtainWrite(&volp->rw);
1206 if (code == 0 && volStat.Online) {
1207 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1208 statep->state = vl_online;
1210 } else if (code == CM_ERROR_NOACCESS) {
1211 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1212 statep->state = vl_unknown;
1215 } else if (alldown && statep->state != vl_alldown) {
1216 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1217 statep->state = vl_alldown;
1219 } else if (statep->state != vl_alldown) {
1220 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1221 statep->state = vl_alldown;
1226 /* The return code is 0 if the volume is not online and
1227 * 1 if the volume is online
1230 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1234 afs_uint32 online = 0;
1235 afs_uint32 volumeUpdated = 0;
1237 lock_ObtainWrite(&volp->rw);
1239 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1241 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1245 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1246 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1247 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1249 lock_ReleaseWrite(&volp->rw);
1254 /* called from the Daemon thread */
1255 void cm_CheckOfflineVolumes(void)
1260 lock_ObtainRead(&cm_volumeLock);
1261 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1262 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1263 InterlockedIncrement(&volp->refCount);
1264 lock_ReleaseRead(&cm_volumeLock);
1265 cm_CheckOfflineVolume(volp, 0);
1266 lock_ObtainRead(&cm_volumeLock);
1267 refCount = InterlockedDecrement(&volp->refCount);
1268 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1271 lock_ReleaseRead(&cm_volumeLock);
1276 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1278 enum volstatus newStatus;
1279 cm_serverRef_t *tsrp;
1281 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1283 if (!volp || !statep) {
1290 lock_ObtainWrite(&cm_serverLock);
1291 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1292 if (tsrp->status == srv_deleted)
1296 cm_GetServerNoLock(tsp);
1297 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1299 if (tsrp->status == srv_busy) {
1302 } else if (tsrp->status == srv_offline) {
1310 cm_PutServerNoLock(tsp);
1313 lock_ReleaseWrite(&cm_serverLock);
1316 newStatus = vl_alldown;
1317 else if (allBusy || (someBusy && someOffline))
1318 newStatus = vl_busy;
1319 else if (allOffline)
1320 newStatus = vl_offline;
1322 newStatus = vl_online;
1324 if (statep->ID && statep->state != newStatus)
1325 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1327 statep->state = newStatus;
1331 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1334 if (volp->vol[RWVOL].ID == volID) {
1335 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1336 } else if (volp->vol[ROVOL].ID == volID) {
1337 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1338 } else if (volp->vol[BACKVOL].ID == volID) {
1339 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1342 * If we are called with volID == 0 then something has gone wrong.
1343 * Most likely a race occurred in the server volume list maintenance.
1344 * Since we don't know which volume's status should be updated,
1345 * just update all of them that are known to exist. Better to be
1346 * correct than fast.
1349 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1350 if (volp->vol[volType].ID != 0)
1351 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1357 ** Finds all volumes that reside on this server and reorders their
1358 ** RO list according to the changed rank of server.
1360 void cm_ChangeRankVolume(cm_server_t *tsp)
1366 /* find volumes which might have RO copy on server*/
1367 lock_ObtainRead(&cm_volumeLock);
1368 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1370 code = 1 ; /* assume that list is unchanged */
1371 InterlockedIncrement(&volp->refCount);
1372 lock_ReleaseRead(&cm_volumeLock);
1373 lock_ObtainWrite(&volp->rw);
1375 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1376 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1378 /* this volume list was changed */
1380 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1382 lock_ReleaseWrite(&volp->rw);
1383 lock_ObtainRead(&cm_volumeLock);
1384 refCount = InterlockedDecrement(&volp->refCount);
1385 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1387 lock_ReleaseRead(&cm_volumeLock);
1390 /* dump all volumes that have reference count > 0 to a file.
1391 * cookie is used to identify this batch for easy parsing,
1392 * and it a string provided by a caller
1394 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1401 lock_ObtainRead(&cm_scacheLock);
1402 lock_ObtainRead(&cm_volumeLock);
1405 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1406 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1408 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1410 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1411 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1413 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1415 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1416 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1419 lock_ReleaseRead(&cm_volumeLock);
1420 lock_ReleaseRead(&cm_scacheLock);
1427 * String hash function used by SDBM project.
1428 * It was chosen because it is fast and provides
1431 afs_uint32 SDBMHash(const char * str)
1433 afs_uint32 hash = 0;
1439 for(i = 0, len = strlen(str); i < len; i++)
1441 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1444 return (hash & 0x7FFFFFFF);
1447 /* call with volume write-locked and mutex held */
1448 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1452 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1455 i = CM_VOLUME_NAME_HASH(volp->namep);
1457 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1458 cm_data.volumeNameHashTablep[i] = volp;
1459 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1462 /* call with volume write-locked and mutex held */
1463 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1465 cm_volume_t **lvolpp;
1469 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1470 /* hash it out first */
1471 i = CM_VOLUME_NAME_HASH(volp->namep);
1472 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1474 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1475 if (tvolp == volp) {
1476 *lvolpp = volp->nameNextp;
1477 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1478 volp->nameNextp = NULL;
1485 /* call with volume write-locked and mutex held */
1486 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1489 struct cm_vol_state * statep;
1491 statep = cm_VolumeStateByType(volp, volType);
1493 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1496 i = CM_VOLUME_ID_HASH(statep->ID);
1500 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1501 cm_data.volumeRWIDHashTablep[i] = volp;
1504 statep->nextp = cm_data.volumeROIDHashTablep[i];
1505 cm_data.volumeROIDHashTablep[i] = volp;
1508 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1509 cm_data.volumeBKIDHashTablep[i] = volp;
1512 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1516 /* call with volume write-locked and mutex held */
1517 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1519 cm_volume_t **lvolpp;
1521 struct cm_vol_state * statep;
1524 statep = cm_VolumeStateByType(volp, volType);
1526 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1527 /* hash it out first */
1528 i = CM_VOLUME_ID_HASH(statep->ID);
1532 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1533 tvolp = cm_data.volumeRWIDHashTablep[i];
1536 lvolpp = &cm_data.volumeROIDHashTablep[i];
1537 tvolp = cm_data.volumeROIDHashTablep[i];
1540 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1541 tvolp = cm_data.volumeBKIDHashTablep[i];
1544 osi_assertx(0, "invalid volume type");
1547 if (tvolp == volp) {
1548 *lvolpp = statep->nextp;
1549 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1550 statep->nextp = NULL;
1554 lvolpp = &tvolp->vol[volType].nextp;
1555 tvolp = tvolp->vol[volType].nextp;
1560 /* must be called with cm_volumeLock write-locked! */
1561 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1563 if (volp == cm_data.volumeLRULastp)
1564 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1565 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1566 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1567 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1568 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1569 if (!cm_data.volumeLRULastp)
1570 cm_data.volumeLRULastp = volp;
1573 /* must be called with cm_volumeLock write-locked! */
1574 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1576 if (volp == cm_data.volumeLRULastp)
1579 if (volp == cm_data.volumeLRUFirstp)
1580 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1581 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1582 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1583 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1584 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1585 if (!cm_data.volumeLRULastp)
1586 cm_data.volumeLRULastp = volp;
1589 /* must be called with cm_volumeLock write-locked! */
1590 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1592 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1593 if (volp == cm_data.volumeLRULastp)
1594 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1595 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1596 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1600 static char * volstatus_str(enum volstatus vs)
1616 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1618 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1621 if (volID == volp->vol[RWVOL].ID)
1623 else if (volID == volp->vol[ROVOL].ID)
1625 else if (volID == volp->vol[BACKVOL].ID)
1629 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1631 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1632 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1634 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1637 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1639 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1641 return statep->state;
1646 /* Renew .readonly volume callbacks that are more than
1647 * 30 minutes old. (A volume callback is issued for 2 hours.)
1650 cm_VolumeRenewROCallbacks(void)
1653 time_t minexp = time(NULL) + 90 * 60;
1655 lock_ObtainRead(&cm_volumeLock);
1656 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1657 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1662 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1666 lock_ReleaseRead(&cm_volumeLock);
1667 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1668 lock_ObtainWrite(&scp->rw);
1669 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1670 lock_ReleaseWrite(&scp->rw);
1671 cm_ReleaseSCache(scp);
1673 lock_ObtainRead(&cm_volumeLock);
1676 lock_ReleaseRead(&cm_volumeLock);
1680 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1682 return &volp->vol[volType];
1686 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1688 cm_vol_state_t * statep = NULL;
1690 if (id == volp->vol[RWVOL].ID)
1691 statep = &volp->vol[RWVOL];
1692 else if (id == volp->vol[ROVOL].ID)
1693 statep = &volp->vol[ROVOL];
1694 else if (id == volp->vol[BACKVOL].ID)
1695 statep = &volp->vol[BACKVOL];
1701 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1703 size_t len = strlen(volname);
1704 cm_vol_state_t *statep;
1706 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1707 statep = &volp->vol[ROVOL];
1708 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1709 statep = &volp->vol[BACKVOL];
1711 statep = &volp->vol[RWVOL];