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,
761 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
768 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
769 struct cm_user *userp, struct cm_req *reqp,
770 afs_uint32 flags, cm_volume_t **outVolpp)
773 #ifdef SEARCH_ALL_VOLUMES
777 char name[VL_MAXNAMELEN];
782 strncpy(name, volumeNamep, VL_MAXNAMELEN);
783 name[VL_MAXNAMELEN-1] = '\0';
786 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
788 name[len - 7] = '\0';
789 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
791 name[len - 9] = '\0';
796 lock_ObtainRead(&cm_volumeLock);
797 #ifdef SEARCH_ALL_VOLUMES
798 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
799 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
804 #endif /* SEARCH_ALL_VOLUMES */
806 hash = CM_VOLUME_NAME_HASH(name);
807 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
808 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
812 #ifdef SEARCH_ALL_VOLUMES
813 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
816 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
818 /* otherwise, get from VLDB */
821 * Change to a write lock so that we have exclusive use of
822 * the first cm_volume_t with a refCount of 0 so that we
823 * have time to increment it.
825 lock_ConvertRToW(&cm_volumeLock);
827 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
828 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
829 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
830 if ( volp->refCount == 0 ) {
831 /* There is one we can re-use */
836 for ( volp = cm_data.volumeLRULastp;
838 volp = (cm_volume_t *) osi_QPrev(&volp->q))
840 if ( volp->refCount == 0 ) {
841 /* There is one we can re-use */
847 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
849 InterlockedIncrement(&volp->refCount);
850 lock_ReleaseWrite(&cm_volumeLock);
851 lock_ObtainWrite(&volp->rw);
852 lock_ObtainWrite(&cm_volumeLock);
854 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
855 volp->cellp->name, volp->namep);
857 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
858 cm_RemoveVolumeFromLRU(volp);
859 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
860 cm_RemoveVolumeFromNameHashTable(volp);
862 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
863 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
864 cm_RemoveVolumeFromIDHashTable(volp, volType);
865 if (volp->vol[volType].ID)
866 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
867 volp->vol[volType].ID = 0;
868 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
869 lock_ReleaseWrite(&cm_volumeLock);
870 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
871 lock_ObtainWrite(&cm_volumeLock);
874 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
875 memset(volp, 0, sizeof(cm_volume_t));
876 volp->magic = CM_VOLUME_MAGIC;
877 volp->allNextp = cm_data.allVolumesp;
878 cm_data.allVolumesp = volp;
879 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
880 lock_ReleaseWrite(&cm_volumeLock);
881 lock_ObtainWrite(&volp->rw);
882 lock_ObtainWrite(&cm_volumeLock);
883 volp->refCount = 1; /* starts off held */
886 strncpy(volp->namep, name, VL_MAXNAMELEN);
887 volp->namep[VL_MAXNAMELEN-1] = '\0';
888 volp->flags = CM_VOLUMEFLAG_RESET;
890 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
891 volp->vol[volType].state = vl_unknown;
892 volp->vol[volType].nextp = NULL;
893 volp->vol[volType].flags = 0;
895 volp->cbExpiresRO = 0;
896 cm_AddVolumeToNameHashTable(volp);
897 lock_ReleaseWrite(&cm_volumeLock);
902 lock_ReleaseRead(&cm_volumeLock);
905 return CM_ERROR_NOSUCHVOLUME;
907 lock_ObtainWrite(&volp->rw);
910 /* if we get here we are holding the mutex */
911 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
912 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
914 lock_ReleaseWrite(&volp->rw);
916 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
917 type == ROVOL && volp->vol[ROVOL].ID == 0))
918 code = CM_ERROR_NOSUCHVOLUME;
923 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
924 lock_ObtainWrite(&cm_volumeLock);
925 cm_AdjustVolumeLRU(volp);
926 lock_ReleaseWrite(&cm_volumeLock);
929 lock_ObtainRead(&cm_volumeLock);
931 lock_ReleaseRead(&cm_volumeLock);
934 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
935 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
936 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
939 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
940 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
947 * Only call this function in response to a VNOVOL or VMOVED error
948 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
949 * as that can lead to recursive calls.
951 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
955 #ifdef SEARCH_ALL_VOLUMES
962 return CM_ERROR_INVAL;
964 cellp = cm_FindCellByID(fidp->cell, 0);
966 return CM_ERROR_NOSUCHCELL;
968 /* search for the volume */
969 lock_ObtainRead(&cm_volumeLock);
970 #ifdef SEARCH_ALL_VOLUMES
971 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
972 if (cellp == volp->cellp &&
973 (fidp->volume == volp->vol[RWVOL].ID ||
974 fidp->volume == volp->vol[ROVOL].ID ||
975 fidp->volume == volp->vol[BACKVOL].ID))
978 #endif /* SEARCH_ALL_VOLUMES */
980 hash = CM_VOLUME_ID_HASH(fidp->volume);
981 /* The volumeID can be any one of the three types. So we must
982 * search the hash table for all three types until we find it.
983 * We will search in the order of RO, RW, BK.
985 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
986 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
991 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
992 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
998 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
999 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1004 #ifdef SEARCH_ALL_VOLUMES
1005 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1007 /* hold the volume if we found it */
1011 lock_ReleaseRead(&cm_volumeLock);
1014 return CM_ERROR_NOSUCHVOLUME;
1017 cm_data.mountRootGen = time(NULL);
1018 lock_ObtainWrite(&volp->rw);
1019 volp->flags |= CM_VOLUMEFLAG_RESET;
1021 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1022 lock_ReleaseWrite(&volp->rw);
1024 lock_ObtainRead(&cm_volumeLock);
1026 lock_ReleaseRead(&cm_volumeLock);
1031 /* find the appropriate servers from a volume */
1032 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1034 cm_serverRef_t **serverspp;
1035 cm_serverRef_t *current;
1039 lock_ObtainWrite(&cm_serverLock);
1041 if (volume == volp->vol[RWVOL].ID)
1042 serverspp = &volp->vol[RWVOL].serversp;
1043 else if (volume == volp->vol[ROVOL].ID)
1044 serverspp = &volp->vol[ROVOL].serversp;
1045 else if (volume == volp->vol[BACKVOL].ID)
1046 serverspp = &volp->vol[BACKVOL].serversp;
1048 lock_ReleaseWrite(&cm_serverLock);
1052 lock_ObtainWrite(&volp->rw);
1053 volp->flags |= CM_VOLUMEFLAG_RESET;
1054 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1055 lock_ReleaseWrite(&volp->rw);
1063 * Increment the refCount on deleted items as well.
1064 * They will be freed by cm_FreeServerList when they get to zero
1066 for (current = *serverspp; current; current = current->next)
1067 current->refCount++;
1069 lock_ReleaseWrite(&cm_serverLock);
1074 void cm_PutVolume(cm_volume_t *volp)
1076 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1077 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1080 /* return the read-only volume, if there is one, or the read-write volume if
1083 long cm_GetROVolumeID(cm_volume_t *volp)
1087 lock_ObtainRead(&volp->rw);
1088 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1089 id = volp->vol[ROVOL].ID;
1091 id = volp->vol[RWVOL].ID;
1092 lock_ReleaseRead(&volp->rw);
1097 void cm_RefreshVolumes(void)
1103 cm_data.mountRootGen = time(NULL);
1105 /* force a re-loading of volume data from the vldb */
1106 lock_ObtainRead(&cm_volumeLock);
1107 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1108 InterlockedIncrement(&volp->refCount);
1109 lock_ReleaseRead(&cm_volumeLock);
1111 lock_ObtainWrite(&volp->rw);
1112 volp->flags |= CM_VOLUMEFLAG_RESET;
1113 lock_ReleaseWrite(&volp->rw);
1115 lock_ObtainRead(&cm_volumeLock);
1116 refCount = InterlockedDecrement(&volp->refCount);
1117 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1119 lock_ReleaseRead(&cm_volumeLock);
1121 /* force mount points to be re-evaluated so that
1122 * if the volume location has changed we will pick
1125 for ( scp = cm_data.scacheLRUFirstp;
1127 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1128 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1129 #ifdef AFS_FREELANCE_CLIENT
1130 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1133 lock_ObtainWrite(&scp->rw);
1134 scp->mountPointStringp[0] = '\0';
1135 lock_ReleaseWrite(&scp->rw);
1142 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1143 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1147 AFSFetchVolumeStatus volStat;
1152 struct rx_connection * rxconnp;
1154 char offLineMsg[256];
1156 long alldown, alldeleted;
1157 cm_serverRef_t *serversp;
1160 OfflineMsg = offLineMsg;
1163 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1164 if (!statep->serversp && !(*volumeUpdatedp)) {
1166 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1167 *volumeUpdatedp = 1;
1170 if (statep->serversp) {
1173 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1174 if (serversp->status == srv_deleted)
1181 if (serversp->status == srv_busy || serversp->status == srv_offline)
1182 serversp->status = srv_not_busy;
1185 if (alldeleted && !(*volumeUpdatedp)) {
1187 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1188 *volumeUpdatedp = 1;
1191 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1192 (!alldown && statep->state == vl_alldown)) {
1195 lock_ReleaseWrite(&volp->rw);
1197 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1201 rxconnp = cm_GetRxConn(connp);
1202 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1203 &volStat, &Name, &OfflineMsg, &MOTD);
1204 rx_PutConnection(rxconnp);
1206 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1207 code = cm_MapRPCError(code, &req);
1209 lock_ObtainWrite(&volp->rw);
1210 if (code == 0 && volStat.Online) {
1211 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1212 statep->state = vl_online;
1214 } else if (code == CM_ERROR_NOACCESS) {
1215 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1216 statep->state = vl_unknown;
1219 } else if (alldown && statep->state != vl_alldown) {
1220 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1221 statep->state = vl_alldown;
1223 } else if (statep->state != vl_alldown) {
1224 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1225 statep->state = vl_alldown;
1230 /* The return code is 0 if the volume is not online and
1231 * 1 if the volume is online
1234 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1238 afs_uint32 online = 0;
1239 afs_uint32 volumeUpdated = 0;
1241 lock_ObtainWrite(&volp->rw);
1243 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1245 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1249 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1250 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1251 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1253 lock_ReleaseWrite(&volp->rw);
1258 /* called from the Daemon thread */
1259 void cm_CheckOfflineVolumes(void)
1264 lock_ObtainRead(&cm_volumeLock);
1265 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1266 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1267 InterlockedIncrement(&volp->refCount);
1268 lock_ReleaseRead(&cm_volumeLock);
1269 cm_CheckOfflineVolume(volp, 0);
1270 lock_ObtainRead(&cm_volumeLock);
1271 refCount = InterlockedDecrement(&volp->refCount);
1272 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1275 lock_ReleaseRead(&cm_volumeLock);
1280 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1282 enum volstatus newStatus;
1283 cm_serverRef_t *tsrp;
1285 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1288 if (!volp || !statep) {
1295 lock_ObtainWrite(&cm_serverLock);
1296 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1298 sprintf(addr, "%d.%d.%d.%d",
1299 ((tsp->addr.sin_addr.s_addr & 0xff)),
1300 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1301 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1302 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1304 if (tsrp->status == srv_deleted) {
1305 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1306 statep->ID, osi_LogSaveString(afsd_logp,addr));
1310 cm_GetServerNoLock(tsp);
1311 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1313 if (tsrp->status == srv_busy) {
1314 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1315 statep->ID, osi_LogSaveString(afsd_logp,addr));
1318 } else if (tsrp->status == srv_offline) {
1319 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1320 statep->ID, osi_LogSaveString(afsd_logp,addr));
1324 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1325 statep->ID, osi_LogSaveString(afsd_logp,addr));
1330 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1331 statep->ID, osi_LogSaveString(afsd_logp,addr));
1333 cm_PutServerNoLock(tsp);
1336 lock_ReleaseWrite(&cm_serverLock);
1338 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1339 allDown, allBusy, someBusy, someOffline, allOffline);
1342 newStatus = vl_alldown;
1343 else if (allBusy || (someBusy && someOffline))
1344 newStatus = vl_busy;
1345 else if (allOffline)
1346 newStatus = vl_offline;
1348 newStatus = vl_online;
1350 if (statep->ID && statep->state != newStatus)
1351 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1353 statep->state = newStatus;
1357 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1360 if (volp->vol[RWVOL].ID == volID) {
1361 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1362 } else if (volp->vol[ROVOL].ID == volID) {
1363 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1364 } else if (volp->vol[BACKVOL].ID == volID) {
1365 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1368 * If we are called with volID == 0 then something has gone wrong.
1369 * Most likely a race occurred in the server volume list maintenance.
1370 * Since we don't know which volume's status should be updated,
1371 * just update all of them that are known to exist. Better to be
1372 * correct than fast.
1375 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1376 if (volp->vol[volType].ID != 0)
1377 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1383 ** Finds all volumes that reside on this server and reorders their
1384 ** RO list according to the changed rank of server.
1386 void cm_ChangeRankVolume(cm_server_t *tsp)
1392 /* find volumes which might have RO copy on server*/
1393 lock_ObtainRead(&cm_volumeLock);
1394 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1396 code = 1 ; /* assume that list is unchanged */
1397 InterlockedIncrement(&volp->refCount);
1398 lock_ReleaseRead(&cm_volumeLock);
1399 lock_ObtainWrite(&volp->rw);
1401 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1402 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1404 /* this volume list was changed */
1406 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1408 lock_ReleaseWrite(&volp->rw);
1409 lock_ObtainRead(&cm_volumeLock);
1410 refCount = InterlockedDecrement(&volp->refCount);
1411 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1413 lock_ReleaseRead(&cm_volumeLock);
1416 /* dump all volumes that have reference count > 0 to a file.
1417 * cookie is used to identify this batch for easy parsing,
1418 * and it a string provided by a caller
1420 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1427 lock_ObtainRead(&cm_scacheLock);
1428 lock_ObtainRead(&cm_volumeLock);
1431 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1432 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1434 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1436 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1437 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1439 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1441 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1442 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1445 lock_ReleaseRead(&cm_volumeLock);
1446 lock_ReleaseRead(&cm_scacheLock);
1453 * String hash function used by SDBM project.
1454 * It was chosen because it is fast and provides
1457 afs_uint32 SDBMHash(const char * str)
1459 afs_uint32 hash = 0;
1465 for(i = 0, len = strlen(str); i < len; i++)
1467 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1470 return (hash & 0x7FFFFFFF);
1473 /* call with volume write-locked and mutex held */
1474 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1478 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1481 i = CM_VOLUME_NAME_HASH(volp->namep);
1483 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1484 cm_data.volumeNameHashTablep[i] = volp;
1485 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1488 /* call with volume write-locked and mutex held */
1489 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1491 cm_volume_t **lvolpp;
1495 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1496 /* hash it out first */
1497 i = CM_VOLUME_NAME_HASH(volp->namep);
1498 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1500 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1501 if (tvolp == volp) {
1502 *lvolpp = volp->nameNextp;
1503 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1504 volp->nameNextp = NULL;
1511 /* call with volume write-locked and mutex held */
1512 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1515 struct cm_vol_state * statep;
1517 statep = cm_VolumeStateByType(volp, volType);
1519 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1522 i = CM_VOLUME_ID_HASH(statep->ID);
1526 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1527 cm_data.volumeRWIDHashTablep[i] = volp;
1530 statep->nextp = cm_data.volumeROIDHashTablep[i];
1531 cm_data.volumeROIDHashTablep[i] = volp;
1534 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1535 cm_data.volumeBKIDHashTablep[i] = volp;
1538 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1542 /* call with volume write-locked and mutex held */
1543 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1545 cm_volume_t **lvolpp;
1547 struct cm_vol_state * statep;
1550 statep = cm_VolumeStateByType(volp, volType);
1552 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1553 /* hash it out first */
1554 i = CM_VOLUME_ID_HASH(statep->ID);
1558 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1559 tvolp = cm_data.volumeRWIDHashTablep[i];
1562 lvolpp = &cm_data.volumeROIDHashTablep[i];
1563 tvolp = cm_data.volumeROIDHashTablep[i];
1566 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1567 tvolp = cm_data.volumeBKIDHashTablep[i];
1570 osi_assertx(0, "invalid volume type");
1573 if (tvolp == volp) {
1574 *lvolpp = statep->nextp;
1575 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1576 statep->nextp = NULL;
1580 lvolpp = &tvolp->vol[volType].nextp;
1581 tvolp = tvolp->vol[volType].nextp;
1586 /* must be called with cm_volumeLock write-locked! */
1587 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1589 if (volp == cm_data.volumeLRULastp)
1590 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1591 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1592 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1593 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1594 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1595 if (!cm_data.volumeLRULastp)
1596 cm_data.volumeLRULastp = volp;
1599 /* must be called with cm_volumeLock write-locked! */
1600 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1602 if (volp == cm_data.volumeLRULastp)
1605 if (volp == cm_data.volumeLRUFirstp)
1606 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1607 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1608 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1609 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1610 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1611 if (!cm_data.volumeLRULastp)
1612 cm_data.volumeLRULastp = volp;
1615 /* must be called with cm_volumeLock write-locked! */
1616 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1618 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1619 if (volp == cm_data.volumeLRULastp)
1620 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1621 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1622 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1626 static char * volstatus_str(enum volstatus vs)
1642 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1644 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1647 if (volID == volp->vol[RWVOL].ID)
1649 else if (volID == volp->vol[ROVOL].ID)
1651 else if (volID == volp->vol[BACKVOL].ID)
1655 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1657 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1658 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1660 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1663 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1665 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1667 return statep->state;
1672 /* Renew .readonly volume callbacks that are more than
1673 * 30 minutes old. (A volume callback is issued for 2 hours.)
1676 cm_VolumeRenewROCallbacks(void)
1679 time_t minexp = time(NULL) + 90 * 60;
1681 lock_ObtainRead(&cm_volumeLock);
1682 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1683 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1688 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1692 lock_ReleaseRead(&cm_volumeLock);
1693 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1694 lock_ObtainWrite(&scp->rw);
1695 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1696 lock_ReleaseWrite(&scp->rw);
1697 cm_ReleaseSCache(scp);
1699 lock_ObtainRead(&cm_volumeLock);
1702 lock_ReleaseRead(&cm_volumeLock);
1706 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1708 return &volp->vol[volType];
1712 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1714 cm_vol_state_t * statep = NULL;
1716 if (id == volp->vol[RWVOL].ID)
1717 statep = &volp->vol[RWVOL];
1718 else if (id == volp->vol[ROVOL].ID)
1719 statep = &volp->vol[ROVOL];
1720 else if (id == volp->vol[BACKVOL].ID)
1721 statep = &volp->vol[BACKVOL];
1727 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1729 size_t len = strlen(volname);
1730 cm_vol_state_t *statep;
1732 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1733 statep = &volp->vol[ROVOL];
1734 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1735 statep = &volp->vol[BACKVOL];
1737 statep = &volp->vol[RWVOL];