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");
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");
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_alldown, 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 #ifdef AFS_FREELANCE_CLIENT
189 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
192 memset(&vldbEntry, 0, sizeof(vldbEntry));
193 vldbEntry.flags |= VLF_RWEXISTS;
194 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
200 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
201 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
202 volp->cellp->name, volp->namep, volp->flags);
203 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
204 lock_ObtainWrite(&volp->rw);
205 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
206 volp->cellp->name, volp->namep, volp->flags);
207 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
208 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
209 volp->cellp->name, volp->namep, volp->flags);
210 osi_Wakeup((LONG_PTR) &volp->flags);
215 /* clear out old bindings */
216 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
217 if (volp->vol[volType].serversp)
218 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
221 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
222 lock_ReleaseWrite(&volp->rw);
224 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
225 cm_UpdateCell(cellp, 0);
227 /* now we have volume structure locked and held; make RPC to fill it */
228 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name, volp->namep);
230 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
234 code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
236 if ( code == RXGEN_OPCODE )
239 code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
242 if ( code == RXGEN_OPCODE ) {
243 code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
246 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
247 code = cm_MapVLRPCError(code, reqp);
249 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
250 volp->cellp->name, volp->namep, code);
252 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
253 volp->cellp->name, volp->namep);
256 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
257 * does not exist but there might exist a .readonly volume. If the base name
258 * doesn't exist we will not care about the .backup that might be left behind
259 * since there should be no method to access it.
261 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
262 char name[VL_MAXNAMELEN];
264 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
266 /* now we have volume structure locked and held; make RPC to fill it */
267 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name,
268 osi_LogSaveString(afsd_logp,name));
270 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
274 code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
276 if ( code == RXGEN_OPCODE )
279 code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
282 if ( code == RXGEN_OPCODE ) {
283 code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
286 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
287 code = cm_MapVLRPCError(code, reqp);
289 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
290 volp->cellp->name, osi_LogSaveString(afsd_logp,name), code);
292 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
293 volp->cellp->name, osi_LogSaveString(afsd_logp,name));
296 lock_ObtainWrite(&volp->rw);
303 afs_int32 serverNumber[NMAXNSERVERS];
304 afs_int32 serverFlags[NMAXNSERVERS];
305 afs_int32 rwServers_alldown = 1;
306 afs_int32 roServers_alldown = 1;
307 afs_int32 bkServers_alldown = 1;
308 char name[VL_MAXNAMELEN];
310 #ifdef AFS_FREELANCE_CLIENT
312 rwServers_alldown = 0;
317 flags = vldbEntry.flags;
318 nServers = vldbEntry.nServers;
319 rwID = vldbEntry.volumeId[0];
320 roID = vldbEntry.volumeId[1];
321 bkID = vldbEntry.volumeId[2];
322 for ( i=0; i<nServers; i++ ) {
323 serverFlags[i] = vldbEntry.serverFlags[i];
324 serverNumber[i] = vldbEntry.serverNumber[i];
326 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
327 name[VL_MAXNAMELEN - 1] = '\0';
330 flags = nvldbEntry.flags;
331 nServers = nvldbEntry.nServers;
332 rwID = nvldbEntry.volumeId[0];
333 roID = nvldbEntry.volumeId[1];
334 bkID = nvldbEntry.volumeId[2];
335 for ( i=0; i<nServers; i++ ) {
336 serverFlags[i] = nvldbEntry.serverFlags[i];
337 serverNumber[i] = nvldbEntry.serverNumber[i];
339 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
340 name[VL_MAXNAMELEN - 1] = '\0';
344 flags = uvldbEntry.flags;
345 nServers = uvldbEntry.nServers;
346 rwID = uvldbEntry.volumeId[0];
347 roID = uvldbEntry.volumeId[1];
348 bkID = uvldbEntry.volumeId[2];
349 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
350 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
351 serverFlags[j] = uvldbEntry.serverFlags[i];
352 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
355 afs_uint32 * addrp, nentries, code, unique;
357 ListAddrByAttributes attrs;
360 memset((char *)&attrs, 0, sizeof(attrs));
361 attrs.Mask = VLADDR_UUID;
362 attrs.uuid = uvldbEntry.serverNumber[i];
363 memset((char *)&uuid, 0, sizeof(uuid));
364 memset((char *)&addrs, 0, sizeof(addrs));
367 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
371 code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
372 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
375 code = cm_MapVLRPCError(code, reqp);
376 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
380 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
382 addrp = addrs.bulkaddrs_val;
383 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
384 serverFlags[j] = uvldbEntry.serverFlags[i];
385 serverNumber[j] = addrp[k];
388 free(addrs.bulkaddrs_val); /* This is wrong */
391 code = CM_ERROR_INVAL;
394 nServers = j; /* update the server count */
395 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
396 name[VL_MAXNAMELEN - 1] = '\0';
401 /* decode the response */
402 lock_ObtainWrite(&cm_volumeLock);
403 if (cm_VolNameIsID(volp->namep)) {
408 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
409 name[len - 7] = '\0';
410 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
411 name[len - 9] = '\0';
414 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s", volp->namep, name);
416 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
417 cm_RemoveVolumeFromNameHashTable(volp);
419 strcpy(volp->namep, name);
421 cm_AddVolumeToNameHashTable(volp);
424 if (flags & VLF_RWEXISTS) {
425 if (volp->vol[RWVOL].ID != rwID) {
426 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
427 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
428 volp->vol[RWVOL].ID = rwID;
429 cm_AddVolumeToIDHashTable(volp, RWVOL);
432 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
433 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
434 volp->vol[RWVOL].ID = 0;
436 if (flags & VLF_ROEXISTS) {
437 if (volp->vol[ROVOL].ID != roID) {
438 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
439 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
440 volp->vol[ROVOL].ID = roID;
441 cm_AddVolumeToIDHashTable(volp, ROVOL);
444 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
445 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
446 volp->vol[ROVOL].ID = 0;
448 if (flags & VLF_BACKEXISTS) {
449 if (volp->vol[BACKVOL].ID != bkID) {
450 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
451 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
452 volp->vol[BACKVOL].ID = bkID;
453 cm_AddVolumeToIDHashTable(volp, BACKVOL);
456 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
457 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
458 volp->vol[BACKVOL].ID = 0;
460 lock_ReleaseWrite(&cm_volumeLock);
461 for (i=0; i<nServers; i++) {
462 /* create a server entry */
463 tflags = serverFlags[i];
464 if (tflags & VLSF_DONTUSE)
466 tsockAddr.sin_family = AF_INET;
467 tempAddr = htonl(serverNumber[i]);
468 tsockAddr.sin_addr.s_addr = tempAddr;
469 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
471 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
474 /* if this server was created by fs setserverprefs */
478 osi_assertx(tsp != NULL, "null cm_server_t");
480 /* and add it to the list(s). */
482 * Each call to cm_NewServerRef() increments the
483 * ref count of tsp. These reference will be dropped,
484 * if and when the volume is reset; see reset code
485 * earlier in this function.
487 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
488 tsrp = cm_NewServerRef(tsp, rwID);
489 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
491 lock_ObtainWrite(&cm_serverLock);
492 tsrp->refCount--; /* drop allocation reference */
493 lock_ReleaseWrite(&cm_serverLock);
495 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
496 rwServers_alldown = 0;
498 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
499 tsrp = cm_NewServerRef(tsp, roID);
500 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
501 lock_ObtainWrite(&cm_serverLock);
502 tsrp->refCount--; /* drop allocation reference */
503 lock_ReleaseWrite(&cm_serverLock);
506 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
507 roServers_alldown = 0;
509 /* We don't use VLSF_BACKVOL !?! */
510 /* Because only the backup on the server holding the RW
511 * volume can be valid. This check prevents errors if a
512 * RW is moved but the old backup is not removed.
514 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
515 tsrp = cm_NewServerRef(tsp, bkID);
516 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
517 lock_ObtainWrite(&cm_serverLock);
518 tsrp->refCount--; /* drop allocation reference */
519 lock_ReleaseWrite(&cm_serverLock);
521 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
522 bkServers_alldown = 0;
524 /* Drop the reference obtained by cm_FindServer() */
531 * If the first n servers have the same ipRank, then we
532 * randomly pick one among them and move it to the beginning.
533 * We don't bother to re-order the whole list because
534 * the rest of the list is used only if the first server is
535 * down. We only do this for the RO list; we assume the other
536 * lists are length 1.
539 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
542 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
543 roNewstate = roServers_alldown ? vl_alldown : vl_online;
544 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
545 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT) {
546 /* this volume does not exist - we should discard it */
547 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
548 cm_RemoveVolumeFromNameHashTable(volp);
549 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
550 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
551 cm_RemoveVolumeFromIDHashTable(volp, volType);
552 if (volp->vol[volType].ID) {
553 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
554 volp->vol[volType].ID = 0;
556 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
559 /* Move to the end so it will be recycled first */
560 cm_MoveVolumeToLRULast(volp);
562 volp->namep[0] ='\0';
564 rwNewstate = roNewstate = bkNewstate = vl_alldown;
567 if (volp->vol[RWVOL].state != rwNewstate) {
568 if (volp->vol[RWVOL].ID)
569 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
570 volp->vol[RWVOL].state = rwNewstate;
572 if (volp->vol[ROVOL].state != roNewstate) {
573 if (volp->vol[ROVOL].ID)
574 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
575 volp->vol[ROVOL].state = roNewstate;
577 if (volp->vol[BACKVOL].state != bkNewstate) {
578 if (volp->vol[BACKVOL].ID)
579 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
580 volp->vol[BACKVOL].state = bkNewstate;
584 volp->flags &= ~CM_VOLUMEFLAG_RESET;
586 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
587 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
588 volp->cellp->name, volp->namep, volp->flags, code);
589 osi_Wakeup((LONG_PTR) &volp->flags);
594 /* Requires read or write lock on cm_volumeLock */
595 void cm_GetVolume(cm_volume_t *volp)
597 InterlockedIncrement(&volp->refCount);
600 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
605 lock_ObtainRead(&cm_volumeLock);
606 hash = CM_VOLUME_ID_HASH(fidp->volume);
607 /* The volumeID can be any one of the three types. So we must
608 * search the hash table for all three types until we find it.
609 * We will search in the order of RO, RW, BK.
611 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
612 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
617 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
618 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
624 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
625 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
630 /* hold the volume if we found it */
634 lock_ReleaseRead(&cm_volumeLock);
638 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
639 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
642 #ifdef SEARCH_ALL_VOLUMES
645 char volNameString[VL_MAXNAMELEN];
649 lock_ObtainRead(&cm_volumeLock);
650 #ifdef SEARCH_ALL_VOLUMES
651 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
652 if (cellp == volp->cellp &&
653 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
654 (unsigned) volumeID == volp->vol[ROVOL].ID ||
655 (unsigned) volumeID == volp->vol[BACKVOL].ID))
660 #endif /* SEARCH_ALL_VOLUMES */
662 hash = CM_VOLUME_ID_HASH(volumeID);
663 /* The volumeID can be any one of the three types. So we must
664 * search the hash table for all three types until we find it.
665 * We will search in the order of RO, RW, BK.
667 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
668 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
673 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
674 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
680 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
681 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
686 #ifdef SEARCH_ALL_VOLUMES
687 osi_assertx(volp == volp2, "unexpected cm_vol_t");
690 /* hold the volume if we found it */
694 lock_ReleaseRead(&cm_volumeLock);
698 lock_ObtainWrite(&volp->rw);
701 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
702 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
704 lock_ReleaseWrite(&volp->rw);
708 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
709 lock_ObtainWrite(&cm_volumeLock);
710 cm_AdjustVolumeLRU(volp);
711 lock_ReleaseWrite(&cm_volumeLock);
714 lock_ObtainRead(&cm_volumeLock);
716 lock_ReleaseRead(&cm_volumeLock);
721 /* otherwise, we didn't find it so consult the VLDB */
722 sprintf(volNameString, "%u", volumeID);
723 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
729 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
730 struct cm_user *userp, struct cm_req *reqp,
731 afs_uint32 flags, cm_volume_t **outVolpp)
734 #ifdef SEARCH_ALL_VOLUMES
738 char name[VL_MAXNAMELEN];
743 strncpy(name, volumeNamep, VL_MAXNAMELEN);
744 name[VL_MAXNAMELEN-1] = '\0';
747 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
749 name[len - 7] = '\0';
750 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
752 name[len - 9] = '\0';
757 lock_ObtainRead(&cm_volumeLock);
758 #ifdef SEARCH_ALL_VOLUMES
759 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
760 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
765 #endif /* SEARCH_ALL_VOLUMES */
767 hash = CM_VOLUME_NAME_HASH(name);
768 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
769 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
773 #ifdef SEARCH_ALL_VOLUMES
774 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
777 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
779 /* otherwise, get from VLDB */
781 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
782 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
783 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
784 if ( volp->refCount == 0 ) {
785 /* There is one we can re-use */
790 for ( volp = cm_data.volumeLRULastp;
792 volp = (cm_volume_t *) osi_QPrev(&volp->q))
794 if ( volp->refCount == 0 ) {
795 /* There is one we can re-use */
801 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
803 lock_ReleaseRead(&cm_volumeLock);
804 lock_ObtainWrite(&volp->rw);
805 lock_ObtainWrite(&cm_volumeLock);
807 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
808 volp->cellp->name, volp->namep);
810 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
811 cm_RemoveVolumeFromLRU(volp);
812 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
813 cm_RemoveVolumeFromNameHashTable(volp);
815 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
816 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
817 cm_RemoveVolumeFromIDHashTable(volp, volType);
818 if (volp->vol[volType].ID)
819 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
820 volp->vol[volType].ID = 0;
821 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
824 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
825 memset(volp, 0, sizeof(cm_volume_t));
826 volp->magic = CM_VOLUME_MAGIC;
827 volp->allNextp = cm_data.allVolumesp;
828 cm_data.allVolumesp = volp;
829 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock");
830 lock_ReleaseRead(&cm_volumeLock);
831 lock_ObtainWrite(&volp->rw);
832 lock_ObtainWrite(&cm_volumeLock);
835 strncpy(volp->namep, name, VL_MAXNAMELEN);
836 volp->namep[VL_MAXNAMELEN-1] = '\0';
837 volp->refCount = 1; /* starts off held */
838 volp->flags = CM_VOLUMEFLAG_RESET;
840 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
841 volp->vol[volType].state = vl_unknown;
842 volp->vol[volType].nextp = NULL;
843 volp->vol[volType].flags = 0;
845 volp->cbExpiresRO = 0;
846 cm_AddVolumeToNameHashTable(volp);
847 lock_ReleaseWrite(&cm_volumeLock);
852 lock_ReleaseRead(&cm_volumeLock);
855 return CM_ERROR_NOSUCHVOLUME;
857 lock_ObtainWrite(&volp->rw);
860 /* if we get here we are holding the mutex */
861 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
862 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
864 lock_ReleaseWrite(&volp->rw);
866 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
867 type == ROVOL && volp->vol[ROVOL].ID == 0))
868 code = CM_ERROR_NOSUCHVOLUME;
873 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
874 lock_ObtainWrite(&cm_volumeLock);
875 cm_AdjustVolumeLRU(volp);
876 lock_ReleaseWrite(&cm_volumeLock);
879 lock_ObtainRead(&cm_volumeLock);
881 lock_ReleaseRead(&cm_volumeLock);
886 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
890 #ifdef SEARCH_ALL_VOLUMES
897 cellp = cm_FindCellByID(fidp->cell, 0);
900 /* search for the volume */
901 lock_ObtainRead(&cm_volumeLock);
902 #ifdef SEARCH_ALL_VOLUMES
903 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
904 if (cellp == volp->cellp &&
905 (fidp->volume == volp->vol[RWVOL].ID ||
906 fidp->volume == volp->vol[ROVOL].ID ||
907 fidp->volume == volp->vol[BACKVOL].ID))
910 #endif /* SEARCH_ALL_VOLUMES */
912 hash = CM_VOLUME_ID_HASH(fidp->volume);
913 /* The volumeID can be any one of the three types. So we must
914 * search the hash table for all three types until we find it.
915 * We will search in the order of RO, RW, BK.
917 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
918 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
923 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
924 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
930 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
931 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
936 #ifdef SEARCH_ALL_VOLUMES
937 osi_assertx(volp == volp2, "unexpected cm_vol_t");
939 /* hold the volume if we found it */
943 lock_ReleaseRead(&cm_volumeLock);
949 cm_data.mountRootGen = time(NULL);
950 lock_ObtainWrite(&volp->rw);
951 volp->flags |= CM_VOLUMEFLAG_RESET;
953 /* Mark the volume to be updated but don't update it now.
954 * This function is called only from within cm_Analyze
955 * when cm_ConnByMServers has failed with all servers down
956 * The problem is that cm_UpdateVolume is going to call
957 * cm_ConnByMServers which may cause a recursive chain
958 * of calls each returning a retry on failure.
959 * Instead, set the flag so the next time the volume is
960 * accessed by Name or ID the UpdateVolume call will
963 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
965 lock_ReleaseWrite(&volp->rw);
967 lock_ObtainRead(&cm_volumeLock);
969 lock_ReleaseRead(&cm_volumeLock);
972 /* find the appropriate servers from a volume */
973 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
975 cm_serverRef_t **serverspp;
976 cm_serverRef_t *current;;
978 lock_ObtainWrite(&cm_serverLock);
980 if (volume == volp->vol[RWVOL].ID)
981 serverspp = &volp->vol[RWVOL].serversp;
982 else if (volume == volp->vol[ROVOL].ID)
983 serverspp = &volp->vol[ROVOL].serversp;
984 else if (volume == volp->vol[BACKVOL].ID)
985 serverspp = &volp->vol[BACKVOL].serversp;
987 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
989 for (current = *serverspp; current; current = current->next)
992 lock_ReleaseWrite(&cm_serverLock);
997 void cm_PutVolume(cm_volume_t *volp)
999 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1000 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1003 /* return the read-only volume, if there is one, or the read-write volume if
1006 long cm_GetROVolumeID(cm_volume_t *volp)
1010 lock_ObtainRead(&volp->rw);
1011 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1012 id = volp->vol[ROVOL].ID;
1014 id = volp->vol[RWVOL].ID;
1015 lock_ReleaseRead(&volp->rw);
1020 void cm_RefreshVolumes(void)
1026 cm_data.mountRootGen = time(NULL);
1028 /* force a re-loading of volume data from the vldb */
1029 lock_ObtainRead(&cm_volumeLock);
1030 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1031 InterlockedIncrement(&volp->refCount);
1032 lock_ReleaseRead(&cm_volumeLock);
1034 lock_ObtainWrite(&volp->rw);
1035 volp->flags |= CM_VOLUMEFLAG_RESET;
1036 lock_ReleaseWrite(&volp->rw);
1038 lock_ObtainRead(&cm_volumeLock);
1039 refCount = InterlockedDecrement(&volp->refCount);
1040 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1042 lock_ReleaseRead(&cm_volumeLock);
1044 /* force mount points to be re-evaluated so that
1045 * if the volume location has changed we will pick
1048 for ( scp = cm_data.scacheLRUFirstp;
1050 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1051 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1052 #ifdef AFS_FREELANCE_CLIENT
1053 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1056 lock_ObtainWrite(&scp->rw);
1057 scp->mountPointStringp[0] = '\0';
1058 lock_ReleaseWrite(&scp->rw);
1065 /* The return code is 0 if the volume is not online and
1066 * 1 if the volume is online
1069 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1073 AFSFetchVolumeStatus volStat;
1078 struct rx_connection * rxconnp;
1080 char offLineMsg[256];
1083 cm_serverRef_t *serversp;
1086 OfflineMsg = offLineMsg;
1089 lock_ObtainWrite(&volp->rw);
1091 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1093 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1096 if (volp->vol[RWVOL].ID != 0 && (!volID || volID == volp->vol[RWVOL].ID) &&
1097 volp->vol[RWVOL].serversp) {
1099 for (serversp = volp->vol[RWVOL].serversp; serversp; serversp = serversp->next) {
1100 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1101 serversp->status = srv_not_busy;
1106 if (volp->vol[RWVOL].state == vl_busy || volp->vol[RWVOL].state == vl_offline || volp->vol[RWVOL].state == vl_unknown) {
1109 lock_ReleaseWrite(&volp->rw);
1111 code = cm_ConnFromVolume(volp, volp->vol[RWVOL].ID, cm_rootUserp, &req, &connp);
1115 rxconnp = cm_GetRxConn(connp);
1116 code = RXAFS_GetVolumeStatus(rxconnp, volp->vol[RWVOL].ID,
1117 &volStat, &Name, &OfflineMsg, &MOTD);
1118 rx_PutConnection(rxconnp);
1120 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1121 code = cm_MapRPCError(code, &req);
1123 lock_ObtainWrite(&volp->rw);
1124 if (code == 0 && volStat.Online) {
1125 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, vl_online);
1126 volp->vol[RWVOL].state = vl_online;
1128 } else if (code == CM_ERROR_NOACCESS) {
1129 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, vl_unknown);
1130 volp->vol[RWVOL].state = vl_unknown;
1136 if (volp->vol[ROVOL].ID != 0 && (!volID || volID == volp->vol[ROVOL].ID) &&
1137 volp->vol[ROVOL].serversp) {
1139 for (serversp = volp->vol[ROVOL].serversp; serversp; serversp = serversp->next) {
1140 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1141 serversp->status = srv_not_busy;
1146 if (volp->vol[ROVOL].state == vl_busy || volp->vol[ROVOL].state == vl_offline || volp->vol[ROVOL].state == vl_unknown) {
1149 lock_ReleaseWrite(&volp->rw);
1151 code = cm_ConnFromVolume(volp, volp->vol[ROVOL].ID, cm_rootUserp, &req, &connp);
1155 rxconnp = cm_GetRxConn(connp);
1156 code = RXAFS_GetVolumeStatus(rxconnp, volp->vol[ROVOL].ID,
1157 &volStat, &Name, &OfflineMsg, &MOTD);
1158 rx_PutConnection(rxconnp);
1160 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1161 code = cm_MapRPCError(code, &req);
1163 lock_ObtainWrite(&volp->rw);
1164 if (code == 0 && volStat.Online) {
1165 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, vl_online);
1166 volp->vol[ROVOL].state = vl_online;
1168 } else if (code == CM_ERROR_NOACCESS) {
1169 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, vl_unknown);
1170 volp->vol[ROVOL].state = vl_unknown;
1176 if (volp->vol[BACKVOL].ID != 0 && (!volID || volID == volp->vol[BACKVOL].ID) &&
1177 volp->vol[BACKVOL].serversp) {
1179 for (serversp = volp->vol[BACKVOL].serversp; serversp; serversp = serversp->next) {
1180 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1181 serversp->status = srv_not_busy;
1186 if (volp->vol[BACKVOL].state == vl_busy || volp->vol[BACKVOL].state == vl_offline || volp->vol[BACKVOL].state == vl_unknown) {
1189 lock_ReleaseWrite(&volp->rw);
1191 code = cm_ConnFromVolume(volp, volp->vol[BACKVOL].ID, cm_rootUserp, &req, &connp);
1195 rxconnp = cm_GetRxConn(connp);
1196 code = RXAFS_GetVolumeStatus(rxconnp, volp->vol[BACKVOL].ID,
1197 &volStat, &Name, &OfflineMsg, &MOTD);
1198 rx_PutConnection(rxconnp);
1200 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1201 code = cm_MapRPCError(code, &req);
1203 lock_ObtainWrite(&volp->rw);
1204 if (code == 0 && volStat.Online) {
1205 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, vl_online);
1206 volp->vol[BACKVOL].state = vl_online;
1208 } else if (code == CM_ERROR_NOACCESS) {
1209 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, vl_unknown);
1210 volp->vol[BACKVOL].state = vl_unknown;
1216 lock_ReleaseWrite(&volp->rw);
1221 /* called from the Daemon thread */
1222 void cm_CheckOfflineVolumes(void)
1227 lock_ObtainRead(&cm_volumeLock);
1228 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1229 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1230 InterlockedIncrement(&volp->refCount);
1231 lock_ReleaseRead(&cm_volumeLock);
1232 cm_CheckOfflineVolume(volp, 0);
1233 lock_ObtainRead(&cm_volumeLock);
1234 refCount = InterlockedDecrement(&volp->refCount);
1235 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1238 lock_ReleaseRead(&cm_volumeLock);
1243 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1245 enum volstatus newStatus;
1246 cm_serverRef_t *tsrp;
1248 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1250 if (!volp || !statep) {
1257 lock_ObtainWrite(&cm_serverLock);
1258 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1260 cm_GetServerNoLock(tsp);
1261 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1263 if (tsrp->status == srv_busy) {
1266 } else if (tsrp->status == srv_offline) {
1274 cm_PutServerNoLock(tsp);
1276 lock_ReleaseWrite(&cm_serverLock);
1279 newStatus = vl_alldown;
1280 else if (allBusy || (someBusy && someOffline))
1281 newStatus = vl_busy;
1282 else if (allOffline)
1283 newStatus = vl_offline;
1285 newStatus = vl_online;
1287 if (statep->ID && statep->state != newStatus)
1288 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1290 statep->state = newStatus;
1294 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1297 if (volp->vol[RWVOL].ID == volID) {
1298 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1299 } else if (volp->vol[ROVOL].ID == volID) {
1300 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1301 } else if (volp->vol[BACKVOL].ID == volID) {
1302 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1305 * If we are called with volID == 0 then something has gone wrong.
1306 * Most likely a race occurred in the server volume list maintenance.
1307 * Since we don't know which volume's status should be updated,
1308 * just update all of them that are known to exist. Better to be
1309 * correct than fast.
1312 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1313 if (volp->vol[volType].ID != 0)
1314 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1320 ** Finds all volumes that reside on this server and reorders their
1321 ** RO list according to the changed rank of server.
1323 void cm_ChangeRankVolume(cm_server_t *tsp)
1329 /* find volumes which might have RO copy on server*/
1330 lock_ObtainRead(&cm_volumeLock);
1331 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1333 code = 1 ; /* assume that list is unchanged */
1334 InterlockedIncrement(&volp->refCount);
1335 lock_ReleaseRead(&cm_volumeLock);
1336 lock_ObtainWrite(&volp->rw);
1338 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1339 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1341 /* this volume list was changed */
1343 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1345 lock_ReleaseWrite(&volp->rw);
1346 lock_ObtainRead(&cm_volumeLock);
1347 refCount = InterlockedDecrement(&volp->refCount);
1348 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1350 lock_ReleaseRead(&cm_volumeLock);
1353 /* dump all volumes that have reference count > 0 to a file.
1354 * cookie is used to identify this batch for easy parsing,
1355 * and it a string provided by a caller
1357 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1364 lock_ObtainRead(&cm_scacheLock);
1365 lock_ObtainRead(&cm_volumeLock);
1368 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1369 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1371 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1373 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1374 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1376 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1378 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1379 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1382 lock_ReleaseRead(&cm_volumeLock);
1383 lock_ReleaseRead(&cm_scacheLock);
1390 * String hash function used by SDBM project.
1391 * It was chosen because it is fast and provides
1394 afs_uint32 SDBMHash(const char * str)
1396 afs_uint32 hash = 0;
1402 for(i = 0, len = strlen(str); i < len; i++)
1404 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1407 return (hash & 0x7FFFFFFF);
1410 /* call with volume write-locked and mutex held */
1411 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1415 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1418 i = CM_VOLUME_NAME_HASH(volp->namep);
1420 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1421 cm_data.volumeNameHashTablep[i] = volp;
1422 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1425 /* call with volume write-locked and mutex held */
1426 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1428 cm_volume_t **lvolpp;
1432 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1433 /* hash it out first */
1434 i = CM_VOLUME_NAME_HASH(volp->namep);
1435 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1437 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1438 if (tvolp == volp) {
1439 *lvolpp = volp->nameNextp;
1440 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1441 volp->nameNextp = NULL;
1448 /* call with volume write-locked and mutex held */
1449 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1452 struct cm_vol_state * statep;
1454 statep = cm_VolumeStateByType(volp, volType);
1456 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1459 i = CM_VOLUME_ID_HASH(statep->ID);
1463 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1464 cm_data.volumeRWIDHashTablep[i] = volp;
1467 statep->nextp = cm_data.volumeROIDHashTablep[i];
1468 cm_data.volumeROIDHashTablep[i] = volp;
1471 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1472 cm_data.volumeBKIDHashTablep[i] = volp;
1475 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1479 /* call with volume write-locked and mutex held */
1480 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1482 cm_volume_t **lvolpp;
1484 struct cm_vol_state * statep;
1487 statep = cm_VolumeStateByType(volp, volType);
1489 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1490 /* hash it out first */
1491 i = CM_VOLUME_ID_HASH(statep->ID);
1495 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1496 tvolp = cm_data.volumeRWIDHashTablep[i];
1499 lvolpp = &cm_data.volumeROIDHashTablep[i];
1500 tvolp = cm_data.volumeROIDHashTablep[i];
1503 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1504 tvolp = cm_data.volumeBKIDHashTablep[i];
1507 osi_assertx(0, "invalid volume type");
1510 if (tvolp == volp) {
1511 *lvolpp = statep->nextp;
1512 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1513 statep->nextp = NULL;
1517 lvolpp = &tvolp->vol[volType].nextp;
1518 tvolp = tvolp->vol[volType].nextp;
1523 /* must be called with cm_volumeLock write-locked! */
1524 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1526 if (volp == cm_data.volumeLRULastp)
1527 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1528 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1529 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1530 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1531 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1532 if (!cm_data.volumeLRULastp)
1533 cm_data.volumeLRULastp = volp;
1536 /* must be called with cm_volumeLock write-locked! */
1537 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1539 if (volp == cm_data.volumeLRULastp)
1542 if (volp == cm_data.volumeLRUFirstp)
1543 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1544 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1545 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1546 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1547 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1548 if (!cm_data.volumeLRULastp)
1549 cm_data.volumeLRULastp = volp;
1552 /* must be called with cm_volumeLock write-locked! */
1553 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1555 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1556 if (volp == cm_data.volumeLRULastp)
1557 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1558 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1559 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1563 static char * volstatus_str(enum volstatus vs)
1579 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1581 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1584 if (volID == volp->vol[RWVOL].ID)
1586 else if (volID == volp->vol[ROVOL].ID)
1588 else if (volID == volp->vol[BACKVOL].ID)
1592 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1594 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1595 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1597 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1600 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1602 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1604 return statep->state;
1609 /* Renew .readonly volume callbacks that are more than
1610 * 30 minutes old. (A volume callback is issued for 2 hours.)
1613 cm_VolumeRenewROCallbacks(void)
1616 time_t minexp = time(NULL) + 90 * 60;
1618 lock_ObtainRead(&cm_volumeLock);
1619 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1620 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1625 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1629 lock_ReleaseRead(&cm_volumeLock);
1630 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1631 lock_ObtainWrite(&scp->rw);
1632 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1633 lock_ReleaseWrite(&scp->rw);
1634 cm_ReleaseSCache(scp);
1636 lock_ObtainRead(&cm_volumeLock);
1639 lock_ReleaseRead(&cm_volumeLock);
1643 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1645 return &volp->vol[volType];
1649 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1651 cm_vol_state_t * statep = NULL;
1653 if (id == volp->vol[RWVOL].ID)
1654 statep = &volp->vol[RWVOL];
1655 else if (id == volp->vol[ROVOL].ID)
1656 statep = &volp->vol[ROVOL];
1657 else if (id == volp->vol[BACKVOL].ID)
1658 statep = &volp->vol[BACKVOL];
1664 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1666 size_t len = strlen(volname);
1667 cm_vol_state_t *statep;
1669 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1670 statep = &volp->vol[ROVOL];
1671 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1672 statep = &volp->vol[BACKVOL];
1674 statep = &volp->vol[RWVOL];