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,
168 cm_serverRef_t *tsrp;
170 struct sockaddr_in tsockAddr;
173 struct vldbentry vldbEntry;
174 struct nvldbentry nvldbEntry;
176 struct uvldbentry uvldbEntry;
181 enum volstatus rwNewstate = vl_online;
182 enum volstatus roNewstate = vl_online;
183 enum volstatus bkNewstate = vl_online;
184 #ifdef AFS_FREELANCE_CLIENT
189 lock_AssertWrite(&volp->rw);
191 #ifdef AFS_FREELANCE_CLIENT
192 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
195 memset(&vldbEntry, 0, sizeof(vldbEntry));
196 vldbEntry.flags |= VLF_RWEXISTS;
197 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
203 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
204 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
205 volp->cellp->name, volp->namep, volp->flags);
206 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
207 lock_ObtainWrite(&volp->rw);
208 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
209 volp->cellp->name, volp->namep, volp->flags);
210 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
211 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
212 volp->cellp->name, volp->namep, volp->flags);
213 osi_Wakeup((LONG_PTR) &volp->flags);
218 /* clear out old bindings */
219 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
220 if (volp->vol[volType].serversp)
221 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
224 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
225 lock_ReleaseWrite(&volp->rw);
227 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
228 cm_UpdateCell(cellp, 0);
230 /* now we have volume structure locked and held; make RPC to fill it */
231 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
232 osi_LogSaveString(afsd_logp,volp->cellp->name),
233 osi_LogSaveString(afsd_logp,volp->namep));
235 struct rx_connection * rxconnp;
237 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
241 rxconnp = cm_GetRxConn(connp);
243 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
245 if ( code == RXGEN_OPCODE )
248 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
251 if ( code == RXGEN_OPCODE ) {
252 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
255 rx_PutConnection(rxconnp);
256 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
257 code = cm_MapVLRPCError(code, reqp);
259 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
260 osi_LogSaveString(afsd_logp,volp->cellp->name),
261 osi_LogSaveString(afsd_logp,volp->namep), code);
263 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
264 osi_LogSaveString(afsd_logp,volp->cellp->name),
265 osi_LogSaveString(afsd_logp,volp->namep));
268 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
269 * does not exist but there might exist a .readonly volume. If the base name
270 * doesn't exist we will not care about the .backup that might be left behind
271 * since there should be no method to access it.
273 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
274 char name[VL_MAXNAMELEN];
276 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
278 /* now we have volume structure locked and held; make RPC to fill it */
279 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
280 osi_LogSaveString(afsd_logp,volp->cellp->name),
281 osi_LogSaveString(afsd_logp,name));
283 struct rx_connection * rxconnp;
285 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
289 rxconnp = cm_GetRxConn(connp);
291 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
293 if ( code == RXGEN_OPCODE )
296 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
299 if ( code == RXGEN_OPCODE ) {
300 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
303 rx_PutConnection(rxconnp);
304 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
305 code = cm_MapVLRPCError(code, reqp);
307 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
308 osi_LogSaveString(afsd_logp,volp->cellp->name),
309 osi_LogSaveString(afsd_logp,name), code);
311 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
312 osi_LogSaveString(afsd_logp,volp->cellp->name),
313 osi_LogSaveString(afsd_logp,name));
316 lock_ObtainWrite(&volp->rw);
323 afs_int32 serverNumber[NMAXNSERVERS];
324 afs_int32 serverFlags[NMAXNSERVERS];
325 afsUUID serverUUID[NMAXNSERVERS];
326 afs_int32 rwServers_alldown = 1;
327 afs_int32 roServers_alldown = 1;
328 afs_int32 bkServers_alldown = 1;
329 char name[VL_MAXNAMELEN];
331 #ifdef AFS_FREELANCE_CLIENT
333 rwServers_alldown = 0;
336 memset(serverUUID, 0, sizeof(serverUUID));
340 flags = vldbEntry.flags;
341 nServers = vldbEntry.nServers;
342 rwID = vldbEntry.volumeId[0];
343 roID = vldbEntry.volumeId[1];
344 bkID = vldbEntry.volumeId[2];
345 for ( i=0; i<nServers; i++ ) {
346 serverFlags[i] = vldbEntry.serverFlags[i];
347 serverNumber[i] = vldbEntry.serverNumber[i];
349 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
350 name[VL_MAXNAMELEN - 1] = '\0';
353 flags = nvldbEntry.flags;
354 nServers = nvldbEntry.nServers;
355 rwID = nvldbEntry.volumeId[0];
356 roID = nvldbEntry.volumeId[1];
357 bkID = nvldbEntry.volumeId[2];
358 for ( i=0; i<nServers; i++ ) {
359 serverFlags[i] = nvldbEntry.serverFlags[i];
360 serverNumber[i] = nvldbEntry.serverNumber[i];
362 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
363 name[VL_MAXNAMELEN - 1] = '\0';
367 flags = uvldbEntry.flags;
368 nServers = uvldbEntry.nServers;
369 rwID = uvldbEntry.volumeId[0];
370 roID = uvldbEntry.volumeId[1];
371 bkID = uvldbEntry.volumeId[2];
372 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
373 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
374 serverFlags[j] = uvldbEntry.serverFlags[i];
375 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
378 afs_uint32 * addrp, nentries, code, unique;
380 ListAddrByAttributes attrs;
383 memset((char *)&attrs, 0, sizeof(attrs));
384 attrs.Mask = VLADDR_UUID;
385 attrs.uuid = uvldbEntry.serverNumber[i];
386 memset((char *)&uuid, 0, sizeof(uuid));
387 memset((char *)&addrs, 0, sizeof(addrs));
390 struct rx_connection *rxconnp;
392 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
396 rxconnp = cm_GetRxConn(connp);
397 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
398 rx_PutConnection(rxconnp);
399 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
402 code = cm_MapVLRPCError(code, reqp);
403 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
407 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
409 addrp = addrs.bulkaddrs_val;
410 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
411 serverFlags[j] = uvldbEntry.serverFlags[i];
412 serverNumber[j] = addrp[k];
413 serverUUID[j] = uuid;
416 xdr_free(addrs.bulkaddrs_val, addrs.bulkaddrs_len * sizeof(*addrs.bulkaddrs_val));
419 code = CM_ERROR_INVAL;
422 nServers = j; /* update the server count */
423 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
424 name[VL_MAXNAMELEN - 1] = '\0';
429 /* decode the response */
430 lock_ObtainWrite(&cm_volumeLock);
431 if (cm_VolNameIsID(volp->namep)) {
436 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
437 name[len - 7] = '\0';
438 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
439 name[len - 9] = '\0';
442 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
443 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
445 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
446 cm_RemoveVolumeFromNameHashTable(volp);
448 strcpy(volp->namep, name);
450 cm_AddVolumeToNameHashTable(volp);
453 if (flags & VLF_RWEXISTS) {
454 if (volp->vol[RWVOL].ID != rwID) {
455 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
456 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
457 volp->vol[RWVOL].ID = rwID;
458 cm_AddVolumeToIDHashTable(volp, RWVOL);
461 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
462 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
463 volp->vol[RWVOL].ID = 0;
465 if (flags & VLF_ROEXISTS) {
466 if (volp->vol[ROVOL].ID != roID) {
467 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
468 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
469 volp->vol[ROVOL].ID = roID;
470 cm_AddVolumeToIDHashTable(volp, ROVOL);
473 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
474 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
475 volp->vol[ROVOL].ID = 0;
477 if (flags & VLF_BACKEXISTS) {
478 if (volp->vol[BACKVOL].ID != bkID) {
479 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
480 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
481 volp->vol[BACKVOL].ID = bkID;
482 cm_AddVolumeToIDHashTable(volp, BACKVOL);
485 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
486 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
487 volp->vol[BACKVOL].ID = 0;
489 lock_ReleaseWrite(&cm_volumeLock);
490 for (i=0; i<nServers; i++) {
491 /* create a server entry */
492 tflags = serverFlags[i];
493 if (tflags & VLSF_DONTUSE)
495 tsockAddr.sin_family = AF_INET;
496 tempAddr = htonl(serverNumber[i]);
497 tsockAddr.sin_addr.s_addr = tempAddr;
498 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
499 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
501 * Check to see if the uuid of the server we know at this address
502 * matches the uuid of the server we are being told about by the
503 * vlserver. If not, ...?
505 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
506 char uuid1[128], uuid2[128];
509 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
510 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
511 afs_inet_ntoa_r(serverNumber[i], hoststr);
513 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
514 osi_LogSaveString(afsd_logp, uuid1),
515 osi_LogSaveString(afsd_logp, uuid2),
516 osi_LogSaveString(afsd_logp, hoststr));
520 /* cm_NewServer will probe the server which in turn will
521 * update the state on the volume group object */
522 lock_ReleaseWrite(&volp->rw);
523 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
524 lock_ObtainWrite(&volp->rw);
526 osi_assertx(tsp != NULL, "null cm_server_t");
529 * if this server was created by fs setserverprefs
530 * then it won't have either a cell assignment or
535 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
536 !afs_uuid_is_nil(&serverUUID[i])) {
537 tsp->uuid = serverUUID[i];
538 tsp->flags |= CM_SERVERFLAG_UUID;
541 /* and add it to the list(s). */
543 * Each call to cm_NewServerRef() increments the
544 * ref count of tsp. These reference will be dropped,
545 * if and when the volume is reset; see reset code
546 * earlier in this function.
548 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
549 tsrp = cm_NewServerRef(tsp, rwID);
550 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
552 lock_ObtainWrite(&cm_serverLock);
553 tsrp->refCount--; /* drop allocation reference */
554 lock_ReleaseWrite(&cm_serverLock);
556 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
557 rwServers_alldown = 0;
559 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
560 tsrp = cm_NewServerRef(tsp, roID);
561 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
562 lock_ObtainWrite(&cm_serverLock);
563 tsrp->refCount--; /* drop allocation reference */
564 lock_ReleaseWrite(&cm_serverLock);
567 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
568 roServers_alldown = 0;
570 /* We don't use VLSF_BACKVOL !?! */
571 /* Because only the backup on the server holding the RW
572 * volume can be valid. This check prevents errors if a
573 * RW is moved but the old backup is not removed.
575 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
576 tsrp = cm_NewServerRef(tsp, bkID);
577 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
578 lock_ObtainWrite(&cm_serverLock);
579 tsrp->refCount--; /* drop allocation reference */
580 lock_ReleaseWrite(&cm_serverLock);
582 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
583 bkServers_alldown = 0;
585 /* Drop the reference obtained by cm_FindServer() */
592 * If the first n servers have the same ipRank, then we
593 * randomly pick one among them and move it to the beginning.
594 * We don't bother to re-order the whole list because
595 * the rest of the list is used only if the first server is
596 * down. We only do this for the RO list; we assume the other
597 * lists are length 1.
600 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
604 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
605 roNewstate = roServers_alldown ? vl_alldown : vl_online;
606 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
607 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
608 /* this volume does not exist - we should discard it */
609 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
610 cm_RemoveVolumeFromNameHashTable(volp);
611 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
612 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
613 cm_RemoveVolumeFromIDHashTable(volp, volType);
614 if (volp->vol[volType].ID) {
615 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
616 volp->vol[volType].ID = 0;
618 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
621 /* Move to the end so it will be recycled first */
622 cm_MoveVolumeToLRULast(volp);
624 volp->namep[0] ='\0';
626 rwNewstate = roNewstate = bkNewstate = vl_alldown;
629 if (volp->vol[RWVOL].state != rwNewstate) {
630 if (volp->vol[RWVOL].ID)
631 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
632 volp->vol[RWVOL].state = rwNewstate;
634 if (volp->vol[ROVOL].state != roNewstate) {
635 if (volp->vol[ROVOL].ID)
636 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
637 volp->vol[ROVOL].state = roNewstate;
639 if (volp->vol[BACKVOL].state != bkNewstate) {
640 if (volp->vol[BACKVOL].ID)
641 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
642 volp->vol[BACKVOL].state = bkNewstate;
646 volp->flags &= ~CM_VOLUMEFLAG_RESET;
648 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
649 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
650 osi_LogSaveString(afsd_logp,volp->cellp->name),
651 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
652 osi_Wakeup((LONG_PTR) &volp->flags);
657 /* Requires read or write lock on cm_volumeLock */
658 void cm_GetVolume(cm_volume_t *volp)
660 InterlockedIncrement(&volp->refCount);
663 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
668 lock_ObtainRead(&cm_volumeLock);
669 hash = CM_VOLUME_ID_HASH(fidp->volume);
670 /* The volumeID can be any one of the three types. So we must
671 * search the hash table for all three types until we find it.
672 * We will search in the order of RO, RW, BK.
674 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
675 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
680 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
681 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
687 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
688 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
693 /* hold the volume if we found it */
697 lock_ReleaseRead(&cm_volumeLock);
701 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
702 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
705 #ifdef SEARCH_ALL_VOLUMES
708 char volNameString[VL_MAXNAMELEN];
712 lock_ObtainRead(&cm_volumeLock);
713 #ifdef SEARCH_ALL_VOLUMES
714 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
715 if (cellp == volp->cellp &&
716 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
717 (unsigned) volumeID == volp->vol[ROVOL].ID ||
718 (unsigned) volumeID == volp->vol[BACKVOL].ID))
723 #endif /* SEARCH_ALL_VOLUMES */
725 hash = CM_VOLUME_ID_HASH(volumeID);
726 /* The volumeID can be any one of the three types. So we must
727 * search the hash table for all three types until we find it.
728 * We will search in the order of RO, RW, BK.
730 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
731 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
736 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
737 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
743 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
744 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
749 #ifdef SEARCH_ALL_VOLUMES
750 osi_assertx(volp == volp2, "unexpected cm_vol_t");
753 /* hold the volume if we found it */
757 lock_ReleaseRead(&cm_volumeLock);
761 lock_ObtainWrite(&volp->rw);
764 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
765 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
767 lock_ReleaseWrite(&volp->rw);
771 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
772 lock_ObtainWrite(&cm_volumeLock);
773 cm_AdjustVolumeLRU(volp);
774 lock_ReleaseWrite(&cm_volumeLock);
777 lock_ObtainRead(&cm_volumeLock);
779 lock_ReleaseRead(&cm_volumeLock);
784 /* otherwise, we didn't find it so consult the VLDB */
785 sprintf(volNameString, "%u", volumeID);
786 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
787 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
789 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
790 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
791 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
794 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
795 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
802 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
803 struct cm_user *userp, struct cm_req *reqp,
804 afs_uint32 flags, cm_volume_t **outVolpp)
807 #ifdef SEARCH_ALL_VOLUMES
811 char name[VL_MAXNAMELEN];
816 strncpy(name, volumeNamep, VL_MAXNAMELEN);
817 name[VL_MAXNAMELEN-1] = '\0';
820 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
822 name[len - 7] = '\0';
823 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
825 name[len - 9] = '\0';
830 lock_ObtainRead(&cm_volumeLock);
831 #ifdef SEARCH_ALL_VOLUMES
832 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
833 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
838 #endif /* SEARCH_ALL_VOLUMES */
840 hash = CM_VOLUME_NAME_HASH(name);
841 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
842 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
846 #ifdef SEARCH_ALL_VOLUMES
847 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
850 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
852 /* otherwise, get from VLDB */
855 * Change to a write lock so that we have exclusive use of
856 * the first cm_volume_t with a refCount of 0 so that we
857 * have time to increment it.
859 lock_ConvertRToW(&cm_volumeLock);
861 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
862 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
863 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
864 if ( volp->refCount == 0 ) {
865 /* There is one we can re-use */
870 for ( volp = cm_data.volumeLRULastp;
872 volp = (cm_volume_t *) osi_QPrev(&volp->q))
874 if ( volp->refCount == 0 ) {
875 /* There is one we can re-use */
881 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
883 InterlockedIncrement(&volp->refCount);
884 lock_ReleaseWrite(&cm_volumeLock);
885 lock_ObtainWrite(&volp->rw);
886 lock_ObtainWrite(&cm_volumeLock);
888 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
889 volp->cellp->name, volp->namep);
891 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
892 cm_RemoveVolumeFromLRU(volp);
893 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
894 cm_RemoveVolumeFromNameHashTable(volp);
896 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
897 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
898 cm_RemoveVolumeFromIDHashTable(volp, volType);
899 if (volp->vol[volType].ID)
900 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
901 volp->vol[volType].ID = 0;
902 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
903 lock_ReleaseWrite(&cm_volumeLock);
904 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
905 lock_ObtainWrite(&cm_volumeLock);
908 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
909 memset(volp, 0, sizeof(cm_volume_t));
910 volp->magic = CM_VOLUME_MAGIC;
911 volp->allNextp = cm_data.allVolumesp;
912 cm_data.allVolumesp = volp;
913 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
914 lock_ReleaseWrite(&cm_volumeLock);
915 lock_ObtainWrite(&volp->rw);
916 lock_ObtainWrite(&cm_volumeLock);
917 volp->refCount = 1; /* starts off held */
920 strncpy(volp->namep, name, VL_MAXNAMELEN);
921 volp->namep[VL_MAXNAMELEN-1] = '\0';
922 volp->flags = CM_VOLUMEFLAG_RESET;
924 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
925 volp->vol[volType].state = vl_unknown;
926 volp->vol[volType].nextp = NULL;
927 volp->vol[volType].flags = 0;
929 volp->cbExpiresRO = 0;
930 cm_AddVolumeToNameHashTable(volp);
931 lock_ReleaseWrite(&cm_volumeLock);
936 lock_ReleaseRead(&cm_volumeLock);
939 return CM_ERROR_NOSUCHVOLUME;
941 lock_ObtainWrite(&volp->rw);
944 /* if we get here we are holding the mutex */
945 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
946 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
948 lock_ReleaseWrite(&volp->rw);
950 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
951 type == ROVOL && volp->vol[ROVOL].ID == 0))
952 code = CM_ERROR_NOSUCHVOLUME;
957 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
958 lock_ObtainWrite(&cm_volumeLock);
959 cm_AdjustVolumeLRU(volp);
960 lock_ReleaseWrite(&cm_volumeLock);
963 lock_ObtainRead(&cm_volumeLock);
965 lock_ReleaseRead(&cm_volumeLock);
968 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
969 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
970 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
973 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
974 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
981 * Only call this function in response to a VNOVOL or VMOVED error
982 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
983 * as that can lead to recursive calls.
985 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
989 #ifdef SEARCH_ALL_VOLUMES
996 return CM_ERROR_INVAL;
998 cellp = cm_FindCellByID(fidp->cell, 0);
1000 return CM_ERROR_NOSUCHCELL;
1002 /* search for the volume */
1003 lock_ObtainRead(&cm_volumeLock);
1004 #ifdef SEARCH_ALL_VOLUMES
1005 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1006 if (cellp == volp->cellp &&
1007 (fidp->volume == volp->vol[RWVOL].ID ||
1008 fidp->volume == volp->vol[ROVOL].ID ||
1009 fidp->volume == volp->vol[BACKVOL].ID))
1012 #endif /* SEARCH_ALL_VOLUMES */
1014 hash = CM_VOLUME_ID_HASH(fidp->volume);
1015 /* The volumeID can be any one of the three types. So we must
1016 * search the hash table for all three types until we find it.
1017 * We will search in the order of RO, RW, BK.
1019 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1020 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1024 /* try RW volumes */
1025 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1026 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1031 /* try BK volumes */
1032 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1033 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1038 #ifdef SEARCH_ALL_VOLUMES
1039 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1041 /* hold the volume if we found it */
1045 lock_ReleaseRead(&cm_volumeLock);
1048 return CM_ERROR_NOSUCHVOLUME;
1051 cm_data.mountRootGen = time(NULL);
1052 lock_ObtainWrite(&volp->rw);
1053 volp->flags |= CM_VOLUMEFLAG_RESET;
1055 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1056 lock_ReleaseWrite(&volp->rw);
1058 lock_ObtainRead(&cm_volumeLock);
1060 lock_ReleaseRead(&cm_volumeLock);
1065 /* find the appropriate servers from a volume */
1066 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1068 cm_serverRef_t **serverspp;
1069 cm_serverRef_t *current;
1073 lock_ObtainWrite(&cm_serverLock);
1075 if (volume == volp->vol[RWVOL].ID)
1076 serverspp = &volp->vol[RWVOL].serversp;
1077 else if (volume == volp->vol[ROVOL].ID)
1078 serverspp = &volp->vol[ROVOL].serversp;
1079 else if (volume == volp->vol[BACKVOL].ID)
1080 serverspp = &volp->vol[BACKVOL].serversp;
1082 lock_ReleaseWrite(&cm_serverLock);
1086 lock_ObtainWrite(&volp->rw);
1087 volp->flags |= CM_VOLUMEFLAG_RESET;
1088 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1089 lock_ReleaseWrite(&volp->rw);
1097 * Increment the refCount on deleted items as well.
1098 * They will be freed by cm_FreeServerList when they get to zero
1100 for (current = *serverspp; current; current = current->next)
1101 current->refCount++;
1103 lock_ReleaseWrite(&cm_serverLock);
1108 void cm_PutVolume(cm_volume_t *volp)
1110 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1111 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1114 /* return the read-only volume, if there is one, or the read-write volume if
1117 long cm_GetROVolumeID(cm_volume_t *volp)
1121 lock_ObtainRead(&volp->rw);
1122 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1123 id = volp->vol[ROVOL].ID;
1125 id = volp->vol[RWVOL].ID;
1126 lock_ReleaseRead(&volp->rw);
1131 void cm_RefreshVolumes(void)
1137 cm_data.mountRootGen = time(NULL);
1139 /* force a re-loading of volume data from the vldb */
1140 lock_ObtainRead(&cm_volumeLock);
1141 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1142 InterlockedIncrement(&volp->refCount);
1143 lock_ReleaseRead(&cm_volumeLock);
1145 lock_ObtainWrite(&volp->rw);
1146 volp->flags |= CM_VOLUMEFLAG_RESET;
1147 lock_ReleaseWrite(&volp->rw);
1149 lock_ObtainRead(&cm_volumeLock);
1150 refCount = InterlockedDecrement(&volp->refCount);
1151 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1153 lock_ReleaseRead(&cm_volumeLock);
1155 /* force mount points to be re-evaluated so that
1156 * if the volume location has changed we will pick
1159 for ( scp = cm_data.scacheLRUFirstp;
1161 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1162 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1163 #ifdef AFS_FREELANCE_CLIENT
1164 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1167 lock_ObtainWrite(&scp->rw);
1168 scp->mountPointStringp[0] = '\0';
1169 lock_ReleaseWrite(&scp->rw);
1176 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1177 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1181 AFSFetchVolumeStatus volStat;
1186 struct rx_connection * rxconnp;
1188 char offLineMsg[256];
1190 long alldown, alldeleted;
1191 cm_serverRef_t *serversp;
1194 OfflineMsg = offLineMsg;
1197 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1198 if (!statep->serversp && !(*volumeUpdatedp)) {
1200 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1201 *volumeUpdatedp = 1;
1204 if (statep->serversp) {
1207 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1208 if (serversp->status == srv_deleted)
1215 if (serversp->status == srv_busy || serversp->status == srv_offline)
1216 serversp->status = srv_not_busy;
1219 if (alldeleted && !(*volumeUpdatedp)) {
1221 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1222 *volumeUpdatedp = 1;
1225 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1226 (!alldown && statep->state == vl_alldown)) {
1229 lock_ReleaseWrite(&volp->rw);
1231 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1235 rxconnp = cm_GetRxConn(connp);
1236 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1237 &volStat, &Name, &OfflineMsg, &MOTD);
1238 rx_PutConnection(rxconnp);
1240 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1241 code = cm_MapRPCError(code, &req);
1243 lock_ObtainWrite(&volp->rw);
1244 if (code == 0 && volStat.Online) {
1245 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1246 statep->state = vl_online;
1248 } else if (code == CM_ERROR_NOACCESS) {
1249 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1250 statep->state = vl_unknown;
1253 } else if (alldown && statep->state != vl_alldown) {
1254 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1255 statep->state = vl_alldown;
1257 } else if (statep->state != vl_alldown) {
1258 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1259 statep->state = vl_alldown;
1264 /* The return code is 0 if the volume is not online and
1265 * 1 if the volume is online
1268 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1272 afs_uint32 online = 0;
1273 afs_uint32 volumeUpdated = 0;
1275 lock_ObtainWrite(&volp->rw);
1277 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1279 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1283 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1284 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1285 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1287 lock_ReleaseWrite(&volp->rw);
1292 /* called from the Daemon thread */
1293 void cm_CheckOfflineVolumes(void)
1298 lock_ObtainRead(&cm_volumeLock);
1299 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1300 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1301 InterlockedIncrement(&volp->refCount);
1302 lock_ReleaseRead(&cm_volumeLock);
1303 cm_CheckOfflineVolume(volp, 0);
1304 lock_ObtainRead(&cm_volumeLock);
1305 refCount = InterlockedDecrement(&volp->refCount);
1306 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1309 lock_ReleaseRead(&cm_volumeLock);
1314 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1316 enum volstatus newStatus;
1317 cm_serverRef_t *tsrp;
1319 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1322 if (!volp || !statep) {
1329 lock_ObtainWrite(&cm_serverLock);
1330 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1332 sprintf(addr, "%d.%d.%d.%d",
1333 ((tsp->addr.sin_addr.s_addr & 0xff)),
1334 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1335 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1336 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1338 if (tsrp->status == srv_deleted) {
1339 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1340 statep->ID, osi_LogSaveString(afsd_logp,addr));
1344 cm_GetServerNoLock(tsp);
1345 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1347 if (tsrp->status == srv_busy) {
1348 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1349 statep->ID, osi_LogSaveString(afsd_logp,addr));
1352 } else if (tsrp->status == srv_offline) {
1353 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1354 statep->ID, osi_LogSaveString(afsd_logp,addr));
1358 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1359 statep->ID, osi_LogSaveString(afsd_logp,addr));
1364 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1365 statep->ID, osi_LogSaveString(afsd_logp,addr));
1367 cm_PutServerNoLock(tsp);
1370 lock_ReleaseWrite(&cm_serverLock);
1372 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1373 allDown, allBusy, someBusy, someOffline, allOffline);
1376 newStatus = vl_alldown;
1377 else if (allBusy || (someBusy && someOffline))
1378 newStatus = vl_busy;
1379 else if (allOffline)
1380 newStatus = vl_offline;
1382 newStatus = vl_online;
1384 if (statep->ID && statep->state != newStatus)
1385 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1387 statep->state = newStatus;
1391 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1394 if (volp->vol[RWVOL].ID == volID) {
1395 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1396 } else if (volp->vol[ROVOL].ID == volID) {
1397 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1398 } else if (volp->vol[BACKVOL].ID == volID) {
1399 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1402 * If we are called with volID == 0 then something has gone wrong.
1403 * Most likely a race occurred in the server volume list maintenance.
1404 * Since we don't know which volume's status should be updated,
1405 * just update all of them that are known to exist. Better to be
1406 * correct than fast.
1409 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1410 if (volp->vol[volType].ID != 0)
1411 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1417 ** Finds all volumes that reside on this server and reorders their
1418 ** RO list according to the changed rank of server.
1420 void cm_ChangeRankVolume(cm_server_t *tsp)
1426 /* find volumes which might have RO copy on server*/
1427 lock_ObtainRead(&cm_volumeLock);
1428 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1430 code = 1 ; /* assume that list is unchanged */
1431 InterlockedIncrement(&volp->refCount);
1432 lock_ReleaseRead(&cm_volumeLock);
1433 lock_ObtainWrite(&volp->rw);
1435 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1436 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1438 /* this volume list was changed */
1440 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1442 lock_ReleaseWrite(&volp->rw);
1443 lock_ObtainRead(&cm_volumeLock);
1444 refCount = InterlockedDecrement(&volp->refCount);
1445 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1447 lock_ReleaseRead(&cm_volumeLock);
1450 /* dump all volumes that have reference count > 0 to a file.
1451 * cookie is used to identify this batch for easy parsing,
1452 * and it a string provided by a caller
1454 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1461 lock_ObtainRead(&cm_scacheLock);
1462 lock_ObtainRead(&cm_volumeLock);
1465 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1466 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1468 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1470 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1471 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1473 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1475 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1476 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1479 lock_ReleaseRead(&cm_volumeLock);
1480 lock_ReleaseRead(&cm_scacheLock);
1487 * String hash function used by SDBM project.
1488 * It was chosen because it is fast and provides
1491 afs_uint32 SDBMHash(const char * str)
1493 afs_uint32 hash = 0;
1499 for(i = 0, len = strlen(str); i < len; i++)
1501 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1504 return (hash & 0x7FFFFFFF);
1507 /* call with volume write-locked and mutex held */
1508 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1512 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1515 i = CM_VOLUME_NAME_HASH(volp->namep);
1517 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1518 cm_data.volumeNameHashTablep[i] = volp;
1519 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1522 /* call with volume write-locked and mutex held */
1523 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1525 cm_volume_t **lvolpp;
1529 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1530 /* hash it out first */
1531 i = CM_VOLUME_NAME_HASH(volp->namep);
1532 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1534 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1535 if (tvolp == volp) {
1536 *lvolpp = volp->nameNextp;
1537 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1538 volp->nameNextp = NULL;
1545 /* call with volume write-locked and mutex held */
1546 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1549 struct cm_vol_state * statep;
1551 statep = cm_VolumeStateByType(volp, volType);
1553 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1556 i = CM_VOLUME_ID_HASH(statep->ID);
1560 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1561 cm_data.volumeRWIDHashTablep[i] = volp;
1564 statep->nextp = cm_data.volumeROIDHashTablep[i];
1565 cm_data.volumeROIDHashTablep[i] = volp;
1568 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1569 cm_data.volumeBKIDHashTablep[i] = volp;
1572 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1576 /* call with volume write-locked and mutex held */
1577 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1579 cm_volume_t **lvolpp;
1581 struct cm_vol_state * statep;
1584 statep = cm_VolumeStateByType(volp, volType);
1586 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1587 /* hash it out first */
1588 i = CM_VOLUME_ID_HASH(statep->ID);
1592 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1593 tvolp = cm_data.volumeRWIDHashTablep[i];
1596 lvolpp = &cm_data.volumeROIDHashTablep[i];
1597 tvolp = cm_data.volumeROIDHashTablep[i];
1600 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1601 tvolp = cm_data.volumeBKIDHashTablep[i];
1604 osi_assertx(0, "invalid volume type");
1607 if (tvolp == volp) {
1608 *lvolpp = statep->nextp;
1609 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1610 statep->nextp = NULL;
1614 lvolpp = &tvolp->vol[volType].nextp;
1615 tvolp = tvolp->vol[volType].nextp;
1620 /* must be called with cm_volumeLock write-locked! */
1621 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1623 if (volp == cm_data.volumeLRULastp)
1624 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1625 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1626 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1627 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1628 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1629 if (!cm_data.volumeLRULastp)
1630 cm_data.volumeLRULastp = volp;
1633 /* must be called with cm_volumeLock write-locked! */
1634 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1636 if (volp == cm_data.volumeLRULastp)
1639 if (volp == cm_data.volumeLRUFirstp)
1640 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1641 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1642 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1643 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1644 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1645 if (!cm_data.volumeLRULastp)
1646 cm_data.volumeLRULastp = volp;
1649 /* must be called with cm_volumeLock write-locked! */
1650 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1652 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1653 if (volp == cm_data.volumeLRULastp)
1654 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1655 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1656 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1660 static char * volstatus_str(enum volstatus vs)
1676 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1678 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1681 if (volID == volp->vol[RWVOL].ID)
1683 else if (volID == volp->vol[ROVOL].ID)
1685 else if (volID == volp->vol[BACKVOL].ID)
1689 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1691 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1692 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1694 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1697 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1699 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1701 return statep->state;
1706 /* Renew .readonly volume callbacks that are more than
1707 * 30 minutes old. (A volume callback is issued for 2 hours.)
1710 cm_VolumeRenewROCallbacks(void)
1713 time_t minexp = time(NULL) + 90 * 60;
1715 lock_ObtainRead(&cm_volumeLock);
1716 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1717 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1722 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1726 lock_ReleaseRead(&cm_volumeLock);
1727 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1728 lock_ObtainWrite(&scp->rw);
1729 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1730 lock_ReleaseWrite(&scp->rw);
1731 cm_ReleaseSCache(scp);
1733 lock_ObtainRead(&cm_volumeLock);
1736 lock_ReleaseRead(&cm_volumeLock);
1740 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1742 return &volp->vol[volType];
1746 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1748 cm_vol_state_t * statep = NULL;
1750 if (id == volp->vol[RWVOL].ID)
1751 statep = &volp->vol[RWVOL];
1752 else if (id == volp->vol[ROVOL].ID)
1753 statep = &volp->vol[ROVOL];
1754 else if (id == volp->vol[BACKVOL].ID)
1755 statep = &volp->vol[BACKVOL];
1761 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1763 size_t len = strlen(volname);
1764 cm_vol_state_t *statep;
1766 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1767 statep = &volp->vol[ROVOL];
1768 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1769 statep = &volp->vol[BACKVOL];
1771 statep = &volp->vol[RWVOL];