2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afs/param.h>
22 osi_rwlock_t cm_volumeLock;
25 cm_ValidateVolume(void)
30 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
31 if ( volp->magic != CM_VOLUME_MAGIC ) {
32 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
33 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
36 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
37 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
38 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
41 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
42 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
43 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
46 if ( count != 0 && volp == cm_data.allVolumesp ||
47 count > cm_data.maxVolumes ) {
48 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
49 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
54 if ( count != cm_data.currentVolumes ) {
55 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
56 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
64 cm_ShutdownVolume(void)
68 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
70 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
71 if (volp->vol[volType].ID)
72 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
74 volp->cbExpiresRO = 0;
75 volp->cbServerpRO = NULL;
76 lock_FinalizeRWLock(&volp->rw);
82 void cm_InitVolume(int newFile, long maxVols)
84 static osi_once_t once;
86 if (osi_Once(&once)) {
87 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
90 cm_data.allVolumesp = NULL;
91 cm_data.currentVolumes = 0;
92 cm_data.maxVolumes = maxVols;
93 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
94 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
95 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
96 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
101 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
104 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
105 volp->flags |= CM_VOLUMEFLAG_RESET;
106 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
107 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
108 volp->vol[volType].state = vl_unknown;
109 volp->vol[volType].serversp = NULL;
110 if (volp->vol[volType].ID)
111 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
113 volp->cbExpiresRO = 0;
114 volp->cbServerpRO = NULL;
122 /* returns true if the id is a decimal integer, in which case we interpret it
123 * as an id. make the cache manager much simpler.
124 * Stolen from src/volser/vlprocs.c */
126 cm_VolNameIsID(char *aname)
129 while (tc = *aname++) {
130 if (tc > '9' || tc < '0')
138 * Update a volume. Caller holds a write lock on the volume (volp->rw).
141 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
142 * Yes, we support multihomed fileservers.
143 * Since before we got the code from IBM.
144 * But to find out about multiple addresses on a multihomed server, you need
145 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
146 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
147 * address per server.
148 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
149 * see src/afs/afs_volume.c, paying particular attention to
150 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
151 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
152 * thanks. The windows client calls the 0 versions.
153 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
155 * By not using the N versions, you only get up to 8 sites instead of 13.
156 * By not using the U versions, you don't get to know about multihomed serve
157 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
158 * Of course, you probably want to support the older versions for backward
159 * compatibility. If you do that, you need to call the newest interface
160 * first, and fall back to successively older versions if you get
164 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
170 cm_serverRef_t *tsrp;
172 struct sockaddr_in tsockAddr, tsockAddr2;
175 struct vldbentry vldbEntry;
176 struct nvldbentry nvldbEntry;
178 struct uvldbentry uvldbEntry;
183 enum volstatus rwNewstate = vl_online;
184 enum volstatus roNewstate = vl_online;
185 enum volstatus bkNewstate = vl_online;
186 #ifdef AFS_FREELANCE_CLIENT
191 lock_AssertWrite(&volp->rw);
193 #ifdef AFS_FREELANCE_CLIENT
194 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
197 memset(&vldbEntry, 0, sizeof(vldbEntry));
198 vldbEntry.flags |= VLF_RWEXISTS;
199 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
205 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
206 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
207 volp->cellp->name, volp->namep, volp->flags);
208 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
209 lock_ObtainWrite(&volp->rw);
210 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
211 volp->cellp->name, volp->namep, volp->flags);
212 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
213 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
214 volp->cellp->name, volp->namep, volp->flags);
215 osi_Wakeup((LONG_PTR) &volp->flags);
220 /* clear out old bindings */
221 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
222 if (volp->vol[volType].serversp)
223 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
226 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
227 lock_ReleaseWrite(&volp->rw);
229 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
230 cm_UpdateCell(cellp, 0);
232 /* now we have volume structure locked and held; make RPC to fill it */
233 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
234 osi_LogSaveString(afsd_logp,volp->cellp->name),
235 osi_LogSaveString(afsd_logp,volp->namep));
237 struct rx_connection * rxconnp;
239 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
243 rxconnp = cm_GetRxConn(connp);
245 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
247 if ( code == RXGEN_OPCODE )
250 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
253 if ( code == RXGEN_OPCODE ) {
254 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
257 rx_PutConnection(rxconnp);
258 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
259 code = cm_MapVLRPCError(code, reqp);
261 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
262 osi_LogSaveString(afsd_logp,volp->cellp->name),
263 osi_LogSaveString(afsd_logp,volp->namep), code);
265 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
266 osi_LogSaveString(afsd_logp,volp->cellp->name),
267 osi_LogSaveString(afsd_logp,volp->namep));
270 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
271 * does not exist but there might exist a .readonly volume. If the base name
272 * doesn't exist we will not care about the .backup that might be left behind
273 * since there should be no method to access it.
275 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
276 char name[VL_MAXNAMELEN];
278 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
280 /* now we have volume structure locked and held; make RPC to fill it */
281 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
282 osi_LogSaveString(afsd_logp,volp->cellp->name),
283 osi_LogSaveString(afsd_logp,name));
285 struct rx_connection * rxconnp;
287 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
291 rxconnp = cm_GetRxConn(connp);
293 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
295 if ( code == RXGEN_OPCODE )
298 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
301 if ( code == RXGEN_OPCODE ) {
302 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
305 rx_PutConnection(rxconnp);
306 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
307 code = cm_MapVLRPCError(code, reqp);
309 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
310 osi_LogSaveString(afsd_logp,volp->cellp->name),
311 osi_LogSaveString(afsd_logp,name), code);
313 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
314 osi_LogSaveString(afsd_logp,volp->cellp->name),
315 osi_LogSaveString(afsd_logp,name));
318 lock_ObtainWrite(&volp->rw);
325 afs_int32 serverNumber[NMAXNSERVERS];
326 afs_int32 serverFlags[NMAXNSERVERS];
327 afsUUID serverUUID[NMAXNSERVERS];
328 afs_int32 rwServers_alldown = 1;
329 afs_int32 roServers_alldown = 1;
330 afs_int32 bkServers_alldown = 1;
331 char name[VL_MAXNAMELEN];
333 #ifdef AFS_FREELANCE_CLIENT
335 rwServers_alldown = 0;
338 memset(serverUUID, 0, sizeof(serverUUID));
342 flags = vldbEntry.flags;
343 nServers = vldbEntry.nServers;
344 rwID = vldbEntry.volumeId[0];
345 roID = vldbEntry.volumeId[1];
346 bkID = vldbEntry.volumeId[2];
347 for ( i=0; i<nServers; i++ ) {
348 serverFlags[i] = vldbEntry.serverFlags[i];
349 serverNumber[i] = vldbEntry.serverNumber[i];
351 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
352 name[VL_MAXNAMELEN - 1] = '\0';
355 flags = nvldbEntry.flags;
356 nServers = nvldbEntry.nServers;
357 rwID = nvldbEntry.volumeId[0];
358 roID = nvldbEntry.volumeId[1];
359 bkID = nvldbEntry.volumeId[2];
360 for ( i=0; i<nServers; i++ ) {
361 serverFlags[i] = nvldbEntry.serverFlags[i];
362 serverNumber[i] = nvldbEntry.serverNumber[i];
364 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
365 name[VL_MAXNAMELEN - 1] = '\0';
369 flags = uvldbEntry.flags;
370 nServers = uvldbEntry.nServers;
371 rwID = uvldbEntry.volumeId[0];
372 roID = uvldbEntry.volumeId[1];
373 bkID = uvldbEntry.volumeId[2];
374 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
375 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
376 serverFlags[j] = uvldbEntry.serverFlags[i];
377 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
380 afs_uint32 * addrp, nentries, code, unique;
382 ListAddrByAttributes attrs;
385 memset((char *)&attrs, 0, sizeof(attrs));
386 attrs.Mask = VLADDR_UUID;
387 attrs.uuid = uvldbEntry.serverNumber[i];
388 memset((char *)&uuid, 0, sizeof(uuid));
389 memset((char *)&addrs, 0, sizeof(addrs));
392 struct rx_connection *rxconnp;
394 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
398 rxconnp = cm_GetRxConn(connp);
399 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
400 rx_PutConnection(rxconnp);
401 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
404 code = cm_MapVLRPCError(code, reqp);
405 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
409 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
411 addrp = addrs.bulkaddrs_val;
412 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
413 serverFlags[j] = uvldbEntry.serverFlags[i];
414 serverNumber[j] = addrp[k];
415 serverUUID[j] = uuid;
418 xdr_free(addrs.bulkaddrs_val, addrs.bulkaddrs_len * sizeof(*addrs.bulkaddrs_val));
421 code = CM_ERROR_INVAL;
424 nServers = j; /* update the server count */
425 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
426 name[VL_MAXNAMELEN - 1] = '\0';
431 /* decode the response */
432 lock_ObtainWrite(&cm_volumeLock);
433 if (cm_VolNameIsID(volp->namep)) {
438 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
439 name[len - 7] = '\0';
440 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
441 name[len - 9] = '\0';
444 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
445 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
447 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
448 cm_RemoveVolumeFromNameHashTable(volp);
450 strcpy(volp->namep, name);
452 cm_AddVolumeToNameHashTable(volp);
455 if (flags & VLF_DFSFILESET) {
456 volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
457 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
458 osi_LogSaveString(afsd_logp, volp->namep));
461 if (flags & VLF_RWEXISTS) {
462 if (volp->vol[RWVOL].ID != rwID) {
463 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
464 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
465 volp->vol[RWVOL].ID = rwID;
466 cm_AddVolumeToIDHashTable(volp, RWVOL);
469 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
470 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
471 volp->vol[RWVOL].ID = 0;
473 if (flags & VLF_ROEXISTS) {
474 if (volp->vol[ROVOL].ID != roID) {
475 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
476 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
477 volp->vol[ROVOL].ID = roID;
478 cm_AddVolumeToIDHashTable(volp, ROVOL);
481 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
482 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
483 volp->vol[ROVOL].ID = 0;
485 if (flags & VLF_BACKEXISTS) {
486 if (volp->vol[BACKVOL].ID != bkID) {
487 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
488 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
489 volp->vol[BACKVOL].ID = bkID;
490 cm_AddVolumeToIDHashTable(volp, BACKVOL);
493 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
494 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
495 volp->vol[BACKVOL].ID = 0;
497 lock_ReleaseWrite(&cm_volumeLock);
498 for (i=0; i<nServers; i++) {
499 /* create a server entry */
500 tflags = serverFlags[i];
501 if (tflags & VLSF_DONTUSE)
503 tsockAddr.sin_port = htons(7000);
504 tsockAddr.sin_family = AF_INET;
505 tempAddr = htonl(serverNumber[i]);
506 tsockAddr.sin_addr.s_addr = tempAddr;
507 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
508 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
510 * Check to see if the uuid of the server we know at this address
511 * matches the uuid of the server we are being told about by the
512 * vlserver. If not, ...?
514 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
515 char uuid1[128], uuid2[128];
518 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
519 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
520 afs_inet_ntoa_r(serverNumber[i], hoststr);
522 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
523 osi_LogSaveString(afsd_logp, uuid1),
524 osi_LogSaveString(afsd_logp, uuid2),
525 osi_LogSaveString(afsd_logp, hoststr));
529 lock_ReleaseWrite(&volp->rw);
531 if (cm_readonlyVolumeVersioning) {
532 tsockAddr2 = tsockAddr;
533 tsockAddr2.sin_port = htons(7005);
534 /* Do not probe the volserver. We will always use the file server's state. */
535 tsp = cm_NewServer(&tsockAddr2, CM_SERVER_VOL, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
536 cm_PutServer(tsp); /* no longer need to vol server reference */
539 /* cm_NewServer will probe the file server which in turn will
540 * update the state on the volume group object */
541 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
542 lock_ObtainWrite(&volp->rw);
544 osi_assertx(tsp != NULL, "null cm_server_t");
547 * if this server was created by fs setserverprefs
548 * then it won't have either a cell assignment or
553 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
554 !afs_uuid_is_nil(&serverUUID[i])) {
555 tsp->uuid = serverUUID[i];
556 tsp->flags |= CM_SERVERFLAG_UUID;
559 /* and add it to the list(s). */
561 * Each call to cm_NewServerRef() increments the
562 * ref count of tsp. These reference will be dropped,
563 * if and when the volume is reset; see reset code
564 * earlier in this function.
566 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
567 tsrp = cm_NewServerRef(tsp, rwID);
568 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
570 lock_ObtainWrite(&cm_serverLock);
571 tsrp->refCount--; /* drop allocation reference */
572 lock_ReleaseWrite(&cm_serverLock);
574 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
575 rwServers_alldown = 0;
577 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
578 tsrp = cm_NewServerRef(tsp, roID);
579 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
580 lock_ObtainWrite(&cm_serverLock);
581 tsrp->refCount--; /* drop allocation reference */
582 lock_ReleaseWrite(&cm_serverLock);
585 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
586 roServers_alldown = 0;
588 /* We don't use VLSF_BACKVOL !?! */
589 /* Because only the backup on the server holding the RW
590 * volume can be valid. This check prevents errors if a
591 * RW is moved but the old backup is not removed.
593 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
594 tsrp = cm_NewServerRef(tsp, bkID);
595 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
596 lock_ObtainWrite(&cm_serverLock);
597 tsrp->refCount--; /* drop allocation reference */
598 lock_ReleaseWrite(&cm_serverLock);
600 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
601 bkServers_alldown = 0;
603 /* Drop the reference obtained by cm_FindServer() */
610 * If the first n servers have the same ipRank, then we
611 * randomly pick one among them and move it to the beginning.
612 * We don't bother to re-order the whole list because
613 * the rest of the list is used only if the first server is
614 * down. We only do this for the RO list; we assume the other
615 * lists are length 1.
618 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
622 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
623 roNewstate = roServers_alldown ? vl_alldown : vl_online;
624 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
625 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
626 /* this volume does not exist - we should discard it */
627 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
628 cm_RemoveVolumeFromNameHashTable(volp);
629 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
630 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
631 cm_RemoveVolumeFromIDHashTable(volp, volType);
632 if (volp->vol[volType].ID) {
633 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
634 volp->vol[volType].ID = 0;
636 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
639 /* Move to the end so it will be recycled first */
640 cm_MoveVolumeToLRULast(volp);
642 volp->namep[0] ='\0';
644 rwNewstate = roNewstate = bkNewstate = vl_alldown;
647 if (volp->vol[RWVOL].state != rwNewstate) {
648 if (volp->vol[RWVOL].ID)
649 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
650 volp->vol[RWVOL].state = rwNewstate;
652 if (volp->vol[ROVOL].state != roNewstate) {
653 if (volp->vol[ROVOL].ID)
654 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
655 volp->vol[ROVOL].state = roNewstate;
657 if (volp->vol[BACKVOL].state != bkNewstate) {
658 if (volp->vol[BACKVOL].ID)
659 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
660 volp->vol[BACKVOL].state = bkNewstate;
664 volp->flags &= ~CM_VOLUMEFLAG_RESET;
666 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
667 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
668 osi_LogSaveString(afsd_logp,volp->cellp->name),
669 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
670 osi_Wakeup((LONG_PTR) &volp->flags);
675 /* Requires read or write lock on cm_volumeLock */
676 void cm_GetVolume(cm_volume_t *volp)
678 InterlockedIncrement(&volp->refCount);
681 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
686 lock_ObtainRead(&cm_volumeLock);
687 hash = CM_VOLUME_ID_HASH(fidp->volume);
688 /* The volumeID can be any one of the three types. So we must
689 * search the hash table for all three types until we find it.
690 * We will search in the order of RO, RW, BK.
692 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
693 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
698 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
699 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
705 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
706 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
711 /* hold the volume if we found it */
715 lock_ReleaseRead(&cm_volumeLock);
719 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
720 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
723 #ifdef SEARCH_ALL_VOLUMES
726 char volNameString[VL_MAXNAMELEN];
730 lock_ObtainRead(&cm_volumeLock);
731 #ifdef SEARCH_ALL_VOLUMES
732 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
733 if (cellp == volp->cellp &&
734 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
735 (unsigned) volumeID == volp->vol[ROVOL].ID ||
736 (unsigned) volumeID == volp->vol[BACKVOL].ID))
741 #endif /* SEARCH_ALL_VOLUMES */
743 hash = CM_VOLUME_ID_HASH(volumeID);
744 /* The volumeID can be any one of the three types. So we must
745 * search the hash table for all three types until we find it.
746 * We will search in the order of RO, RW, BK.
748 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
749 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
754 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
755 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
761 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
762 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
767 #ifdef SEARCH_ALL_VOLUMES
768 osi_assertx(volp == volp2, "unexpected cm_vol_t");
771 /* hold the volume if we found it */
775 lock_ReleaseRead(&cm_volumeLock);
779 lock_ObtainWrite(&volp->rw);
782 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
783 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
785 lock_ReleaseWrite(&volp->rw);
789 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
790 lock_ObtainWrite(&cm_volumeLock);
791 cm_AdjustVolumeLRU(volp);
792 lock_ReleaseWrite(&cm_volumeLock);
795 lock_ObtainRead(&cm_volumeLock);
797 lock_ReleaseRead(&cm_volumeLock);
802 /* otherwise, we didn't find it so consult the VLDB */
803 sprintf(volNameString, "%u", volumeID);
804 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
805 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
807 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
808 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
809 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
812 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
813 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
820 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
821 struct cm_user *userp, struct cm_req *reqp,
822 afs_uint32 flags, cm_volume_t **outVolpp)
825 #ifdef SEARCH_ALL_VOLUMES
829 char name[VL_MAXNAMELEN];
834 strncpy(name, volumeNamep, VL_MAXNAMELEN);
835 name[VL_MAXNAMELEN-1] = '\0';
838 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
840 name[len - 7] = '\0';
841 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
843 name[len - 9] = '\0';
848 lock_ObtainRead(&cm_volumeLock);
849 #ifdef SEARCH_ALL_VOLUMES
850 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
851 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
856 #endif /* SEARCH_ALL_VOLUMES */
858 hash = CM_VOLUME_NAME_HASH(name);
859 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
860 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
864 #ifdef SEARCH_ALL_VOLUMES
865 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
868 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
870 /* otherwise, get from VLDB */
873 * Change to a write lock so that we have exclusive use of
874 * the first cm_volume_t with a refCount of 0 so that we
875 * have time to increment it.
877 lock_ConvertRToW(&cm_volumeLock);
879 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
880 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
881 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
882 if ( volp->refCount == 0 ) {
883 /* There is one we can re-use */
888 for ( volp = cm_data.volumeLRULastp;
890 volp = (cm_volume_t *) osi_QPrev(&volp->q))
892 if ( volp->refCount == 0 ) {
893 /* There is one we can re-use */
899 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
901 InterlockedIncrement(&volp->refCount);
902 lock_ReleaseWrite(&cm_volumeLock);
903 lock_ObtainWrite(&volp->rw);
904 lock_ObtainWrite(&cm_volumeLock);
906 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
907 volp->cellp->name, volp->namep);
909 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
910 cm_RemoveVolumeFromLRU(volp);
911 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
912 cm_RemoveVolumeFromNameHashTable(volp);
914 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
915 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
916 cm_RemoveVolumeFromIDHashTable(volp, volType);
917 if (volp->vol[volType].ID)
918 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
919 volp->vol[volType].ID = 0;
920 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
921 lock_ReleaseWrite(&cm_volumeLock);
922 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
923 lock_ObtainWrite(&cm_volumeLock);
926 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
927 memset(volp, 0, sizeof(cm_volume_t));
928 volp->magic = CM_VOLUME_MAGIC;
929 volp->allNextp = cm_data.allVolumesp;
930 cm_data.allVolumesp = volp;
931 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
932 lock_ReleaseWrite(&cm_volumeLock);
933 lock_ObtainWrite(&volp->rw);
934 lock_ObtainWrite(&cm_volumeLock);
935 volp->refCount = 1; /* starts off held */
938 strncpy(volp->namep, name, VL_MAXNAMELEN);
939 volp->namep[VL_MAXNAMELEN-1] = '\0';
940 volp->flags = CM_VOLUMEFLAG_RESET;
942 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
943 volp->vol[volType].state = vl_unknown;
944 volp->vol[volType].nextp = NULL;
945 volp->vol[volType].flags = 0;
947 volp->cbExpiresRO = 0;
948 volp->cbServerpRO = NULL;
949 volp->lastUpdateRO = 0;
950 cm_AddVolumeToNameHashTable(volp);
951 lock_ReleaseWrite(&cm_volumeLock);
956 lock_ReleaseRead(&cm_volumeLock);
959 return CM_ERROR_NOSUCHVOLUME;
961 lock_ObtainWrite(&volp->rw);
964 /* if we get here we are holding the mutex */
965 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
966 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
968 lock_ReleaseWrite(&volp->rw);
970 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
971 type == ROVOL && volp->vol[ROVOL].ID == 0))
972 code = CM_ERROR_NOSUCHVOLUME;
977 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
978 lock_ObtainWrite(&cm_volumeLock);
979 cm_AdjustVolumeLRU(volp);
980 lock_ReleaseWrite(&cm_volumeLock);
983 lock_ObtainRead(&cm_volumeLock);
985 lock_ReleaseRead(&cm_volumeLock);
988 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
989 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
990 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
993 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
994 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1001 * Only call this function in response to a VNOVOL or VMOVED error
1002 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1003 * as that can lead to recursive calls.
1005 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1009 #ifdef SEARCH_ALL_VOLUMES
1016 return CM_ERROR_INVAL;
1018 cellp = cm_FindCellByID(fidp->cell, 0);
1020 return CM_ERROR_NOSUCHCELL;
1022 /* search for the volume */
1023 lock_ObtainRead(&cm_volumeLock);
1024 #ifdef SEARCH_ALL_VOLUMES
1025 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1026 if (cellp == volp->cellp &&
1027 (fidp->volume == volp->vol[RWVOL].ID ||
1028 fidp->volume == volp->vol[ROVOL].ID ||
1029 fidp->volume == volp->vol[BACKVOL].ID))
1032 #endif /* SEARCH_ALL_VOLUMES */
1034 hash = CM_VOLUME_ID_HASH(fidp->volume);
1035 /* The volumeID can be any one of the three types. So we must
1036 * search the hash table for all three types until we find it.
1037 * We will search in the order of RO, RW, BK.
1039 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1040 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1044 /* try RW volumes */
1045 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1046 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1051 /* try BK volumes */
1052 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1053 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1058 #ifdef SEARCH_ALL_VOLUMES
1059 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1061 /* hold the volume if we found it */
1065 lock_ReleaseRead(&cm_volumeLock);
1068 return CM_ERROR_NOSUCHVOLUME;
1071 cm_data.mountRootGen = time(NULL);
1072 lock_ObtainWrite(&volp->rw);
1073 volp->flags |= CM_VOLUMEFLAG_RESET;
1075 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1076 lock_ReleaseWrite(&volp->rw);
1078 lock_ObtainRead(&cm_volumeLock);
1080 lock_ReleaseRead(&cm_volumeLock);
1085 /* find the appropriate servers from a volume */
1086 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1088 cm_serverRef_t **serverspp;
1089 cm_serverRef_t *current;
1093 lock_ObtainWrite(&cm_serverLock);
1095 if (volume == volp->vol[RWVOL].ID)
1096 serverspp = &volp->vol[RWVOL].serversp;
1097 else if (volume == volp->vol[ROVOL].ID)
1098 serverspp = &volp->vol[ROVOL].serversp;
1099 else if (volume == volp->vol[BACKVOL].ID)
1100 serverspp = &volp->vol[BACKVOL].serversp;
1102 lock_ReleaseWrite(&cm_serverLock);
1106 lock_ObtainWrite(&volp->rw);
1107 volp->flags |= CM_VOLUMEFLAG_RESET;
1108 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1109 lock_ReleaseWrite(&volp->rw);
1117 * Increment the refCount on deleted items as well.
1118 * They will be freed by cm_FreeServerList when they get to zero
1120 for (current = *serverspp; current; current = current->next)
1121 current->refCount++;
1123 lock_ReleaseWrite(&cm_serverLock);
1128 void cm_PutVolume(cm_volume_t *volp)
1130 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1131 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1134 /* return the read-only volume, if there is one, or the read-write volume if
1137 long cm_GetROVolumeID(cm_volume_t *volp)
1141 lock_ObtainRead(&volp->rw);
1142 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1143 id = volp->vol[ROVOL].ID;
1145 id = volp->vol[RWVOL].ID;
1146 lock_ReleaseRead(&volp->rw);
1151 void cm_RefreshVolumes(void)
1157 cm_data.mountRootGen = time(NULL);
1159 /* force a re-loading of volume data from the vldb */
1160 lock_ObtainRead(&cm_volumeLock);
1161 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1162 InterlockedIncrement(&volp->refCount);
1163 lock_ReleaseRead(&cm_volumeLock);
1165 lock_ObtainWrite(&volp->rw);
1166 volp->flags |= CM_VOLUMEFLAG_RESET;
1167 lock_ReleaseWrite(&volp->rw);
1169 lock_ObtainRead(&cm_volumeLock);
1170 refCount = InterlockedDecrement(&volp->refCount);
1171 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1173 lock_ReleaseRead(&cm_volumeLock);
1175 /* force mount points to be re-evaluated so that
1176 * if the volume location has changed we will pick
1179 for ( scp = cm_data.scacheLRUFirstp;
1181 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1182 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1183 #ifdef AFS_FREELANCE_CLIENT
1184 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1187 lock_ObtainWrite(&scp->rw);
1188 scp->mountPointStringp[0] = '\0';
1189 lock_ReleaseWrite(&scp->rw);
1196 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1197 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1201 AFSFetchVolumeStatus volStat;
1206 struct rx_connection * rxconnp;
1208 char offLineMsg[256];
1210 long alldown, alldeleted;
1211 cm_serverRef_t *serversp;
1214 OfflineMsg = offLineMsg;
1217 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1218 if (!statep->serversp && !(*volumeUpdatedp)) {
1220 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1221 *volumeUpdatedp = 1;
1224 if (statep->serversp) {
1227 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1228 if (serversp->status == srv_deleted)
1235 if (serversp->status == srv_busy || serversp->status == srv_offline)
1236 serversp->status = srv_not_busy;
1239 if (alldeleted && !(*volumeUpdatedp)) {
1241 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1242 *volumeUpdatedp = 1;
1245 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1246 (!alldown && statep->state == vl_alldown)) {
1249 lock_ReleaseWrite(&volp->rw);
1251 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1255 rxconnp = cm_GetRxConn(connp);
1256 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1257 &volStat, &Name, &OfflineMsg, &MOTD);
1258 rx_PutConnection(rxconnp);
1260 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1261 code = cm_MapRPCError(code, &req);
1263 lock_ObtainWrite(&volp->rw);
1264 if (code == 0 && volStat.Online) {
1265 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1266 statep->state = vl_online;
1268 } else if (code == CM_ERROR_NOACCESS) {
1269 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1270 statep->state = vl_unknown;
1273 } else if (alldown && statep->state != vl_alldown) {
1274 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1275 statep->state = vl_alldown;
1277 } else if (statep->state != vl_alldown) {
1278 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1279 statep->state = vl_alldown;
1284 /* The return code is 0 if the volume is not online and
1285 * 1 if the volume is online
1288 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1292 afs_uint32 online = 0;
1293 afs_uint32 volumeUpdated = 0;
1295 lock_ObtainWrite(&volp->rw);
1297 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1299 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1303 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1304 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1305 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1307 lock_ReleaseWrite(&volp->rw);
1313 * called from the Daemon thread.
1314 * when checking the offline status, check those of the most recently used volumes first.
1316 void cm_CheckOfflineVolumes(void)
1320 extern int daemon_ShutdownFlag;
1321 extern int powerStateSuspended;
1323 lock_ObtainRead(&cm_volumeLock);
1324 for (volp = cm_data.volumeLRULastp;
1325 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1326 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1327 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1328 InterlockedIncrement(&volp->refCount);
1329 lock_ReleaseRead(&cm_volumeLock);
1330 cm_CheckOfflineVolume(volp, 0);
1331 lock_ObtainRead(&cm_volumeLock);
1332 refCount = InterlockedDecrement(&volp->refCount);
1333 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1336 lock_ReleaseRead(&cm_volumeLock);
1341 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1343 enum volstatus newStatus;
1344 cm_serverRef_t *tsrp;
1346 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1349 if (!volp || !statep) {
1356 lock_ObtainWrite(&cm_serverLock);
1357 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1359 sprintf(addr, "%d.%d.%d.%d",
1360 ((tsp->addr.sin_addr.s_addr & 0xff)),
1361 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1362 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1363 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1365 if (tsrp->status == srv_deleted) {
1366 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1367 statep->ID, osi_LogSaveString(afsd_logp,addr));
1371 cm_GetServerNoLock(tsp);
1372 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1374 if (tsrp->status == srv_busy) {
1375 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1376 statep->ID, osi_LogSaveString(afsd_logp,addr));
1379 } else if (tsrp->status == srv_offline) {
1380 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1381 statep->ID, osi_LogSaveString(afsd_logp,addr));
1385 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1386 statep->ID, osi_LogSaveString(afsd_logp,addr));
1391 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1392 statep->ID, osi_LogSaveString(afsd_logp,addr));
1394 cm_PutServerNoLock(tsp);
1397 lock_ReleaseWrite(&cm_serverLock);
1399 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1400 allDown, allBusy, someBusy, someOffline, allOffline);
1403 newStatus = vl_alldown;
1404 else if (allBusy || (someBusy && someOffline))
1405 newStatus = vl_busy;
1406 else if (allOffline)
1407 newStatus = vl_offline;
1409 newStatus = vl_online;
1411 if (statep->ID && statep->state != newStatus)
1412 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1414 statep->state = newStatus;
1418 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1421 if (volp->vol[RWVOL].ID == volID) {
1422 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1423 } else if (volp->vol[ROVOL].ID == volID) {
1424 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1425 } else if (volp->vol[BACKVOL].ID == volID) {
1426 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1429 * If we are called with volID == 0 then something has gone wrong.
1430 * Most likely a race occurred in the server volume list maintenance.
1431 * Since we don't know which volume's status should be updated,
1432 * just update all of them that are known to exist. Better to be
1433 * correct than fast.
1436 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1437 if (volp->vol[volType].ID != 0)
1438 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1444 ** Finds all volumes that reside on this server and reorders their
1445 ** RO list according to the changed rank of server.
1447 void cm_ChangeRankVolume(cm_server_t *tsp)
1453 /* find volumes which might have RO copy on server*/
1454 lock_ObtainRead(&cm_volumeLock);
1455 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1457 code = 1 ; /* assume that list is unchanged */
1458 InterlockedIncrement(&volp->refCount);
1459 lock_ReleaseRead(&cm_volumeLock);
1460 lock_ObtainWrite(&volp->rw);
1462 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1463 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1465 /* this volume list was changed */
1467 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1469 lock_ReleaseWrite(&volp->rw);
1470 lock_ObtainRead(&cm_volumeLock);
1471 refCount = InterlockedDecrement(&volp->refCount);
1472 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1474 lock_ReleaseRead(&cm_volumeLock);
1477 /* dump all volumes that have reference count > 0 to a file.
1478 * cookie is used to identify this batch for easy parsing,
1479 * and it a string provided by a caller
1481 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1488 lock_ObtainRead(&cm_scacheLock);
1489 lock_ObtainRead(&cm_volumeLock);
1492 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1493 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1495 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1498 char *srvStr = NULL;
1499 afs_uint32 srvStrRpc = TRUE;
1503 if (volp->cbServerpRO) {
1504 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1505 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1506 afs_asprintf(&srvStr, "%.0I", volp->cbServerpRO->addr.sin_addr.s_addr);
1510 if (volp->cbExpiresRO) {
1511 t = volp->cbExpiresRO;
1515 cbt[strlen(cbt)-1] = '\0';
1518 if (volp->lastUpdateRO) {
1519 t = volp->lastUpdateRO;
1522 lurot = strdup(lurot);
1523 lurot[strlen(lurot)-1] = '\0';
1527 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x cbServerpRO='%s' cbExpiresRO='%s' lastUpdateRO='%s' refCount=%u\r\n",
1528 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1529 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", lurot ? lurot : "<none>", volp->refCount);
1530 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1533 RpcStringFree(&srvStr);
1542 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1543 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1546 lock_ReleaseRead(&cm_volumeLock);
1547 lock_ReleaseRead(&cm_scacheLock);
1554 * String hash function used by SDBM project.
1555 * It was chosen because it is fast and provides
1558 afs_uint32 SDBMHash(const char * str)
1560 afs_uint32 hash = 0;
1566 for(i = 0, len = strlen(str); i < len; i++)
1568 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1571 return (hash & 0x7FFFFFFF);
1574 /* call with volume write-locked and mutex held */
1575 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1579 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1582 i = CM_VOLUME_NAME_HASH(volp->namep);
1584 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1585 cm_data.volumeNameHashTablep[i] = volp;
1586 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1589 /* call with volume write-locked and mutex held */
1590 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1592 cm_volume_t **lvolpp;
1596 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1597 /* hash it out first */
1598 i = CM_VOLUME_NAME_HASH(volp->namep);
1599 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1601 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1602 if (tvolp == volp) {
1603 *lvolpp = volp->nameNextp;
1604 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1605 volp->nameNextp = NULL;
1612 /* call with volume write-locked and mutex held */
1613 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1616 struct cm_vol_state * statep;
1618 statep = cm_VolumeStateByType(volp, volType);
1620 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1623 i = CM_VOLUME_ID_HASH(statep->ID);
1627 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1628 cm_data.volumeRWIDHashTablep[i] = volp;
1631 statep->nextp = cm_data.volumeROIDHashTablep[i];
1632 cm_data.volumeROIDHashTablep[i] = volp;
1635 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1636 cm_data.volumeBKIDHashTablep[i] = volp;
1639 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1643 /* call with volume write-locked and mutex held */
1644 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1646 cm_volume_t **lvolpp;
1648 struct cm_vol_state * statep;
1651 statep = cm_VolumeStateByType(volp, volType);
1653 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1654 /* hash it out first */
1655 i = CM_VOLUME_ID_HASH(statep->ID);
1659 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1660 tvolp = cm_data.volumeRWIDHashTablep[i];
1663 lvolpp = &cm_data.volumeROIDHashTablep[i];
1664 tvolp = cm_data.volumeROIDHashTablep[i];
1667 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1668 tvolp = cm_data.volumeBKIDHashTablep[i];
1671 osi_assertx(0, "invalid volume type");
1674 if (tvolp == volp) {
1675 *lvolpp = statep->nextp;
1676 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1677 statep->nextp = NULL;
1681 lvolpp = &tvolp->vol[volType].nextp;
1682 tvolp = tvolp->vol[volType].nextp;
1687 /* must be called with cm_volumeLock write-locked! */
1688 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1690 if (volp == cm_data.volumeLRULastp)
1691 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1692 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1693 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1694 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1695 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1696 if (!cm_data.volumeLRULastp)
1697 cm_data.volumeLRULastp = volp;
1700 /* must be called with cm_volumeLock write-locked! */
1701 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1703 if (volp == cm_data.volumeLRULastp)
1706 if (volp == cm_data.volumeLRUFirstp)
1707 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1708 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1709 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1710 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1711 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1712 if (!cm_data.volumeLRULastp)
1713 cm_data.volumeLRULastp = volp;
1716 /* must be called with cm_volumeLock write-locked! */
1717 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1719 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1720 if (volp == cm_data.volumeLRULastp)
1721 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1722 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1723 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1727 static char * volstatus_str(enum volstatus vs)
1743 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1745 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1748 if (volID == volp->vol[RWVOL].ID)
1750 else if (volID == volp->vol[ROVOL].ID)
1752 else if (volID == volp->vol[BACKVOL].ID)
1756 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1758 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1759 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1761 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1764 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1766 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1768 return statep->state;
1773 /* Renew .readonly volume callbacks that are more than
1774 * 30 minutes old. (A volume callback is issued for 2 hours.)
1777 cm_VolumeRenewROCallbacks(void)
1780 time_t minexp = time(NULL) + 90 * 60;
1781 extern int daemon_ShutdownFlag;
1782 extern int powerStateSuspended;
1784 lock_ObtainRead(&cm_volumeLock);
1785 for (volp = cm_data.allVolumesp;
1786 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1787 volp=volp->allNextp) {
1788 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1793 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1797 lock_ReleaseRead(&cm_volumeLock);
1798 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1799 lock_ObtainWrite(&scp->rw);
1800 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1801 lock_ReleaseWrite(&scp->rw);
1802 cm_ReleaseSCache(scp);
1804 lock_ObtainRead(&cm_volumeLock);
1807 lock_ReleaseRead(&cm_volumeLock);
1811 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1813 return &volp->vol[volType];
1817 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1819 cm_vol_state_t * statep = NULL;
1821 if (id == volp->vol[RWVOL].ID)
1822 statep = &volp->vol[RWVOL];
1823 else if (id == volp->vol[ROVOL].ID)
1824 statep = &volp->vol[ROVOL];
1825 else if (id == volp->vol[BACKVOL].ID)
1826 statep = &volp->vol[BACKVOL];
1832 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1834 size_t len = strlen(volname);
1835 cm_vol_state_t *statep;
1837 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1838 statep = &volp->vol[ROVOL];
1839 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1840 statep = &volp->vol[BACKVOL];
1842 statep = &volp->vol[RWVOL];
1848 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1850 if (id == volp->vol[RWVOL].ID)
1852 else if (id == volp->vol[ROVOL].ID)
1854 else if (id == volp->vol[BACKVOL].ID)