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>
18 #include <sys/socket.h>
26 osi_rwlock_t cm_volumeLock;
29 cm_ValidateVolume(void)
34 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
35 if ( volp->magic != CM_VOLUME_MAGIC ) {
36 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
37 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
40 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
41 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
42 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
45 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
46 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
47 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
50 if ( count != 0 && volp == cm_data.allVolumesp ||
51 count > cm_data.maxVolumes ) {
52 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
53 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
58 if ( count != cm_data.currentVolumes ) {
59 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
60 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
68 cm_ShutdownVolume(void)
72 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
74 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
75 if (volp->vol[volType].ID)
76 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
78 volp->cbExpiresRO = 0;
79 lock_FinalizeRWLock(&volp->rw);
85 void cm_InitVolume(int newFile, long maxVols)
87 static osi_once_t once;
89 if (osi_Once(&once)) {
90 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
93 cm_data.allVolumesp = NULL;
94 cm_data.currentVolumes = 0;
95 cm_data.maxVolumes = maxVols;
96 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
104 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock");
108 volp->flags |= CM_VOLUMEFLAG_RESET;
109 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
110 volp->vol[volType].state = vl_unknown;
111 volp->vol[volType].serversp = NULL;
112 if (volp->vol[volType].ID)
113 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_alldown, volp->vol[volType].state);
115 volp->cbExpiresRO = 0;
123 /* returns true if the id is a decimal integer, in which case we interpret it
124 * as an id. make the cache manager much simpler.
125 * Stolen from src/volser/vlprocs.c */
127 cm_VolNameIsID(char *aname)
130 while (tc = *aname++) {
131 if (tc > '9' || tc < '0')
139 * Update a volume. Caller holds a write lock on the volume (volp->rw).
142 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
143 * Yes, we support multihomed fileservers.
144 * Since before we got the code from IBM.
145 * But to find out about multiple addresses on a multihomed server, you need
146 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
147 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
148 * address per server.
149 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
150 * see src/afs/afs_volume.c, paying particular attention to
151 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
152 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
153 * thanks. The windows client calls the 0 versions.
154 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
156 * By not using the N versions, you only get up to 8 sites instead of 13.
157 * By not using the U versions, you don't get to know about multihomed serve
158 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
159 * Of course, you probably want to support the older versions for backward
160 * compatibility. If you do that, you need to call the newest interface
161 * first, and fall back to successively older versions if you get
165 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;
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 /* clear out old bindings */
192 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
193 if (volp->vol[volType].serversp)
194 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
197 #ifdef AFS_FREELANCE_CLIENT
198 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
201 memset(&vldbEntry, 0, sizeof(vldbEntry));
202 vldbEntry.flags |= VLF_RWEXISTS;
203 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
209 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
210 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
211 lock_ObtainWrite(&volp->rw);
213 if (!(volp->flags & CM_VOLUMEFLAG_RESET))
217 volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
218 lock_ReleaseWrite(&volp->rw);
220 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
221 cm_UpdateCell(cellp, 0);
223 /* now we have volume structure locked and held; make RPC to fill it */
224 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name, volp->namep);
226 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
230 code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
232 if ( code == RXGEN_OPCODE )
235 code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
238 if ( code == RXGEN_OPCODE ) {
239 code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
242 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
243 code = cm_MapVLRPCError(code, reqp);
245 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
246 volp->cellp->name, volp->namep, code);
248 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
249 volp->cellp->name, volp->namep);
252 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
253 * does not exist but there might exist a .readonly volume. If the base name
254 * doesn't exist we will not care about the .backup that might be left behind
255 * since there should be no method to access it.
257 if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
258 char name[VL_MAXNAMELEN];
260 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
262 /* now we have volume structure locked and held; make RPC to fill it */
263 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name,
264 osi_LogSaveString(afsd_logp,name));
266 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
270 code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
272 if ( code == RXGEN_OPCODE )
275 code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
278 if ( code == RXGEN_OPCODE ) {
279 code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
282 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
283 code = cm_MapVLRPCError(code, reqp);
285 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
286 volp->cellp->name, osi_LogSaveString(afsd_logp,name), code);
288 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
289 volp->cellp->name, osi_LogSaveString(afsd_logp,name));
292 lock_ObtainWrite(&volp->rw);
299 afs_int32 serverNumber[NMAXNSERVERS];
300 afs_int32 serverFlags[NMAXNSERVERS];
301 afs_int32 rwServers_alldown = 1;
302 afs_int32 roServers_alldown = 1;
303 afs_int32 bkServers_alldown = 1;
304 char name[VL_MAXNAMELEN];
306 #ifdef AFS_FREELANCE_CLIENT
308 rwServers_alldown = 0;
313 flags = vldbEntry.flags;
314 nServers = vldbEntry.nServers;
315 rwID = vldbEntry.volumeId[0];
316 roID = vldbEntry.volumeId[1];
317 bkID = vldbEntry.volumeId[2];
318 for ( i=0; i<nServers; i++ ) {
319 serverFlags[i] = vldbEntry.serverFlags[i];
320 serverNumber[i] = vldbEntry.serverNumber[i];
322 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
323 name[VL_MAXNAMELEN - 1] = '\0';
326 flags = nvldbEntry.flags;
327 nServers = nvldbEntry.nServers;
328 rwID = nvldbEntry.volumeId[0];
329 roID = nvldbEntry.volumeId[1];
330 bkID = nvldbEntry.volumeId[2];
331 for ( i=0; i<nServers; i++ ) {
332 serverFlags[i] = nvldbEntry.serverFlags[i];
333 serverNumber[i] = nvldbEntry.serverNumber[i];
335 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
336 name[VL_MAXNAMELEN - 1] = '\0';
340 flags = uvldbEntry.flags;
341 nServers = uvldbEntry.nServers;
342 rwID = uvldbEntry.volumeId[0];
343 roID = uvldbEntry.volumeId[1];
344 bkID = uvldbEntry.volumeId[2];
345 for ( i=0, j=0; i<nServers && j<NMAXNSERVERS; i++ ) {
346 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
347 serverFlags[j] = uvldbEntry.serverFlags[i];
348 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
351 afs_uint32 * addrp, nentries, code, unique;
353 ListAddrByAttributes attrs;
356 memset((char *)&attrs, 0, sizeof(attrs));
357 attrs.Mask = VLADDR_UUID;
358 attrs.uuid = uvldbEntry.serverNumber[i];
359 memset((char *)&uuid, 0, sizeof(uuid));
360 memset((char *)&addrs, 0, sizeof(addrs));
363 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
367 code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
369 if (code == 0 && nentries == 0)
371 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
372 code = cm_MapVLRPCError(code, reqp);
376 addrp = addrs.bulkaddrs_val;
377 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
378 serverFlags[j] = uvldbEntry.serverFlags[i];
379 serverNumber[j] = addrp[k];
382 free(addrs.bulkaddrs_val); /* This is wrong */
385 nServers = j; /* update the server count */
386 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
387 name[VL_MAXNAMELEN - 1] = '\0';
392 /* decode the response */
393 lock_ObtainWrite(&cm_volumeLock);
394 if (cm_VolNameIsID(volp->namep)) {
399 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
400 name[len - 7] = '\0';
401 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
402 name[len - 9] = '\0';
405 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s", volp->namep, name);
407 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
408 cm_RemoveVolumeFromNameHashTable(volp);
410 strcpy(volp->namep, name);
412 cm_AddVolumeToNameHashTable(volp);
415 if (flags & VLF_RWEXISTS) {
416 if (volp->vol[RWVOL].ID != rwID) {
417 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
418 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
419 volp->vol[RWVOL].ID = rwID;
420 cm_AddVolumeToIDHashTable(volp, RWVOL);
423 if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
424 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
425 volp->vol[RWVOL].ID = 0;
427 if (flags & VLF_ROEXISTS) {
428 if (volp->vol[ROVOL].ID != roID) {
429 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
430 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
431 volp->vol[ROVOL].ID = roID;
432 cm_AddVolumeToIDHashTable(volp, ROVOL);
435 if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
436 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
437 volp->vol[ROVOL].ID = 0;
439 if (flags & VLF_BACKEXISTS) {
440 if (volp->vol[BACKVOL].ID != bkID) {
441 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
442 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
443 volp->vol[BACKVOL].ID = bkID;
444 cm_AddVolumeToIDHashTable(volp, BACKVOL);
447 if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
448 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
449 volp->vol[BACKVOL].ID = 0;
451 lock_ReleaseWrite(&cm_volumeLock);
452 for (i=0; i<nServers; i++) {
453 /* create a server entry */
454 tflags = serverFlags[i];
455 if (tflags & VLSF_DONTUSE)
457 tsockAddr.sin_family = AF_INET;
458 tempAddr = htonl(serverNumber[i]);
459 tsockAddr.sin_addr.s_addr = tempAddr;
460 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
462 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
465 /* if this server was created by fs setserverprefs */
469 osi_assertx(tsp != NULL, "null cm_server_t");
471 /* and add it to the list(s). */
473 * Each call to cm_NewServerRef() increments the
474 * ref count of tsp. These reference will be dropped,
475 * if and when the volume is reset; see reset code
476 * earlier in this function.
478 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
479 tsrp = cm_NewServerRef(tsp, rwID);
480 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
482 lock_ObtainWrite(&cm_serverLock);
483 tsrp->refCount--; /* drop allocation reference */
484 lock_ReleaseWrite(&cm_serverLock);
486 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
487 rwServers_alldown = 0;
489 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
490 tsrp = cm_NewServerRef(tsp, roID);
491 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
492 lock_ObtainWrite(&cm_serverLock);
493 tsrp->refCount--; /* drop allocation reference */
494 lock_ReleaseWrite(&cm_serverLock);
497 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
498 roServers_alldown = 0;
500 /* We don't use VLSF_BACKVOL !?! */
501 /* Because only the backup on the server holding the RW
502 * volume can be valid. This check prevents errors if a
503 * RW is moved but the old backup is not removed.
505 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
506 tsrp = cm_NewServerRef(tsp, bkID);
507 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
508 lock_ObtainWrite(&cm_serverLock);
509 tsrp->refCount--; /* drop allocation reference */
510 lock_ReleaseWrite(&cm_serverLock);
512 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
513 bkServers_alldown = 0;
515 /* Drop the reference obtained by cm_FindServer() */
522 * If the first n servers have the same ipRank, then we
523 * randomly pick one among them and move it to the beginning.
524 * We don't bother to re-order the whole list because
525 * the rest of the list is used only if the first server is
526 * down. We only do this for the RO list; we assume the other
527 * lists are length 1.
530 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
533 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
534 roNewstate = roServers_alldown ? vl_alldown : vl_online;
535 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
536 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT) {
537 /* this volume does not exist - we should discard it */
538 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
539 cm_RemoveVolumeFromNameHashTable(volp);
540 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
541 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
542 cm_RemoveVolumeFromIDHashTable(volp, volType);
543 if (volp->vol[volType].ID) {
544 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
545 volp->vol[volType].ID = 0;
547 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
550 /* Move to the end so it will be recycled first */
551 cm_MoveVolumeToLRULast(volp);
553 volp->namep[0] ='\0';
555 rwNewstate = roNewstate = bkNewstate = vl_alldown;
558 if (volp->vol[RWVOL].state != rwNewstate) {
559 if (volp->vol[RWVOL].ID)
560 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
561 volp->vol[RWVOL].state = rwNewstate;
563 if (volp->vol[ROVOL].state != roNewstate) {
564 if (volp->vol[ROVOL].ID)
565 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
566 volp->vol[ROVOL].state = roNewstate;
568 if (volp->vol[BACKVOL].state != bkNewstate) {
569 if (volp->vol[BACKVOL].ID)
570 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
571 volp->vol[BACKVOL].state = bkNewstate;
574 volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
575 osi_Wakeup((LONG_PTR) &volp->flags);
580 /* Requires read or write lock on cm_volumeLock */
581 void cm_GetVolume(cm_volume_t *volp)
583 InterlockedIncrement(&volp->refCount);
586 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
591 lock_ObtainRead(&cm_volumeLock);
592 hash = CM_VOLUME_ID_HASH(fidp->volume);
593 /* The volumeID can be any one of the three types. So we must
594 * search the hash table for all three types until we find it.
595 * We will search in the order of RO, RW, BK.
597 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
598 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
603 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
604 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
610 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
611 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
616 /* hold the volume if we found it */
620 lock_ReleaseRead(&cm_volumeLock);
624 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
625 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
628 #ifdef SEARCH_ALL_VOLUMES
631 char volNameString[VL_MAXNAMELEN];
635 lock_ObtainRead(&cm_volumeLock);
636 #ifdef SEARCH_ALL_VOLUMES
637 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
638 if (cellp == volp->cellp &&
639 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
640 (unsigned) volumeID == volp->vol[ROVOL].ID ||
641 (unsigned) volumeID == volp->vol[BACKVOL].ID))
646 #endif /* SEARCH_ALL_VOLUMES */
648 hash = CM_VOLUME_ID_HASH(volumeID);
649 /* The volumeID can be any one of the three types. So we must
650 * search the hash table for all three types until we find it.
651 * We will search in the order of RO, RW, BK.
653 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
654 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
659 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
660 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
666 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
667 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
672 #ifdef SEARCH_ALL_VOLUMES
673 osi_assertx(volp == volp2, "unexpected cm_vol_t");
676 /* hold the volume if we found it */
680 lock_ReleaseRead(&cm_volumeLock);
684 lock_ObtainWrite(&volp->rw);
687 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
688 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
690 volp->flags &= ~CM_VOLUMEFLAG_RESET;
692 lock_ReleaseWrite(&volp->rw);
696 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
697 lock_ObtainWrite(&cm_volumeLock);
698 cm_AdjustVolumeLRU(volp);
699 lock_ReleaseWrite(&cm_volumeLock);
702 lock_ObtainRead(&cm_volumeLock);
704 lock_ReleaseRead(&cm_volumeLock);
709 /* otherwise, we didn't find it so consult the VLDB */
710 sprintf(volNameString, "%u", volumeID);
711 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
717 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
718 struct cm_user *userp, struct cm_req *reqp,
719 afs_uint32 flags, cm_volume_t **outVolpp)
722 #ifdef SEARCH_ALL_VOLUMES
726 char name[VL_MAXNAMELEN];
731 strncpy(name, volumeNamep, VL_MAXNAMELEN);
732 name[VL_MAXNAMELEN-1] = '\0';
735 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
737 name[len - 7] = '\0';
738 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
740 name[len - 9] = '\0';
745 lock_ObtainRead(&cm_volumeLock);
746 #ifdef SEARCH_ALL_VOLUMES
747 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
748 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
753 #endif /* SEARCH_ALL_VOLUMES */
755 hash = CM_VOLUME_NAME_HASH(name);
756 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
757 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
761 #ifdef SEARCH_ALL_VOLUMES
762 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
765 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
767 /* otherwise, get from VLDB */
769 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
770 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
771 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
772 if ( volp->refCount == 0 ) {
773 /* There is one we can re-use */
778 for ( volp = cm_data.volumeLRULastp;
780 volp = (cm_volume_t *) osi_QPrev(&volp->q))
782 if ( volp->refCount == 0 ) {
783 /* There is one we can re-use */
789 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
791 lock_ReleaseRead(&cm_volumeLock);
792 lock_ObtainWrite(&volp->rw);
793 lock_ObtainWrite(&cm_volumeLock);
795 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
796 volp->cellp->name, volp->namep);
798 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
799 cm_RemoveVolumeFromLRU(volp);
800 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
801 cm_RemoveVolumeFromNameHashTable(volp);
803 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
804 if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
805 cm_RemoveVolumeFromIDHashTable(volp, volType);
806 if (volp->vol[volType].ID)
807 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
808 volp->vol[volType].ID = 0;
809 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
812 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
813 memset(volp, 0, sizeof(cm_volume_t));
814 volp->magic = CM_VOLUME_MAGIC;
815 volp->allNextp = cm_data.allVolumesp;
816 cm_data.allVolumesp = volp;
817 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock");
818 lock_ReleaseRead(&cm_volumeLock);
819 lock_ObtainWrite(&volp->rw);
820 lock_ObtainWrite(&cm_volumeLock);
823 strncpy(volp->namep, name, VL_MAXNAMELEN);
824 volp->namep[VL_MAXNAMELEN-1] = '\0';
825 volp->refCount = 1; /* starts off held */
826 volp->flags = CM_VOLUMEFLAG_RESET;
828 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
829 volp->vol[volType].state = vl_unknown;
830 volp->vol[volType].nextp = NULL;
831 volp->vol[volType].flags = 0;
833 volp->cbExpiresRO = 0;
834 cm_AddVolumeToNameHashTable(volp);
835 lock_ReleaseWrite(&cm_volumeLock);
840 lock_ReleaseRead(&cm_volumeLock);
843 return CM_ERROR_NOSUCHVOLUME;
845 lock_ObtainWrite(&volp->rw);
848 /* if we get here we are holding the mutex */
849 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
850 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
852 volp->flags &= ~CM_VOLUMEFLAG_RESET;
854 lock_ReleaseWrite(&volp->rw);
856 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
857 type == ROVOL && volp->vol[ROVOL].ID == 0))
858 code = CM_ERROR_NOSUCHVOLUME;
863 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
864 lock_ObtainWrite(&cm_volumeLock);
865 cm_AdjustVolumeLRU(volp);
866 lock_ReleaseWrite(&cm_volumeLock);
869 lock_ObtainRead(&cm_volumeLock);
871 lock_ReleaseRead(&cm_volumeLock);
876 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
880 #ifdef SEARCH_ALL_VOLUMES
887 cellp = cm_FindCellByID(fidp->cell, 0);
890 /* search for the volume */
891 lock_ObtainRead(&cm_volumeLock);
892 #ifdef SEARCH_ALL_VOLUMES
893 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
894 if (cellp == volp->cellp &&
895 (fidp->volume == volp->vol[RWVOL].ID ||
896 fidp->volume == volp->vol[ROVOL].ID ||
897 fidp->volume == volp->vol[BACKVOL].ID))
900 #endif /* SEARCH_ALL_VOLUMES */
902 hash = CM_VOLUME_ID_HASH(fidp->volume);
903 /* The volumeID can be any one of the three types. So we must
904 * search the hash table for all three types until we find it.
905 * We will search in the order of RO, RW, BK.
907 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
908 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
913 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
914 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
920 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
921 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
926 #ifdef SEARCH_ALL_VOLUMES
927 osi_assertx(volp == volp2, "unexpected cm_vol_t");
929 /* hold the volume if we found it */
933 lock_ReleaseRead(&cm_volumeLock);
939 cm_data.mountRootGen = time(NULL);
940 lock_ObtainWrite(&volp->rw);
941 volp->flags |= CM_VOLUMEFLAG_RESET;
943 /* Mark the volume to be updated but don't update it now.
944 * This function is called only from within cm_Analyze
945 * when cm_ConnByMServers has failed with all servers down
946 * The problem is that cm_UpdateVolume is going to call
947 * cm_ConnByMServers which may cause a recursive chain
948 * of calls each returning a retry on failure.
949 * Instead, set the flag so the next time the volume is
950 * accessed by Name or ID the UpdateVolume call will
953 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
955 volp->flags &= ~CM_VOLUMEFLAG_RESET;
957 lock_ReleaseWrite(&volp->rw);
959 lock_ObtainRead(&cm_volumeLock);
961 lock_ReleaseRead(&cm_volumeLock);
964 /* find the appropriate servers from a volume */
965 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
967 cm_serverRef_t **serverspp;
968 cm_serverRef_t *current;;
970 lock_ObtainWrite(&cm_serverLock);
972 if (volume == volp->vol[RWVOL].ID)
973 serverspp = &volp->vol[RWVOL].serversp;
974 else if (volume == volp->vol[ROVOL].ID)
975 serverspp = &volp->vol[ROVOL].serversp;
976 else if (volume == volp->vol[BACKVOL].ID)
977 serverspp = &volp->vol[BACKVOL].serversp;
979 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
981 for (current = *serverspp; current; current = current->next)
984 lock_ReleaseWrite(&cm_serverLock);
989 void cm_PutVolume(cm_volume_t *volp)
991 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
992 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
995 /* return the read-only volume, if there is one, or the read-write volume if
998 long cm_GetROVolumeID(cm_volume_t *volp)
1002 lock_ObtainRead(&volp->rw);
1003 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1004 id = volp->vol[ROVOL].ID;
1006 id = volp->vol[RWVOL].ID;
1007 lock_ReleaseRead(&volp->rw);
1012 void cm_RefreshVolumes(void)
1018 cm_data.mountRootGen = time(NULL);
1020 /* force a re-loading of volume data from the vldb */
1021 lock_ObtainRead(&cm_volumeLock);
1022 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1023 InterlockedIncrement(&volp->refCount);
1024 lock_ReleaseRead(&cm_volumeLock);
1026 lock_ObtainWrite(&volp->rw);
1027 volp->flags |= CM_VOLUMEFLAG_RESET;
1028 lock_ReleaseWrite(&volp->rw);
1030 lock_ObtainRead(&cm_volumeLock);
1031 refCount = InterlockedDecrement(&volp->refCount);
1032 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1034 lock_ReleaseRead(&cm_volumeLock);
1036 /* force mount points to be re-evaluated so that
1037 * if the volume location has changed we will pick
1040 for ( scp = cm_data.scacheLRUFirstp;
1042 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1043 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1044 #ifdef AFS_FREELANCE_CLIENT
1045 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1048 lock_ObtainWrite(&scp->rw);
1049 scp->mountPointStringp[0] = '\0';
1050 lock_ReleaseWrite(&scp->rw);
1057 /* The return code is 0 if the volume is not online and
1058 * 1 if the volume is online
1061 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1065 AFSFetchVolumeStatus volStat;
1070 struct rx_connection * callp;
1072 char offLineMsg[256];
1075 cm_serverRef_t *serversp;
1078 OfflineMsg = offLineMsg;
1081 lock_ObtainWrite(&volp->rw);
1083 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1085 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1087 volp->flags &= ~CM_VOLUMEFLAG_RESET;
1090 if (volp->vol[RWVOL].ID != 0 && (!volID || volID == volp->vol[RWVOL].ID) &&
1091 volp->vol[RWVOL].serversp) {
1093 for (serversp = volp->vol[RWVOL].serversp; serversp; serversp = serversp->next) {
1094 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1095 serversp->status = srv_not_busy;
1100 if (volp->vol[RWVOL].state == vl_busy || volp->vol[RWVOL].state == vl_offline || volp->vol[RWVOL].state == vl_unknown) {
1103 lock_ReleaseWrite(&volp->rw);
1105 code = cm_ConnFromVolume(volp, volp->vol[RWVOL].ID, cm_rootUserp, &req, &connp);
1109 callp = cm_GetRxConn(connp);
1110 code = RXAFS_GetVolumeStatus(callp, volp->vol[RWVOL].ID,
1111 &volStat, &Name, &OfflineMsg, &MOTD);
1112 rx_PutConnection(callp);
1114 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1115 code = cm_MapRPCError(code, &req);
1117 lock_ObtainWrite(&volp->rw);
1118 if (code == 0 && volStat.Online) {
1119 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, vl_online);
1120 volp->vol[RWVOL].state = vl_online;
1122 } else if (code == CM_ERROR_NOACCESS) {
1123 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, vl_unknown);
1124 volp->vol[RWVOL].state = vl_unknown;
1130 if (volp->vol[ROVOL].ID != 0 && (!volID || volID == volp->vol[ROVOL].ID) &&
1131 volp->vol[ROVOL].serversp) {
1133 for (serversp = volp->vol[ROVOL].serversp; serversp; serversp = serversp->next) {
1134 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1135 serversp->status = srv_not_busy;
1140 if (volp->vol[ROVOL].state == vl_busy || volp->vol[ROVOL].state == vl_offline || volp->vol[ROVOL].state == vl_unknown) {
1143 lock_ReleaseWrite(&volp->rw);
1145 code = cm_ConnFromVolume(volp, volp->vol[ROVOL].ID, cm_rootUserp, &req, &connp);
1149 callp = cm_GetRxConn(connp);
1150 code = RXAFS_GetVolumeStatus(callp, volp->vol[ROVOL].ID,
1151 &volStat, &Name, &OfflineMsg, &MOTD);
1152 rx_PutConnection(callp);
1154 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1155 code = cm_MapRPCError(code, &req);
1157 lock_ObtainWrite(&volp->rw);
1158 if (code == 0 && volStat.Online) {
1159 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, vl_online);
1160 volp->vol[ROVOL].state = vl_online;
1162 } else if (code == CM_ERROR_NOACCESS) {
1163 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, vl_unknown);
1164 volp->vol[ROVOL].state = vl_unknown;
1170 if (volp->vol[BACKVOL].ID != 0 && (!volID || volID == volp->vol[BACKVOL].ID) &&
1171 volp->vol[BACKVOL].serversp) {
1173 for (serversp = volp->vol[BACKVOL].serversp; serversp; serversp = serversp->next) {
1174 if (serversp->status == srv_busy || serversp->status == srv_offline) {
1175 serversp->status = srv_not_busy;
1180 if (volp->vol[BACKVOL].state == vl_busy || volp->vol[BACKVOL].state == vl_offline || volp->vol[BACKVOL].state == vl_unknown) {
1183 lock_ReleaseWrite(&volp->rw);
1185 code = cm_ConnFromVolume(volp, volp->vol[BACKVOL].ID, cm_rootUserp, &req, &connp);
1189 callp = cm_GetRxConn(connp);
1190 code = RXAFS_GetVolumeStatus(callp, volp->vol[BACKVOL].ID,
1191 &volStat, &Name, &OfflineMsg, &MOTD);
1192 rx_PutConnection(callp);
1194 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1195 code = cm_MapRPCError(code, &req);
1197 lock_ObtainWrite(&volp->rw);
1198 if (code == 0 && volStat.Online) {
1199 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, vl_online);
1200 volp->vol[BACKVOL].state = vl_online;
1202 } else if (code == CM_ERROR_NOACCESS) {
1203 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, vl_unknown);
1204 volp->vol[BACKVOL].state = vl_unknown;
1210 lock_ReleaseWrite(&volp->rw);
1215 /* called from the Daemon thread */
1216 void cm_CheckOfflineVolumes(void)
1221 lock_ObtainRead(&cm_volumeLock);
1222 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1223 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1224 InterlockedIncrement(&volp->refCount);
1225 lock_ReleaseRead(&cm_volumeLock);
1226 cm_CheckOfflineVolume(volp, 0);
1227 lock_ObtainRead(&cm_volumeLock);
1228 refCount = InterlockedDecrement(&volp->refCount);
1229 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1232 lock_ReleaseRead(&cm_volumeLock);
1237 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1239 enum volstatus newStatus;
1240 cm_serverRef_t *tsrp;
1242 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1244 if (!volp || !statep) {
1251 lock_ObtainWrite(&cm_serverLock);
1252 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1254 cm_GetServerNoLock(tsp);
1255 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1257 if (tsrp->status == srv_busy) {
1260 } else if (tsrp->status == srv_offline) {
1268 cm_PutServerNoLock(tsp);
1270 lock_ReleaseWrite(&cm_serverLock);
1273 newStatus = vl_alldown;
1274 else if (allBusy || (someBusy && someOffline))
1275 newStatus = vl_busy;
1276 else if (allOffline)
1277 newStatus = vl_offline;
1279 newStatus = vl_online;
1281 if (statep->ID && statep->state != newStatus)
1282 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1284 statep->state = newStatus;
1288 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1291 if (volp->vol[RWVOL].ID == volID) {
1292 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1293 } else if (volp->vol[ROVOL].ID == volID) {
1294 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1295 } else if (volp->vol[BACKVOL].ID == volID) {
1296 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1299 * If we are called with volID == 0 then something has gone wrong.
1300 * Most likely a race occurred in the server volume list maintenance.
1301 * Since we don't know which volume's status should be updated,
1302 * just update all of them that are known to exist. Better to be
1303 * correct than fast.
1306 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1307 if (volp->vol[volType].ID != 0)
1308 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1314 ** Finds all volumes that reside on this server and reorders their
1315 ** RO list according to the changed rank of server.
1317 void cm_ChangeRankVolume(cm_server_t *tsp)
1323 /* find volumes which might have RO copy on server*/
1324 lock_ObtainRead(&cm_volumeLock);
1325 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1327 code = 1 ; /* assume that list is unchanged */
1328 InterlockedIncrement(&volp->refCount);
1329 lock_ReleaseRead(&cm_volumeLock);
1330 lock_ObtainWrite(&volp->rw);
1332 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1333 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1335 /* this volume list was changed */
1337 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1339 lock_ReleaseWrite(&volp->rw);
1340 lock_ObtainRead(&cm_volumeLock);
1341 refCount = InterlockedDecrement(&volp->refCount);
1342 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1344 lock_ReleaseRead(&cm_volumeLock);
1347 /* dump all volumes that have reference count > 0 to a file.
1348 * cookie is used to identify this batch for easy parsing,
1349 * and it a string provided by a caller
1351 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1358 lock_ObtainRead(&cm_scacheLock);
1359 lock_ObtainRead(&cm_volumeLock);
1362 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1363 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1365 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1367 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1368 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
1370 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1372 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1373 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1376 lock_ReleaseRead(&cm_volumeLock);
1377 lock_ReleaseRead(&cm_scacheLock);
1384 * String hash function used by SDBM project.
1385 * It was chosen because it is fast and provides
1388 afs_uint32 SDBMHash(const char * str)
1390 afs_uint32 hash = 0;
1396 for(i = 0, len = strlen(str); i < len; i++)
1398 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1401 return (hash & 0x7FFFFFFF);
1404 /* call with volume write-locked and mutex held */
1405 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1409 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1412 i = CM_VOLUME_NAME_HASH(volp->namep);
1414 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1415 cm_data.volumeNameHashTablep[i] = volp;
1416 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1419 /* call with volume write-locked and mutex held */
1420 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1422 cm_volume_t **lvolpp;
1426 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1427 /* hash it out first */
1428 i = CM_VOLUME_NAME_HASH(volp->namep);
1429 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1431 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1432 if (tvolp == volp) {
1433 *lvolpp = volp->nameNextp;
1434 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1435 volp->nameNextp = NULL;
1442 /* call with volume write-locked and mutex held */
1443 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1446 struct cm_vol_state * statep;
1448 statep = cm_VolumeStateByType(volp, volType);
1450 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1453 i = CM_VOLUME_ID_HASH(statep->ID);
1457 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1458 cm_data.volumeRWIDHashTablep[i] = volp;
1461 statep->nextp = cm_data.volumeROIDHashTablep[i];
1462 cm_data.volumeROIDHashTablep[i] = volp;
1465 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1466 cm_data.volumeBKIDHashTablep[i] = volp;
1469 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1473 /* call with volume write-locked and mutex held */
1474 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1476 cm_volume_t **lvolpp;
1478 struct cm_vol_state * statep;
1481 statep = cm_VolumeStateByType(volp, volType);
1483 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1484 /* hash it out first */
1485 i = CM_VOLUME_ID_HASH(statep->ID);
1489 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1490 tvolp = cm_data.volumeRWIDHashTablep[i];
1493 lvolpp = &cm_data.volumeROIDHashTablep[i];
1494 tvolp = cm_data.volumeROIDHashTablep[i];
1497 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1498 tvolp = cm_data.volumeBKIDHashTablep[i];
1501 osi_assertx(0, "invalid volume type");
1504 if (tvolp == volp) {
1505 *lvolpp = statep->nextp;
1506 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1507 statep->nextp = NULL;
1511 lvolpp = &tvolp->vol[volType].nextp;
1512 tvolp = tvolp->vol[volType].nextp;
1517 /* must be called with cm_volumeLock write-locked! */
1518 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1520 if (volp == cm_data.volumeLRULastp)
1521 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1522 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1523 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1524 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1525 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1526 if (!cm_data.volumeLRULastp)
1527 cm_data.volumeLRULastp = volp;
1530 /* must be called with cm_volumeLock write-locked! */
1531 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1533 if (volp == cm_data.volumeLRULastp)
1536 if (volp == cm_data.volumeLRUFirstp)
1537 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1538 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1539 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1540 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1541 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1542 if (!cm_data.volumeLRULastp)
1543 cm_data.volumeLRULastp = volp;
1546 /* must be called with cm_volumeLock write-locked! */
1547 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1549 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1550 if (volp == cm_data.volumeLRULastp)
1551 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1552 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1553 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1557 static char * volstatus_str(enum volstatus vs)
1573 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1575 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1578 if (volID == volp->vol[RWVOL].ID)
1580 else if (volID == volp->vol[ROVOL].ID)
1582 else if (volID == volp->vol[BACKVOL].ID)
1586 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1588 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1589 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1591 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1594 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1596 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1598 return statep->state;
1603 /* Renew .readonly volume callbacks that are more than
1604 * 30 minutes old. (A volume callback is issued for 2 hours.)
1607 cm_VolumeRenewROCallbacks(void)
1610 time_t minexp = time(NULL) + 90 * 60;
1612 lock_ObtainRead(&cm_volumeLock);
1613 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1614 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1619 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1623 lock_ReleaseRead(&cm_volumeLock);
1624 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1625 lock_ObtainWrite(&scp->rw);
1626 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1627 lock_ReleaseWrite(&scp->rw);
1628 cm_ReleaseSCache(scp);
1630 lock_ObtainRead(&cm_volumeLock);
1633 lock_ReleaseRead(&cm_volumeLock);
1637 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1639 return &volp->vol[volType];
1643 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1645 cm_vol_state_t * statep = NULL;
1647 if (id == volp->vol[RWVOL].ID)
1648 statep = &volp->vol[RWVOL];
1649 else if (id == volp->vol[ROVOL].ID)
1650 statep = &volp->vol[ROVOL];
1651 else if (id == volp->vol[BACKVOL].ID)
1652 statep = &volp->vol[BACKVOL];
1658 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1660 size_t len = strlen(volname);
1661 cm_vol_state_t *statep;
1663 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1664 statep = &volp->vol[ROVOL];
1665 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1666 statep = &volp->vol[BACKVOL];
1668 statep = &volp->vol[RWVOL];