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) {
71 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_alldown);
73 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_alldown);
75 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_alldown);
76 volp->cbExpiresRO = 0;
77 lock_FinalizeMutex(&volp->mx);
83 void cm_InitVolume(int newFile, long maxVols)
85 static osi_once_t once;
87 if (osi_Once(&once)) {
88 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
91 cm_data.allVolumesp = NULL;
92 cm_data.currentVolumes = 0;
93 cm_data.maxVolumes = maxVols;
94 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
95 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
96 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
102 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
103 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
104 volp->flags |= CM_VOLUMEFLAG_RESET;
105 volp->rw.state = vl_unknown;
106 volp->rw.serversp = NULL;
107 volp->ro.state = vl_unknown;
108 volp->ro.serversp = NULL;
109 volp->bk.state = vl_unknown;
110 volp->bk.serversp = NULL;
112 cm_VolumeStatusNotification(volp, volp->rw.ID, vl_alldown, volp->rw.state);
114 cm_VolumeStatusNotification(volp, volp->ro.ID, vl_alldown, volp->ro.state);
116 cm_VolumeStatusNotification(volp, volp->bk.ID, vl_alldown, volp->bk.state);
117 volp->cbExpiresRO = 0;
125 /* returns true if the id is a decimal integer, in which case we interpret it
126 * as an id. make the cache manager much simpler.
127 * Stolen from src/volser/vlprocs.c */
129 cm_VolNameIsID(char *aname)
132 while (tc = *aname++) {
133 if (tc > '9' || tc < '0')
141 * Update a volume. Caller holds volume's lock (volp->mx).
144 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
145 * Yes, we support multihomed fileservers.
146 * Since before we got the code from IBM.
147 * But to find out about multiple addresses on a multihomed server, you need
148 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
149 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
150 * address per server.
151 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
152 * see src/afs/afs_volume.c, paying particular attention to
153 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
154 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
155 * thanks. The windows client calls the 0 versions.
156 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
158 * By not using the N versions, you only get up to 8 sites instead of 13.
159 * By not using the U versions, you don't get to know about multihomed serve
160 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
161 * Of course, you probably want to support the older versions for backward
162 * compatibility. If you do that, you need to call the newest interface
163 * first, and fall back to successively older versions if you get
167 long cm_UpdateVolume(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
172 cm_serverRef_t *tsrp;
174 struct sockaddr_in tsockAddr;
177 struct vldbentry vldbEntry;
178 struct nvldbentry nvldbEntry;
180 struct uvldbentry uvldbEntry;
185 enum volstatus rwNewstate = vl_online;
186 enum volstatus roNewstate = vl_online;
187 enum volstatus bkNewstate = vl_online;
188 #ifdef AFS_FREELANCE_CLIENT
192 /* clear out old bindings */
193 if (volp->rw.serversp)
194 cm_FreeServerList(&volp->rw.serversp, CM_FREESERVERLIST_DELETE);
195 if (volp->ro.serversp)
196 cm_FreeServerList(&volp->ro.serversp, CM_FREESERVERLIST_DELETE);
197 if (volp->bk.serversp)
198 cm_FreeServerList(&volp->bk.serversp, CM_FREESERVERLIST_DELETE);
200 #ifdef AFS_FREELANCE_CLIENT
201 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->rw.ID == AFS_FAKE_ROOT_VOL_ID )
204 memset(&vldbEntry, 0, sizeof(vldbEntry));
205 vldbEntry.flags |= VLF_RWEXISTS;
206 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
212 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
213 cm_UpdateCell(cellp, 0);
215 /* now we have volume structure locked and held; make RPC to fill it */
216 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name, volp->namep);
218 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
222 code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
224 if ( code == RXGEN_OPCODE )
227 code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
230 if ( code == RXGEN_OPCODE ) {
231 code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
234 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
235 code = cm_MapVLRPCError(code, reqp);
237 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
238 volp->cellp->name, volp->namep, code);
240 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
241 volp->cellp->name, volp->namep);
244 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
245 * does not exist but there might exist a .readonly volume. If the base name
246 * doesn't exist we will not care about the .backup that might be left behind
247 * since there should be no method to access it.
249 if (code == CM_ERROR_NOSUCHVOLUME && volp->rw.ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
250 char name[VL_MAXNAMELEN];
252 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
254 /* now we have volume structure locked and held; make RPC to fill it */
255 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name,
256 osi_LogSaveString(afsd_logp,name));
258 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
262 code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
264 if ( code == RXGEN_OPCODE )
267 code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
270 if ( code == RXGEN_OPCODE ) {
271 code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
274 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
275 code = cm_MapVLRPCError(code, reqp);
277 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
278 volp->cellp->name, osi_LogSaveString(afsd_logp,name), code);
280 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
281 volp->cellp->name, osi_LogSaveString(afsd_logp,name));
290 afs_int32 serverNumber[NMAXNSERVERS];
291 afs_int32 serverFlags[NMAXNSERVERS];
292 afs_int32 rwServers_alldown = 1;
293 afs_int32 roServers_alldown = 1;
294 afs_int32 bkServers_alldown = 1;
295 char name[VL_MAXNAMELEN];
297 #ifdef AFS_FREELANCE_CLIENT
299 rwServers_alldown = 0;
304 flags = vldbEntry.flags;
305 nServers = vldbEntry.nServers;
306 rwID = vldbEntry.volumeId[0];
307 roID = vldbEntry.volumeId[1];
308 bkID = vldbEntry.volumeId[2];
309 for ( i=0; i<nServers; i++ ) {
310 serverFlags[i] = vldbEntry.serverFlags[i];
311 serverNumber[i] = vldbEntry.serverNumber[i];
313 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
314 name[VL_MAXNAMELEN - 1] = '\0';
317 flags = nvldbEntry.flags;
318 nServers = nvldbEntry.nServers;
319 rwID = nvldbEntry.volumeId[0];
320 roID = nvldbEntry.volumeId[1];
321 bkID = nvldbEntry.volumeId[2];
322 for ( i=0; i<nServers; i++ ) {
323 serverFlags[i] = nvldbEntry.serverFlags[i];
324 serverNumber[i] = nvldbEntry.serverNumber[i];
326 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
327 name[VL_MAXNAMELEN - 1] = '\0';
331 flags = uvldbEntry.flags;
332 nServers = uvldbEntry.nServers;
333 rwID = uvldbEntry.volumeId[0];
334 roID = uvldbEntry.volumeId[1];
335 bkID = uvldbEntry.volumeId[2];
336 for ( i=0, j=0; i<nServers && j<NMAXNSERVERS; i++ ) {
337 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
338 serverFlags[j] = uvldbEntry.serverFlags[i];
339 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
342 afs_uint32 * addrp, nentries, code, unique;
344 ListAddrByAttributes attrs;
347 memset((char *)&attrs, 0, sizeof(attrs));
348 attrs.Mask = VLADDR_UUID;
349 attrs.uuid = uvldbEntry.serverNumber[i];
350 memset((char *)&uuid, 0, sizeof(uuid));
351 memset((char *)&addrs, 0, sizeof(addrs));
354 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
358 code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
360 if (code == 0 && nentries == 0)
362 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
363 code = cm_MapVLRPCError(code, reqp);
367 addrp = addrs.bulkaddrs_val;
368 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
369 serverFlags[j] = uvldbEntry.serverFlags[i];
370 serverNumber[j] = addrp[k];
373 free(addrs.bulkaddrs_val); /* This is wrong */
376 nServers = j; /* update the server count */
377 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
378 name[VL_MAXNAMELEN - 1] = '\0';
383 /* decode the response */
384 lock_ObtainWrite(&cm_volumeLock);
385 if (cm_VolNameIsID(volp->namep)) {
390 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
391 name[len - 7] = '\0';
392 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
393 name[len - 9] = '\0';
396 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s", volp->namep, name);
398 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
399 cm_RemoveVolumeFromNameHashTable(volp);
401 strcpy(volp->namep, name);
403 cm_AddVolumeToNameHashTable(volp);
406 if (flags & VLF_RWEXISTS) {
407 if (volp->rw.ID != rwID) {
408 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
409 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
411 cm_AddVolumeToIDHashTable(volp, RWVOL);
414 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
415 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
418 if (flags & VLF_ROEXISTS) {
419 if (volp->ro.ID != roID) {
420 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
421 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
423 cm_AddVolumeToIDHashTable(volp, ROVOL);
426 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
427 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
430 if (flags & VLF_BACKEXISTS) {
431 if (volp->bk.ID != bkID) {
432 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
433 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
435 cm_AddVolumeToIDHashTable(volp, BACKVOL);
438 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
439 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
442 lock_ReleaseWrite(&cm_volumeLock);
443 for (i=0; i<nServers; i++) {
444 /* create a server entry */
445 tflags = serverFlags[i];
446 if (tflags & VLSF_DONTUSE)
448 tsockAddr.sin_family = AF_INET;
449 tempAddr = htonl(serverNumber[i]);
450 tsockAddr.sin_addr.s_addr = tempAddr;
451 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
453 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
456 /* if this server was created by fs setserverprefs */
460 osi_assertx(tsp != NULL, "null cm_server_t");
462 /* and add it to the list(s). */
464 * Each call to cm_NewServerRef() increments the
465 * ref count of tsp. These reference will be dropped,
466 * if and when the volume is reset; see reset code
467 * earlier in this function.
469 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
470 tsrp = cm_NewServerRef(tsp, rwID);
471 cm_InsertServerList(&volp->rw.serversp, tsrp);
473 lock_ObtainWrite(&cm_serverLock);
474 tsrp->refCount--; /* drop allocation reference */
475 lock_ReleaseWrite(&cm_serverLock);
477 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
478 rwServers_alldown = 0;
480 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
481 tsrp = cm_NewServerRef(tsp, roID);
482 cm_InsertServerList(&volp->ro.serversp, tsrp);
483 lock_ObtainWrite(&cm_serverLock);
484 tsrp->refCount--; /* drop allocation reference */
485 lock_ReleaseWrite(&cm_serverLock);
488 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
489 roServers_alldown = 0;
491 /* We don't use VLSF_BACKVOL !?! */
492 /* Because only the backup on the server holding the RW
493 * volume can be valid. This check prevents errors if a
494 * RW is moved but the old backup is not removed.
496 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
497 tsrp = cm_NewServerRef(tsp, bkID);
498 cm_InsertServerList(&volp->bk.serversp, tsrp);
499 lock_ObtainWrite(&cm_serverLock);
500 tsrp->refCount--; /* drop allocation reference */
501 lock_ReleaseWrite(&cm_serverLock);
503 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
504 bkServers_alldown = 0;
506 /* Drop the reference obtained by cm_FindServer() */
513 * If the first n servers have the same ipRank, then we
514 * randomly pick one among them and move it to the beginning.
515 * We don't bother to re-order the whole list because
516 * the rest of the list is used only if the first server is
517 * down. We only do this for the RO list; we assume the other
518 * lists are length 1.
521 cm_RandomizeServer(&volp->ro.serversp);
524 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
525 roNewstate = roServers_alldown ? vl_alldown : vl_online;
526 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
527 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT) {
528 /* this volume does not exist - we should discard it */
529 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
530 cm_RemoveVolumeFromNameHashTable(volp);
531 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
532 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
533 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
534 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
535 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
536 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
538 /* Move to the end so it will be recycled first */
539 cm_MoveVolumeToLRULast(volp);
542 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_alldown);
544 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_alldown);
546 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_alldown);
548 volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
549 volp->dotdotFid.cell = 0;
550 volp->dotdotFid.volume = 0;
551 volp->dotdotFid.unique = 0;
552 volp->dotdotFid.vnode = 0;
553 volp->dotdotFid.hash = 0;
554 volp->namep[0] ='\0';
556 rwNewstate = roNewstate = bkNewstate = vl_alldown;
559 if (volp->rw.state != rwNewstate) {
561 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, rwNewstate);
562 volp->rw.state = rwNewstate;
564 if (volp->ro.state != roNewstate) {
566 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, roNewstate);
567 volp->ro.state = roNewstate;
569 if (volp->bk.state != bkNewstate) {
571 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, bkNewstate);
572 volp->bk.state = bkNewstate;
578 /* Requires read or write lock on cm_volumeLock */
579 void cm_GetVolume(cm_volume_t *volp)
581 InterlockedIncrement(&volp->refCount);
585 long cm_GetVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
586 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
589 #ifdef SEARCH_ALL_VOLUMES
592 char volNameString[VL_MAXNAMELEN];
596 lock_ObtainRead(&cm_volumeLock);
597 #ifdef SEARCH_ALL_VOLUMES
598 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
599 if (cellp == volp->cellp &&
600 ((unsigned) volumeID == volp->rw.ID ||
601 (unsigned) volumeID == volp->ro.ID ||
602 (unsigned) volumeID == volp->bk.ID))
607 #endif /* SEARCH_ALL_VOLUMES */
609 hash = CM_VOLUME_ID_HASH(volumeID);
610 /* The volumeID can be any one of the three types. So we must
611 * search the hash table for all three types until we find it.
612 * We will search in the order of RO, RW, BK.
614 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
615 if ( cellp == volp->cellp && volumeID == volp->ro.ID )
620 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
621 if ( cellp == volp->cellp && volumeID == volp->rw.ID )
627 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
628 if ( cellp == volp->cellp && volumeID == volp->bk.ID )
633 #ifdef SEARCH_ALL_VOLUMES
634 osi_assertx(volp == volp2, "unexpected cm_vol_t");
637 /* hold the volume if we found it */
641 lock_ReleaseRead(&cm_volumeLock);
645 lock_ObtainMutex(&volp->mx);
648 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
649 code = cm_UpdateVolume(cellp, userp, reqp, volp);
651 volp->flags &= ~CM_VOLUMEFLAG_RESET;
653 lock_ReleaseMutex(&volp->mx);
657 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
658 lock_ObtainWrite(&cm_volumeLock);
659 cm_AdjustVolumeLRU(volp);
660 lock_ReleaseWrite(&cm_volumeLock);
668 /* otherwise, we didn't find it so consult the VLDB */
669 sprintf(volNameString, "%u", volumeID);
670 code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
676 long cm_GetVolumeByName(struct cm_cell *cellp, char *volumeNamep,
677 struct cm_user *userp, struct cm_req *reqp,
678 afs_uint32 flags, cm_volume_t **outVolpp)
681 #ifdef SEARCH_ALL_VOLUMES
685 char name[VL_MAXNAMELEN];
690 strncpy(name, volumeNamep, VL_MAXNAMELEN);
691 name[VL_MAXNAMELEN-1] = '\0';
694 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
696 name[len - 7] = '\0';
697 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
699 name[len - 9] = '\0';
704 lock_ObtainRead(&cm_volumeLock);
705 #ifdef SEARCH_ALL_VOLUMES
706 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
707 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
712 #endif /* SEARCH_ALL_VOLUMES */
714 hash = CM_VOLUME_NAME_HASH(name);
715 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
716 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
720 #ifdef SEARCH_ALL_VOLUMES
721 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
724 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
725 /* otherwise, get from VLDB */
727 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
729 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
730 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
731 if ( volp->refCount == 0 ) {
732 /* There is one we can re-use */
737 for ( volp = cm_data.volumeLRULastp;
739 volp = (cm_volume_t *) osi_QPrev(&volp->q))
741 if ( volp->refCount == 0 ) {
742 /* There is one we can re-use */
748 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
750 lock_ReleaseRead(&cm_volumeLock);
751 lock_ObtainMutex(&volp->mx);
752 lock_ObtainWrite(&cm_volumeLock);
754 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
755 volp->cellp->name, volp->namep);
757 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
758 cm_RemoveVolumeFromLRU(volp);
759 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
760 cm_RemoveVolumeFromNameHashTable(volp);
761 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
762 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
763 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
764 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
765 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
766 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
769 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
771 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
773 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
775 volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
776 volp->dotdotFid.cell = 0;
777 volp->dotdotFid.volume = 0;
778 volp->dotdotFid.unique = 0;
779 volp->dotdotFid.vnode = 0;
780 volp->dotdotFid.hash = 0;
782 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
783 memset(volp, 0, sizeof(cm_volume_t));
784 volp->magic = CM_VOLUME_MAGIC;
785 volp->allNextp = cm_data.allVolumesp;
786 cm_data.allVolumesp = volp;
787 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
788 lock_ReleaseRead(&cm_volumeLock);
789 lock_ObtainMutex(&volp->mx);
790 lock_ObtainWrite(&cm_volumeLock);
793 strncpy(volp->namep, name, VL_MAXNAMELEN);
794 volp->namep[VL_MAXNAMELEN-1] = '\0';
795 volp->refCount = 1; /* starts off held */
796 volp->flags = CM_VOLUMEFLAG_RESET;
797 volp->rw.state = volp->ro.state = volp->bk.state = vl_unknown;
798 volp->rw.nextp = volp->ro.nextp = volp->bk.nextp = NULL;
799 volp->rw.flags = volp->ro.flags = volp->bk.flags = 0;
800 volp->cbExpiresRO = 0;
801 cm_AddVolumeToNameHashTable(volp);
802 lock_ReleaseWrite(&cm_volumeLock);
807 lock_ReleaseRead(&cm_volumeLock);
810 return CM_ERROR_NOSUCHVOLUME;
812 lock_ObtainMutex(&volp->mx);
815 /* if we get here we are holding the mutex */
816 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
817 code = cm_UpdateVolume(cellp, userp, reqp, volp);
819 volp->flags &= ~CM_VOLUMEFLAG_RESET;
821 lock_ReleaseMutex(&volp->mx);
823 if (code == 0 && (type == BACKVOL && volp->bk.ID == 0 ||
824 type == ROVOL && volp->ro.ID == 0))
825 code = CM_ERROR_NOSUCHVOLUME;
830 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
831 lock_ObtainWrite(&cm_volumeLock);
832 cm_AdjustVolumeLRU(volp);
833 lock_ReleaseWrite(&cm_volumeLock);
841 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
845 #ifdef SEARCH_ALL_VOLUMES
852 cellp = cm_FindCellByID(fidp->cell, 0);
855 /* search for the volume */
856 lock_ObtainRead(&cm_volumeLock);
857 #ifdef SEARCH_ALL_VOLUMES
858 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
859 if (cellp == volp->cellp &&
860 (fidp->volume == volp->rw.ID ||
861 fidp->volume == volp->ro.ID ||
862 fidp->volume == volp->bk.ID))
865 #endif /* SEARCH_ALL_VOLUMES */
867 hash = CM_VOLUME_ID_HASH(fidp->volume);
868 /* The volumeID can be any one of the three types. So we must
869 * search the hash table for all three types until we find it.
870 * We will search in the order of RO, RW, BK.
872 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
873 if ( cellp == volp->cellp && fidp->volume == volp->ro.ID )
878 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
879 if ( cellp == volp->cellp && fidp->volume == volp->rw.ID )
885 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
886 if ( cellp == volp->cellp && fidp->volume == volp->bk.ID )
891 #ifdef SEARCH_ALL_VOLUMES
892 osi_assertx(volp == volp2, "unexpected cm_vol_t");
894 /* hold the volume if we found it */
898 lock_ReleaseRead(&cm_volumeLock);
901 cm_data.mountRootGen = time(NULL);
902 lock_ObtainMutex(&volp->mx);
903 volp->flags |= CM_VOLUMEFLAG_RESET;
905 /* Mark the volume to be updated but don't update it now.
906 * This function is called only from within cm_Analyze
907 * when cm_ConnByMServers has failed with all servers down
908 * The problem is that cm_UpdateVolume is going to call
909 * cm_ConnByMServers which may cause a recursive chain
910 * of calls each returning a retry on failure.
911 * Instead, set the flag so the next time the volume is
912 * accessed by Name or ID the UpdateVolume call will
915 code = cm_UpdateVolume(cellp, userp, reqp, volp);
917 volp->flags &= ~CM_VOLUMEFLAG_RESET;
919 lock_ReleaseMutex(&volp->mx);
924 /* find the appropriate servers from a volume */
925 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
927 cm_serverRef_t **serverspp;
928 cm_serverRef_t *current;;
930 lock_ObtainWrite(&cm_serverLock);
932 if (volume == volp->rw.ID)
933 serverspp = &volp->rw.serversp;
934 else if (volume == volp->ro.ID)
935 serverspp = &volp->ro.serversp;
936 else if (volume == volp->bk.ID)
937 serverspp = &volp->bk.serversp;
939 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
941 for (current = *serverspp; current; current = current->next)
944 lock_ReleaseWrite(&cm_serverLock);
949 void cm_PutVolume(cm_volume_t *volp)
951 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
952 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
955 /* return the read-only volume, if there is one, or the read-write volume if
958 long cm_GetROVolumeID(cm_volume_t *volp)
962 lock_ObtainMutex(&volp->mx);
963 if (volp->ro.ID && volp->ro.serversp)
967 lock_ReleaseMutex(&volp->mx);
972 void cm_RefreshVolumes(void)
978 cm_data.mountRootGen = time(NULL);
980 /* force a re-loading of volume data from the vldb */
981 lock_ObtainRead(&cm_volumeLock);
982 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
983 InterlockedIncrement(&volp->refCount);
984 lock_ReleaseRead(&cm_volumeLock);
986 lock_ObtainMutex(&volp->mx);
987 volp->flags |= CM_VOLUMEFLAG_RESET;
988 lock_ReleaseMutex(&volp->mx);
990 lock_ObtainRead(&cm_volumeLock);
991 refCount = InterlockedDecrement(&volp->refCount);
992 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
994 lock_ReleaseRead(&cm_volumeLock);
996 /* force mount points to be re-evaluated so that
997 * if the volume location has changed we will pick
1000 for ( scp = cm_data.scacheLRUFirstp;
1002 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1003 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1004 #ifdef AFS_FREELANCE_CLIENT
1005 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1008 lock_ObtainWrite(&scp->rw);
1009 scp->mountPointStringp[0] = '\0';
1010 lock_ReleaseWrite(&scp->rw);
1017 /* The return code is 0 if the volume is not online and
1018 * 1 if the volume is online
1021 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1025 AFSFetchVolumeStatus volStat;
1030 struct rx_connection * callp;
1032 char offLineMsg[256];
1035 cm_serverRef_t *serversp;
1038 OfflineMsg = offLineMsg;
1041 lock_ObtainMutex(&volp->mx);
1043 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1045 code = cm_UpdateVolume(volp->cellp, cm_rootUserp, &req, volp);
1047 volp->flags &= ~CM_VOLUMEFLAG_RESET;
1050 if (volp->rw.ID != 0 && (!volID || volID == volp->rw.ID) &&
1051 volp->rw.serversp &&
1052 (volp->rw.state == vl_busy || volp->rw.state == vl_offline || volp->rw.state == vl_unknown)) {
1055 for (serversp = volp->rw.serversp; serversp; serversp = serversp->next) {
1056 if (serversp->status == srv_busy || serversp->status == srv_offline)
1057 serversp->status = srv_not_busy;
1060 lock_ReleaseMutex(&volp->mx);
1062 code = cm_ConnFromVolume(volp, volp->rw.ID, cm_rootUserp, &req, &connp);
1066 callp = cm_GetRxConn(connp);
1067 code = RXAFS_GetVolumeStatus(callp, volp->rw.ID,
1068 &volStat, &Name, &OfflineMsg, &MOTD);
1069 rx_PutConnection(callp);
1071 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1072 code = cm_MapRPCError(code, &req);
1074 lock_ObtainMutex(&volp->mx);
1075 if (code == 0 && volStat.Online) {
1076 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_online);
1077 volp->rw.state = vl_online;
1079 } else if (code == CM_ERROR_NOACCESS) {
1080 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
1081 volp->rw.state = vl_unknown;
1086 if (volp->ro.ID != 0 && (!volID || volID == volp->ro.ID) &&
1087 volp->ro.serversp &&
1088 (volp->ro.state == vl_busy || volp->ro.state == vl_offline || volp->ro.state == vl_unknown)) {
1091 for (serversp = volp->ro.serversp; serversp; serversp = serversp->next) {
1092 if (serversp->status == srv_busy || serversp->status == srv_offline)
1093 serversp->status = srv_not_busy;
1096 lock_ReleaseMutex(&volp->mx);
1098 code = cm_ConnFromVolume(volp, volp->ro.ID, cm_rootUserp, &req, &connp);
1102 callp = cm_GetRxConn(connp);
1103 code = RXAFS_GetVolumeStatus(callp, volp->ro.ID,
1104 &volStat, &Name, &OfflineMsg, &MOTD);
1105 rx_PutConnection(callp);
1107 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1108 code = cm_MapRPCError(code, &req);
1110 lock_ObtainMutex(&volp->mx);
1111 if (code == 0 && volStat.Online) {
1112 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_online);
1113 volp->ro.state = vl_online;
1115 } else if (code == CM_ERROR_NOACCESS) {
1116 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
1117 volp->ro.state = vl_unknown;
1122 if (volp->bk.ID != 0 && (!volID || volID == volp->bk.ID) &&
1123 volp->bk.serversp &&
1124 (volp->bk.state == vl_busy || volp->bk.state == vl_offline || volp->bk.state == vl_unknown)) {
1127 for (serversp = volp->bk.serversp; serversp; serversp = serversp->next) {
1128 if (serversp->status == srv_busy || serversp->status == srv_offline)
1129 serversp->status = srv_not_busy;
1132 lock_ReleaseMutex(&volp->mx);
1134 code = cm_ConnFromVolume(volp, volp->bk.ID, cm_rootUserp, &req, &connp);
1138 callp = cm_GetRxConn(connp);
1139 code = RXAFS_GetVolumeStatus(callp, volp->bk.ID,
1140 &volStat, &Name, &OfflineMsg, &MOTD);
1141 rx_PutConnection(callp);
1143 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1144 code = cm_MapRPCError(code, &req);
1146 lock_ObtainMutex(&volp->mx);
1147 if (code == 0 && volStat.Online) {
1148 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_online);
1149 volp->bk.state = vl_online;
1151 } else if (code == CM_ERROR_NOACCESS) {
1152 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
1153 volp->bk.state = vl_unknown;
1158 lock_ReleaseMutex(&volp->mx);
1163 /* called from the Daemon thread */
1164 void cm_CheckOfflineVolumes(void)
1169 lock_ObtainRead(&cm_volumeLock);
1170 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1171 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1172 InterlockedIncrement(&volp->refCount);
1173 lock_ReleaseRead(&cm_volumeLock);
1174 cm_CheckOfflineVolume(volp, 0);
1175 lock_ObtainRead(&cm_volumeLock);
1176 refCount = InterlockedDecrement(&volp->refCount);
1177 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1180 lock_ReleaseRead(&cm_volumeLock);
1185 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1187 enum volstatus newStatus;
1188 cm_serverRef_t *tsrp;
1190 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1192 if (!volp || !statep) {
1199 lock_ObtainWrite(&cm_serverLock);
1200 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1202 cm_GetServerNoLock(tsp);
1203 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1205 if (tsrp->status == srv_busy) {
1208 } else if (tsrp->status == srv_offline) {
1216 cm_PutServerNoLock(tsp);
1218 lock_ReleaseWrite(&cm_serverLock);
1221 newStatus = vl_alldown;
1222 else if (allBusy || (someBusy && someOffline))
1223 newStatus = vl_busy;
1224 else if (allOffline)
1225 newStatus = vl_offline;
1227 newStatus = vl_online;
1229 if (statep->ID && statep->state != newStatus)
1230 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1232 statep->state = newStatus;
1236 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1239 if (volp->rw.ID == volID) {
1240 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1241 } else if (volp->ro.ID == volID) {
1242 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1243 } else if (volp->bk.ID == volID) {
1244 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1247 * If we are called with volID == 0 then something has gone wrong.
1248 * Most likely a race occurred in the server volume list maintenance.
1249 * Since we don't know which volume's status should be updated,
1250 * just update all of them that are known to exist. Better to be
1251 * correct than fast.
1253 if (volp->rw.ID != 0)
1254 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1255 if (volp->ro.ID != 0)
1256 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1257 if (volp->bk.ID != 0)
1258 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1263 ** Finds all volumes that reside on this server and reorders their
1264 ** RO list according to the changed rank of server.
1266 void cm_ChangeRankVolume(cm_server_t *tsp)
1272 /* find volumes which might have RO copy on server*/
1273 lock_ObtainRead(&cm_volumeLock);
1274 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1276 code = 1 ; /* assume that list is unchanged */
1277 InterlockedIncrement(&volp->refCount);
1278 lock_ReleaseRead(&cm_volumeLock);
1279 lock_ObtainMutex(&volp->mx);
1281 if ((tsp->cellp==volp->cellp) && (volp->ro.serversp))
1282 code =cm_ChangeRankServer(&volp->ro.serversp, tsp);
1284 /* this volume list was changed */
1286 cm_RandomizeServer(&volp->ro.serversp);
1288 lock_ReleaseMutex(&volp->mx);
1289 lock_ObtainRead(&cm_volumeLock);
1290 refCount = InterlockedDecrement(&volp->refCount);
1291 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1293 lock_ReleaseRead(&cm_volumeLock);
1296 /* dump all volumes that have reference count > 0 to a file.
1297 * cookie is used to identify this batch for easy parsing,
1298 * and it a string provided by a caller
1300 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1307 lock_ObtainRead(&cm_scacheLock);
1308 lock_ObtainRead(&cm_volumeLock);
1311 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1312 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1314 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1319 for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
1321 if (scp->volp == volp)
1325 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%u scpRefs=%u\r\n",
1326 cookie, volp, volp->cellp->name, volp->namep, volp->rw.ID, volp->ro.ID, volp->bk.ID, volp->flags,
1327 volp->dotdotFid.cell, volp->dotdotFid.volume, volp->dotdotFid.vnode, volp->dotdotFid.unique,
1328 volp->refCount, scprefs);
1329 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1331 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1332 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1335 lock_ReleaseRead(&cm_volumeLock);
1336 lock_ReleaseRead(&cm_scacheLock);
1343 * String hash function used by SDBM project.
1344 * It was chosen because it is fast and provides
1347 afs_uint32 SDBMHash(const char * str)
1349 afs_uint32 hash = 0;
1355 for(i = 0, len = strlen(str); i < len; i++)
1357 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1360 return (hash & 0x7FFFFFFF);
1363 /* call with volume write-locked and mutex held */
1364 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1368 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1371 i = CM_VOLUME_NAME_HASH(volp->namep);
1373 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1374 cm_data.volumeNameHashTablep[i] = volp;
1375 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1378 /* call with volume write-locked and mutex held */
1379 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1381 cm_volume_t **lvolpp;
1385 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1386 /* hash it out first */
1387 i = CM_VOLUME_NAME_HASH(volp->namep);
1388 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1390 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1391 if (tvolp == volp) {
1392 *lvolpp = volp->nameNextp;
1393 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1394 volp->nameNextp = NULL;
1401 /* call with volume write-locked and mutex held */
1402 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1405 struct cm_vol_state * statep;
1421 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1424 i = CM_VOLUME_ID_HASH(statep->ID);
1428 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1429 cm_data.volumeRWIDHashTablep[i] = volp;
1432 statep->nextp = cm_data.volumeROIDHashTablep[i];
1433 cm_data.volumeROIDHashTablep[i] = volp;
1436 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1437 cm_data.volumeBKIDHashTablep[i] = volp;
1440 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1444 /* call with volume write-locked and mutex held */
1445 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1447 cm_volume_t **lvolpp;
1449 struct cm_vol_state * statep;
1466 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1467 /* hash it out first */
1468 i = CM_VOLUME_ID_HASH(statep->ID);
1472 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1473 tvolp = cm_data.volumeRWIDHashTablep[i];
1476 lvolpp = &cm_data.volumeROIDHashTablep[i];
1477 tvolp = cm_data.volumeROIDHashTablep[i];
1480 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1481 tvolp = cm_data.volumeBKIDHashTablep[i];
1485 if (tvolp == volp) {
1486 *lvolpp = statep->nextp;
1487 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1488 statep->nextp = NULL;
1494 lvolpp = &tvolp->rw.nextp;
1495 tvolp = tvolp->rw.nextp;
1498 lvolpp = &tvolp->ro.nextp;
1499 tvolp = tvolp->ro.nextp;
1502 lvolpp = &tvolp->bk.nextp;
1503 tvolp = tvolp->bk.nextp;
1510 /* must be called with cm_volumeLock write-locked! */
1511 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1513 if (volp == cm_data.volumeLRULastp)
1514 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1515 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1516 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1517 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1518 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1519 if (!cm_data.volumeLRULastp)
1520 cm_data.volumeLRULastp = volp;
1523 /* must be called with cm_volumeLock write-locked! */
1524 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1526 if (volp == cm_data.volumeLRULastp)
1529 if (volp == cm_data.volumeLRUFirstp)
1530 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1531 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1532 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1533 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1534 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1535 if (!cm_data.volumeLRULastp)
1536 cm_data.volumeLRULastp = volp;
1539 /* must be called with cm_volumeLock write-locked! */
1540 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1542 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1543 if (volp == cm_data.volumeLRULastp)
1544 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1545 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1546 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1550 static char * volstatus_str(enum volstatus vs)
1566 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1568 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1571 if (volID == volp->rw.ID)
1573 else if (volID == volp->ro.ID)
1575 else if (volID == volp->bk.ID)
1579 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1581 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1582 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1584 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1587 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1589 if (volp->rw.ID == volID) {
1590 return volp->rw.state;
1591 } else if (volp->ro.ID == volID) {
1592 return volp->ro.state;
1593 } else if (volp->bk.ID == volID) {
1594 return volp->bk.state;
1600 /* Renew .readonly volume callbacks that are more than
1601 * 30 minutes old. (A volume callback is issued for 2 hours.)
1604 cm_VolumeRenewROCallbacks(void)
1607 time_t minexp = time(NULL) + 90 * 60;
1609 lock_ObtainRead(&cm_volumeLock);
1610 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1611 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1616 cm_SetFid(&fid, volp->cellp->cellID, volp->ro.ID, 1, 1);
1620 lock_ReleaseRead(&cm_volumeLock);
1621 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1622 lock_ObtainWrite(&scp->rw);
1623 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1624 lock_ReleaseWrite(&scp->rw);
1625 cm_ReleaseSCache(scp);
1627 lock_ObtainRead(&cm_volumeLock);
1630 lock_ReleaseRead(&cm_volumeLock);