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, name);
257 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
261 code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
263 if ( code == RXGEN_OPCODE )
266 code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
269 if ( code == RXGEN_OPCODE ) {
270 code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
273 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
274 code = cm_MapVLRPCError(code, reqp);
276 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
277 volp->cellp->name, name, code);
279 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
280 volp->cellp->name, name);
289 afs_int32 serverNumber[NMAXNSERVERS];
290 afs_int32 serverFlags[NMAXNSERVERS];
291 afs_int32 rwServers_alldown = 1;
292 afs_int32 roServers_alldown = 1;
293 afs_int32 bkServers_alldown = 1;
294 char name[VL_MAXNAMELEN];
296 #ifdef AFS_FREELANCE_CLIENT
298 rwServers_alldown = 0;
303 flags = vldbEntry.flags;
304 nServers = vldbEntry.nServers;
305 rwID = vldbEntry.volumeId[0];
306 roID = vldbEntry.volumeId[1];
307 bkID = vldbEntry.volumeId[2];
308 for ( i=0; i<nServers; i++ ) {
309 serverFlags[i] = vldbEntry.serverFlags[i];
310 serverNumber[i] = vldbEntry.serverNumber[i];
312 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
313 name[VL_MAXNAMELEN - 1] = '\0';
316 flags = nvldbEntry.flags;
317 nServers = nvldbEntry.nServers;
318 rwID = nvldbEntry.volumeId[0];
319 roID = nvldbEntry.volumeId[1];
320 bkID = nvldbEntry.volumeId[2];
321 for ( i=0; i<nServers; i++ ) {
322 serverFlags[i] = nvldbEntry.serverFlags[i];
323 serverNumber[i] = nvldbEntry.serverNumber[i];
325 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
326 name[VL_MAXNAMELEN - 1] = '\0';
330 flags = uvldbEntry.flags;
331 nServers = uvldbEntry.nServers;
332 rwID = uvldbEntry.volumeId[0];
333 roID = uvldbEntry.volumeId[1];
334 bkID = uvldbEntry.volumeId[2];
335 for ( i=0, j=0; i<nServers && j<NMAXNSERVERS; i++ ) {
336 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
337 serverFlags[j] = uvldbEntry.serverFlags[i];
338 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
341 afs_uint32 * addrp, nentries, code, unique;
343 ListAddrByAttributes attrs;
346 memset((char *)&attrs, 0, sizeof(attrs));
347 attrs.Mask = VLADDR_UUID;
348 attrs.uuid = uvldbEntry.serverNumber[i];
349 memset((char *)&uuid, 0, sizeof(uuid));
350 memset((char *)&addrs, 0, sizeof(addrs));
353 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
357 code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
359 if (code == 0 && nentries == 0)
361 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
362 code = cm_MapVLRPCError(code, reqp);
366 addrp = addrs.bulkaddrs_val;
367 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
368 serverFlags[j] = uvldbEntry.serverFlags[i];
369 serverNumber[j] = addrp[k];
372 free(addrs.bulkaddrs_val); /* This is wrong */
375 nServers = j; /* update the server count */
376 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
377 name[VL_MAXNAMELEN - 1] = '\0';
382 /* decode the response */
383 lock_ObtainWrite(&cm_volumeLock);
384 if (cm_VolNameIsID(volp->namep)) {
389 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
390 name[len - 7] = '\0';
391 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
392 name[len - 9] = '\0';
395 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s", volp->namep, name);
397 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
398 cm_RemoveVolumeFromNameHashTable(volp);
400 strcpy(volp->namep, name);
402 cm_AddVolumeToNameHashTable(volp);
405 if (flags & VLF_RWEXISTS) {
406 if (volp->rw.ID != rwID) {
407 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
408 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
410 cm_AddVolumeToIDHashTable(volp, RWVOL);
413 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
414 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
417 if (flags & VLF_ROEXISTS) {
418 if (volp->ro.ID != roID) {
419 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
420 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
422 cm_AddVolumeToIDHashTable(volp, ROVOL);
425 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
426 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
429 if (flags & VLF_BACKEXISTS) {
430 if (volp->bk.ID != bkID) {
431 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
432 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
434 cm_AddVolumeToIDHashTable(volp, BACKVOL);
437 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
438 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
441 lock_ReleaseWrite(&cm_volumeLock);
442 for (i=0; i<nServers; i++) {
443 /* create a server entry */
444 tflags = serverFlags[i];
445 if (tflags & VLSF_DONTUSE)
447 tsockAddr.sin_family = AF_INET;
448 tempAddr = htonl(serverNumber[i]);
449 tsockAddr.sin_addr.s_addr = tempAddr;
450 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
452 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
455 /* if this server was created by fs setserverprefs */
459 osi_assertx(tsp != NULL, "null cm_server_t");
461 /* and add it to the list(s). */
463 * Each call to cm_NewServerRef() increments the
464 * ref count of tsp. These reference will be dropped,
465 * if and when the volume is reset; see reset code
466 * earlier in this function.
468 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
469 tsrp = cm_NewServerRef(tsp, rwID);
470 cm_InsertServerList(&volp->rw.serversp, tsrp);
472 lock_ObtainWrite(&cm_serverLock);
473 tsrp->refCount--; /* drop allocation reference */
474 lock_ReleaseWrite(&cm_serverLock);
476 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
477 rwServers_alldown = 0;
479 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
480 tsrp = cm_NewServerRef(tsp, roID);
481 cm_InsertServerList(&volp->ro.serversp, tsrp);
482 lock_ObtainWrite(&cm_serverLock);
483 tsrp->refCount--; /* drop allocation reference */
484 lock_ReleaseWrite(&cm_serverLock);
487 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
488 roServers_alldown = 0;
490 /* We don't use VLSF_BACKVOL !?! */
491 /* Because only the backup on the server holding the RW
492 * volume can be valid. This check prevents errors if a
493 * RW is moved but the old backup is not removed.
495 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
496 tsrp = cm_NewServerRef(tsp, bkID);
497 cm_InsertServerList(&volp->bk.serversp, tsrp);
498 lock_ObtainWrite(&cm_serverLock);
499 tsrp->refCount--; /* drop allocation reference */
500 lock_ReleaseWrite(&cm_serverLock);
502 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
503 bkServers_alldown = 0;
505 /* Drop the reference obtained by cm_FindServer() */
512 * If the first n servers have the same ipRank, then we
513 * randomly pick one among them and move it to the beginning.
514 * We don't bother to re-order the whole list because
515 * the rest of the list is used only if the first server is
516 * down. We only do this for the RO list; we assume the other
517 * lists are length 1.
520 cm_RandomizeServer(&volp->ro.serversp);
523 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
524 roNewstate = roServers_alldown ? vl_alldown : vl_online;
525 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
527 rwNewstate = roNewstate = bkNewstate = vl_alldown;
530 if (volp->rw.state != rwNewstate) {
532 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, rwNewstate);
533 volp->rw.state = rwNewstate;
535 if (volp->ro.state != roNewstate) {
537 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, roNewstate);
538 volp->ro.state = roNewstate;
540 if (volp->bk.state != bkNewstate) {
542 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, bkNewstate);
543 volp->bk.state = bkNewstate;
549 void cm_GetVolume(cm_volume_t *volp)
552 lock_ObtainWrite(&cm_volumeLock);
554 lock_ReleaseWrite(&cm_volumeLock);
559 long cm_GetVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
560 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
563 #ifdef SEARCH_ALL_VOLUMES
566 char volNameString[VL_MAXNAMELEN];
570 lock_ObtainRead(&cm_volumeLock);
571 #ifdef SEARCH_ALL_VOLUMES
572 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
573 if (cellp == volp->cellp &&
574 ((unsigned) volumeID == volp->rw.ID ||
575 (unsigned) volumeID == volp->ro.ID ||
576 (unsigned) volumeID == volp->bk.ID))
581 #endif /* SEARCH_ALL_VOLUMES */
583 hash = CM_VOLUME_ID_HASH(volumeID);
584 /* The volumeID can be any one of the three types. So we must
585 * search the hash table for all three types until we find it.
586 * We will search in the order of RO, RW, BK.
588 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
589 if ( cellp == volp->cellp && volumeID == volp->ro.ID )
594 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
595 if ( cellp == volp->cellp && volumeID == volp->rw.ID )
601 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
602 if ( cellp == volp->cellp && volumeID == volp->bk.ID )
607 #ifdef SEARCH_ALL_VOLUMES
608 osi_assertx(volp == volp2, "unexpected cm_vol_t");
611 lock_ReleaseRead(&cm_volumeLock);
613 /* hold the volume if we found it */
619 lock_ObtainMutex(&volp->mx);
622 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
623 code = cm_UpdateVolume(cellp, userp, reqp, volp);
625 volp->flags &= ~CM_VOLUMEFLAG_RESET;
627 lock_ReleaseMutex(&volp->mx);
631 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
632 lock_ObtainWrite(&cm_volumeLock);
633 cm_AdjustVolumeLRU(volp);
634 lock_ReleaseWrite(&cm_volumeLock);
642 /* otherwise, we didn't find it so consult the VLDB */
643 sprintf(volNameString, "%u", volumeID);
644 code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
650 long cm_GetVolumeByName(struct cm_cell *cellp, char *volumeNamep,
651 struct cm_user *userp, struct cm_req *reqp,
652 afs_uint32 flags, cm_volume_t **outVolpp)
655 #ifdef SEARCH_ALL_VOLUMES
659 char name[VL_MAXNAMELEN];
664 strncpy(name, volumeNamep, VL_MAXNAMELEN);
665 name[VL_MAXNAMELEN-1] = '\0';
668 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
670 name[len - 7] = '\0';
671 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
673 name[len - 9] = '\0';
678 lock_ObtainRead(&cm_volumeLock);
679 #ifdef SEARCH_ALL_VOLUMES
680 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
681 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
686 #endif /* SEARCH_ALL_VOLUMES */
688 hash = CM_VOLUME_NAME_HASH(name);
689 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
690 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
694 #ifdef SEARCH_ALL_VOLUMES
695 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
698 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
699 /* otherwise, get from VLDB */
701 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
703 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
704 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
705 if ( volp->refCount == 0 ) {
706 /* There is one we can re-use */
711 for ( volp = cm_data.volumeLRULastp;
713 volp = (cm_volume_t *) osi_QPrev(&volp->q))
715 if ( volp->refCount == 0 ) {
716 /* There is one we can re-use */
722 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
724 lock_ReleaseRead(&cm_volumeLock);
725 lock_ObtainMutex(&volp->mx);
726 lock_ObtainWrite(&cm_volumeLock);
728 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
729 volp->cellp->name, volp->namep);
731 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
732 cm_RemoveVolumeFromLRU(volp);
733 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
734 cm_RemoveVolumeFromNameHashTable(volp);
735 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
736 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
737 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
738 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
739 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
740 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
743 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
745 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
747 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
749 volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
750 volp->dotdotFid.cell = 0;
751 volp->dotdotFid.volume = 0;
752 volp->dotdotFid.unique = 0;
753 volp->dotdotFid.vnode = 0;
754 volp->dotdotFid.hash = 0;
756 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
757 memset(volp, 0, sizeof(cm_volume_t));
758 volp->magic = CM_VOLUME_MAGIC;
759 volp->allNextp = cm_data.allVolumesp;
760 cm_data.allVolumesp = volp;
761 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
762 lock_ReleaseRead(&cm_volumeLock);
763 lock_ObtainMutex(&volp->mx);
764 lock_ObtainWrite(&cm_volumeLock);
767 strncpy(volp->namep, name, VL_MAXNAMELEN);
768 volp->namep[VL_MAXNAMELEN-1] = '\0';
769 volp->refCount = 1; /* starts off held */
770 volp->flags = CM_VOLUMEFLAG_RESET;
771 volp->rw.state = volp->ro.state = volp->bk.state = vl_unknown;
772 volp->rw.nextp = volp->ro.nextp = volp->bk.nextp = NULL;
773 volp->rw.flags = volp->ro.flags = volp->bk.flags = 0;
774 volp->cbExpiresRO = 0;
775 cm_AddVolumeToNameHashTable(volp);
776 lock_ReleaseWrite(&cm_volumeLock);
779 lock_ReleaseRead(&cm_volumeLock);
782 lock_ObtainMutex(&volp->mx);
784 return CM_ERROR_NOSUCHVOLUME;
788 /* if we get here we are holding the mutex */
789 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
790 code = cm_UpdateVolume(cellp, userp, reqp, volp);
792 volp->flags &= ~CM_VOLUMEFLAG_RESET;
794 lock_ReleaseMutex(&volp->mx);
796 if (code == 0 && (type == BACKVOL && volp->bk.ID == 0 ||
797 type == ROVOL && volp->ro.ID == 0))
798 code = CM_ERROR_NOSUCHVOLUME;
803 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
804 lock_ObtainWrite(&cm_volumeLock);
805 cm_AdjustVolumeLRU(volp);
806 lock_ReleaseWrite(&cm_volumeLock);
814 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
818 #ifdef SEARCH_ALL_VOLUMES
825 cellp = cm_FindCellByID(fidp->cell, 0);
828 /* search for the volume */
829 lock_ObtainRead(&cm_volumeLock);
830 #ifdef SEARCH_ALL_VOLUMES
831 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
832 if (cellp == volp->cellp &&
833 (fidp->volume == volp->rw.ID ||
834 fidp->volume == volp->ro.ID ||
835 fidp->volume == volp->bk.ID))
838 #endif /* SEARCH_ALL_VOLUMES */
840 hash = CM_VOLUME_ID_HASH(fidp->volume);
841 /* The volumeID can be any one of the three types. So we must
842 * search the hash table for all three types until we find it.
843 * We will search in the order of RO, RW, BK.
845 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
846 if ( cellp == volp->cellp && fidp->volume == volp->ro.ID )
851 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
852 if ( cellp == volp->cellp && fidp->volume == volp->rw.ID )
858 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
859 if ( cellp == volp->cellp && fidp->volume == volp->bk.ID )
864 #ifdef SEARCH_ALL_VOLUMES
865 osi_assertx(volp == volp2, "unexpected cm_vol_t");
868 lock_ReleaseRead(&cm_volumeLock);
870 /* hold the volume if we found it */
875 cm_data.mountRootGen = time(NULL);
876 lock_ObtainMutex(&volp->mx);
877 volp->flags |= CM_VOLUMEFLAG_RESET;
879 /* Mark the volume to be updated but don't update it now.
880 * This function is called only from within cm_Analyze
881 * when cm_ConnByMServers has failed with all servers down
882 * The problem is that cm_UpdateVolume is going to call
883 * cm_ConnByMServers which may cause a recursive chain
884 * of calls each returning a retry on failure.
885 * Instead, set the flag so the next time the volume is
886 * accessed by Name or ID the UpdateVolume call will
889 code = cm_UpdateVolume(cellp, userp, reqp, volp);
891 volp->flags &= ~CM_VOLUMEFLAG_RESET;
893 lock_ReleaseMutex(&volp->mx);
898 /* find the appropriate servers from a volume */
899 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
901 cm_serverRef_t **serverspp;
902 cm_serverRef_t *current;;
904 lock_ObtainWrite(&cm_serverLock);
906 if (volume == volp->rw.ID)
907 serverspp = &volp->rw.serversp;
908 else if (volume == volp->ro.ID)
909 serverspp = &volp->ro.serversp;
910 else if (volume == volp->bk.ID)
911 serverspp = &volp->bk.serversp;
913 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
915 for (current = *serverspp; current; current = current->next)
918 lock_ReleaseWrite(&cm_serverLock);
923 void cm_PutVolume(cm_volume_t *volp)
925 lock_ObtainWrite(&cm_volumeLock);
926 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
927 lock_ReleaseWrite(&cm_volumeLock);
930 /* return the read-only volume, if there is one, or the read-write volume if
933 long cm_GetROVolumeID(cm_volume_t *volp)
937 lock_ObtainMutex(&volp->mx);
938 if (volp->ro.ID && volp->ro.serversp)
942 lock_ReleaseMutex(&volp->mx);
947 void cm_RefreshVolumes(void)
952 cm_data.mountRootGen = time(NULL);
954 /* force a re-loading of volume data from the vldb */
955 lock_ObtainWrite(&cm_volumeLock);
956 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
958 lock_ReleaseWrite(&cm_volumeLock);
960 lock_ObtainMutex(&volp->mx);
961 volp->flags |= CM_VOLUMEFLAG_RESET;
962 lock_ReleaseMutex(&volp->mx);
964 lock_ObtainWrite(&cm_volumeLock);
965 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
967 lock_ReleaseWrite(&cm_volumeLock);
969 /* force mount points to be re-evaluated so that
970 * if the volume location has changed we will pick
973 for ( scp = cm_data.scacheLRUFirstp;
975 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
976 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
977 #ifdef AFS_FREELANCE_CLIENT
978 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
981 lock_ObtainMutex(&scp->mx);
982 scp->mountPointStringp[0] = '\0';
983 lock_ReleaseMutex(&scp->mx);
990 /* The return code is 0 if the volume is not online and
991 * 1 if the volume is online
994 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
998 AFSFetchVolumeStatus volStat;
1003 struct rx_connection * callp;
1005 char offLineMsg[256];
1008 cm_serverRef_t *serversp;
1011 OfflineMsg = offLineMsg;
1014 lock_ObtainMutex(&volp->mx);
1016 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1018 code = cm_UpdateVolume(volp->cellp, cm_rootUserp, &req, volp);
1020 volp->flags &= ~CM_VOLUMEFLAG_RESET;
1023 if (volp->rw.ID != 0 && (!volID || volID == volp->rw.ID) &&
1024 volp->rw.serversp &&
1025 (volp->rw.state == vl_busy || volp->rw.state == vl_offline || volp->rw.state == vl_unknown)) {
1028 for (serversp = volp->rw.serversp; serversp; serversp = serversp->next) {
1029 if (serversp->status == srv_busy || serversp->status == srv_offline)
1030 serversp->status = srv_not_busy;
1033 lock_ReleaseMutex(&volp->mx);
1035 code = cm_ConnFromVolume(volp, volp->rw.ID, cm_rootUserp, &req, &connp);
1039 callp = cm_GetRxConn(connp);
1040 code = RXAFS_GetVolumeStatus(callp, volp->rw.ID,
1041 &volStat, &Name, &OfflineMsg, &MOTD);
1042 rx_PutConnection(callp);
1044 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1045 code = cm_MapRPCError(code, &req);
1047 lock_ObtainMutex(&volp->mx);
1048 if (code == 0 && volStat.Online) {
1049 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_online);
1050 volp->rw.state = vl_online;
1052 } else if (code == CM_ERROR_NOACCESS) {
1053 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
1054 volp->rw.state = vl_unknown;
1059 if (volp->ro.ID != 0 && (!volID || volID == volp->ro.ID) &&
1060 volp->ro.serversp &&
1061 (volp->ro.state == vl_busy || volp->ro.state == vl_offline || volp->ro.state == vl_unknown)) {
1064 for (serversp = volp->ro.serversp; serversp; serversp = serversp->next) {
1065 if (serversp->status == srv_busy || serversp->status == srv_offline)
1066 serversp->status = srv_not_busy;
1069 lock_ReleaseMutex(&volp->mx);
1071 code = cm_ConnFromVolume(volp, volp->ro.ID, cm_rootUserp, &req, &connp);
1075 callp = cm_GetRxConn(connp);
1076 code = RXAFS_GetVolumeStatus(callp, volp->ro.ID,
1077 &volStat, &Name, &OfflineMsg, &MOTD);
1078 rx_PutConnection(callp);
1080 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1081 code = cm_MapRPCError(code, &req);
1083 lock_ObtainMutex(&volp->mx);
1084 if (code == 0 && volStat.Online) {
1085 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_online);
1086 volp->ro.state = vl_online;
1088 } else if (code == CM_ERROR_NOACCESS) {
1089 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
1090 volp->ro.state = vl_unknown;
1095 if (volp->bk.ID != 0 && (!volID || volID == volp->bk.ID) &&
1096 volp->bk.serversp &&
1097 (volp->bk.state == vl_busy || volp->bk.state == vl_offline || volp->bk.state == vl_unknown)) {
1100 for (serversp = volp->bk.serversp; serversp; serversp = serversp->next) {
1101 if (serversp->status == srv_busy || serversp->status == srv_offline)
1102 serversp->status = srv_not_busy;
1105 lock_ReleaseMutex(&volp->mx);
1107 code = cm_ConnFromVolume(volp, volp->bk.ID, cm_rootUserp, &req, &connp);
1111 callp = cm_GetRxConn(connp);
1112 code = RXAFS_GetVolumeStatus(callp, volp->bk.ID,
1113 &volStat, &Name, &OfflineMsg, &MOTD);
1114 rx_PutConnection(callp);
1116 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1117 code = cm_MapRPCError(code, &req);
1119 lock_ObtainMutex(&volp->mx);
1120 if (code == 0 && volStat.Online) {
1121 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_online);
1122 volp->bk.state = vl_online;
1124 } else if (code == CM_ERROR_NOACCESS) {
1125 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
1126 volp->bk.state = vl_unknown;
1131 lock_ReleaseMutex(&volp->mx);
1136 /* called from the Daemon thread */
1137 void cm_CheckOfflineVolumes(void)
1141 lock_ObtainWrite(&cm_volumeLock);
1142 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1144 lock_ReleaseWrite(&cm_volumeLock);
1146 cm_CheckOfflineVolume(volp, 0);
1148 lock_ObtainWrite(&cm_volumeLock);
1149 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
1151 lock_ReleaseWrite(&cm_volumeLock);
1156 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1158 enum volstatus newStatus;
1159 cm_serverRef_t *tsrp;
1161 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1163 if (!volp || !statep) {
1170 lock_ObtainWrite(&cm_serverLock);
1171 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1173 cm_GetServerNoLock(tsp);
1174 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1176 if (tsrp->status == srv_busy) {
1179 } else if (tsrp->status == srv_offline) {
1187 cm_PutServerNoLock(tsp);
1189 lock_ReleaseWrite(&cm_serverLock);
1192 newStatus = vl_alldown;
1193 else if (allBusy || (someBusy && someOffline))
1194 newStatus = vl_busy;
1195 else if (allOffline)
1196 newStatus = vl_offline;
1198 newStatus = vl_online;
1200 if (statep->ID && statep->state != newStatus)
1201 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1203 statep->state = newStatus;
1207 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1210 if (volp->rw.ID == volID) {
1211 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1212 } else if (volp->ro.ID == volID) {
1213 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1214 } else if (volp->bk.ID == volID) {
1215 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1218 * If we are called with volID == 0 then something has gone wrong.
1219 * Most likely a race occurred in the server volume list maintenance.
1220 * Since we don't know which volume's status should be updated,
1221 * just update all of them that are known to exist. Better to be
1222 * correct than fast.
1224 if (volp->rw.ID != 0)
1225 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1226 if (volp->ro.ID != 0)
1227 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1228 if (volp->bk.ID != 0)
1229 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1234 ** Finds all volumes that reside on this server and reorders their
1235 ** RO list according to the changed rank of server.
1237 void cm_ChangeRankVolume(cm_server_t *tsp)
1242 /* find volumes which might have RO copy on server*/
1243 lock_ObtainWrite(&cm_volumeLock);
1244 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1246 code = 1 ; /* assume that list is unchanged */
1248 lock_ReleaseWrite(&cm_volumeLock);
1249 lock_ObtainMutex(&volp->mx);
1251 if ((tsp->cellp==volp->cellp) && (volp->ro.serversp))
1252 code =cm_ChangeRankServer(&volp->ro.serversp, tsp);
1254 /* this volume list was changed */
1256 cm_RandomizeServer(&volp->ro.serversp);
1258 lock_ReleaseMutex(&volp->mx);
1259 lock_ObtainWrite(&cm_volumeLock);
1260 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
1262 lock_ReleaseWrite(&cm_volumeLock);
1265 /* dump all volumes that have reference count > 0 to a file.
1266 * cookie is used to identify this batch for easy parsing,
1267 * and it a string provided by a caller
1269 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1276 lock_ObtainRead(&cm_scacheLock);
1277 lock_ObtainRead(&cm_volumeLock);
1280 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1281 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1283 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1288 for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
1290 if (scp->volp == volp)
1294 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",
1295 cookie, volp, volp->cellp->name, volp->namep, volp->rw.ID, volp->ro.ID, volp->bk.ID, volp->flags,
1296 volp->dotdotFid.cell, volp->dotdotFid.volume, volp->dotdotFid.vnode, volp->dotdotFid.unique,
1297 volp->refCount, scprefs);
1298 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1300 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1301 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1304 lock_ReleaseRead(&cm_volumeLock);
1305 lock_ReleaseRead(&cm_scacheLock);
1312 * String hash function used by SDBM project.
1313 * It was chosen because it is fast and provides
1316 afs_uint32 SDBMHash(const char * str)
1318 afs_uint32 hash = 0;
1324 for(i = 0, len = strlen(str); i < len; i++)
1326 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1329 return (hash & 0x7FFFFFFF);
1332 /* call with volume write-locked and mutex held */
1333 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1337 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1340 i = CM_VOLUME_NAME_HASH(volp->namep);
1342 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1343 cm_data.volumeNameHashTablep[i] = volp;
1344 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1347 /* call with volume write-locked and mutex held */
1348 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1350 cm_volume_t **lvolpp;
1354 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1355 /* hash it out first */
1356 i = CM_VOLUME_NAME_HASH(volp->namep);
1357 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1359 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1360 if (tvolp == volp) {
1361 *lvolpp = volp->nameNextp;
1362 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1363 volp->nameNextp = NULL;
1370 /* call with volume write-locked and mutex held */
1371 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1374 struct cm_vol_state * statep;
1390 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1393 i = CM_VOLUME_ID_HASH(statep->ID);
1397 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1398 cm_data.volumeRWIDHashTablep[i] = volp;
1401 statep->nextp = cm_data.volumeROIDHashTablep[i];
1402 cm_data.volumeROIDHashTablep[i] = volp;
1405 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1406 cm_data.volumeBKIDHashTablep[i] = volp;
1409 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1413 /* call with volume write-locked and mutex held */
1414 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1416 cm_volume_t **lvolpp;
1418 struct cm_vol_state * statep;
1435 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1436 /* hash it out first */
1437 i = CM_VOLUME_ID_HASH(statep->ID);
1441 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1442 tvolp = cm_data.volumeRWIDHashTablep[i];
1445 lvolpp = &cm_data.volumeROIDHashTablep[i];
1446 tvolp = cm_data.volumeROIDHashTablep[i];
1449 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1450 tvolp = cm_data.volumeBKIDHashTablep[i];
1454 if (tvolp == volp) {
1455 *lvolpp = statep->nextp;
1456 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1457 statep->nextp = NULL;
1463 lvolpp = &tvolp->rw.nextp;
1464 tvolp = tvolp->rw.nextp;
1467 lvolpp = &tvolp->ro.nextp;
1468 tvolp = tvolp->ro.nextp;
1471 lvolpp = &tvolp->bk.nextp;
1472 tvolp = tvolp->bk.nextp;
1479 /* must be called with cm_volumeLock write-locked! */
1480 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1482 if (volp == cm_data.volumeLRULastp)
1483 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1484 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1485 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1486 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1487 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1488 if (!cm_data.volumeLRULastp)
1489 cm_data.volumeLRULastp = volp;
1492 /* must be called with cm_volumeLock write-locked! */
1493 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1495 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1496 if (volp == cm_data.volumeLRULastp)
1497 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1498 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1499 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1503 static char * volstatus_str(enum volstatus vs)
1519 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1521 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1524 if (volID == volp->rw.ID)
1526 else if (volID == volp->ro.ID)
1528 else if (volID == volp->bk.ID)
1532 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1534 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1535 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1537 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1540 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1542 if (volp->rw.ID == volID) {
1543 return volp->rw.state;
1544 } else if (volp->ro.ID == volID) {
1545 return volp->ro.state;
1546 } else if (volp->bk.ID == volID) {
1547 return volp->bk.state;
1553 /* Renew .readonly volume callbacks that are more than
1554 * 30 minutes old. (A volume callback is issued for 2 hours.)
1557 cm_VolumeRenewROCallbacks(void)
1560 time_t minexp = time(NULL) + 90 * 60;
1562 lock_ObtainRead(&cm_volumeLock);
1563 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1564 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1569 cm_SetFid(&fid, volp->cellp->cellID, volp->ro.ID, 1, 1);
1573 lock_ReleaseRead(&cm_volumeLock);
1574 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1575 lock_ObtainMutex(&scp->mx);
1576 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1577 lock_ReleaseMutex(&scp->mx);
1578 cm_ReleaseSCache(scp);
1580 lock_ObtainRead(&cm_volumeLock);
1583 lock_ReleaseRead(&cm_volumeLock);