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 cm_SetFid(&volp->rw.dotdotFid, 0, 0, 0, 0);
550 cm_SetFid(&volp->ro.dotdotFid, 0, 0, 0, 0);
551 cm_SetFid(&volp->bk.dotdotFid, 0, 0, 0, 0);
552 volp->namep[0] ='\0';
554 rwNewstate = roNewstate = bkNewstate = vl_alldown;
557 if (volp->rw.state != rwNewstate) {
559 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, rwNewstate);
560 volp->rw.state = rwNewstate;
562 if (volp->ro.state != roNewstate) {
564 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, roNewstate);
565 volp->ro.state = roNewstate;
567 if (volp->bk.state != bkNewstate) {
569 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, bkNewstate);
570 volp->bk.state = bkNewstate;
576 /* Requires read or write lock on cm_volumeLock */
577 void cm_GetVolume(cm_volume_t *volp)
579 InterlockedIncrement(&volp->refCount);
582 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
587 lock_ObtainRead(&cm_volumeLock);
588 hash = CM_VOLUME_ID_HASH(fidp->volume);
589 /* The volumeID can be any one of the three types. So we must
590 * search the hash table for all three types until we find it.
591 * We will search in the order of RO, RW, BK.
593 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
594 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->ro.ID )
599 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
600 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->rw.ID )
606 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
607 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->bk.ID )
612 /* hold the volume if we found it */
616 lock_ReleaseRead(&cm_volumeLock);
620 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
621 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
624 #ifdef SEARCH_ALL_VOLUMES
627 char volNameString[VL_MAXNAMELEN];
631 lock_ObtainRead(&cm_volumeLock);
632 #ifdef SEARCH_ALL_VOLUMES
633 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
634 if (cellp == volp->cellp &&
635 ((unsigned) volumeID == volp->rw.ID ||
636 (unsigned) volumeID == volp->ro.ID ||
637 (unsigned) volumeID == volp->bk.ID))
642 #endif /* SEARCH_ALL_VOLUMES */
644 hash = CM_VOLUME_ID_HASH(volumeID);
645 /* The volumeID can be any one of the three types. So we must
646 * search the hash table for all three types until we find it.
647 * We will search in the order of RO, RW, BK.
649 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
650 if ( cellp == volp->cellp && volumeID == volp->ro.ID )
655 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
656 if ( cellp == volp->cellp && volumeID == volp->rw.ID )
662 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
663 if ( cellp == volp->cellp && volumeID == volp->bk.ID )
668 #ifdef SEARCH_ALL_VOLUMES
669 osi_assertx(volp == volp2, "unexpected cm_vol_t");
672 /* hold the volume if we found it */
676 lock_ReleaseRead(&cm_volumeLock);
680 lock_ObtainMutex(&volp->mx);
683 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
684 code = cm_UpdateVolume(cellp, userp, reqp, volp);
686 volp->flags &= ~CM_VOLUMEFLAG_RESET;
688 lock_ReleaseMutex(&volp->mx);
692 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
693 lock_ObtainWrite(&cm_volumeLock);
694 cm_AdjustVolumeLRU(volp);
695 lock_ReleaseWrite(&cm_volumeLock);
703 /* otherwise, we didn't find it so consult the VLDB */
704 sprintf(volNameString, "%u", volumeID);
705 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
711 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
712 struct cm_user *userp, struct cm_req *reqp,
713 afs_uint32 flags, cm_volume_t **outVolpp)
716 #ifdef SEARCH_ALL_VOLUMES
720 char name[VL_MAXNAMELEN];
725 strncpy(name, volumeNamep, VL_MAXNAMELEN);
726 name[VL_MAXNAMELEN-1] = '\0';
729 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
731 name[len - 7] = '\0';
732 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
734 name[len - 9] = '\0';
739 lock_ObtainRead(&cm_volumeLock);
740 #ifdef SEARCH_ALL_VOLUMES
741 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
742 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
747 #endif /* SEARCH_ALL_VOLUMES */
749 hash = CM_VOLUME_NAME_HASH(name);
750 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
751 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
755 #ifdef SEARCH_ALL_VOLUMES
756 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
759 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
760 /* otherwise, get from VLDB */
762 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
764 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
765 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
766 if ( volp->refCount == 0 ) {
767 /* There is one we can re-use */
772 for ( volp = cm_data.volumeLRULastp;
774 volp = (cm_volume_t *) osi_QPrev(&volp->q))
776 if ( volp->refCount == 0 ) {
777 /* There is one we can re-use */
783 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
785 lock_ReleaseRead(&cm_volumeLock);
786 lock_ObtainMutex(&volp->mx);
787 lock_ObtainWrite(&cm_volumeLock);
789 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
790 volp->cellp->name, volp->namep);
792 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
793 cm_RemoveVolumeFromLRU(volp);
794 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
795 cm_RemoveVolumeFromNameHashTable(volp);
796 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
797 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
798 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
799 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
800 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
801 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
804 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
806 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
808 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
810 volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
811 cm_SetFid(&volp->rw.dotdotFid, 0, 0, 0, 0);
812 cm_SetFid(&volp->ro.dotdotFid, 0, 0, 0, 0);
813 cm_SetFid(&volp->bk.dotdotFid, 0, 0, 0, 0);
815 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
816 memset(volp, 0, sizeof(cm_volume_t));
817 volp->magic = CM_VOLUME_MAGIC;
818 volp->allNextp = cm_data.allVolumesp;
819 cm_data.allVolumesp = volp;
820 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
821 lock_ReleaseRead(&cm_volumeLock);
822 lock_ObtainMutex(&volp->mx);
823 lock_ObtainWrite(&cm_volumeLock);
826 strncpy(volp->namep, name, VL_MAXNAMELEN);
827 volp->namep[VL_MAXNAMELEN-1] = '\0';
828 volp->refCount = 1; /* starts off held */
829 volp->flags = CM_VOLUMEFLAG_RESET;
830 volp->rw.state = volp->ro.state = volp->bk.state = vl_unknown;
831 volp->rw.nextp = volp->ro.nextp = volp->bk.nextp = NULL;
832 volp->rw.flags = volp->ro.flags = volp->bk.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_ObtainMutex(&volp->mx);
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_UpdateVolume(cellp, userp, reqp, volp);
852 volp->flags &= ~CM_VOLUMEFLAG_RESET;
854 lock_ReleaseMutex(&volp->mx);
856 if (code == 0 && (type == BACKVOL && volp->bk.ID == 0 ||
857 type == ROVOL && volp->ro.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);
874 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
878 #ifdef SEARCH_ALL_VOLUMES
885 cellp = cm_FindCellByID(fidp->cell, 0);
888 /* search for the volume */
889 lock_ObtainRead(&cm_volumeLock);
890 #ifdef SEARCH_ALL_VOLUMES
891 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
892 if (cellp == volp->cellp &&
893 (fidp->volume == volp->rw.ID ||
894 fidp->volume == volp->ro.ID ||
895 fidp->volume == volp->bk.ID))
898 #endif /* SEARCH_ALL_VOLUMES */
900 hash = CM_VOLUME_ID_HASH(fidp->volume);
901 /* The volumeID can be any one of the three types. So we must
902 * search the hash table for all three types until we find it.
903 * We will search in the order of RO, RW, BK.
905 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
906 if ( cellp == volp->cellp && fidp->volume == volp->ro.ID )
911 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
912 if ( cellp == volp->cellp && fidp->volume == volp->rw.ID )
918 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
919 if ( cellp == volp->cellp && fidp->volume == volp->bk.ID )
924 #ifdef SEARCH_ALL_VOLUMES
925 osi_assertx(volp == volp2, "unexpected cm_vol_t");
927 /* hold the volume if we found it */
931 lock_ReleaseRead(&cm_volumeLock);
934 cm_data.mountRootGen = time(NULL);
935 lock_ObtainMutex(&volp->mx);
936 volp->flags |= CM_VOLUMEFLAG_RESET;
938 /* Mark the volume to be updated but don't update it now.
939 * This function is called only from within cm_Analyze
940 * when cm_ConnByMServers has failed with all servers down
941 * The problem is that cm_UpdateVolume is going to call
942 * cm_ConnByMServers which may cause a recursive chain
943 * of calls each returning a retry on failure.
944 * Instead, set the flag so the next time the volume is
945 * accessed by Name or ID the UpdateVolume call will
948 code = cm_UpdateVolume(cellp, userp, reqp, volp);
950 volp->flags &= ~CM_VOLUMEFLAG_RESET;
952 lock_ReleaseMutex(&volp->mx);
957 /* find the appropriate servers from a volume */
958 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
960 cm_serverRef_t **serverspp;
961 cm_serverRef_t *current;;
963 lock_ObtainWrite(&cm_serverLock);
965 if (volume == volp->rw.ID)
966 serverspp = &volp->rw.serversp;
967 else if (volume == volp->ro.ID)
968 serverspp = &volp->ro.serversp;
969 else if (volume == volp->bk.ID)
970 serverspp = &volp->bk.serversp;
972 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
974 for (current = *serverspp; current; current = current->next)
977 lock_ReleaseWrite(&cm_serverLock);
982 void cm_PutVolume(cm_volume_t *volp)
984 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
985 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
988 /* return the read-only volume, if there is one, or the read-write volume if
991 long cm_GetROVolumeID(cm_volume_t *volp)
995 lock_ObtainMutex(&volp->mx);
996 if (volp->ro.ID && volp->ro.serversp)
1000 lock_ReleaseMutex(&volp->mx);
1005 void cm_RefreshVolumes(void)
1011 cm_data.mountRootGen = time(NULL);
1013 /* force a re-loading of volume data from the vldb */
1014 lock_ObtainRead(&cm_volumeLock);
1015 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1016 InterlockedIncrement(&volp->refCount);
1017 lock_ReleaseRead(&cm_volumeLock);
1019 lock_ObtainMutex(&volp->mx);
1020 volp->flags |= CM_VOLUMEFLAG_RESET;
1021 lock_ReleaseMutex(&volp->mx);
1023 lock_ObtainRead(&cm_volumeLock);
1024 refCount = InterlockedDecrement(&volp->refCount);
1025 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1027 lock_ReleaseRead(&cm_volumeLock);
1029 /* force mount points to be re-evaluated so that
1030 * if the volume location has changed we will pick
1033 for ( scp = cm_data.scacheLRUFirstp;
1035 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
1036 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
1037 #ifdef AFS_FREELANCE_CLIENT
1038 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
1041 lock_ObtainWrite(&scp->rw);
1042 scp->mountPointStringp[0] = '\0';
1043 lock_ReleaseWrite(&scp->rw);
1050 /* The return code is 0 if the volume is not online and
1051 * 1 if the volume is online
1054 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1058 AFSFetchVolumeStatus volStat;
1063 struct rx_connection * callp;
1065 char offLineMsg[256];
1068 cm_serverRef_t *serversp;
1071 OfflineMsg = offLineMsg;
1074 lock_ObtainMutex(&volp->mx);
1076 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1078 code = cm_UpdateVolume(volp->cellp, cm_rootUserp, &req, volp);
1080 volp->flags &= ~CM_VOLUMEFLAG_RESET;
1083 if (volp->rw.ID != 0 && (!volID || volID == volp->rw.ID) &&
1084 volp->rw.serversp &&
1085 (volp->rw.state == vl_busy || volp->rw.state == vl_offline || volp->rw.state == vl_unknown)) {
1088 for (serversp = volp->rw.serversp; serversp; serversp = serversp->next) {
1089 if (serversp->status == srv_busy || serversp->status == srv_offline)
1090 serversp->status = srv_not_busy;
1093 lock_ReleaseMutex(&volp->mx);
1095 code = cm_ConnFromVolume(volp, volp->rw.ID, cm_rootUserp, &req, &connp);
1099 callp = cm_GetRxConn(connp);
1100 code = RXAFS_GetVolumeStatus(callp, volp->rw.ID,
1101 &volStat, &Name, &OfflineMsg, &MOTD);
1102 rx_PutConnection(callp);
1104 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1105 code = cm_MapRPCError(code, &req);
1107 lock_ObtainMutex(&volp->mx);
1108 if (code == 0 && volStat.Online) {
1109 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_online);
1110 volp->rw.state = vl_online;
1112 } else if (code == CM_ERROR_NOACCESS) {
1113 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
1114 volp->rw.state = vl_unknown;
1119 if (volp->ro.ID != 0 && (!volID || volID == volp->ro.ID) &&
1120 volp->ro.serversp &&
1121 (volp->ro.state == vl_busy || volp->ro.state == vl_offline || volp->ro.state == vl_unknown)) {
1124 for (serversp = volp->ro.serversp; serversp; serversp = serversp->next) {
1125 if (serversp->status == srv_busy || serversp->status == srv_offline)
1126 serversp->status = srv_not_busy;
1129 lock_ReleaseMutex(&volp->mx);
1131 code = cm_ConnFromVolume(volp, volp->ro.ID, cm_rootUserp, &req, &connp);
1135 callp = cm_GetRxConn(connp);
1136 code = RXAFS_GetVolumeStatus(callp, volp->ro.ID,
1137 &volStat, &Name, &OfflineMsg, &MOTD);
1138 rx_PutConnection(callp);
1140 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1141 code = cm_MapRPCError(code, &req);
1143 lock_ObtainMutex(&volp->mx);
1144 if (code == 0 && volStat.Online) {
1145 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_online);
1146 volp->ro.state = vl_online;
1148 } else if (code == CM_ERROR_NOACCESS) {
1149 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
1150 volp->ro.state = vl_unknown;
1155 if (volp->bk.ID != 0 && (!volID || volID == volp->bk.ID) &&
1156 volp->bk.serversp &&
1157 (volp->bk.state == vl_busy || volp->bk.state == vl_offline || volp->bk.state == vl_unknown)) {
1160 for (serversp = volp->bk.serversp; serversp; serversp = serversp->next) {
1161 if (serversp->status == srv_busy || serversp->status == srv_offline)
1162 serversp->status = srv_not_busy;
1165 lock_ReleaseMutex(&volp->mx);
1167 code = cm_ConnFromVolume(volp, volp->bk.ID, cm_rootUserp, &req, &connp);
1171 callp = cm_GetRxConn(connp);
1172 code = RXAFS_GetVolumeStatus(callp, volp->bk.ID,
1173 &volStat, &Name, &OfflineMsg, &MOTD);
1174 rx_PutConnection(callp);
1176 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1177 code = cm_MapRPCError(code, &req);
1179 lock_ObtainMutex(&volp->mx);
1180 if (code == 0 && volStat.Online) {
1181 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_online);
1182 volp->bk.state = vl_online;
1184 } else if (code == CM_ERROR_NOACCESS) {
1185 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
1186 volp->bk.state = vl_unknown;
1191 lock_ReleaseMutex(&volp->mx);
1196 /* called from the Daemon thread */
1197 void cm_CheckOfflineVolumes(void)
1202 lock_ObtainRead(&cm_volumeLock);
1203 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1204 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1205 InterlockedIncrement(&volp->refCount);
1206 lock_ReleaseRead(&cm_volumeLock);
1207 cm_CheckOfflineVolume(volp, 0);
1208 lock_ObtainRead(&cm_volumeLock);
1209 refCount = InterlockedDecrement(&volp->refCount);
1210 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1213 lock_ReleaseRead(&cm_volumeLock);
1218 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1220 enum volstatus newStatus;
1221 cm_serverRef_t *tsrp;
1223 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1225 if (!volp || !statep) {
1232 lock_ObtainWrite(&cm_serverLock);
1233 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1235 cm_GetServerNoLock(tsp);
1236 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1238 if (tsrp->status == srv_busy) {
1241 } else if (tsrp->status == srv_offline) {
1249 cm_PutServerNoLock(tsp);
1251 lock_ReleaseWrite(&cm_serverLock);
1254 newStatus = vl_alldown;
1255 else if (allBusy || (someBusy && someOffline))
1256 newStatus = vl_busy;
1257 else if (allOffline)
1258 newStatus = vl_offline;
1260 newStatus = vl_online;
1262 if (statep->ID && statep->state != newStatus)
1263 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1265 statep->state = newStatus;
1269 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1272 if (volp->rw.ID == volID) {
1273 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1274 } else if (volp->ro.ID == volID) {
1275 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1276 } else if (volp->bk.ID == volID) {
1277 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1280 * If we are called with volID == 0 then something has gone wrong.
1281 * Most likely a race occurred in the server volume list maintenance.
1282 * Since we don't know which volume's status should be updated,
1283 * just update all of them that are known to exist. Better to be
1284 * correct than fast.
1286 if (volp->rw.ID != 0)
1287 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1288 if (volp->ro.ID != 0)
1289 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1290 if (volp->bk.ID != 0)
1291 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1296 ** Finds all volumes that reside on this server and reorders their
1297 ** RO list according to the changed rank of server.
1299 void cm_ChangeRankVolume(cm_server_t *tsp)
1305 /* find volumes which might have RO copy on server*/
1306 lock_ObtainRead(&cm_volumeLock);
1307 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1309 code = 1 ; /* assume that list is unchanged */
1310 InterlockedIncrement(&volp->refCount);
1311 lock_ReleaseRead(&cm_volumeLock);
1312 lock_ObtainMutex(&volp->mx);
1314 if ((tsp->cellp==volp->cellp) && (volp->ro.serversp))
1315 code =cm_ChangeRankServer(&volp->ro.serversp, tsp);
1317 /* this volume list was changed */
1319 cm_RandomizeServer(&volp->ro.serversp);
1321 lock_ReleaseMutex(&volp->mx);
1322 lock_ObtainRead(&cm_volumeLock);
1323 refCount = InterlockedDecrement(&volp->refCount);
1324 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1326 lock_ReleaseRead(&cm_volumeLock);
1329 /* dump all volumes that have reference count > 0 to a file.
1330 * cookie is used to identify this batch for easy parsing,
1331 * and it a string provided by a caller
1333 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1340 lock_ObtainRead(&cm_scacheLock);
1341 lock_ObtainRead(&cm_volumeLock);
1344 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1345 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1347 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1349 sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
1350 cookie, volp, volp->cellp->name, volp->namep, volp->rw.ID, volp->ro.ID, volp->bk.ID, volp->flags,
1352 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1354 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1355 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1358 lock_ReleaseRead(&cm_volumeLock);
1359 lock_ReleaseRead(&cm_scacheLock);
1366 * String hash function used by SDBM project.
1367 * It was chosen because it is fast and provides
1370 afs_uint32 SDBMHash(const char * str)
1372 afs_uint32 hash = 0;
1378 for(i = 0, len = strlen(str); i < len; i++)
1380 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1383 return (hash & 0x7FFFFFFF);
1386 /* call with volume write-locked and mutex held */
1387 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1391 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1394 i = CM_VOLUME_NAME_HASH(volp->namep);
1396 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1397 cm_data.volumeNameHashTablep[i] = volp;
1398 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1401 /* call with volume write-locked and mutex held */
1402 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1404 cm_volume_t **lvolpp;
1408 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1409 /* hash it out first */
1410 i = CM_VOLUME_NAME_HASH(volp->namep);
1411 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1413 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1414 if (tvolp == volp) {
1415 *lvolpp = volp->nameNextp;
1416 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1417 volp->nameNextp = NULL;
1424 /* call with volume write-locked and mutex held */
1425 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1428 struct cm_vol_state * statep;
1444 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1447 i = CM_VOLUME_ID_HASH(statep->ID);
1451 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1452 cm_data.volumeRWIDHashTablep[i] = volp;
1455 statep->nextp = cm_data.volumeROIDHashTablep[i];
1456 cm_data.volumeROIDHashTablep[i] = volp;
1459 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1460 cm_data.volumeBKIDHashTablep[i] = volp;
1463 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1467 /* call with volume write-locked and mutex held */
1468 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1470 cm_volume_t **lvolpp;
1472 struct cm_vol_state * statep;
1489 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1490 /* hash it out first */
1491 i = CM_VOLUME_ID_HASH(statep->ID);
1495 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1496 tvolp = cm_data.volumeRWIDHashTablep[i];
1499 lvolpp = &cm_data.volumeROIDHashTablep[i];
1500 tvolp = cm_data.volumeROIDHashTablep[i];
1503 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1504 tvolp = cm_data.volumeBKIDHashTablep[i];
1508 if (tvolp == volp) {
1509 *lvolpp = statep->nextp;
1510 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1511 statep->nextp = NULL;
1517 lvolpp = &tvolp->rw.nextp;
1518 tvolp = tvolp->rw.nextp;
1521 lvolpp = &tvolp->ro.nextp;
1522 tvolp = tvolp->ro.nextp;
1525 lvolpp = &tvolp->bk.nextp;
1526 tvolp = tvolp->bk.nextp;
1533 /* must be called with cm_volumeLock write-locked! */
1534 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1536 if (volp == cm_data.volumeLRULastp)
1537 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&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_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &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_MoveVolumeToLRULast(cm_volume_t *volp)
1549 if (volp == cm_data.volumeLRULastp)
1552 if (volp == cm_data.volumeLRUFirstp)
1553 cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
1554 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1555 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1556 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1557 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1558 if (!cm_data.volumeLRULastp)
1559 cm_data.volumeLRULastp = volp;
1562 /* must be called with cm_volumeLock write-locked! */
1563 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1565 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1566 if (volp == cm_data.volumeLRULastp)
1567 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1568 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1569 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1573 static char * volstatus_str(enum volstatus vs)
1589 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1591 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1594 if (volID == volp->rw.ID)
1596 else if (volID == volp->ro.ID)
1598 else if (volID == volp->bk.ID)
1602 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1604 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1605 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1607 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1610 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1612 if (volp->rw.ID == volID) {
1613 return volp->rw.state;
1614 } else if (volp->ro.ID == volID) {
1615 return volp->ro.state;
1616 } else if (volp->bk.ID == volID) {
1617 return volp->bk.state;
1623 /* Renew .readonly volume callbacks that are more than
1624 * 30 minutes old. (A volume callback is issued for 2 hours.)
1627 cm_VolumeRenewROCallbacks(void)
1630 time_t minexp = time(NULL) + 90 * 60;
1632 lock_ObtainRead(&cm_volumeLock);
1633 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1634 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1639 cm_SetFid(&fid, volp->cellp->cellID, volp->ro.ID, 1, 1);
1643 lock_ReleaseRead(&cm_volumeLock);
1644 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1645 lock_ObtainWrite(&scp->rw);
1646 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1647 lock_ReleaseWrite(&scp->rw);
1648 cm_ReleaseSCache(scp);
1650 lock_ObtainRead(&cm_volumeLock);
1653 lock_ReleaseRead(&cm_volumeLock);