2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afs/param.h>
18 #include <sys/socket.h>
26 osi_rwlock_t cm_volumeLock;
29 cm_ValidateVolume(void)
34 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
35 if ( volp->magic != CM_VOLUME_MAGIC ) {
36 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
37 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
40 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
41 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
42 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
45 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
46 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
47 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
50 if ( count != 0 && volp == cm_data.allVolumesp ||
51 count > cm_data.maxVolumes ) {
52 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
53 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
58 if ( count != cm_data.currentVolumes ) {
59 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
60 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
68 cm_ShutdownVolume(void)
72 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
75 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_alldown);
77 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_alldown);
79 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_alldown);
80 volp->cbExpiresRO = 0;
81 lock_FinalizeMutex(&volp->mx);
87 void cm_InitVolume(int newFile, long maxVols)
89 static osi_once_t once;
91 if (osi_Once(&once)) {
92 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
95 cm_data.allVolumesp = NULL;
96 cm_data.currentVolumes = 0;
97 cm_data.maxVolumes = maxVols;
98 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
101 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
102 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
106 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
108 volp->flags |= CM_VOLUMEFLAG_RESET;
109 volp->rw.state = vl_unknown;
110 volp->rw.serversp = NULL;
111 volp->ro.state = vl_unknown;
112 volp->ro.serversp = NULL;
113 volp->bk.state = vl_unknown;
114 volp->bk.serversp = NULL;
116 cm_VolumeStatusNotification(volp, volp->rw.ID, vl_alldown, volp->rw.state);
118 cm_VolumeStatusNotification(volp, volp->ro.ID, vl_alldown, volp->ro.state);
120 cm_VolumeStatusNotification(volp, volp->bk.ID, vl_alldown, volp->bk.state);
121 volp->cbExpiresRO = 0;
129 /* returns true if the id is a decimal integer, in which case we interpret it
130 * as an id. make the cache manager much simpler.
131 * Stolen from src/volser/vlprocs.c */
133 cm_VolNameIsID(char *aname)
136 while (tc = *aname++) {
137 if (tc > '9' || tc < '0')
145 * Update a volume. Caller holds volume's lock (volp->mx).
148 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
149 * Yes, we support multihomed fileservers.
150 * Since before we got the code from IBM.
151 * But to find out about multiple addresses on a multihomed server, you need
152 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
153 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
154 * address per server.
155 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
156 * see src/afs/afs_volume.c, paying particular attention to
157 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
158 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
159 * thanks. The windows client calls the 0 versions.
160 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
162 * By not using the N versions, you only get up to 8 sites instead of 13.
163 * By not using the U versions, you don't get to know about multihomed serve
164 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
165 * Of course, you probably want to support the older versions for backward
166 * compatibility. If you do that, you need to call the newest interface
167 * first, and fall back to successively older versions if you get
171 long cm_UpdateVolume(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
176 cm_serverRef_t *tsrp;
178 struct sockaddr_in tsockAddr;
181 struct vldbentry vldbEntry;
182 struct nvldbentry nvldbEntry;
184 struct uvldbentry uvldbEntry;
189 enum volstatus rwNewstate = vl_online;
190 enum volstatus roNewstate = vl_online;
191 enum volstatus bkNewstate = vl_online;
192 #ifdef AFS_FREELANCE_CLIENT
196 /* clear out old bindings */
197 if (volp->rw.serversp)
198 cm_FreeServerList(&volp->rw.serversp, CM_FREESERVERLIST_DELETE);
199 if (volp->ro.serversp)
200 cm_FreeServerList(&volp->ro.serversp, CM_FREESERVERLIST_DELETE);
201 if (volp->bk.serversp)
202 cm_FreeServerList(&volp->bk.serversp, CM_FREESERVERLIST_DELETE);
204 #ifdef AFS_FREELANCE_CLIENT
205 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->rw.ID == AFS_FAKE_ROOT_VOL_ID )
208 memset(&vldbEntry, 0, sizeof(vldbEntry));
209 vldbEntry.flags |= VLF_RWEXISTS;
210 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
216 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
217 cm_UpdateCell(cellp, 0);
219 /* now we have volume structure locked and held; make RPC to fill it */
220 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name, volp->namep);
222 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
226 code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
228 if ( code == RXGEN_OPCODE )
231 code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
234 if ( code == RXGEN_OPCODE ) {
235 code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
238 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
239 code = cm_MapVLRPCError(code, reqp);
241 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
242 volp->cellp->name, volp->namep, code);
244 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
245 volp->cellp->name, volp->namep);
248 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
249 * does not exist but there might exist a .readonly volume. If the base name
250 * doesn't exist we will not care about the .backup that might be left behind
251 * since there should be no method to access it.
253 if (code == CM_ERROR_NOSUCHVOLUME && volp->rw.ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
254 char name[VL_MAXNAMELEN];
256 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
258 /* now we have volume structure locked and held; make RPC to fill it */
259 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name,
260 osi_LogSaveString(afsd_logp,name));
262 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
266 code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
268 if ( code == RXGEN_OPCODE )
271 code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
274 if ( code == RXGEN_OPCODE ) {
275 code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
278 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
279 code = cm_MapVLRPCError(code, reqp);
281 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
282 volp->cellp->name, osi_LogSaveString(afsd_logp,name), code);
284 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
285 volp->cellp->name, osi_LogSaveString(afsd_logp,name));
294 afs_int32 serverNumber[NMAXNSERVERS];
295 afs_int32 serverFlags[NMAXNSERVERS];
296 afs_int32 rwServers_alldown = 1;
297 afs_int32 roServers_alldown = 1;
298 afs_int32 bkServers_alldown = 1;
299 char name[VL_MAXNAMELEN];
301 #ifdef AFS_FREELANCE_CLIENT
303 rwServers_alldown = 0;
308 flags = vldbEntry.flags;
309 nServers = vldbEntry.nServers;
310 rwID = vldbEntry.volumeId[0];
311 roID = vldbEntry.volumeId[1];
312 bkID = vldbEntry.volumeId[2];
313 for ( i=0; i<nServers; i++ ) {
314 serverFlags[i] = vldbEntry.serverFlags[i];
315 serverNumber[i] = vldbEntry.serverNumber[i];
317 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
318 name[VL_MAXNAMELEN - 1] = '\0';
321 flags = nvldbEntry.flags;
322 nServers = nvldbEntry.nServers;
323 rwID = nvldbEntry.volumeId[0];
324 roID = nvldbEntry.volumeId[1];
325 bkID = nvldbEntry.volumeId[2];
326 for ( i=0; i<nServers; i++ ) {
327 serverFlags[i] = nvldbEntry.serverFlags[i];
328 serverNumber[i] = nvldbEntry.serverNumber[i];
330 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
331 name[VL_MAXNAMELEN - 1] = '\0';
335 flags = uvldbEntry.flags;
336 nServers = uvldbEntry.nServers;
337 rwID = uvldbEntry.volumeId[0];
338 roID = uvldbEntry.volumeId[1];
339 bkID = uvldbEntry.volumeId[2];
340 for ( i=0, j=0; i<nServers && j<NMAXNSERVERS; i++ ) {
341 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
342 serverFlags[j] = uvldbEntry.serverFlags[i];
343 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
346 afs_uint32 * addrp, nentries, code, unique;
348 ListAddrByAttributes attrs;
351 memset((char *)&attrs, 0, sizeof(attrs));
352 attrs.Mask = VLADDR_UUID;
353 attrs.uuid = uvldbEntry.serverNumber[i];
354 memset((char *)&uuid, 0, sizeof(uuid));
355 memset((char *)&addrs, 0, sizeof(addrs));
358 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
362 code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
364 if (code == 0 && nentries == 0)
366 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
367 code = cm_MapVLRPCError(code, reqp);
371 addrp = addrs.bulkaddrs_val;
372 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
373 serverFlags[j] = uvldbEntry.serverFlags[i];
374 serverNumber[j] = addrp[k];
377 free(addrs.bulkaddrs_val); /* This is wrong */
380 nServers = j; /* update the server count */
381 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
382 name[VL_MAXNAMELEN - 1] = '\0';
387 /* decode the response */
388 lock_ObtainWrite(&cm_volumeLock);
389 if (cm_VolNameIsID(volp->namep)) {
394 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
395 name[len - 7] = '\0';
396 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
397 name[len - 9] = '\0';
400 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s", volp->namep, name);
402 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
403 cm_RemoveVolumeFromNameHashTable(volp);
405 strcpy(volp->namep, name);
407 cm_AddVolumeToNameHashTable(volp);
410 if (flags & VLF_RWEXISTS) {
411 if (volp->rw.ID != rwID) {
412 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
413 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
415 cm_AddVolumeToIDHashTable(volp, RWVOL);
418 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
419 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
422 if (flags & VLF_ROEXISTS) {
423 if (volp->ro.ID != roID) {
424 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
425 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
427 cm_AddVolumeToIDHashTable(volp, ROVOL);
430 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
431 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
434 if (flags & VLF_BACKEXISTS) {
435 if (volp->bk.ID != bkID) {
436 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
437 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
439 cm_AddVolumeToIDHashTable(volp, BACKVOL);
442 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
443 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
446 lock_ReleaseWrite(&cm_volumeLock);
447 for (i=0; i<nServers; i++) {
448 /* create a server entry */
449 tflags = serverFlags[i];
450 if (tflags & VLSF_DONTUSE)
452 tsockAddr.sin_family = AF_INET;
453 tempAddr = htonl(serverNumber[i]);
454 tsockAddr.sin_addr.s_addr = tempAddr;
455 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
457 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
460 /* if this server was created by fs setserverprefs */
464 osi_assertx(tsp != NULL, "null cm_server_t");
466 /* and add it to the list(s). */
468 * Each call to cm_NewServerRef() increments the
469 * ref count of tsp. These reference will be dropped,
470 * if and when the volume is reset; see reset code
471 * earlier in this function.
473 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
474 tsrp = cm_NewServerRef(tsp, rwID);
475 cm_InsertServerList(&volp->rw.serversp, tsrp);
477 lock_ObtainWrite(&cm_serverLock);
478 tsrp->refCount--; /* drop allocation reference */
479 lock_ReleaseWrite(&cm_serverLock);
481 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
482 rwServers_alldown = 0;
484 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
485 tsrp = cm_NewServerRef(tsp, roID);
486 cm_InsertServerList(&volp->ro.serversp, tsrp);
487 lock_ObtainWrite(&cm_serverLock);
488 tsrp->refCount--; /* drop allocation reference */
489 lock_ReleaseWrite(&cm_serverLock);
492 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
493 roServers_alldown = 0;
495 /* We don't use VLSF_BACKVOL !?! */
496 /* Because only the backup on the server holding the RW
497 * volume can be valid. This check prevents errors if a
498 * RW is moved but the old backup is not removed.
500 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
501 tsrp = cm_NewServerRef(tsp, bkID);
502 cm_InsertServerList(&volp->bk.serversp, tsrp);
503 lock_ObtainWrite(&cm_serverLock);
504 tsrp->refCount--; /* drop allocation reference */
505 lock_ReleaseWrite(&cm_serverLock);
507 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
508 bkServers_alldown = 0;
510 /* Drop the reference obtained by cm_FindServer() */
517 * If the first n servers have the same ipRank, then we
518 * randomly pick one among them and move it to the beginning.
519 * We don't bother to re-order the whole list because
520 * the rest of the list is used only if the first server is
521 * down. We only do this for the RO list; we assume the other
522 * lists are length 1.
525 cm_RandomizeServer(&volp->ro.serversp);
528 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
529 roNewstate = roServers_alldown ? vl_alldown : vl_online;
530 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
532 rwNewstate = roNewstate = bkNewstate = vl_alldown;
535 if (volp->rw.state != rwNewstate) {
537 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, rwNewstate);
538 volp->rw.state = rwNewstate;
540 if (volp->ro.state != roNewstate) {
542 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, roNewstate);
543 volp->ro.state = roNewstate;
545 if (volp->bk.state != bkNewstate) {
547 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, bkNewstate);
548 volp->bk.state = bkNewstate;
554 void cm_GetVolume(cm_volume_t *volp)
557 lock_ObtainWrite(&cm_volumeLock);
559 lock_ReleaseWrite(&cm_volumeLock);
564 long cm_GetVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
565 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
568 #ifdef SEARCH_ALL_VOLUMES
571 char volNameString[VL_MAXNAMELEN];
575 lock_ObtainRead(&cm_volumeLock);
576 #ifdef SEARCH_ALL_VOLUMES
577 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
578 if (cellp == volp->cellp &&
579 ((unsigned) volumeID == volp->rw.ID ||
580 (unsigned) volumeID == volp->ro.ID ||
581 (unsigned) volumeID == volp->bk.ID))
586 #endif /* SEARCH_ALL_VOLUMES */
588 hash = CM_VOLUME_ID_HASH(volumeID);
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 ( cellp == volp->cellp && volumeID == volp->ro.ID )
599 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
600 if ( cellp == volp->cellp && volumeID == volp->rw.ID )
606 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
607 if ( cellp == volp->cellp && volumeID == volp->bk.ID )
612 #ifdef SEARCH_ALL_VOLUMES
613 osi_assertx(volp == volp2, "unexpected cm_vol_t");
616 lock_ReleaseRead(&cm_volumeLock);
618 /* hold the volume if we found it */
624 lock_ObtainMutex(&volp->mx);
627 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
628 code = cm_UpdateVolume(cellp, userp, reqp, volp);
630 volp->flags &= ~CM_VOLUMEFLAG_RESET;
632 lock_ReleaseMutex(&volp->mx);
636 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
637 lock_ObtainWrite(&cm_volumeLock);
638 cm_AdjustVolumeLRU(volp);
639 lock_ReleaseWrite(&cm_volumeLock);
647 /* otherwise, we didn't find it so consult the VLDB */
648 sprintf(volNameString, "%u", volumeID);
649 code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
655 long cm_GetVolumeByName(struct cm_cell *cellp, char *volumeNamep,
656 struct cm_user *userp, struct cm_req *reqp,
657 afs_uint32 flags, cm_volume_t **outVolpp)
660 #ifdef SEARCH_ALL_VOLUMES
664 char name[VL_MAXNAMELEN];
669 strncpy(name, volumeNamep, VL_MAXNAMELEN);
670 name[VL_MAXNAMELEN-1] = '\0';
673 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
675 name[len - 7] = '\0';
676 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
678 name[len - 9] = '\0';
683 lock_ObtainRead(&cm_volumeLock);
684 #ifdef SEARCH_ALL_VOLUMES
685 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
686 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
691 #endif /* SEARCH_ALL_VOLUMES */
693 hash = CM_VOLUME_NAME_HASH(name);
694 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
695 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
699 #ifdef SEARCH_ALL_VOLUMES
700 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
703 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
704 /* otherwise, get from VLDB */
706 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
708 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
709 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
710 if ( volp->refCount == 0 ) {
711 /* There is one we can re-use */
716 for ( volp = cm_data.volumeLRULastp;
718 volp = (cm_volume_t *) osi_QPrev(&volp->q))
720 if ( volp->refCount == 0 ) {
721 /* There is one we can re-use */
727 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
729 lock_ReleaseRead(&cm_volumeLock);
730 lock_ObtainMutex(&volp->mx);
731 lock_ObtainWrite(&cm_volumeLock);
733 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
734 volp->cellp->name, volp->namep);
736 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
737 cm_RemoveVolumeFromLRU(volp);
738 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
739 cm_RemoveVolumeFromNameHashTable(volp);
740 if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
741 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
742 if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
743 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
744 if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
745 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
748 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
750 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
752 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
754 volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
755 volp->dotdotFid.cell = 0;
756 volp->dotdotFid.volume = 0;
757 volp->dotdotFid.unique = 0;
758 volp->dotdotFid.vnode = 0;
759 volp->dotdotFid.hash = 0;
761 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
762 memset(volp, 0, sizeof(cm_volume_t));
763 volp->magic = CM_VOLUME_MAGIC;
764 volp->allNextp = cm_data.allVolumesp;
765 cm_data.allVolumesp = volp;
766 lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
767 lock_ReleaseRead(&cm_volumeLock);
768 lock_ObtainMutex(&volp->mx);
769 lock_ObtainWrite(&cm_volumeLock);
772 strncpy(volp->namep, name, VL_MAXNAMELEN);
773 volp->namep[VL_MAXNAMELEN-1] = '\0';
774 volp->refCount = 1; /* starts off held */
775 volp->flags = CM_VOLUMEFLAG_RESET;
776 volp->rw.state = volp->ro.state = volp->bk.state = vl_unknown;
777 volp->rw.nextp = volp->ro.nextp = volp->bk.nextp = NULL;
778 volp->rw.flags = volp->ro.flags = volp->bk.flags = 0;
779 volp->cbExpiresRO = 0;
780 cm_AddVolumeToNameHashTable(volp);
781 lock_ReleaseWrite(&cm_volumeLock);
784 lock_ReleaseRead(&cm_volumeLock);
787 lock_ObtainMutex(&volp->mx);
789 return CM_ERROR_NOSUCHVOLUME;
793 /* if we get here we are holding the mutex */
794 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
795 code = cm_UpdateVolume(cellp, userp, reqp, volp);
797 volp->flags &= ~CM_VOLUMEFLAG_RESET;
799 lock_ReleaseMutex(&volp->mx);
801 if (code == 0 && (type == BACKVOL && volp->bk.ID == 0 ||
802 type == ROVOL && volp->ro.ID == 0))
803 code = CM_ERROR_NOSUCHVOLUME;
808 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
809 lock_ObtainWrite(&cm_volumeLock);
810 cm_AdjustVolumeLRU(volp);
811 lock_ReleaseWrite(&cm_volumeLock);
819 void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
823 #ifdef SEARCH_ALL_VOLUMES
830 cellp = cm_FindCellByID(fidp->cell, 0);
833 /* search for the volume */
834 lock_ObtainRead(&cm_volumeLock);
835 #ifdef SEARCH_ALL_VOLUMES
836 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
837 if (cellp == volp->cellp &&
838 (fidp->volume == volp->rw.ID ||
839 fidp->volume == volp->ro.ID ||
840 fidp->volume == volp->bk.ID))
843 #endif /* SEARCH_ALL_VOLUMES */
845 hash = CM_VOLUME_ID_HASH(fidp->volume);
846 /* The volumeID can be any one of the three types. So we must
847 * search the hash table for all three types until we find it.
848 * We will search in the order of RO, RW, BK.
850 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
851 if ( cellp == volp->cellp && fidp->volume == volp->ro.ID )
856 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
857 if ( cellp == volp->cellp && fidp->volume == volp->rw.ID )
863 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
864 if ( cellp == volp->cellp && fidp->volume == volp->bk.ID )
869 #ifdef SEARCH_ALL_VOLUMES
870 osi_assertx(volp == volp2, "unexpected cm_vol_t");
873 lock_ReleaseRead(&cm_volumeLock);
875 /* hold the volume if we found it */
880 cm_data.mountRootGen = time(NULL);
881 lock_ObtainMutex(&volp->mx);
882 volp->flags |= CM_VOLUMEFLAG_RESET;
884 /* Mark the volume to be updated but don't update it now.
885 * This function is called only from within cm_Analyze
886 * when cm_ConnByMServers has failed with all servers down
887 * The problem is that cm_UpdateVolume is going to call
888 * cm_ConnByMServers which may cause a recursive chain
889 * of calls each returning a retry on failure.
890 * Instead, set the flag so the next time the volume is
891 * accessed by Name or ID the UpdateVolume call will
894 code = cm_UpdateVolume(cellp, userp, reqp, volp);
896 volp->flags &= ~CM_VOLUMEFLAG_RESET;
898 lock_ReleaseMutex(&volp->mx);
903 /* find the appropriate servers from a volume */
904 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume)
906 cm_serverRef_t **serverspp;
907 cm_serverRef_t *current;;
909 lock_ObtainWrite(&cm_serverLock);
911 if (volume == volp->rw.ID)
912 serverspp = &volp->rw.serversp;
913 else if (volume == volp->ro.ID)
914 serverspp = &volp->ro.serversp;
915 else if (volume == volp->bk.ID)
916 serverspp = &volp->bk.serversp;
918 osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
920 for (current = *serverspp; current; current = current->next)
923 lock_ReleaseWrite(&cm_serverLock);
928 void cm_PutVolume(cm_volume_t *volp)
930 lock_ObtainWrite(&cm_volumeLock);
931 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
932 lock_ReleaseWrite(&cm_volumeLock);
935 /* return the read-only volume, if there is one, or the read-write volume if
938 long cm_GetROVolumeID(cm_volume_t *volp)
942 lock_ObtainMutex(&volp->mx);
943 if (volp->ro.ID && volp->ro.serversp)
947 lock_ReleaseMutex(&volp->mx);
952 void cm_RefreshVolumes(void)
957 cm_data.mountRootGen = time(NULL);
959 /* force a re-loading of volume data from the vldb */
960 lock_ObtainWrite(&cm_volumeLock);
961 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
963 lock_ReleaseWrite(&cm_volumeLock);
965 lock_ObtainMutex(&volp->mx);
966 volp->flags |= CM_VOLUMEFLAG_RESET;
967 lock_ReleaseMutex(&volp->mx);
969 lock_ObtainWrite(&cm_volumeLock);
970 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
972 lock_ReleaseWrite(&cm_volumeLock);
974 /* force mount points to be re-evaluated so that
975 * if the volume location has changed we will pick
978 for ( scp = cm_data.scacheLRUFirstp;
980 scp = (cm_scache_t *) osi_QNext(&scp->q)) {
981 if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
982 #ifdef AFS_FREELANCE_CLIENT
983 && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
986 lock_ObtainWrite(&scp->rw);
987 scp->mountPointStringp[0] = '\0';
988 lock_ReleaseWrite(&scp->rw);
995 /* The return code is 0 if the volume is not online and
996 * 1 if the volume is online
999 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1003 AFSFetchVolumeStatus volStat;
1008 struct rx_connection * callp;
1010 char offLineMsg[256];
1013 cm_serverRef_t *serversp;
1016 OfflineMsg = offLineMsg;
1019 lock_ObtainMutex(&volp->mx);
1021 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1023 code = cm_UpdateVolume(volp->cellp, cm_rootUserp, &req, volp);
1025 volp->flags &= ~CM_VOLUMEFLAG_RESET;
1028 if (volp->rw.ID != 0 && (!volID || volID == volp->rw.ID) &&
1029 volp->rw.serversp &&
1030 (volp->rw.state == vl_busy || volp->rw.state == vl_offline || volp->rw.state == vl_unknown)) {
1033 for (serversp = volp->rw.serversp; serversp; serversp = serversp->next) {
1034 if (serversp->status == srv_busy || serversp->status == srv_offline)
1035 serversp->status = srv_not_busy;
1038 lock_ReleaseMutex(&volp->mx);
1040 code = cm_ConnFromVolume(volp, volp->rw.ID, cm_rootUserp, &req, &connp);
1044 callp = cm_GetRxConn(connp);
1045 code = RXAFS_GetVolumeStatus(callp, volp->rw.ID,
1046 &volStat, &Name, &OfflineMsg, &MOTD);
1047 rx_PutConnection(callp);
1049 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1050 code = cm_MapRPCError(code, &req);
1052 lock_ObtainMutex(&volp->mx);
1053 if (code == 0 && volStat.Online) {
1054 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_online);
1055 volp->rw.state = vl_online;
1057 } else if (code == CM_ERROR_NOACCESS) {
1058 cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
1059 volp->rw.state = vl_unknown;
1064 if (volp->ro.ID != 0 && (!volID || volID == volp->ro.ID) &&
1065 volp->ro.serversp &&
1066 (volp->ro.state == vl_busy || volp->ro.state == vl_offline || volp->ro.state == vl_unknown)) {
1069 for (serversp = volp->ro.serversp; serversp; serversp = serversp->next) {
1070 if (serversp->status == srv_busy || serversp->status == srv_offline)
1071 serversp->status = srv_not_busy;
1074 lock_ReleaseMutex(&volp->mx);
1076 code = cm_ConnFromVolume(volp, volp->ro.ID, cm_rootUserp, &req, &connp);
1080 callp = cm_GetRxConn(connp);
1081 code = RXAFS_GetVolumeStatus(callp, volp->ro.ID,
1082 &volStat, &Name, &OfflineMsg, &MOTD);
1083 rx_PutConnection(callp);
1085 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1086 code = cm_MapRPCError(code, &req);
1088 lock_ObtainMutex(&volp->mx);
1089 if (code == 0 && volStat.Online) {
1090 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_online);
1091 volp->ro.state = vl_online;
1093 } else if (code == CM_ERROR_NOACCESS) {
1094 cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
1095 volp->ro.state = vl_unknown;
1100 if (volp->bk.ID != 0 && (!volID || volID == volp->bk.ID) &&
1101 volp->bk.serversp &&
1102 (volp->bk.state == vl_busy || volp->bk.state == vl_offline || volp->bk.state == vl_unknown)) {
1105 for (serversp = volp->bk.serversp; serversp; serversp = serversp->next) {
1106 if (serversp->status == srv_busy || serversp->status == srv_offline)
1107 serversp->status = srv_not_busy;
1110 lock_ReleaseMutex(&volp->mx);
1112 code = cm_ConnFromVolume(volp, volp->bk.ID, cm_rootUserp, &req, &connp);
1116 callp = cm_GetRxConn(connp);
1117 code = RXAFS_GetVolumeStatus(callp, volp->bk.ID,
1118 &volStat, &Name, &OfflineMsg, &MOTD);
1119 rx_PutConnection(callp);
1121 } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
1122 code = cm_MapRPCError(code, &req);
1124 lock_ObtainMutex(&volp->mx);
1125 if (code == 0 && volStat.Online) {
1126 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_online);
1127 volp->bk.state = vl_online;
1129 } else if (code == CM_ERROR_NOACCESS) {
1130 cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
1131 volp->bk.state = vl_unknown;
1136 lock_ReleaseMutex(&volp->mx);
1141 /* called from the Daemon thread */
1142 void cm_CheckOfflineVolumes(void)
1146 lock_ObtainWrite(&cm_volumeLock);
1147 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1149 lock_ReleaseWrite(&cm_volumeLock);
1151 cm_CheckOfflineVolume(volp, 0);
1153 lock_ObtainWrite(&cm_volumeLock);
1154 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
1156 lock_ReleaseWrite(&cm_volumeLock);
1161 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1163 enum volstatus newStatus;
1164 cm_serverRef_t *tsrp;
1166 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1168 if (!volp || !statep) {
1175 lock_ObtainWrite(&cm_serverLock);
1176 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1178 cm_GetServerNoLock(tsp);
1179 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1181 if (tsrp->status == srv_busy) {
1184 } else if (tsrp->status == srv_offline) {
1192 cm_PutServerNoLock(tsp);
1194 lock_ReleaseWrite(&cm_serverLock);
1197 newStatus = vl_alldown;
1198 else if (allBusy || (someBusy && someOffline))
1199 newStatus = vl_busy;
1200 else if (allOffline)
1201 newStatus = vl_offline;
1203 newStatus = vl_online;
1205 if (statep->ID && statep->state != newStatus)
1206 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1208 statep->state = newStatus;
1212 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1215 if (volp->rw.ID == volID) {
1216 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1217 } else if (volp->ro.ID == volID) {
1218 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1219 } else if (volp->bk.ID == volID) {
1220 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1223 * If we are called with volID == 0 then something has gone wrong.
1224 * Most likely a race occurred in the server volume list maintenance.
1225 * Since we don't know which volume's status should be updated,
1226 * just update all of them that are known to exist. Better to be
1227 * correct than fast.
1229 if (volp->rw.ID != 0)
1230 cm_UpdateVolumeStatusInt(volp, &volp->rw);
1231 if (volp->ro.ID != 0)
1232 cm_UpdateVolumeStatusInt(volp, &volp->ro);
1233 if (volp->bk.ID != 0)
1234 cm_UpdateVolumeStatusInt(volp, &volp->bk);
1239 ** Finds all volumes that reside on this server and reorders their
1240 ** RO list according to the changed rank of server.
1242 void cm_ChangeRankVolume(cm_server_t *tsp)
1247 /* find volumes which might have RO copy on server*/
1248 lock_ObtainWrite(&cm_volumeLock);
1249 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1251 code = 1 ; /* assume that list is unchanged */
1253 lock_ReleaseWrite(&cm_volumeLock);
1254 lock_ObtainMutex(&volp->mx);
1256 if ((tsp->cellp==volp->cellp) && (volp->ro.serversp))
1257 code =cm_ChangeRankServer(&volp->ro.serversp, tsp);
1259 /* this volume list was changed */
1261 cm_RandomizeServer(&volp->ro.serversp);
1263 lock_ReleaseMutex(&volp->mx);
1264 lock_ObtainWrite(&cm_volumeLock);
1265 osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
1267 lock_ReleaseWrite(&cm_volumeLock);
1270 /* dump all volumes that have reference count > 0 to a file.
1271 * cookie is used to identify this batch for easy parsing,
1272 * and it a string provided by a caller
1274 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1281 lock_ObtainRead(&cm_scacheLock);
1282 lock_ObtainRead(&cm_volumeLock);
1285 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1286 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1288 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1293 for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
1295 if (scp->volp == volp)
1299 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",
1300 cookie, volp, volp->cellp->name, volp->namep, volp->rw.ID, volp->ro.ID, volp->bk.ID, volp->flags,
1301 volp->dotdotFid.cell, volp->dotdotFid.volume, volp->dotdotFid.vnode, volp->dotdotFid.unique,
1302 volp->refCount, scprefs);
1303 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1305 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1306 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1309 lock_ReleaseRead(&cm_volumeLock);
1310 lock_ReleaseRead(&cm_scacheLock);
1317 * String hash function used by SDBM project.
1318 * It was chosen because it is fast and provides
1321 afs_uint32 SDBMHash(const char * str)
1323 afs_uint32 hash = 0;
1329 for(i = 0, len = strlen(str); i < len; i++)
1331 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1334 return (hash & 0x7FFFFFFF);
1337 /* call with volume write-locked and mutex held */
1338 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1342 if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
1345 i = CM_VOLUME_NAME_HASH(volp->namep);
1347 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1348 cm_data.volumeNameHashTablep[i] = volp;
1349 volp->flags |= CM_VOLUMEFLAG_IN_HASH;
1352 /* call with volume write-locked and mutex held */
1353 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1355 cm_volume_t **lvolpp;
1359 if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
1360 /* hash it out first */
1361 i = CM_VOLUME_NAME_HASH(volp->namep);
1362 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1364 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1365 if (tvolp == volp) {
1366 *lvolpp = volp->nameNextp;
1367 volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1368 volp->nameNextp = NULL;
1375 /* call with volume write-locked and mutex held */
1376 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1379 struct cm_vol_state * statep;
1395 if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
1398 i = CM_VOLUME_ID_HASH(statep->ID);
1402 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1403 cm_data.volumeRWIDHashTablep[i] = volp;
1406 statep->nextp = cm_data.volumeROIDHashTablep[i];
1407 cm_data.volumeROIDHashTablep[i] = volp;
1410 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1411 cm_data.volumeBKIDHashTablep[i] = volp;
1414 statep->flags |= CM_VOLUMEFLAG_IN_HASH;
1418 /* call with volume write-locked and mutex held */
1419 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1421 cm_volume_t **lvolpp;
1423 struct cm_vol_state * statep;
1440 if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
1441 /* hash it out first */
1442 i = CM_VOLUME_ID_HASH(statep->ID);
1446 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1447 tvolp = cm_data.volumeRWIDHashTablep[i];
1450 lvolpp = &cm_data.volumeROIDHashTablep[i];
1451 tvolp = cm_data.volumeROIDHashTablep[i];
1454 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1455 tvolp = cm_data.volumeBKIDHashTablep[i];
1459 if (tvolp == volp) {
1460 *lvolpp = statep->nextp;
1461 statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
1462 statep->nextp = NULL;
1468 lvolpp = &tvolp->rw.nextp;
1469 tvolp = tvolp->rw.nextp;
1472 lvolpp = &tvolp->ro.nextp;
1473 tvolp = tvolp->ro.nextp;
1476 lvolpp = &tvolp->bk.nextp;
1477 tvolp = tvolp->bk.nextp;
1484 /* must be called with cm_volumeLock write-locked! */
1485 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1487 if (volp == cm_data.volumeLRULastp)
1488 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1489 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
1490 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1491 osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
1492 volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
1493 if (!cm_data.volumeLRULastp)
1494 cm_data.volumeLRULastp = volp;
1497 /* must be called with cm_volumeLock write-locked! */
1498 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1500 if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
1501 if (volp == cm_data.volumeLRULastp)
1502 cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
1503 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1504 volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
1508 static char * volstatus_str(enum volstatus vs)
1524 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1526 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1529 if (volID == volp->rw.ID)
1531 else if (volID == volp->ro.ID)
1533 else if (volID == volp->bk.ID)
1537 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1539 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1540 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1542 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1545 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1547 if (volp->rw.ID == volID) {
1548 return volp->rw.state;
1549 } else if (volp->ro.ID == volID) {
1550 return volp->ro.state;
1551 } else if (volp->bk.ID == volID) {
1552 return volp->bk.state;
1558 /* Renew .readonly volume callbacks that are more than
1559 * 30 minutes old. (A volume callback is issued for 2 hours.)
1562 cm_VolumeRenewROCallbacks(void)
1565 time_t minexp = time(NULL) + 90 * 60;
1567 lock_ObtainRead(&cm_volumeLock);
1568 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1569 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1574 cm_SetFid(&fid, volp->cellp->cellID, volp->ro.ID, 1, 1);
1578 lock_ReleaseRead(&cm_volumeLock);
1579 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1580 lock_ObtainWrite(&scp->rw);
1581 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1582 lock_ReleaseWrite(&scp->rw);
1583 cm_ReleaseSCache(scp);
1585 lock_ObtainRead(&cm_volumeLock);
1588 lock_ReleaseRead(&cm_volumeLock);