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 <afsconfig.h>
11 #include <afs/param.h>
26 osi_rwlock_t cm_volumeLock;
29 cm_ValidateVolume(void)
34 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
35 if ( volp->magic != CM_VOLUME_MAGIC ) {
36 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
37 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
40 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
41 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
42 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
45 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
46 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
47 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
50 if ( count != 0 && volp == cm_data.allVolumesp ||
51 count > cm_data.maxVolumes ) {
52 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
53 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
58 if ( count != cm_data.currentVolumes ) {
59 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
60 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
68 cm_ShutdownVolume(void)
72 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
74 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
75 if (volp->vol[volType].ID)
76 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
78 volp->cbExpiresRO = 0;
80 volp->cbServerpRO = NULL;
81 lock_FinalizeRWLock(&volp->rw);
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", LOCK_HIERARCHY_VOLUME_GLOBAL);
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) {
109 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
110 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
111 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
112 volp->lastUpdateTime = 0;
113 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
114 volp->vol[volType].state = vl_unknown;
115 volp->vol[volType].serversp = NULL;
116 if (volp->vol[volType].ID)
117 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
119 volp->cbExpiresRO = 0;
120 volp->cbIssuedRO = 0;
121 volp->cbServerpRO = NULL;
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 a write lock on the volume (volp->rw).
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 cm_GetEntryByName( struct cm_cell *cellp, const char *name,
172 struct vldbentry *vldbEntryp,
173 struct nvldbentry *nvldbEntryp,
174 struct uvldbentry *uvldbEntryp,
182 struct rx_connection * rxconnp;
184 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
185 osi_LogSaveString(afsd_logp,cellp->name),
186 osi_LogSaveString(afsd_logp,name));
189 code = cm_ConnByMServers(cellp->vlServersp, FALSE, userp, reqp, &connp);
193 rxconnp = cm_GetRxConn(connp);
194 code = VL_GetEntryByNameU(rxconnp, name, uvldbEntryp);
196 if ( code == RXGEN_OPCODE )
198 code = VL_GetEntryByNameN(rxconnp, name, nvldbEntryp);
201 if ( code == RXGEN_OPCODE ) {
202 code = VL_GetEntryByNameO(rxconnp, name, vldbEntryp);
205 rx_PutConnection(rxconnp);
206 } while (cm_Analyze(connp, userp, reqp, NULL, 0, NULL, cellp->vlServersp, NULL, code));
207 code = cm_MapVLRPCError(code, reqp);
209 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
210 osi_LogSaveString(afsd_logp,cellp->name),
211 osi_LogSaveString(afsd_logp,name), code);
213 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
214 osi_LogSaveString(afsd_logp,cellp->name),
215 osi_LogSaveString(afsd_logp,name));
220 cm_GetEntryByID( struct cm_cell *cellp, afs_uint32 id,
221 struct vldbentry *vldbEntryp,
222 struct nvldbentry *nvldbEntryp,
223 struct uvldbentry *uvldbEntryp,
231 StringCbPrintf(name, sizeof(name), "%u", id);
233 return cm_GetEntryByName(cellp, name, vldbEntryp, nvldbEntryp, uvldbEntryp, methodp, userp, reqp);
236 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
239 struct rx_connection *rxconnp;
243 cm_serverRef_t *tsrp;
245 struct sockaddr_in tsockAddr;
248 struct vldbentry vldbEntry;
249 struct nvldbentry nvldbEntry;
250 struct uvldbentry uvldbEntry;
254 enum volstatus rwNewstate = vl_online;
255 enum volstatus roNewstate = vl_online;
256 enum volstatus bkNewstate = vl_online;
257 #ifdef AFS_FREELANCE_CLIENT
264 lock_AssertWrite(&volp->rw);
267 * If the last volume update was in the last five
268 * minutes and it did not exist, then avoid the RPC
269 * and return No Such Volume immediately.
272 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
273 (now < volp->lastUpdateTime + 600))
275 return CM_ERROR_NOSUCHVOLUME;
278 #ifdef AFS_FREELANCE_CLIENT
279 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
282 memset(&vldbEntry, 0, sizeof(vldbEntry));
283 vldbEntry.flags |= VLF_RWEXISTS;
284 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
290 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
291 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
292 volp->cellp->name, volp->namep, volp->flags);
293 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
294 lock_ObtainWrite(&volp->rw);
295 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
296 volp->cellp->name, volp->namep, volp->flags);
297 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
298 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
299 volp->cellp->name, volp->namep, volp->flags);
300 osi_Wakeup((LONG_PTR) &volp->flags);
306 /* Do not query again if the last update attempt failed in the last 60 seconds */
307 if ((volp->flags & CM_VOLUMEFLAG_RESET) && (volp->lastUpdateTime > now - 60))
309 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation unsuccessful update in last 60 seconds -- name %s:%s flags 0x%x",
310 volp->cellp->name, volp->namep, volp->flags);
311 return(CM_ERROR_ALLDOWN);
314 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
315 lock_ReleaseWrite(&volp->rw);
317 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
318 cm_UpdateCell(cellp, 0);
320 /* now we have volume structure locked and held; make RPC to fill it */
321 code = cm_GetEntryByName(cellp, volp->namep, &vldbEntry, &nvldbEntry,
323 &method, userp, reqp);
326 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
327 * does not exist and is not a numeric string but there might exist a .readonly volume.
328 * If the base name doesn't exist we will not care about the .backup that might be left
329 * behind since there should be no method to access it.
331 if (code == CM_ERROR_NOSUCHVOLUME &&
332 _atoi64(volp->namep) == 0 &&
333 volp->vol[RWVOL].ID == 0 &&
334 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
335 char name[VL_MAXNAMELEN];
337 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
339 /* now we have volume structure locked and held; make RPC to fill it */
340 code = cm_GetEntryByName(cellp, name, &vldbEntry, &nvldbEntry,
342 &method, userp, reqp);
346 * What if there was a volume rename? The volume name no longer exists but the
347 * volume id might. Try to refresh the volume location information based one
348 * of the readwrite or readonly volume id.
350 if (code == CM_ERROR_NOSUCHVOLUME) {
351 if (volp->vol[RWVOL].ID != 0) {
352 code = cm_GetEntryByID(cellp, volp->vol[RWVOL].ID, &vldbEntry, &nvldbEntry,
354 &method, userp, reqp);
355 } else if (volp->vol[ROVOL].ID != 0) {
356 code = cm_GetEntryByID(cellp, volp->vol[ROVOL].ID, &vldbEntry, &nvldbEntry,
358 &method, userp, reqp);
362 lock_ObtainWrite(&volp->rw);
369 afs_int32 serverNumber[NMAXNSERVERS];
370 afs_int32 serverFlags[NMAXNSERVERS];
371 afsUUID serverUUID[NMAXNSERVERS];
372 afs_int32 rwServers_alldown = 1;
373 afs_int32 roServers_alldown = 1;
374 afs_int32 bkServers_alldown = 1;
375 char name[VL_MAXNAMELEN];
377 #ifdef AFS_FREELANCE_CLIENT
379 rwServers_alldown = 0;
382 /* clear out old bindings */
383 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
384 if (volp->vol[volType].serversp)
385 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
388 memset(serverUUID, 0, sizeof(serverUUID));
392 flags = vldbEntry.flags;
393 nServers = vldbEntry.nServers;
394 replicated = (nServers > 0);
395 rwID = vldbEntry.volumeId[0];
396 roID = vldbEntry.volumeId[1];
397 bkID = vldbEntry.volumeId[2];
398 for ( i=0; i<nServers; i++ ) {
399 serverFlags[i] = vldbEntry.serverFlags[i];
400 serverNumber[i] = vldbEntry.serverNumber[i];
402 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
403 name[VL_MAXNAMELEN - 1] = '\0';
406 flags = nvldbEntry.flags;
407 nServers = nvldbEntry.nServers;
408 replicated = (nServers > 0);
409 rwID = nvldbEntry.volumeId[0];
410 roID = nvldbEntry.volumeId[1];
411 bkID = nvldbEntry.volumeId[2];
412 for ( i=0; i<nServers; i++ ) {
413 serverFlags[i] = nvldbEntry.serverFlags[i];
414 serverNumber[i] = nvldbEntry.serverNumber[i];
416 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
417 name[VL_MAXNAMELEN - 1] = '\0';
420 flags = uvldbEntry.flags;
421 nServers = uvldbEntry.nServers;
422 replicated = (nServers > 0);
423 rwID = uvldbEntry.volumeId[0];
424 roID = uvldbEntry.volumeId[1];
425 bkID = uvldbEntry.volumeId[2];
426 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
427 if ( !(uvldbEntry.serverFlags[i] & VLSF_UUID) ) {
428 serverFlags[j] = uvldbEntry.serverFlags[i];
429 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
432 afs_uint32 * addrp, nentries, code, unique;
434 ListAddrByAttributes attrs;
437 memset(&attrs, 0, sizeof(attrs));
438 attrs.Mask = VLADDR_UUID;
439 attrs.uuid = uvldbEntry.serverNumber[i];
440 memset(&uuid, 0, sizeof(uuid));
441 memset(&addrs, 0, sizeof(addrs));
444 code = cm_ConnByMServers(cellp->vlServersp, FALSE, userp, reqp, &connp);
448 rxconnp = cm_GetRxConn(connp);
449 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
450 rx_PutConnection(rxconnp);
451 } while (cm_Analyze(connp, userp, reqp, NULL, 0, NULL, cellp->vlServersp, NULL, code));
454 code = cm_MapVLRPCError(code, reqp);
455 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
459 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
461 addrp = addrs.bulkaddrs_val;
462 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
463 serverFlags[j] = uvldbEntry.serverFlags[i];
464 serverNumber[j] = addrp[k];
465 serverUUID[j] = uuid;
468 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
471 code = CM_ERROR_INVAL;
474 nServers = j; /* update the server count */
475 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
476 name[VL_MAXNAMELEN - 1] = '\0';
480 /* decode the response */
481 lock_ObtainWrite(&cm_volumeLock);
482 if (!cm_VolNameIsID(volp->namep)) {
487 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
488 name[len - 7] = '\0';
489 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
490 name[len - 9] = '\0';
493 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
494 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
496 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
497 cm_RemoveVolumeFromNameHashTable(volp);
499 strcpy(volp->namep, name);
501 cm_AddVolumeToNameHashTable(volp);
504 if (flags & VLF_DFSFILESET) {
505 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
506 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
507 osi_LogSaveString(afsd_logp, volp->namep));
510 if (flags & VLF_RWEXISTS) {
511 if (volp->vol[RWVOL].ID != rwID) {
512 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
513 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
514 volp->vol[RWVOL].ID = rwID;
515 cm_AddVolumeToIDHashTable(volp, RWVOL);
518 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
519 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
520 volp->vol[RWVOL].ID = 0;
522 if (flags & VLF_ROEXISTS) {
523 if (volp->vol[ROVOL].ID != roID) {
524 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
525 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
526 volp->vol[ROVOL].ID = roID;
527 cm_AddVolumeToIDHashTable(volp, ROVOL);
530 _InterlockedOr(&volp->vol[ROVOL].flags, CM_VOL_STATE_FLAG_REPLICATED);
532 _InterlockedAnd(&volp->vol[ROVOL].flags, ~CM_VOL_STATE_FLAG_REPLICATED);
534 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
535 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
536 volp->vol[ROVOL].ID = 0;
538 if (flags & VLF_BACKEXISTS) {
539 if (volp->vol[BACKVOL].ID != bkID) {
540 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
541 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
542 volp->vol[BACKVOL].ID = bkID;
543 cm_AddVolumeToIDHashTable(volp, BACKVOL);
546 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
547 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
548 volp->vol[BACKVOL].ID = 0;
550 lock_ReleaseWrite(&cm_volumeLock);
551 for (i=0; i<nServers; i++) {
552 /* create a server entry */
553 tflags = serverFlags[i];
554 if (tflags & VLSF_DONTUSE)
556 tsockAddr.sin_port = htons(7000);
557 tsockAddr.sin_family = AF_INET;
558 tempAddr = htonl(serverNumber[i]);
559 tsockAddr.sin_addr.s_addr = tempAddr;
560 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
561 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
563 * Check to see if the uuid of the server we know at this address
564 * matches the uuid of the server we are being told about by the
565 * vlserver. If not, ...?
567 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
568 char uuid1[128], uuid2[128];
571 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
572 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
573 afs_inet_ntoa_r(serverNumber[i], hoststr);
575 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
576 osi_LogSaveString(afsd_logp, uuid1),
577 osi_LogSaveString(afsd_logp, uuid2),
578 osi_LogSaveString(afsd_logp, hoststr));
583 * cm_NewServer will probe the file server which in turn will
584 * update the state on the volume group object. Do not probe
585 * in this thread. It will block the thread and can result in
586 * a recursive call to cm_UpdateVolumeLocation().
588 lock_ReleaseWrite(&volp->rw);
589 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
590 lock_ObtainWrite(&volp->rw);
592 osi_assertx(tsp != NULL, "null cm_server_t");
595 * if this server was created by fs setserverprefs
596 * then it won't have either a cell assignment or
601 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
602 !afs_uuid_is_nil(&serverUUID[i])) {
603 tsp->uuid = serverUUID[i];
604 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
607 /* and add it to the list(s). */
609 * Each call to cm_NewServerRef() increments the
610 * ref count of tsp. These reference will be dropped,
611 * if and when the volume is reset; see reset code
612 * earlier in this function.
614 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
615 tsrp = cm_NewServerRef(tsp, rwID);
616 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
617 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
618 rwServers_alldown = 0;
620 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
621 tsrp = cm_NewServerRef(tsp, roID);
622 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
625 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
626 roServers_alldown = 0;
628 /* We don't use VLSF_BACKVOL !?! */
629 /* Because only the backup on the server holding the RW
630 * volume can be valid. This check prevents errors if a
631 * RW is moved but the old backup is not removed.
633 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
634 tsrp = cm_NewServerRef(tsp, bkID);
635 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
637 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
638 bkServers_alldown = 0;
640 /* Drop the reference obtained by cm_FindServer() */
647 * If the first n servers have the same ipRank, then we
648 * randomly pick one among them and move it to the beginning.
649 * We don't bother to re-order the whole list because
650 * the rest of the list is used only if the first server is
651 * down. We only do this for the RO list; we assume the other
652 * lists are length 1.
655 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
658 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
659 roNewstate = roServers_alldown ? vl_alldown : vl_online;
660 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
662 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
663 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
664 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
666 rwNewstate = roNewstate = bkNewstate = vl_alldown;
669 if (volp->vol[RWVOL].state != rwNewstate) {
670 if (volp->vol[RWVOL].ID)
671 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
672 volp->vol[RWVOL].state = rwNewstate;
674 if (volp->vol[ROVOL].state != roNewstate) {
675 if (volp->vol[ROVOL].ID)
676 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
677 volp->vol[ROVOL].state = roNewstate;
679 if (volp->vol[BACKVOL].state != bkNewstate) {
680 if (volp->vol[BACKVOL].ID)
681 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
682 volp->vol[BACKVOL].state = bkNewstate;
685 volp->lastUpdateTime = time(NULL);
688 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
690 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
691 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
692 osi_LogSaveString(afsd_logp,volp->cellp->name),
693 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
694 osi_Wakeup((LONG_PTR) &volp->flags);
699 /* Requires read or write lock on cm_volumeLock */
700 void cm_GetVolume(cm_volume_t *volp)
702 InterlockedIncrement(&volp->refCount);
705 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
710 lock_ObtainRead(&cm_volumeLock);
711 hash = CM_VOLUME_ID_HASH(fidp->volume);
712 /* The volumeID can be any one of the three types. So we must
713 * search the hash table for all three types until we find it.
714 * We will search in the order of RO, RW, BK.
716 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
717 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
722 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
723 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
729 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
730 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
735 /* hold the volume if we found it */
739 lock_ReleaseRead(&cm_volumeLock);
743 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
744 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
747 #ifdef SEARCH_ALL_VOLUMES
750 char volNameString[VL_MAXNAMELEN];
754 lock_ObtainRead(&cm_volumeLock);
755 #ifdef SEARCH_ALL_VOLUMES
756 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
757 if (cellp == volp->cellp &&
758 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
759 (unsigned) volumeID == volp->vol[ROVOL].ID ||
760 (unsigned) volumeID == volp->vol[BACKVOL].ID))
765 #endif /* SEARCH_ALL_VOLUMES */
767 hash = CM_VOLUME_ID_HASH(volumeID);
768 /* The volumeID can be any one of the three types. So we must
769 * search the hash table for all three types until we find it.
770 * We will search in the order of RO, RW, BK.
772 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
773 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
778 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
779 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
785 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
786 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
791 #ifdef SEARCH_ALL_VOLUMES
792 osi_assertx(volp == volp2, "unexpected cm_vol_t");
795 /* hold the volume if we found it */
799 lock_ReleaseRead(&cm_volumeLock);
803 lock_ObtainWrite(&volp->rw);
806 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
807 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
809 lock_ReleaseWrite(&volp->rw);
813 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
814 lock_ObtainWrite(&cm_volumeLock);
815 cm_AdjustVolumeLRU(volp);
816 lock_ReleaseWrite(&cm_volumeLock);
819 lock_ObtainRead(&cm_volumeLock);
821 lock_ReleaseRead(&cm_volumeLock);
826 /* otherwise, we didn't find it so consult the VLDB */
827 sprintf(volNameString, "%u", volumeID);
828 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
829 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
831 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
832 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
833 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
836 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
837 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
844 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
845 struct cm_user *userp, struct cm_req *reqp,
846 afs_uint32 flags, cm_volume_t **outVolpp)
849 #ifdef SEARCH_ALL_VOLUMES
853 char name[VL_MAXNAMELEN];
858 strncpy(name, volumeNamep, VL_MAXNAMELEN);
859 name[VL_MAXNAMELEN-1] = '\0';
862 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
864 name[len - 7] = '\0';
865 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
867 name[len - 9] = '\0';
872 lock_ObtainRead(&cm_volumeLock);
873 #ifdef SEARCH_ALL_VOLUMES
874 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
875 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
880 #endif /* SEARCH_ALL_VOLUMES */
882 hash = CM_VOLUME_NAME_HASH(name);
883 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
884 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
888 #ifdef SEARCH_ALL_VOLUMES
889 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
892 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
894 /* otherwise, get from VLDB */
897 * Change to a write lock so that we have exclusive use of
898 * the first cm_volume_t with a refCount of 0 so that we
899 * have time to increment it.
901 lock_ConvertRToW(&cm_volumeLock);
903 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
904 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
905 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
906 if ( volp->refCount == 0 ) {
907 /* There is one we can re-use */
912 for ( volp = cm_data.volumeLRULastp;
914 volp = (cm_volume_t *) osi_QPrev(&volp->q))
916 if ( volp->refCount == 0 ) {
917 /* There is one we can re-use */
923 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
925 InterlockedIncrement(&volp->refCount);
926 lock_ReleaseWrite(&cm_volumeLock);
927 lock_ObtainWrite(&volp->rw);
928 lock_ObtainWrite(&cm_volumeLock);
930 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
931 volp->cellp->name, volp->namep);
933 /* The volp is removed from the LRU queue in order to
934 * prevent two threads from attempting to recycle the
935 * same object. This volp must be re-inserted back into
936 * the LRU queue before this function exits.
938 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
939 cm_RemoveVolumeFromLRU(volp);
940 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
941 cm_RemoveVolumeFromNameHashTable(volp);
943 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
944 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
945 cm_RemoveVolumeFromIDHashTable(volp, volType);
946 if (volp->vol[volType].ID)
947 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
948 volp->vol[volType].ID = 0;
949 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
950 lock_ReleaseWrite(&cm_volumeLock);
951 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
952 lock_ObtainWrite(&cm_volumeLock);
955 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
956 memset(volp, 0, sizeof(cm_volume_t));
957 volp->magic = CM_VOLUME_MAGIC;
958 volp->allNextp = cm_data.allVolumesp;
959 cm_data.allVolumesp = volp;
960 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
961 lock_ReleaseWrite(&cm_volumeLock);
962 lock_ObtainWrite(&volp->rw);
963 lock_ObtainWrite(&cm_volumeLock);
964 volp->refCount = 1; /* starts off held */
967 strncpy(volp->namep, name, VL_MAXNAMELEN);
968 volp->namep[VL_MAXNAMELEN-1] = '\0';
969 volp->flags = CM_VOLUMEFLAG_RESET;
970 volp->lastUpdateTime = 0;
972 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
973 volp->vol[volType].state = vl_unknown;
974 volp->vol[volType].nextp = NULL;
975 volp->vol[volType].flags = 0;
977 volp->cbExpiresRO = 0;
978 volp->cbIssuedRO = 0;
979 volp->cbServerpRO = NULL;
980 volp->creationDateRO = 0;
981 cm_AddVolumeToNameHashTable(volp);
982 lock_ReleaseWrite(&cm_volumeLock);
987 lock_ReleaseRead(&cm_volumeLock);
990 return CM_ERROR_NOSUCHVOLUME;
992 lock_ObtainWrite(&volp->rw);
995 /* if we get here we are holding the mutex */
996 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
997 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
999 lock_ReleaseWrite(&volp->rw);
1001 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
1002 type == ROVOL && volp->vol[ROVOL].ID == 0))
1003 code = CM_ERROR_NOSUCHVOLUME;
1008 lock_ObtainWrite(&cm_volumeLock);
1009 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1010 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1011 cm_AdjustVolumeLRU(volp);
1012 lock_ReleaseWrite(&cm_volumeLock);
1015 * do not return it to the caller but do insert it in the LRU
1016 * otherwise it will be lost
1018 lock_ObtainWrite(&cm_volumeLock);
1019 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1020 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1021 cm_AdjustVolumeLRU(volp);
1023 lock_ReleaseWrite(&cm_volumeLock);
1026 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1027 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1028 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1031 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1032 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1039 * Only call this function in response to a VNOVOL or VMOVED error
1040 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1041 * as that can lead to recursive calls.
1043 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1047 #ifdef SEARCH_ALL_VOLUMES
1054 return CM_ERROR_INVAL;
1056 cellp = cm_FindCellByID(fidp->cell, 0);
1058 return CM_ERROR_NOSUCHCELL;
1060 /* search for the volume */
1061 lock_ObtainRead(&cm_volumeLock);
1062 #ifdef SEARCH_ALL_VOLUMES
1063 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1064 if (cellp == volp->cellp &&
1065 (fidp->volume == volp->vol[RWVOL].ID ||
1066 fidp->volume == volp->vol[ROVOL].ID ||
1067 fidp->volume == volp->vol[BACKVOL].ID))
1070 #endif /* SEARCH_ALL_VOLUMES */
1072 hash = CM_VOLUME_ID_HASH(fidp->volume);
1073 /* The volumeID can be any one of the three types. So we must
1074 * search the hash table for all three types until we find it.
1075 * We will search in the order of RO, RW, BK.
1077 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1078 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1082 /* try RW volumes */
1083 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1084 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1089 /* try BK volumes */
1090 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1091 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1096 #ifdef SEARCH_ALL_VOLUMES
1097 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1099 /* hold the volume if we found it */
1103 lock_ReleaseRead(&cm_volumeLock);
1106 return CM_ERROR_NOSUCHVOLUME;
1109 cm_data.mountRootGen = time(NULL);
1110 lock_ObtainWrite(&volp->rw);
1111 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1112 volp->lastUpdateTime = 0;
1114 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1115 lock_ReleaseWrite(&volp->rw);
1117 lock_ObtainRead(&cm_volumeLock);
1119 lock_ReleaseRead(&cm_volumeLock);
1124 /* find the appropriate servers from a volume */
1125 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1127 cm_serverRef_t **serverspp;
1128 cm_serverRef_t *current;
1132 lock_ObtainWrite(&cm_serverLock);
1134 if (volume == volp->vol[RWVOL].ID)
1135 serverspp = &volp->vol[RWVOL].serversp;
1136 else if (volume == volp->vol[ROVOL].ID)
1137 serverspp = &volp->vol[ROVOL].serversp;
1138 else if (volume == volp->vol[BACKVOL].ID)
1139 serverspp = &volp->vol[BACKVOL].serversp;
1141 lock_ReleaseWrite(&cm_serverLock);
1145 lock_ObtainWrite(&volp->rw);
1146 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1147 volp->lastUpdateTime = 0;
1148 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1149 lock_ReleaseWrite(&volp->rw);
1157 * Increment the refCount on deleted items as well.
1158 * They will be freed by cm_FreeServerList when they get to zero
1160 for (current = *serverspp; current; current = current->next)
1161 cm_GetServerRef(current, TRUE);
1163 lock_ReleaseWrite(&cm_serverLock);
1168 void cm_PutVolume(cm_volume_t *volp)
1170 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1171 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1174 /* return the read-only volume, if there is one, or the read-write volume if
1177 long cm_GetROVolumeID(cm_volume_t *volp)
1181 lock_ObtainRead(&volp->rw);
1182 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1183 id = volp->vol[ROVOL].ID;
1185 id = volp->vol[RWVOL].ID;
1186 lock_ReleaseRead(&volp->rw);
1191 void cm_RefreshVolumes(int lifetime)
1199 /* force mount point target updates */
1200 if (cm_data.mountRootGen + lifetime <= now)
1201 cm_data.mountRootGen = now;
1204 * force a re-loading of volume data from the vldb
1205 * if the lifetime for the cached data has expired
1207 lock_ObtainRead(&cm_volumeLock);
1208 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1209 InterlockedIncrement(&volp->refCount);
1210 lock_ReleaseRead(&cm_volumeLock);
1212 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1213 lock_ObtainWrite(&volp->rw);
1214 if (volp->lastUpdateTime + lifetime <= now) {
1215 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1216 volp->lastUpdateTime = 0;
1218 lock_ReleaseWrite(&volp->rw);
1221 lock_ObtainRead(&cm_volumeLock);
1222 refCount = InterlockedDecrement(&volp->refCount);
1223 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1225 lock_ReleaseRead(&cm_volumeLock);
1229 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1230 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1234 AFSFetchVolumeStatus volStat;
1239 struct rx_connection * rxconnp;
1241 char offLineMsg[256];
1243 long alldown, alldeleted;
1244 cm_serverRef_t *serversp;
1248 OfflineMsg = offLineMsg;
1251 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1252 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1253 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1255 if (!statep->serversp && !(*volumeUpdatedp)) {
1257 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1258 *volumeUpdatedp = 1;
1261 lock_ObtainRead(&cm_serverLock);
1262 if (statep->serversp) {
1265 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1266 if (serversp->status == srv_deleted)
1271 if (!(serversp->server->flags & CM_SERVERFLAG_DOWN))
1274 if (serversp->status == srv_busy || serversp->status == srv_offline)
1275 serversp->status = srv_not_busy;
1277 lock_ReleaseRead(&cm_serverLock);
1279 if (alldeleted && !(*volumeUpdatedp)) {
1281 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1282 *volumeUpdatedp = 1;
1285 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1286 (!alldown && statep->state == vl_alldown)) {
1288 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1290 lock_ReleaseWrite(&volp->rw);
1292 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1296 rxconnp = cm_GetRxConn(connp);
1297 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1298 &volStat, &Name, &OfflineMsg, &MOTD);
1299 rx_PutConnection(rxconnp);
1300 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, 0, NULL, NULL, NULL, code));
1301 code = cm_MapRPCError(code, &req);
1303 lock_ObtainWrite(&volp->rw);
1304 if (code == 0 && volStat.Online) {
1305 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1306 statep->state = vl_online;
1308 } else if (code == CM_ERROR_NOACCESS) {
1309 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1310 statep->state = vl_unknown;
1313 } else if (alldown && statep->state != vl_alldown) {
1314 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1315 statep->state = vl_alldown;
1318 lock_ReleaseRead(&cm_serverLock);
1319 if (statep->state != vl_alldown) {
1320 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1321 statep->state = vl_alldown;
1327 /* The return code is 0 if the volume is not online and
1328 * 1 if the volume is online
1331 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1335 afs_uint32 online = 0;
1336 afs_uint32 volumeUpdated = 0;
1338 lock_ObtainWrite(&volp->rw);
1340 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1342 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1346 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1347 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1348 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1350 lock_ReleaseWrite(&volp->rw);
1356 * called from the Daemon thread.
1357 * when checking the offline status, check those of the most recently used volumes first.
1359 void cm_CheckOfflineVolumes(void)
1363 extern int daemon_ShutdownFlag;
1364 extern int powerStateSuspended;
1366 lock_ObtainRead(&cm_volumeLock);
1367 for (volp = cm_data.volumeLRULastp;
1368 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1369 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1371 * Skip volume entries that did not exist last time
1372 * the vldb was queried. For those entries wait until
1373 * the next actual request is received for the volume
1374 * before checking its state.
1376 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1377 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1378 InterlockedIncrement(&volp->refCount);
1379 lock_ReleaseRead(&cm_volumeLock);
1380 cm_CheckOfflineVolume(volp, 0);
1381 lock_ObtainRead(&cm_volumeLock);
1382 refCount = InterlockedDecrement(&volp->refCount);
1383 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1386 lock_ReleaseRead(&cm_volumeLock);
1391 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1393 enum volstatus newStatus;
1394 cm_serverRef_t *tsrp;
1396 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1399 if (!volp || !statep) {
1406 lock_ObtainWrite(&cm_serverLock);
1407 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1409 sprintf(addr, "%d.%d.%d.%d",
1410 ((tsp->addr.sin_addr.s_addr & 0xff)),
1411 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1412 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1413 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1415 if (tsrp->status == srv_deleted) {
1416 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1417 statep->ID, osi_LogSaveString(afsd_logp,addr));
1421 cm_GetServerNoLock(tsp);
1422 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1424 if (tsrp->status == srv_busy) {
1425 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1426 statep->ID, osi_LogSaveString(afsd_logp,addr));
1429 } else if (tsrp->status == srv_offline) {
1430 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1431 statep->ID, osi_LogSaveString(afsd_logp,addr));
1435 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1436 statep->ID, osi_LogSaveString(afsd_logp,addr));
1441 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1442 statep->ID, osi_LogSaveString(afsd_logp,addr));
1444 cm_PutServerNoLock(tsp);
1447 lock_ReleaseWrite(&cm_serverLock);
1449 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1450 allDown, allBusy, someBusy, someOffline, allOffline);
1453 newStatus = vl_alldown;
1454 else if (allBusy || (someBusy && someOffline))
1455 newStatus = vl_busy;
1456 else if (allOffline)
1457 newStatus = vl_offline;
1459 newStatus = vl_online;
1461 if (statep->ID && statep->state != newStatus)
1462 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1464 statep->state = newStatus;
1468 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1471 if (volp->vol[RWVOL].ID == volID) {
1472 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1473 } else if (volp->vol[ROVOL].ID == volID) {
1474 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1475 } else if (volp->vol[BACKVOL].ID == volID) {
1476 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1479 * If we are called with volID == 0 then something has gone wrong.
1480 * Most likely a race occurred in the server volume list maintenance.
1481 * Since we don't know which volume's status should be updated,
1482 * just update all of them that are known to exist. Better to be
1483 * correct than fast.
1486 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1487 if (volp->vol[volType].ID != 0)
1488 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1494 ** Finds all volumes that reside on this server and reorders their
1495 ** RO list according to the changed rank of server.
1497 void cm_ChangeRankVolume(cm_server_t *tsp)
1503 /* find volumes which might have RO copy on server*/
1504 lock_ObtainRead(&cm_volumeLock);
1505 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1507 code = 1 ; /* assume that list is unchanged */
1508 InterlockedIncrement(&volp->refCount);
1509 lock_ReleaseRead(&cm_volumeLock);
1510 lock_ObtainWrite(&volp->rw);
1512 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1513 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1515 /* this volume list was changed */
1517 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1519 lock_ReleaseWrite(&volp->rw);
1520 lock_ObtainRead(&cm_volumeLock);
1521 refCount = InterlockedDecrement(&volp->refCount);
1522 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1524 lock_ReleaseRead(&cm_volumeLock);
1527 /* dump all volumes that have reference count > 0 to a file.
1528 * cookie is used to identify this batch for easy parsing,
1529 * and it a string provided by a caller
1531 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1538 lock_ObtainRead(&cm_scacheLock);
1539 lock_ObtainRead(&cm_volumeLock);
1542 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1543 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1544 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1546 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1549 char *srvStr = NULL;
1550 afs_uint32 srvStrRpc = TRUE;
1554 if (volp->cbServerpRO) {
1555 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1556 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1557 srvStr = malloc(16);
1559 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1563 if (volp->cbExpiresRO) {
1564 t = volp->cbExpiresRO;
1568 cbt[strlen(cbt)-1] = '\0';
1571 if (volp->creationDateRO) {
1572 t = volp->creationDateRO;
1575 cdrot = strdup(cdrot);
1576 cdrot[strlen(cdrot)-1] = '\0';
1581 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1582 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1583 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1584 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1585 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1587 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1591 RpcStringFree(&srvStr);
1600 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1601 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1604 lock_ReleaseRead(&cm_volumeLock);
1605 lock_ReleaseRead(&cm_scacheLock);
1612 * String hash function used by SDBM project.
1613 * It was chosen because it is fast and provides
1616 afs_uint32 SDBMHash(const char * str)
1618 afs_uint32 hash = 0;
1624 for(i = 0, len = strlen(str); i < len; i++)
1626 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1629 return (hash & 0x7FFFFFFF);
1632 /* call with volume write-locked and mutex held */
1633 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1637 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1640 i = CM_VOLUME_NAME_HASH(volp->namep);
1642 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1643 cm_data.volumeNameHashTablep[i] = volp;
1644 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1647 /* call with volume write-locked and mutex held */
1648 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1650 cm_volume_t **lvolpp;
1654 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1655 /* hash it out first */
1656 i = CM_VOLUME_NAME_HASH(volp->namep);
1657 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1659 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1660 if (tvolp == volp) {
1661 *lvolpp = volp->nameNextp;
1662 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1663 volp->nameNextp = NULL;
1670 /* call with volume write-locked and mutex held */
1671 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1674 struct cm_vol_state * statep;
1676 statep = cm_VolumeStateByType(volp, volType);
1678 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1681 i = CM_VOLUME_ID_HASH(statep->ID);
1685 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1686 cm_data.volumeRWIDHashTablep[i] = volp;
1689 statep->nextp = cm_data.volumeROIDHashTablep[i];
1690 cm_data.volumeROIDHashTablep[i] = volp;
1693 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1694 cm_data.volumeBKIDHashTablep[i] = volp;
1697 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1701 /* call with volume write-locked and mutex held */
1702 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1704 cm_volume_t **lvolpp;
1706 struct cm_vol_state * statep;
1709 statep = cm_VolumeStateByType(volp, volType);
1711 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1712 /* hash it out first */
1713 i = CM_VOLUME_ID_HASH(statep->ID);
1717 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1718 tvolp = cm_data.volumeRWIDHashTablep[i];
1721 lvolpp = &cm_data.volumeROIDHashTablep[i];
1722 tvolp = cm_data.volumeROIDHashTablep[i];
1725 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1726 tvolp = cm_data.volumeBKIDHashTablep[i];
1729 osi_assertx(0, "invalid volume type");
1732 if (tvolp == volp) {
1733 *lvolpp = statep->nextp;
1734 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1735 statep->nextp = NULL;
1739 lvolpp = &tvolp->vol[volType].nextp;
1740 tvolp = tvolp->vol[volType].nextp;
1745 /* must be called with cm_volumeLock write-locked! */
1746 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1748 lock_AssertWrite(&cm_volumeLock);
1750 if (volp == cm_data.volumeLRUFirstp)
1753 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1754 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1755 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1756 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1758 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1761 /* must be called with cm_volumeLock write-locked! */
1762 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1764 lock_AssertWrite(&cm_volumeLock);
1766 if (volp == cm_data.volumeLRULastp)
1769 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1770 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1771 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1772 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1774 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1777 /* must be called with cm_volumeLock write-locked! */
1778 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1780 lock_AssertWrite(&cm_volumeLock);
1782 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1783 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1784 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1787 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1790 static char * volstatus_str(enum volstatus vs)
1806 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1808 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1811 if (volID == volp->vol[RWVOL].ID)
1813 else if (volID == volp->vol[ROVOL].ID)
1815 else if (volID == volp->vol[BACKVOL].ID)
1819 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1821 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1822 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1824 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1827 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1829 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1831 return statep->state;
1836 /* Renew .readonly volume callbacks that are more than
1837 * 30 minutes old. (A volume callback is issued for 2 hours.)
1840 cm_VolumeRenewROCallbacks(void)
1843 time_t minexp = time(NULL) + 90 * 60;
1844 extern int daemon_ShutdownFlag;
1845 extern int powerStateSuspended;
1847 lock_ObtainRead(&cm_volumeLock);
1848 for (volp = cm_data.allVolumesp;
1849 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1850 volp=volp->allNextp) {
1851 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1856 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1860 lock_ReleaseRead(&cm_volumeLock);
1861 if (cm_GetSCache(&fid, NULL, &scp, cm_rootUserp, &req) == 0) {
1862 lock_ObtainWrite(&scp->rw);
1863 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1864 lock_ReleaseWrite(&scp->rw);
1865 cm_ReleaseSCache(scp);
1867 lock_ObtainRead(&cm_volumeLock);
1870 lock_ReleaseRead(&cm_volumeLock);
1874 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1876 return &volp->vol[volType];
1880 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1882 cm_vol_state_t * statep = NULL;
1884 if (id == volp->vol[RWVOL].ID)
1885 statep = &volp->vol[RWVOL];
1886 else if (id == volp->vol[ROVOL].ID)
1887 statep = &volp->vol[ROVOL];
1888 else if (id == volp->vol[BACKVOL].ID)
1889 statep = &volp->vol[BACKVOL];
1895 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1897 size_t len = strlen(volname);
1898 cm_vol_state_t *statep;
1900 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1901 statep = &volp->vol[ROVOL];
1902 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1903 statep = &volp->vol[BACKVOL];
1905 statep = &volp->vol[RWVOL];
1911 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1913 if (id == volp->vol[RWVOL].ID)
1915 else if (id == volp->vol[ROVOL].ID)
1917 else if (id == volp->vol[BACKVOL].ID)