#include <afs/param.h>
#include <afs/stds.h>
-#ifndef DJGPP
#include <windows.h>
#include <nb30.h>
#include <winsock2.h>
-#endif /* !DJGPP */
#include <stdlib.h>
#include <stdio.h>
#include <malloc.h>
#include <osi.h>
#include <string.h>
+#define STRSAFE_NO_DEPRECATE
+#include <strsafe.h>
#include "afsd.h"
osi_rwlock_t cm_cellLock;
-cm_cell_t *cm_allCellsp;
-
/* function called as callback proc from cm_SearchCellFile. Return 0 to
- * continue processing.
+ * continue processing.
+ *
+ * At the present time the return value is ignored by the caller.
*/
-long cm_AddCellProc(void *rockp, struct sockaddr_in *addrp, char *namep)
+long cm_AddCellProc(void *rockp, struct sockaddr_in *addrp, char *hostnamep, unsigned short ipRank)
{
- cm_server_t *tsp;
- cm_serverRef_t *tsrp;
+ cm_server_t *tsp;
+ cm_serverRef_t *tsrp;
cm_cell_t *cellp;
+ cm_cell_rock_t *cellrockp = (cm_cell_rock_t *)rockp;
+ afs_uint32 probe;
- cellp = rockp;
+ cellp = cellrockp->cellp;
+ probe = !(cellrockp->flags & CM_FLAG_NOPROBE);
+
+ /* if this server was previously created by fs setserverprefs */
+ if ( tsp = cm_FindServer(addrp, CM_SERVER_VLDB))
+ {
+ if ( !tsp->cellp )
+ tsp->cellp = cellp;
+ else if (tsp->cellp != cellp) {
+ osi_Log3(afsd_logp, "found a vlserver %s associated with two cells named %s and %s",
+ osi_LogSaveString(afsd_logp,hostnamep),
+ osi_LogSaveString(afsd_logp,tsp->cellp->name),
+ osi_LogSaveString(afsd_logp,cellp->name));
+ }
+ }
+ else
+ tsp = cm_NewServer(addrp, CM_SERVER_VLDB, cellp, NULL, probe ? 0 : CM_FLAG_NOPROBE);
- /* if this server was previously created by fs setserverprefs */
- if ( tsp = cm_FindServer(addrp, CM_SERVER_VLDB))
- {
- if ( !tsp->cellp )
- tsp->cellp = cellp;
- }
- else
- tsp = cm_NewServer(addrp, CM_SERVER_VLDB, cellp);
+ if (ipRank)
+ tsp->ipRank = ipRank;
- /* Insert the vlserver into a sorted list, sorted by server rank */
- tsrp = cm_NewServerRef(tsp);
- cm_InsertServerList(&cellp->vlServersp, tsrp);
+ /* Insert the vlserver into a sorted list, sorted by server rank */
+ tsrp = cm_NewServerRef(tsp, 0);
+ cm_InsertServerList(&cellp->vlServersp, tsrp);
/* drop the allocation reference */
lock_ObtainWrite(&cm_serverLock);
tsrp->refCount--;
lock_ReleaseWrite(&cm_serverLock);
- return 0;
+
+ return 0;
}
-/* load up a cell structure from the cell database, afsdcell.ini */
-cm_cell_t *cm_GetCell(char *namep, long flags)
+/* if it's from DNS, see if it has expired
+ * and check to make sure we have a valid set of volume servers
+ * this function must not be called with a lock on cm_cellLock
+ */
+cm_cell_t *cm_UpdateCell(cm_cell_t * cp, afs_uint32 flags)
{
- return cm_GetCell_Gen(namep, NULL, flags);
+ long code = 0;
+ cm_cell_rock_t rock;
+ afs_uint32 mxheld = 0;
+
+ if (cp == NULL)
+ return NULL;
+
+ lock_ObtainMutex(&cp->mx);
+ mxheld = 1;
+ if ((cp->vlServersp == NULL
+#ifdef AFS_FREELANCE_CLIENT
+ && !(cp->flags & CM_CELLFLAG_FREELANCE)
+#endif
+ ) || (time(0) > cp->timeout)
+ || (cm_dnsEnabled && (cp->flags & CM_CELLFLAG_DNS) &&
+ ((cp->flags & CM_CELLFLAG_VLSERVER_INVALID)))
+ )
+ {
+ lock_ReleaseMutex(&cp->mx);
+ mxheld = 0;
+
+ /* must empty cp->vlServersp */
+ if (cp->vlServersp)
+ cm_FreeServerList(&cp->vlServersp, CM_FREESERVERLIST_DELETE);
+
+ rock.cellp = cp;
+ rock.flags = flags;
+ code = cm_SearchCellRegistry(1, cp->name, NULL, cp->linkedName, cm_AddCellProc, &rock);
+ if (code && code != CM_ERROR_FORCE_DNS_LOOKUP)
+ code = cm_SearchCellFileEx(cp->name, NULL, cp->linkedName, cm_AddCellProc, &rock);
+ if (code == 0) {
+ lock_ObtainMutex(&cp->mx);
+ mxheld = 1;
+ cp->timeout = time(0) + 7200;
+ }
+ else {
+ if (cm_dnsEnabled) {
+ int ttl;
+
+ code = cm_SearchCellByDNS(cp->name, NULL, &ttl, cm_AddCellProc, &rock);
+ if (code == 0) { /* got cell from DNS */
+ lock_ObtainMutex(&cp->mx);
+ mxheld = 1;
+ cp->flags |= CM_CELLFLAG_DNS;
+ cp->flags &= ~CM_CELLFLAG_VLSERVER_INVALID;
+ cp->timeout = time(0) + ttl;
+#ifdef DEBUG
+ fprintf(stderr, "cell %s: ttl=%d\n", cp->name, ttl);
+#endif
+ } else {
+ /* if we fail to find it this time, we'll just do nothing and leave the
+ * current entry alone
+ */
+ lock_ObtainMutex(&cp->mx);
+ mxheld = 1;
+ cp->flags |= CM_CELLFLAG_VLSERVER_INVALID;
+ }
+ }
+ }
+ }
+
+ if (code == 0)
+ cm_RandomizeServer(&cp->vlServersp);
+
+ if (mxheld)
+ lock_ReleaseMutex(&cp->mx);
+
+ return code ? NULL : cp;
+}
+
+/* load up a cell structure from the cell database, AFS_CELLSERVDB */
+cm_cell_t *cm_GetCell(char *namep, afs_uint32 flags)
+{
+ return cm_GetCell_Gen(namep, NULL, flags);
+}
+
+void cm_FreeCell(cm_cell_t *cellp)
+{
+ lock_AssertWrite(&cm_cellLock);
+
+ if (cellp->vlServersp)
+ cm_FreeServerList(&cellp->vlServersp, CM_FREESERVERLIST_DELETE);
+ cellp->name[0] = '\0';
+
+ cellp->freeNextp = cm_data.freeCellsp;
+ cm_data.freeCellsp = cellp;
}
-cm_cell_t *cm_GetCell_Gen(char *namep, char *newnamep, long flags)
+cm_cell_t *cm_GetCell_Gen(char *namep, char *newnamep, afs_uint32 flags)
{
- cm_cell_t *cp;
+ cm_cell_t *cp, *cp2;
long code;
- static cellCounter = 1; /* locked by cm_cellLock */
- int ttl;
- char fullname[200]="";
+ char fullname[CELL_MAXNAMELEN]="";
+ char linkedName[CELL_MAXNAMELEN]="";
+ char name[CELL_MAXNAMELEN]="";
+ int hasWriteLock = 0;
+ int hasMutex = 0;
+ afs_uint32 hash;
+ cm_cell_rock_t rock;
+ size_t len;
+
+ if (namep == NULL || !namep[0] || !strcmp(namep,CM_IOCTL_FILENAME_NOSLASH))
+ return NULL;
+
+ /*
+ * Strip off any trailing dots at the end of the cell name.
+ * Failure to do so results in an undesireable alias as the
+ * result of DNS AFSDB record lookups where a trailing dot
+ * has special meaning.
+ */
+ strncpy(name, namep, CELL_MAXNAMELEN);
+ for (len = strlen(namep); len > 0 && namep[len-1] == '.'; len--) {
+ name[len-1] = '\0';
+ }
+ if (len == 0)
+ return NULL;
+ namep = name;
- if (!strcmp(namep,SMB_IOCTL_FILENAME_NOSLASH))
- return NULL;
+ hash = CM_CELL_NAME_HASH(namep);
- lock_ObtainWrite(&cm_cellLock);
- for (cp = cm_allCellsp; cp; cp=cp->nextp) {
- if (strcmp(namep, cp->namep) == 0) {
- strcpy(fullname, cp->namep);
+ lock_ObtainRead(&cm_cellLock);
+ for (cp = cm_data.cellNameHashTablep[hash]; cp; cp=cp->nameNextp) {
+ if (cm_stricmp_utf8(namep, cp->name) == 0) {
+ strncpy(fullname, cp->name, CELL_MAXNAMELEN);
+ fullname[CELL_MAXNAMELEN-1] = '\0';
break;
- }
+ }
}
- if ((!cp && (flags & CM_FLAG_CREATE))
-#ifdef AFS_AFSDB_ENV
- /* if it's from DNS, see if it has expired */
- || (cp && (cp->flags & CM_CELLFLAG_DNS)
- && ((cp->flags & CM_CELLFLAG_VLSERVER_INVALID) || (time(0) > cp->timeout)))
-#endif
- ) {
- int dns_expired = 0;
- if (!cp) {
- cp = malloc(sizeof(cm_cell_t));
+ if (!cp) {
+ for (cp = cm_data.allCellsp; cp; cp=cp->allNextp) {
+ if (strnicmp(namep, cp->name, strlen(namep)) == 0) {
+ strncpy(fullname, cp->name, CELL_MAXNAMELEN);
+ fullname[CELL_MAXNAMELEN-1] = '\0';
+ break;
+ }
+ }
+ }
+
+ if (cp) {
+ lock_ReleaseRead(&cm_cellLock);
+ cm_UpdateCell(cp, flags);
+ } else if (flags & CM_FLAG_CREATE) {
+ lock_ConvertRToW(&cm_cellLock);
+ hasWriteLock = 1;
+
+ /* when we dropped the lock the cell could have been added
+ * to the list so check again while holding the write lock
+ */
+ for (cp = cm_data.cellNameHashTablep[hash]; cp; cp=cp->nameNextp) {
+ if (cm_stricmp_utf8(namep, cp->name) == 0) {
+ strncpy(fullname, cp->name, CELL_MAXNAMELEN);
+ fullname[CELL_MAXNAMELEN-1] = '\0';
+ break;
+ }
+ }
+
+ if (cp)
+ goto done;
+
+ for (cp = cm_data.allCellsp; cp; cp=cp->allNextp) {
+ if (strnicmp(namep, cp->name, strlen(namep)) == 0) {
+ strncpy(fullname, cp->name, CELL_MAXNAMELEN);
+ fullname[CELL_MAXNAMELEN-1] = '\0';
+ break;
+ }
+ }
+
+ if (cp) {
+ lock_ReleaseWrite(&cm_cellLock);
+ lock_ObtainMutex(&cp->mx);
+ lock_ObtainWrite(&cm_cellLock);
+ cm_AddCellToNameHashTable(cp);
+ cm_AddCellToIDHashTable(cp);
+ lock_ReleaseMutex(&cp->mx);
+ goto done;
+ }
+
+ if ( cm_data.freeCellsp != NULL ) {
+ cp = cm_data.freeCellsp;
+ cm_data.freeCellsp = cp->freeNextp;
+
+ /*
+ * The magic, cellID, and mx fields are already set.
+ */
+ } else {
+ if ( cm_data.currentCells >= cm_data.maxCells )
+ osi_panic("Exceeded Max Cells", __FILE__, __LINE__);
+
+ /* don't increment currentCells until we know that we
+ * are going to keep this entry
+ */
+ cp = &cm_data.cellBaseAddress[cm_data.currentCells];
memset(cp, 0, sizeof(cm_cell_t));
- }
- else {
- dns_expired = 1;
- /* must empty cp->vlServersp */
- cm_FreeServerList(&cp->vlServersp);
- cp->vlServersp = NULL;
+ cp->magic = CM_CELL_MAGIC;
+
+ /* the cellID cannot be 0 */
+ cp->cellID = ++cm_data.currentCells;
+
+ /* otherwise we found the cell, and so we're nearly done */
+ lock_InitializeMutex(&cp->mx, "cm_cell_t mutex", LOCK_HIERARCHY_CELL);
}
- code = cm_SearchCellFile(namep, fullname, cm_AddCellProc, cp);
- if (code) {
- afsi_log("in cm_GetCell_gen cm_SearchCellFile(%s) returns code= %d fullname= %s",
- namep, code, fullname);
+ lock_ReleaseWrite(&cm_cellLock);
+ hasWriteLock = 0;
+
+ rock.cellp = cp;
+ rock.flags = flags;
+ code = cm_SearchCellRegistry(1, namep, fullname, linkedName, cm_AddCellProc, &rock);
+ if (code && code != CM_ERROR_FORCE_DNS_LOOKUP)
+ code = cm_SearchCellFileEx(namep, fullname, linkedName, cm_AddCellProc, &rock);
+ if (code) {
+ osi_Log4(afsd_logp,"in cm_GetCell_gen cm_SearchCellFileEx(%s) returns code= %d fullname= %s linkedName= %s",
+ osi_LogSaveString(afsd_logp,namep), code, osi_LogSaveString(afsd_logp,fullname),
+ osi_LogSaveString(afsd_logp,linkedName));
+
+ if (cm_dnsEnabled) {
+ int ttl;
-#ifdef AFS_AFSDB_ENV
- if (cm_dnsEnabled /*&& cm_DomainValid(namep)*/) {
- code = cm_SearchCellByDNS(namep, fullname, &ttl, cm_AddCellProc, cp);
+ code = cm_SearchCellByDNS(namep, fullname, &ttl, cm_AddCellProc, &rock);
if ( code ) {
- afsi_log("in cm_GetCell_gen cm_SearchCellByDNS(%s) returns code= %d fullname= %s",
- namep, code, fullname);
- if (dns_expired) {
- cp->flags |= CM_CELLFLAG_VLSERVER_INVALID;
- cp = NULL; /* set cp to NULL to indicate error */
- goto done;
- }
- }
- else { /* got cell from DNS */
+ osi_Log3(afsd_logp,"in cm_GetCell_gen cm_SearchCellByDNS(%s) returns code= %d fullname= %s",
+ osi_LogSaveString(afsd_logp,namep), code, osi_LogSaveString(afsd_logp,fullname));
+ lock_ObtainMutex(&cp->mx);
+ lock_ObtainWrite(&cm_cellLock);
+ hasWriteLock = 1;
+ cm_RemoveCellFromIDHashTable(cp);
+ cm_RemoveCellFromNameHashTable(cp);
+ lock_ReleaseMutex(&cp->mx);
+ cm_FreeCell(cp);
+ cp = NULL;
+ goto done;
+ } else { /* got cell from DNS */
+ lock_ObtainMutex(&cp->mx);
+ hasMutex = 1;
cp->flags |= CM_CELLFLAG_DNS;
cp->flags &= ~CM_CELLFLAG_VLSERVER_INVALID;
cp->timeout = time(0) + ttl;
}
- }
-#endif
- if (cp && code) { /* free newly allocated memory */
- free(cp);
+ }
+ else
+ {
+ lock_ObtainMutex(&cp->mx);
+ lock_ObtainWrite(&cm_cellLock);
+ hasWriteLock = 1;
+ cm_RemoveCellFromIDHashTable(cp);
+ cm_RemoveCellFromNameHashTable(cp);
+ lock_ReleaseMutex(&cp->mx);
+ cm_FreeCell(cp);
cp = NULL;
goto done;
- }
- }
+ }
+ } else {
+ lock_ObtainMutex(&cp->mx);
+ hasMutex = 1;
+ cp->timeout = time(0) + 7200; /* two hour timeout */
+ }
- /* randomise among those vlservers having the same rank*/
- cm_RandomizeServer(&cp->vlServersp);
+ /* we have now been given the fullname of the cell. It may
+ * be that we already have a cell with that name. If so,
+ * we should use it instead of completing the allocation
+ * of a new cm_cell_t
+ */
+ lock_ObtainRead(&cm_cellLock);
+ hash = CM_CELL_NAME_HASH(fullname);
+ for (cp2 = cm_data.cellNameHashTablep[hash]; cp2; cp2=cp2->nameNextp) {
+ if (cm_stricmp_utf8(fullname, cp2->name) == 0) {
+ break;
+ }
+ }
-#ifdef AFS_AFSDB_ENV
- if (dns_expired) {
- /* we want to preserve the full name and mutex.
- * also, cp is already in the cm_allCellsp list
- */
+ if (cp2) {
+ if (!hasMutex) {
+ lock_ObtainMutex(&cp->mx);
+ hasMutex = 1;
+ }
+ lock_ConvertRToW(&cm_cellLock);
+ hasWriteLock = 1;
+ cm_RemoveCellFromIDHashTable(cp);
+ cm_RemoveCellFromNameHashTable(cp);
+ lock_ReleaseMutex(&cp->mx);
+ hasMutex = 0;
+ cm_FreeCell(cp);
+ cp = cp2;
goto done;
}
-#endif /* AFS_AFSDB_ENV */
+ lock_ReleaseRead(&cm_cellLock);
- /* otherwise we found the cell, and so we're nearly done */
- lock_InitializeMutex(&cp->mx, "cm_cell_t mutex");
+ /* randomise among those vlservers having the same rank*/
+ cm_RandomizeServer(&cp->vlServersp);
- /* copy in name */
- cp->namep = malloc(strlen(fullname)+1);
- strcpy(cp->namep, fullname);
+ if (!hasMutex)
+ lock_ObtainMutex(&cp->mx);
- /* thread on global list */
- cp->nextp = cm_allCellsp;
- cm_allCellsp = cp;
-
- cp->cellID = cellCounter++;
- }
+ /* copy in name */
+ strncpy(cp->name, fullname, CELL_MAXNAMELEN);
+ cp->name[CELL_MAXNAMELEN-1] = '\0';
+
+ strncpy(cp->linkedName, linkedName, CELL_MAXNAMELEN);
+ cp->linkedName[CELL_MAXNAMELEN-1] = '\0';
+ lock_ObtainWrite(&cm_cellLock);
+ hasWriteLock = 1;
+ cm_AddCellToNameHashTable(cp);
+ cm_AddCellToIDHashTable(cp);
+ lock_ReleaseMutex(&cp->mx);
+ hasMutex = 0;
+
+ /* append cell to global list */
+ if (cm_data.allCellsp == NULL) {
+ cm_data.allCellsp = cp;
+ } else {
+ for (cp2 = cm_data.allCellsp; cp2->allNextp; cp2=cp2->allNextp)
+ ;
+ cp2->allNextp = cp;
+ }
+ cp->allNextp = NULL;
+
+ } else {
+ lock_ReleaseRead(&cm_cellLock);
+ }
done:
+ if (hasMutex && cp)
+ lock_ReleaseMutex(&cp->mx);
+ if (hasWriteLock)
+ lock_ReleaseWrite(&cm_cellLock);
+
/* fullname is not valid if cp == NULL */
- if (cp && newnamep)
- strcpy(newnamep, fullname);
- lock_ReleaseWrite(&cm_cellLock);
+ if (newnamep) {
+ if (cp) {
+ strncpy(newnamep, fullname, CELL_MAXNAMELEN);
+ newnamep[CELL_MAXNAMELEN-1]='\0';
+ } else {
+ newnamep[0] = '\0';
+ }
+ }
+
+ if (cp && cp->linkedName[0]) {
+ cm_cell_t * linkedCellp = NULL;
+
+ if (!strcmp(cp->name, cp->linkedName)) {
+ cp->linkedName[0] = '\0';
+ } else if (!(flags & CM_FLAG_NOMOUNTCHASE)) {
+ linkedCellp = cm_GetCell(cp->linkedName, CM_FLAG_CREATE|CM_FLAG_NOPROBE|CM_FLAG_NOMOUNTCHASE);
+
+ lock_ObtainWrite(&cm_cellLock);
+ if (!linkedCellp ||
+ (linkedCellp->linkedName[0] && strcmp(cp->name, linkedCellp->linkedName))) {
+ cp->linkedName[0] = '\0';
+ } else {
+ strncpy(linkedCellp->linkedName, cp->name, CELL_MAXNAMELEN);
+ linkedCellp->linkedName[CELL_MAXNAMELEN-1]='\0';
+ }
+ lock_ReleaseWrite(&cm_cellLock);
+ }
+ }
return cp;
}
-cm_cell_t *cm_FindCellByID(long cellID)
+cm_cell_t *cm_FindCellByID(afs_int32 cellID, afs_uint32 flags)
{
- cm_cell_t *cp;
- int ttl;
- int code;
+ cm_cell_t *cp;
+ afs_uint32 hash;
+
+ lock_ObtainRead(&cm_cellLock);
- lock_ObtainWrite(&cm_cellLock);
- for(cp = cm_allCellsp; cp; cp=cp->nextp) {
- if (cellID == cp->cellID)
+ hash = CM_CELL_ID_HASH(cellID);
+
+ for (cp = cm_data.cellIDHashTablep[hash]; cp; cp=cp->idNextp) {
+ if (cellID == cp->cellID)
break;
}
+ lock_ReleaseRead(&cm_cellLock);
-#ifdef AFS_AFSDB_ENV
- /* if it's from DNS, see if it has expired */
- if (cp && cm_dnsEnabled && (cp->flags & CM_CELLFLAG_DNS) &&
- ((cp->flags & CM_CELLFLAG_VLSERVER_INVALID) || (time(0) > cp->timeout))) {
- /* must empty cp->vlServersp */
- cm_FreeServerList(&cp->vlServersp);
- cp->vlServersp = NULL;
+ if (cp)
+ cm_UpdateCell(cp, flags);
- code = cm_SearchCellByDNS(cp->namep, NULL, &ttl, cm_AddCellProc, cp);
- if (code == 0) { /* got cell from DNS */
- cp->flags |= CM_CELLFLAG_DNS;
- cp->flags &= ~CM_CELLFLAG_VLSERVER_INVALID;
-#ifdef DEBUG
- fprintf(stderr, "cell %s: ttl=%d\n", cp->namep, ttl);
-#endif
- cp->timeout = time(0) + ttl;
- } else {
- cp->flags |= CM_CELLFLAG_VLSERVER_INVALID;
- cp = NULL; /* return NULL to indicate failure */
+ return cp;
+}
+
+long
+cm_ValidateCell(void)
+{
+ cm_cell_t * cellp;
+ afs_uint32 count1, count2;
+
+ for (cellp = cm_data.allCellsp, count1 = 0; cellp; cellp=cellp->allNextp, count1++) {
+ if ( cellp->magic != CM_CELL_MAGIC ) {
+ afsi_log("cm_ValidateCell failure: cellp->magic != CM_CELL_MAGIC");
+ fprintf(stderr, "cm_ValidateCell failure: cellp->magic != CM_CELL_MAGIC\n");
+ return -1;
}
- /* if we fail to find it this time, we'll just do nothing and leave the
- * current entry alone
- */
- }
-#endif /* AFS_AFSDB_ENV */
+ if ( count1 != 0 && cellp == cm_data.allCellsp ||
+ count1 > cm_data.maxCells ) {
+ afsi_log("cm_ValidateCell failure: cm_data.allCellsp infinite loop");
+ fprintf(stderr, "cm_ValidateCell failure: cm_data.allCellsp infinite loop\n");
+ return -2;
+ }
+ }
- lock_ReleaseWrite(&cm_cellLock);
- return cp;
+ for (cellp = cm_data.freeCellsp, count2 = 0; cellp; cellp=cellp->freeNextp, count2++) {
+ if ( count2 != 0 && cellp == cm_data.freeCellsp ||
+ count2 > cm_data.maxCells ) {
+ afsi_log("cm_ValidateCell failure: cm_data.freeCellsp infinite loop");
+ fprintf(stderr, "cm_ValidateCell failure: cm_data.freeCellsp infinite loop\n");
+ return -3;
+ }
+ }
+
+ if ( (count1 + count2) != cm_data.currentCells ) {
+ afsi_log("cm_ValidateCell failure: count != cm_data.currentCells");
+ fprintf(stderr, "cm_ValidateCell failure: count != cm_data.currentCells\n");
+ return -4;
+ }
+
+ return 0;
+}
+
+
+long
+cm_ShutdownCell(void)
+{
+ cm_cell_t * cellp;
+
+ for (cellp = cm_data.allCellsp; cellp; cellp=cellp->allNextp)
+ lock_FinalizeMutex(&cellp->mx);
+
+ return 0;
}
-void cm_InitCell(void)
+
+void cm_InitCell(int newFile, long maxCells)
{
- static osi_once_t once;
+ static osi_once_t once;
if (osi_Once(&once)) {
- lock_InitializeRWLock(&cm_cellLock, "cell global lock");
- cm_allCellsp = NULL;
- osi_EndOnce(&once);
+ cm_cell_t * cellp;
+
+ lock_InitializeRWLock(&cm_cellLock, "cell global lock", LOCK_HIERARCHY_CELL_GLOBAL);
+
+ if ( newFile ) {
+ cm_data.allCellsp = NULL;
+ cm_data.currentCells = 0;
+ cm_data.maxCells = maxCells;
+ memset(cm_data.cellNameHashTablep, 0, sizeof(cm_cell_t *) * cm_data.cellHashTableSize);
+ memset(cm_data.cellIDHashTablep, 0, sizeof(cm_cell_t *) * cm_data.cellHashTableSize);
+
+#ifdef AFS_FREELANCE_CLIENT
+ /* Generate a dummy entry for the Freelance cell whether or not
+ * freelance mode is being used in this session
+ */
+
+ cellp = &cm_data.cellBaseAddress[cm_data.currentCells++];
+ memset(cellp, 0, sizeof(cm_cell_t));
+ cellp->magic = CM_CELL_MAGIC;
+
+ lock_InitializeMutex(&cellp->mx, "cm_cell_t mutex", LOCK_HIERARCHY_CELL);
+
+ lock_ObtainMutex(&cellp->mx);
+ lock_ObtainWrite(&cm_cellLock);
+
+ /* copy in name */
+ strncpy(cellp->name, "Freelance.Local.Cell", CELL_MAXNAMELEN); /*safe*/
+ cellp->name[CELL_MAXNAMELEN-1] = '\0';
+
+ /* thread on global list */
+ cellp->allNextp = cm_data.allCellsp;
+ cm_data.allCellsp = cellp;
+
+ cellp->cellID = AFS_FAKE_ROOT_CELL_ID;
+ cellp->vlServersp = NULL;
+ cellp->flags = CM_CELLFLAG_FREELANCE;
+
+ cm_AddCellToNameHashTable(cellp);
+ cm_AddCellToIDHashTable(cellp);
+ lock_ReleaseWrite(&cm_cellLock);
+ lock_ReleaseMutex(&cellp->mx);
+#endif
+ } else {
+ lock_ObtainRead(&cm_cellLock);
+ for (cellp = cm_data.allCellsp; cellp; cellp=cellp->allNextp) {
+ lock_InitializeMutex(&cellp->mx, "cm_cell_t mutex", LOCK_HIERARCHY_CELL);
+ cellp->vlServersp = NULL;
+ cellp->flags |= CM_CELLFLAG_VLSERVER_INVALID;
+ }
+ lock_ReleaseRead(&cm_cellLock);
+ }
+
+ osi_EndOnce(&once);
}
}
+
void cm_ChangeRankCellVLServer(cm_server_t *tsp)
{
- cm_cell_t *cp;
- int code;
-
- cp = tsp->cellp; /* cell that this vlserver belongs to */
- osi_assert(cp);
+ cm_cell_t *cp;
+ int code;
+ cp = tsp->cellp; /* cell that this vlserver belongs to */
+ if (cp) {
lock_ObtainMutex(&cp->mx);
code = cm_ChangeRankServer(&cp->vlServersp, tsp);
cm_RandomizeServer(&cp->vlServersp);
lock_ReleaseMutex(&cp->mx);
+ }
+}
+
+int cm_DumpCells(FILE *outputFile, char *cookie, int lock)
+{
+ cm_cell_t *cellp;
+ int zilch;
+ char output[1024];
+
+ if (lock)
+ lock_ObtainRead(&cm_cellLock);
+
+ sprintf(output, "%s - dumping cells - cm_data.currentCells=%d, cm_data.maxCells=%d\r\n",
+ cookie, cm_data.currentCells, cm_data.maxCells);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ for (cellp = cm_data.allCellsp; cellp; cellp=cellp->allNextp) {
+ sprintf(output, "%s cellp=0x%p,name=%s ID=%d flags=0x%x timeout=%I64u\r\n",
+ cookie, cellp, cellp->name, cellp->cellID, cellp->flags, cellp->timeout);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+ }
+
+ sprintf(output, "%s - Done dumping cells.\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ if (lock)
+ lock_ReleaseRead(&cm_cellLock);
+
+ return(0);
+}
+
+/* call with volume write-locked and mutex held */
+void cm_AddCellToNameHashTable(cm_cell_t *cellp)
+{
+ int i;
+
+ lock_AssertWrite(&cm_cellLock);
+ lock_AssertMutex(&cellp->mx);
+
+ if (cellp->flags & CM_CELLFLAG_IN_NAMEHASH)
+ return;
+
+ i = CM_CELL_NAME_HASH(cellp->name);
+
+ cellp->nameNextp = cm_data.cellNameHashTablep[i];
+ cm_data.cellNameHashTablep[i] = cellp;
+ cellp->flags |= CM_CELLFLAG_IN_NAMEHASH;
+}
+
+/* call with cell write-locked and mutex held */
+void cm_RemoveCellFromNameHashTable(cm_cell_t *cellp)
+{
+ cm_cell_t **lcellpp;
+ cm_cell_t *tcellp;
+ int i;
+
+ lock_AssertWrite(&cm_cellLock);
+ lock_AssertMutex(&cellp->mx);
+
+ if (cellp->flags & CM_CELLFLAG_IN_NAMEHASH) {
+ /* hash it out first */
+ i = CM_CELL_NAME_HASH(cellp->name);
+ for (lcellpp = &cm_data.cellNameHashTablep[i], tcellp = cm_data.cellNameHashTablep[i];
+ tcellp;
+ lcellpp = &tcellp->nameNextp, tcellp = tcellp->nameNextp) {
+ if (tcellp == cellp) {
+ *lcellpp = cellp->nameNextp;
+ cellp->flags &= ~CM_CELLFLAG_IN_NAMEHASH;
+ cellp->nameNextp = NULL;
+ break;
+ }
+ }
+ }
+}
+
+/* call with cell write-locked and mutex held */
+void cm_AddCellToIDHashTable(cm_cell_t *cellp)
+{
+ int i;
+
+ lock_AssertWrite(&cm_cellLock);
+ lock_AssertMutex(&cellp->mx);
+
+ if (cellp->flags & CM_CELLFLAG_IN_IDHASH)
+ return;
+
+ i = CM_CELL_ID_HASH(cellp->cellID);
+
+ cellp->idNextp = cm_data.cellIDHashTablep[i];
+ cm_data.cellIDHashTablep[i] = cellp;
+ cellp->flags |= CM_CELLFLAG_IN_IDHASH;
+}
+
+/* call with cell write-locked and mutex held */
+void cm_RemoveCellFromIDHashTable(cm_cell_t *cellp)
+{
+ cm_cell_t **lcellpp;
+ cm_cell_t *tcellp;
+ int i;
+
+ lock_AssertWrite(&cm_cellLock);
+ lock_AssertMutex(&cellp->mx);
+
+ if (cellp->flags & CM_CELLFLAG_IN_IDHASH) {
+ /* hash it out first */
+ i = CM_CELL_ID_HASH(cellp->cellID);
+ for (lcellpp = &cm_data.cellIDHashTablep[i], tcellp = cm_data.cellIDHashTablep[i];
+ tcellp;
+ lcellpp = &tcellp->idNextp, tcellp = tcellp->idNextp) {
+ if (tcellp == cellp) {
+ *lcellpp = cellp->idNextp;
+ cellp->flags &= ~CM_CELLFLAG_IN_IDHASH;
+ cellp->idNextp = NULL;
+ break;
+ }
+ }
+ }
}
git://git.openafs.org / openafs.git / blobdiff