/* called with locked scp; ensures that we have an ACL cache entry for the
* user specified by the parameter "userp."
* In pathological race conditions, this function may return success without
* having loaded the entry properly (due to a racing callback revoke), so this
* function must also be called in a while loop to make sure that we eventually
* succeed.
*/
long cm_GetAccessRights(struct cm_scache *scp, struct cm_user *userp,
struct cm_req *reqp)
{
long code;
cm_fid_t tfid;
cm_scache_t *aclScp = NULL;
int got_cb = 0;
cm_volume_t * volp = cm_FindVolumeByFID(&scp->fid, userp, reqp);
/* pretty easy: just force a pass through the fetch status code */
osi_Log2(afsd_logp, "GetAccessRights scp 0x%p user 0x%p", scp, userp);
/* first, start by finding out whether we have a directory or something
* else, so we can find what object's ACL we need.
*/
if (scp->fileType == CM_SCACHETYPE_DIRECTORY ||
cm_accessPerFileCheck ||
!volp || (volp->flags & CM_VOLUMEFLAG_DFS_VOLUME))
{
code = cm_SyncOp(scp, NULL, userp, reqp, 0,
CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_FORCECB);
if (!code)
cm_SyncOpDone(scp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
else
osi_Log3(afsd_logp, "GetAccessRights syncop failure scp %x user %x code %x", scp, userp, code);
} else {
/* not a dir, use parent dir's acl */
cm_SetFid(&tfid, scp->fid.cell, scp->fid.volume, scp->parentVnode, scp->parentUnique);
lock_ReleaseWrite(&scp->rw);
code = cm_GetSCache(&tfid, NULL, &aclScp, userp, reqp);
if (code) {
lock_ObtainWrite(&scp->rw);
goto _done;
}
osi_Log2(afsd_logp, "GetAccessRights parent scp %x user %x", aclScp, userp);
lock_ObtainWrite(&aclScp->rw);
code = cm_SyncOp(aclScp, NULL, userp, reqp, 0,
CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS | CM_SCACHESYNC_FORCECB);
if (!code)
cm_SyncOpDone(aclScp, NULL,
CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
else
osi_Log3(afsd_logp, "GetAccessRights parent syncop failure scp %x user %x code %x", aclScp, userp, code);
lock_ReleaseWrite(&aclScp->rw);
cm_ReleaseSCache(aclScp);
lock_ObtainWrite(&scp->rw);
}
_done:
if (volp)
cm_PutVolume(volp);
return code;
}
/* function called as callback proc from cm_SearchCellFile. Return 0 to
* continue processing.
*
* At the present time the return value is ignored by the caller.
*/
long cm_AddCellProc(void *rockp, struct sockaddr_in *addrp, char *hostnamep, unsigned short adminRank)
{
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 = 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, FALSE))
{
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 (adminRank)
tsp->adminRank = adminRank;
/* Insert the vlserver into a sorted list, sorted by server rank */
tsrp = cm_NewServerRef(tsp, 0);
cm_InsertServerList(&cellp->vlServersp, tsrp);
return 0;
}
/**
Handle a SMB_COM_READ for an RPC fid
Called from smb_ReceiveCoreRead when we receive a read on the RPC
fid */
afs_int32
smb_RPCRead(smb_fid_t *fidp, smb_vc_t *vcp, smb_packet_t *inp, smb_packet_t *outp)
{
smb_rpc_t *rpcp;
long count;
char *op;
afs_int32 code;
cm_user_t *userp;
count = smb_GetSMBParm(inp, 1);
userp = smb_GetUserFromVCP(vcp, inp);
osi_Log3(smb_logp, "smb_RPCRead for user[0x%p] fid[0x%p (%d)]",
userp, fidp, fidp->fid);
lock_ObtainMutex(&fidp->mx);
rpcp = fidp->rpcp;
code = smb_RPC_BeginOp(rpcp);
lock_ReleaseMutex(&fidp->mx);
if (code) {
cm_ReleaseUser(userp);
return code;
}
code = smb_RPC_PrepareRead(rpcp);
if (code) {
cm_ReleaseUser(userp);
smb_RPC_EndOp(rpcp);
return code;
}
count = smb_RPC_ReadPacketLength(rpcp, count);
/* now set the parms for a read of count bytes */
smb_SetSMBParm(outp, 0, count);
smb_SetSMBParm(outp, 1, 0);
smb_SetSMBParm(outp, 2, 0);
smb_SetSMBParm(outp, 3, 0);
smb_SetSMBParm(outp, 4, 0);
smb_SetSMBDataLength(outp, count+3);
op = smb_GetSMBData(outp, NULL);
*op++ = 1;
*op++ = (char)(count & 0xff);
*op++ = (char)((count >> 8) & 0xff);
smb_RPC_ReadPacket(rpcp, op, count);
smb_RPC_EndOp(rpcp);
cm_ReleaseUser(userp);
return 0;
}
unsigned long main_Scan2(unsigned long parm)
{
while (1) {
osi_Log0(main_logp, "scan2");
/* check to see if we're done */
lock_ObtainRead(&main_doneRWLock);
lock_AssertAny(&main_doneRWLock);
if (done >= 2) break;
lock_ReleaseRead(&main_doneRWLock);
/* check state for consistency without locks */
if (a+b != 100) s2Events++;
/* and record that we went around again */
s2Loops++;
/* give others a chance */
Sleep(0);
osi_Log3(main_logp, "scan2 done %d %d %d", s2Loops, 2, 3);
}
lock_ReleaseRead(&main_doneRWLock);
lock_ObtainWrite(&main_doneRWLock);
lock_AssertAny(&main_doneRWLock);
done++;
lock_ReleaseWrite(&main_doneRWLock);
return 0;
}
/**
Handle SMB_COM_WRITE_ANDX for an RPC fid
Called from smb_ReceiveV3WriteX when we receive a write call on the
RPC file descriptor.
*/
afs_int32
smb_RPCV3Write(smb_fid_t *fidp, smb_vc_t *vcp, smb_packet_t *inp, smb_packet_t *outp)
{
smb_rpc_t *rpcp;
long count;
afs_int32 code;
char *op;
cm_user_t *userp = NULL;
code = 0;
count = smb_GetSMBParm(inp, 10);
userp = smb_GetUserFromVCP(vcp, inp);
osi_Log3(smb_logp, "smb_RPCV3Write for user[0x%p] fid[0x%p (%d)]",
userp, fidp, fidp->fid);
if (userp == NULL) {
code = CM_ERROR_BADSMB;
goto done;
}
lock_ObtainMutex(&fidp->mx);
rpcp = fidp->rpcp;
code = smb_RPC_BeginOp(rpcp);
lock_ReleaseMutex(&fidp->mx);
if (code)
goto done;
smb_RPC_PrepareWrite(rpcp);
op = inp->data + smb_GetSMBParm(inp, 11);
code = smb_RPC_WritePacket(rpcp, op, count, userp);
smb_RPC_EndOp(rpcp);
done:
/* return # of bytes written */
if (code == 0) {
smb_SetSMBParm(outp, 2, count);
smb_SetSMBParm(outp, 3, 0); /* reserved */
smb_SetSMBParm(outp, 4, 0); /* reserved */
smb_SetSMBParm(outp, 5, 0); /* reserved */
smb_SetSMBDataLength(outp, 0);
}
if (userp)
cm_ReleaseUser(userp);
return code;
}
/* function called as callback proc from cm_SearchCellFile. Return 0 to
* continue processing.
*
* At the present time the return value is ignored by the caller.
*/
long cm_AddCellProc(void *rockp, struct sockaddr_in *addrp, char *hostnamep)
{
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 = 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, probe ? 0 : CM_FLAG_NOPROBE);
/* 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;
}
cm_cell_t *cm_GetCell_Gen(char *namep, char *newnamep, afs_uint32 flags)
{
cm_cell_t *cp, *cp2;
long code;
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;
hash = CM_CELL_NAME_HASH(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) {
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));
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);
}
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;
code = cm_SearchCellByDNS(namep, fullname, &ttl, cm_AddCellProc, &rock);
if ( code ) {
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;
_InterlockedOr(&cp->flags, CM_CELLFLAG_DNS);
_InterlockedAnd(&cp->flags, ~CM_CELLFLAG_VLSERVER_INVALID);
cp->timeout = time(0) + ttl;
}
}
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 */
}
/* 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;
}
}
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;
}
lock_ReleaseRead(&cm_cellLock);
/* randomise among those vlservers having the same rank*/
cm_RandomizeServer(&cp->vlServersp);
if (!hasMutex)
lock_ObtainMutex(&cp->mx);
/* 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 (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;
}
long cm_SearchCellFileEx(char *cellNamep, char *newCellNamep,
char *linkedNamep,
cm_configProc_t *procp, void *rockp)
{
char wdir[MAX_PATH]="";
FILE *tfilep = NULL, *bestp, *tempp;
char *tp, *linkp;
char lineBuffer[257];
struct hostent *thp;
char *valuep;
struct sockaddr_in vlSockAddr;
int inRightCell = 0;
int foundCell = 0;
long code;
int tracking = 1, partial = 0;
size_t len;
if ( IsWindowsModule(cellNamep) )
return -3;
cm_GetCellServDB(wdir, sizeof(wdir));
if (*wdir)
tfilep = fopen(wdir, "r");
if (!tfilep)
return -2;
bestp = fopen(wdir, "r");
#ifdef CELLSERV_DEBUG
osi_Log2(afsd_logp,"cm_searchfile fopen handle[%p], wdir[%s]", bestp,
osi_LogSaveString(afsd_logp,wdir));
#endif
/* have we seen the cell line for the guy we're looking for? */
while (1) {
linkp = NULL;
tp = fgets(lineBuffer, sizeof(lineBuffer), tfilep);
if (tracking)
(void) fgets(lineBuffer, sizeof(lineBuffer), bestp);
if (tp == NULL) {
if (feof(tfilep)) {
/* hit EOF */
if (partial) {
/*
* found partial match earlier;
* now go back to it
*/
tempp = bestp;
bestp = tfilep;
tfilep = tempp;
inRightCell = 1;
partial = 0;
continue;
}
else {
fclose(tfilep);
fclose(bestp);
return (foundCell? 0 : -3);
}
}
}
/* turn trailing cr or lf into null */
tp = strrchr(lineBuffer, '\r');
if (tp) *tp = 0;
tp = strrchr(lineBuffer, '\n');
if (tp) *tp = 0;
/* skip blank lines */
if (lineBuffer[0] == 0) continue;
/*
* The format is:
* >[cell] [linked-cell] #[Description]
* where linked-cell and Description are optional
*/
if (lineBuffer[0] == '>') {
if (inRightCell) {
fclose(tfilep);
fclose(bestp);
return(foundCell ? 0 : -6);
}
/*
* terminate the cellname at the first white space
* leaving 'tp' pointing to the next string if any
*/
for (tp = &lineBuffer[1]; tp && !isspace(*tp); tp++);
if (tp) {
*tp = '\0';
for (tp++ ;tp && isspace(*tp); tp++);
if (*tp != '#') {
linkp = tp;
for (; tp && !isspace(*tp); tp++);
if (tp)
*tp = '\0';
}
}
/* now see if this is the right cell */
if (stricmp(lineBuffer+1, cellNamep) == 0) {
/* found the cell we're looking for */
if (newCellNamep) {
if (FAILED(StringCchCopy(newCellNamep, CELL_MAXNAMELEN, lineBuffer+1))) {
fclose(tfilep);
fclose(bestp);
return(-1);
}
strlwr(newCellNamep);
}
if (linkedNamep) {
if (FAILED(StringCchCopy(linkedNamep, CELL_MAXNAMELEN, linkp ? linkp : ""))) {
fclose(tfilep);
fclose(bestp);
return(-1);
}
strlwr(linkedNamep);
}
inRightCell = 1;
tracking = 0;
#ifdef CELLSERV_DEBUG
osi_Log2(afsd_logp, "cm_searchfile is cell inRightCell[%p], linebuffer[%s]",
inRightCell, osi_LogSaveString(afsd_logp,lineBuffer));
#endif
}
else if (cm_stricmp_utf8(lineBuffer+1, cellNamep) == 0) {
/* partial match */
if (partial) { /* ambiguous */
fclose(tfilep);
fclose(bestp);
return -5;
}
if (newCellNamep) {
if (FAILED(StringCchCopy(newCellNamep, CELL_MAXNAMELEN, lineBuffer+1))) {
fclose(tfilep);
fclose(bestp);
return(-1);
}
strlwr(newCellNamep);
}
if (linkedNamep) {
if (FAILED(StringCchCopy(linkedNamep, CELL_MAXNAMELEN, linkp ? linkp : ""))) {
fclose(tfilep);
fclose(bestp);
return(-1);
}
strlwr(linkedNamep);
}
inRightCell = 0;
tracking = 0;
partial = 1;
}
else inRightCell = 0;
}
else {
valuep = strchr(lineBuffer, '#');
if (valuep == NULL) {
fclose(tfilep);
fclose(bestp);
return -4;
}
valuep++; /* skip the "#" */
valuep += strspn(valuep, " \t"); /* skip SP & TAB */
/*
* strip spaces and tabs in the end. They should not be there according to CellServDB format
* so do this just in case
*/
if(FAILED(StringCchLength(valuep, sizeof(lineBuffer), &len))) {
fclose(tfilep);
fclose(bestp);
return(-1);
} else {
len--;
while(isspace(valuep[len]))
valuep[len--] = '\0';
while(isspace(*valuep))
valuep++;
}
if (inRightCell) {
char hostname[256];
int i, isClone = 0;
isClone = (lineBuffer[0] == '[');
/* copy just the first word and ignore trailing white space */
for ( i=0; valuep[i] && !isspace(valuep[i]) && i<sizeof(hostname); i++)
hostname[i] = valuep[i];
hostname[i] = '\0';
/* add the server to the VLDB list */
WSASetLastError(0);
thp = gethostbyname(hostname);
#ifdef CELLSERV_DEBUG
osi_Log3(afsd_logp,"cm_searchfile inRightCell thp[%p], valuep[%s], WSAGetLastError[%d]",
thp, osi_LogSaveString(afsd_logp,hostname), WSAGetLastError());
#endif
if (thp) {
int foundAddr = 0;
for (i=0 ; thp->h_addr_list[i]; i++) {
if (thp->h_addrtype != AF_INET)
continue;
memcpy(&vlSockAddr.sin_addr.s_addr, thp->h_addr_list[i],
sizeof(long));
vlSockAddr.sin_port = htons(7003);
vlSockAddr.sin_family = AF_INET;
/* sin_port supplied by connection code */
if (procp)
(*procp)(rockp, &vlSockAddr, hostname, 0);
foundAddr = 1;
}
/* if we didn't find a valid address, force the use of the specified one */
if (!foundAddr)
thp = NULL;
}
if (!thp) {
afs_uint32 ip_addr;
unsigned int c1, c2, c3, c4;
/* Since there is no gethostbyname() data
* available we will read the IP address
* stored in the CellServDB file
*/
if (isClone)
code = sscanf(lineBuffer, "[%u.%u.%u.%u]",
&c1, &c2, &c3, &c4);
else
code = sscanf(lineBuffer, " %u.%u.%u.%u",
&c1, &c2, &c3, &c4);
if (code == 4 && c1<256 && c2<256 && c3<256 && c4<256) {
tp = (unsigned char *) &ip_addr;
*tp++ = c1;
*tp++ = c2;
*tp++ = c3;
*tp++ = c4;
memcpy(&vlSockAddr.sin_addr.s_addr, &ip_addr,
sizeof(long));
vlSockAddr.sin_port = htons(7003);
vlSockAddr.sin_family = AF_INET;
/* sin_port supplied by connection code */
if (procp)
(*procp)(rockp, &vlSockAddr, hostname, 0);
}
}
foundCell = 1;
}
} /* a vldb line */
} /* while loop processing all lines */
/* if for some unknown reason cell is not found, return negative code (-11) ??? */
return (foundCell) ? 0 : -11;
}
afs_int32
smb_RPCNmpipeTransact(smb_fid_t *fidp, smb_vc_t *vcp, smb_tran2Packet_t *p, smb_packet_t *op)
{
smb_tran2Packet_t *outp = NULL;
struct smb_rpc *rpcp;
afs_int32 code = 0;
cm_user_t * userp = NULL;
smb_user_t * uidp = NULL;
int len;
osi_Log0(smb_logp, "smb_RPCNmpipeTransact() begin");
uidp = smb_FindUID(vcp, p->uid, 0);
if (!uidp)
return CM_ERROR_BADSMB;
userp = smb_GetUserFromUID(uidp);
osi_assertx(userp != NULL, "null cm_user_t");
if (uidp && uidp->unp) {
osi_Log3(afsd_logp, "RPC Transact uid %d user %x name %S",
uidp->userID, userp,
osi_LogSaveClientString(afsd_logp, uidp->unp->name));
} else {
if (uidp)
osi_Log2(afsd_logp, "RPC Transact uid %d user %x no name",
uidp->userID, userp);
else
osi_Log1(afsd_logp, "RPC Transact no uid user %x no name",
userp);
}
lock_ObtainMutex(&fidp->mx);
rpcp = fidp->rpcp;
code = smb_RPC_BeginOp(rpcp);
if (code) {
osi_Log0(smb_logp, "Can't begin RPC op. Aborting");
lock_ReleaseMutex(&fidp->mx);
smb_ReleaseUID(uidp);
cm_ReleaseUser(userp);
return code;
}
osi_assertx((fidp->flags & SMB_FID_RPC), "FID wasn't setup for RPC");
osi_assertx(fidp->rpcp, "smb_rpc_t not associated with RPC FID");
lock_ReleaseMutex(&fidp->mx);
code = smb_RPC_PrepareWrite(rpcp);
if (code)
goto done;
code = smb_RPC_WritePacket(rpcp, p->datap, p->totalData, userp);
if (code)
goto done;
code = smb_RPC_PrepareRead(rpcp);
if (code)
goto done;
len = smb_RPC_ReadPacketLength(rpcp, p->maxReturnData);
outp = smb_GetTran2ResponsePacket(vcp, p, op, 0, len);
if (len > 0) {
code = smb_RPC_ReadPacket(rpcp, outp->datap, len);
if (code == CM_ERROR_RPC_MOREDATA) {
outp->error_code = CM_ERROR_RPC_MOREDATA;
}
}
if (code == 0 || code == CM_ERROR_RPC_MOREDATA)
smb_SendTran2Packet(vcp, outp, op);
smb_FreeTran2Packet(outp);
done:
smb_RPC_EndOp(rpcp);
osi_Log1(smb_logp, "smb_RPCNmpipeTransact() end code=%d", code);
if (uidp)
smb_ReleaseUID(uidp);
if (userp)
cm_ReleaseUser(userp);
return code;
}
/**
Handle SMB_COM_READ_ANDX for an RPC fid
Called from smb_ReceiveV3ReadX to handle RPC descriptor reads */
afs_int32
smb_RPCV3Read(smb_fid_t *fidp, smb_vc_t *vcp, smb_packet_t *inp, smb_packet_t *outp)
{
smb_rpc_t *rpcp;
long count;
afs_int32 code;
char *op;
cm_user_t *userp;
smb_user_t *uidp;
count = smb_GetSMBParm(inp, 5);
uidp = smb_FindUID(vcp, ((smb_t *)inp)->uid, 0);
if (!uidp)
return CM_ERROR_BADSMB;
userp = smb_GetUserFromUID(uidp);
osi_assertx(userp != NULL, "null cm_user_t");
osi_Log3(smb_logp, "smb_RPCV3Read for user[0x%p] fid[0x%p (%d)]",
userp, fidp, fidp->fid);
if (uidp && uidp->unp) {
osi_Log3(afsd_logp, "RPC uid %d user %x name %S",
uidp->userID, userp,
osi_LogSaveClientString(afsd_logp, uidp->unp->name));
} else {
if (uidp)
osi_Log2(afsd_logp, "RPC uid %d user %x no name",
uidp->userID, userp);
else
osi_Log1(afsd_logp, "RPC no uid user %x no name",
userp);
}
lock_ObtainMutex(&fidp->mx);
rpcp = fidp->rpcp;
code = smb_RPC_BeginOp(rpcp);
lock_ReleaseMutex(&fidp->mx);
if (code) {
if (uidp)
smb_ReleaseUID(uidp);
cm_ReleaseUser(userp);
return code;
}
code = smb_RPC_PrepareRead(rpcp);
if (uidp) {
smb_ReleaseUID(uidp);
}
if (code) {
cm_ReleaseUser(userp);
smb_RPC_EndOp(rpcp);
return code;
}
count = smb_RPC_ReadPacketLength(rpcp, count);
/* 0 and 1 are reserved for request chaining, were setup by our caller,
* and will be further filled in after we return.
*/
smb_SetSMBParm(outp, 2, 0); /* remaining bytes, for pipes */
smb_SetSMBParm(outp, 3, 0); /* resvd */
smb_SetSMBParm(outp, 4, 0); /* resvd */
smb_SetSMBParm(outp, 5, count); /* # of bytes we're going to read */
/* fill in #6 when we have all the parameters' space reserved */
smb_SetSMBParm(outp, 7, 0); /* resv'd */
smb_SetSMBParm(outp, 8, 0); /* resv'd */
smb_SetSMBParm(outp, 9, 0); /* resv'd */
smb_SetSMBParm(outp, 10, 0); /* resv'd */
smb_SetSMBParm(outp, 11, 0); /* reserved */
/* get op ptr after putting in the last parm, since otherwise we don't
* know where the data really is.
*/
op = smb_GetSMBData(outp, NULL);
/* now fill in offset from start of SMB header to first data byte (to op) */
smb_SetSMBParm(outp, 6, ((int) (op - outp->data)));
/* set the packet data length the count of the # of bytes */
smb_SetSMBDataLength(outp, count);
smb_RPC_ReadPacket(rpcp, op, count);
smb_RPC_EndOp(rpcp);
/* and cleanup things */
cm_ReleaseUser(userp);
return 0;
}
void * cm_BkgDaemon(void * vparm)
{
cm_bkgRequest_t *rp;
afs_int32 code;
char name[32] = "";
long daemonID = (long)(LONG_PTR)vparm;
snprintf(name, sizeof(name), "cm_BkgDaemon_ShutdownEvent%u", daemonID);
cm_BkgDaemon_ShutdownEvent[daemonID] = thrd_CreateEvent(NULL, FALSE, FALSE, name);
if ( GetLastError() == ERROR_ALREADY_EXISTS )
afsi_log("Event Object Already Exists: %s", name);
rx_StartClientThread();
lock_ObtainWrite(&cm_daemonLockp[daemonID]);
while (daemon_ShutdownFlag == 0) {
int willBlock = 0;
if (powerStateSuspended) {
Sleep(1000);
continue;
}
if (!cm_bkgListEndpp[daemonID]) {
osi_SleepW((LONG_PTR)&cm_bkgListpp[daemonID], &cm_daemonLockp[daemonID]);
lock_ObtainWrite(&cm_daemonLockp[daemonID]);
continue;
}
/* we found a request */
for (rp = cm_bkgListEndpp[daemonID]; rp; rp = (cm_bkgRequest_t *) osi_QPrev(&rp->q))
{
if (rp->scp->flags & CM_SCACHEFLAG_DELETED)
break;
/*
* If the request has active I/O such that this worker would
* be forced to block, leave the request in the queue and move
* on to one that might be available for servicing.
*/
if (cm_RequestWillBlock(rp)) {
willBlock++;
continue;
}
if (cm_ServerAvailable(&rp->scp->fid, rp->userp))
break;
}
if (rp == NULL) {
/*
* Couldn't find a request that we could process at the
* current time. If there were requests that would cause
* the worker to block, sleep for 25ms so it can promptly
* respond when it is available. Otherwise, sleep for 1s.
*
* This polling cycle needs to be replaced with a proper
* producer/consumer dynamic worker pool.
*/
osi_Log2(afsd_logp,"cm_BkgDaemon[%u] sleeping %dms all tasks would block",
daemonID, willBlock ? 100 : 1000);
lock_ReleaseWrite(&cm_daemonLockp[daemonID]);
Sleep(willBlock ? 100 : 1000);
lock_ObtainWrite(&cm_daemonLockp[daemonID]);
continue;
}
osi_QRemoveHT((osi_queue_t **) &cm_bkgListpp[daemonID], (osi_queue_t **) &cm_bkgListEndpp[daemonID], &rp->q);
osi_assertx(cm_bkgQueueCountp[daemonID]-- > 0, "cm_bkgQueueCount 0");
lock_ReleaseWrite(&cm_daemonLockp[daemonID]);
osi_Log2(afsd_logp,"cm_BkgDaemon[%u] processing request 0x%p", daemonID, rp);
if (rp->scp->flags & CM_SCACHEFLAG_DELETED) {
osi_Log2(afsd_logp,"cm_BkgDaemon[%u] DELETED scp 0x%x", daemonID, rp->scp);
code = CM_ERROR_BADFD;
} else {
#ifdef DEBUG_REFCOUNT
osi_Log3(afsd_logp,"cm_BkgDaemon[%u] (before) scp 0x%x ref %d", daemonID, rp->scp, rp->scp->refCount);
#endif
code = (*rp->procp)(rp->scp, rp->p1, rp->p2, rp->p3, rp->p4, rp->userp, &rp->req);
#ifdef DEBUG_REFCOUNT
osi_Log3(afsd_logp,"cm_BkgDaemon[%u] (after) scp 0x%x ref %d", daemonID, rp->scp, rp->scp->refCount);
#endif
}
/*
* Keep the following list synchronized with the
* error code list in cm_BkgStore.
* cm_SyncOpDone(CM_SCACHESYNC_ASYNCSTORE) will be called there unless
* one of these errors has occurred.
*/
switch ( code ) {
case CM_ERROR_TIMEDOUT: /* or server restarting */
case CM_ERROR_RETRY:
case CM_ERROR_WOULDBLOCK:
case CM_ERROR_ALLBUSY:
case CM_ERROR_ALLDOWN:
case CM_ERROR_ALLOFFLINE:
case CM_ERROR_PARTIALWRITE:
if (rp->procp == cm_BkgStore ||
rp->procp == RDR_BkgFetch) {
osi_Log3(afsd_logp,
"cm_BkgDaemon[%u] re-queueing failed request 0x%p code 0x%x",
daemonID, rp, code);
lock_ObtainWrite(&cm_daemonLockp[daemonID]);
cm_bkgQueueCountp[daemonID]++;
osi_QAddT((osi_queue_t **) &cm_bkgListpp[daemonID], (osi_queue_t **)&cm_bkgListEndpp[daemonID], &rp->q);
break;
} /* otherwise fall through */
case 0: /* success */
default: /* other error */
if (code == 0) {
osi_Log2(afsd_logp,"cm_BkgDaemon[%u] SUCCESS: request 0x%p", daemonID, rp);
} else {
osi_Log3(afsd_logp,"cm_BkgDaemon[%u] FAILED: request dropped 0x%p code 0x%x",
daemonID, rp, code);
}
cm_ReleaseUser(rp->userp);
cm_ReleaseSCache(rp->scp);
free(rp);
lock_ObtainWrite(&cm_daemonLockp[daemonID]);
}
}
lock_ReleaseWrite(&cm_daemonLockp[daemonID]);
thrd_SetEvent(cm_BkgDaemon_ShutdownEvent[daemonID]);
pthread_exit(NULL);
return NULL;
}
void
cm_PingServer(cm_server_t *tsp)
{
long code;
int wasDown = 0;
cm_conn_t *connp;
struct rx_connection * rxconnp;
Capabilities caps = {0, 0};
char hoststr[16];
cm_req_t req;
lock_ObtainMutex(&tsp->mx);
if (InterlockedIncrement(&tsp->pingCount) > 1) {
tsp->waitCount++;
osi_SleepM((LONG_PTR)tsp, &tsp->mx);
lock_ObtainMutex(&tsp->mx);
InterlockedDecrement(&tsp->pingCount);
if (--tsp->waitCount > 0)
osi_Wakeup((LONG_PTR)tsp);
lock_ReleaseMutex(&tsp->mx);
return;
}
wasDown = tsp->flags & CM_SERVERFLAG_DOWN;
afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
lock_ReleaseMutex(&tsp->mx);
if (cm_noIPAddr > 0)
code = cm_ConnByServer(tsp, cm_rootUserp, FALSE, &connp);
else
code = RX_CALL_DEAD; /* No network */
if (code == 0) {
/* now call the appropriate ping call. Drop the timeout if
* the server is known to be down, so that we don't waste a
* lot of time retiming out down servers.
*/
osi_Log4(afsd_logp, "cm_PingServer server %s (%s) was %s with caps 0x%x",
osi_LogSaveString(afsd_logp, hoststr),
tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
wasDown ? "down" : "up",
tsp->capabilities);
rxconnp = cm_GetRxConn(connp);
if (wasDown)
rx_SetConnHardDeadTime(rxconnp, 10);
if (tsp->type == CM_SERVER_VLDB) {
code = VL_ProbeServer(rxconnp);
}
else {
/* file server */
code = RXAFS_GetCapabilities(rxconnp, &caps);
}
if (wasDown)
rx_SetConnHardDeadTime(rxconnp, HardDeadtimeout);
rx_PutConnection(rxconnp);
cm_PutConn(connp);
} /* got an unauthenticated connection to this server */
lock_ObtainMutex(&tsp->mx);
if (code >= 0 || code == RXGEN_OPCODE) {
/* mark server as up */
_InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_DOWN);
tsp->downTime = 0;
/* we currently handle 32-bits of capabilities */
if (code != RXGEN_OPCODE && caps.Capabilities_len > 0) {
tsp->capabilities = caps.Capabilities_val[0];
xdr_free((xdrproc_t) xdr_Capabilities, &caps);
caps.Capabilities_len = 0;
caps.Capabilities_val = 0;
} else {
tsp->capabilities = 0;
}
osi_Log3(afsd_logp, "cm_PingServer server %s (%s) is up with caps 0x%x",
osi_LogSaveString(afsd_logp, hoststr),
tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
tsp->capabilities);
/* Now update the volume status if necessary */
if (wasDown) {
cm_server_vols_t * tsrvp;
cm_volume_t * volp;
int i;
for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
for (i=0; i<NUM_SERVER_VOLS; i++) {
if (tsrvp->ids[i] != 0) {
cm_InitReq(&req);
lock_ReleaseMutex(&tsp->mx);
code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
&req, CM_GETVOL_FLAG_NO_LRU_UPDATE, &volp);
lock_ObtainMutex(&tsp->mx);
if (code == 0) {
cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
cm_PutVolume(volp);
}
}
}
}
cm_RankServer(tsp);
}
} else {
cm_MarkServerDown(tsp, code, wasDown);
osi_Log3(afsd_logp, "cm_PingServer server %s (%s) is down with caps 0x%x",
osi_LogSaveString(afsd_logp, hoststr),
tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
tsp->capabilities);
}
InterlockedDecrement(&tsp->pingCount);
if (tsp->waitCount > 0)
osi_Wakeup((LONG_PTR)tsp);
lock_ReleaseMutex(&tsp->mx);
}