/* ignores all remaining multiRx calls */
void
multi_Finalize_Ignore(struct multi_handle *mh)
{
int i;
int nCalls = mh->nConns;
for (i = 0; i < nCalls; i++) {
struct rx_call *call = mh->calls[i];
if (call)
rx_EndCall(call, 0);
}
#ifdef RX_ENABLE_LOCKS
MUTEX_DESTROY(&mh->lock);
CV_DESTROY(&mh->cv);
#endif /* RX_ENABLE_LOCKS */
osi_Free(mh->calls, sizeof(struct rx_call *) * nCalls);
osi_Free(mh->ready, sizeof(short *) * nCalls);
osi_Free(mh, sizeof(struct multi_handle));
}
static void
shutdown_rxevent(void)
{
struct xfreelist *xp, *nxp;
initialized = 0;
#if defined(AFS_AIX32_ENV) && defined(KERNEL)
/* Everything is freed in afs_osinet.c */
#else
while ((xp = xfreemallocs) != NULL) {
nxp = xp->next;
osi_Free((char *) xp, sizeof(struct rxevent) * rxevent_allocUnit);
}
#endif
}
static long
DoClient(int index, opaque rock)
{
struct client *c = (struct client *)rock;
long code = 0;
int i;
u_long n, inc_n;
n = 95678;
for (i = 0; i < c->fastCalls[index]; i++) {
code = RXKST_Fast(c->conn, n, &inc_n);
if (code)
return (code);
if (n + 1 != inc_n)
return RXKST_INCFAILED;
n++;
}
for (i = 0; i < c->slowCalls[index]; i++) {
u_long ntime;
u_long now;
code = RXKST_Slow(c->conn, 1, &ntime);
if (code)
return (code);
now = FT_ApproxTime();
if ((ntime < now - maxSkew) || (ntime > now + maxSkew))
return RXKST_TIMESKEW;
}
if (c->copiousCalls[index] > 0) {
u_long buflen = 10000;
char *buf = osi_Alloc(buflen);
for (i = 0; i < c->copiousCalls[index]; i++) {
code = Copious(c, buf, buflen);
if (code)
break;
}
osi_Free(buf, buflen);
if (code)
return code;
}
return 0;
}
/* afs_put_super
* Called from unmount to release super_block. */
static void
afs_put_super(struct super_block *sbp)
{
AFS_GLOCK();
AFS_STATCNT(afs_unmount);
afs_globalVFS = 0;
afs_globalVp = 0;
osi_linux_free_inode_pages(); /* invalidate and release remaining AFS inodes. */
afs_shutdown();
mntput(afs_cacheMnt);
osi_linux_verify_alloced_memory();
#if defined(HAVE_LINUX_BDI_INIT)
bdi_destroy(afs_backing_dev_info);
#endif
osi_Free(afs_backing_dev_info, sizeof(struct backing_dev_info));
AFS_GUNLOCK();
sbp->s_dev = 0;
module_put(THIS_MODULE);
}
/* Cannot have static linkage--called from BPrefetch (afs_daemons) */
afs_int32
afs_PrefetchNoCache(struct vcache *avc,
afs_ucred_t *acred,
struct nocache_read_request *bparms)
{
struct uio *auio;
#ifndef UKERNEL
struct iovec *iovecp;
#endif
struct vrequest *areq;
afs_int32 code = 0;
struct rx_connection *rxconn;
#ifdef AFS_64BIT_CLIENT
afs_int32 length_hi, bytes, locked;
#endif
struct afs_conn *tc;
struct rx_call *tcall;
struct tlocal1 {
struct AFSVolSync tsync;
struct AFSFetchStatus OutStatus;
struct AFSCallBack CallBack;
};
struct tlocal1 *tcallspec;
auio = bparms->auio;
areq = bparms->areq;
#ifndef UKERNEL
iovecp = auio->uio_iov;
#endif
tcallspec = osi_Alloc(sizeof(struct tlocal1));
do {
tc = afs_Conn(&avc->f.fid, areq, SHARED_LOCK /* ignored */, &rxconn);
if (tc) {
avc->callback = tc->parent->srvr->server;
tcall = rx_NewCall(rxconn);
#ifdef AFS_64BIT_CLIENT
if (!afs_serverHasNo64Bit(tc)) {
code = StartRXAFS_FetchData64(tcall,
(struct AFSFid *) &avc->f.fid.Fid,
auio->uio_offset,
bparms->length);
if (code == 0) {
COND_GUNLOCK(locked);
bytes = rx_Read(tcall, (char *)&length_hi,
sizeof(afs_int32));
COND_RE_GLOCK(locked);
if (bytes != sizeof(afs_int32)) {
length_hi = 0;
code = rx_Error(tcall);
COND_GUNLOCK(locked);
code = rx_EndCall(tcall, code);
COND_RE_GLOCK(locked);
tcall = NULL;
}
}
} /* afs_serverHasNo64Bit */
if (code == RXGEN_OPCODE || afs_serverHasNo64Bit(tc)) {
if (auio->uio_offset > 0x7FFFFFFF) {
code = EFBIG;
} else {
afs_int32 pos;
pos = auio->uio_offset;
COND_GUNLOCK(locked);
if (!tcall)
tcall = rx_NewCall(rxconn);
code = StartRXAFS_FetchData(tcall,
(struct AFSFid *) &avc->f.fid.Fid,
pos, bparms->length);
COND_RE_GLOCK(locked);
}
afs_serverSetNo64Bit(tc);
}
#else
code = StartRXAFS_FetchData(tcall,
(struct AFSFid *) &avc->f.fid.Fid,
auio->uio_offset, bparms->length);
#endif
if (code == 0) {
code = afs_NoCacheFetchProc(tcall, avc, auio,
1 /* release_pages */,
bparms->length);
} else {
afs_warn("BYPASS: StartRXAFS_FetchData failed: %d\n", code);
unlock_and_release_pages(auio);
goto done;
}
if (code == 0) {
code = EndRXAFS_FetchData(tcall, &tcallspec->OutStatus,
&tcallspec->CallBack,
&tcallspec->tsync);
} else {
afs_warn("BYPASS: NoCacheFetchProc failed: %d\n", code);
}
code = rx_EndCall(tcall, code);
} else {
afs_warn("BYPASS: No connection.\n");
code = -1;
unlock_and_release_pages(auio);
goto done;
}
} while (afs_Analyze(tc, rxconn, code, &avc->f.fid, areq,
AFS_STATS_FS_RPCIDX_FETCHDATA,
SHARED_LOCK,0));
done:
/*
* Copy appropriate fields into vcache
*/
if (!code)
afs_ProcessFS(avc, &tcallspec->OutStatus, areq);
osi_Free(areq, sizeof(struct vrequest));
osi_Free(tcallspec, sizeof(struct tlocal1));
osi_Free(bparms, sizeof(struct nocache_read_request));
#ifndef UKERNEL
/* in UKERNEL, the "pages" are passed in */
osi_Free(iovecp, auio->uio_iovcnt * sizeof(struct iovec));
osi_Free(auio, sizeof(struct uio));
#endif
return code;
}
/* dispatch a no-cache read request */
afs_int32
afs_ReadNoCache(struct vcache *avc,
struct nocache_read_request *bparms,
afs_ucred_t *acred)
{
afs_int32 code;
afs_int32 bcnt;
struct brequest *breq;
struct vrequest *areq;
/* the reciever will free this */
areq = osi_Alloc(sizeof(struct vrequest));
if (avc->vc_error) {
code = EIO;
afs_warn("afs_ReadNoCache VCache Error!\n");
goto cleanup;
}
if ((code = afs_InitReq(areq, acred))) {
afs_warn("afs_ReadNoCache afs_InitReq error!\n");
goto cleanup;
}
AFS_GLOCK();
code = afs_VerifyVCache(avc, areq);
AFS_GUNLOCK();
if (code) {
code = afs_CheckCode(code, areq, 11); /* failed to get it */
afs_warn("afs_ReadNoCache Failed to verify VCache!\n");
goto cleanup;
}
bparms->areq = areq;
/* and queue this one */
bcnt = 1;
AFS_GLOCK();
while(bcnt < 20) {
breq = afs_BQueue(BOP_FETCH_NOCACHE, avc, B_DONTWAIT, 0, acred, 1, 1,
bparms, (void *)0, (void *)0);
if(breq != 0) {
code = 0;
break;
}
afs_osi_Wait(10 * bcnt, 0, 0);
}
AFS_GUNLOCK();
if(!breq) {
code = EBUSY;
goto cleanup;
}
return code;
cleanup:
/* If there's a problem before we queue the request, we need to
* do everything that would normally happen when the request was
* processed, like unlocking the pages and freeing memory.
*/
unlock_and_release_pages(bparms->auio);
osi_Free(areq, sizeof(struct vrequest));
osi_Free(bparms->auio->uio_iov,
bparms->auio->uio_iovcnt * sizeof(struct iovec));
osi_Free(bparms->auio, sizeof(struct uio));
osi_Free(bparms, sizeof(struct nocache_read_request));
return code;
}
/*
* afs_TruncateAllSegments
*
* Description:
* Truncate a cache file.
*
* Parameters:
* avc : Ptr to vcache entry to truncate.
* alen : Number of bytes to make the file.
* areq : Ptr to request structure.
*
* Environment:
* Called with avc write-locked; in VFS40 systems, pvnLock is also
* held.
*/
int
afs_TruncateAllSegments(struct vcache *avc, afs_size_t alen,
struct vrequest *areq, afs_ucred_t *acred)
{
struct dcache *tdc;
afs_int32 code;
afs_int32 index;
afs_size_t newSize;
int dcCount, dcPos;
struct dcache **tdcArray = NULL;
AFS_STATCNT(afs_TruncateAllSegments);
avc->f.m.Date = osi_Time();
afs_Trace3(afs_iclSetp, CM_TRACE_TRUNCALL, ICL_TYPE_POINTER, avc,
ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length),
ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(alen));
if (alen >= avc->f.m.Length) {
/*
* Special speedup since Sun's vm extends the file this way;
* we've never written to the file thus we can just set the new
* length and avoid the needless calls below.
* Also used for ftruncate calls which can extend the file.
* To completely minimize the possible extra StoreMini RPC, we really
* should keep the ExtendedPos as well and clear this flag if we
* truncate below that value before we store the file back.
*/
avc->f.states |= CExtendedFile;
avc->f.m.Length = alen;
return 0;
}
#if (defined(AFS_SUN5_ENV))
/* Zero unused portion of last page */
osi_VM_PreTruncate(avc, alen, acred);
#endif
#if (defined(AFS_SUN5_ENV))
ObtainWriteLock(&avc->vlock, 546);
avc->activeV++; /* Block new getpages */
ReleaseWriteLock(&avc->vlock);
#endif
ReleaseWriteLock(&avc->lock);
AFS_GUNLOCK();
/* Flush pages beyond end-of-file. */
osi_VM_Truncate(avc, alen, acred);
AFS_GLOCK();
ObtainWriteLock(&avc->lock, 79);
avc->f.m.Length = alen;
if (alen < avc->f.truncPos)
avc->f.truncPos = alen;
code = DVHash(&avc->f.fid);
/* block out others from screwing with this table */
ObtainWriteLock(&afs_xdcache, 287);
dcCount = 0;
for (index = afs_dvhashTbl[code]; index != NULLIDX;) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetValidDSlot(index);
if (!tdc) {
ReleaseWriteLock(&afs_xdcache);
code = EIO;
goto done;
}
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid))
dcCount++;
afs_PutDCache(tdc);
}
index = afs_dvnextTbl[index];
}
/* Now allocate space where we can save those dcache entries, and
* do a second pass over them.. Since we're holding xdcache, it
* shouldn't be changing.
*/
tdcArray = osi_Alloc(dcCount * sizeof(struct dcache *));
dcPos = 0;
for (index = afs_dvhashTbl[code]; index != NULLIDX; index = afs_dvnextTbl[index]) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetValidDSlot(index);
if (!tdc) {
/* make sure we put back all of the tdcArray members before
* bailing out */
/* remember, the last valid tdc is at dcPos-1, so start at
* dcPos-1, not at dcPos itself. */
for (dcPos = dcPos - 1; dcPos >= 0; dcPos--) {
tdc = tdcArray[dcPos];
afs_PutDCache(tdc);
}
code = EIO;
goto done;
}
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid)) {
/* same file, and modified, we'll store it back */
if (dcPos < dcCount) {
tdcArray[dcPos++] = tdc;
} else {
afs_PutDCache(tdc);
}
} else {
afs_PutDCache(tdc);
}
}
}
ReleaseWriteLock(&afs_xdcache);
/* Now we loop over the array of dcache entries and truncate them */
for (index = 0; index < dcPos; index++) {
struct osi_file *tfile;
tdc = tdcArray[index];
newSize = alen - AFS_CHUNKTOBASE(tdc->f.chunk);
if (newSize < 0)
newSize = 0;
ObtainSharedLock(&tdc->lock, 672);
if (newSize < tdc->f.chunkBytes && newSize < MAX_AFS_UINT32) {
UpgradeSToWLock(&tdc->lock, 673);
tdc->f.states |= DWriting;
tfile = afs_CFileOpen(&tdc->f.inode);
afs_CFileTruncate(tfile, (afs_int32)newSize);
afs_CFileClose(tfile);
afs_AdjustSize(tdc, (afs_int32)newSize);
if (alen < tdc->validPos) {
if (alen < AFS_CHUNKTOBASE(tdc->f.chunk))
tdc->validPos = 0;
else
tdc->validPos = alen;
}
ConvertWToSLock(&tdc->lock);
}
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
}
code = 0;
done:
if (tdcArray) {
osi_Free(tdcArray, dcCount * sizeof(struct dcache *));
}
#if (defined(AFS_SUN5_ENV))
ObtainWriteLock(&avc->vlock, 547);
if (--avc->activeV == 0 && (avc->vstates & VRevokeWait)) {
avc->vstates &= ~VRevokeWait;
afs_osi_Wakeup((char *)&avc->vstates);
}
ReleaseWriteLock(&avc->vlock);
#endif
return code;
}
int
afs_InvalidateAllSegments(struct vcache *avc)
{
struct dcache *tdc;
afs_int32 hash;
afs_int32 index;
struct dcache **dcList;
int i, dcListMax, dcListCount;
AFS_STATCNT(afs_InvalidateAllSegments);
afs_Trace2(afs_iclSetp, CM_TRACE_INVALL, ICL_TYPE_POINTER, avc,
ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
hash = DVHash(&avc->f.fid);
avc->f.truncPos = AFS_NOTRUNC; /* don't truncate later */
avc->f.states &= ~CExtendedFile; /* not any more */
ObtainWriteLock(&afs_xcbhash, 459);
afs_DequeueCallback(avc);
avc->f.states &= ~(CStatd | CDirty); /* mark status information as bad, too */
ReleaseWriteLock(&afs_xcbhash);
if (avc->f.fid.Fid.Vnode & 1 || (vType(avc) == VDIR))
osi_dnlc_purgedp(avc);
/* Blow away pages; for now, only for Solaris */
#if (defined(AFS_SUN5_ENV))
if (WriteLocked(&avc->lock))
osi_ReleaseVM(avc, (afs_ucred_t *)0);
#endif
/*
* Block out others from screwing with this table; is a read lock
* sufficient?
*/
ObtainWriteLock(&afs_xdcache, 286);
dcListMax = 0;
for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetValidDSlot(index);
if (!tdc) {
/* In the case of fatal errors during stores, we MUST
* invalidate all of the relevant chunks. Otherwise, the chunks
* will be left with the 'new' data that was never successfully
* written to the server, but the DV in the dcache is still the
* old DV. So, we may indefinitely serve data to applications
* that is not actually in the file on the fileserver. If we
* cannot afs_GetValidDSlot the appropriate entries, currently
* there is no way to ensure the dcache is invalidated. So for
* now, to avoid risking serving bad data from the cache, panic
* instead. */
osi_Panic("afs_InvalidateAllSegments tdc count");
}
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid))
dcListMax++;
afs_PutDCache(tdc);
}
index = afs_dvnextTbl[index];
}
dcList = osi_Alloc(dcListMax * sizeof(struct dcache *));
dcListCount = 0;
for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetValidDSlot(index);
if (!tdc) {
/* We cannot proceed after getting this error; we risk serving
* incorrect data to applications. So panic instead. See the
* above comment next to the previous afs_GetValidDSlot call
* for details. */
osi_Panic("afs_InvalidateAllSegments tdc store");
}
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid)) {
/* same file? we'll zap it */
if (afs_indexFlags[index] & IFDataMod) {
afs_stats_cmperf.cacheCurrDirtyChunks--;
/* don't write it back */
afs_indexFlags[index] &= ~IFDataMod;
}
afs_indexFlags[index] &= ~IFAnyPages;
if (dcListCount < dcListMax)
dcList[dcListCount++] = tdc;
else
afs_PutDCache(tdc);
} else {
afs_PutDCache(tdc);
}
}
index = afs_dvnextTbl[index];
}
ReleaseWriteLock(&afs_xdcache);
for (i = 0; i < dcListCount; i++) {
tdc = dcList[i];
ObtainWriteLock(&tdc->lock, 679);
ZapDCE(tdc);
if (vType(avc) == VDIR)
DZap(tdc);
ReleaseWriteLock(&tdc->lock);
afs_PutDCache(tdc);
}
osi_Free(dcList, dcListMax * sizeof(struct dcache *));
return 0;
}
static long
CallSimultaneously(u_int threads, opaque rock, long (*proc)(int, opaque))
{
long code;
int i;
#ifdef AFS_PTHREAD_ENV
pthread_once(&workerOnce, WorkerInit);
#endif
workers = 0;
for (i = 0; i < threads; i++) {
struct worker *w;
#ifdef AFS_PTHREAD_ENV
pthread_t pid;
#else
PROCESS pid;
#endif
assert(i < MAX_CTHREADS);
w = (struct worker *)osi_Alloc(sizeof(struct worker));
memset(w, 0, sizeof(*w));
w->next = workers;
workers = w;
w->index = i;
w->exitCode = RXKST_PROCESSRUNNING;
w->rock = rock;
w->proc = proc;
#ifdef AFS_PTHREAD_ENV
{
pthread_attr_t tattr;
code = pthread_attr_init(&tattr);
if (code) {
afs_com_err(whoami, code,
"can't pthread_attr_init worker process");
return code;
}
code =
pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
if (code) {
afs_com_err(whoami, code,
"can't pthread_attr_setdetachstate worker process");
return code;
}
code = pthread_create(&pid, &tattr, DoWorker, (void *)w);
}
#else
code =
LWP_CreateProcess(DoWorker, 16000, LWP_NORMAL_PRIORITY,
(opaque) w, "Worker Process", &pid);
#endif
if (code) {
afs_com_err(whoami, code, "can't create worker process");
return code;
}
}
code = 0; /* last non-zero code encountered */
#ifdef AFS_PTHREAD_ENV
pthread_mutex_lock(&workerLock);
#endif
while (workers) {
struct worker *w, *prevW, *nextW;
prevW = 0;
for (w = workers; w; w = nextW) {
nextW = w->next;
if (w->exitCode != RXKST_PROCESSRUNNING) {
if (w->exitCode) {
if (code == 0)
code = w->exitCode;
}
if (prevW)
prevW->next = w->next;
else
workers = w->next;
osi_Free(w, sizeof(*w));
continue; /* don't bump prevW */
}
prevW = w;
}
#ifdef AFS_PTHREAD_ENV
if (workers)
pthread_cond_wait(&workerCV, &workerLock);
#else
if (workers)
LWP_WaitProcess(&workers);
#endif
}
#ifdef AFS_PTHREAD_ENV
pthread_mutex_unlock(&workerLock);
#endif
return code;
}
int
afs_InvalidateAllSegments(struct vcache *avc)
{
struct dcache *tdc;
afs_int32 hash;
afs_int32 index;
struct dcache **dcList;
int i, dcListMax, dcListCount;
AFS_STATCNT(afs_InvalidateAllSegments);
afs_Trace2(afs_iclSetp, CM_TRACE_INVALL, ICL_TYPE_POINTER, avc,
ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
hash = DVHash(&avc->f.fid);
avc->f.truncPos = AFS_NOTRUNC; /* don't truncate later */
avc->f.states &= ~CExtendedFile; /* not any more */
ObtainWriteLock(&afs_xcbhash, 459);
afs_DequeueCallback(avc);
avc->f.states &= ~(CStatd | CDirty); /* mark status information as bad, too */
ReleaseWriteLock(&afs_xcbhash);
if (avc->f.fid.Fid.Vnode & 1 || (vType(avc) == VDIR))
osi_dnlc_purgedp(avc);
/* Blow away pages; for now, only for Solaris */
#if (defined(AFS_SUN5_ENV))
if (WriteLocked(&avc->lock))
osi_ReleaseVM(avc, (afs_ucred_t *)0);
#endif
/*
* Block out others from screwing with this table; is a read lock
* sufficient?
*/
ObtainWriteLock(&afs_xdcache, 286);
dcListMax = 0;
for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetDSlot(index, 0);
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid))
dcListMax++;
afs_PutDCache(tdc);
}
index = afs_dvnextTbl[index];
}
dcList = osi_Alloc(dcListMax * sizeof(struct dcache *));
dcListCount = 0;
for (index = afs_dvhashTbl[hash]; index != NULLIDX;) {
if (afs_indexUnique[index] == avc->f.fid.Fid.Unique) {
tdc = afs_GetDSlot(index, 0);
ReleaseReadLock(&tdc->tlock);
if (!FidCmp(&tdc->f.fid, &avc->f.fid)) {
/* same file? we'll zap it */
if (afs_indexFlags[index] & IFDataMod) {
afs_stats_cmperf.cacheCurrDirtyChunks--;
/* don't write it back */
afs_indexFlags[index] &= ~IFDataMod;
}
afs_indexFlags[index] &= ~IFAnyPages;
if (dcListCount < dcListMax)
dcList[dcListCount++] = tdc;
else
afs_PutDCache(tdc);
} else {
afs_PutDCache(tdc);
}
}
index = afs_dvnextTbl[index];
}
ReleaseWriteLock(&afs_xdcache);
for (i = 0; i < dcListCount; i++) {
tdc = dcList[i];
ObtainWriteLock(&tdc->lock, 679);
ZapDCE(tdc);
if (vType(avc) == VDIR)
DZap(tdc);
ReleaseWriteLock(&tdc->lock);
afs_PutDCache(tdc);
}
osi_Free(dcList, dcListMax * sizeof(struct dcache *));
return 0;
}
static int
extractPioctlToken(struct tokenJar *token,
struct token_opaque *opaque) {
XDR xdrs;
struct ktc_tokenUnion *pioctlToken;
int code;
memset(opaque, 0, sizeof(token_opaque));
pioctlToken = osi_Alloc(sizeof(struct ktc_tokenUnion));
if (pioctlToken == NULL)
return ENOMEM;
pioctlToken->at_type = token->type;
switch (token->type) {
case RX_SECIDX_KAD:
code = rxkad_extractTokenForPioctl(token, pioctlToken);
break;
default:
code = EINVAL;;
}
if (code)
goto out;
xdrlen_create(&xdrs);
if (!xdr_ktc_tokenUnion(&xdrs, pioctlToken)) {
code = EINVAL;
xdr_destroy(&xdrs);
goto out;
}
opaque->token_opaque_len = xdr_getpos(&xdrs);
xdr_destroy(&xdrs);
opaque->token_opaque_val = osi_Alloc(opaque->token_opaque_len);
if (opaque->token_opaque_val == NULL) {
code = ENOMEM;
goto out;
}
xdrmem_create(&xdrs,
opaque->token_opaque_val,
opaque->token_opaque_len,
XDR_ENCODE);
if (!xdr_ktc_tokenUnion(&xdrs, pioctlToken)) {
code = EINVAL;
xdr_destroy(&xdrs);
goto out;
}
xdr_destroy(&xdrs);
out:
xdr_free((xdrproc_t) xdr_ktc_tokenUnion, &pioctlToken);
osi_Free(pioctlToken, sizeof(struct ktc_tokenUnion));
if (code != 0) {
osi_Free(opaque->token_opaque_val, opaque->token_opaque_len);
opaque->token_opaque_val = NULL;
opaque->token_opaque_len = 0;
}
return code;
}
/* called with the GLOCK held */
int
afs_syscall_pioctl(char *path, unsigned int com, caddr_t cmarg, int follow)
{
cred_t *credp = crref(); /* don't free until done! */
struct afs_ioctl data;
struct clientcred ccred;
struct rmtbulk idata, odata;
short in_size, out_size;
afs_int32 code = 0, pag, err;
gid_t g0, g1;
char *abspath, *pathbuf = 0;
AFS_STATCNT(afs_syscall_pioctl);
if (follow)
follow = 1; /* compat. with old venus */
code = copyin_afs_ioctl(cmarg, &data);
if (code) goto out;
if ((com & 0xff) == 90) {
/* PSetClientContext, in any space */
code = EINVAL;
goto out;
}
/* Special handling for a few pioctls */
switch (com & 0xffff) {
case (0x5600 | 3): /* VIOCSETTOK */
code = afspag_PSetTokens(data.in, data.in_size, &credp);
if (code) goto out;
break;
case (0x5600 | 9): /* VIOCUNLOG */
case (0x5600 | 21): /* VIOCUNPAG */
code = afspag_PUnlog(data.in, data.in_size, &credp);
if (code) goto out;
break;
case (0x5600 | 38): /* VIOC_AFS_SYSNAME */
code = afspag_PSetSysName(data.in, data.in_size, &credp);
if (code) goto out;
break;
}
/* Set up credentials */
memset(&ccred, 0, sizeof(ccred));
pag = PagInCred(credp);
ccred.uid = afs_cr_uid(credp);
if (pag != NOPAG) {
afs_get_groups_from_pag(pag, &g0, &g1);
ccred.group0 = g0;
ccred.group1 = g1;
}
/*
* Copy the path and convert to absolute, if one was given.
* NB: We can only use osI_AllocLargeSpace here as long as
* RMTSYS_MAXPATHLEN is less than AFS_LRALLOCSIZ.
*/
if (path) {
pathbuf = osi_AllocLargeSpace(RMTSYS_MAXPATHLEN);
if (!pathbuf) {
code = ENOMEM;
goto out;
}
code = osi_abspath(path, pathbuf, RMTSYS_MAXPATHLEN, 0, &abspath);
if (code)
goto out_path;
} else {
abspath = NIL_PATHP;
}
/* Allocate, copy, and convert incoming data */
idata.rmtbulk_len = in_size = data.in_size;
if (in_size < 0 || in_size > MAXBUFFERLEN) {
code = EINVAL;
goto out_path;
}
if (in_size > AFS_LRALLOCSIZ)
idata.rmtbulk_val = osi_Alloc(in_size);
else
idata.rmtbulk_val = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
if (!idata.rmtbulk_val) {
code = ENOMEM;
goto out_path;
}
if (in_size) {
AFS_COPYIN(data.in, idata.rmtbulk_val, in_size, code);
if (code)
goto out_idata;
inparam_conversion(com, idata.rmtbulk_val, in_size, 0);
}
/* Allocate space for outgoing data */
odata.rmtbulk_len = out_size = data.out_size;
if (out_size < 0 || out_size > MAXBUFFERLEN) {
code = EINVAL;
goto out_idata;
}
if (out_size > AFS_LRALLOCSIZ)
odata.rmtbulk_val = osi_Alloc(out_size);
else
odata.rmtbulk_val = osi_AllocLargeSpace(AFS_LRALLOCSIZ);
if (!odata.rmtbulk_val) {
code = ENOMEM;
goto out_idata;
}
AFS_GUNLOCK();
code = RMTSYS_Pioctl(rmtsys_conn, &ccred, abspath, com, follow,
&idata, &odata, &err);
AFS_GLOCK();
if (code)
goto out_odata;
/* Convert and copy out the result */
if (odata.rmtbulk_len > out_size) {
code = E2BIG;
goto out_odata;
}
if (odata.rmtbulk_len) {
outparam_conversion(com, odata.rmtbulk_val, odata.rmtbulk_len, 1);
AFS_COPYOUT(odata.rmtbulk_val, data.out, odata.rmtbulk_len, code);
}
if (!code)
code = err;
out_odata:
if (out_size > AFS_LRALLOCSIZ)
osi_Free(odata.rmtbulk_val, out_size);
else
osi_FreeLargeSpace(odata.rmtbulk_val);
out_idata:
if (in_size > AFS_LRALLOCSIZ)
osi_Free(idata.rmtbulk_val, in_size);
else
osi_FreeLargeSpace(idata.rmtbulk_val);
out_path:
if (path)
osi_FreeLargeSpace(pathbuf);
out:
crfree(credp);
#if defined(KERNEL_HAVE_UERROR)
if (!getuerror())
setuerror(code);
return (getuerror());
#else
return (code);
#endif
}
