void
osi_PostPopulateVCache(struct vcache *avc) {
AFSTOV(avc)->v_mount = afs_globalVFS;
vSetType(avc, VREG);
}
/**
* Reset volume name to volume id mapping cache.
* @param flags
*/
void
afs_CheckVolumeNames(int flags)
{
afs_int32 i, j;
struct volume *tv;
unsigned int now;
struct vcache *tvc;
afs_int32 *volumeID, *cellID, vsize, nvols;
#ifdef AFS_DARWIN80_ENV
vnode_t tvp;
#endif
AFS_STATCNT(afs_CheckVolumeNames);
nvols = 0;
volumeID = cellID = NULL;
vsize = 0;
ObtainReadLock(&afs_xvolume);
if (flags & AFS_VOLCHECK_EXPIRED) {
/*
* allocate space to hold the volumeIDs and cellIDs, only if
* we will be invalidating the mountpoints later on
*/
for (i = 0; i < NVOLS; i++)
for (tv = afs_volumes[i]; tv; tv = tv->next)
++vsize;
volumeID = (afs_int32 *) afs_osi_Alloc(2 * vsize * sizeof(*volumeID));
cellID = (volumeID) ? volumeID + vsize : 0;
}
now = osi_Time();
for (i = 0; i < NVOLS; i++) {
for (tv = afs_volumes[i]; tv; tv = tv->next) {
if (flags & AFS_VOLCHECK_EXPIRED) {
if (((tv->expireTime < (now + 10)) && (tv->states & VRO))
|| (flags & AFS_VOLCHECK_FORCE)) {
afs_ResetVolumeInfo(tv); /* also resets status */
if (volumeID) {
volumeID[nvols] = tv->volume;
cellID[nvols] = tv->cell;
}
++nvols;
continue;
}
}
/* ??? */
if (flags & (AFS_VOLCHECK_BUSY | AFS_VOLCHECK_FORCE)) {
for (j = 0; j < AFS_MAXHOSTS; j++)
tv->status[j] = not_busy;
}
}
}
ReleaseReadLock(&afs_xvolume);
/* next ensure all mt points are re-evaluated */
if (nvols || (flags & (AFS_VOLCHECK_FORCE | AFS_VOLCHECK_MTPTS))) {
loop:
ObtainReadLock(&afs_xvcache);
for (i = 0; i < VCSIZE; i++) {
for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
/* if the volume of "mvid" of the vcache entry is among the
* ones we found earlier, then we re-evaluate it. Also, if the
* force bit is set or we explicitly asked to reevaluate the
* mt-pts, we clean the cmvalid bit */
if ((flags & (AFS_VOLCHECK_FORCE | AFS_VOLCHECK_MTPTS))
|| (tvc->mvid
&& inVolList(tvc->mvid, nvols, volumeID, cellID)))
tvc->f.states &= ~CMValid;
/* If the volume that this file belongs to was reset earlier,
* then we should remove its callback.
* Again, if forced, always do it.
*/
if ((tvc->f.states & CRO)
&& (inVolList(&tvc->f.fid, nvols, volumeID, cellID)
|| (flags & AFS_VOLCHECK_FORCE))) {
if (tvc->f.states & CVInit) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop;
}
#ifdef AFS_DARWIN80_ENV
if (tvc->f.states & CDeadVnode) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop;
}
tvp = AFSTOV(tvc);
if (vnode_get(tvp))
continue;
if (vnode_ref(tvp)) {
AFS_GUNLOCK();
/* AFSTOV(tvc) may be NULL */
vnode_put(tvp);
AFS_GLOCK();
continue;
}
#else
AFS_FAST_HOLD(tvc);
#endif
ReleaseReadLock(&afs_xvcache);
ObtainWriteLock(&afs_xcbhash, 485);
/* LOCKXXX: We aren't holding tvc write lock? */
afs_DequeueCallback(tvc);
tvc->f.states &= ~CStatd;
ReleaseWriteLock(&afs_xcbhash);
if (tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR))
osi_dnlc_purgedp(tvc);
#ifdef AFS_DARWIN80_ENV
vnode_put(AFSTOV(tvc));
/* our tvc ptr is still good until now */
AFS_FAST_RELE(tvc);
ObtainReadLock(&afs_xvcache);
#else
ObtainReadLock(&afs_xvcache);
/* our tvc ptr is still good until now */
AFS_FAST_RELE(tvc);
#endif
}
}
}
osi_dnlc_purge(); /* definitely overkill, but it's safer this way. */
ReleaseReadLock(&afs_xvcache);
}
if (volumeID)
afs_osi_Free(volumeID, 2 * vsize * sizeof(*volumeID));
} /*afs_CheckVolumeNames */
/* Purge pages beyond end-of-file, when truncating a file.
*
* Locking: no lock is held, not even the global lock.
* activeV is raised. This is supposed to block pageins, but at present
* it only works on Solaris.
*/
void
osi_VM_Truncate(struct vcache *avc, int alen, afs_ucred_t *acred)
{
vnode_pager_setsize(AFSTOV(avc), alen);
}
int
afs_CheckRootVolume(void)
{
char rootVolName[32];
struct volume *tvp = NULL;
int usingDynroot = afs_GetDynrootEnable();
int localcell;
AFS_STATCNT(afs_CheckRootVolume);
if (*afs_rootVolumeName == 0) {
strcpy(rootVolName, "root.afs");
} else {
strcpy(rootVolName, afs_rootVolumeName);
}
if (usingDynroot) {
afs_GetDynrootFid(&afs_rootFid);
tvp = afs_GetVolume(&afs_rootFid, NULL, READ_LOCK);
} else {
struct cell *lc = afs_GetPrimaryCell(READ_LOCK);
if (!lc)
return ENOENT;
localcell = lc->cellNum;
afs_PutCell(lc, READ_LOCK);
tvp = afs_GetVolumeByName(rootVolName, localcell, 1, NULL, READ_LOCK);
if (!tvp) {
char buf[128];
int len = strlen(rootVolName);
if ((len < 9) || strcmp(&rootVolName[len - 9], ".readonly")) {
strcpy(buf, rootVolName);
afs_strcat(buf, ".readonly");
tvp = afs_GetVolumeByName(buf, localcell, 1, NULL, READ_LOCK);
}
}
if (tvp) {
int volid = (tvp->roVol ? tvp->roVol : tvp->volume);
afs_rootFid.Cell = localcell;
if (afs_rootFid.Fid.Volume && afs_rootFid.Fid.Volume != volid
&& afs_globalVp) {
/* If we had a root fid before and it changed location we reset
* the afs_globalVp so that it will be reevaluated.
* Just decrement the reference count. This only occurs during
* initial cell setup and can panic the machine if we set the
* count to zero and fs checkv is executed when the current
* directory is /afs.
*/
#ifdef AFS_LINUX20_ENV
{
struct vrequest treq;
struct vattr vattr;
cred_t *credp;
struct dentry *dp;
struct vcache *vcp;
afs_rootFid.Fid.Volume = volid;
afs_rootFid.Fid.Vnode = 1;
afs_rootFid.Fid.Unique = 1;
credp = crref();
if (afs_InitReq(&treq, credp))
goto out;
vcp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
if (!vcp)
goto out;
afs_getattr(vcp, &vattr, credp);
afs_fill_inode(AFSTOV(vcp), &vattr);
dp = d_find_alias(AFSTOV(afs_globalVp));
#if defined(AFS_LINUX24_ENV)
#if defined(HAVE_DCACHE_LOCK)
spin_lock(&dcache_lock);
#else
spin_lock(&AFSTOV(vcp)->i_lock);
#endif
#if defined(AFS_LINUX26_ENV)
spin_lock(&dp->d_lock);
#endif
#endif
list_del_init(&dp->d_alias);
list_add(&dp->d_alias, &(AFSTOV(vcp)->i_dentry));
dp->d_inode = AFSTOV(vcp);
#if defined(AFS_LINUX24_ENV)
#if defined(AFS_LINUX26_ENV)
spin_unlock(&dp->d_lock);
#endif
#if defined(HAVE_DCACHE_LOCK)
spin_unlock(&dcache_lock);
#else
spin_unlock(&AFSTOV(vcp)->i_lock);
#endif
#endif
dput(dp);
AFS_FAST_RELE(afs_globalVp);
afs_globalVp = vcp;
out:
crfree(credp);
}
#else
#ifdef AFS_DARWIN80_ENV
afs_PutVCache(afs_globalVp);
#else
AFS_FAST_RELE(afs_globalVp);
#endif
afs_globalVp = 0;
#endif
}
afs_rootFid.Fid.Volume = volid;
afs_rootFid.Fid.Vnode = 1;
afs_rootFid.Fid.Unique = 1;
}
}
if (tvp) {
afs_initState = 300; /* won */
afs_osi_Wakeup(&afs_initState);
afs_PutVolume(tvp, READ_LOCK);
}
if (afs_rootFid.Fid.Volume)
return 0;
else
return ENOENT;
}
/* works like PFlushVolumeData */
void
darwin_notify_perms(struct unixuser *auser, int event)
{
int i;
struct afs_q *tq, *uq = NULL;
struct vcache *tvc, *hnext;
int isglock = ISAFS_GLOCK();
struct vnode *vp;
struct vnode_attr va;
int isctxtowner = 0;
if (!afs_darwin_fsevents)
return;
VATTR_INIT(&va);
VATTR_SET(&va, va_mode, 0777);
if (event & UTokensObtained)
VATTR_SET(&va, va_uid, auser->uid);
else
VATTR_SET(&va, va_uid, -2); /* nobody */
if (!isglock)
AFS_GLOCK();
if (!(vfs_context_owner == current_thread())) {
get_vfs_context();
isctxtowner = 1;
}
loop:
ObtainReadLock(&afs_xvcache);
for (i = 0; i < VCSIZE; i++) {
for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
uq = QPrev(tq);
tvc = QTOVH(tq);
if (tvc->f.states & CDeadVnode) {
/* we can afford to be best-effort */
continue;
}
/* no per-file acls, so only notify on directories */
if (!(vp = AFSTOV(tvc)) || !vnode_isdir(AFSTOV(tvc)))
continue;
/* dynroot object. no callbacks. anonymous ACL. just no. */
if (afs_IsDynrootFid(&tvc->f.fid))
continue;
/* no fake fsevents on mount point sources. leaks refs */
if (tvc->mvstat == 1)
continue;
/* if it's being reclaimed, just pass */
if (vnode_get(vp))
continue;
if (vnode_ref(vp)) {
AFS_GUNLOCK();
vnode_put(vp);
AFS_GLOCK();
continue;
}
ReleaseReadLock(&afs_xvcache);
/* Avoid potentially re-entering on this lock */
if (0 == NBObtainWriteLock(&tvc->lock, 234)) {
tvc->f.states |= CEvent;
AFS_GUNLOCK();
vnode_setattr(vp, &va, afs_osi_ctxtp);
tvc->f.states &= ~CEvent;
vnode_put(vp);
AFS_GLOCK();
ReleaseWriteLock(&tvc->lock);
}
ObtainReadLock(&afs_xvcache);
uq = QPrev(tq);
/* our tvc ptr is still good until now */
AFS_FAST_RELE(tvc);
}
}
ReleaseReadLock(&afs_xvcache);
if (isctxtowner)
put_vfs_context();
if (!isglock)
AFS_GUNLOCK();
}
/* Try to invalidate pages, for "fs flush" or "fs flushv"; or
* try to free pages, when deleting a file.
*
* Locking: the vcache entry's lock is held. It may be dropped and
* re-obtained.
*
* Since we drop and re-obtain the lock, we can't guarantee that there won't
* be some pages around when we return, newly created by concurrent activity.
*/
void
osi_VM_TryToSmush(struct vcache *avc, afs_ucred_t *acred, int sync)
{
struct vnode *vp;
int tries, code;
int islocked;
SPLVAR;
vp = AFSTOV(avc);
VI_LOCK(vp);
if (vp->v_iflag & VI_DOOMED) {
VI_UNLOCK(vp);
USERPRI;
return;
}
VI_UNLOCK(vp);
islocked = VOP_ISLOCKED(vp);
if (islocked == LK_EXCLOTHER)
panic("Trying to Smush over someone else's lock");
else if (islocked == LK_SHARED) {
afs_warn("Trying to Smush with a shared lock");
vn_lock(vp, LK_UPGRADE);
} else if (!islocked)
vn_lock(vp, LK_EXCLUSIVE);
if (vp->v_bufobj.bo_object != NULL) {
VM_OBJECT_LOCK(vp->v_bufobj.bo_object);
/*
* Do we really want OBJPC_SYNC? OBJPC_INVAL would be
* faster, if invalidation is really what we are being
* asked to do. (It would make more sense, too, since
* otherwise this function is practically identical to
* osi_VM_StoreAllSegments().) -GAW
*/
/*
* Dunno. We no longer resemble osi_VM_StoreAllSegments,
* though maybe that's wrong, now. And OBJPC_SYNC is the
* common thing in 70 file systems, it seems. Matt.
*/
vm_object_page_clean(vp->v_bufobj.bo_object, 0, 0, OBJPC_SYNC);
VM_OBJECT_UNLOCK(vp->v_bufobj.bo_object);
}
tries = 5;
code = osi_vinvalbuf(vp, V_SAVE, PCATCH, 0);
while (code && (tries > 0)) {
afs_warn("TryToSmush retrying vinvalbuf");
code = osi_vinvalbuf(vp, V_SAVE, PCATCH, 0);
--tries;
}
if (islocked == LK_SHARED)
vn_lock(vp, LK_DOWNGRADE);
else if (!islocked)
VOP_UNLOCK(vp, 0);
USERPRI;
}
afs_root(struct mount *mp, struct vnode **vpp)
#endif
{
int error;
struct vrequest treq;
struct vcache *tvp = 0;
struct vcache *gvp;
#if !defined(AFS_FBSD53_ENV) || defined(AFS_FBSD80_ENV)
struct thread *td = curthread;
#endif
struct ucred *cr = osi_curcred();
AFS_GLOCK();
AFS_STATCNT(afs_root);
crhold(cr);
tryagain:
if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
tvp = afs_globalVp;
error = 0;
} else {
if (!(error = afs_InitReq(&treq, cr)) && !(error = afs_CheckInit())) {
tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
/* we really want this to stay around */
if (tvp) {
gvp = afs_globalVp;
afs_globalVp = tvp;
if (gvp) {
afs_PutVCache(gvp);
if (tvp != afs_globalVp) {
/* someone raced us and won */
afs_PutVCache(tvp);
goto tryagain;
}
}
} else
error = ENOENT;
}
}
if (tvp) {
struct vnode *vp = AFSTOV(tvp);
ASSERT_VI_UNLOCKED(vp, "afs_root");
AFS_GUNLOCK();
error = vget(vp, LK_EXCLUSIVE | LK_RETRY, td);
AFS_GLOCK();
/* we dropped the glock, so re-check everything it had serialized */
if (!afs_globalVp || !(afs_globalVp->f.states & CStatd) ||
tvp != afs_globalVp) {
vput(vp);
afs_PutVCache(tvp);
goto tryagain;
}
if (error != 0)
goto tryagain;
/*
* I'm uncomfortable about this. Shouldn't this happen at a
* higher level, and shouldn't we busy the top-level directory
* to prevent recycling?
*/
vp->v_vflag |= VV_ROOT;
afs_globalVFS = mp;
*vpp = vp;
}
afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, tvp ? AFSTOV(tvp) : NULL,
ICL_TYPE_INT32, error);
AFS_GUNLOCK();
crfree(cr);
return error;
}
/* question: does afs_create need to set CDirty in the adp or the avc?
* I think we can get away without it, but I'm not sure. Note that
* afs_setattr is called in here for truncation.
*/
#ifdef AFS_SGI64_ENV
int
afs_create(OSI_VC_DECL(adp), char *aname, struct vattr *attrs, int flags,
int amode, struct vcache **avcp, afs_ucred_t *acred)
#else /* AFS_SGI64_ENV */
int
afs_create(OSI_VC_DECL(adp), char *aname, struct vattr *attrs,
enum vcexcl aexcl, int amode, struct vcache **avcp,
afs_ucred_t *acred)
#endif /* AFS_SGI64_ENV */
{
afs_int32 origCBs, origZaps, finalZaps;
struct vrequest treq;
afs_int32 code;
struct afs_conn *tc;
struct VenusFid newFid;
struct AFSStoreStatus InStatus;
struct AFSFetchStatus OutFidStatus, OutDirStatus;
struct AFSVolSync tsync;
struct AFSCallBack CallBack;
afs_int32 now;
struct dcache *tdc;
afs_size_t offset, len;
struct server *hostp = 0;
struct vcache *tvc;
struct volume *volp = 0;
struct afs_fakestat_state fakestate;
struct rx_connection *rxconn;
XSTATS_DECLS;
OSI_VC_CONVERT(adp);
AFS_STATCNT(afs_create);
if ((code = afs_InitReq(&treq, acred)))
goto done2;
afs_Trace3(afs_iclSetp, CM_TRACE_CREATE, ICL_TYPE_POINTER, adp,
ICL_TYPE_STRING, aname, ICL_TYPE_INT32, amode);
afs_InitFakeStat(&fakestate);
#ifdef AFS_SGI65_ENV
/* If avcp is passed not null, it's the old reference to this file.
* We can use this to avoid create races. For now, just decrement
* the reference count on it.
*/
if (*avcp) {
AFS_RELE(AFSTOV(*avcp));
*avcp = NULL;
}
#endif
if (strlen(aname) > AFSNAMEMAX) {
code = ENAMETOOLONG;
goto done3;
}
if (!afs_ENameOK(aname)) {
code = EINVAL;
goto done3;
}
switch (attrs->va_type) {
case VBLK:
case VCHR:
#if !defined(AFS_SUN5_ENV)
case VSOCK:
#endif
case VFIFO:
/* We don't support special devices or FIFOs */
code = EINVAL;
goto done3;
default:
;
}
AFS_DISCON_LOCK();
code = afs_EvalFakeStat(&adp, &fakestate, &treq);
if (code)
goto done;
tagain:
code = afs_VerifyVCache(adp, &treq);
if (code)
goto done;
/** If the volume is read-only, return error without making an RPC to the
* fileserver
*/
if (adp->f.states & CRO) {
code = EROFS;
goto done;
}
if (AFS_IS_DISCONNECTED && !AFS_IS_DISCON_RW) {
code = ENETDOWN;
goto done;
}
tdc = afs_GetDCache(adp, (afs_size_t) 0, &treq, &offset, &len, 1);
ObtainWriteLock(&adp->lock, 135);
if (tdc)
ObtainSharedLock(&tdc->lock, 630);
/*
* Make sure that the data in the cache is current. We may have
* received a callback while we were waiting for the write lock.
*/
if (!(adp->f.states & CStatd)
|| (tdc && !hsame(adp->f.m.DataVersion, tdc->f.versionNo))) {
ReleaseWriteLock(&adp->lock);
if (tdc) {
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
}
goto tagain;
}
if (tdc) {
/* see if file already exists. If it does, we only set
* the size attributes (to handle O_TRUNC) */
code = afs_dir_Lookup(tdc, aname, &newFid.Fid); /* use dnlc first xxx */
if (code == 0) {
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
ReleaseWriteLock(&adp->lock);
#ifdef AFS_SGI64_ENV
if (flags & VEXCL) {
#else
if (aexcl != NONEXCL) {
#endif
code = EEXIST; /* file exists in excl mode open */
goto done;
}
/* found the file, so use it */
newFid.Cell = adp->f.fid.Cell;
newFid.Fid.Volume = adp->f.fid.Fid.Volume;
tvc = NULL;
if (newFid.Fid.Unique == 0) {
tvc = afs_LookupVCache(&newFid, &treq, NULL, adp, aname);
}
if (!tvc) /* lookup failed or wasn't called */
tvc = afs_GetVCache(&newFid, &treq, NULL, NULL);
if (tvc) {
/* if the thing exists, we need the right access to open it.
* we must check that here, since no other checks are
* made by the open system call */
len = attrs->va_size; /* only do the truncate */
/*
* We used to check always for READ access before; the
* problem is that we will fail if the existing file
* has mode -w-w-w, which is wrong.
*/
if ((amode & VREAD)
&& !afs_AccessOK(tvc, PRSFS_READ, &treq, CHECK_MODE_BITS)) {
afs_PutVCache(tvc);
code = EACCES;
goto done;
}
#if defined(AFS_DARWIN80_ENV)
if ((amode & VWRITE) || VATTR_IS_ACTIVE(attrs, va_data_size))
#elif defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
if ((amode & VWRITE) || (attrs->va_mask & AT_SIZE))
#else
if ((amode & VWRITE) || len != 0xffffffff)
#endif
{
/* needed for write access check */
tvc->f.parent.vnode = adp->f.fid.Fid.Vnode;
tvc->f.parent.unique = adp->f.fid.Fid.Unique;
/* need write mode for these guys */
if (!afs_AccessOK
(tvc, PRSFS_WRITE, &treq, CHECK_MODE_BITS)) {
afs_PutVCache(tvc);
code = EACCES;
goto done;
}
}
#if defined(AFS_DARWIN80_ENV)
if (VATTR_IS_ACTIVE(attrs, va_data_size))
#elif defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
if (attrs->va_mask & AT_SIZE)
#else
if (len != 0xffffffff)
#endif
{
if (vType(tvc) != VREG) {
afs_PutVCache(tvc);
code = EISDIR;
goto done;
}
/* do a truncate */
#if defined(AFS_DARWIN80_ENV)
VATTR_INIT(attrs);
VATTR_SET_SUPPORTED(attrs, va_data_size);
VATTR_SET_ACTIVE(attrs, va_data_size);
#elif defined(UKERNEL)
attrs->va_mask = ATTR_SIZE;
#elif defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
attrs->va_mask = AT_SIZE;
#else
VATTR_NULL(attrs);
#endif
attrs->va_size = len;
ObtainWriteLock(&tvc->lock, 136);
tvc->f.states |= CCreating;
ReleaseWriteLock(&tvc->lock);
#if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
#if defined(AFS_SGI64_ENV)
code =
afs_setattr(VNODE_TO_FIRST_BHV((vnode_t *) tvc),
attrs, 0, acred);
#else
code = afs_setattr(tvc, attrs, 0, acred);
#endif /* AFS_SGI64_ENV */
#else /* SUN5 || SGI */
code = afs_setattr(tvc, attrs, acred);
#endif /* SUN5 || SGI */
ObtainWriteLock(&tvc->lock, 137);
tvc->f.states &= ~CCreating;
ReleaseWriteLock(&tvc->lock);
if (code) {
afs_PutVCache(tvc);
goto done;
}
}
*avcp = tvc;
} else
code = ENOENT; /* shouldn't get here */
/* make sure vrefCount bumped only if code == 0 */
goto done;
}
}
/* if we create the file, we don't do any access checks, since
* that's how O_CREAT is supposed to work */
if (adp->f.states & CForeign) {
origCBs = afs_allCBs;
origZaps = afs_allZaps;
} else {
origCBs = afs_evenCBs; /* if changes, we don't really have a callback */
origZaps = afs_evenZaps; /* number of even numbered vnodes discarded */
}
InStatus.Mask = AFS_SETMODTIME | AFS_SETMODE | AFS_SETGROUP;
InStatus.ClientModTime = osi_Time();
InStatus.Group = (afs_int32) afs_cr_gid(acred);
if (AFS_NFSXLATORREQ(acred)) {
/*
* XXX The following is mainly used to fix a bug in the HP-UX
* nfs client where they create files with mode of 0 without
* doing any setattr later on to fix it. * XXX
*/
#if defined(AFS_AIX_ENV)
if (attrs->va_mode != -1) {
#else
#if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
if (attrs->va_mask & AT_MODE) {
#else
if (attrs->va_mode != ((unsigned short)-1)) {
#endif
#endif
if (!attrs->va_mode)
attrs->va_mode = 0x1b6; /* XXX default mode: rw-rw-rw XXX */
}
}
if (!AFS_IS_DISCONNECTED) {
/* If not disconnected, connect to the server.*/
InStatus.UnixModeBits = attrs->va_mode & 0xffff; /* only care about protection bits */
do {
tc = afs_Conn(&adp->f.fid, &treq, SHARED_LOCK, &rxconn);
if (tc) {
hostp = tc->srvr->server; /* remember for callback processing */
now = osi_Time();
XSTATS_START_TIME(AFS_STATS_FS_RPCIDX_CREATEFILE);
RX_AFS_GUNLOCK();
code =
RXAFS_CreateFile(rxconn, (struct AFSFid *)&adp->f.fid.Fid,
aname, &InStatus, (struct AFSFid *)
&newFid.Fid, &OutFidStatus, &OutDirStatus,
&CallBack, &tsync);
RX_AFS_GLOCK();
XSTATS_END_TIME;
CallBack.ExpirationTime += now;
} else
code = -1;
} while (afs_Analyze
(tc, rxconn, code, &adp->f.fid, &treq, AFS_STATS_FS_RPCIDX_CREATEFILE,
SHARED_LOCK, NULL));
if ((code == EEXIST || code == UAEEXIST) &&
#ifdef AFS_SGI64_ENV
!(flags & VEXCL)
#else /* AFS_SGI64_ENV */
aexcl == NONEXCL
#endif
) {
/* if we get an EEXIST in nonexcl mode, just do a lookup */
if (tdc) {
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
}
ReleaseWriteLock(&adp->lock);
#if defined(AFS_SGI64_ENV)
code = afs_lookup(VNODE_TO_FIRST_BHV((vnode_t *) adp), aname, avcp,
NULL, 0, NULL, acred);
#elif defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
code = afs_lookup(adp, aname, avcp, NULL, 0, NULL, acred);
#elif defined(UKERNEL)
code = afs_lookup(adp, aname, avcp, acred, 0);
#elif !defined(AFS_DARWIN_ENV)
code = afs_lookup(adp, aname, avcp, acred);
#endif
goto done;
}
if (code) {
if (code < 0) {
ObtainWriteLock(&afs_xcbhash, 488);
afs_DequeueCallback(adp);
adp->f.states &= ~CStatd;
ReleaseWriteLock(&afs_xcbhash);
osi_dnlc_purgedp(adp);
}
ReleaseWriteLock(&adp->lock);
if (tdc) {
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
}
goto done;
}
} else {
/* Generate a fake FID for disconnected mode. */
newFid.Cell = adp->f.fid.Cell;
newFid.Fid.Volume = adp->f.fid.Fid.Volume;
afs_GenFakeFid(&newFid, VREG, 1);
} /* if (!AFS_IS_DISCON_RW) */
/* otherwise, we should see if we can make the change to the dir locally */
if (tdc)
UpgradeSToWLock(&tdc->lock, 631);
if (AFS_IS_DISCON_RW || afs_LocalHero(adp, tdc, &OutDirStatus, 1)) {
/* we can do it locally */
ObtainWriteLock(&afs_xdcache, 291);
code = afs_dir_Create(tdc, aname, &newFid.Fid);
ReleaseWriteLock(&afs_xdcache);
if (code) {
ZapDCE(tdc);
DZap(tdc);
}
}
if (tdc) {
ReleaseWriteLock(&tdc->lock);
afs_PutDCache(tdc);
}
if (AFS_IS_DISCON_RW)
adp->f.m.LinkCount++;
newFid.Cell = adp->f.fid.Cell;
newFid.Fid.Volume = adp->f.fid.Fid.Volume;
ReleaseWriteLock(&adp->lock);
volp = afs_FindVolume(&newFid, READ_LOCK);
/* New tricky optimistic callback handling algorithm for file creation works
* as follows. We create the file essentially with no locks set at all. File
* server may thus handle operations from others cache managers as well as from
* this very own cache manager that reference the file in question before
* we managed to create the cache entry. However, if anyone else changes
* any of the status information for a file, we'll see afs_evenCBs increase
* (files always have even fids). If someone on this workstation manages
* to do something to the file, they'll end up having to create a cache
* entry for the new file. Either we'll find it once we've got the afs_xvcache
* lock set, or it was also *deleted* the vnode before we got there, in which case
* we will find evenZaps has changed, too. Thus, we only assume we have the right
* status information if no callbacks or vnode removals have occurred to even
* numbered files from the time the call started until the time that we got the xvcache
* lock set. Of course, this also assumes that any call that modifies a file first
* gets a write lock on the file's vnode, but if that weren't true, the whole cache manager
* would fail, since no call would be able to update the local vnode status after modifying
* a file on a file server. */
ObtainWriteLock(&afs_xvcache, 138);
if (adp->f.states & CForeign)
finalZaps = afs_allZaps; /* do this before calling newvcache */
else
finalZaps = afs_evenZaps; /* do this before calling newvcache */
/* don't need to call RemoveVCB, since only path leaving a callback is the
* one where we pass through afs_NewVCache. Can't have queued a VCB unless
* we created and freed an entry between file creation time and here, and the
* freeing of the vnode will change evenZaps. Don't need to update the VLRU
* queue, since the find will only succeed in the event of a create race, and
* then the vcache will be at the front of the VLRU queue anyway... */
if (!(tvc = afs_FindVCache(&newFid, 0, DO_STATS))) {
tvc = afs_NewVCache(&newFid, hostp);
if (tvc) {
int finalCBs;
ObtainWriteLock(&tvc->lock, 139);
ObtainWriteLock(&afs_xcbhash, 489);
finalCBs = afs_evenCBs;
/* add the callback in */
if (adp->f.states & CForeign) {
tvc->f.states |= CForeign;
finalCBs = afs_allCBs;
}
if (origCBs == finalCBs && origZaps == finalZaps) {
tvc->f.states |= CStatd; /* we've fake entire thing, so don't stat */
tvc->f.states &= ~CBulkFetching;
if (!AFS_IS_DISCON_RW) {
tvc->cbExpires = CallBack.ExpirationTime;
afs_QueueCallback(tvc, CBHash(CallBack.ExpirationTime), volp);
}
} else {
afs_DequeueCallback(tvc);
tvc->f.states &= ~(CStatd | CUnique);
tvc->callback = 0;
if (tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR))
osi_dnlc_purgedp(tvc);
}
ReleaseWriteLock(&afs_xcbhash);
if (AFS_IS_DISCON_RW) {
afs_DisconAddDirty(tvc, VDisconCreate, 0);
afs_GenDisconStatus(adp, tvc, &newFid, attrs, &treq, VREG);
} else {
afs_ProcessFS(tvc, &OutFidStatus, &treq);
}
tvc->f.parent.vnode = adp->f.fid.Fid.Vnode;
tvc->f.parent.unique = adp->f.fid.Fid.Unique;
#if !defined(UKERNEL)
if (volp && (volp->states & VPartVisible))
tvc->f.states |= CPartVisible;
#endif
ReleaseWriteLock(&tvc->lock);
*avcp = tvc;
code = 0;
} else
code = ENOENT;
} else {
/* otherwise cache entry already exists, someone else must
* have created it. Comments used to say: "don't need write
* lock to *clear* these flags" but we should do it anyway.
* Code used to clear stat bit and callback, but I don't see
* the point -- we didn't have a create race, somebody else just
* snuck into NewVCache before we got here, probably a racing
* lookup.
*/
*avcp = tvc;
code = 0;
}
ReleaseWriteLock(&afs_xvcache);
done:
AFS_DISCON_UNLOCK();
done3:
if (volp)
afs_PutVolume(volp, READ_LOCK);
if (code == 0) {
if (afs_mariner)
afs_AddMarinerName(aname, *avcp);
/* return the new status in vattr */
afs_CopyOutAttrs(*avcp, attrs);
if (afs_mariner)
afs_MarinerLog("store$Creating", *avcp);
}
afs_PutFakeStat(&fakestate);
code = afs_CheckCode(code, &treq, 20);
done2:
return code;
}
/*
* Check to see if we can track the change locally: requires that
* we have sufficiently recent info in data cache. If so, we
* know the new DataVersion number, and place it correctly in both the
* data and stat cache entries. This routine returns 1 if we should
* do the operation locally, and 0 otherwise.
*
* This routine must be called with the stat cache entry write-locked,
* and dcache entry write-locked.
*/
int
afs_LocalHero(struct vcache *avc, struct dcache *adc,
AFSFetchStatus * astat, int aincr)
{
afs_int32 ok;
afs_hyper_t avers;
AFS_STATCNT(afs_LocalHero);
hset64(avers, astat->dataVersionHigh, astat->DataVersion);
/* avers *is* the version number now, no matter what */
if (adc) {
/* does what's in the dcache *now* match what's in the vcache *now*,
* and do we have a valid callback? if not, our local copy is not "ok" */
ok = (hsame(avc->f.m.DataVersion, adc->f.versionNo) && avc->callback
&& (avc->f.states & CStatd) && avc->cbExpires >= osi_Time());
} else {
ok = 0;
}
if (ok) {
/* check that the DV on the server is what we expect it to be */
afs_hyper_t newDV;
hset(newDV, adc->f.versionNo);
hadd32(newDV, aincr);
if (!hsame(avers, newDV)) {
ok = 0;
}
}
#if defined(AFS_SGI_ENV)
osi_Assert(avc->v.v_type == VDIR);
#endif
/* The bulk status code used the length as a sequence number. */
/* Don't update the vcache entry unless the stats are current. */
if (avc->f.states & CStatd) {
hset(avc->f.m.DataVersion, avers);
#ifdef AFS_64BIT_CLIENT
FillInt64(avc->f.m.Length, astat->Length_hi, astat->Length);
#else /* AFS_64BIT_CLIENT */
avc->f.m.Length = astat->Length;
#endif /* AFS_64BIT_CLIENT */
avc->f.m.Date = astat->ClientModTime;
}
if (ok) {
/* we've been tracking things correctly */
adc->dflags |= DFEntryMod;
adc->f.versionNo = avers;
return 1;
} else {
if (adc) {
ZapDCE(adc);
DZap(adc);
}
if (avc->f.states & CStatd) {
osi_dnlc_purgedp(avc);
}
return 0;
}
}
struct vcache *
osi_dnlc_lookup(struct vcache *adp, char *aname, int locktype)
{
struct vcache *tvc;
int LRUme;
unsigned int key, skey;
char *ts = aname;
struct nc *tnc, *tnc1 = 0;
int safety;
#ifdef AFS_DARWIN80_ENV
vnode_t tvp;
#endif
ma_critical_enter();
if (!afs_usednlc) {
ma_critical_exit();
return 0;
}
dnlcHash(ts, key); /* leaves ts pointing at the NULL */
if (ts - aname >= AFSNCNAMESIZE) {
ma_critical_exit();
return 0;
}
skey = key & (NHSIZE - 1);
TRACE(osi_dnlc_lookupT, skey);
dnlcstats.lookups++;
ObtainReadLock(&afs_xvcache);
ObtainReadLock(&afs_xdnlc);
for (tvc = NULL, tnc = nameHash[skey], safety = 0; tnc;
tnc = tnc->next, safety++) {
if ( /* (tnc->key == key) && */ (tnc->dirp == adp)
&& (!strcmp((char *)tnc->name, aname))) {
tvc = tnc->vp;
tnc1 = tnc;
break;
} else if (tnc->next == nameHash[skey]) { /* end of list */
break;
} else if (safety > NCSIZE) {
afs_warn("DNLC cycle");
dnlcstats.cycles++;
ReleaseReadLock(&afs_xdnlc);
ReleaseReadLock(&afs_xvcache);
osi_dnlc_purge();
ma_critical_exit();
return (0);
}
}
LRUme = 0; /* (tnc != nameHash[skey]); */
ReleaseReadLock(&afs_xdnlc);
if (!tvc) {
ReleaseReadLock(&afs_xvcache);
dnlcstats.misses++;
} else {
if ((tvc->f.states & CVInit)
#ifdef AFS_DARWIN80_ENV
||(tvc->f.states & CDeadVnode)
#endif
)
{
ReleaseReadLock(&afs_xvcache);
dnlcstats.misses++;
osi_dnlc_remove(adp, aname, tvc);
ma_critical_exit();
return 0;
}
#if defined(AFS_DARWIN80_ENV)
tvp = AFSTOV(tvc);
if (vnode_get(tvp)) {
ReleaseReadLock(&afs_xvcache);
dnlcstats.misses++;
osi_dnlc_remove(adp, aname, tvc);
ma_critical_exit();
return 0;
}
if (vnode_ref(tvp)) {
ReleaseReadLock(&afs_xvcache);
AFS_GUNLOCK();
vnode_put(tvp);
AFS_GLOCK();
dnlcstats.misses++;
osi_dnlc_remove(adp, aname, tvc);
ma_critical_exit();
return 0;
}
#elif defined(AFS_FBSD_ENV)
/* can't sleep in a critical section */
ma_critical_exit();
osi_vnhold(tvc, 0);
ma_critical_enter();
#else
osi_vnhold(tvc, 0);
#endif
ReleaseReadLock(&afs_xvcache);
#ifdef notdef
/*
* XX If LRUme ever is non-zero change the if statement around because
* aix's cc with optimizer on won't necessarily check things in order XX
*/
if (LRUme && (0 == NBObtainWriteLock(&afs_xdnlc))) {
/* don't block to do this */
/* tnc might have been moved during race condition, */
/* but it's always in a legit hash chain when a lock is granted,
* or else it's on the freelist so prev == NULL,
* so at worst this is redundant */
/* Now that we've got it held, and a lock on the dnlc, we
* should check to be sure that there was no race, and
* bail out if there was. */
if (tnc->prev) {
/* special case for only two elements on list - relative ordering
* doesn't change */
if (tnc->prev != tnc->next) {
/* remove from old location */
tnc->prev->next = tnc->next;
tnc->next->prev = tnc->prev;
/* insert into new location */
tnc->next = nameHash[skey];
tnc->prev = tnc->next->prev;
tnc->next->prev = tnc;
tnc->prev->next = tnc;
}
nameHash[skey] = tnc;
}
ReleaseWriteLock(&afs_xdnlc);
}
#endif
}
ma_critical_exit();
return tvc;
}
/*
* Given a FID, obtain or construct a dentry, or return an error.
* This should be called with the BKL and AFS_GLOCK held.
*/
static struct dentry *get_dentry_from_fid(cred_t *credp, struct VenusFid *afid)
{
struct vrequest *treq = NULL;
struct vcache *vcp;
struct vattr *vattr = NULL;
struct inode *ip;
struct dentry *dp;
afs_int32 code;
code = afs_CreateAttr(&vattr);
if (code) {
return ERR_PTR(-afs_CheckCode(code, NULL, 104));
}
code = afs_CreateReq(&treq, credp);
if (code) {
#ifdef OSI_EXPORT_DEBUG
printk("afs: get_dentry_from_fid(0x%08x/%d/%d.%d): afs_CreateReq: %d\n",
afid->Cell, afid->Fid.Volume, afid->Fid.Vnode, afid->Fid.Unique,
code);
#endif
afs_DestroyAttr(vattr);
return ERR_PTR(-afs_CheckCode(code, NULL, 101));
}
vcp = afs_GetVCache(afid, treq, NULL, NULL);
if (vcp == NULL) {
#ifdef OSI_EXPORT_DEBUG
printk("afs: get_dentry_from_fid(0x%08x/%d/%d.%d): no vcache\n",
afid->Cell, afid->Fid.Volume, afid->Fid.Vnode, afid->Fid.Unique);
#endif
afs_DestroyReq(treq);
afs_DestroyAttr(vattr);
return NULL;
}
/*
* Now, it might be that we just caused a directory vnode to
* spring into existence, in which case its parent FID is unset.
* We need to do something about that, but only because we care
* in our own get_parent(), below -- the common code never looks
* at parentVnode on directories, except for VIOCGETVCXSTATUS.
* So, if this fails, we don't really care very much.
*/
if (vType(vcp) == VDIR && vcp->mvstat != AFS_MVSTAT_ROOT && !vcp->f.parent.vnode)
update_dir_parent(treq, vcp);
/*
* If this is a volume root directory and fakestat is enabled,
* we might need to replace the directory by a mount point.
*/
code = UnEvalFakeStat(treq, &vcp);
if (code) {
#ifdef OSI_EXPORT_DEBUG
printk("afs: get_dentry_from_fid(0x%08x/%d/%d.%d): UnEvalFakeStat: %d\n",
afid->Cell, afid->Fid.Volume, afid->Fid.Vnode, afid->Fid.Unique,
code);
#endif
afs_PutVCache(vcp);
code = afs_CheckCode(code, treq, 103);
afs_DestroyReq(treq);
afs_DestroyAttr(vattr);
return ERR_PTR(-code);
}
ip = AFSTOV(vcp);
afs_getattr(vcp, vattr, credp);
afs_fill_inode(ip, vattr);
/* d_alloc_anon might block, so we shouldn't hold the glock */
AFS_GUNLOCK();
dp = d_alloc_anon(ip);
AFS_GLOCK();
if (!dp) {
iput(ip);
#ifdef OSI_EXPORT_DEBUG
printk("afs: get_dentry_from_fid(0x%08x/%d/%d.%d): out of memory\n",
afid->Cell, afid->Fid.Volume, afid->Fid.Vnode, afid->Fid.Unique);
#endif
afs_DestroyReq(treq);
afs_DestroyAttr(vattr);
return ERR_PTR(-ENOMEM);
}
dp->d_op = &afs_dentry_operations;
afs_DestroyReq(treq);
afs_DestroyAttr(vattr);
return dp;
}
/* copy out attributes from cache entry */
int
afs_CopyOutAttrs(struct vcache *avc, struct vattr *attrs)
{
struct volume *tvp;
struct cell *tcell;
#if defined(AFS_FBSD_ENV) || defined(AFS_DFBSD_ENV)
struct vnode *vp = AFSTOV(avc);
#endif
int fakedir = 0;
AFS_STATCNT(afs_CopyOutAttrs);
if (afs_fakestat_enable && avc->mvstat == 1)
fakedir = 1;
attrs->va_type = fakedir ? VDIR : vType(avc);
#if defined(AFS_SGI_ENV) || defined(AFS_AIX32_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_DARWIN_ENV)
attrs->va_mode = fakedir ? S_IFDIR | 0755 : (mode_t) (avc->f.m.Mode & 0xffff);
#else
attrs->va_mode = fakedir ? VDIR | 0755 : avc->f.m.Mode;
#endif
if (avc->f.m.Mode & (VSUID | VSGID)) {
/* setuid or setgid, make sure we're allowed to run them from this cell */
tcell = afs_GetCell(avc->f.fid.Cell, 0);
if (tcell && (tcell->states & CNoSUID))
attrs->va_mode &= ~(VSUID | VSGID);
}
#if defined(AFS_DARWIN_ENV)
{
if (!afs_darwin_realmodes) {
/* Mac OS X uses the mode bits to determine whether a file or
* directory is accessible, and believes them, even though under
* AFS they're almost assuredly wrong, especially if the local uid
* does not match the AFS ID. So we set the mode bits
* conservatively.
*/
if (S_ISDIR(attrs->va_mode)) {
/* all access bits need to be set for directories, since even
* a mode 0 directory can still be used normally.
*/
attrs->va_mode |= ACCESSPERMS;
} else {
/* for other files, replicate the user bits to group and other */
mode_t ubits = (attrs->va_mode & S_IRWXU) >> 6;
attrs->va_mode |= ubits | (ubits << 3);
}
}
}
#endif /* AFS_DARWIN_ENV */
attrs->va_uid = fakedir ? 0 : avc->f.m.Owner;
attrs->va_gid = fakedir ? 0 : avc->f.m.Group; /* yeah! */
#if defined(AFS_SUN5_ENV)
attrs->va_fsid = avc->v.v_vfsp->vfs_fsid.val[0];
#elif defined(AFS_DARWIN80_ENV)
VATTR_RETURN(attrs, va_fsid, vfs_statfs(vnode_mount(AFSTOV(avc)))->f_fsid.val[0]);
#elif defined(AFS_DARWIN_ENV)
attrs->va_fsid = avc->v->v_mount->mnt_stat.f_fsid.val[0];
#else /* ! AFS_DARWIN_ENV */
attrs->va_fsid = 1;
#endif
if (avc->mvstat == 2) {
tvp = afs_GetVolume(&avc->f.fid, 0, READ_LOCK);
/* The mount point's vnode. */
if (tvp) {
attrs->va_nodeid =
afs_calc_inum(tvp->mtpoint.Cell,
tvp->mtpoint.Fid.Volume,
tvp->mtpoint.Fid.Vnode);
if (FidCmp(&afs_rootFid, &avc->f.fid) && !attrs->va_nodeid)
attrs->va_nodeid = 2;
afs_PutVolume(tvp, READ_LOCK);
} else
attrs->va_nodeid = 2;
} else
attrs->va_nodeid =
afs_calc_inum(avc->f.fid.Cell,
avc->f.fid.Fid.Volume,
avc->f.fid.Fid.Vnode);
attrs->va_nodeid &= 0x7fffffff; /* Saber C hates negative inode #s! */
attrs->va_nlink = fakedir ? 100 : avc->f.m.LinkCount;
attrs->va_size = fakedir ? 4096 : avc->f.m.Length;
#if defined(AFS_FBSD_ENV) || defined(AFS_DFBSD_ENV)
vnode_pager_setsize(vp, (u_long) attrs->va_size);
#endif
attrs->va_atime.tv_sec = attrs->va_mtime.tv_sec = attrs->va_ctime.tv_sec =
fakedir ? 0 : (int)avc->f.m.Date;
/* set microseconds to be dataversion # so that we approximate NFS-style
* use of mtime as a dataversion #. We take it mod 512K because
* microseconds *must* be less than a million, and 512K is the biggest
* power of 2 less than such. DataVersions are typically pretty small
* anyway, so the difference between 512K and 1000000 shouldn't matter
* much, and "&" is a lot faster than "%".
*/
#if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
/* nfs on these systems puts an 0 in nsec and stores the nfs usec (aka
* dataversion) in va_gen */
attrs->va_atime.tv_nsec = attrs->va_mtime.tv_nsec =
attrs->va_ctime.tv_nsec = 0;
attrs->va_gen = hgetlo(avc->f.m.DataVersion);
#elif defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_AIX41_ENV) || defined(AFS_OBSD_ENV) || defined(AFS_NBSD_ENV)
attrs->va_atime.tv_nsec = attrs->va_mtime.tv_nsec =
attrs->va_ctime.tv_nsec =
(hgetlo(avc->f.m.DataVersion) & 0x7ffff) * 1000;
#else
attrs->va_atime.tv_usec = attrs->va_mtime.tv_usec =
attrs->va_ctime.tv_usec = (hgetlo(avc->f.m.DataVersion) & 0x7ffff);
#endif
#if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
attrs->va_flags = 0;
#endif
#if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV)
attrs->va_blksize = AFS_BLKSIZE; /* XXX Was 8192 XXX */
#else
attrs->va_blocksize = AFS_BLKSIZE; /* XXX Was 8192 XXX */
#endif
attrs->va_rdev = 1;
#if defined(AFS_HPUX110_ENV)
if (afs_globalVFS)
attrs->va_fstype = afs_globalVFS->vfs_mtype;
#endif
/*
* Below return 0 (and not 1) blocks if the file is zero length. This conforms
* better with the other filesystems that do return 0.
*/
#if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
attrs->va_bytes = (attrs->va_size ? (attrs->va_size + 1023) : 1024);
#ifdef va_bytes_rsv
attrs->va_bytes_rsv = -1;
#endif
#elif defined(AFS_HPUX_ENV)
attrs->va_blocks = (attrs->va_size ? ((attrs->va_size + 1023)>>10) : 0);
#elif defined(AFS_SGI_ENV)
attrs->va_blocks = BTOBB(attrs->va_size);
#elif defined(AFS_SUN5_ENV)
attrs->va_nblocks = (attrs->va_size ? ((attrs->va_size + 1023)>>10)<<1:0);
#else /* everything else */
attrs->va_blocks = (attrs->va_size ? ((attrs->va_size + 1023)>>10)<<1:0);
#endif
return 0;
}
int
afs_getattr(OSI_VC_DECL(avc), struct vattr *attrs, afs_ucred_t *acred)
#endif
{
afs_int32 code;
struct vrequest treq;
struct unixuser *au;
int inited = 0;
OSI_VC_CONVERT(avc);
AFS_STATCNT(afs_getattr);
afs_Trace2(afs_iclSetp, CM_TRACE_GETATTR, ICL_TYPE_POINTER, avc,
ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length));
if (afs_fakestat_enable && avc->mvstat == 1) {
struct afs_fakestat_state fakestat;
code = afs_InitReq(&treq, acred);
if (code)
return code;
afs_InitFakeStat(&fakestat);
code = afs_TryEvalFakeStat(&avc, &fakestat, &treq);
if (code) {
afs_PutFakeStat(&fakestat);
return code;
}
code = afs_CopyOutAttrs(avc, attrs);
afs_PutFakeStat(&fakestat);
return code;
}
#if defined(AFS_SUN5_ENV)
if (flags & ATTR_HINT) {
code = afs_CopyOutAttrs(avc, attrs);
return code;
}
#endif
#if defined(AFS_DARWIN_ENV) && !defined(AFS_DARWIN80_ENV)
if (avc->f.states & CUBCinit) {
code = afs_CopyOutAttrs(avc, attrs);
return code;
}
#endif
AFS_DISCON_LOCK();
#ifdef AFS_BOZONLOCK_ENV
afs_BozonLock(&avc->pvnLock, avc);
#endif
if (afs_shuttingdown)
return EIO;
if (!(avc->f.states & CStatd)) {
if (!(code = afs_InitReq(&treq, acred))) {
code = afs_VerifyVCache2(avc, &treq);
inited = 1;
}
} else
code = 0;
#if defined(AFS_SUN5_ENV) || defined(AFS_BOZONLOCK_ENV)
if (code == 0)
osi_FlushPages(avc, acred);
#endif
#ifdef AFS_BOZONLOCK_ENV
afs_BozonUnlock(&avc->pvnLock, avc);
#endif
if (code == 0) {
osi_FlushText(avc); /* only needed to flush text if text locked last time */
code = afs_CopyOutAttrs(avc, attrs);
if (afs_nfsexporter) {
if (!inited) {
if ((code = afs_InitReq(&treq, acred)))
return code;
inited = 1;
}
if (AFS_NFSXLATORREQ(acred)) {
if ((vType(avc) != VDIR)
&& !afs_AccessOK(avc, PRSFS_READ, &treq,
CHECK_MODE_BITS |
CMB_ALLOW_EXEC_AS_READ)) {
return EACCES;
}
}
if ((au = afs_FindUser(treq.uid, -1, READ_LOCK))) {
struct afs_exporter *exporter = au->exporter;
if (exporter && !(afs_nfsexporter->exp_states & EXP_UNIXMODE)) {
unsigned int ubits;
/*
* If the remote user wishes to enforce default Unix mode semantics,
* like in the nfs exporter case, we OR in the user bits
* into the group and other bits. We need to do this
* because there is no RFS_ACCESS call and thus nfs
* clients implement nfs_access by interpreting the
* mode bits in the traditional way, which of course
* loses with afs.
*/
ubits = (attrs->va_mode & 0700) >> 6;
attrs->va_mode = attrs->va_mode | ubits | (ubits << 3);
/* If it's the root of AFS, replace the inode number with the
* inode number of the mounted on directory; otherwise this
* confuses getwd()... */
#ifdef AFS_LINUX22_ENV
if (avc == afs_globalVp) {
struct inode *ip = AFSTOV(avc)->i_sb->s_root->d_inode;
attrs->va_nodeid = ip->i_ino; /* VTOI()? */
}
#else
if (
#if defined(AFS_DARWIN_ENV)
vnode_isvroot(AFSTOV(avc))
#elif defined(AFS_NBSD50_ENV)
AFSTOV(avc)->v_vflag & VV_ROOT
#else
AFSTOV(avc)->v_flag & VROOT
#endif
) {
struct vnode *vp = AFSTOV(avc);
#ifdef AFS_DARWIN80_ENV
/* XXX vp = vnode_mount(vp)->mnt_vnodecovered; */
vp = 0;
#else
vp = vp->v_vfsp->vfs_vnodecovered;
if (vp) { /* Ignore weird failures */
#ifdef AFS_SGI62_ENV
attrs->va_nodeid = VnodeToIno(vp);
#else
struct inode *ip;
ip = (struct inode *)VTOI(vp);
if (ip) /* Ignore weird failures */
attrs->va_nodeid = ip->i_number;
#endif
}
#endif
}
#endif /* AFS_LINUX22_ENV */
}
afs_PutUser(au, READ_LOCK);
}
}
/* Note that we don't set CDirty here, this is OK because the unlink
* RPC is called synchronously */
int
afs_remove(OSI_VC_DECL(adp), char *aname, afs_ucred_t *acred)
{
struct vrequest treq;
struct dcache *tdc;
struct VenusFid unlinkFid;
afs_int32 code;
struct vcache *tvc;
afs_size_t offset, len;
struct afs_fakestat_state fakestate;
OSI_VC_CONVERT(adp);
AFS_STATCNT(afs_remove);
afs_Trace2(afs_iclSetp, CM_TRACE_REMOVE, ICL_TYPE_POINTER, adp,
ICL_TYPE_STRING, aname);
if ((code = afs_InitReq(&treq, acred))) {
return code;
}
afs_InitFakeStat(&fakestate);
AFS_DISCON_LOCK();
code = afs_EvalFakeStat(&adp, &fakestate, &treq);
if (code)
goto done;
/* Check if this is dynroot */
if (afs_IsDynroot(adp)) {
code = afs_DynrootVOPRemove(adp, acred, aname);
goto done;
}
if (afs_IsDynrootMount(adp)) {
code = ENOENT;
goto done;
}
if (strlen(aname) > AFSNAMEMAX) {
code = ENAMETOOLONG;
goto done;
}
tagain:
code = afs_VerifyVCache(adp, &treq);
tvc = NULL;
if (code) {
code = afs_CheckCode(code, &treq, 23);
goto done;
}
/** If the volume is read-only, return error without making an RPC to the
* fileserver
*/
if (adp->f.states & CRO) {
code = EROFS;
goto done;
}
/* If we're running disconnected without logging, go no further... */
if (AFS_IS_DISCONNECTED && !AFS_IS_DISCON_RW) {
code = ENETDOWN;
goto done;
}
tdc = afs_GetDCache(adp, (afs_size_t) 0, &treq, &offset, &len, 1); /* test for error below */
ObtainWriteLock(&adp->lock, 142);
if (tdc)
ObtainSharedLock(&tdc->lock, 638);
/*
* Make sure that the data in the cache is current. We may have
* received a callback while we were waiting for the write lock.
*/
if (!(adp->f.states & CStatd)
|| (tdc && !hsame(adp->f.m.DataVersion, tdc->f.versionNo))) {
ReleaseWriteLock(&adp->lock);
if (tdc) {
ReleaseSharedLock(&tdc->lock);
afs_PutDCache(tdc);
}
goto tagain;
}
unlinkFid.Fid.Vnode = 0;
if (!tvc) {
tvc = osi_dnlc_lookup(adp, aname, WRITE_LOCK);
}
/* This should not be necessary since afs_lookup() has already
* done the work.
*/
if (!tvc)
if (tdc) {
code = afs_dir_Lookup(tdc, aname, &unlinkFid.Fid);
if (code == 0) {
afs_int32 cached = 0;
unlinkFid.Cell = adp->f.fid.Cell;
unlinkFid.Fid.Volume = adp->f.fid.Fid.Volume;
if (unlinkFid.Fid.Unique == 0) {
tvc =
afs_LookupVCache(&unlinkFid, &treq, &cached, adp,
aname);
} else {
ObtainReadLock(&afs_xvcache);
tvc = afs_FindVCache(&unlinkFid, 0, DO_STATS);
ReleaseReadLock(&afs_xvcache);
}
}
}
if (AFS_IS_DISCON_RW) {
if (!adp->f.shadow.vnode && !(adp->f.ddirty_flags & VDisconCreate)) {
/* Make shadow copy of parent dir. */
afs_MakeShadowDir(adp, tdc);
}
/* Can't hold a dcache lock whilst we're getting a vcache one */
if (tdc)
ReleaseSharedLock(&tdc->lock);
/* XXX - We're holding adp->lock still, and we've got no
* guarantee about whether the ordering matches the lock hierarchy */
ObtainWriteLock(&tvc->lock, 713);
/* If we were locally created, then we don't need to do very
* much beyond ensuring that we don't exist anymore */
if (tvc->f.ddirty_flags & VDisconCreate) {
afs_DisconRemoveDirty(tvc);
} else {
/* Add removed file vcache to dirty list. */
afs_DisconAddDirty(tvc, VDisconRemove, 1);
}
adp->f.m.LinkCount--;
ReleaseWriteLock(&tvc->lock);
if (tdc)
ObtainSharedLock(&tdc->lock, 714);
}
if (tvc && osi_Active(tvc)) {
/* about to delete whole file, prefetch it first */
ReleaseWriteLock(&adp->lock);
if (tdc)
ReleaseSharedLock(&tdc->lock);
ObtainWriteLock(&tvc->lock, 143);
FetchWholeEnchilada(tvc, &treq);
ReleaseWriteLock(&tvc->lock);
ObtainWriteLock(&adp->lock, 144);
/* Technically I don't think we need this back, but let's hold it
anyway; The "got" reference should actually be sufficient. */
if (tdc)
ObtainSharedLock(&tdc->lock, 640);
}
osi_dnlc_remove(adp, aname, tvc);
Tadp1 = adp;
#ifndef AFS_DARWIN80_ENV
Tadpr = VREFCOUNT(adp);
#endif
Ttvc = tvc;
Tnam = aname;
Tnam1 = 0;
#ifndef AFS_DARWIN80_ENV
if (tvc)
Ttvcr = VREFCOUNT(tvc);
#endif
#ifdef AFS_AIX_ENV
if (tvc && VREFCOUNT_GT(tvc, 2) && tvc->opens > 0
&& !(tvc->f.states & CUnlinked)) {
#else
if (tvc && VREFCOUNT_GT(tvc, 1) && tvc->opens > 0
&& !(tvc->f.states & CUnlinked)) {
#endif
char *unlname = afs_newname();
ReleaseWriteLock(&adp->lock);
if (tdc)
ReleaseSharedLock(&tdc->lock);
code = afsrename(adp, aname, adp, unlname, acred, &treq);
Tnam1 = unlname;
if (!code) {
struct VenusFid *oldmvid = NULL;
if (tvc->mvid)
oldmvid = tvc->mvid;
tvc->mvid = (struct VenusFid *)unlname;
if (oldmvid)
osi_FreeSmallSpace(oldmvid);
crhold(acred);
if (tvc->uncred) {
crfree(tvc->uncred);
}
tvc->uncred = acred;
tvc->f.states |= CUnlinked;
/* if rename succeeded, remove should not */
ObtainWriteLock(&tvc->lock, 715);
if (tvc->f.ddirty_flags & VDisconRemove) {
tvc->f.ddirty_flags &= ~VDisconRemove;
}
ReleaseWriteLock(&tvc->lock);
} else {
osi_FreeSmallSpace(unlname);
}
if (tdc)
afs_PutDCache(tdc);
afs_PutVCache(tvc);
} else {
code = afsremove(adp, tdc, tvc, aname, acred, &treq);
}
done:
afs_PutFakeStat(&fakestate);
#if !defined(AFS_DARWIN80_ENV) && !defined(UKERNEL)
/* we can't track by thread, it's not exported in the KPI; only do
this on !macos */
osi_Assert(!WriteLocked(&adp->lock) || (adp->lock.pid_writer != MyPidxx));
#endif
AFS_DISCON_UNLOCK();
return code;
}
/* afs_remunlink -- This tries to delete the file at the server after it has
* been renamed when unlinked locally but now has been finally released.
*
* CAUTION -- may be called with avc unheld. */
int
afs_remunlink(struct vcache *avc, int doit)
{
afs_ucred_t *cred;
char *unlname;
struct vcache *adp;
struct vrequest treq;
struct VenusFid dirFid;
struct dcache *tdc;
afs_int32 code = 0;
if (NBObtainWriteLock(&avc->lock, 423))
return 0;
#if defined(AFS_DARWIN80_ENV)
if (vnode_get(AFSTOV(avc))) {
ReleaseWriteLock(&avc->lock);
return 0;
}
#endif
if (avc->mvid && (doit || (avc->f.states & CUnlinkedDel))) {
if ((code = afs_InitReq(&treq, avc->uncred))) {
ReleaseWriteLock(&avc->lock);
} else {
/* Must bump the refCount because GetVCache may block.
* Also clear mvid so no other thread comes here if we block.
*/
unlname = (char *)avc->mvid;
avc->mvid = NULL;
cred = avc->uncred;
avc->uncred = NULL;
#if defined(AFS_DARWIN_ENV) && !defined(AFS_DARWIN80_ENV)
VREF(AFSTOV(avc));
#else
AFS_FAST_HOLD(avc);
#endif
/* We'll only try this once. If it fails, just release the vnode.
* Clear after doing hold so that NewVCache doesn't find us yet.
*/
avc->f.states &= ~(CUnlinked | CUnlinkedDel);
ReleaseWriteLock(&avc->lock);
dirFid.Cell = avc->f.fid.Cell;
dirFid.Fid.Volume = avc->f.fid.Fid.Volume;
dirFid.Fid.Vnode = avc->f.parent.vnode;
dirFid.Fid.Unique = avc->f.parent.unique;
adp = afs_GetVCache(&dirFid, &treq, NULL, NULL);
if (adp) {
tdc = afs_FindDCache(adp, (afs_size_t) 0);
ObtainWriteLock(&adp->lock, 159);
if (tdc)
ObtainSharedLock(&tdc->lock, 639);
/* afsremove releases the adp & tdc locks, and does vn_rele(avc) */
code = afsremove(adp, tdc, avc, unlname, cred, &treq);
afs_PutVCache(adp);
} else {
/* we failed - and won't be back to try again. */
afs_PutVCache(avc);
}
osi_FreeSmallSpace(unlname);
crfree(cred);
}
} else {
#if defined(AFS_DARWIN80_ENV)
vnode_put(AFSTOV(avc));
#endif
ReleaseWriteLock(&avc->lock);
}
return code;
}
int
SRXAFSCB_GetCE(struct rx_call *a_call, afs_int32 a_index,
struct AFSDBCacheEntry *a_result)
{
int i; /*Loop variable */
struct vcache *tvc; /*Ptr to current cache entry */
int code; /*Return code */
XSTATS_DECLS;
RX_AFS_GLOCK();
XSTATS_START_CMTIME(AFS_STATS_CM_RPCIDX_GETCE);
AFS_STATCNT(SRXAFSCB_GetCE);
for (i = 0; i < VCSIZE; i++) {
for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) {
if (a_index == 0)
goto searchDone;
a_index--;
} /*Zip through current hash chain */
} /*Zip through hash chains */
searchDone:
if (tvc == NULL) {
/*Past EOF */
code = 1;
goto fcnDone;
}
/*
* Copy out the located entry.
*/
a_result->addr = afs_data_pointer_to_int32(tvc);
a_result->cell = tvc->f.fid.Cell;
a_result->netFid.Volume = tvc->f.fid.Fid.Volume;
a_result->netFid.Vnode = tvc->f.fid.Fid.Vnode;
a_result->netFid.Unique = tvc->f.fid.Fid.Unique;
a_result->lock.waitStates = tvc->lock.wait_states;
a_result->lock.exclLocked = tvc->lock.excl_locked;
a_result->lock.readersReading = tvc->lock.readers_reading;
a_result->lock.numWaiting = tvc->lock.num_waiting;
#if defined(INSTRUMENT_LOCKS)
a_result->lock.pid_last_reader = MyPidxx2Pid(tvc->lock.pid_last_reader);
a_result->lock.pid_writer = MyPidxx2Pid(tvc->lock.pid_writer);
a_result->lock.src_indicator = tvc->lock.src_indicator;
#else
/* On osf20 , the vcache does not maintain these three fields */
a_result->lock.pid_last_reader = 0;
a_result->lock.pid_writer = 0;
a_result->lock.src_indicator = 0;
#endif /* INSTRUMENT_LOCKS */
#ifdef AFS_64BIT_CLIENT
a_result->Length = (afs_int32) tvc->f.m.Length & 0xffffffff;
#else /* AFS_64BIT_CLIENT */
a_result->Length = tvc->f.m.Length;
#endif /* AFS_64BIT_CLIENT */
a_result->DataVersion = hgetlo(tvc->f.m.DataVersion);
a_result->callback = afs_data_pointer_to_int32(tvc->callback); /* XXXX Now a pointer; change it XXXX */
a_result->cbExpires = tvc->cbExpires;
if (tvc->f.states & CVInit) {
a_result->refCount = 1;
} else {
#ifdef AFS_DARWIN80_ENV
a_result->refCount = vnode_isinuse(AFSTOV(tvc),0)?1:0; /* XXX fix */
#else
a_result->refCount = VREFCOUNT(tvc);
#endif
}
a_result->opens = tvc->opens;
a_result->writers = tvc->execsOrWriters;
a_result->mvstat = tvc->mvstat;
a_result->states = tvc->f.states;
code = 0;
/*
* Return our results.
*/
fcnDone:
XSTATS_END_TIME;
RX_AFS_GUNLOCK();
return (code);
} /*SRXAFSCB_GetCE */
static int
ClearCallBack(struct rx_connection *a_conn,
struct AFSFid *a_fid)
{
struct vcache *tvc;
int i;
struct VenusFid localFid;
struct volume *tv;
#ifdef AFS_DARWIN80_ENV
vnode_t vp;
#endif
AFS_STATCNT(ClearCallBack);
AFS_ASSERT_GLOCK();
/*
* XXXX Don't hold any server locks here because of callback protocol XXX
*/
localFid.Cell = 0;
localFid.Fid.Volume = a_fid->Volume;
localFid.Fid.Vnode = a_fid->Vnode;
localFid.Fid.Unique = a_fid->Unique;
/*
* Volume ID of zero means don't do anything.
*/
if (a_fid->Volume != 0) {
if (a_fid->Vnode == 0) {
struct afs_q *tq, *uq;
/*
* Clear callback for the whole volume. Zip through the
* hash chain, nullifying entries whose volume ID matches.
*/
loop1:
ObtainReadLock(&afs_xvcache);
i = VCHashV(&localFid);
for (tq = afs_vhashTV[i].prev; tq != &afs_vhashTV[i]; tq = uq) {
uq = QPrev(tq);
tvc = QTOVH(tq);
if (tvc->f.fid.Fid.Volume == a_fid->Volume) {
tvc->callback = NULL;
if (!localFid.Cell)
localFid.Cell = tvc->f.fid.Cell;
tvc->dchint = NULL; /* invalidate hints */
if (tvc->f.states & CVInit) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop1;
}
#if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
AFS_FAST_HOLD(tvc);
#else
#ifdef AFS_DARWIN80_ENV
if (tvc->f.states & CDeadVnode) {
if (!(tvc->f.states & CBulkFetching)) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop1;
}
}
vp = AFSTOV(tvc);
if (vnode_get(vp))
continue;
if (vnode_ref(vp)) {
AFS_GUNLOCK();
vnode_put(vp);
AFS_GLOCK();
continue;
}
if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
AFS_GUNLOCK();
vnode_recycle(AFSTOV(tvc));
AFS_GLOCK();
}
#else
AFS_FAST_HOLD(tvc);
#endif
#endif
ReleaseReadLock(&afs_xvcache);
ObtainWriteLock(&afs_xcbhash, 449);
afs_DequeueCallback(tvc);
tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
afs_allCBs++;
if (tvc->f.fid.Fid.Vnode & 1)
afs_oddCBs++;
else
afs_evenCBs++;
ReleaseWriteLock(&afs_xcbhash);
if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
osi_dnlc_purgedp(tvc);
afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
tvc->f.states, ICL_TYPE_INT32,
a_fid->Volume);
#ifdef AFS_DARWIN80_ENV
vnode_put(AFSTOV(tvc));
#endif
ObtainReadLock(&afs_xvcache);
uq = QPrev(tq);
AFS_FAST_RELE(tvc);
} else if ((tvc->f.states & CMValid)
&& (tvc->mvid->Fid.Volume == a_fid->Volume)) {
tvc->f.states &= ~CMValid;
if (!localFid.Cell)
localFid.Cell = tvc->mvid->Cell;
}
}
ReleaseReadLock(&afs_xvcache);
/*
* XXXX Don't hold any locks here XXXX
*/
tv = afs_FindVolume(&localFid, 0);
if (tv) {
afs_ResetVolumeInfo(tv);
afs_PutVolume(tv, 0);
/* invalidate mtpoint? */
}
} /*Clear callbacks for whole volume */
else {
/*
* Clear callbacks just for the one file.
*/
struct vcache *uvc;
afs_allCBs++;
if (a_fid->Vnode & 1)
afs_oddCBs++; /*Could do this on volume basis, too */
else
afs_evenCBs++; /*A particular fid was specified */
loop2:
ObtainReadLock(&afs_xvcache);
i = VCHash(&localFid);
for (tvc = afs_vhashT[i]; tvc; tvc = uvc) {
uvc = tvc->hnext;
if (tvc->f.fid.Fid.Vnode == a_fid->Vnode
&& tvc->f.fid.Fid.Volume == a_fid->Volume
&& tvc->f.fid.Fid.Unique == a_fid->Unique) {
tvc->callback = NULL;
tvc->dchint = NULL; /* invalidate hints */
if (tvc->f.states & CVInit) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop2;
}
#if defined(AFS_SGI_ENV) || defined(AFS_SUN5_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV)
AFS_FAST_HOLD(tvc);
#else
#ifdef AFS_DARWIN80_ENV
if (tvc->f.states & CDeadVnode) {
if (!(tvc->f.states & CBulkFetching)) {
ReleaseReadLock(&afs_xvcache);
afs_osi_Sleep(&tvc->f.states);
goto loop2;
}
}
vp = AFSTOV(tvc);
if (vnode_get(vp))
continue;
if (vnode_ref(vp)) {
AFS_GUNLOCK();
vnode_put(vp);
AFS_GLOCK();
continue;
}
if (tvc->f.states & (CBulkFetching|CDeadVnode)) {
AFS_GUNLOCK();
vnode_recycle(AFSTOV(tvc));
AFS_GLOCK();
}
#else
AFS_FAST_HOLD(tvc);
#endif
#endif
ReleaseReadLock(&afs_xvcache);
ObtainWriteLock(&afs_xcbhash, 450);
afs_DequeueCallback(tvc);
tvc->f.states &= ~(CStatd | CUnique | CBulkFetching);
ReleaseWriteLock(&afs_xcbhash);
if ((tvc->f.fid.Fid.Vnode & 1 || (vType(tvc) == VDIR)))
osi_dnlc_purgedp(tvc);
afs_Trace3(afs_iclSetp, CM_TRACE_CALLBACK,
ICL_TYPE_POINTER, tvc, ICL_TYPE_INT32,
tvc->f.states, ICL_TYPE_LONG, 0);
#ifdef CBDEBUG
lastCallBack_vnode = afid->Vnode;
lastCallBack_dv = tvc->mstat.DataVersion.low;
osi_GetuTime(&lastCallBack_time);
#endif /* CBDEBUG */
#ifdef AFS_DARWIN80_ENV
vnode_put(AFSTOV(tvc));
#endif
ObtainReadLock(&afs_xvcache);
uvc = tvc->hnext;
AFS_FAST_RELE(tvc);
}
} /*Walk through hash table */
ReleaseReadLock(&afs_xvcache);
} /*Clear callbacks for one file */
}
/*Fid has non-zero volume ID */
/*
* Always return a predictable value.
*/
return (0);
} /*ClearCallBack */
