/*
* Put a cnode in the hash table.
*/
void
coda_save(struct cnode *cp)
{
CNODE_NEXT(cp) = coda_cache[coda_hash(&cp->c_fid)];
coda_cache[coda_hash(&cp->c_fid)] = cp;
}
/*
* Deallocate a cnode.
*/
void
coda_free(struct cnode *cp)
{
CNODE_NEXT(cp) = coda_freelist;
coda_freelist = cp;
}
/*
* Allocate a cnode.
*/
struct cnode *
coda_alloc(void)
{
struct cnode *cp;
if (coda_freelist) {
cp = coda_freelist;
coda_freelist = CNODE_NEXT(cp);
bzero(cp, sizeof (struct cnode));
SET_CNODE_NAME("Cnode is reused");
coda_reuse++;
}
else {
CODA_ALLOC(cp, struct cnode *, sizeof(struct cnode));
if(cp == 0) return cp;
/* NetBSD vnodes don't have any Pager info in them ('cause there are
no external pagers, duh!) */
#define VNODE_VM_INFO_INIT(vp) /* MT */
VNODE_VM_INFO_INIT(CTOV(cp));
bzero(cp, sizeof (struct cnode));
SET_CNODE_NAME("Cnode is fresh");
coda_new++;
}
return(cp);
}
/*
* Remove a cnode from the hash table.
*/
void
coda_unsave(struct cnode *cp)
{
struct cnode *ptr;
struct cnode *ptrprev = NULL;
ptr = coda_cache[coda_hash(&cp->c_fid)];
while (ptr != NULL) {
if (ptr == cp) {
if (ptrprev == NULL)
coda_cache[coda_hash(&cp->c_fid)] =
CNODE_NEXT(ptr);
else
CNODE_NEXT(ptrprev) = CNODE_NEXT(ptr);
CNODE_NEXT(cp) = (struct cnode *)NULL;
return;
}
ptrprev = ptr;
ptr = CNODE_NEXT(ptr);
}
}
/*
* Lookup a cnode by fid. If the cnode is dying, it is bogus so skip it.
*
* NOTE: this allows multiple cnodes with same fid -- dcs 1/25/95
*/
struct cnode *
coda_find(struct CodaFid *fid)
{
struct cnode *cp;
cp = coda_cache[coda_hash(fid)];
while (cp) {
if (coda_fid_eq(&(cp->c_fid), fid) && (!IS_UNMOUNTING(cp))) {
coda_active++;
return (cp);
}
cp = CNODE_NEXT(cp);
}
return (NULL);
}
/*
* Clear all cached access control decisions from Coda.
*/
static void
coda_acccache_purge(struct mount *mnt)
{
struct cnode *cp;
int hash;
for (hash = 0; hash < CODA_CACHESIZE; hash++) {
for (cp = coda_cache[hash]; cp != NULL;
cp = CNODE_NEXT(cp)) {
if (CTOV(cp)->v_mount == mnt && VALID_ACCCACHE(cp)) {
CODADEBUG(CODA_FLUSH, myprintf(("acccache "
"purge fid %s uid %d mode 0x%x\n",
coda_f2s(&cp->c_fid), cp->c_cached_uid,
(int)cp->c_cached_mode)););
cp->c_flags &= ~C_ACCCACHE;
}
}
/*
* Allocate a cnode.
*/
struct cnode *
coda_alloc(void)
{
struct cnode *cp;
if (coda_freelist != NULL) {
cp = coda_freelist;
coda_freelist = CNODE_NEXT(cp);
coda_reuse++;
} else {
CODA_ALLOC(cp, struct cnode *, sizeof(struct cnode));
/*
* FreeBSD vnodes don't have any Pager info in them ('cause
* there are no external pagers, duh!).
*/
#define VNODE_VM_INFO_INIT(vp) /* MT */
VNODE_VM_INFO_INIT(CTOV(cp));
coda_new++;
}
bzero(cp, sizeof (struct cnode));
return (cp);
}
