int rawfsMount(
struct mount *pMount
) {
RAWFS_DEV *pFsDev;
RAWFS_VOLUME_DESC *pVolDesc;
unsigned sectorSize;
long long totalSize;
pFsDev = (RAWFS_DEV *) pMount->mnt_data;
pVolDesc = &(pFsDev->volDesc);
memset (pFsDev, 0, sizeof(RAWFS_DEV));
/* Get setup from device */
if ((xbdBlockSize (pMount->mnt_dev, §orSize) != OK) ||
(xbdSize (pMount->mnt_dev, &totalSize) != OK)) {
return (EINVAL);
}
/* Inititalize syncer vnode */
pMount->mnt_syncer->v_ops = (struct vnode_ops *) &rawVops;
/* Inititalize semaphore */
pFsDev->bioSem = semBCreate (SEM_Q_PRIORITY, SEM_EMPTY);
if (pFsDev->bioSem == NULL) {
return (ENOBUFS);
}
/* Inititalize volume desciptor */
pVolDesc->pMount = pMount;
pVolDesc->device = pMount->mnt_dev;
pVolDesc->blkSize = sectorSize;
pVolDesc->blkSize2 = ffsMsb(pVolDesc->blkSize) - 1;
pVolDesc->secPerBlk2 = 1 + pVolDesc->blkSize2 - ffsMsb(sectorSize);
pVolDesc->secPerBlk = (1 << pVolDesc->blkSize2);
pVolDesc->diskSize = totalSize;
return (OK);
}
int hashFuncMultiply
(
int elements, /* number of elements in hash table */
H_NODE_INT *pHNode, /* pointer to integer keyed hash node */
int multiplier /* multiplier */
)
{
FAST int hash;
hash = pHNode->key * multiplier; /* multiplicative hash func */
hash = hash >> (33 - ffsMsb (elements)); /* take only the leading bits */
return (hash & (elements - 1)); /* mask hash to (0,elements-1)*/
}