/*! \brief Mount a volume.
* \param dev - The device containing the volume to mount.
* \param nPart - The volume number to mount.
* \param readOnly - TRUE if read only access is desired, FALSE otherwise.
* \return The Volume, NULL in case of error.
*
* Mounts a designated volume (nPart) of the Device (dev), with specified read/write access (readOnly).
* The first partition is #0. The current working directory is the root block.
*
* \b Internals \n
* 1. Read the bootblock to determine vol->dosType and vol->datablockSize. \n
* 2. Read the rootblock, fills vol->curDirPtr. \n
* 3. Read and allocate the bitmap : vol->bitmapBlocks[], vol->bitmapTable[], vol->bitmapSize, vol->bitmapBlocksChg[]. \n
*/
struct Volume* adfMount( struct Device *dev, int nPart, BOOL readOnly )
{
long nBlock;
struct bRootBlock root;
struct bBootBlock boot;
struct Volume* vol;
if (dev==NULL || nPart<nPart || nPart >= dev->nVol) {
(*adfEnv.eFct)("adfMount : invalid parameter(s)");
return NULL;
}
vol = dev->volList[nPart];
vol->dev = dev;
vol->mounted = TRUE;
#ifdef _DEBUG_PRINTF_
printf("first=%ld last=%ld root=%ld\n",vol->firstBlock, vol->lastBlock, vol->rootBlock);
#endif /*_DEBUG_PRINTF_*/
if (adfReadBootBlock(vol, &boot)!=RC_OK) {
(*adfEnv.wFct)("adfMount : BootBlock invalid");
return NULL;
}
vol->dosType = boot.dosType[3];
if (isFFS(vol->dosType))
vol->datablockSize=512;
else
vol->datablockSize=488;
if (dev->readOnly /*|| isDIRCACHE(vol->dosType)*/)
vol->readOnly = TRUE;
else
vol->readOnly = readOnly;
if (adfReadRootBlock(vol, vol->rootBlock, &root)!=RC_OK) {
(*adfEnv.wFct)("adfMount : RootBlock invalid");
return NULL;
}
nBlock = vol->lastBlock - vol->firstBlock +1 - 2;
adfReadBitmap( vol, nBlock, &root );
vol->curDirPtr = vol->rootBlock;
#ifdef _DEBUG_PRINTF_
printf("blockSize=%d\n",vol->blockSize);
#endif /*_DEBUG_PRINTF_*/
return( vol );
}
RETCODE adfInstallBootBlock(struct Volume *vol, unsigned char* code)
{
int i;
struct bBootBlock boot;
if (vol->dev->devType!=DEVTYPE_FLOPDD && vol->dev->devType!=DEVTYPE_FLOPHD)
return RC_ERROR;
if (adfReadBootBlock(vol, &boot)!=RC_OK)
return RC_ERROR;
boot.rootBlock = 880;
for(i=0; i<1024-12; i++) /* bootcode */
boot.data[i] = code[i+12];
if (adfWriteBootBlock(vol, &boot)!=RC_OK)
return RC_ERROR;
vol->bootCode = TRUE;
return RC_OK;
}
