631 lines
15 KiB
C++
631 lines
15 KiB
C++
// See $LK,"RedSea File System",A="FI:::/Doc/RedSea.TXT"$
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U0 RedSeaFreeFreeLst(CDrv *dv)
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{
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CFreeLst *tempf,*tempf1;
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Bool unlock;
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try {
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unlock=DrvLock(dv);
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if (tempf=dv->next_free) {
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while (tempf!=&dv->next_free) {
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tempf1=tempf->next;
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Free(tempf);
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tempf=tempf1;
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}
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}
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dv->next_free=NULL;
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if (unlock)
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DrvUnlock(dv);
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} catch
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if (unlock)
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DrvUnlock(dv);
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}
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U0 RedSeaFreeLstBuild(CDrv *dv)
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{
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Bool unlock;
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CFreeLst *tempf;
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I64 i,first=dv->data_area,max_blk=dv->size+dv->base_offset;
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try {
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unlock=DrvLock(dv);
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if (dv->next_free)
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RedSeaFreeFreeLst(dv);
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QueInit(&dv->next_free);
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while (first<max_blk) {
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i=0; //count free clusters
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while (first+i<max_blk) {
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DrvMapBlkSet(dv,first+i);
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if (Bt(dv->cur_map_blk,(first+i-dv->data_area)&(BLK_SIZE<<3-1)))
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break;
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else
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i++;
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}
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if (i) {
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tempf=AMAlloc(sizeof(CFreeLst));
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tempf->size=i;
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tempf->start=first;
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QueIns(tempf,dv->last_free);
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}
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first+=i+1;
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}
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if (unlock)
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DrvUnlock(dv);
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} catch
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if (unlock)
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DrvUnlock(dv);
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}
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U0 RedSeaDrvInit(CDrv *dv)
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{
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CRedSeaBoot br;
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Bool unlock;
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try {
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unlock=DrvLock(dv);
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RBlks(dv,&br,dv->base_offset,1);
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if (br.signature!=MBR_PT_REDSEA || br.signature2!=0xAA55)
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throw('Drv');
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dv->type=DVT_REDSEA;
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RedSeaFreeFreeLst(dv);
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dv->spc=1;
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dv->size=br.sects;
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dv->data_area=dv->base_offset+br.bitmap_sects;
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dv->root_cluster=br.root_cluster;
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dv->map1=dv->map2=dv->base_offset+1;
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DrvMapBlkAlloc(dv);
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if (unlock)
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DrvUnlock(dv);
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} catch
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if (unlock)
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DrvUnlock(dv);
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}
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Bool RedSeaDrvValidate(U8 drv_let)
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{
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CDrv *dv;
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CRedSeaBoot br;
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Bool result=FALSE;
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try {
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dv=Let2Drv(drv_let);
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if (dv->type==DVT_REDSEA && RBlks(dv,&br,dv->base_offset,1) &&
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br.signature==MBR_PT_REDSEA && br.signature2==0xAA55 &&
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br.sects==dv->size)
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result=TRUE;
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} catch
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Fs->catch_except=TRUE;
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return result;
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}
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U0 RedSeaFmt(U8 drv_let,Bool quick=TRUE)
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{
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U8 *root_dir;
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CDirEntry *d_native;
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CRedSeaBoot *br=CAlloc(BLK_SIZE);
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CDrv *dv=Let2Drv(drv_let);
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I64 i,n;
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try {
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DrvLock(dv);
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// DrvTypeSet(drv_let,DVT_REDSEA);
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DrvTypeSet(drv_let,DVT_FAT32);
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dv->type=DVT_REDSEA;
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br->signature=MBR_PT_REDSEA;
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br->signature2=0xAA55;
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br->base_offset=dv->base_offset; //For CD/DVD image copy.
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br->sects=dv->size;
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n=(br->sects+BLK_SIZE<<3-1)/BLK_SIZE<<3;
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br->bitmap_sects=n;
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br->unique_id=GetTSC^Now()(U64);
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br->root_cluster=0;
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if (quick)
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i=n+1;
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else
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i=dv->size;
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WZeroBlks(dv,dv->base_offset,i);
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WBlks(dv,br,dv->base_offset,1);
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RedSeaDrvInit(dv);
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ClustersAlloc(dv,0,1,FALSE); //Alloc #1
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br->root_cluster=ClustersAlloc(dv,0,1,FALSE);
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WBlks(dv,br,dv->base_offset,1);
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root_dir=CAlloc(BLK_SIZE);
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d_native=root_dir-offset(CDirEntry.start);
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d_native->attr=RS_ATTR_DIR|RS_ATTR_CONTIGUOUS;
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*d_native->name='.';
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d_native->cluster=br->root_cluster;
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d_native->size=BLK_SIZE;
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d_native->datetime=Now;
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d_native(U8 *)+=CDIR_SIZE;
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*d_native->name='.';
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d_native->name[1]='.';
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d_native->attr=RS_ATTR_DIR|RS_ATTR_CONTIGUOUS;
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d_native->cluster=br->root_cluster;
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d_native->datetime=Now;
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WBlks(dv,root_dir,br->root_cluster,1);
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RedSeaDrvInit(dv);
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DrvUnlock(dv);
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} catch
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DrvUnlock(dv);
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Free(br);
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Free(root_dir);
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}
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Bool RedSeaFileFind(CDrv *dv,I64 cur_dir_cluster,U8 *name,CDirEntry *_result,I64 fuf_flags=0)
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{//$LK,"FUF_JUST_DIRS",A="MN:FUF_JUST_DIRS"$, $LK,"FUF_JUST_FILES",A="MN:FUF_JUST_FILES"$
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CDirEntry *buf,*buf2,*ptr;
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U8 dname[CDIR_FILENAME_LEN];
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I64 ch;
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Bool result=FALSE,unlock;
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if (fuf_flags&~FUG_FILE_FIND)
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throw('FUF');
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MemSet(_result,0,sizeof(CDirEntry));
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DrvChk(dv);
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if (dv->type!=DVT_REDSEA)
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PrintErr("Not RedSea Drv\n");
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else if (!CFileNameTo(dname,name))
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PrintErr("Invalid FileName.\n");
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else
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try {
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unlock=DrvLock(dv);
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buf2=MAlloc(BLK_SIZE);
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RBlks(dv,buf2,cur_dir_cluster,1);
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ptr=buf2(U8 *)-offset(CDirEntry.start);
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buf=MAlloc(ptr->size);
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RBlks(dv,buf,cur_dir_cluster,ptr->size>>BLK_SIZE_BITS);
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Free(buf2);
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ptr=buf(U8 *)-offset(CDirEntry.start);
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*ptr->name='.';
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ptr->name[1]=0;
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while (TRUE) {
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if (!(ch=*ptr->name))
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break;
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else if (!(ptr->attr & RS_ATTR_DELETED) &&
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!(fuf_flags&FUF_JUST_DIRS && !(ptr->attr & RS_ATTR_DIR)) &&
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!(fuf_flags&FUF_JUST_FILES && ptr->attr & RS_ATTR_DIR) &&
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!StrCmp(dname,ptr->name)) {
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MemCpy(&_result->attr,&ptr->attr,CDIR_SIZE);
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result=TRUE;
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goto rsff_done;
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}
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ptr(U8 *)+=CDIR_SIZE;
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}
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rsff_done:
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Free(buf);
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if (unlock)
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DrvUnlock(dv);
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} catch
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if (unlock)
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DrvUnlock(dv);
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return result;
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}
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U8 *RedSeaFileRead(CDrv *dv,U8 *cur_dir,U8 *filename,I64 *_size,I64 *_attr)
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{
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U8 *buf=NULL;
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CDirEntry de;
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I64 c,blk_cnt,cur_dir_cluster;
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DrvChk(dv);
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*_size=0;
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*_attr=0;
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if (dv->type!=DVT_REDSEA)
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PrintErr("Not RedSea Drv\n");
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else
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try {
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DrvLock(dv);
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cur_dir_cluster=Name2DirCluster(dv,cur_dir);
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if (RedSeaFileFind(dv,cur_dir_cluster,filename,&de,FUF_JUST_FILES)) {
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blk_cnt=(de.size+BLK_SIZE-1)>>BLK_SIZE_BITS;
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buf=MAlloc(blk_cnt<<BLK_SIZE_BITS+1);
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c=de.cluster;
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c=RBlks(dv,buf,c,blk_cnt);
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buf[de.size]=0; //Terminate
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*_size=de.size;
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*_attr=FileAttr(de.name,de.attr);
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}
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DrvUnlock(dv);
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} catch
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DrvUnlock(dv);
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return buf;
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}
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Bool RedSeaCd(U8 *name,I64 cur_dir_cluster)
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{
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CDirEntry de;
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if (Fs->cur_dv->type!=DVT_REDSEA)
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PrintErr("Not RedSea Drv\n");
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else if (RedSeaFileFind(Fs->cur_dv,cur_dir_cluster,name,&de,FUF_JUST_DIRS))
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return TRUE;
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else {
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"%s ",name;
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PrintErr("File not found.\n");
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}
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return FALSE;
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}
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U0 RedSeaFreeClusters(CDrv *dv,I64 c,I64 cnt)
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{
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CFreeLst *tempf;
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Bool found=FALSE,unlock,unlock_break;
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DrvChk(dv);
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if (!c) return;
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if (dv->type!=DVT_REDSEA)
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PrintErr("Not RedSea Drv\n");
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else
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try {
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unlock_break=BreakLock;
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unlock=DrvLock(dv);
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if (!dv->next_free)
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RedSeaFreeLstBuild(dv);
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tempf=dv->next_free;
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while (!found && tempf!=&dv->next_free) {
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if (tempf->start+tempf->size==c) {
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tempf->size+=cnt;
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found=TRUE;
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} else if (c+cnt==tempf->start) {
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tempf->size+=cnt;
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tempf->start=c;
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found=TRUE;
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}
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tempf=tempf->next;
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}
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if (!found) {
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tempf=AMAlloc(sizeof(CFreeLst));
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tempf->size=cnt;
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tempf->start=c;
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QueIns(tempf,dv->last_free);
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}
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while (cnt-->0) {
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DrvMapBlkSet(dv,c);
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LBtr(dv->cur_map_blk,(c-dv->data_area)&(BLK_SIZE<<3-1));
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LBts(&dv->map_blk_dirty,0);
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c++;
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}
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DrvMapBlkClean(dv);
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if (unlock)
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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} catch {
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if (unlock)
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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}
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}
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I64 RedSeaAllocClusters(CDrv *dv,I64 cnt)
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{
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CFreeLst *tempf,*best_free=NULL;
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I64 i,first,best_size=MAX_I64;
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Bool unlock,unlock_break;
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if (cnt<=0)
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throw('Drv');
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try {
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unlock_break=BreakLock;
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unlock=DrvLock(dv);
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if (!dv->next_free)
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RedSeaFreeLstBuild(dv);
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tempf=dv->next_free;
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while (tempf!=&dv->next_free) {
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if (tempf->size>=cnt && tempf->size<best_size) {
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best_free=tempf;
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best_size=tempf->size;
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if (tempf->size==cnt)
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break;
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}
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tempf=tempf->next;
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}
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if (!best_free)
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throw('Drv');
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first=best_free->start;
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for (i=0;i<cnt;i++) {
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DrvMapBlkSet(dv,first+i);
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LBts(dv->cur_map_blk,(first+i-dv->data_area)&(BLK_SIZE<<3-1));
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LBts(&dv->map_blk_dirty,0);
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}
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DrvMapBlkClean(dv);
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if (best_free->size-=cnt)
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best_free->start+=cnt;
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else {
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QueRem(best_free);
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Free(best_free);
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}
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if (unlock)
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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} catch {
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if (unlock)
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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}
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return first;
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}
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Bool RedSeaDirNew(CDrv *dv,U8 *cur_dir,CDirEntry *de,Bool free_old_chain)
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{
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CDirEntry *buf,*buf2,*ptr,de2;
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CRedSeaBoot *br;
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I64 c,ch,i=1,j=0,n=BLK_SIZE/CDIR_SIZE,dir_size,cur_dir_cluster;
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Bool written=FALSE,unlock,unlock_break;
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U8 *temp,*parent_dir;
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try {
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unlock_break=BreakLock;
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de->attr|=RS_ATTR_CONTIGUOUS;
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unlock=DrvLock(dv);
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cur_dir_cluster=Name2DirCluster(dv,cur_dir);
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buf2=MAlloc(BLK_SIZE);
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RBlks(dv,buf2,cur_dir_cluster,1);
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ptr=buf2(U8 *)-offset(CDirEntry.start);
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buf=MAlloc(ptr->size);
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RBlks(dv,buf,cur_dir_cluster,ptr->size>>BLK_SIZE_BITS);
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dir_size=ptr->size;
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ptr=buf(U8 *)-offset(CDirEntry.start)+CDIR_SIZE;
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Free(buf2);
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while (TRUE) {
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if (!(ch=*ptr->name)) {
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if (!written)
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MemCpy(&ptr->start,&de->start,CDIR_SIZE);
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if ((i+1)*CDIR_SIZE+j<<BLK_SIZE_BITS<dir_size)
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WBlks(dv,buf(U8 *)+j<<BLK_SIZE_BITS,cur_dir_cluster+j,1);
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else {
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buf2=CAlloc(dir_size+BLK_SIZE);
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MemCpy(buf2,buf,dir_size);
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RedSeaFreeClusters(dv,cur_dir_cluster,dir_size>>BLK_SIZE_BITS);
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dir_size+=BLK_SIZE;
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c=ClustersAlloc(dv,0,dir_size>>BLK_SIZE_BITS,TRUE);
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Free(buf);
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buf=buf2;
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ptr=buf(U8 *)-offset(CDirEntry.start);
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ptr->size=dir_size;
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ptr->cluster=c;
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WBlks(dv,buf,c,dir_size>>BLK_SIZE_BITS);
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if (cur_dir_cluster==dv->root_cluster) {
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br=CAlloc(BLK_SIZE);
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RBlks(dv,br,dv->base_offset,1);
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br->root_cluster=c;
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WBlks(dv,br,dv->base_offset,1);
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Free(br);
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dv->root_cluster=c;
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} else {
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temp=StrNew(cur_dir);
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parent_dir=StrNew(cur_dir);
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StrLastRem(parent_dir,"/",temp);
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if (!*parent_dir) {
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Free(parent_dir);
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parent_dir=StrNew("/");
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}
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if (RedSeaFileFind(dv,Name2DirCluster(dv,parent_dir),
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temp,&de2,FUF_JUST_DIRS)) {
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de2.cluster=c;
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de2.size=dir_size;
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RedSeaDirNew(dv,parent_dir,&de2,FALSE);
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} else
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throw('Drv');
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Free(temp);
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Free(parent_dir);
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}
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}
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break;
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} else if (ptr->attr & RS_ATTR_DELETED) {
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if (!written) {
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MemCpy(&ptr->start,&de->start,CDIR_SIZE);
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WBlks(dv,buf(U8 *)+j<<BLK_SIZE_BITS,cur_dir_cluster+j,1);
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written=TRUE;
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}
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} else {
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if (!StrCmp(de->name,ptr->name)) {
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if (free_old_chain)
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RedSeaFreeClusters(dv,ptr->cluster,
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(ptr->size+BLK_SIZE-1)>>BLK_SIZE_BITS);
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if (!written)
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MemCpy(&ptr->start,&de->start,CDIR_SIZE);
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else
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ptr->attr|=RS_ATTR_DELETED;
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WBlks(dv,buf(U8 *)+j<<BLK_SIZE_BITS,cur_dir_cluster+j,1);
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break;
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}
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}
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ptr(U8 *)+=CDIR_SIZE;
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if (++i>=n) {
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j++;
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i=0;
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}
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}
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Free(buf);
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if (unlock)
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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} catch {
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if (unlock)
|
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DrvUnlock(dv);
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if (unlock_break)
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BreakUnlock;
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}
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return FALSE;
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}
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|
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I64 RedSeaFilesDel(CDrv *dv,U8 *cur_dir,U8 *files_find_mask,I64 fuf_flags,
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Bool del_dir,Bool print_msg)
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{
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CDirEntry *buf,*buf2,*ptr;
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I64 i=0,result=0,ch,j=0,n=BLK_SIZE/CDIR_SIZE,cur_dir_cluster;
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Bool unlock_break;
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try {
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unlock_break=BreakLock;
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DrvLock(dv);
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cur_dir_cluster=Name2DirCluster(dv,cur_dir);
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buf2=MAlloc(BLK_SIZE);
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RBlks(dv,buf2,cur_dir_cluster,1);
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ptr=buf2(U8 *)-offset(CDirEntry.start);
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buf=MAlloc(ptr->size);
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RBlks(dv,buf,cur_dir_cluster,ptr->size>>BLK_SIZE_BITS);
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Free(buf2);
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ptr=buf(U8 *)-offset(CDirEntry.start);
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*ptr->name='.';
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ptr->name[1]=0;
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while (TRUE) {
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if (!(ch=*ptr->name))
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break;
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else if (!(ptr->attr & RS_ATTR_DELETED) && ch!='.' && (del_dir ||
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!(ptr->attr & RS_ATTR_DIR)) &&
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FilesFindMatch(ptr->name,files_find_mask,fuf_flags)) {
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if (!(ptr->attr & RS_ATTR_DIR)) result++;
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if (print_msg)
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"Del %s\n",ptr->name;
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ptr->attr|=RS_ATTR_DELETED;
|
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WBlks(dv,buf(U8 *)+j<<BLK_SIZE_BITS,cur_dir_cluster+j,1);
|
|
RedSeaFreeClusters(dv,ptr->cluster,(ptr->size+BLK_SIZE-1)>>BLK_SIZE_BITS);
|
|
}
|
|
ptr(U8 *)+=CDIR_SIZE;
|
|
if (++i>=n) {
|
|
j++;
|
|
i=0;
|
|
}
|
|
}
|
|
Free(buf);
|
|
DrvUnlock(dv);
|
|
if (unlock_break)
|
|
BreakUnlock;
|
|
} catch {
|
|
DrvUnlock(dv);
|
|
if (unlock_break)
|
|
BreakUnlock;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
I64 RedSeaFileWrite(CDrv *dv,U8 *cur_dir,U8 *name,U8 *buf,I64 size,
|
|
CDate cdt,I64 attr)
|
|
{
|
|
CDirEntry de;
|
|
I64 c=0,blk_cnt;
|
|
MemSet(&de,0,sizeof(CDirEntry));
|
|
if (size<0) size=0;
|
|
if (dv->type!=DVT_REDSEA)
|
|
PrintErr("Not RedSea Drv\n");
|
|
else if (!CFileNameTo(de.name,name))
|
|
PrintErr("Invalid FileName.\n");
|
|
else {
|
|
RedSeaFilesDel(dv,cur_dir,de.name,0,FALSE,FALSE);
|
|
de.size=size;
|
|
if (blk_cnt=(size+BLK_SIZE-1)>>BLK_SIZE_BITS)
|
|
c=ClustersAlloc(dv,0,blk_cnt,TRUE); //Always contiguous
|
|
else
|
|
c=INVALID_CLUSTER;
|
|
de.cluster=c;
|
|
de.attr=attr|RS_ATTR_CONTIGUOUS;
|
|
de.datetime=cdt;
|
|
if (blk_cnt)
|
|
WBlks(dv,buf,c,blk_cnt);
|
|
RedSeaDirNew(dv,cur_dir,&de,TRUE);
|
|
}
|
|
return c;
|
|
}
|
|
|
|
CDirEntry *RedSeaFilesFind(U8 *files_find_mask,I64 fuf_flags,CDirEntry *parent=NULL)
|
|
{
|
|
CDrv *dv=Fs->cur_dv;
|
|
CDirEntry *buf,*buf2,*ptr,*result=NULL,*tempde;
|
|
I64 ch,cur_dir_cluster;
|
|
if (fuf_flags&~FUG_FILES_FIND)
|
|
throw('FUF');
|
|
try {
|
|
DrvLock(dv);
|
|
cur_dir_cluster=Name2DirCluster(dv,Fs->cur_dir);
|
|
buf2=MAlloc(BLK_SIZE);
|
|
RBlks(dv,buf2,cur_dir_cluster,1);
|
|
|
|
ptr=buf2(U8 *)-offset(CDirEntry.start);
|
|
buf=MAlloc(ptr->size);
|
|
RBlks(dv,buf,cur_dir_cluster,ptr->size>>BLK_SIZE_BITS);
|
|
Free(buf2);
|
|
|
|
ptr=buf(U8 *)-offset(CDirEntry.start);
|
|
*ptr->name='.';
|
|
ptr->name[1]=0;
|
|
ptr(U8 *)+=CDIR_SIZE;
|
|
ptr->cluster=Name2ParentDirCluster(dv,Fs->cur_dir);
|
|
ptr(U8 *)-=CDIR_SIZE;
|
|
while (TRUE) {
|
|
if (!(ch=*ptr->name))
|
|
break;
|
|
else if (!(ptr->attr & RS_ATTR_DELETED)) {
|
|
tempde=CAlloc(sizeof(CDirEntry));
|
|
MemCpy(&tempde->start,&ptr->start,CDIR_SIZE);
|
|
tempde->parent=parent;
|
|
if (Bt(&fuf_flags,FUf_RECURSE) && tempde->attr&RS_ATTR_DIR && *tempde->name!='.') {
|
|
tempde->next=result;
|
|
result=tempde;
|
|
tempde->full_name=DirNameAbs(tempde->name);
|
|
DrvUnlock(dv);
|
|
if (Cd(tempde->name)) {
|
|
tempde->sub=RedSeaFilesFind(files_find_mask,fuf_flags,tempde);
|
|
Cd("..");
|
|
}
|
|
DrvLock(dv);
|
|
} else if ((tempde->attr&RS_ATTR_DIR || !Bt(&fuf_flags,FUf_JUST_DIRS)) &&
|
|
!(Bt(&fuf_flags,FUf_RECURSE) && *tempde->name=='.' && tempde->attr&RS_ATTR_DIR) &&
|
|
FilesFindMatch(tempde->name,files_find_mask,fuf_flags)) {
|
|
tempde->next=result;
|
|
result=tempde;
|
|
tempde->full_name=FileNameAbs(tempde->name);
|
|
} else
|
|
DirEntryDel(tempde);
|
|
}
|
|
ptr(U8 *)+=CDIR_SIZE;
|
|
}
|
|
Free(buf);
|
|
DrvUnlock(dv);
|
|
} catch
|
|
DrvUnlock(dv);
|
|
return result;
|
|
}
|
|
|
|
Bool RedSeaMkDir(CDrv *dv,U8 *cur_dir,U8 *name)
|
|
{
|
|
I64 size=BLK_SIZE,c,cur_dir_cluster=Name2DirCluster(dv,cur_dir);
|
|
U8 *buf=CAlloc(size);
|
|
CDirEntry *d_native=buf-offset(CDirEntry.start);
|
|
Bool unlock_break;
|
|
|
|
try {
|
|
unlock_break=BreakLock;
|
|
c=FileWrite(name,buf,size,0,RS_ATTR_DIR);
|
|
d_native->attr=RS_ATTR_DIR|RS_ATTR_CONTIGUOUS;
|
|
StrCpy(d_native->name,name);
|
|
d_native->cluster=c;
|
|
d_native->size=size;
|
|
d_native->datetime=Now;
|
|
d_native(U8 *)+=CDIR_SIZE;
|
|
|
|
d_native->attr=RS_ATTR_DIR|RS_ATTR_CONTIGUOUS;
|
|
*d_native->name='.';
|
|
d_native->name[1]='.';
|
|
d_native->name[2]=0;
|
|
d_native->cluster=cur_dir_cluster;
|
|
d_native->size=0;
|
|
d_native->datetime=Now;
|
|
WBlks(dv,buf,c,1);
|
|
Free(buf);
|
|
if (unlock_break)
|
|
BreakUnlock;
|
|
} catch
|
|
if (unlock_break)
|
|
BreakUnlock;
|
|
return TRUE;
|
|
}
|