45 static pc_cluster32_t pc_getcluster(struct pcfs *fsp, pc_cluster32_t cn);
63 	pc_cluster32_t cn, ncn;		/* current, next cluster number */  in pc_bmap()  local
114 		cn = ncn;  in pc_bmap()
115 		if (!pc_validcl(fsp, cn)) {  in pc_bmap()
116 			if (IS_FAT32(fsp) && cn >= PCF_LASTCLUSTER32 &&  in pc_bmap()
121 			    cn >= PCF_LASTCLUSTER &&  in pc_bmap()
127 				    "pc_bmap: badfs cn=%d\n", cn);  in pc_bmap()
132 		ncn = pc_getcluster(fsp, cn);  in pc_bmap()
141 	pcp->pc_lcluster = cn;  in pc_bmap()
142 	*dbnp = pc_cldaddr(fsp, cn);  in pc_bmap()
147 		while ((cn + 1) == ncn && count < *contigbp &&  in pc_bmap()
150 			cn = ncn;  in pc_bmap()
171 	pc_cluster32_t cn;	/* current cluster number */  in pc_balloc()  local
198 		switch (cn = pc_alloccluster(fsp, 1)) {  in pc_balloc()
204 		pcp->pc_scluster = cn;  in pc_balloc()
206 		cn = pcp->pc_scluster;  in pc_balloc()
207 		if (IS_FAT32(fsp) && cn == 0)  in pc_balloc()
208 			cn = fsp->pcfs_rdirstart;  in pc_balloc()
209 		if (!pc_validcl(fsp, cn)) {  in pc_balloc()
210 			PC_DPRINTF1(1, "pc_balloc: badfs cn=%d\n", cn);  in pc_balloc()
218 		cn = pcp->pc_lcluster;  in pc_balloc()
221 		ncn = pc_getcluster(fsp, cn);  in pc_balloc()
233 			pc_setcluster(fsp, cn, ncn);  in pc_balloc()
240 		cn = ncn;  in pc_balloc()
247 	*dbnp = pc_cldaddr(fsp, cn);  in pc_balloc()
259 	pc_cluster32_t cn;  in pc_bfree()  local
283 	cn = pcp->pc_scluster;  in pc_bfree()
284 	if (IS_FAT32(fsp) && cn == 0)  in pc_bfree()
285 		cn = fsp->pcfs_rdirstart;  in pc_bfree()
298 		if (!pc_validcl(fsp, cn)) {  in pc_bfree()
299 			PC_DPRINTF1(1, "pc_bfree: badfs cn=%d\n", cn);  in pc_bfree()
303 		ncn = pc_getcluster(fsp, cn);  in pc_bfree()
305 			pc_setcluster(fsp, cn, PCF_FREECLUSTER);  in pc_bfree()
310 					pc_setcluster(fsp, cn,  in pc_bfree()
313 					pc_setcluster(fsp, cn,  in pc_bfree()
323 		cn = ncn;  in pc_bfree()
334 	pc_cluster32_t cn;  in pc_freeclusters()  local
344 	for (cn = PCF_FIRSTCLUSTER; pc_validcl(fsp, cn); cn++) {  in pc_freeclusters()
345 		if (pc_getcluster(fsp, cn) == PCF_FREECLUSTER) {  in pc_freeclusters()
367 pc_getcluster(struct pcfs *fsp, pc_cluster32_t cn)  in pc_getcluster()  argument
371 	if (fsp->pcfs_fatp == NULL || !pc_validcl(fsp, cn))  in pc_getcluster()
376 		fp = fsp->pcfs_fatp + (cn << 2);  in pc_getcluster()
378 		cn = ltohi(*(pc_cluster32_t *)fp) & 0x0FFFFFFF;  in pc_getcluster()
381 		fp = fsp->pcfs_fatp + (cn << 1);  in pc_getcluster()
382 		cn = ltohs(*(pc_cluster16_t *)fp);  in pc_getcluster()
385 		fp = fsp->pcfs_fatp + (cn + (cn >> 1));  in pc_getcluster()
386 		if (cn & 01) {  in pc_getcluster()
387 			cn = (((unsigned int)*fp++ & 0xf0) >> 4);  in pc_getcluster()
388 			cn += (*fp << 4);  in pc_getcluster()
390 			cn = *fp++;  in pc_getcluster()
391 			cn += ((*fp & 0x0f) << 8);  in pc_getcluster()
393 		if (cn >= PCF_12BCLUSTER)  in pc_getcluster()
394 			cn |= PCF_RESCLUSTER;  in pc_getcluster()
398 		cn = PCF_ERRORCLUSTER;  in pc_getcluster()
400 	return (cn);  in pc_getcluster()
409 pc_setcluster(struct pcfs *fsp, pc_cluster32_t cn, pc_cluster32_t ncn)  in pc_setcluster()  argument
415 	if (fsp->pcfs_fatp == NULL || !pc_validcl(fsp, cn))  in pc_setcluster()
418 	pc_mark_fat_updated(fsp, cn);  in pc_setcluster()
421 		fp = fsp->pcfs_fatp + (cn << 2);  in pc_setcluster()
428 		fp = fsp->pcfs_fatp + (cn << 1);  in pc_setcluster()
433 		fp = fsp->pcfs_fatp + (cn + (cn >> 1));  in pc_setcluster()
434 		if (cn & 01) {  in pc_setcluster()
464 	pc_cluster32_t cn;  in pc_alloccluster()  local
470 	for (cn = fsp->pcfs_nxfrecls; pc_validcl(fsp, cn); cn++) {  in pc_alloccluster()
471 		if (pc_getcluster(fsp, cn) == PCF_FREECLUSTER) {  in pc_alloccluster()
475 				pc_setcluster(fsp, cn, PCF_LASTCLUSTERMARK32);  in pc_alloccluster()
480 				pc_setcluster(fsp, cn, PCF_LASTCLUSTERMARK);  in pc_alloccluster()
488 				bp->b_blkno = pc_cldaddr(fsp, cn);  in pc_alloccluster()
498 			fsp->pcfs_nxfrecls = cn + 1;  in pc_alloccluster()
499 			return (cn);  in pc_alloccluster()