1066 		if (disk_write(fs->pdrv, fs->win, fs->winsect, 1) == RES_OK) {	/* Write it back into the volume */  in sync_window()
1069 …if (fs->n_fats == 2) disk_write(fs->pdrv, fs->win, fs->winsect + fs->fsize, 1);	/* Reflect it to 2…  in sync_window()
1093 			if (disk_read(fs->pdrv, fs->win, sect, 1) != RES_OK) {  in move_window()
1124 				memset(fs->win, 0, sizeof fs->win);  in sync_fs()
1125 				st_dword(fs->win + FSI_LeadSig, 0x41615252);		/* Leading signature */  in sync_fs()
1126 				st_dword(fs->win + FSI_StrucSig, 0x61417272);		/* Structure signature */  in sync_fs()
1127 				st_dword(fs->win + FSI_Free_Count, fs->free_clst);	/* Number of free clusters */  in sync_fs()
1128 				st_dword(fs->win + FSI_Nxt_Free, fs->last_clst);	/* Last allocated culuster */  in sync_fs()
1129 				st_dword(fs->win + FSI_TrailSig, 0xAA550000);		/* Trailing signature */  in sync_fs()
1130 …disk_write(fs->pdrv, fs->win, fs->winsect = fs->volbase + 1, 1);	/* Write it into the FSInfo secto…  in sync_fs()
1134 				if (disk_read(fs->pdrv, fs->win, fs->winsect = fs->volbase, 1) == RES_OK) {	/* Load VBR */  in sync_fs()
1137 					if (fs->win[BPB_PercInUseEx] != perc_inuse) {	/* Write it back into VBR if needed */  in sync_fs()
1138 						fs->win[BPB_PercInUseEx] = perc_inuse;  in sync_fs()
1139 						disk_write(fs->pdrv, fs->win, fs->winsect, 1);  in sync_fs()
1197 			wc = fs->win[bc++ % SS(fs)];		/* Get 1st byte of the entry */  in get_fat()
1199 			wc |= fs->win[bc % SS(fs)] << 8;	/* Merge 2nd byte of the entry */  in get_fat()
1205 			val = ld_word(fs->win + clst * 2 % SS(fs));		/* Simple WORD array */  in get_fat()
1210 …val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x0FFFFFFF;	/* Simple DWORD array but mask out upper…  in get_fat()
1231 						val = ld_dword(fs->win + clst * 4 % SS(fs)) & 0x7FFFFFFF;  in get_fat()
1272 			p = fs->win + bc++ % SS(fs);  in put_fat()
1277 			p = fs->win + bc % SS(fs);  in put_fat()
1285 			st_word(fs->win + clst * 2 % SS(fs), (WORD)val);	/* Simple WORD array */  in put_fat()
1296 				val = (val & 0x0FFFFFFF) | (ld_dword(fs->win + clst * 4 % SS(fs)) & 0xF0000000);  in put_fat()
1298 			st_dword(fs->win + clst * 4 % SS(fs), val);  in put_fat()
1339 				bv = fs->win[i] & bm; bm <<= 1;		/* Get bit value */  in find_bitmap()
1380 				if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR;	/* Is the bit expected value? */  in change_bitmap()
1381 				fs->win[i] ^= bm;	/* Flip the bit */  in change_bitmap()
1689 	memset(fs->win, 0, sizeof fs->win);	/* Clear window buffer */  in dir_clear()
1701 		ibuf = fs->win; szb = 1;	/* Use window buffer (many single-sector writes may take a time) */  in dir_clear()
1751 	dp->dir = fs->win + (ofs % SS(fs));	/* Pointer to the entry in the win[] */  in dir_sdi()
1811 	dp->dir = fs->win + ofs % SS(fs);	/* Pointer to the entry in the win[] */  in dir_next()
3145 				dp->obj.sclust = ld_clust(fs, fs->win + dp->dptr % SS(fs));	/* Open next directory */
3318 	sign = ld_word(fs->win + BS_55AA);
3320 …if (sign == 0xAA55 && !memcmp(fs->win + BS_JmpBoot, "\xEB\x76\x90" "EXFAT   ", 11)) return 1;	/* I…
3322 	b = fs->win[BS_JmpBoot];
3324 		if (sign == 0xAA55 && !memcmp(fs->win + BS_FilSysType32, "FAT32   ", 8)) {
3328 		w = ld_word(fs->win + BPB_BytsPerSec);
3329 		b = fs->win[BPB_SecPerClus];
3332 			&& ld_word(fs->win + BPB_RsvdSecCnt) != 0	/* Properness of number of reserved sectors (MNBZ) */
3333 			&& (UINT)fs->win[BPB_NumFATs] - 1 <= 1		/* Properness of number of FATs (1 or 2) */
3334 			&& ld_word(fs->win + BPB_RootEntCnt) != 0	/* Properness of root dir size (MNBZ) */
3335 …&& (ld_word(fs->win + BPB_TotSec16) >= 128 || ld_dword(fs->win + BPB_TotSec32) >= 0x10000)	/* Prop…
3336 			&& ld_word(fs->win + BPB_FATSz16) != 0) {	/* Properness of FAT size (MNBZ) */
3362 	if (fs->win[MBR_Table + PTE_System] == 0xEE) {	/* GPT protective MBR? */
3367 		if (!test_gpt_header(fs->win)) return 3;	/* Check if GPT header is valid */
3368 		n_ent = ld_dword(fs->win + GPTH_PtNum);		/* Number of entries */
3369 		pt_lba = ld_qword(fs->win + GPTH_PtOfs);	/* Table location */
3373 			if (!memcmp(fs->win + ofs + GPTE_PtGuid, GUID_MS_Basic, 16)) {	/* MS basic data partition? */
3375 				fmt = check_fs(fs, ld_qword(fs->win + ofs + GPTE_FstLba));	/* Load VBR and check status */
3385 		mbr_pt[i] = ld_dword(fs->win + MBR_Table + i * SZ_PTE + PTE_StLba);
3469 		for (i = BPB_ZeroedEx; i < BPB_ZeroedEx + 53 && fs->win[i] == 0; i++) ;	/* Check zero filler */
3472 …if (ld_word(fs->win + BPB_FSVerEx) != 0x100) return FR_NO_FILESYSTEM;	/* Check exFAT version (must…
3474 …if (1 << fs->win[BPB_BytsPerSecEx] != SS(fs)) {	/* (BPB_BytsPerSecEx must be equal to the physical…
3478 		maxlba = ld_qword(fs->win + BPB_TotSecEx) + bsect;	/* Last LBA of the volume + 1 */
3481 		fs->fsize = ld_dword(fs->win + BPB_FatSzEx);	/* Number of sectors per FAT */
3483 		fs->n_fats = fs->win[BPB_NumFATsEx];			/* Number of FATs */
3486 		fs->csize = 1 << fs->win[BPB_SecPerClusEx];		/* Cluster size */
3489 		nclst = ld_dword(fs->win + BPB_NumClusEx);		/* Number of clusters */
3495 		fs->database = bsect + ld_dword(fs->win + BPB_DataOfsEx);
3496 		fs->fatbase = bsect + ld_dword(fs->win + BPB_FatOfsEx);
3498 		fs->dirbase = ld_dword(fs->win + BPB_RootClusEx);
3508 			if (fs->win[i] == ET_BITMAP) break;			/* Is it a bitmap entry? */
3511 		bcl = ld_dword(fs->win + i + 20);				/* Bitmap cluster */
3516 			cv = ld_dword(fs->win + bcl % (SS(fs) / 4) * 4);
3529 …if (ld_word(fs->win + BPB_BytsPerSec) != SS(fs)) return FR_NO_FILESYSTEM;	/* (BPB_BytsPerSec must …
3531 		fasize = ld_word(fs->win + BPB_FATSz16);		/* Number of sectors per FAT */
3532 		if (fasize == 0) fasize = ld_dword(fs->win + BPB_FATSz32);
3535 		fs->n_fats = fs->win[BPB_NumFATs];				/* Number of FATs */
3539 		fs->csize = fs->win[BPB_SecPerClus];			/* Cluster size */
3542 		fs->n_rootdir = ld_word(fs->win + BPB_RootEntCnt);	/* Number of root directory entries */
3545 		tsect = ld_word(fs->win + BPB_TotSec16);		/* Number of sectors on the volume */
3546 		if (tsect == 0) tsect = ld_dword(fs->win + BPB_TotSec32);
3548 		nrsv = ld_word(fs->win + BPB_RsvdSecCnt);		/* Number of reserved sectors */
3568 …if (ld_word(fs->win + BPB_FSVer32) != 0) return FR_NO_FILESYSTEM;	/* (Must be FAT32 revision 0.0) …
3570 			fs->dirbase = ld_dword(fs->win + BPB_RootClus32);	/* Root directory start cluster */
3585 …&& ld_word(fs->win + BPB_FSInfo32) == 1	/* FAT32: Enable FSInfo feature only if FSInfo sector is n…
3589 			if (   ld_dword(fs->win + FSI_LeadSig) == 0x41615252	/* Load FSInfo data if available */
3590 				&& ld_dword(fs->win + FSI_StrucSig) == 0x61417272
3591 				&& ld_dword(fs->win + FSI_TrailSig) == 0xAA550000)
3594 				fs->free_clst = ld_dword(fs->win + FSI_Free_Count);
3597 				fs->last_clst = ld_dword(fs->win + FSI_Nxt_Free);
3984 					memcpy(rbuff + ((fs->winsect - sect) * SS(fs)), fs->win, SS(fs));
4012 		memcpy(rbuff, fs->win + fp->fptr % SS(fs), rcnt);	/* Extract partial sector */
4099 					memcpy(fs->win, wbuff + ((fs->winsect - sect) * SS(fs)), SS(fs));
4130 		memcpy(fs->win + fp->fptr % SS(fs), wbuff, wcnt);	/* Fit data to the sector */
4881 						for (b = 8, bm = ~fs->win[i]; b && clst; b--, clst--) {	/* Count clear bits in a byte */
4899 							if (ld_word(fs->win + i) == 0) nfree++;	/* FAT16: Is this cluster free? */
4902 							if ((ld_dword(fs->win + i) & 0x0FFFFFFF) == 0) nfree++;	/* FAT32: Is this cluster free? */
5104 						memset(fs->win + DIR_Name, ' ', 11);	/* Create "." entry */
5105 						fs->win[DIR_Name] = '.';
5106 						fs->win[DIR_Attr] = AM_DIR;
5107 						st_dword(fs->win + DIR_ModTime, tm);
5108 						st_clust(fs, fs->win, dcl);
5109 						memcpy(fs->win + SZDIRE, fs->win, SZDIRE);	/* Create ".." entry */
5110 						fs->win[SZDIRE + 1] = '.'; pcl = dj.obj.sclust;
5111 						st_clust(fs, fs->win + SZDIRE, pcl);
5229 								dir = fs->win + SZDIRE * 1;	/* Pointer to .. entry */
5444 				di = fs->win[BS_BootSig] == 0x29 ? BS_VolID : 0;
5446 			*vsn = di ? ld_dword(fs->win + di) : 0;	/* Get VSN in the VBR */
5719 		dbuf = fs->win;