Index: uspace/lib/label/include/std/fat.h
===================================================================
--- uspace/lib/label/include/std/fat.h	(revision 89e2aac331337c511818ea5fcfec2682e9fa2c71)
+++ uspace/lib/label/include/std/fat.h	(revision 89e2aac331337c511818ea5fcfec2682e9fa2c71)
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2008 Jakub Jermar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup fs
+ * @{
+ */
+
+#ifndef FAT_FAT_H_
+#define FAT_FAT_H_
+
+#include <stdint.h>
+
+#define BS_BLOCK		0
+#define BS_SIZE			512
+#define DIRENT_SIZE		32
+
+#define FAT12_CLST_MAX    4085
+#define FAT16_CLST_MAX    65525
+
+#define FATAUTO	0
+#define FAT12	12
+#define FAT16	16
+#define FAT32	32
+
+#define FAT_CLUSTER_DOUBLE_SIZE(a) ((a) / 4)
+
+typedef struct fat_bs {
+	uint8_t		ji[3];		/**< Jump instruction. */
+	uint8_t		oem_name[8];
+	/* BIOS Parameter Block */
+	uint16_t	bps;		/**< Bytes per sector. */
+	uint8_t		spc;		/**< Sectors per cluster. */
+	uint16_t	rscnt;		/**< Reserved sector count. */
+	uint8_t		fatcnt;		/**< Number of FATs. */
+	uint16_t	root_ent_max;	/**< Maximum number of root directory
+					     entries. */
+	uint16_t	totsec16;	/**< Total sectors. 16-bit version. */
+	uint8_t		mdesc;		/**< Media descriptor. */
+	uint16_t	sec_per_fat;	/**< Sectors per FAT12/FAT16. */
+	uint16_t	sec_per_track;	/**< Sectors per track. */
+	uint16_t	headcnt;	/**< Number of heads. */
+	uint32_t	hidden_sec;	/**< Hidden sectors. */
+	uint32_t	totsec32;	/**< Total sectors. 32-bit version. */
+
+	union {
+		struct {
+			/* FAT12/FAT16 only: Extended BIOS Parameter Block */
+			/** Physical drive number. */
+			uint8_t		pdn;
+			uint8_t		reserved;
+			/** Extended boot signature. */
+			uint8_t		ebs;
+			/** Serial number. */
+			uint32_t	id;
+			/** Volume label. */
+			uint8_t		label[11];
+			/** FAT type. */
+			uint8_t		type[8];
+			/** Boot code. */
+			uint8_t		boot_code[448];
+			/** Boot sector signature. */
+			uint16_t	signature;
+		} __attribute__ ((packed));
+		struct {
+			/* FAT32 only */
+			/** Sectors per FAT. */
+			uint32_t	sectors_per_fat;
+			/** FAT flags. */
+			uint16_t	flags;
+			/** Version. */
+			uint16_t	version;
+			/** Cluster number of root directory. */
+			uint32_t	root_cluster;
+			/** Sector number of file system information sector. */
+			uint16_t	fsinfo_sec;
+			/** Sector number of boot sector copy. */
+			uint16_t	bscopy_sec;
+			uint8_t		reserved1[12];
+			/** Physical drive number. */
+			uint8_t		pdn;
+			uint8_t		reserved2;
+			/** Extended boot signature. */
+			uint8_t		ebs;
+			/** Serial number. */
+			uint32_t	id;
+			/** Volume label. */
+			uint8_t		label[11];
+			/** FAT type. */
+			uint8_t		type[8];
+			/** Boot code. */
+			uint8_t		boot_code[420];
+			/** Signature. */
+			uint16_t	signature;
+		} fat32 __attribute__ ((packed));
+	};
+} __attribute__ ((packed)) fat_bs_t;
+
+#endif
+
+/**
+ * @}
+ */