9660srv: import from Plan 9

src/cmd/9660srv/iso9660.h

@@ -0,0 +1,142 @@
+#define	VOLDESC	16	/* sector number */
+
+/*
+ * L means little-endian, M means big-endian, and LM means little-endian
+ * then again big-endian.
+ */
+typedef uchar		Byte2L[2];
+typedef uchar		Byte2M[2];
+typedef uchar		Byte4LM[4];
+typedef uchar		Byte4L[4];
+typedef uchar		Byte4M[4];
+typedef uchar		Byte8LM[8];
+typedef union Drec	Drec;
+typedef union Voldesc	Voldesc;
+
+enum
+{
+	Boot		= 0,
+	Primary		= 1,
+	Supplementary	= 2,
+	Partition	= 3,
+	Terminator	= 255
+};
+
+union	Voldesc
+{			/* volume descriptor */
+	uchar	byte[Sectorsize];
+	union {			/* for CD001, the ECMA standard */
+		struct
+		{
+			uchar	type;
+			uchar	stdid[5];
+			uchar	version;
+			uchar	unused;
+			uchar	sysid[32];
+			uchar	bootid[32];
+			uchar	data[1977];
+		} boot;
+		struct
+		{
+			uchar	type;
+			uchar	stdid[5];
+			uchar	version;
+			uchar	flags;
+			uchar	sysid[32];
+			uchar	volid[32];
+			Byte8LM	partloc;
+			Byte8LM	size;
+			uchar	escapes[32];
+			Byte4LM	vsetsize;
+			Byte4LM	vseqno;
+			Byte4LM	blksize;
+			Byte8LM	ptabsize;
+			Byte4L	lptable;
+			Byte4L	optlptable;
+			Byte4M	mptable;
+			Byte4M	optmptable;
+			uchar	rootdir[34];
+			uchar	volsetid[128];
+			uchar	pubid[128];
+			uchar	prepid[128];
+			uchar	appid[128];
+			uchar	copyright[37];
+			uchar	abstract[37];
+			uchar	bibliography[37];
+			uchar	cdate[17];
+			uchar	mdate[17];
+			uchar	expdate[17];
+			uchar	effdate[17];
+			uchar	fsversion;
+			uchar	unused3[1];
+			uchar	appuse[512];
+			uchar	unused4[653];
+		} desc;
+	} z;
+	union
+	{			/* for CDROM, the `High Sierra' standard */
+		struct
+		{
+			Byte8LM	number;
+			uchar	type;
+			uchar	stdid[5];
+			uchar	version;
+			uchar	flags;
+			uchar	sysid[32];
+			uchar	volid[32];
+			Byte8LM	partloc;
+			Byte8LM	size;
+			uchar	escapes[32];
+			Byte4LM	vsetsize;
+			Byte4LM	vseqno;
+			Byte4LM	blksize;
+			uchar	quux[40];
+			uchar	rootdir[34];
+			uchar	volsetid[128];
+			uchar	pubid[128];
+			uchar	prepid[128];
+			uchar	appid[128];
+			uchar	copyright[32];
+			uchar	abstract[32];
+			uchar	cdate[16];
+			uchar	mdate[16];
+			uchar	expdate[16];
+			uchar	effdate[16];
+			uchar	fsversion;
+		} desc;
+	} r;
+};
+
+union	Drec
+{
+	struct
+	{
+		uchar	reclen;
+		uchar	attrlen;
+		Byte8LM	addr;
+		Byte8LM	size;
+		uchar	date[6];
+		uchar	tzone;		/* flags in high sierra */
+		uchar	flags;		/* ? in high sierra */
+		uchar	unitsize;	/* ? in high sierra */
+		uchar	gapsize;	/* ? in high sierra */
+		Byte4LM	vseqno;		/* ? in high sierra */
+		uchar	namelen;
+		uchar	name[1];
+	};
+	struct
+	{
+		uchar	r_pad[24];
+		uchar	r_flags;
+	};
+};
+
+struct	Isofile
+{
+	short	fmt;		/* 'z' if iso, 'r' if high sierra */
+	short	blksize;
+	long	offset;		/* true offset when reading directory */
+	long odelta;	/* true size of directory just read */
+	long	doffset;	/* plan9 offset when reading directory */
+	Drec	d;
+};