From 78a779a3834cf39d7c0bcd93a15824b29df947a3 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Sun, 20 Jul 2008 03:23:19 -0400
Subject: 9660srv: import from Plan 9

---
 src/cmd/9660srv/dat.h | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/cmd/9660srv/dat.h

(limited to 'src/cmd/9660srv/dat.h')

diff --git a/src/cmd/9660srv/dat.h b/src/cmd/9660srv/dat.h
new file mode 100644
index 00000000..bee14db6
--- /dev/null
+++ b/src/cmd/9660srv/dat.h
@@ -0,0 +1,118 @@
+typedef	struct Ioclust	Ioclust;
+typedef	struct Iobuf	Iobuf;
+typedef	struct Isofile	Isofile;
+typedef struct Xdata	Xdata;
+typedef struct Xfile	Xfile;
+typedef struct Xfs	Xfs;
+typedef struct Xfsub	Xfsub;
+
+#pragma incomplete Isofile
+
+enum
+{
+	Sectorsize = 2048,
+	Maxname = 256,
+};
+
+struct Iobuf
+{
+	Ioclust* clust;
+	long	addr;
+	uchar*	iobuf;
+};
+
+struct Ioclust
+{
+	long	addr;			/* in sectors; good to 8TB */
+	Xdata*	dev;
+	Ioclust* next;
+	Ioclust* prev;
+	int	busy;
+	int	nbuf;
+	Iobuf*	buf;
+	uchar*	iobuf;
+};
+
+struct Xdata
+{
+	Xdata*	next;
+	char*	name;		/* of underlying file */
+	Qid	qid;
+	short	type;
+	short	fdev;
+	int	ref;		/* attach count */
+	int	dev;		/* for read/write */
+};
+
+struct Xfsub
+{
+	void	(*reset)(void);
+	int	(*attach)(Xfile*);
+	void	(*clone)(Xfile*, Xfile*);
+	void	(*walkup)(Xfile*);
+	void	(*walk)(Xfile*, char*);
+	void	(*open)(Xfile*, int);
+	void	(*create)(Xfile*, char*, long, int);
+	long	(*readdir)(Xfile*, uchar*, long, long);
+	long	(*read)(Xfile*, char*, vlong, long);
+	long	(*write)(Xfile*, char*, vlong, long);
+	void	(*clunk)(Xfile*);
+	void	(*remove)(Xfile*);
+	void	(*stat)(Xfile*, Dir*);
+	void	(*wstat)(Xfile*, Dir*);
+};
+
+struct Xfs
+{
+	Xdata*	d;		/* how to get the bits */
+	Xfsub*	s;		/* how to use them */
+	int	ref;
+	int	issusp;	/* follows system use sharing protocol */
+	long	suspoff;	/* if so, offset at which SUSP area begins */
+	int	isrock;	/* Rock Ridge format */
+	int	isplan9;	/* has Plan 9-specific directory info */
+	Qid	rootqid;
+	Isofile*	ptr;		/* private data */
+};
+
+struct Xfile
+{
+	Xfile*	next;		/* in fid hash bucket */
+	Xfs*	xf;
+	long	fid;
+	ulong	flags;
+	Qid	qid;
+	int	len;		/* of private data */
+	Isofile*	ptr;
+};
+
+enum
+{
+	Asis,
+	Clean,
+	Clunk
+};
+
+enum
+{
+	Oread = 1,
+	Owrite = 2,
+	Orclose = 4,
+	Omodes = 3,
+};
+
+extern char	Enonexist[];	/* file does not exist */
+extern char	Eperm[];	/* permission denied */
+extern char	Enofile[];	/* no file system specified */
+extern char	Eauth[];	/* authentication failed */
+
+extern char	*srvname;
+extern char	*deffile;
+extern int	chatty;
+extern jmp_buf	err_lab[];
+extern int	nerr_lab;
+extern char	err_msg[];
+
+extern int nojoliet;
+extern int noplan9;
+extern int norock;
-- 
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