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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/cmd/9660srv/dat.h – Rev 2

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