Import sources from 2011-03-30 iso image

1 files changed, 69 insertions, 0 deletions

diff --git a/sys/src/cmd/dossrv/iotrack.h b/sys/src/cmd/dossrv/iotrack.h
new file mode 100755
index 000000000..39b39c306
--- /dev/null
+++ b/sys/src/cmd/dossrv/iotrack.h
@@ -0,0 +1,69 @@
+typedef struct MLock	MLock;
+typedef	struct Iosect	Iosect;
+typedef	struct Iotrack	Iotrack;
+typedef struct Track	Track;
+typedef struct Xfs	Xfs;
+
+struct MLock
+{
+	char	key;
+};
+
+struct Iosect
+{
+	Iosect *next;
+	short	flags;
+	MLock	lock;
+	Iotrack *t;
+	uchar *	iobuf;
+};
+
+struct Iotrack
+{
+	short	flags;
+	Xfs *	xf;
+	long	addr;
+	Iotrack	*next;		/* in lru list */
+	Iotrack	*prev;
+	Iotrack	*hnext;		/* in hash list */
+	Iotrack	*hprev;
+	MLock	lock;
+	int	ref;
+	Track	*tp;
+};
+
+enum{
+	Sectorsize = 512,
+	Sect2trk = 9,
+	Trksize = Sectorsize*Sect2trk
+};
+
+struct Track
+{
+	Iosect *p[Sect2trk];
+	uchar	buf[Sect2trk][Sectorsize];
+};
+
+#define	BMOD		(1<<0)
+#define	BIMM		(1<<1)
+#define	BSTALE		(1<<2)
+
+Iosect*	getiosect(Xfs*, long, int);
+Iosect*	getosect(Xfs*, long);
+Iosect*	getsect(Xfs*, long);
+Iosect*	newsect(void);
+Iotrack*	getiotrack(Xfs*, long);
+int	canmlock(MLock*);
+int	devcheck(Xfs*);
+int	devread(Xfs*, long, void*, long);
+int	devwrite(Xfs*, long, void*, long);
+int	tread(Iotrack*);
+int	twrite(Iotrack*);
+void	freesect(Iosect*);
+void	iotrack_init(void);
+void	mlock(MLock*);
+void	purgebuf(Xfs*);
+void	purgetrack(Iotrack*);
+void	putsect(Iosect*);
+void	sync(void);
+void	unmlock(MLock*);