Import sources from 2011-03-30 iso image

1 files changed, 75 insertions, 0 deletions

diff --git a/sys/src/cmd/cfs/cformat.h b/sys/src/cmd/cfs/cformat.h
new file mode 100755
index 000000000..b69e3ee8b
--- /dev/null
+++ b/sys/src/cmd/cfs/cformat.h
@@ -0,0 +1,75 @@
+/*
+ *  format of cache on disk
+ */
+typedef struct Dptr	Dptr;
+typedef struct Dahdr	Dahdr;
+typedef struct Dalloc	Dalloc;
+typedef struct Fphdr	Fphdr;
+typedef struct Fptr	Fptr;
+typedef struct Inode	Inode;
+typedef struct Dihdr	Dihdr;
+typedef struct Dinode	Dinode;
+
+enum
+{
+	Amagic= 	0xbebeefed,	/* allocation block magic */
+	Imagic=		0xbadc00ce,	/* inode block magic */
+	BtoUL=		8*sizeof(ulong),/* bits in a ulong */
+	CACHENAMELEN=	128
+};
+#define	Indbno		0x80000000	/* indirect block */
+#define	Notabno		0xFFFFFFFF	/* not a block number */
+
+/*
+ *  Allocation blocks at the begining of the disk.  There are
+ *  enough of these blocks to supply 1 bit for each block on the
+ *  disk;
+ */
+struct Dahdr
+{
+	ulong	magic;
+	ulong	bsize;		/* logical block size */
+	char	name[CACHENAMELEN];
+	short	nab;		/* number of allocation blocks */
+};
+struct Dalloc
+{
+	Dahdr;
+	ulong	bits[1];
+};
+
+/*
+ *  A pointer to disk data
+ */
+struct Dptr
+{
+	ulong	fbno;		/* file block number */
+	ulong	bno;		/* disk block number */
+	ushort	start;		/* offset into block of valid data */
+	ushort	end;		/* offset into block after valid data */
+};
+
+/*
+ *  A file descriptor.
+ */
+struct Inode
+{
+	Qid	qid;
+	vlong	length;
+	Dptr	ptr;		/* pointer page */	
+	char	inuse;
+};
+
+/*
+ *  inode blocks (after allocation blocks)
+ */
+struct Dihdr
+{
+	ulong	magic;
+	ulong	nino;		/* number of inodes */
+};
+struct Dinode
+{
+	Dihdr;
+	Inode	inode[1];
+};