Import sources from 2011-03-30 iso image

1 files changed, 255 insertions, 0 deletions

diff --git a/sys/src/cmd/dossrv/dat.h b/sys/src/cmd/dossrv/dat.h
new file mode 100755
index 000000000..45202c69a
--- /dev/null
+++ b/sys/src/cmd/dossrv/dat.h
@@ -0,0 +1,255 @@
+typedef struct Dosboot		Dosboot;
+typedef struct Dosboot32	Dosboot32;
+typedef struct Dosbpb		Dosbpb;
+typedef struct Dosdir		Dosdir;
+typedef struct Dospart		Dospart;
+typedef struct Dosptr		Dosptr;
+typedef struct Fatinfo		Fatinfo;
+typedef struct Xfs		Xfs;
+typedef struct Xfile		Xfile;
+
+struct Dospart{
+	uchar	active;
+	uchar	hstart;
+	uchar	cylstart[2];
+	uchar	type;
+	uchar	hend;
+	uchar	cylend[2];
+	uchar	start[4];
+	uchar	length[4];
+};
+
+enum
+{
+	/*
+	 * dos partition types
+	 */
+	FAT12		= 0x01,
+	FAT16		= 0x04,		/* partitions smaller than 32MB */
+	FATHUGE		= 0x06,		/* fat16 partitions larger than 32MB */
+	FAT32		= 0x0b,
+	FAT32X		= 0x0c,
+	FATHUGEX	= 0x0e,
+	DMDDO		= 0x54,
+
+	FATRESRV	= 2,		/* number of reserved fat entries */
+};
+
+/*
+ * dos boot sector, the start of every dos partition
+ */
+struct Dosboot{
+	uchar	magic[3];
+	uchar	version[8];
+	uchar	sectsize[2];
+	uchar	clustsize;
+	uchar	nresrv[2];
+	uchar	nfats;
+	uchar	rootsize[2];
+	uchar	volsize[2];
+	uchar	mediadesc;
+	uchar	fatsize[2];
+	uchar	trksize[2];
+	uchar	nheads[2];
+	uchar	nhidden[4];
+	uchar	bigvolsize[4];		/* same as Dosboot32 up to here */
+	uchar	driveno;
+	uchar	reserved0;
+	uchar	bootsig;
+	uchar	volid[4];
+	uchar	label[11];
+	uchar	reserved1[8];
+};
+
+/*
+ * dos boot sector for FAT32
+ */
+enum
+{
+	NOFATMIRROR	= 0x0080,	/* masks for extflags */
+	ACTFATMASK	= 0x000f,
+};
+
+struct Dosboot32{
+	uchar	magic[3];
+	uchar	version[8];
+	uchar	sectsize[2];
+	uchar	clustsize;
+	uchar	nresrv[2];
+	uchar	nfats;
+	uchar	rootsize[2];
+	uchar	volsize[2];
+	uchar	mediadesc;
+	uchar	fatsize[2];
+	uchar	trksize[2];
+	uchar	nheads[2];
+	uchar	nhidden[4];
+	uchar	bigvolsize[4];		/* same as Dosboot up to here */
+	uchar	fatsize32[4];		/* sectors per fat */
+	uchar	extflags[2];		/* active fat flags */
+	uchar	version1[2];		/* fat32 version; major & minor bytes */
+	uchar	rootstart[4];		/* starting cluster of root dir */
+	uchar	infospec[2];		/* fat allocation info sector */
+	uchar	backupboot[2];		/* backup boot sector */
+	uchar	reserved[12];
+};
+
+/*
+ * optional FAT32 info sector
+ */
+enum
+{
+	FATINFOSIG1	= 0x41615252UL,
+	FATINFOSIG	= 0x61417272UL,
+};
+
+struct Fatinfo
+{
+	uchar	sig1[4];
+	uchar	pad[480];
+	uchar	sig[4];
+	uchar	freeclust[4];	/* num frre clusters; -1 is unknown */
+	uchar	nextfree[4];	/* most recently allocated cluster */
+	uchar	resrv[4*3];
+};
+
+/*
+ * BIOS paramater block
+ */
+struct Dosbpb{
+	MLock;				/* access to fat */
+	int	sectsize;		/* in bytes */
+	int	clustsize;		/* in sectors */
+	int	nresrv;			/* sectors */
+	int	nfats;			/* usually 2; modified to 1 if fat mirroring disabled */
+	int	rootsize;		/* number of entries, for fat12 and fat16 */
+	long	volsize;		/* in sectors */
+	int	mediadesc;
+	long	fatsize;		/* in sectors */
+	int	fatclusters;
+	int	fatbits;		/* 12, 16, or 32 */
+	long	fataddr;		/* sector number of first valid fat entry */
+	long	rootaddr;		/* for fat16 or fat12, sector of root dir */
+	long	rootstart;		/* for fat32, cluster of root dir */
+	long	dataaddr;		/* initial sector of data clusters */
+	long	freeptr;		/* next free cluster candidate */
+	long	freeclusters;		/* count of free clusters, for fat32 */
+	int	fatinfo;		/* fat info sector location; 0 => none */
+};
+
+enum
+{
+	DOSDIRSIZE	= 32,
+	DOSEMPTY	= 0xe5,			/* first char in name if entry is unused */
+	DOSRUNE		= 13,			/* runes per dosdir in a long file name */
+	DOSNAMELEN	= 261			/* max dos file name length */
+};
+
+struct Dosdir{
+	uchar	name[8];
+	uchar	ext[3];
+	uchar	attr;
+	uchar	reserved[1];
+	uchar	ctime[3];		/* creation time */
+	uchar	cdate[2];		/* creation date */
+	uchar	adate[2];		/* last access date */
+	uchar	hstart[2];		/* high bits of start for fat32 */
+	uchar	time[2];		/* last modified time */
+	uchar	date[2];		/* last modified date */
+	uchar	start[2];
+	uchar	length[4];
+};
+
+enum
+{
+	DRONLY		= 0x01,
+	DHIDDEN		= 0x02,
+	DSYSTEM		= 0x04,
+	DVLABEL		= 0x08,
+	DDIR		= 0x10,
+	DARCH		= 0x20,
+};
+
+#define	GSHORT(p)	(((p)[0])|(p)[1]<<8)
+#define	GLONG(p)	(((long)(p)[0])|(p)[1]<<8|(p)[2]<<16|(p)[3]<<24)
+#define PSHORT(p,v)	((p)[0]=(v),(p)[1]=(v)>>8)
+#define PLONG(p,v)	((p)[0]=(v),(p)[1]=(v)>>8,(p)[2]=(v)>>16,(p)[3]=(v)>>24)
+
+struct Dosptr{
+	ulong	addr;		/* sector & entry within of file's directory entry */
+	ulong	offset;
+	ulong	paddr;		/* of parent's directory entry */
+	ulong	poffset;
+	ulong	iclust;		/* ordinal within file */
+	ulong	clust;
+	ulong	naddr;		/* next block in directory (for writing multi entry elements) */
+	ulong	prevaddr;
+	Iosect *p;
+	Dosdir *d;
+};
+
+#define	QIDPATH(p)	((p)->addr*(Sectorsize/DOSDIRSIZE) + \
+			 (p)->offset/DOSDIRSIZE)
+
+struct Xfs{
+	Xfs	*next;
+	int omode;		/* of file containing external fs */
+	char	*name;		/* of file containing external f.s. */
+	Qid	qid;		/* of file containing external f.s. */
+	long	ref;		/* attach count */
+	Qid	rootqid;	/* of plan9 constructed root directory */
+	uchar	isfat32;	/* is a fat 32 file system? */
+	short	dev;
+	short	fmt;
+	long	offset;
+	void	*ptr;
+};
+
+struct Xfile{
+	Xfile	*next;		/* in hash bucket */
+	long	fid;
+	ulong	flags;
+	Qid	qid;
+	Xfs	*xf;
+	Dosptr	*ptr;
+};
+
+enum{
+	Asis, Clean, Clunk
+};
+
+enum{
+	Invalid, Short, ShortLower, Long
+};
+
+enum{	/* Xfile flags */
+	Oread = 1,
+	Owrite = 2,
+	Orclose = 4,
+	Omodes = 3,
+};
+
+enum{
+	Enevermind,
+	Eformat,
+	Eio,
+	Enoauth,
+	Enomem,
+	Enonexist,
+	Eperm,
+	Enofilsys,
+	Eauth,
+	Econtig,
+	Ebadfcall,
+	Ebadstat,
+	Eversion,
+	Etoolong,
+	Eerrstr,
+	ESIZE
+};
+
+extern int	chatty;
+extern int	errno;
+extern int	readonly;
+extern char	*deffile;
+extern int trspaces;
\ No newline at end of file