/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #pragma	src	"/sys/src/libc/9sys"#pragma	lib	"libc.a" #define	VERSION9P	"9P2000" #define	MAXWELEM	16 typedefstruct	Fcall{	uchar	type;	u32int	fid;	ushort	tag;	union {		struct {			u32int	msize;		/* Tversion, Rversion */			char	*version;	/* Tversion, Rversion */		};		struct {			ushort	oldtag;		/* Tflush */		};		struct {			char	*ename;		/* Rerror */		};		struct {			Qid	qid;		/* Rattach, Ropen, Rcreate */			u32int	iounit;		/* Ropen, Rcreate */		};		struct {			Qid	aqid;		/* Rauth */		};		struct {			u32int	afid;		/* Tauth, Tattach */			char	*uname;		/* Tauth, Tattach */			char	*aname;		/* Tauth, Tattach */		};		struct {			u32int	perm;		/* Tcreate */ 			char	*name;		/* Tcreate */			uchar	mode;		/* Tcreate, Topen */		};		struct {			u32int	newfid;		/* Twalk */			ushort	nwname;		/* Twalk */			char	*wname[MAXWELEM];	/* Twalk */		};		struct {			ushort	nwqid;		/* Rwalk */			Qid	wqid[MAXWELEM];		/* Rwalk */		};		struct {			vlong	offset;		/* Tread, Twrite */			u32int	count;		/* Tread, Twrite, Rread */			char	*data;		/* Twrite, Rread */		};		struct {			ushort	nstat;		/* Twstat, Rstat */			uchar	*stat;		/* Twstat, Rstat */		};	};} Fcall;  #define	GBIT8(p)	((p)[0])#define	GBIT16(p)	((p)[0]|((p)[1]<<8))#define	GBIT32(p)	((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))#define	GBIT64(p)	((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\				((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32)) #define	PBIT8(p,v)	(p)[0]=(v)#define	PBIT16(p,v)	(p)[0]=(v);(p)[1]=(v)>>8#define	PBIT32(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24#define	PBIT64(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\			(p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56 #define	BIT8SZ		1#define	BIT16SZ		2#define	BIT32SZ		4#define	BIT64SZ		8#define	QIDSZ	(BIT8SZ+BIT32SZ+BIT64SZ) /* STATFIXLEN includes leading 16-bit count *//* The count, however, excludes itself; total size is BIT16SZ+count */#define STATFIXLEN	(BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ)	/* amount of fixed length data in a stat buffer */ #define	NOTAG		(ushort)~0U	/* Dummy tag */#define	NOFID		(u32int)~0U	/* Dummy fid */#define	IOHDRSZ		24	/* ample room for Twrite/Rread header (iounit) */ enum{	Tversion =	100,	Rversion,	Tauth =		102,	Rauth,	Tattach =	104,	Rattach,	Terror =	106,	/* illegal */	Rerror,	Tflush =	108,	Rflush,	Twalk =		110,	Rwalk,	Topen =		112,	Ropen,	Tcreate =	114,	Rcreate,	Tread =		116,	Rread,	Twrite =	118,	Rwrite,	Tclunk =	120,	Rclunk,	Tremove =	122,	Rremove,	Tstat =		124,	Rstat,	Twstat =	126,	Rwstat,	Tmax,}; uint	convM2S(uchar*, uint, Fcall*);uint	convS2M(Fcall*, uchar*, uint);uint	sizeS2M(Fcall*); int	statcheck(uchar *abuf, uint nbuf);uint	convM2D(uchar*, uint, Dir*, char*);uint	convD2M(Dir*, uchar*, uint);uint	sizeD2M(Dir*); int	fcallfmt(Fmt*);int	dirfmt(Fmt*);int	dirmodefmt(Fmt*); int	read9pmsg(int, void*, uint); #pragma	varargck	type	"F"	Fcall*#pragma	varargck	type	"M"	ulong#pragma	varargck	type	"D"	Dir*