1 /*
2 #pragma	src	"/sys/src/libc/9sys"
3 #pragma	lib	"libc.a"
4 */
5 
6 #define	VERSION9P	"9P2000"
7 
8 #define	MAXWELEM	16
9 
10 typedef
11 struct	Fcall
12 {
13 	uchar	type;
14 	u32int	fid;
15 	ushort	tag;
16 	u32int	msize;		/* Tversion, Rversion */
17 	char	*version;	/* Tversion, Rversion */
18 	ushort	oldtag;		/* Tflush */
19 	char	*ename;		/* Rerror */
20 	Qid	qid;		/* Rattach, Ropen, Rcreate */
21 	u32int	iounit;		/* Ropen, Rcreate */
22 	Qid	aqid;		/* Rauth */
23 	u32int	afid;		/* Tauth, Tattach */
24 	char	*uname;		/* Tauth, Tattach */
25 	char	*aname;		/* Tauth, Tattach */
26 	u32int	perm;		/* Tcreate */ 
27 	char	*name;		/* Tcreate */
28 	uchar	mode;		/* Tcreate, Topen */
29 	u32int	newfid;		/* Twalk */
30 	ushort	nwname;		/* Twalk */
31 	char	*wname[MAXWELEM];	/* Twalk */
32 	ushort	nwqid;		/* Rwalk */
33 	Qid	wqid[MAXWELEM];		/* Rwalk */
34 	vlong	offset;		/* Tread, Twrite */
35 	u32int	count;		/* Tread, Twrite, Rread */
36 	char	*data;		/* Twrite, Rread */
37 	ushort	nstat;		/* Twstat, Rstat */
38 	uchar	*stat;		/* Twstat, Rstat */
39 } Fcall;
40 
41 
42 #define	GBIT8(p)	((p)[0])
43 #define	GBIT16(p)	((p)[0]|((p)[1]<<8))
44 #define	GBIT32(p)	((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
45 #define	GBIT64(p)	((vlong)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
46 				((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
47 
48 #define	PBIT8(p,v)	(p)[0]=(v)
49 #define	PBIT16(p,v)	(p)[0]=(v);(p)[1]=(v)>>8
50 #define	PBIT32(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
51 #define	PBIT64(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
52 			(p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
53 
54 #define	BIT8SZ		1
55 #define	BIT16SZ		2
56 #define	BIT32SZ		4
57 #define	BIT64SZ		8
58 #define	QIDSZ	(BIT8SZ+BIT32SZ+BIT64SZ)
59 
60 /* STATFIXLEN includes leading 16-bit count */
61 /* The count, however, excludes itself; total size is BIT16SZ+count */
62 #define STATFIXLEN	(BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ)	/* amount of fixed length data in a stat buffer */
63 
64 #define	NOTAG		(ushort)~0U	/* Dummy tag */
65 #define	NOFID		(u32int)~0U	/* Dummy fid */
66 #define	IOHDRSZ		24	/* ample room for Twrite/Rread header (iounit) */
67 
68 enum
69 {
70 	Tversion =	100,
71 	Rversion,
72 	Tauth =		102,
73 	Rauth,
74 	Tattach =	104,
75 	Rattach,
76 	Terror =	106,	/* illegal */
77 	Rerror,
78 	Tflush =	108,
79 	Rflush,
80 	Twalk =		110,
81 	Rwalk,
82 	Topen =		112,
83 	Ropen,
84 	Tcreate =	114,
85 	Rcreate,
86 	Tread =		116,
87 	Rread,
88 	Twrite =	118,
89 	Rwrite,
90 	Tclunk =	120,
91 	Rclunk,
92 	Tremove =	122,
93 	Rremove,
94 	Tstat =		124,
95 	Rstat,
96 	Twstat =	126,
97 	Rwstat,
98 	Tmax,
99 };
100 
101 uint	convM2S(uchar*, uint, Fcall*);
102 uint	convS2M(Fcall*, uchar*, uint);
103 uint	sizeS2M(Fcall*);
104 
105 int	statcheck(uchar *abuf, uint nbuf);
106 uint	convM2D(uchar*, uint, Dir*, char*);
107 uint	convD2M(Dir*, uchar*, uint);
108 uint	sizeD2M(Dir*);
109 
110 int	fcallfmt(Fmt*);
111 int	dirfmt(Fmt*);
112 int	dirmodefmt(Fmt*);
113 
114 int	read9pmsg(int, void*, uint);
115 
116 /*
117 #pragma	varargck	type	"F"	Fcall*
118 #pragma	varargck	type	"M"	ulong
119 #pragma	varargck	type	"D"	Dir*
120 */