1 #ifndef _FCALL_H_
2 #define _FCALL_H_ 1
3 #if defined(__cplusplus)
4 extern "C" { 
5 #endif
6 /*
7 #pragma	src	"/sys/src/libc/9sys"
8 #pragma	lib	"libc.a"
9 */
10 
11 #define	VERSION9P	"9P2000"
12 
13 #define	MAXWELEM	16
14 
15 typedef
16 struct	Fcall
17 {
18 	uchar	type;
19 	u32int	fid;
20 	ushort	tag;
21 	u32int	msize;		/* Tversion, Rversion */
22 	char	*version;	/* Tversion, Rversion */
23 	ushort	oldtag;		/* Tflush */
24 	char	*ename;		/* Rerror */
25 	Qid	qid;		/* Rattach, Ropen, Rcreate */
26 	u32int	iounit;		/* Ropen, Rcreate */
27 	Qid	aqid;		/* Rauth */
28 	u32int	afid;		/* Tauth, Tattach */
29 	char	*uname;		/* Tauth, Tattach */
30 	char	*aname;		/* Tauth, Tattach */
31 	u32int	perm;		/* Tcreate */ 
32 	char	*name;		/* Tcreate */
33 	uchar	mode;		/* Tcreate, Topen */
34 	u32int	newfid;		/* Twalk */
35 	ushort	nwname;		/* Twalk */
36 	char	*wname[MAXWELEM];	/* Twalk */
37 	ushort	nwqid;		/* Rwalk */
38 	Qid	wqid[MAXWELEM];		/* Rwalk */
39 	vlong	offset;		/* Tread, Twrite */
40 	u32int	count;		/* Tread, Twrite, Rread */
41 	char	*data;		/* Twrite, Rread */
42 	ushort	nstat;		/* Twstat, Rstat */
43 	uchar	*stat;		/* Twstat, Rstat */
44 } Fcall;
45 
46 
47 #define	GBIT8(p)	((p)[0])
48 #define	GBIT16(p)	((p)[0]|((p)[1]<<8))
49 #define	GBIT32(p)	((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
50 #define	GBIT64(p)	((vlong)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
51 				((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
52 
53 #define	PBIT8(p,v)	(p)[0]=(v)
54 #define	PBIT16(p,v)	(p)[0]=(v);(p)[1]=(v)>>8
55 #define	PBIT32(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
56 #define	PBIT64(p,v)	(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
57 			(p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
58 
59 #define	BIT8SZ		1
60 #define	BIT16SZ		2
61 #define	BIT32SZ		4
62 #define	BIT64SZ		8
63 #define	QIDSZ	(BIT8SZ+BIT32SZ+BIT64SZ)
64 
65 /* STATFIXLEN includes leading 16-bit count */
66 /* The count, however, excludes itself; total size is BIT16SZ+count */
67 #define STATFIXLEN	(BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ)	/* amount of fixed length data in a stat buffer */
68 
69 #define	NOTAG		(ushort)~0U	/* Dummy tag */
70 #define	NOFID		(u32int)~0U	/* Dummy fid */
71 #define	IOHDRSZ		24	/* ample room for Twrite/Rread header (iounit) */
72 
73 enum
74 {
75 	Tversion =	100,
76 	Rversion,
77 	Tauth =		102,
78 	Rauth,
79 	Tattach =	104,
80 	Rattach,
81 	Terror =	106,	/* illegal */
82 	Rerror,
83 	Tflush =	108,
84 	Rflush,
85 	Twalk =		110,
86 	Rwalk,
87 	Topen =		112,
88 	Ropen,
89 	Tcreate =	114,
90 	Rcreate,
91 	Tread =		116,
92 	Rread,
93 	Twrite =	118,
94 	Rwrite,
95 	Tclunk =	120,
96 	Rclunk,
97 	Tremove =	122,
98 	Rremove,
99 	Tstat =		124,
100 	Rstat,
101 	Twstat =	126,
102 	Rwstat,
103 	Tmax,
104 };
105 
106 uint	convM2S(uchar*, uint, Fcall*);
107 uint	convS2M(Fcall*, uchar*, uint);
108 uint	sizeS2M(Fcall*);
109 
110 int	statcheck(uchar *abuf, uint nbuf);
111 uint	convM2D(uchar*, uint, Dir*, char*);
112 uint	convD2M(Dir*, uchar*, uint);
113 uint	sizeD2M(Dir*);
114 
115 int	fcallfmt(Fmt*);
116 int	dirfmt(Fmt*);
117 int	dirmodefmt(Fmt*);
118 
119 int	read9pmsg(int, void*, uint);
120 
121 /*
122 #pragma	varargck	type	"F"	Fcall*
123 #pragma	varargck	type	"M"	ulong
124 #pragma	varargck	type	"D"	Dir*
125 */
126 #if defined(__cplusplus)
127 }
128 #endif
129 #endif