tfcall.h - plan9port - [fork] Plan 9 from user space
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tfcall.h (3245B)
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1 #ifndef _FCALL_H_
2 #define _FCALL_H_ 1
3 #ifdef __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 #define MAXWELEM 16
13
14 typedef
15 struct Fcall
16 {
17 uchar type;
18 u32int fid;
19 ushort tag;
20 u32int msize; /* Tversion, Rversion */
21 char *version; /* Tversion, Rversion */
22 ushort oldtag; /* Tflush */
23 char *ename; /* Rerror */
24 Qid qid; /* Rattach, Ropen, Rcreate */
25 u32int iounit; /* Ropen, Rcreate */
26 Qid aqid; /* Rauth */
27 u32int afid; /* Tauth, Tattach */
28 char *uname; /* Tauth, Tattach */
29 char *aname; /* Tauth, Tattach */
30 u32int perm; /* Tcreate */
31 char *name; /* Tcreate */
32 uchar mode; /* Tcreate, Topen */
33 u32int newfid; /* Twalk */
34 ushort nwname; /* Twalk */
35 char *wname[MAXWELEM]; /* Twalk */
36 ushort nwqid; /* Rwalk */
37 Qid wqid[MAXWELEM]; /* Rwalk */
38 vlong offset; /* Tread, Twrite */
39 u32int count; /* Tread, Twrite, Rread */
40 char *data; /* Twrite, Rread */
41 ushort nstat; /* Twstat, Rstat */
42 uchar *stat; /* Twstat, Rstat */
43 int unixfd; /* Ropenfd */
44
45 /* 9P2000.u extensions */
46 int errornum; /* Rerror */
47 int uidnum; /* Tattach, Tauth */
48 char *extension; /* Tcreate */
49 } Fcall;
50
51
52 #define GBIT8(p) ((p)[0])
53 #define GBIT16(p) ((p)[0]|((p)[1]<<8))
54 #define GBIT32(p) ((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)))
55 #define GBIT64(p) ((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
56 ((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
57
58 #define PBIT8(p,v) (p)[0]=(v)
59 #define PBIT16(p,v) (p)[0]=(v);(p)[1]=(v)>>8
60 #define PBIT32(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
61 #define PBIT64(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
62 (p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
63
64 #define BIT8SZ 1
65 #define BIT16SZ 2
66 #define BIT32SZ 4
67 #define BIT64SZ 8
68 #define QIDSZ (BIT8SZ+BIT32SZ+BIT64SZ)
69
70 /* STATFIXLEN includes leading 16-bit count */
71 /* The count, however, excludes itself; total size is BIT16SZ+count */
72 #define STATFIXLEN (BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ) /* amount of fixed length data in a stat buffer */
73 #define STATFIXLENU (STATFIXLEN+BIT16SZ+3*BIT32SZ) /* for 9P2000.u */
74
75 #define NOTAG (ushort)~0U /* Dummy tag */
76 #define NOFID (u32int)~0U /* Dummy fid */
77 #define NOUID (-1) /* Dummy uid */
78 #define IOHDRSZ 24 /* ample room for Twrite/Rread header (iounit) */
79
80 enum
81 {
82 Tversion = 100,
83 Rversion,
84 Tauth = 102,
85 Rauth,
86 Tattach = 104,
87 Rattach,
88 Terror = 106, /* illegal */
89 Rerror,
90 Tflush = 108,
91 Rflush,
92 Twalk = 110,
93 Rwalk,
94 Topen = 112,
95 Ropen,
96 Tcreate = 114,
97 Rcreate,
98 Tread = 116,
99 Rread,
100 Twrite = 118,
101 Rwrite,
102 Tclunk = 120,
103 Rclunk,
104 Tremove = 122,
105 Rremove,
106 Tstat = 124,
107 Rstat,
108 Twstat = 126,
109 Rwstat,
110 Tmax,
111
112 Topenfd = 98,
113 Ropenfd
114 };
115
116 uint convM2S(uchar*, uint, Fcall*);
117 uint convS2M(Fcall*, uchar*, uint);
118 uint sizeS2M(Fcall*);
119
120 int statcheck(uchar *abuf, uint nbuf);
121 uint convM2D(uchar*, uint, Dir*, char*);
122 uint convD2M(Dir*, uchar*, uint);
123 uint sizeD2M(Dir*);
124
125 int fcallfmt(Fmt*);
126 int dirfmt(Fmt*);
127 int dirmodefmt(Fmt*);
128
129 int read9pmsg(int, void*, uint);
130
131 /*
132 #pragma varargck type "F" Fcall*
133 #pragma varargck type "M" ulong
134 #pragma varargck type "D" Dir*
135 */
136
137 #ifdef __cplusplus
138 }
139 #endif
140 #endif