sys/include/fcall.h

   1 #pragma src     "/sys/src/libc/9sys"
   2 #pragma lib     "libc.a"
   3
   4 #define VERSION9P       "9P2000"
   5
   6 #define MAXWELEM        16
   7
   8 typedef
   9 struct  Fcall
  10 {
  11         uchar   type;
  12         u32int  fid;
  13         ushort  tag;
  14         union {
  15                 struct {
  16                         u32int  msize;          /* Tversion, Rversion */
  17                         char    *version;       /* Tversion, Rversion */
  18                 };
  19                 struct {
  20                         ushort  oldtag;         /* Tflush */
  21                 };
  22                 struct {
  23                         char    *ename;         /* Rerror */
  24                 };
  25                 struct {
  26                         Qid     qid;            /* Rattach, Ropen, Rcreate */
  27                         u32int  iounit;         /* Ropen, Rcreate */
  28                 };
  29                 struct {
  30                         Qid     aqid;           /* Rauth */
  31                 };
  32                 struct {
  33                         u32int  afid;           /* Tauth, Tattach */
  34                         char    *uname;         /* Tauth, Tattach */
  35                         char    *aname;         /* Tauth, Tattach */
  36                 };
  37                 struct {
  38                         u32int  perm;           /* Tcreate */
  39                         char    *name;          /* Tcreate */
  40                         uchar   mode;           /* Tcreate, Topen */
  41                 };
  42                 struct {
  43                         u32int  newfid;         /* Twalk */
  44                         ushort  nwname;         /* Twalk */
  45                         char    *wname[MAXWELEM];       /* Twalk */
  46                 };
  47                 struct {
  48                         ushort  nwqid;          /* Rwalk */
  49                         Qid     wqid[MAXWELEM];         /* Rwalk */
  50                 };
  51                 struct {
  52                         vlong   offset;         /* Tread, Twrite */
  53                         u32int  count;          /* Tread, Twrite, Rread */
  54                         char    *data;          /* Twrite, Rread */
  55                 };
  56                 struct {
  57                         ushort  nstat;          /* Twstat, Rstat */
  58                         uchar   *stat;          /* Twstat, Rstat */
  59                 };
  60         };
  61 } Fcall;
  62
  63
  64 #define GBIT8(p)        ((p)[0])
  65 #define GBIT16(p)       ((p)[0]|((p)[1]<<8))
  66 #define GBIT32(p)       ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
  67 #define GBIT64(p)       ((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
  68                                 ((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
  69
  70 #define PBIT8(p,v)      (p)[0]=(v)
  71 #define PBIT16(p,v)     (p)[0]=(v);(p)[1]=(v)>>8
  72 #define PBIT32(p,v)     (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24
  73 #define PBIT64(p,v)     (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
  74                         (p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56
  75
  76 #define BIT8SZ          1
  77 #define BIT16SZ         2
  78 #define BIT32SZ         4
  79 #define BIT64SZ         8
  80 #define QIDSZ   (BIT8SZ+BIT32SZ+BIT64SZ)
  81
  82 /* STATFIXLEN includes leading 16-bit count */
  83 /* The count, however, excludes itself; total size is BIT16SZ+count */
  84 #define STATFIXLEN      (BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ)   /* amount of fixed length data in a stat buffer */
  85
  86 #define NOTAG           (ushort)~0U     /* Dummy tag */
  87 #define NOFID           (u32int)~0U     /* Dummy fid */
  88 #define IOHDRSZ         24      /* ample room for Twrite/Rread header (iounit) */
  89
  90 enum
  91 {
  92         Tversion =      100,
  93         Rversion,
  94         Tauth =         102,
  95         Rauth,
  96         Tattach =       104,
  97         Rattach,
  98         Terror =        106,    /* illegal */
  99         Rerror,
 100         Tflush =        108,
 101         Rflush,
 102         Twalk =         110,
 103         Rwalk,
 104         Topen =         112,
 105         Ropen,
 106         Tcreate =       114,
 107         Rcreate,
 108         Tread =         116,
 109         Rread,
 110         Twrite =        118,
 111         Rwrite,
 112         Tclunk =        120,
 113         Rclunk,
 114         Tremove =       122,
 115         Rremove,
 116         Tstat =         124,
 117         Rstat,
 118         Twstat =        126,
 119         Rwstat,
 120         Tmax,
 121 };
 122
 123 uint    convM2S(uchar*, uint, Fcall*);
 124 uint    convS2M(Fcall*, uchar*, uint);
 125 uint    sizeS2M(Fcall*);
 126
 127 int     statcheck(uchar *abuf, uint nbuf);
 128 uint    convM2D(uchar*, uint, Dir*, char*);
 129 uint    convD2M(Dir*, uchar*, uint);
 130 uint    sizeD2M(Dir*);
 131
 132 int     fcallfmt(Fmt*);
 133 int     dirfmt(Fmt*);
 134 int     dirmodefmt(Fmt*);
 135
 136 int     read9pmsg(int, void*, uint);
 137
 138 #pragma varargck        type    "F"     Fcall*
 139 #pragma varargck        type    "M"     ulong
 140 #pragma varargck        type    "D"     Dir*