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)        (((uchar*)(p))[0])
  65 #define GBIT16(p)       (((uchar*)(p))[0]|(((uchar*)(p))[1]<<8))
  66 #define GBIT32(p)       (((uchar*)(p))[0]|(((uchar*)(p))[1]<<8)|\
  67                                 (((uchar*)(p))[2]<<16)|(((uchar*)(p))[3]<<24))
  68 #define GBIT64(p)       ((u32int)(((uchar*)(p))[0]|(((uchar*)(p))[1]<<8)|\
  69                                 (((uchar*)(p))[2]<<16)|(((uchar*)(p))[3]<<24)) |\
  70                         ((uvlong)(((uchar*)(p))[4]|(((uchar*)(p))[5]<<8)|\
  71                                 (((uchar*)(p))[6]<<16)|(((uchar*)(p))[7]<<24)) << 32))
  72
  73 #define PBIT8(p,v)      do{(p)[0]=(v);}while(0)
  74 #define PBIT16(p,v)     do{(p)[0]=(v);(p)[1]=(v)>>8;}while(0)
  75 #define PBIT32(p,v)     do{(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;}while(0)
  76 #define PBIT64(p,v)     do{(p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24;\
  77                            (p)[4]=(v)>>32;(p)[5]=(v)>>40;(p)[6]=(v)>>48;(p)[7]=(v)>>56;}while(0)
  78
  79 #define BIT8SZ          1
  80 #define BIT16SZ         2
  81 #define BIT32SZ         4
  82 #define BIT64SZ         8
  83 #define QIDSZ   (BIT8SZ+BIT32SZ+BIT64SZ)
  84
  85 /* STATFIXLEN includes leading 16-bit count */
  86 /* The count, however, excludes itself; total size is BIT16SZ+count */
  87 #define STATFIXLEN      (BIT16SZ+QIDSZ+5*BIT16SZ+4*BIT32SZ+1*BIT64SZ)   /* amount of fixed length data in a stat buffer */
  88
  89 #define NOTAG           (ushort)~0U     /* Dummy tag */
  90 #define NOFID           (u32int)~0U     /* Dummy fid */
  91 #define IOHDRSZ         24      /* ample room for Twrite/Rread header (iounit) */
  92
  93 enum
  94 {
  95         Tversion =      100,
  96         Rversion,
  97         Tauth =         102,
  98         Rauth,
  99         Tattach =       104,
 100         Rattach,
 101         Terror =        106,    /* illegal */
 102         Rerror,
 103         Tflush =        108,
 104         Rflush,
 105         Twalk =         110,
 106         Rwalk,
 107         Topen =         112,
 108         Ropen,
 109         Tcreate =       114,
 110         Rcreate,
 111         Tread =         116,
 112         Rread,
 113         Twrite =        118,
 114         Rwrite,
 115         Tclunk =        120,
 116         Rclunk,
 117         Tremove =       122,
 118         Rremove,
 119         Tstat =         124,
 120         Rstat,
 121         Twstat =        126,
 122         Rwstat,
 123         Tmax,
 124 };
 125
 126 uint    convM2S(uchar*, uint, Fcall*);
 127 uint    convS2M(Fcall*, uchar*, uint);
 128 uint    sizeS2M(Fcall*);
 129
 130 int     statcheck(uchar *abuf, uint nbuf);
 131 uint    convM2D(uchar*, uint, Dir*, char*);
 132 uint    convD2M(Dir*, uchar*, uint);
 133 uint    sizeD2M(Dir*);
 134
 135 int     fcallfmt(Fmt*);
 136 int     dirfmt(Fmt*);
 137 int     dirmodefmt(Fmt*);
 138
 139 int     read9pmsg(int, void*, uint);
 140
 141 #pragma varargck        type    "F"     Fcall*
 142 #pragma varargck        type    "M"     ulong
 143 #pragma varargck        type    "D"     Dir*