twrite.c - plan9port - [fork] Plan 9 from user space
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       ---
       twrite.c (1166B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <venti.h>
            4 #include <libsec.h>
            5 #include <thread.h>
            6 
            7 enum
            8 {
            9         // XXX What to do here?
           10         VtMaxLumpSize = 65535,
           11 };
           12 
           13 void
           14 usage(void)
           15 {
           16         fprint(2, "usage: write [-z] [-h host] [-t type] <datablock\n");
           17         threadexitsall("usage");
           18 }
           19 
           20 void
           21 threadmain(int argc, char *argv[])
           22 {
           23         char *host;
           24         int dotrunc, n, type;
           25         uchar *p, score[VtScoreSize];
           26         VtConn *z;
           27 
           28         fmtinstall('F', vtfcallfmt);
           29         fmtinstall('V', vtscorefmt);
           30 
           31         host = nil;
           32         dotrunc = 0;
           33         type = VtDataType;
           34         ARGBEGIN{
           35         case 'z':
           36                 dotrunc = 1;
           37                 break;
           38         case 'h':
           39                 host = EARGF(usage());
           40                 break;
           41         case 't':
           42                 type = atoi(EARGF(usage()));
           43                 break;
           44         default:
           45                 usage();
           46                 break;
           47         }ARGEND
           48 
           49         if(argc != 0)
           50                 usage();
           51 
           52         p = vtmallocz(VtMaxLumpSize+1);
           53         n = readn(0, p, VtMaxLumpSize+1);
           54         if(n > VtMaxLumpSize)
           55                 sysfatal("input too big: max block size is %d", VtMaxLumpSize);
           56         z = vtdial(host);
           57         if(z == nil)
           58                 sysfatal("could not connect to server: %r");
           59         if(vtconnect(z) < 0)
           60                 sysfatal("vtconnect: %r");
           61         if(dotrunc)
           62                 n = vtzerotruncate(type, p, n);
           63         if(vtwrite(z, score, type, p, n) < 0)
           64                 sysfatal("vtwrite: %r");
           65         vthangup(z);
           66         print("%V\n", score);
           67         threadexitsall(0);
           68 }