sys/src/libc/9sys/sysname.c

   1 #include        <u.h>
   2 #include        <libc.h>
   3
   4 char*
   5 sysname(void)
   6 {
   7         int f, n;
   8         static char b[128];
   9
  10         if(b[0])
  11                 return b;
  12
  13         f = open("/dev/sysname", OREAD|OCEXEC);
  14         if(f >= 0) {
  15                 n = read(f, b, sizeof(b)-1);
  16                 if(n > 0)
  17                         b[n] = 0;
  18                 close(f);
  19         }
  20         return b;
  21 }