com32/lib/sys/screensize.c

   1 #include <unistd.h>
   2 #include <errno.h>
   3 #include "file.h"
   4
   5 int getscreensize(int fd, int *rows, int *cols)
   6 {
   7   struct file_info *fp = &__file_info[fd];
   8
   9   if ( fd >= NFILES || !fp->iop ) {
  10     errno = EBADF;
  11     return -1;
  12   }
  13
  14   *rows = fp->o.rows;
  15   *cols = fp->o.cols;
  16
  17   if (!rows || !cols) {
  18     errno = ENOTTY;
  19     return -1;
  20   }
  21
  22   return 0;
  23 }