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#include <unistd.h>
#include <errno.h>
#include "file.h"
int getscreensize(int fd, int *rows, int *cols)
{
struct file_info *fp = &__file_info[fd];
if (fd >= NFILES || !fp->iop) {
errno = EBADF;
return -1;
}
*rows = fp->o.rows;
*cols = fp->o.cols;
if (!rows || !cols) {
errno = ENOTTY;
return -1;
}
return 0;
}
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