1 #include "stdio_impl.h"
2 #include <sys/ioctl.h>
3 
__stdout_write(FILE *f, const unsigned char *buf, size_t len)4 size_t __stdout_write(FILE *f, const unsigned char *buf, size_t len)
5 {
6 	struct winsize wsz;
7 	f->write = __stdio_write;
8 	/*
9 	 * write directly at first time.
10 	 * check f->flags & tty, and take effect later.
11 	 */
12 	size_t cnt = __stdio_write(f, buf, len);
13 
14 	if (!(f->flags & F_SVB) && __syscall(SYS_ioctl, f->fd, TIOCGWINSZ, &wsz))
15 		f->lbf = -1;
16 
17 	return cnt;
18 }
19