1#include "stdio_impl.h"
 2#include <sys/ioctl.h>
 3#ifdef __wasilibc_unmodified_upstream // use isatty rather than manual ioctl
 4#else
 5#include <__function___isatty.h>
 6#endif
 7
 8size_t __stdout_write(FILE *f, const unsigned char *buf, size_t len)
 9{
10#ifdef __wasilibc_unmodified_upstream // use isatty rather than manual ioctl
11	struct winsize wsz;
12#endif
13	f->write = __stdio_write;
14#ifdef __wasilibc_unmodified_upstream // use isatty rather than manual ioctl
15	if (!(f->flags & F_SVB) && __syscall(SYS_ioctl, f->fd, TIOCGWINSZ, &wsz))
16#else
17	if (!(f->flags & F_SVB) && !__isatty(f->fd))
18#endif
19		f->lbf = -1;
20	return __stdio_write(f, buf, len);
21}