kvm tools: Use STDIN_FILENO instead of fileno(stdin)

To cleanup the serial console emulation code, use STDIN_FILENO which is POSIX
API instead of fileno(stdin) which is libc API.

Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/8250-serial.c b/tools/kvm/8250-serial.c
index 232f6e86eb8ce1e067cf859a17d680244d4fc495..f0aa69e132c79d4892db16d1de4b6d7165d1a100 100644 (file)
--- a/tools/kvm/8250-serial.c
+++ b/tools/kvm/8250-serial.c
@@ -80,10 +80,10 @@ static void serial8250__receive(struct kvm *self, struct serial8250_device *dev)
        if (dev->lsr & UART_LSR_DR)
                return;
 
-       if (!is_readable(fileno(stdin)))
+       if (!is_readable(STDIN_FILENO))
                return;
 
-       c               = read_char(fileno(stdin));
+       c               = read_char(STDIN_FILENO);
        if (c < 0)
                return;