[libvirt] [PATCH] char: drop data written to a disconnected pty
When a serial port writes data to a pty that's disconnected, drop the
data and return the length dropped. This avoids triggering pointless
retries in callers like the 16550A serial_xmit(), and causes
qemu_chr_fe_write() to write all data to the log file, rather than
logging only while a pty client like virsh console happens to be
connected.
Signed-off-by: Ed Swierk <eswierk(a)skyportsystems.com>
---
qemu-char.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/qemu-char.c b/qemu-char.c
index 676944a..ccb6923 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1528,7 +1528,7 @@ static int pty_chr_write(CharDriverState *chr, const uint8_t *buf,
int len)
/* guest sends data, check for (re-)connect */
pty_chr_update_read_handler_locked(chr);
if (!s->connected) {
- return 0;
+ return len;
}
}
return io_channel_send(s->ioc, buf, len);
--
1.9.1