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pty: Fix byte loss bug when connecting to pty 

When trying to print data to the pty, we first check if it is connected.
If not, we try to reconnect, but we drop the pending data even if we
have successfully reconnected; this makes us lose the first byte of the very
first transmission.
This small fix addresses the issue by checking once more if the pty is connected
after having tried to reconnect.

Signed-off-by: Sebastian Tanase <sebastian.tanase@openwide.fr>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Sebastian Tanase 2014-07-28 13:39:14 +02:00 committed by Gerd Hoffmann
parent fd884c0765
commit cf7330c759
1 changed files with 3 additions and 1 deletions
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4
qemu-char.c
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@ -1160,7 +1160,9 @@ static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
if (!s->connected) {
/* guest sends data, check for (re-)connect */
pty_chr_update_read_handler_locked(chr);
return 0;
if (!s->connected) {
return 0;
}
}
return io_channel_send(s->fd, buf, len);
}