[PULL 1/7] char-stdio: Fix QMP default for 'signal'

[Kevin Wolf <kwolf@redhat.com>]

Commit 02c4bdf1 tried to make signal=on the default for stdio chardevs
except for '-serial mon:stdio', but it forgot about QMP and accidentally
switched the QMP default from true (except for -nographic) to false
(always). The documentation was kept unchanged and still describes the
opposite of the old behaviour (which is an even older documentation
bug).

Fix all of this by making signal=true the default in ChardevStdio and
documenting it as such.

Fixes: 02c4bdf1d2ca8c02a9bae16398f260b5c08d08bf
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201023101222.250147-2-kwolf@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 qapi/char.json       | 3 +--
 chardev/char-stdio.c | 4 +---
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/qapi/char.json b/qapi/char.json
index b4d66ec90b..43486d1daa 100644
--- a/qapi/char.json
+++ b/qapi/char.json
@@ -321,8 +321,7 @@
 # Configuration info for stdio chardevs.
 #
 # @signal: Allow signals (such as SIGINT triggered by ^C)
-#          be delivered to qemu.  Default: true in -nographic mode,
-#          false otherwise.
+#          be delivered to qemu.  Default: true.
 #
 # Since: 1.5
 ##
diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c
index 82eaebc1db..403da308c9 100644
--- a/chardev/char-stdio.c
+++ b/chardev/char-stdio.c
@@ -112,9 +112,7 @@ static void qemu_chr_open_stdio(Chardev *chr,
 
     qemu_chr_open_fd(chr, 0, 1);
 
-    if (opts->has_signal) {
-        stdio_allow_signal = opts->signal;
-    }
+    stdio_allow_signal = !opts->has_signal || opts->signal;
     qemu_chr_set_echo_stdio(chr, false);
 }
 #endif
-- 
2.28.0