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Add chardev-send-break monitor command

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Sending a break on a serial console can be useful for debugging the
guest. But not all chardev backends support sending breaks (only telnet
and mux do). The chardev-send-break command allows to send a break even
if using other backends.

Signed-off-by: Stefan Fritsch <sf@sfritsch.de>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170611074817.13621-1-sf@sfritsch.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Use 'send a break' in all 3 pieces of text as suggested by eblake
This commit is contained in:
Stefan Fritsch 2017-06-11 09:48:17 +02:00 • committed by Dr. David Alan Gilbert
parent 18f0828278
commit bd1d5ad9f9
7 changed files with 68 additions and 2 deletions
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12
chardev/char.c
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@ -951,6 +951,18 @@ void qmp_chardev_remove(const char *id, Error **errp)
object_unparent(OBJECT(chr));
}
void qmp_chardev_send_break(const char *id, Error **errp)
{
Chardev *chr;
chr = qemu_chr_find(id);
if (chr == NULL) {
error_setg(errp, "Chardev '%s' not found", id);
return;
}
qemu_chr_be_event(chr, CHR_EVENT_BREAK);
}
void qemu_chr_cleanup(void)
{
object_unparent(get_chardevs_root());