qemu-patch-raspberry4/stubs/monitor-core.c
Kevin Wolf f27a9bb3e9 qmp: Fail gracefully if chardev is already in use
Trying to attach a QMP monitor to a chardev that is already in use
results in a crash because monitor_init_qmp() passes &error_abort to
qemu_chr_fe_init():

$ ./x86_64-softmmu/qemu-system-x86_64 --chardev stdio,id=foo --mon foo,mode=control --mon foo,mode=control
Unexpected error in qemu_chr_fe_init() at chardev/char-fe.c:220:
qemu-system-x86_64: --mon foo,mode=control: Device 'foo' is in use
Abgebrochen (Speicherabzug geschrieben)

Fix this by allowing monitor_init_qmp() to return an error and passing
any error in qemu_chr_fe_init() to its caller instead of aborting.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200224143008.13362-18-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-03-06 17:21:28 +01:00

22 lines
349 B
C

#include "qemu/osdep.h"
#include "monitor/monitor.h"
#include "qemu-common.h"
#include "qapi/qapi-emit-events.h"
__thread Monitor *cur_mon;
void monitor_init_qmp(Chardev *chr, bool pretty, Error **errp)
{
}
void qapi_event_emit(QAPIEvent event, QDict *qdict)
{
}
int monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
{
abort();
}