From 0fb124dbfa135945fb892d0d2b7a427cdc59220d Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 25 Mar 2021 15:33:08 +0000 Subject: machine: Provide a function to check the dynamic sysbus allowlist Provide a new function dynamic_sysbus_dev_allowed() which checks the per-machine list of permitted dynamic sysbus devices and returns a boolean result indicating whether the device is allowed. We can use this in the implementation of validate_sysbus_device(), but we will also need it so that machine hotplug callbacks can validate devices rather than assuming that any sysbus device might be hotpluggable into the platform bus. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Mark Cave-Ayland Reviewed-by: Eric Auger Message-id: 20210325153310.9131-3-peter.maydell@linaro.org --- hw/core/machine.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'hw/core') diff --git a/hw/core/machine.c b/hw/core/machine.c index 9935c6d..8d97094 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -529,20 +529,31 @@ void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type) QAPI_LIST_PREPEND(mc->allowed_dynamic_sysbus_devices, g_strdup(type)); } -static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque) +bool device_is_dynamic_sysbus(MachineClass *mc, DeviceState *dev) { - MachineState *machine = opaque; - MachineClass *mc = MACHINE_GET_CLASS(machine); bool allowed = false; strList *wl; + Object *obj = OBJECT(dev); + + if (!object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE)) { + return false; + } for (wl = mc->allowed_dynamic_sysbus_devices; !allowed && wl; wl = wl->next) { - allowed |= !!object_dynamic_cast(OBJECT(sbdev), wl->value); + allowed |= !!object_dynamic_cast(obj, wl->value); } - if (!allowed) { + return allowed; +} + +static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque) +{ + MachineState *machine = opaque; + MachineClass *mc = MACHINE_GET_CLASS(machine); + + if (!device_is_dynamic_sysbus(mc, DEVICE(sbdev))) { error_report("Option '-device %s' cannot be handled by this machine", object_class_get_name(object_get_class(OBJECT(sbdev)))); exit(1); -- cgit v1.1