From 50b7b000c9171c1253c1c875f46f654c3c0e1fc8 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 10 Sep 2015 10:19:16 -0600 Subject: hmp: Allow for error message hints on HMP Commits 7216ae3d and d2828429 disabled some error message hints, all because a change to use modern error reporting meant that the hint would be output prior to the actual error. Fix this by making hints a first-class member of Error. For example, we are now back to the pleasant: $ qemu-system-x86_64 --nodefaults -S --vnc :0 --chardev null,id=, qemu-system-x86_64: --chardev null,id=,: Parameter 'id' expects an identifier Identifiers consist of letters, digits, '-', '.', '_', starting with a letter. Signed-off-by: Eric Blake Reviewed-by: Paolo Bonzini Message-Id: <1441901956-21991-1-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- qdev-monitor.c | 42 ++++++++++++++---------------------------- 1 file changed, 14 insertions(+), 28 deletions(-) (limited to 'qdev-monitor.c') diff --git a/qdev-monitor.c b/qdev-monitor.c index f9e2d62..0bf7f83 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -289,37 +289,35 @@ static Object *qdev_get_peripheral_anon(void) return dev; } -#if 0 /* conversion from qerror_report() to error_set() broke their use */ -static void qbus_list_bus(DeviceState *dev) +static void qbus_list_bus(DeviceState *dev, Error **errp) { BusState *child; const char *sep = " "; - error_printf("child buses at \"%s\":", - dev->id ? dev->id : object_get_typename(OBJECT(dev))); + error_append_hint(errp, "child buses at \"%s\":", + dev->id ? dev->id : object_get_typename(OBJECT(dev))); QLIST_FOREACH(child, &dev->child_bus, sibling) { - error_printf("%s\"%s\"", sep, child->name); + error_append_hint(errp, "%s\"%s\"", sep, child->name); sep = ", "; } - error_printf("\n"); } -static void qbus_list_dev(BusState *bus) +static void qbus_list_dev(BusState *bus, Error **errp) { BusChild *kid; const char *sep = " "; - error_printf("devices at \"%s\":", bus->name); + error_append_hint(errp, "devices at \"%s\":", bus->name); QTAILQ_FOREACH(kid, &bus->children, sibling) { DeviceState *dev = kid->child; - error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev))); - if (dev->id) - error_printf("/\"%s\"", dev->id); + error_append_hint(errp, "%s\"%s\"", sep, + object_get_typename(OBJECT(dev))); + if (dev->id) { + error_append_hint(errp, "/\"%s\"", dev->id); + } sep = ", "; } - error_printf("\n"); } -#endif static BusState *qbus_find_bus(DeviceState *dev, char *elem) { @@ -461,11 +459,7 @@ static BusState *qbus_find(const char *path, Error **errp) if (!dev) { error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found", elem); -#if 0 /* conversion from qerror_report() to error_set() broke this: */ - if (!monitor_cur_is_qmp()) { - qbus_list_dev(bus); - } -#endif + qbus_list_dev(bus, errp); return NULL; } @@ -483,11 +477,7 @@ static BusState *qbus_find(const char *path, Error **errp) if (dev->num_child_bus) { error_setg(errp, "Device '%s' has multiple child buses", elem); -#if 0 /* conversion from qerror_report() to error_set() broke this: */ - if (!monitor_cur_is_qmp()) { - qbus_list_bus(dev); - } -#endif + qbus_list_bus(dev, errp); } else { error_setg(errp, "Device '%s' has no child bus", elem); } @@ -503,11 +493,7 @@ static BusState *qbus_find(const char *path, Error **errp) bus = qbus_find_bus(dev, elem); if (!bus) { error_setg(errp, "Bus '%s' not found", elem); -#if 0 /* conversion from qerror_report() to error_set() broke this: */ - if (!monitor_cur_is_qmp()) { - qbus_list_bus(dev); - } -#endif + qbus_list_bus(dev, errp); return NULL; } } -- cgit v1.1