2015-08-21 07:04:50 +00:00
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/*
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* QEMU Object Model - QObject wrappers
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* Author: Paolo Bonzini <pbonzini@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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2018-02-19 06:31:32 +00:00
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#include "qemu/osdep.h"
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include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Backports commit da34e65cb4025728566d6504a99916f6e7e1dd6a from qemu
2018-02-22 04:05:15 +00:00
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#include "qapi/error.h"
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2015-08-21 07:04:50 +00:00
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#include "qemu-common.h"
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#include "qom/object.h"
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#include "qom/qom-qobject.h"
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#include "qapi/visitor.h"
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#include "qapi/qmp-input-visitor.h"
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#include "qapi/qmp-output-visitor.h"
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void object_property_set_qobject(struct uc_struct *uc, Object *obj, QObject *value,
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const char *name, Error **errp)
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{
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2018-02-19 23:20:03 +00:00
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QmpInputVisitor *qiv;
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qapi: Use strict QMP input visitor in more places
The following uses of a QMP input visitor should be strict
(that is, excess keys in QDict input should be flagged if not
converted to QAPI):
- Testsuite code unrelated to explicitly testing non-strict
mode (test-qmp-commands, test-visitor-serialization); since
we want more code to be strict by default, having more tests
of strict mode doesn't hurt
- Code used for cloning QAPI objects (replay-input.c,
qemu-sockets.c); we are reparsing a QObject just barely
produced by the qmp output visitor and which therefore should
not have any garbage, so while it is extra work to be strict,
it validates that our clone is correct [note that a later patch
series will simplify these two uses by creating an actual
clone visitor that is much more efficient than a
generate/reparse cycle]
- qmp_object_add(), which calls into user_creatable_add_type().
Since command line parsing for '-object' uses the same
user_creatable_add_type() through the OptsVisitor, and that is
always strict, we want to ensure that any nested dictionaries
would be treated the same in QMP and from the command line (I
don't actually know if such nested dictionaries exist). Note
that on this code change, strictness only matters for nested
dictionaries (if even possible), since we already flag excess
input at the top level during an earlier object_property_set()
on an unknown key, whether from QemuOpts:
$ ./x86_64-softmmu/qemu-system-x86_64 -nographic -nodefaults -qmp stdio -object secret,id=sec0,data=letmein,format=raw,foo=bar
qemu-system-x86_64: -object secret,id=sec0,data=letmein,format=raw,foo=bar: Property '.foo' not found
or from QMP:
$ ./x86_64-softmmu/qemu-system-x86_64 -nographic -nodefaults -qmp stdio
{"QMP": {"version": {"qemu": {"micro": 93, "minor": 5, "major": 2}, "package": ""}, "capabilities": []}}
{"execute":"qmp_capabilities"}
{"return": {}}
{"execute":"object-add","arguments":{"qom-type":"secret","id":"sec0","props":{"format":"raw","data":"letmein","foo":"bar"}}}
{"error": {"class": "GenericError", "desc": "Property '.foo' not found"}}
The only remaining uses of non-strict input visits are:
- QMP 'qom-set' (which eventually executes
object_property_set_qobject()) - mark it as something to revisit
in the future (I didn't want to spend any more time on this patch
auditing if we have any QOM dictionary properties that might be
impacted, and couldn't easily prove whether this code path is
shared with anything else).
- test-qmp-input-visitor: explicit tests of non-strict mode. If
we later get rid of users that don't need strictness, then this
test should be merged with test-qmp-input-strict
Backports relevant parts of commit 240f64b6dc3346d044d7beb7cc3a53668ce47384 from qemu
2018-02-23 20:11:32 +00:00
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/* TODO: Should we reject, rather than ignore, excess input? */
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2018-02-23 20:09:51 +00:00
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qiv = qmp_input_visitor_new(value, false);
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2018-02-19 23:20:03 +00:00
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object_property_set(uc, obj, qmp_input_get_visitor(qiv), name, errp);
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2015-08-21 07:04:50 +00:00
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2018-02-19 23:20:03 +00:00
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qmp_input_visitor_cleanup(qiv);
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2015-08-21 07:04:50 +00:00
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}
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QObject *object_property_get_qobject(struct uc_struct *uc, Object *obj, const char *name,
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Error **errp)
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{
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QObject *ret = NULL;
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Error *local_err = NULL;
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2018-02-19 23:20:03 +00:00
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QmpOutputVisitor *qov;
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2015-08-21 07:04:50 +00:00
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2018-02-19 23:20:03 +00:00
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qov = qmp_output_visitor_new();
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object_property_get(uc, obj, qmp_output_get_visitor(qov), name, &local_err);
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2015-08-21 07:04:50 +00:00
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if (!local_err) {
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2018-02-19 23:20:03 +00:00
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ret = qmp_output_get_qobject(qov);
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2015-08-21 07:04:50 +00:00
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}
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error_propagate(errp, local_err);
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2018-02-19 23:20:03 +00:00
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qmp_output_visitor_cleanup(qov);
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2015-08-21 07:04:50 +00:00
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return ret;
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}
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