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auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/05 01:25:11 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.733, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Kevin Wolf , Eduardo Habkost , qemu-block@nongnu.org, qemu-devel@nongnu.org, Gerd Hoffmann , Paolo Bonzini , Laszlo Ersek Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Oct 05, 2020 at 12:54:40PM +0200, Philippe Mathieu-Daudé wrote: > While the FW_CFG_DATA_GENERATOR_INTERFACE is only consumed > by a device only available using system-mode (fw_cfg), it is > implemented by a crypto component (tls-cipher-suites) which > is always available when crypto is used. > > Commit 69699f3055 introduced the following error in the > qemu-storage-daemon binary: > > $ echo -e \ > '{"execute": "qmp_capabilities"}\r\n{"execute": "qom-list-types"}\r\n{"execute": "quit"}\r\n' \ > | storage-daemon/qemu-storage-daemon --chardev stdio,id=qmp0 --monitor qmp0 > {"QMP": {"version": {"qemu": {"micro": 50, "minor": 1, "major": 5}, "package": ""}, "capabilities": ["oob"]}} > {"return": {}} > missing interface 'fw_cfg-data-generator' for object 'tls-creds' > Aborted (core dumped) > > Since QOM dependencies are resolved at runtime, this issue > could not be triggered at linktime, and we don't have test > running the qemu-storage-daemon binary. > > Fix by always registering the QOM interface. > > Reported-by: Kevin Wolf > Fixes: 69699f3055 ("crypto/tls-cipher-suites: Produce fw_cfg consumable blob") > Signed-off-by: Philippe Mathieu-Daudé > --- > I first used: > > +if config_host.has_key('CONFIG_GNUTLS') or have_system > + qom_ss.add(files('fw_cfg_interface.c')) > +endif > > but then realized anything could implement a QOM interface, > so better keep this generic. > --- > hw/nvram/fw_cfg.c | 7 ------- > qom/fw_cfg_interface.c | 15 +++++++++++++++ I feel this should be left in hw/nvram, but still added to qom_ss. The code location should reflect the functional area and maintainership, so we shouldn't move code just to satisfy linkage problems. > MAINTAINERS | 1 + > qom/meson.build | 5 +++++ > 4 files changed, 21 insertions(+), 7 deletions(-) > create mode 100644 qom/fw_cfg_interface.c > > diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c > index 0e95d057fd..08539a1aab 100644 > --- a/hw/nvram/fw_cfg.c > +++ b/hw/nvram/fw_cfg.c > @@ -1360,18 +1360,11 @@ static const TypeInfo fw_cfg_mem_info = { > .class_init = fw_cfg_mem_class_init, > }; > > -static const TypeInfo fw_cfg_data_generator_interface_info = { > - .parent = TYPE_INTERFACE, > - .name = TYPE_FW_CFG_DATA_GENERATOR_INTERFACE, > - .class_size = sizeof(FWCfgDataGeneratorClass), > -}; > - > static void fw_cfg_register_types(void) > { > type_register_static(&fw_cfg_info); > type_register_static(&fw_cfg_io_info); > type_register_static(&fw_cfg_mem_info); > - type_register_static(&fw_cfg_data_generator_interface_info); > } > > type_init(fw_cfg_register_types) > diff --git a/qom/fw_cfg_interface.c b/qom/fw_cfg_interface.c > new file mode 100644 > index 0000000000..2b19502ffe > --- /dev/null > +++ b/qom/fw_cfg_interface.c > @@ -0,0 +1,15 @@ > +#include "qemu/osdep.h" > +#include "hw/nvram/fw_cfg.h" > + > +static const TypeInfo fw_cfg_data_generator_interface_info = { > + .parent = TYPE_INTERFACE, > + .name = TYPE_FW_CFG_DATA_GENERATOR_INTERFACE, > + .class_size = sizeof(FWCfgDataGeneratorClass), > +}; > + > +static void fw_cfg_register_types(void) > +{ > + type_register_static(&fw_cfg_data_generator_interface_info); > +} > + > +type_init(fw_cfg_register_types) > diff --git a/MAINTAINERS b/MAINTAINERS > index b76fb31861..9c89d54b41 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -2055,6 +2055,7 @@ R: Gerd Hoffmann > S: Supported > F: docs/specs/fw_cfg.txt > F: hw/nvram/fw_cfg.c > +F: qom/fw_cfg_interface.c > F: stubs/fw_cfg.c > F: include/hw/nvram/fw_cfg.h > F: include/standard-headers/linux/qemu_fw_cfg.h > diff --git a/qom/meson.build b/qom/meson.build > index a1cd03c82c..7335f8c8a2 100644 > --- a/qom/meson.build > +++ b/qom/meson.build > @@ -7,6 +7,11 @@ qom_ss.add(files( > 'qom-qobject.c', > )) > > +# interfaces any object might implement > +qom_ss.add(files( > + 'fw_cfg_interface.c', > +)) > + > qmp_ss.add(files('qom-qmp-cmds.c')) > softmmu_ss.add(files('qom-hmp-cmds.c')) > > -- > 2.26.2 > Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|