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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1783346344; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=iK6bDC7EaRdOs5PB/8RxC28zOLfBXwEkty0qN8zTwRE=; b=RNGyrsdmN9+7XdovJbM5qRUhjzHlgn1iB6T30ieIlibP/uWtZTzXlCahLU2TXUtESeyMSj p5Vm4zS4mBWMxwEn23HIP4MuJWStEAvqaeX+XlQPciPQ98uRTveN0rOD1HlbNmxO0Y7C15 g9cIWFnQ5NprurrT8gAyZKI5pcUWMqE= X-MC-Unique: Zsc1bMUbMueK1PPDsJuwAA-1 X-Mimecast-MFC-AGG-ID: Zsc1bMUbMueK1PPDsJuwAA_1783346339 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Christian Brauner , devel@lists.libvirt.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini , Peter Krempa , Markus Armbruster , "Dr. David Alan Gilbert" , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH v7 07/35] monitor: add 'chardev' property to Monitor base class Date: Mon, 6 Jul 2026 14:57:55 +0100 Message-ID: <20260706135824.2623960-8-berrange@redhat.com> In-Reply-To: <20260706135824.2623960-1-berrange@redhat.com> References: <20260706135824.2623960-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-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: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1783346443756158500 This is associates both QMP and HMP monitors with a character device backend. Reviewed-by: Marc-Andr=C3=A9 Lureau Tested-by: Peter Krempa Signed-off-by: Daniel P. Berrang=C3=A9 --- monitor/hmp.c | 24 ++++++++++-------------- monitor/monitor-internal.h | 2 ++ monitor/monitor.c | 36 ++++++++++++++++++++++++++++++++++++ monitor/qmp.c | 33 +++++++++++++++------------------ 4 files changed, 63 insertions(+), 32 deletions(-) diff --git a/monitor/hmp.c b/monitor/hmp.c index 1704166326..34a39b071c 100644 --- a/monitor/hmp.c +++ b/monitor/hmp.c @@ -1542,28 +1542,24 @@ static void monitor_readline_flush(void *opaque) void monitor_new_hmp(const char *id, const char *chardev_id, bool use_readline, Error **errp) { + ERRP_GUARD(); MonitorHMP *mon; g_autofree char *autoid =3D id ? NULL : monitor_compat_id(); - Chardev *chr; - Object *obj; + Object *obj =3D object_new_with_props(TYPE_MONITOR_HMP, + object_get_objects_root(), + id ? id : autoid, + errp, + "chardev", chardev_id, + NULL); =20 - chr =3D qemu_chr_find(chardev_id); - if (chr =3D=3D NULL) { - error_setg(errp, "chardev \"%s\" not found", chardev_id); - return; - } - - obj =3D object_new_with_props(TYPE_MONITOR_HMP, - object_get_objects_root(), - id ? id : autoid, - errp, - NULL); if (!obj) { return; } + mon =3D MONITOR_HMP(obj); =20 - if (!qemu_chr_fe_init(&mon->parent_obj.chr, chr, errp)) { + monitor_complete(MONITOR(mon), errp); + if (*errp) { object_unparent(OBJECT(mon)); return; } diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h index 05c1f2f5e0..145d52fd71 100644 --- a/monitor/monitor-internal.h +++ b/monitor/monitor-internal.h @@ -108,6 +108,7 @@ struct MonitorClass { =20 struct Monitor { Object parent; + char *chardev_id; CharFrontend chr; int suspend_cnt; /* Needs to be accessed atomically */ bool is_qmp; @@ -192,6 +193,7 @@ extern QmpCommandList qmp_commands, qmp_cap_negotiation= _commands; extern QemuMutex monitor_lock; extern MonitorList mon_list; =20 +void monitor_complete(Monitor *mon, Error **errp); void monitor_data_init(Monitor *mon, bool is_qmp, bool skip_flush, bool use_io_thread); void monitor_data_destroy(Monitor *mon); diff --git a/monitor/monitor.c b/monitor/monitor.c index cb0299a2f7..1648946c92 100644 --- a/monitor/monitor.c +++ b/monitor/monitor.c @@ -79,10 +79,31 @@ OBJECT_DEFINE_ABSTRACT_TYPE(Monitor, monitor, MONITOR, = OBJECT); =20 static void monitor_finalize(Object *obj) { + Monitor *mon =3D MONITOR(obj); + + g_free(mon->chardev_id); +} + +static char *monitor_get_chardev_id(Object *obj, Error **errp) +{ + Monitor *mon =3D MONITOR(obj); + + return g_strdup(mon->chardev_id); +} + +static void monitor_set_chardev_id(Object *obj, const char *str, Error **e= rrp) +{ + Monitor *mon =3D MONITOR(obj); + + g_free(mon->chardev_id); + mon->chardev_id =3D g_strdup(str); } =20 static void monitor_class_init(ObjectClass *cls, const void *data) { + object_class_property_add_str(cls, "chardev", + monitor_get_chardev_id, + monitor_set_chardev_id); } =20 static void monitor_init(Object *obj) @@ -738,6 +759,21 @@ char *monitor_compat_id(void) return g_strdup_printf("compat_monitor%d", monitor_device_index++); } =20 +void monitor_complete(Monitor *mon, Error **errp) +{ + if (mon->chardev_id) { + Chardev *chr =3D qemu_chr_find(mon->chardev_id); + if (chr =3D=3D NULL) { + error_setg(errp, "chardev \"%s\" not found", mon->chardev_id); + return; + } + + if (!qemu_chr_fe_init(&mon->chr, chr, errp)) { + return; + } + } +} + int monitor_new(MonitorOptions *opts, bool allow_hmp, Error **errp) { ERRP_GUARD(); diff --git a/monitor/qmp.c b/monitor/qmp.c index e2f841212b..df35b530ed 100644 --- a/monitor/qmp.c +++ b/monitor/qmp.c @@ -530,36 +530,33 @@ static void monitor_qmp_setup_handlers_bh(void *opaqu= e) void monitor_new_qmp(const char *id, const char *chardev_id, bool pretty, Error **errp) { + ERRP_GUARD(); MonitorQMP *mon; g_autofree char *autoid =3D id ? NULL : monitor_compat_id(); - Chardev *chr; - Object *obj; + Object *obj =3D object_new_with_props(TYPE_MONITOR_QMP, + object_get_objects_root(), + id ? id : autoid, + errp, + "chardev", chardev_id, + NULL); =20 - chr =3D qemu_chr_find(chardev_id); - if (chr =3D=3D NULL) { - error_setg(errp, "chardev \"%s\" not found", chardev_id); - return; - } - - obj =3D object_new_with_props(TYPE_MONITOR_QMP, - object_get_objects_root(), - id ? id : autoid, - errp, - NULL); if (!obj) { return; } - mon =3D MONITOR_QMP(obj); =20 - if (!qemu_chr_fe_init(&mon->parent_obj.chr, chr, errp)) { + mon =3D MONITOR_QMP(obj); + monitor_complete(MONITOR(mon), errp); + if (*errp) { object_unparent(OBJECT(mon)); return; } + qemu_chr_fe_set_echo(&mon->parent_obj.chr, true); =20 /* Note: we run QMP monitor in I/O thread when @chr supports that */ monitor_data_init(&mon->parent_obj, true, false, - qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT= )); + qemu_chr_has_feature(mon->parent_obj.chr.chr, + QEMU_CHAR_FEATURE_GCONTEXT)); =20 mon->pretty =3D pretty; =20 @@ -572,12 +569,12 @@ void monitor_new_qmp(const char *id, const char *char= dev_id, * Make sure the old iowatch is gone. It's possible when * e.g. the chardev is in client mode, with wait=3Don. */ - remove_fd_in_watch(chr); + remove_fd_in_watch(mon->parent_obj.chr.chr); /* * Clean up listener IO sources early to prevent racy fd * handling between the main thread and the I/O thread. */ - remove_listener_fd_in_watch(chr); + remove_listener_fd_in_watch(mon->parent_obj.chr.chr); /* * We can't call qemu_chr_fe_set_handlers() directly here * since chardev might be running in the monitor I/O --=20 2.55.0