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[185.47.220.165]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b879513e8d1sm1006970466b.2.2026.01.18.19.28.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Jan 2026 19:28:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768793319; x=1769398119; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=NNa7JchBYbdWd327kanvveizXHw1iCkukScOekjsgvA=; b=Eb2evHKopx8/F/L5eO8xzNd8aGVinsqiAXQqfxm2uo0I3/Yxuh7rb86tcx7pqimSdC ouXgZ/5hZI3o756G3hMpPU3r7EVPVL8+CQz/TsIaXaVdGN+shnFgsoQP5Eo/yys+SL1w mXwbcX8MDRYCusGSCVrkQwTtT34/RH2xSj+fBpmH22T3gkHkhymwXQ2LDF8yk148YAYX J3KMF15IbcUmNkFF8YVOUZg79lTsil09hQVbKjFlTHkfjn/ezI0ZFZqPj7/e2o0D0zck xK4h2lke1nVjJfh1b4cGRYo80slSB268qMcNwdKm/Z9siyVGGYfFiuZ0iej085wLk7t1 IA3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768793319; x=1769398119; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=NNa7JchBYbdWd327kanvveizXHw1iCkukScOekjsgvA=; b=TXu/qAwywaLeDjA71Mdekji+yRJrnalT84OdAsnknBZr2wWERqhrl8qm2ABJx8EB1b oXMIE3Pks9K0idljwKxwripS2bV99Pq+SycymHBxe6HMw8cn4ckOqauKKcs81uWB+Hr3 leZAqX0hBscPXJ2e2HPay+gKvNTngnO2eNchT+/vZpXFD5lTm+PUVEUjHObG2Ly1sqkI rO+IrEWZrmhYfQON5qWgCl988SSMBMYre142nuXGSzvQU1Xn2MDwWfHF/0jLCfXQwtvf Q2wiMvcKiLWJ7RM7eM4d+1tuWPzIzzq5NoJjp+cpE6jehvnrR8WETf8S2OaK/kmkBhuA NJxA== X-Gm-Message-State: AOJu0YxMqSwVtk4JDZ4YhdXO4EpLBm5SxZnyFWTU8d0ngEWKZuJW4CUn 7SK+UOjsD/sJVI6iP4Wzlh/4lgmuRwmYBl1jpEWAGUvK+9zcRWIyZe/+ X-Gm-Gg: AY/fxX60huXGzvkSa6Grp1TOyzrRxlM4QDk4d5TAVqIjvQlxwzfXtZqA8h3Dibs1ZW0 e50pyP/4aKHONTWGxik1lwDdnOr7GN9JLPjJDZ3UI7XcYpvyIxs3ljMFixVuYzGzyiwtz7uLCQd QVJndOHHzz4RE9ogU7E+swNjc9i96Bh5Tct8h+1HbOed7l3QtrUrwfCtN78Y3sSQXRU8U/sEQty F/vVGiiP6FKy+ZvQUfn/M3tg/JxZyMeoSPb+yZ6+izV0WbuXROM+ihTYeN+bNi+yRU6AQbrElUn CaduP4P/4xRrLUuwoRp/rszi1mfELdyxLpXEvAFmEtiPBO3eFSCM3k7WQvhOSw6/BNuAx9jto9I x/R51bhjKOuacxSWPEDKnPRMLt0ftHmNbnUpPDa1+Y9gszDuPRLzCTDm0OKNCDcvdYBQE1ncAEC eU6ehH4ji9dxEXpl4m54SKjQnXRirIyRoRlpgzA73C X-Received: by 2002:a17:907:2d9e:b0:b87:908:9aca with SMTP id a640c23a62f3a-b87968a9870mr788941366b.9.1768793319326; Sun, 18 Jan 2026 19:28:39 -0800 (PST) From: Filip Hejsek Date: Mon, 19 Jan 2026 04:27:45 +0100 Subject: [PATCH v6 02/12] chardev: add CHR_EVENT_RESIZE MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260119-console-resize-v6-2-33a7b0330a7a@gmail.com> References: <20260119-console-resize-v6-0-33a7b0330a7a@gmail.com> In-Reply-To: <20260119-console-resize-v6-0-33a7b0330a7a@gmail.com> To: qemu-devel@nongnu.org Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Paolo Bonzini , "Michael S. Tsirkin" , Laurent Vivier , Amit Shah , Markus Armbruster , Eric Blake , Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Yanan Wang , Zhao Liu , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Maximilian Immanuel Brandtner , Szymon Lukasz X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1768793314; l=8384; i=filip.hejsek@gmail.com; s=20250912; h=from:subject:message-id; bh=HeogtEK+9//Pdju/Fyjpqc6qE812kC26MsPD8+icalE=; b=Tty93DoZounl1Npu32cElY8aZfGnSjD1Hzffdav1X1QCjY16eqFnZ35UlS9GowJ5Uz7ygwh7m n2Yqm/F3TjQB4S3V1bswyJEXPnTM4oJ+n6opOlxtTYUQjzKlQmftyaY X-Developer-Key: i=filip.hejsek@gmail.com; a=ed25519; pk=nakB8gEK3oi+Q/5dBTMCy/LgZL47NP60z1jeDR6O/WU= 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=lists.gnu.org; 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=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::62b; envelope-from=filip.hejsek@gmail.com; helo=mail-ej1-x62b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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 @gmail.com) X-ZM-MESSAGEID: 1768793768767158500 From: Szymon Lukasz Add a new chardev event, CHR_EVENT_RESIZE, which a backend should trigger if it detects the size of the connected terminal changed. Signed-off-by: Szymon Lukasz [Filip: add note that only the focused frontend gets the event] Signed-off-by: Filip Hejsek --- backends/cryptodev-vhost-user.c | 1 + chardev/char.c | 1 + hw/block/vhost-user-blk.c | 1 + hw/char/terminal3270.c | 1 + hw/char/virtio-console.c | 1 + hw/ipmi/ipmi_bmc_extern.c | 1 + hw/scsi/vhost-user-scsi.c | 1 + hw/usb/ccid-card-passthru.c | 1 + hw/usb/dev-serial.c | 1 + hw/usb/redirect.c | 1 + hw/virtio/vhost-user-base.c | 1 + hw/virtio/vhost-user-scmi.c | 1 + include/chardev/char.h | 6 ++++++ monitor/hmp.c | 1 + monitor/qmp.c | 1 + net/passt.c | 1 + net/vhost-user.c | 1 + 17 files changed, 22 insertions(+) diff --git a/backends/cryptodev-vhost-user.c b/backends/cryptodev-vhost-use= r.c index cc478d9902..36564d4307 100644 --- a/backends/cryptodev-vhost-user.c +++ b/backends/cryptodev-vhost-user.c @@ -173,6 +173,7 @@ static void cryptodev_vhost_user_event(void *opaque, QE= MUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/chardev/char.c b/chardev/char.c index 3e432195a5..0f493d793f 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -75,6 +75,7 @@ void qemu_chr_be_event(Chardev *s, QEMUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 4d81d2dc34..a460d6ed33 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -412,6 +412,7 @@ static void vhost_user_blk_event(void *opaque, QEMUChrE= vent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/char/terminal3270.c b/hw/char/terminal3270.c index 1d857bad9b..c212fd1aac 100644 --- a/hw/char/terminal3270.c +++ b/hw/char/terminal3270.c @@ -172,6 +172,7 @@ static void chr_event(void *opaque, QEMUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/char/virtio-console.c b/hw/char/virtio-console.c index 25db0f019b..dcfe5830f9 100644 --- a/hw/char/virtio-console.c +++ b/hw/char/virtio-console.c @@ -168,6 +168,7 @@ static void chr_event(void *opaque, QEMUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/ipmi/ipmi_bmc_extern.c b/hw/ipmi/ipmi_bmc_extern.c index fa08ed6c21..bd7c61b2d2 100644 --- a/hw/ipmi/ipmi_bmc_extern.c +++ b/hw/ipmi/ipmi_bmc_extern.c @@ -436,6 +436,7 @@ static void chr_event(void *opaque, QEMUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index 3612897d4b..5601097bc9 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -226,6 +226,7 @@ static void vhost_user_scsi_event(void *opaque, QEMUChr= Event event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/usb/ccid-card-passthru.c b/hw/usb/ccid-card-passthru.c index 5ab7855272..3f4052ec82 100644 --- a/hw/usb/ccid-card-passthru.c +++ b/hw/usb/ccid-card-passthru.c @@ -323,6 +323,7 @@ static void ccid_card_vscard_event(void *opaque, QEMUCh= rEvent event) case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: case CHR_EVENT_CLOSED: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c index b238cb7937..98d2abbd56 100644 --- a/hw/usb/dev-serial.c +++ b/hw/usb/dev-serial.c @@ -576,6 +576,7 @@ static void usb_serial_event(void *opaque, QEMUChrEvent= event) break; case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c index fda5bbca67..34ab8339e1 100644 --- a/hw/usb/redirect.c +++ b/hw/usb/redirect.c @@ -1390,6 +1390,7 @@ static void usbredir_chardev_event(void *opaque, QEMU= ChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/virtio/vhost-user-base.c b/hw/virtio/vhost-user-base.c index 01ab9ca56b..fd3a9d6265 100644 --- a/hw/virtio/vhost-user-base.c +++ b/hw/virtio/vhost-user-base.c @@ -267,6 +267,7 @@ static void vub_event(void *opaque, QEMUChrEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/hw/virtio/vhost-user-scmi.c b/hw/virtio/vhost-user-scmi.c index f9264c4374..180787ec6d 100644 --- a/hw/virtio/vhost-user-scmi.c +++ b/hw/virtio/vhost-user-scmi.c @@ -214,6 +214,7 @@ static void vu_scmi_event(void *opaque, QEMUChrEvent ev= ent) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/include/chardev/char.h b/include/chardev/char.h index 237238e5a0..2c139f07dc 100644 --- a/include/chardev/char.h +++ b/include/chardev/char.h @@ -22,6 +22,12 @@ typedef enum { CHR_EVENT_OPENED, /* new connection established */ CHR_EVENT_MUX_IN, /* mux-focus was set to this terminal */ CHR_EVENT_MUX_OUT, /* mux-focus will move on */ + CHR_EVENT_RESIZE, /* + * the size of the terminal connected to + * the chardev has changed. NOTE: this event is only + * sent to the focused frontend, so you should also + * update the size on receiving CHR_EVENT_MUX_IN. + */ CHR_EVENT_CLOSED /* connection closed. NOTE: currently this event * is only bound to the read port of the chardev. * Normally the read port and write port of a diff --git a/monitor/hmp.c b/monitor/hmp.c index 4caafbc714..dea912092d 100644 --- a/monitor/hmp.c +++ b/monitor/hmp.c @@ -1445,6 +1445,7 @@ static void monitor_event(void *opaque, QEMUChrEvent = event) break; =20 case CHR_EVENT_BREAK: + case CHR_EVENT_RESIZE: /* Ignored */ break; } diff --git a/monitor/qmp.c b/monitor/qmp.c index 687019811f..3d5ab8ff4f 100644 --- a/monitor/qmp.c +++ b/monitor/qmp.c @@ -486,6 +486,7 @@ static void monitor_qmp_event(void *opaque, QEMUChrEven= t event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/net/passt.c b/net/passt.c index 9ed811a514..a3e239f306 100644 --- a/net/passt.c +++ b/net/passt.c @@ -421,6 +421,7 @@ static void passt_vhost_user_event(void *opaque, QEMUCh= rEvent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } diff --git a/net/vhost-user.c b/net/vhost-user.c index a4bb49bbcf..0b8df2ee30 100644 --- a/net/vhost-user.c +++ b/net/vhost-user.c @@ -367,6 +367,7 @@ static void net_vhost_user_event(void *opaque, QEMUChrE= vent event) case CHR_EVENT_BREAK: case CHR_EVENT_MUX_IN: case CHR_EVENT_MUX_OUT: + case CHR_EVENT_RESIZE: /* Ignore */ break; } --=20 2.52.0