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[185.47.220.165]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a00cf8f93csm97948635e9.5.2026.09.29.09.40.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2026 09:40:31 -0700 (PDT) From: Filip Hejsek Date: Tue, 29 Sep 2026 18:38:29 +0200 Subject: [PATCH v8 01/12] chardev: add cols, rows fields MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260929-console-resize-v8-1-2ff9183f8750@gmail.com> References: <20260929-console-resize-v8-0-2ff9183f8750@gmail.com> In-Reply-To: <20260929-console-resize-v8-0-2ff9183f8750@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 , Yanan Wang , Zhao Liu , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Maximilian Immanuel Brandtner , Dominique Martinet , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Szymon Lukasz X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1790700030; l=2201; i=filip.hejsek@gmail.com; s=20250912; h=from:subject:message-id; bh=t7htNSgqNPHw6qhkEHekMIj+qcr4FpFc1lUoQVqaq/E=; b=UeBCnc37/BYGVP2pPx4Ze+VysdDIaLQ0WLvLlLYCiX0YQ9HCvtYpiJrg8wOlcBpgv07uTmWFF MMaPU6h6m7MCxPLhdGEsD1UxZir7zsMWv9qLWSe8TkaH9JxxIpENti5 X-Developer-Key: i=filip.hejsek@gmail.com; a=ed25519; pk=nakB8gEK3oi+Q/5dBTMCy/LgZL47NP60z1jeDR6O/WU= Received-SPF: pass client-ip=2a00:1450:4864:31::11; envelope-from=filip.hejsek@gmail.com; helo=mail-wm2-x11.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Szymon Lukasz These fields should be interpreted as the size of the terminal connected to a given chardev. Signed-off-by: Szymon Lukasz Reviewed-by: Daniel P. Berrangé [Filip: CharBackend -> CharFrontend] Signed-off-by: Filip Hejsek --- chardev/char-fe.c | 13 +++++++++++++ include/chardev/char-fe.h | 10 ++++++++++ include/chardev/char.h | 1 + 3 files changed, 24 insertions(+) diff --git a/chardev/char-fe.c b/chardev/char-fe.c index a44f267373..c61c91f779 100644 --- a/chardev/char-fe.c +++ b/chardev/char-fe.c @@ -329,6 +329,19 @@ void qemu_chr_fe_set_echo(CharFrontend *c, bool echo) } } +void qemu_chr_fe_get_winsize(CharFrontend *c, uint16_t *cols, uint16_t *rows) +{ + Chardev *chr = c->chr; + + if (chr) { + *cols = chr->cols; + *rows = chr->rows; + } else { + *cols = 0; + *rows = 0; + } +} + void qemu_chr_fe_set_open(CharFrontend *c, bool is_open) { Chardev *chr = c->chr; diff --git a/include/chardev/char-fe.h b/include/chardev/char-fe.h index a82894e1d5..e4a3801e7d 100644 --- a/include/chardev/char-fe.h +++ b/include/chardev/char-fe.h @@ -168,6 +168,16 @@ int qemu_chr_fe_wait_connected(CharFrontend *c, Error **errp); */ void qemu_chr_fe_set_echo(CharFrontend *c, bool echo); +/** + * qemu_chr_fe_get_winsize: + * @cols: the address for storing columns + * @rows: the address for storing rows + * + * Get the size of the terminal connected to the chardev backend. + * Returns *cols = *rows = 0, if no associated Chardev. + */ +void qemu_chr_fe_get_winsize(CharFrontend *c, uint16_t *cols, uint16_t *rows); + /** * qemu_chr_fe_set_open: * @c: a CharFrontend diff --git a/include/chardev/char.h b/include/chardev/char.h index 7377d8e60a..6394ec2ffe 100644 --- a/include/chardev/char.h +++ b/include/chardev/char.h @@ -66,6 +66,7 @@ struct Chardev { bool logtimestamp; bool log_line_start; int be_open; + uint16_t cols, rows; /* used to coordinate the chardev-change special-case: */ bool handover_yank_instance; GSource *gsource; -- 2.55.0