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[PATCH v3 7/9] qmp: add chardev-resize command
From: |
Szymon Lukasz |
Subject: |
[PATCH v3 7/9] qmp: add chardev-resize command |
Date: |
Mon, 29 Jun 2020 18:40:39 +0200 |
The managment software can use this command to notify QEMU about the
size of the terminal connected to a chardev, QEMU can then forward this
information to the guest if the chardev is connected to a virtio console
device.
Signed-off-by: Szymon Lukasz <noh4hss@gmail.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
---
chardev/char.c | 14 ++++++++++++++
qapi/char.json | 25 +++++++++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/chardev/char.c b/chardev/char.c
index 1dc22aca95..c1bdfc8b5f 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -1182,6 +1182,20 @@ void qmp_chardev_send_break(const char *id, Error **errp)
qemu_chr_be_event(chr, CHR_EVENT_BREAK);
}
+void qmp_chardev_resize(const char *id, uint16_t cols, uint16_t rows,
+ Error **errp)
+{
+ Chardev *chr;
+
+ chr = qemu_chr_find(id);
+ if (chr == NULL) {
+ error_setg(errp, "Chardev '%s' not found", id);
+ return;
+ }
+
+ qemu_chr_resize(chr, cols, rows);
+}
+
/*
* Add a timeout callback for the chardev (in milliseconds), return
* the GSource object created. Please use this to add timeout hook for
diff --git a/qapi/char.json b/qapi/char.json
index daceb20f84..dc2d6cab22 100644
--- a/qapi/char.json
+++ b/qapi/char.json
@@ -573,3 +573,28 @@
{ 'event': 'VSERPORT_CHANGE',
'data': { 'id': 'str',
'open': 'bool' } }
+
+##
+# @chardev-resize:
+#
+# Notifies a chardev about the current size of the terminal connected
+# to this chardev.
+#
+# @id: the chardev's ID, must exist
+# @cols: the number of columns
+# @rows: the number of rows
+#
+# Returns: Nothing on success
+#
+# Since: 5.1
+#
+# Example:
+#
+# -> { "execute": "chardev-resize", "arguments": { "id": "foo", "cols": 80,
"rows": 24 } }
+# <- { "return": {} }
+#
+##
+{ 'command': 'chardev-resize',
+ 'data': { 'id': 'str',
+ 'cols': 'uint16',
+ 'rows': 'uint16' } }
--
2.27.0
- [PATCH v3 0/9] virtio-console: notify about the terminal size, Szymon Lukasz, 2020/06/29
- [PATCH v3 2/9] chardev: add CHR_EVENT_RESIZE, Szymon Lukasz, 2020/06/29
- [PATCH v3 1/9] chardev: add cols, rows fields, Szymon Lukasz, 2020/06/29
- [PATCH v3 3/9] chardev: add qemu_chr_resize(), Szymon Lukasz, 2020/06/29
- [PATCH v3 4/9] char-mux: add support for the terminal size, Szymon Lukasz, 2020/06/29
- [PATCH v3 7/9] qmp: add chardev-resize command,
Szymon Lukasz <=
- [PATCH v3 5/9] main-loop: change the handling of SIGWINCH, Szymon Lukasz, 2020/06/29
- [PATCH v3 6/9] char-stdio: add support for the terminal size, Szymon Lukasz, 2020/06/29
- [PATCH v3 8/9] virtio-serial-bus: add terminal resize messages, Szymon Lukasz, 2020/06/29
- [PATCH v3 9/9] virtio-console: notify the guest about terminal resizes, Szymon Lukasz, 2020/06/29