From 4f6e0201962f4a969d1c950bdd168fc9b43ab746 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Fri, 21 Apr 2023 18:25:53 +0200
Subject: [PATCH] kernel+libc: Add framebuffer ioctls

---
 kernel/src/fs/devices/FramebufferDevice.cpp | 11 +++++++++--
 libc/include/bits/ioctl-defs.h              | 11 +++++++++++
 libc/include/sys/ioctl.h                    |  2 ++
 3 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 libc/include/bits/ioctl-defs.h

diff --git a/kernel/src/fs/devices/FramebufferDevice.cpp b/kernel/src/fs/devices/FramebufferDevice.cpp
index ac51e298..852c8395 100644
--- a/kernel/src/fs/devices/FramebufferDevice.cpp
+++ b/kernel/src/fs/devices/FramebufferDevice.cpp
@@ -1,5 +1,6 @@
 #include "fs/devices/FramebufferDevice.h"
 #include "video/Framebuffer.h"
+#include <bits/ioctl-defs.h>
 #include <luna/CString.h>
 
 Result<SharedPtr<Device>> FramebufferDevice::create()
@@ -31,7 +32,13 @@ bool FramebufferDevice::blocking() const
     return false;
 }
 
-Result<u64> FramebufferDevice::ioctl(int, void*)
+Result<u64> FramebufferDevice::ioctl(int request, void*)
 {
-    return err(EINVAL);
+    switch (request)
+    {
+    case FB_GET_WIDTH: return (u64)Framebuffer::width();
+    case FB_GET_HEIGHT: return (u64)Framebuffer::height();
+    case FB_GET_SCANLINE: return (u64)Framebuffer::scanline();
+    default: return err(EINVAL);
+    }
 }
diff --git a/libc/include/bits/ioctl-defs.h b/libc/include/bits/ioctl-defs.h
new file mode 100644
index 00000000..29c20bde
--- /dev/null
+++ b/libc/include/bits/ioctl-defs.h
@@ -0,0 +1,11 @@
+/* bits/ioctl-defs.h: IO device control requests. */
+
+#ifndef _BITS_IOCTL_DEFS_H
+#define _BITS_IOCTL_DEFS_H
+
+/* Framebuffer requests. */
+#define FB_GET_WIDTH 0
+#define FB_GET_HEIGHT 1
+#define FB_GET_SCANLINE 2
+
+#endif
diff --git a/libc/include/sys/ioctl.h b/libc/include/sys/ioctl.h
index 6763b435..d8796eab 100644
--- a/libc/include/sys/ioctl.h
+++ b/libc/include/sys/ioctl.h
@@ -3,6 +3,8 @@
 #ifndef _SYS_IOCTL_H
 #define _SYS_IOCTL_H
 
+#include <bits/ioctl-defs.h>
+
 #ifdef __cplusplus
 extern "C"
 {