From 5e46122a821344e0c3377e5d7d7ea0ebd6bfd267 Mon Sep 17 00:00:00 2001
From: Conrad Pankoff <deoxxa@fknsrs.biz>
Date: Sun, 18 Aug 2019 12:25:22 +1000
Subject: [PATCH] Kernel: Add framebuffer ioctls; wrap raw ioctls with a C API

---
 Kernel/FB.h                        | 33 ++++++++++++++++++++++++++++++
 Libraries/LibC/sys/ioctl_numbers.h | 11 ++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 Kernel/FB.h

diff --git a/Kernel/FB.h b/Kernel/FB.h
new file mode 100644
index 00000000000..66b234f8425
--- /dev/null
+++ b/Kernel/FB.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+
+__BEGIN_DECLS
+
+int fb_get_size_in_bytes(int fd, size_t* out)
+{
+    return ioctl(fd, FB_IOCTL_GET_SIZE_IN_BYTES, out);
+}
+
+int fb_get_resolution(int fd, FBResolution* info)
+{
+    return ioctl(fd, FB_IOCTL_GET_RESOLUTION, info);
+}
+
+int fb_set_resolution(int fd, FBResolution* info)
+{
+    return ioctl(fd, FB_IOCTL_SET_RESOLUTION, info);
+}
+
+int fb_get_buffer(int fd, int* index)
+{
+    return ioctl(fd, FB_IOCTL_GET_BUFFER, index);
+}
+
+int fb_set_buffer(int fd, int index)
+{
+    return ioctl(fd, FB_IOCTL_SET_BUFFER, index);
+}
+
+__END_DECLS
diff --git a/Libraries/LibC/sys/ioctl_numbers.h b/Libraries/LibC/sys/ioctl_numbers.h
index 26ec4548d5f..3156b950fa5 100644
--- a/Libraries/LibC/sys/ioctl_numbers.h
+++ b/Libraries/LibC/sys/ioctl_numbers.h
@@ -9,6 +9,12 @@ struct winsize {
     unsigned short ws_col;
 };
 
+struct FBResolution {
+    int pitch;
+    int width;
+    int height;
+};
+
 __END_DECLS
 
 enum IOCtlNumber {
@@ -22,4 +28,9 @@ enum IOCtlNumber {
     TIOCSCTTY,
     TIOCNOTTY,
     TIOCSWINSZ,
+    FB_IOCTL_GET_SIZE_IN_BYTES,
+    FB_IOCTL_GET_RESOLUTION,
+    FB_IOCTL_SET_RESOLUTION,
+    FB_IOCTL_GET_BUFFER,
+    FB_IOCTL_SET_BUFFER,
 };