feat: finish ghostty pane backend integration

1 files changed, 27 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/os/kernel_info.zig b/vendor/libghostty-vt/src/os/kernel_info.zig
new file mode 100644
index 00000000..e57cc304
--- /dev/null
+++ b/vendor/libghostty-vt/src/os/kernel_info.zig
@@ -0,0 +1,27 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+pub fn getKernelInfo(alloc: std.mem.Allocator) ?[]const u8 {
+    if (comptime builtin.os.tag != .linux) return null;
+    const path = "/proc/sys/kernel/osrelease";
+    var file = std.fs.openFileAbsolute(path, .{}) catch return null;
+    defer file.close();
+
+    // 128 bytes should be enough to hold the kernel information
+    const kernel_info = file.readToEndAlloc(alloc, 128) catch return null;
+    defer alloc.free(kernel_info);
+    return alloc.dupe(u8, std.mem.trim(u8, kernel_info, &std.ascii.whitespace)) catch return null;
+}
+
+test "read /proc/sys/kernel/osrelease" {
+    if (comptime builtin.os.tag != .linux) return null;
+    const allocator = std.testing.allocator;
+
+    const kernel_info = getKernelInfo(allocator).?;
+    defer allocator.free(kernel_info);
+
+    // Since we can't hardcode the info in tests, just check
+    // if something was read from the file
+    try std.testing.expect(kernel_info.len > 0);
+    try std.testing.expect(!std.mem.eql(u8, kernel_info, ""));
+}