From a8bd597ed30f4d57bb8ec348b66f13a90c197b69 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 24 Aug 2026 10:50:05 +0200
Subject: kernel/fs: devfs: fix directory listing sentinel

The previous sentinel value would have prevent a device with major:minor
255:255 from showing up, if the read buffer was small enough to just
barely not read that device in one go. The new value is an actually
invalid device number, so it does not preclude any devices from showing
up in directory listings.
---
 kernel/kernel/filesystem/devfs/inode.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/kernel/filesystem/devfs/inode.cpp b/kernel/kernel/filesystem/devfs/inode.cpp
index 67f03768..8813eb2a 100644
--- a/kernel/kernel/filesystem/devfs/inode.cpp
+++ b/kernel/kernel/filesystem/devfs/inode.cpp
@@ -16,6 +16,7 @@
 #include <cstdint>
 #include <functional>
 #include <iterator>
+#include <limits>
 #include <ranges>
 #include <span>
 #include <utility>
@@ -26,7 +27,7 @@ namespace kernel::filesystem::devfs
 {
   namespace
   {
-    constexpr auto static sentinel = directory_listing_cursor{0xffff};
+    constexpr auto static sentinel = directory_listing_cursor{std::numeric_limits<std::uint64_t>::max()};
   }
 
   auto inode::read(std::span<std::byte>, kstd::bytes) const -> kstd::result<kstd::bytes>
-- 
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