From f54e09351a967da21f863fd2d3b17ffd24d3ee87 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Sun, 12 Jul 2026 15:24:40 +0200
Subject: kernel: integrate kstd system_error facility

---
 kernel/kapi/filesystem.cpp | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

(limited to 'kernel/kapi/filesystem.cpp')

diff --git a/kernel/kapi/filesystem.cpp b/kernel/kapi/filesystem.cpp
index 4880ae38..24a3adf3 100644
--- a/kernel/kapi/filesystem.cpp
+++ b/kernel/kapi/filesystem.cpp
@@ -5,9 +5,11 @@
 #include <kernel/filesystem/vfs.hpp>
 
 #include <kstd/memory.hpp>
+#include <kstd/system_error.hpp>
 #include <kstd/unikstd.h>
 
 #include <cstddef>
+#include <expected>
 #include <string_view>
 
 namespace kapi::filesystem
@@ -30,15 +32,12 @@ namespace kapi::filesystem
     return -1;
   }
 
-  auto open(std::string_view path) -> kstd::ssize_t
+  auto open(std::string_view path) -> std::expected<std::size_t, kstd::error_code>
   {
-    if (auto dentry = kernel::filesystem::vfs::get().open(path))
-    {
+    return kernel::filesystem::vfs::get().open(path).transform([](auto dentry) {
       auto open_file_descriptor = kstd::make_shared<kernel::filesystem::open_file_descriptor>(dentry);
       return kernel::filesystem::open_file_table::get().add_file(open_file_descriptor);
-    }
-
-    return -1;
+    });
   }
 
   auto close(size_t file_descriptor) -> kstd::ssize_t
-- 
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