From 3ace886a9e9f044cd48de51f0a15aceb02bfa9b2 Mon Sep 17 00:00:00 2001
From: "marcel.braun" <marcel.braun@ost.ch>
Date: Tue, 17 Mar 2026 19:36:20 +0100
Subject: Clean up project folder structure

---
 kernel/src/filesystem/filesystem.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 kernel/src/filesystem/filesystem.cpp

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
new file mode 100644
index 0000000..86b7940
--- /dev/null
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -0,0 +1,11 @@
+#include "kernel/filesystem/filesystem.hpp"
+
+#include "kernel/filesystem/inode.hpp"
+
+namespace filesystem
+{
+  auto filesystem::root_inode() const -> inode const &
+  {
+    return m_root_inode;
+  }
+}  // namespace filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From 8d3471f1d160d301f9d990455bd8c63450df1cf3 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Thu, 19 Mar 2026 21:59:31 +0100
Subject: remove inode metadata

---
 kernel/src/filesystem/filesystem.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 86b7940..50b5587 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -2,9 +2,11 @@
 
 #include "kernel/filesystem/inode.hpp"
 
+#include <kstd/memory>
+
 namespace filesystem
 {
-  auto filesystem::root_inode() const -> inode const &
+  auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
   {
     return m_root_inode;
   }
-- 
cgit v1.2.3


From bcb4f8a76dea2443c1597716e27b7c2d268bfc44 Mon Sep 17 00:00:00 2001
From: "marcel.braun" <marcel.braun@ost.ch>
Date: Mon, 23 Mar 2026 09:49:32 +0100
Subject: Refactor filesystem

---
 kernel/src/filesystem/filesystem.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 50b5587..0e33d95 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,11 +1,22 @@
 #include "kernel/filesystem/filesystem.hpp"
 
+#include "kernel/devices/device.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
 
 namespace filesystem
 {
+  auto filesystem::mount(kstd::shared_ptr<devices::device> const & device) -> int
+  {
+    if (!device)
+    {
+      return -1;  // TODO BA-FS26 panic or errorcode?
+    }
+    m_device = device;
+    return 0;
+  }
+
   auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
   {
     return m_root_inode;
-- 
cgit v1.2.3


From 70229b88ad195a6e945b4cc75e1248685cda0951 Mon Sep 17 00:00:00 2001
From: "marcel.braun" <marcel.braun@ost.ch>
Date: Tue, 24 Mar 2026 17:05:57 +0100
Subject: Add root_dentry to filesystem

---
 kernel/src/filesystem/filesystem.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 0e33d95..8ebe58f 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,6 +1,7 @@
 #include "kernel/filesystem/filesystem.hpp"
 
 #include "kernel/devices/device.hpp"
+#include "kernel/filesystem/dentry.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
@@ -21,4 +22,14 @@ namespace filesystem
   {
     return m_root_inode;
   }
+
+  auto filesystem::root_dentry() const -> kstd::shared_ptr<dentry> const &
+  {
+    return m_root_dentry;
+  }
+
+  auto filesystem::set_root_dentry(kstd::shared_ptr<dentry> dentry) -> void
+  {
+    m_root_dentry = dentry;
+  }
 }  // namespace filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From 84d4476650b31dbfc52becf2ff65ddce9d31c9ec Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Tue, 24 Mar 2026 23:54:28 +0100
Subject: implement a rootfs to handle / mounts correctly

---
 kernel/src/filesystem/filesystem.cpp | 11 -----------
 1 file changed, 11 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 8ebe58f..0e33d95 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,7 +1,6 @@
 #include "kernel/filesystem/filesystem.hpp"
 
 #include "kernel/devices/device.hpp"
-#include "kernel/filesystem/dentry.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
@@ -22,14 +21,4 @@ namespace filesystem
   {
     return m_root_inode;
   }
-
-  auto filesystem::root_dentry() const -> kstd::shared_ptr<dentry> const &
-  {
-    return m_root_dentry;
-  }
-
-  auto filesystem::set_root_dentry(kstd::shared_ptr<dentry> dentry) -> void
-  {
-    m_root_dentry = dentry;
-  }
 }  // namespace filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From 5603c7ec2b07dbc772fe2c20a9e9e176c5465c57 Mon Sep 17 00:00:00 2001
From: "marcel.braun" <marcel.braun@ost.ch>
Date: Mon, 30 Mar 2026 21:22:22 +0200
Subject: Move everything in kernel into kernel namespace

---
 kernel/src/filesystem/filesystem.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 0e33d95..c891d00 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -5,7 +5,7 @@
 
 #include <kstd/memory>
 
-namespace filesystem
+namespace kernel::filesystem
 {
   auto filesystem::mount(kstd::shared_ptr<devices::device> const & device) -> int
   {
@@ -21,4 +21,4 @@ namespace filesystem
   {
     return m_root_inode;
   }
-}  // namespace filesystem
\ No newline at end of file
+}  // namespace kernel::filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From 9e85f9d1f34d08213a918d9c1b0845c179e323af Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Tue, 31 Mar 2026 08:56:17 +0200
Subject: move device into kapi

---
 kernel/src/filesystem/filesystem.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index c891d00..0ac9cf8 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,13 +1,13 @@
 #include "kernel/filesystem/filesystem.hpp"
 
-#include "kernel/devices/device.hpp"
+#include "kapi/devices/device.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
 
 namespace kernel::filesystem
 {
-  auto filesystem::mount(kstd::shared_ptr<devices::device> const & device) -> int
+  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
   {
     if (!device)
     {
-- 
cgit v1.2.3


From 72b40ecf33fb0ef2d4232b80560642296c79399c Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Thu, 2 Apr 2026 09:49:17 +0200
Subject: automatically detect the mounted file system type by trial-and-error

---
 kernel/src/filesystem/filesystem.cpp | 29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 0ac9cf8..e0c760f 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,20 +1,41 @@
 #include "kernel/filesystem/filesystem.hpp"
 
 #include "kapi/devices/device.hpp"
+#include "kapi/system.hpp"
+
+#include "kernel/filesystem/ext2/filesystem.hpp"
 #include "kernel/filesystem/inode.hpp"
 
 #include <kstd/memory>
 
+#include <array>
+
 namespace kernel::filesystem
 {
-  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
+  namespace
+  {
+    constexpr auto static filesystem_factories = std::array{
+      []() { return kstd::make_shared<ext2::filesystem>(); },
+    };
+  }  // namespace
+
+  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> kstd::shared_ptr<filesystem>
   {
     if (!device)
     {
-      return -1;  // TODO BA-FS26 panic or errorcode?
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: device is null.");
     }
-    m_device = device;
-    return 0;
+
+    for (auto & factory : filesystem_factories)
+    {
+      auto fs = factory();
+      if (fs->mount(device) == 0)
+      {
+        return fs;
+      }
+    }
+
+    kapi::system::panic("[FILESYSTEM] cannot mount filesystem: no suitable filesystem found on device.");
   }
 
   auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
-- 
cgit v1.2.3


From 1dcf253fdf8169a3b2b71bfac68f2f25951af1a8 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Thu, 2 Apr 2026 10:04:04 +0200
Subject: fix build, refactoring

---
 kernel/src/filesystem/filesystem.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index e0c760f..a06eb80 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -19,7 +19,8 @@ namespace kernel::filesystem
     };
   }  // namespace
 
-  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> kstd::shared_ptr<filesystem>
+  auto filesystem::probe_and_mount(kstd::shared_ptr<kapi::devices::device> const & device)
+      -> kstd::shared_ptr<filesystem>
   {
     if (!device)
     {
@@ -38,6 +39,12 @@ namespace kernel::filesystem
     kapi::system::panic("[FILESYSTEM] cannot mount filesystem: no suitable filesystem found on device.");
   }
 
+  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
+  {
+    m_device = device;
+    return 0;
+  }
+
   auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
   {
     return m_root_inode;
-- 
cgit v1.2.3


From 4a2d4fb3ab38a64c4b10832f5a6318b7240829cc Mon Sep 17 00:00:00 2001
From: Marcel Braun <marcel.braun@ost.ch>
Date: Mon, 6 Apr 2026 11:40:12 +0200
Subject: Implement read data in ext2 inode

---
 kernel/src/filesystem/filesystem.cpp | 5 +++++
 1 file changed, 5 insertions(+)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index a06eb80..26c57b6 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -49,4 +49,9 @@ namespace kernel::filesystem
   {
     return m_root_inode;
   }
+
+  auto filesystem::device() const -> kstd::shared_ptr<kapi::devices::device> const &
+  {
+    return m_device;
+  }
 }  // namespace kernel::filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From dd330e7a05905713acfa87ec109956bfe78f78c4 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 09:31:32 +0200
Subject: add descriptions, some refactoring

---
 kernel/src/filesystem/filesystem.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 26c57b6..b08b520 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -36,11 +36,12 @@ namespace kernel::filesystem
       }
     }
 
-    kapi::system::panic("[FILESYSTEM] cannot mount filesystem: no suitable filesystem found on device.");
+    return nullptr;
   }
 
   auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
   {
+    // TODO BA-FS26 maybe check if device is null and panic here already?
     m_device = device;
     return 0;
   }
-- 
cgit v1.2.3


From 2793770dc6eba30b73b4a4993618d2cbe184790e Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 15:21:10 +0200
Subject: implement unmount, improve error codes

---
 kernel/src/filesystem/filesystem.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index b08b520..da2838d 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -30,7 +30,7 @@ namespace kernel::filesystem
     for (auto & factory : filesystem_factories)
     {
       auto fs = factory();
-      if (fs->mount(device) == 0)
+      if (fs->mount(device) == operation_result::success)
       {
         return fs;
       }
@@ -39,11 +39,11 @@ namespace kernel::filesystem
     return nullptr;
   }
 
-  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> int
+  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> operation_result
   {
     // TODO BA-FS26 maybe check if device is null and panic here already?
     m_device = device;
-    return 0;
+    return operation_result::success;
   }
 
   auto filesystem::root_inode() const -> kstd::shared_ptr<inode> const &
-- 
cgit v1.2.3


From 153d061ddfcc6cb9bff1f691a3fe5415f94a3615 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 20:41:49 +0200
Subject: remove todos

---
 kernel/src/filesystem/filesystem.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index da2838d..d8b04eb 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -41,7 +41,11 @@ namespace kernel::filesystem
 
   auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> operation_result
   {
-    // TODO BA-FS26 maybe check if device is null and panic here already?
+    if (!device)
+    {
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: device is null.");
+    }
+
     m_device = device;
     return operation_result::success;
   }
-- 
cgit v1.2.3


From 5e183b418b0e65dcdffa02a43702a0d6deb43b04 Mon Sep 17 00:00:00 2001
From: Marcel Braun <marcel.braun@ost.ch>
Date: Mon, 13 Apr 2026 21:17:50 +0200
Subject: Back filesystem by inode and not device

---
 kernel/src/filesystem/filesystem.cpp | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index d8b04eb..99e7456 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,6 +1,5 @@
 #include "kernel/filesystem/filesystem.hpp"
 
-#include "kapi/devices/device.hpp"
 #include "kapi/system.hpp"
 
 #include "kernel/filesystem/ext2/filesystem.hpp"
@@ -19,18 +18,17 @@ namespace kernel::filesystem
     };
   }  // namespace
 
-  auto filesystem::probe_and_mount(kstd::shared_ptr<kapi::devices::device> const & device)
-      -> kstd::shared_ptr<filesystem>
+  auto filesystem::probe_and_mount(kstd::shared_ptr<inode> const & backing_inode) -> kstd::shared_ptr<filesystem>
   {
-    if (!device)
+    if (!backing_inode)
     {
-      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: device is null.");
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: backing inode is null.");
     }
 
     for (auto & factory : filesystem_factories)
     {
       auto fs = factory();
-      if (fs->mount(device) == operation_result::success)
+      if (fs->mount(backing_inode) == operation_result::success)
       {
         return fs;
       }
@@ -39,14 +37,14 @@ namespace kernel::filesystem
     return nullptr;
   }
 
-  auto filesystem::mount(kstd::shared_ptr<kapi::devices::device> const & device) -> operation_result
+  auto filesystem::mount(kstd::shared_ptr<inode> const & backing_inode) -> operation_result
   {
-    if (!device)
+    if (!backing_inode)
     {
-      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: device is null.");
+      kapi::system::panic("[FILESYSTEM] cannot mount filesystem: backing inode is null.");
     }
 
-    m_device = device;
+    m_backing_inode = backing_inode;
     return operation_result::success;
   }
 
@@ -55,8 +53,8 @@ namespace kernel::filesystem
     return m_root_inode;
   }
 
-  auto filesystem::device() const -> kstd::shared_ptr<kapi::devices::device> const &
+  auto filesystem::backing_inode() const -> kstd::shared_ptr<inode> const &
   {
-    return m_device;
+    return m_backing_inode;
   }
 }  // namespace kernel::filesystem
\ No newline at end of file
-- 
cgit v1.2.3


From 2d8fed40bd0d0f8144783b6b344dc79944291b72 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 23 Apr 2026 13:31:17 +0200
Subject: chore: organize includes

---
 kernel/src/filesystem/filesystem.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index 99e7456..f958660 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,10 +1,10 @@
 #include "kernel/filesystem/filesystem.hpp"
 
-#include "kapi/system.hpp"
-
 #include "kernel/filesystem/ext2/filesystem.hpp"
 #include "kernel/filesystem/inode.hpp"
 
+#include "kapi/system.hpp"
+
 #include <kstd/memory>
 
 #include <array>
-- 
cgit v1.2.3


From f6f10575f75ac23d06e1d94f7861611503daa7af Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 23 Apr 2026 14:03:28 +0200
Subject: chore: banish relative includes

---
 kernel/src/filesystem/filesystem.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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

diff --git a/kernel/src/filesystem/filesystem.cpp b/kernel/src/filesystem/filesystem.cpp
index f958660..24d0e22 100644
--- a/kernel/src/filesystem/filesystem.cpp
+++ b/kernel/src/filesystem/filesystem.cpp
@@ -1,9 +1,9 @@
-#include "kernel/filesystem/filesystem.hpp"
+#include <kernel/filesystem/filesystem.hpp>
 
-#include "kernel/filesystem/ext2/filesystem.hpp"
-#include "kernel/filesystem/inode.hpp"
+#include <kernel/filesystem/ext2/filesystem.hpp>
+#include <kernel/filesystem/inode.hpp>
 
-#include "kapi/system.hpp"
+#include <kapi/system.hpp>
 
 #include <kstd/memory>
 
-- 
cgit v1.2.3