Merge branch 'develop-BA-FS26' into 'develop'HEADdevelop

Merge of BA-FS26 branch into develop

See merge request teachos/kernel!49

1 files changed, 76 insertions, 0 deletions

diff --git a/kernel/kapi/filesystem.cpp b/kernel/kapi/filesystem.cpp
new file mode 100644
index 0000000..68b51c9
--- /dev/null
+++ b/kernel/kapi/filesystem.cpp
@@ -0,0 +1,76 @@
+#include <kapi/filesystem.hpp>
+
+#include <kernel/filesystem/open_file_descriptor.hpp>
+#include <kernel/filesystem/open_file_table.hpp>
+#include <kernel/filesystem/vfs.hpp>
+
+#include <kstd/memory>
+#include <kstd/unikstd.h>
+
+#include <cstddef>
+#include <string_view>
+
+namespace kapi::filesystem
+{
+  auto mount(std::string_view source, std::string_view target) -> kstd::ssize_t
+  {
+    if (kernel::filesystem::vfs::get().do_mount(source, target) == kernel::filesystem::vfs::operation_result::success)
+    {
+      return 0;
+    }
+    return -1;
+  }
+
+  auto umount(std::string_view target) -> kstd::ssize_t
+  {
+    if (kernel::filesystem::vfs::get().unmount(target) == kernel::filesystem::vfs::operation_result::success)
+    {
+      return 0;
+    }
+    return -1;
+  }
+
+  auto open(std::string_view path) -> kstd::ssize_t
+  {
+    if (auto dentry = kernel::filesystem::vfs::get().open(path))
+    {
+      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
+  {
+    if (auto open_file_descriptor = kernel::filesystem::open_file_table::get().file(file_descriptor))
+    {
+      if (kernel::filesystem::vfs::get().close(open_file_descriptor->get_dentry()->absolute_path()) ==
+          kernel::filesystem::vfs::operation_result::success)
+      {
+        return kernel::filesystem::open_file_table::get().remove_file(file_descriptor);
+      }
+    }
+    return -1;
+  }
+
+  auto read(size_t file_descriptor, void * buffer, size_t size) -> kstd::ssize_t
+  {
+    if (auto open_file_descriptor = kernel::filesystem::open_file_table::get().file(file_descriptor))
+    {
+      return open_file_descriptor->read(buffer, size);
+    }
+
+    return -1;
+  }
+
+  auto write(size_t file_descriptor, void const * buffer, size_t size) -> kstd::ssize_t
+  {
+    if (auto open_file_descriptor = kernel::filesystem::open_file_table::get().file(file_descriptor))
+    {
+      return open_file_descriptor->write(buffer, size);
+    }
+
+    return -1;
+  }
+}  // namespace kapi::filesystem
\ No newline at end of file