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#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.hpp>
#include <kstd/system_error.hpp>
#include <cstddef>
#include <expected>
#include <string_view>
namespace kapi::filesystem
{
auto mount(std::string_view source, std::string_view target) -> std::expected<void, kstd::error_code>
{
return kernel::filesystem::vfs::get().mount(source, target);
}
auto umount(std::string_view target) -> std::expected<void, kstd::error_code>
{
return kernel::filesystem::vfs::get().unmount(target);
}
auto open(std::string_view path) -> std::expected<std::size_t, kstd::error_code>
{
return kernel::filesystem::vfs::get().open(path).and_then([](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);
});
}
auto close(size_t file_descriptor) -> std::expected<void, kstd::error_code>
{
return kernel::filesystem::open_file_table::get()
.file(file_descriptor)
.transform([](auto file) { return file->get_dentry()->absolute_path(); })
.and_then([](auto path) { return kernel::filesystem::vfs::get().close(path); })
.and_then([=]() { return kernel::filesystem::open_file_table::get().remove_file(file_descriptor); })
.transform([](auto) { return; });
}
auto read(size_t file_descriptor, void * buffer, size_t size) -> std::expected<std::size_t, kstd::error_code>
{
return kernel::filesystem::open_file_table::get().file(file_descriptor).transform([=](auto descriptor) {
return descriptor->read(buffer, size);
});
}
auto write(size_t file_descriptor, void const * buffer, size_t size) -> std::expected<std::size_t, kstd::error_code>
{
return kernel::filesystem::open_file_table::get().file(file_descriptor).transform([=](auto descriptor) {
return descriptor->write(buffer, size);
});
}
} // namespace kapi::filesystem
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