Luna/kernel/src/fs/VFS.cpp

#include "fs/VFS.h"
#include "Log.h"
#include <luna/PathParser.h>

namespace VFS
{
    SharedPtr<FileSystem> root_fs;

    Inode& root_inode()
    {
        return *root_fs->root_inode();
    }

    Result<SharedPtr<Inode>> resolve_path(const char* path)
    {
        auto parser = TRY(PathParser::create(path));

        SharedPtr<Inode> current_inode = root_fs->root_inode();

        // FIXME: Properly handle relative paths.

        const char* section;
        while (parser.next().try_set_value(section)) { current_inode = TRY(current_inode->find(section)); }

        return current_inode;
    }

    Result<SharedPtr<Inode>> create_directory(const char* path)
    {
        auto parser = TRY(PathParser::create(path));
        auto parent_path = TRY(parser.dirname());

        auto parent_inode = TRY(resolve_path(parent_path.chars()));

        auto child_name = TRY(parser.basename());

        // kdbgln("vfs: creating directory '%s' in parent '%s'", child_name.chars(), parent_path.chars());

        return parent_inode->create_subdirectory(child_name.chars());
    }

    Result<SharedPtr<Inode>> create_file(const char* path)
    {
        auto parser = TRY(PathParser::create(path));
        auto parent_path = TRY(parser.dirname());

        auto parent_inode = TRY(resolve_path(parent_path.chars()));

        auto child_name = TRY(parser.basename());

        // kdbgln("vfs: creating file '%s' in parent '%s'", child_name.chars(), parent_path.chars());

        return parent_inode->create_file(child_name.chars());
    }
}