#include "fs/VFS.h"
#include "fs/tmpfs/FileSystem.h"
#include "memory/MemoryManager.h"
#include "sys/Syscall.h"
#include "thread/Scheduler.h"

Result<u64> sys_mount(Registers*, SyscallArgs args)
{
    auto target = TRY(MemoryManager::strdup_from_user(args[0]));
    auto fstype = TRY(MemoryManager::strdup_from_user(args[1]));

    auto* current = Scheduler::current();
    if (current->auth.euid != 0) return err(EPERM);

    SharedPtr<VFS::FileSystem> fs;

    if (fstype.view() == "tmpfs") fs = TRY(TmpFS::FileSystem::create());
    else if (fstype.view() == "devfs")
        fs = TRY(DeviceRegistry::create_devfs_instance());
    else
        return err(ENODEV);

    TRY(VFS::mount(target.chars(), fs, current->auth, current->current_directory));

    return 0;
}

Result<u64> sys_umount(Registers*, SyscallArgs args)
{
    auto target = TRY(MemoryManager::strdup_from_user(args[0]));

    auto* current = Scheduler::current();
    if (current->auth.euid != 0) return err(EPERM);

    TRY(VFS::umount(target.chars(), current->auth, current->current_directory));

    return 0;
}