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https://github.com/RGBCube/serenity
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c3351d4b9f
Instead of getting credentials from Process::current(), we now require that they be provided as input to the various VFS functions. This ensures that an atomic set of credentials is used throughout an entire VFS operation.
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringView.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$link(Userspace<Syscall::SC_link_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::cpath));
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auto params = TRY(copy_typed_from_user(user_params));
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auto old_path = TRY(try_copy_kstring_from_user(params.old_path));
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auto new_path = TRY(try_copy_kstring_from_user(params.new_path));
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TRY(VirtualFileSystem::the().link(credentials(), old_path->view(), new_path->view(), current_directory()));
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$symlink(Userspace<Syscall::SC_symlink_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::cpath));
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auto params = TRY(copy_typed_from_user(user_params));
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auto target = TRY(get_syscall_path_argument(params.target));
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auto linkpath = TRY(get_syscall_path_argument(params.linkpath));
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TRY(VirtualFileSystem::the().symlink(credentials(), target->view(), linkpath->view(), current_directory()));
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return 0;
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}
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}
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