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Kernel+Userland: Remove chroot functionality
We are not using this for anything and it's just been sitting there gathering dust for well over a year, so let's stop carrying all this complexity around for no good reason.
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96d5d017b7
commit
1b739a72c2
19 changed files with 3 additions and 289 deletions
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@ -1,38 +0,0 @@
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/*
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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/Custody.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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KResultOr<FlatPtr> Process::sys$chroot(Userspace<const char*> user_path, size_t path_length, int mount_flags)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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if (!is_superuser())
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return EPERM;
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REQUIRE_PROMISE(chroot);
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auto path = get_syscall_path_argument(user_path, path_length);
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if (path.is_error())
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return path.error();
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auto directory_or_error = VirtualFileSystem::the().open_directory(path.value()->view(), current_directory());
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if (directory_or_error.is_error())
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return directory_or_error.error();
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auto directory = directory_or_error.value();
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m_root_directory_relative_to_global_root = directory;
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int chroot_mount_flags = mount_flags == -1 ? directory->mount_flags() : mount_flags;
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auto custody_or_error = Custody::try_create(nullptr, "", directory->inode(), chroot_mount_flags);
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if (custody_or_error.is_error())
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return custody_or_error.error();
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set_root_directory(custody_or_error.release_value());
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return 0;
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}
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}
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@ -21,8 +21,6 @@ KResultOr<FlatPtr> Process::sys$fork(RegisterState& regs)
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auto child = Process::create(child_first_thread, m_name, uid(), gid(), pid(), m_is_kernel_process, m_cwd, m_executable, m_tty, this);
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if (!child || !child_first_thread)
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return ENOMEM;
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child->m_root_directory = m_root_directory;
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child->m_root_directory_relative_to_global_root = m_root_directory_relative_to_global_root;
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child->m_veil_state = m_veil_state;
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child->m_unveiled_paths = m_unveiled_paths.deep_copy();
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@ -92,7 +92,7 @@ KResultOr<FlatPtr> Process::sys$unveil(Userspace<const Syscall::SC_unveil_params
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// If this case is encountered, the parent node of the path is returned and the custody of that inode is used instead.
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RefPtr<Custody> parent_custody; // Parent inode in case of ENOENT
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OwnPtr<KString> new_unveiled_path;
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auto custody_or_error = VirtualFileSystem::the().resolve_path_without_veil(path.view(), root_directory(), &parent_custody);
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auto custody_or_error = VirtualFileSystem::the().resolve_path_without_veil(path.view(), VirtualFileSystem::the().root_custody(), &parent_custody);
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if (!custody_or_error.is_error()) {
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new_unveiled_path = custody_or_error.value()->try_create_absolute_path();
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if (!new_unveiled_path)
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