mirror of
https://github.com/SerenityOS/serenity
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45 lines
1.3 KiB
C++
45 lines
1.3 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/NonnullRefPtrVector.h>
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#include <Kernel/FileSystem/Custody.h>
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#include <Kernel/FileSystem/OpenFileDescription.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$fchown(int fd, UserID uid, GroupID gid)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::chown));
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auto description = TRY(open_file_description(fd));
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TRY(description->chown(uid, gid));
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$chown(Userspace<Syscall::SC_chown_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::chown));
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auto params = TRY(copy_typed_from_user(user_params));
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auto path = TRY(get_syscall_path_argument(params.path));
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RefPtr<Custody> base;
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if (params.dirfd == AT_FDCWD) {
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base = current_directory();
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} else {
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auto base_description = TRY(open_file_description(params.dirfd));
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if (!base_description->custody())
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return EINVAL;
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base = base_description->custody();
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}
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TRY(VirtualFileSystem::the().chown(path->view(), params.uid, params.gid, *base, params.follow_symlinks ? 0 : O_NOFOLLOW_NOERROR));
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return 0;
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}
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}
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