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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringView.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Process.h>
namespace Kernel {
ErrorOr<FlatPtr> Process::sys$unlink(int dirfd, Userspace<char const*> user_path, size_t path_length, int flags)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::cpath));
auto path = TRY(get_syscall_path_argument(user_path, path_length));
if (flags & ~AT_REMOVEDIR)
return Error::from_errno(EINVAL);
RefPtr<Custody> base;
if (dirfd == AT_FDCWD) {
base = current_directory();
} else {
auto base_description = TRY(open_file_description(dirfd));
if (!base_description->custody())
return Error::from_errno(EINVAL);
base = base_description->custody();
}
if (flags & AT_REMOVEDIR)
TRY(VirtualFileSystem::the().rmdir(credentials(), path->view(), *base));
else
TRY(VirtualFileSystem::the().unlink(credentials(), path->view(), *base));
return 0;
}
}
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