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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/RefPtr.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Tasks/Process.h>
namespace Kernel {
ErrorOr<FlatPtr> Process::sys$fstat(int fd, Userspace<stat*> user_statbuf)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::stdio));
auto description = TRY(open_file_description(fd));
auto buffer = TRY(description->stat());
TRY(copy_to_user(user_statbuf, &buffer));
return 0;
}
ErrorOr<FlatPtr> Process::sys$stat(Userspace<Syscall::SC_stat_params const*> user_params)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::rpath));
auto params = TRY(copy_typed_from_user(user_params));
auto path = TRY(get_syscall_path_argument(params.path));
auto base = TRY(custody_for_dirfd(params.dirfd));
auto metadata = TRY(VirtualFileSystem::the().lookup_metadata(credentials(), path->view(), *base, params.follow_symlinks ? 0 : O_NOFOLLOW_NOERROR));
auto statbuf = TRY(metadata.stat());
TRY(copy_to_user(params.statbuf, &statbuf));
return 0;
}
}
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