mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-22 10:59:51 +03:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/NonnullRefPtrVector.h>
|
|
#include <Kernel/FileSystem/Custody.h>
|
|
#include <Kernel/FileSystem/VirtualFileSystem.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$fstat(int fd, Userspace<stat*> user_statbuf)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
|
|
REQUIRE_PROMISE(stdio);
|
|
auto description = TRY(fds().open_file_description(fd));
|
|
stat buffer = {};
|
|
TRY(description->stat(buffer));
|
|
TRY(copy_to_user(user_statbuf, &buffer));
|
|
return 0;
|
|
}
|
|
|
|
ErrorOr<FlatPtr> Process::sys$stat(Userspace<const Syscall::SC_stat_params*> user_params)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
|
|
REQUIRE_PROMISE(rpath);
|
|
auto params = TRY(copy_typed_from_user(user_params));
|
|
|
|
auto path = TRY(get_syscall_path_argument(params.path));
|
|
|
|
RefPtr<Custody> base;
|
|
if (params.dirfd == AT_FDCWD) {
|
|
base = current_directory();
|
|
} else {
|
|
auto base_description = TRY(fds().open_file_description(params.dirfd));
|
|
if (!base_description->is_directory())
|
|
return ENOTDIR;
|
|
if (!base_description->custody())
|
|
return EINVAL;
|
|
base = base_description->custody();
|
|
}
|
|
auto metadata = TRY(VirtualFileSystem::the().lookup_metadata(path->view(), *base, params.follow_symlinks ? 0 : O_NOFOLLOW_NOERROR));
|
|
stat statbuf = {};
|
|
TRY(metadata.stat(statbuf));
|
|
TRY(copy_to_user(params.statbuf, &statbuf));
|
|
return 0;
|
|
}
|
|
|
|
}
|