mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
c3351d4b9f
Instead of getting credentials from Process::current(), we now require that they be provided as input to the various VFS functions. This ensures that an atomic set of credentials is used throughout an entire VFS operation.
31 lines
1 KiB
C++
31 lines
1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/StringView.h>
|
|
#include <Kernel/FileSystem/Custody.h>
|
|
#include <Kernel/FileSystem/VirtualFileSystem.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$realpath(Userspace<Syscall::SC_realpath_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 custody = TRY(VirtualFileSystem::the().resolve_path(credentials(), path->view(), current_directory()));
|
|
auto absolute_path = TRY(custody->try_serialize_absolute_path());
|
|
|
|
size_t ideal_size = absolute_path->length() + 1;
|
|
auto size_to_copy = min(ideal_size, params.buffer.size);
|
|
TRY(copy_to_user(params.buffer.data, absolute_path->characters(), size_to_copy));
|
|
// Note: we return the whole size here, not the copied size.
|
|
return ideal_size;
|
|
};
|
|
|
|
}
|