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chmod.cpp
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chmod.cpp
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/*
* Copyright (c) 2018-2020, Andreas Kling <[email protected]>
* Copyright (c) 2022, Daniel Bertalan <[email protected]>
*
* 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$chmod(Userspace<Syscall::SC_chmod_params const*> user_params)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::fattr));
auto params = TRY(copy_typed_from_user(user_params));
auto path = TRY(get_syscall_path_argument(params.path));
RefPtr<Custody> base;
if (params.dirfd == AT_FDCWD) {
base = current_directory();
} else {
auto base_description = TRY(open_file_description(params.dirfd));
if (!base_description->custody())
return EINVAL;
base = base_description->custody();
}
TRY(VirtualFileSystem::the().chmod(credentials(), path->view(), params.mode, *base, params.follow_symlinks ? 0 : O__NOERROR));
return 0;
}
ErrorOr<FlatPtr> Process::sys$fchmod(int fd, mode_t mode)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::fattr));
auto description = TRY(open_file_description(fd));
TRY(description->chmod(credentials(), mode));
return 0;
}
}