ladybird/Kernel/Syscalls/process.cpp
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00

72 lines
2.0 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Types.h>
#include <Kernel/Process.h>
namespace Kernel {
KResultOr<pid_t> Process::sys$getpid()
{
REQUIRE_PROMISE(stdio);
return pid().value();
}
KResultOr<pid_t> Process::sys$getppid()
{
REQUIRE_PROMISE(stdio);
return m_ppid.value();
}
KResultOr<int> Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)
{
REQUIRE_PROMISE(stdio);
if (m_name.length() + 1 > buffer_size)
return ENAMETOOLONG;
if (!copy_to_user(buffer, m_name.characters(), m_name.length() + 1))
return EFAULT;
return 0;
}
KResultOr<int> Process::sys$set_process_name(Userspace<const char*> user_name, size_t user_name_length)
{
REQUIRE_PROMISE(proc);
if (user_name_length > 256)
return ENAMETOOLONG;
auto name = copy_string_from_user(user_name, user_name_length);
if (name.is_null())
return EFAULT;
// Empty and whitespace-only names only exist to confuse users.
if (name.is_whitespace())
return EINVAL;
m_name = move(name);
return 0;
}
KResultOr<int> Process::sys$set_coredump_metadata(Userspace<const Syscall::SC_set_coredump_metadata_params*> user_params)
{
Syscall::SC_set_coredump_metadata_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;
if (params.key.length == 0 || params.key.length > 16 * KiB)
return EINVAL;
if (params.value.length > 16 * KiB)
return EINVAL;
auto copied_key = copy_string_from_user(params.key.characters, params.key.length);
if (copied_key.is_null())
return EFAULT;
auto copied_value = copy_string_from_user(params.value.characters, params.value.length);
if (copied_value.is_null())
return EFAULT;
if (!m_coredump_metadata.contains(copied_key) && m_coredump_metadata.size() >= 16)
return EFAULT;
m_coredump_metadata.set(move(copied_key), move(copied_value));
return 0;
}
}