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/*
* 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<FlatPtr> Process::sys$getpid()
{
VERIFY_NO_PROCESS_BIG_LOCK(this)
REQUIRE_PROMISE(stdio);
return pid().value();
}
KResultOr<FlatPtr> Process::sys$getppid()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(stdio);
return m_protected_values.ppid.value();
}
KResultOr<FlatPtr> Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(stdio);
if (m_name.length() + 1 > buffer_size)
return ENAMETOOLONG;
return copy_to_user(buffer, m_name.characters(), m_name.length() + 1);
}
KResultOr<FlatPtr> Process::sys$set_process_name(Userspace<const char*> user_name, size_t user_name_length)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(proc);
if (user_name_length > 256)
return ENAMETOOLONG;
auto name = TRY(try_copy_kstring_from_user(user_name, user_name_length));
// Empty and whitespace-only names only exist to confuse users.
if (name->view().is_whitespace())
return EINVAL;
// FIXME: There's a String copy here. Process::m_name should be a KString.
m_name = name->view();
return 0;
}
KResultOr<FlatPtr> Process::sys$set_coredump_metadata(Userspace<const Syscall::SC_set_coredump_metadata_params*> user_params)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
auto params = TRY(copy_typed_from_user(user_params));
if (params.key.length == 0 || params.key.length > 16 * KiB)
return EINVAL;
if (params.value.length > 16 * KiB)
return EINVAL;
auto key = TRY(try_copy_kstring_from_user(params.key));
auto value = TRY(try_copy_kstring_from_user(params.value));
return set_coredump_property(move(key), move(value));
}
}
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