mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 19:10:26 +00:00
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. :^)
120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Time.h>
|
|
#include <Kernel/Process.h>
|
|
#include <Kernel/Time/TimeManagement.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$map_time_page()
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
REQUIRE_PROMISE(stdio);
|
|
|
|
auto& vmobject = TimeManagement::the().time_page_vmobject();
|
|
|
|
auto range = TRY(address_space().page_directory().range_allocator().try_allocate_randomized(PAGE_SIZE, PAGE_SIZE));
|
|
auto* region = TRY(address_space().allocate_region_with_vmobject(range, vmobject, 0, "Kernel time page"sv, PROT_READ, true));
|
|
return region->vaddr().get();
|
|
}
|
|
|
|
ErrorOr<FlatPtr> Process::sys$clock_gettime(clockid_t clock_id, Userspace<timespec*> user_ts)
|
|
{
|
|
VERIFY_NO_PROCESS_BIG_LOCK(this);
|
|
REQUIRE_PROMISE(stdio);
|
|
|
|
if (!TimeManagement::is_valid_clock_id(clock_id))
|
|
return EINVAL;
|
|
|
|
auto ts = TimeManagement::the().current_time(clock_id).to_timespec();
|
|
TRY(copy_to_user(user_ts, &ts));
|
|
return 0;
|
|
}
|
|
|
|
ErrorOr<FlatPtr> Process::sys$clock_settime(clockid_t clock_id, Userspace<const timespec*> user_ts)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
REQUIRE_PROMISE(settime);
|
|
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
|
|
auto time = TRY(copy_time_from_user(user_ts));
|
|
|
|
switch (clock_id) {
|
|
case CLOCK_REALTIME:
|
|
TimeManagement::the().set_epoch_time(time);
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ErrorOr<FlatPtr> Process::sys$clock_nanosleep(Userspace<const Syscall::SC_clock_nanosleep_params*> user_params)
|
|
{
|
|
VERIFY_NO_PROCESS_BIG_LOCK(this);
|
|
REQUIRE_PROMISE(stdio);
|
|
auto params = TRY(copy_typed_from_user(user_params));
|
|
|
|
auto requested_sleep = TRY(copy_time_from_user(params.requested_sleep));
|
|
|
|
bool is_absolute;
|
|
switch (params.flags) {
|
|
case 0:
|
|
is_absolute = false;
|
|
break;
|
|
case TIMER_ABSTIME:
|
|
is_absolute = true;
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
if (!TimeManagement::is_valid_clock_id(params.clock_id))
|
|
return EINVAL;
|
|
|
|
bool was_interrupted;
|
|
if (is_absolute) {
|
|
was_interrupted = Thread::current()->sleep_until(params.clock_id, requested_sleep).was_interrupted();
|
|
} else {
|
|
Time remaining_sleep;
|
|
was_interrupted = Thread::current()->sleep(params.clock_id, requested_sleep, &remaining_sleep).was_interrupted();
|
|
timespec remaining_sleep_ts = remaining_sleep.to_timespec();
|
|
if (was_interrupted && params.remaining_sleep) {
|
|
TRY(copy_to_user(params.remaining_sleep, &remaining_sleep_ts));
|
|
}
|
|
}
|
|
if (was_interrupted)
|
|
return EINTR;
|
|
return 0;
|
|
}
|
|
|
|
ErrorOr<FlatPtr> Process::sys$adjtime(Userspace<const timeval*> user_delta, Userspace<timeval*> user_old_delta)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
if (user_old_delta) {
|
|
timespec old_delta_ts = TimeManagement::the().remaining_epoch_time_adjustment();
|
|
timeval old_delta;
|
|
timespec_to_timeval(old_delta_ts, old_delta);
|
|
TRY(copy_to_user(user_old_delta, &old_delta));
|
|
}
|
|
|
|
if (user_delta) {
|
|
REQUIRE_PROMISE(settime);
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
auto delta = TRY(copy_time_from_user(user_delta));
|
|
|
|
// FIXME: Should use AK::Time internally
|
|
TimeManagement::the().set_remaining_epoch_time_adjustment(delta.to_timespec());
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
}
|