mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 11:12:45 +00:00
2a78bf8596
The Process::Handler type has KResultOr<FlatPtr> as its return type. Using a different return type with an equally-sized template parameter sort of works but breaks once that condition is no longer true, e.g. for KResultOr<int> on x86_64. Ideally the syscall handlers would also take FlatPtrs as their args so we can get rid of the reinterpret_cast for the function pointer but I didn't quite feel like cleaning that up as well.
124 lines
3.3 KiB
C++
124 lines
3.3 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 {
|
|
|
|
KResultOr<FlatPtr> Process::sys$clock_gettime(clockid_t clock_id, Userspace<timespec*> user_ts)
|
|
{
|
|
REQUIRE_PROMISE(stdio);
|
|
|
|
if (!TimeManagement::is_valid_clock_id(clock_id))
|
|
return EINVAL;
|
|
|
|
auto ts = TimeManagement::the().current_time(clock_id).to_timespec();
|
|
if (!copy_to_user(user_ts, &ts))
|
|
return EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$clock_settime(clockid_t clock_id, Userspace<const timespec*> user_ts)
|
|
{
|
|
REQUIRE_PROMISE(settime);
|
|
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
|
|
auto ts = copy_time_from_user(user_ts);
|
|
if (!ts.has_value())
|
|
return EFAULT;
|
|
|
|
switch (clock_id) {
|
|
case CLOCK_REALTIME:
|
|
TimeManagement::the().set_epoch_time(ts.value());
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$clock_nanosleep(Userspace<const Syscall::SC_clock_nanosleep_params*> user_params)
|
|
{
|
|
REQUIRE_PROMISE(stdio);
|
|
|
|
Syscall::SC_clock_nanosleep_params params;
|
|
if (!copy_from_user(¶ms, user_params))
|
|
return EFAULT;
|
|
|
|
Optional<Time> requested_sleep = copy_time_from_user(params.requested_sleep);
|
|
if (!requested_sleep.has_value())
|
|
return EFAULT;
|
|
|
|
bool is_absolute;
|
|
switch (params.flags) {
|
|
case 0:
|
|
is_absolute = false;
|
|
break;
|
|
case TIMER_ABSTIME:
|
|
is_absolute = true;
|
|
break;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
if (!TimeManagement::is_valid_clock_id(params.clock_id))
|
|
return EINVAL;
|
|
|
|
bool was_interrupted;
|
|
if (is_absolute) {
|
|
was_interrupted = Thread::current()->sleep_until(params.clock_id, requested_sleep.value()).was_interrupted();
|
|
} else {
|
|
Time remaining_sleep;
|
|
was_interrupted = Thread::current()->sleep(params.clock_id, requested_sleep.value(), &remaining_sleep).was_interrupted();
|
|
timespec remaining_sleep_ts = remaining_sleep.to_timespec();
|
|
if (was_interrupted && params.remaining_sleep && !copy_to_user(params.remaining_sleep, &remaining_sleep_ts))
|
|
return EFAULT;
|
|
}
|
|
if (was_interrupted)
|
|
return EINTR;
|
|
return 0;
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$adjtime(Userspace<const timeval*> user_delta, Userspace<timeval*> user_old_delta)
|
|
{
|
|
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);
|
|
if (!copy_to_user(user_old_delta, &old_delta))
|
|
return EFAULT;
|
|
}
|
|
|
|
if (user_delta) {
|
|
REQUIRE_PROMISE(settime);
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
auto delta = copy_time_from_user(user_delta);
|
|
if (!delta.has_value())
|
|
return EFAULT;
|
|
|
|
// FIXME: Should use AK::Time internally
|
|
TimeManagement::the().set_remaining_epoch_time_adjustment(delta->to_timespec());
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$gettimeofday(Userspace<timeval*> user_tv)
|
|
{
|
|
REQUIRE_PROMISE(stdio);
|
|
auto tv = kgettimeofday().to_timeval();
|
|
if (!copy_to_user(user_tv, &tv))
|
|
return EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
}
|