35 lines
1.0 KiB
C++
35 lines
1.0 KiB
C++
#include "arch/Timer.h"
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#include "memory/MemoryManager.h"
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#include "sys/Syscall.h"
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#include <bits/clockid.h>
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#include <bits/timespec.h>
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Result<u64> sys_clock_gettime(Registers*, SyscallArgs args)
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{
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clockid_t id = (clockid_t)args[0];
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struct timespec* ts = (struct timespec*)args[1];
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switch (id)
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{
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case CLOCK_MONOTONIC: {
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usize ticks = Timer::ticks_ns();
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struct timespec kernel_ts;
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kernel_ts.tv_sec = (time_t)(ticks / NS_PER_SECOND);
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kernel_ts.tv_nsec = (long)(ticks % NS_PER_SECOND);
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if (!MemoryManager::copy_to_user_typed(ts, &kernel_ts)) return err(EFAULT);
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break;
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}
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case CLOCK_REALTIME: {
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usize clock = Timer::clock_ns();
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struct timespec kernel_ts;
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kernel_ts.tv_sec = (time_t)(clock / NS_PER_SECOND);
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kernel_ts.tv_nsec = (long)(clock % NS_PER_SECOND);
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if (!MemoryManager::copy_to_user_typed(ts, &kernel_ts)) return err(EFAULT);
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break;
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}
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default: return err(EINVAL);
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}
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return 0;
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}
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