forked from Bananymous/banan-os
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#include <fcntl.h>
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#include <sys/syscall.h>
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#include <sys/time.h>
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#include <time.h>
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#include <unistd.h>
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int gettimeofday(struct timeval* __restrict tp, void* __restrict tzp)
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{
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// If tzp is not a null pointer, the behavior is unspecified.
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if (tzp != nullptr)
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*static_cast<struct timezone*>(tzp) = {};
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timespec ts;
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clock_gettime(CLOCK_REALTIME, &ts);
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tp->tv_sec = ts.tv_sec;
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tp->tv_usec = ts.tv_nsec / 1000;
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return 0;
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}
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int getitimer(int which, struct itimerval* value)
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{
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return setitimer(which, nullptr, value);
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}
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int setitimer(int which, const struct itimerval* __restrict value, struct itimerval* __restrict ovalue)
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{
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return syscall(SYS_SETITIMER, which, value, ovalue);
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}
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int utimes(const char* path, const struct timeval times[2])
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{
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if (times == nullptr)
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return utimensat(AT_FDCWD, path, nullptr, 0);
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const timespec times_ts[2] {
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timespec {
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.tv_sec = times[0].tv_sec,
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.tv_nsec = times[0].tv_usec * 1000,
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},
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timespec {
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.tv_sec = times[1].tv_sec,
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.tv_nsec = times[1].tv_usec * 1000,
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},
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};
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return utimensat(AT_FDCWD, path, times_ts, 0);
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}
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