time_syscall.c 文件参考

浏览源代码.

函数
int	SysUtime (const char *path, const struct utimbuf *ptimes)
time_t	SysTime (time_t *tloc)
int	SysSetiTimer (int which, const struct itimerval *value, struct itimerval *ovalue)
int	SysGetiTimer (int which, struct itimerval *value)
int	SysTimerCreate (clockid_t clockID, struct ksigevent *evp, timer_t *timerID)
int	SysTimerGettime (timer_t timerID, struct itimerspec *value)
int	SysTimerSettime (timer_t timerID, int flags, const struct itimerspec *value, struct itimerspec *oldValue)
int	SysTimerGetoverrun (timer_t timerID)
int	SysTimerDelete (timer_t timerID)
int	SysClockSettime (clockid_t clockID, const struct timespec *tp)
int	SysClockGettime (clockid_t clockID, struct timespec *tp)
	获取系统时间 更多...
int	SysClockGetres (clockid_t clockID, struct timespec *tp)
int	SysClockNanoSleep (clockid_t clk, int flags, const struct timespec *req, struct timespec *rem)
int	SysNanoSleep (const struct timespec *rqtp, struct timespec *rmtp)
clock_t	SysTimes (struct tms *buf)
int	SysClockSettime64 (clockid_t clockID, const struct timespec64 *tp)
int	SysClockGettime64 (clockid_t clockID, struct timespec64 *tp)
int	SysClockGetres64 (clockid_t clockID, struct timespec64 *tp)
int	SysClockNanoSleep64 (clockid_t clk, int flags, const struct timespec64 *req, struct timespec64 *rem)
int	SysTimerGettime64 (timer_t timerID, struct itimerspec64 *value)
int	SysTimerSettime64 (timer_t timerID, int flags, const struct itimerspec64 *value, struct itimerspec64 *oldValue)

函数说明

SysClockGetres()

int SysClockGetres	(	clockid_t	clockID,
		struct timespec *	tp
	)

在文件 time_syscall.c 第 308 行定义.

{
    int ret;
    struct timespec stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = clock_getres(clockID, &stp);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (LOS_ArchCopyToUser(tp, &stp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysClockGetres64()

int SysClockGetres64	(	clockid_t	clockID,
		struct timespec64 *	tp
	)

在文件 time_syscall.c 第 462 行定义.

{
    int ret;
    struct timespec t;
    struct timespec64 stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = clock_getres(clockID, &t);
    if (ret < 0) {
        return -get_errno();
    }
 
    stp.tv_sec = t.tv_sec;
    stp.tv_nsec = t.tv_nsec;
 
    if (LOS_ArchCopyToUser(tp, &stp, sizeof(struct timespec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysClockGettime()

int SysClockGettime	(	clockid_t	clockID,
		struct timespec *	tp
	)

获取系统时间

在文件 time_syscall.c 第 285 行定义.

{
    int ret;
    struct timespec stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = clock_gettime(clockID, &stp);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (LOS_ArchCopyToUser(tp, &stp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysClockGettime64()

int SysClockGettime64	(	clockid_t	clockID,
		struct timespec64 *	tp
	)

在文件 time_syscall.c 第 435 行定义.

{
    int ret;
    struct timespec t;
    struct timespec64 stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = clock_gettime(clockID, &t);
    if (ret < 0) {
        return -get_errno();
    }
 
    stp.tv_sec = t.tv_sec;
    stp.tv_nsec = t.tv_nsec;
 
    if (LOS_ArchCopyToUser(tp, &stp, sizeof(struct timespec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysClockNanoSleep()

int SysClockNanoSleep	(	clockid_t	clk,
		int	flags,
		const struct timespec *	req,
		struct timespec *	rem
	)

在文件 time_syscall.c 第 331 行定义.

{
    int ret;
    struct timespec sreq;
    struct timespec srem = { 0 };
 
    if (!req || LOS_ArchCopyFromUser(&sreq, req, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = clock_nanosleep(clk, flags, &sreq, rem ? &srem : NULL);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (rem && LOS_ArchCopyToUser(rem, &srem, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysClockNanoSleep64()

int SysClockNanoSleep64	(	clockid_t	clk,
		int	flags,
		const struct timespec64 *	req,
		struct timespec64 *	rem
	)

在文件 time_syscall.c 第 489 行定义.

{
    int ret;
    struct timespec rq;
    struct timespec rm = { 0 };
    struct timespec64 sreq;
    struct timespec64 srem = { 0 };
 
    if (!req || LOS_ArchCopyFromUser(&sreq, req, sizeof(struct timespec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    if (req != NULL) {
        rq.tv_sec = (sreq.tv_sec > UINT32_MAX) ? UINT32_MAX : sreq.tv_sec;
        rq.tv_nsec = sreq.tv_nsec;
    }
 
    ret = clock_nanosleep(clk, flags, &rq, rem ? &rm : NULL);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (rem != NULL) {
        srem.tv_sec = rm.tv_sec;
        srem.tv_nsec = rm.tv_nsec;
        if (LOS_ArchCopyToUser(rem, &srem, sizeof(struct timespec64))) {
            errno = EFAULT;
            return -EFAULT;
        }
    }
 
    return ret;
}

函数调用图:

SysClockSettime()

int SysClockSettime	(	clockid_t	clockID,
		const struct timespec *	tp
	)

在文件 time_syscall.c 第 263 行定义.

{
    int ret;
    struct timespec stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (LOS_ArchCopyFromUser(&stp, tp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = clock_settime(clockID, &stp);
    if (ret < 0) {
        return -get_errno();
    }
    return ret;
}

函数调用图:

SysClockSettime64()

int SysClockSettime64	(	clockid_t	clockID,
		const struct timespec64 *	tp
	)

在文件 time_syscall.c 第 405 行定义.

{
    int ret;
    struct timespec t;
    struct timespec64 stp;
 
    if (tp == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (LOS_ArchCopyFromUser(&stp, tp, sizeof(struct timespec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    if (stp.tv_sec > UINT32_MAX) {
        errno = ENOSYS;
        return -ENOSYS;
    }
    t.tv_sec = stp.tv_sec;
    t.tv_nsec = stp.tv_nsec;
 
    ret = clock_settime(clockID, &t);
    if (ret < 0) {
        return -get_errno();
    }
    return ret;
}

函数调用图:

SysGetiTimer()

int SysGetiTimer	(	int	which,
		struct itimerval *	value
	)

在文件 time_syscall.c 第 137 行定义.

{
    int ret;
    struct itimerval svalue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = getitimer(which, &svalue);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (LOS_ArchCopyToUser(value, &svalue, sizeof(struct itimerval))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysNanoSleep()

int SysNanoSleep	(	const struct timespec *	rqtp,
		struct timespec *	rmtp
	)

在文件 time_syscall.c 第 355 行定义.

{
    int ret;
    struct timespec srqtp;
    struct timespec srmtp;
 
    if (!rqtp || LOS_ArchCopyFromUser(&srqtp, rqtp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    if (rmtp && LOS_ArchCopyFromUser(&srmtp, rmtp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = nanosleep(&srqtp, rmtp ? &srmtp : NULL);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (rmtp && LOS_ArchCopyToUser(rmtp, &srmtp, sizeof(struct timespec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysSetiTimer()

int SysSetiTimer	(	int	which,
		const struct itimerval *	value,
		struct itimerval *	ovalue
	)

在文件 time_syscall.c 第 108 行定义.

{
    int ret;
    struct itimerval svalue;
    struct itimerval sovalue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (LOS_ArchCopyFromUser(&svalue, value, sizeof(struct itimerval))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = setitimer(which, &svalue, &sovalue);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (ovalue && LOS_ArchCopyToUser(ovalue, &sovalue, sizeof(struct itimerval))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTime()

time_t SysTime

(

time_t *

tloc

)

在文件 time_syscall.c 第 90 行定义.

{
    int ret;
    time_t stloc;
 
    ret = time(tloc ? &stloc : NULL);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (tloc && LOS_ArchCopyToUser(tloc, &stloc, sizeof(time_t))) {
        errno = EFAULT;
        ret = -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTimerCreate()

int SysTimerCreate	(	clockid_t	clockID,
		struct ksigevent *	evp,
		timer_t *	timerID
	)

在文件 time_syscall.c 第 160 行定义.

{
    int ret;
    timer_t stimerID;
    struct ksigevent ksevp;
 
    if (timerID == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (evp && LOS_ArchCopyFromUser(&ksevp, evp, sizeof(struct ksigevent))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = OsTimerCreate(clockID, evp ? &ksevp : NULL, &stimerID);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (LOS_ArchCopyToUser(timerID, &stimerID, sizeof(timer_t))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTimerDelete()

int SysTimerDelete

(

timer_t

timerID

)

在文件 time_syscall.c 第 252 行定义.

{
    int ret;
 
    ret = timer_delete(timerID);
    if (ret < 0) {
        return -get_errno();
    }
    return ret;
}

函数调用图:

SysTimerGetoverrun()

int SysTimerGetoverrun

(

timer_t

timerID

)

在文件 time_syscall.c 第 241 行定义.

{
    int ret;
 
    ret = timer_getoverrun(timerID);
    if (ret < 0) {
        return -get_errno();
    }
    return ret;
}

函数调用图:

SysTimerGettime()

int SysTimerGettime	(	timer_t	timerID,
		struct itimerspec *	value
	)

在文件 time_syscall.c 第 189 行定义.

{
    int ret;
    struct itimerspec svalue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = timer_gettime(timerID, &svalue);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (LOS_ArchCopyToUser(value, &svalue, sizeof(struct itimerspec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTimerGettime64()

int SysTimerGettime64	(	timer_t	timerID,
		struct itimerspec64 *	value
	)

在文件 time_syscall.c 第 524 行定义.

{
    int ret;
    struct itimerspec val;
    struct itimerspec64 svalue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    ret = timer_gettime(timerID, &val);
    if (ret < 0) {
        return -get_errno();
    }
 
    svalue.it_interval.tv_sec = val.it_interval.tv_sec;
    svalue.it_interval.tv_nsec = val.it_interval.tv_nsec;
    svalue.it_value.tv_sec = val.it_value.tv_sec;
    svalue.it_value.tv_nsec = val.it_value.tv_nsec;
 
    if (LOS_ArchCopyToUser(value, &svalue, sizeof(struct itimerspec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTimerSettime()

int SysTimerSettime	(	timer_t	timerID,
		int	flags,
		const struct itimerspec *	value,
		struct itimerspec *	oldValue
	)

在文件 time_syscall.c 第 212 行定义.

{
    int ret;
    struct itimerspec svalue;
    struct itimerspec soldValue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (LOS_ArchCopyFromUser(&svalue, value, sizeof(struct itimerspec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = timer_settime(timerID, flags, &svalue, &soldValue);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (oldValue && LOS_ArchCopyToUser(oldValue, &soldValue, sizeof(struct itimerspec))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysTimerSettime64()

int SysTimerSettime64	(	timer_t	timerID,
		int	flags,
		const struct itimerspec64 *	value,
		struct itimerspec64 *	oldValue
	)

在文件 time_syscall.c 第 553 行定义.

{
    int ret;
    struct itimerspec val;
    struct itimerspec oldVal;
    struct itimerspec64 svalue;
    struct itimerspec64 soldValue;
 
    if (value == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    if (LOS_ArchCopyFromUser(&svalue, value, sizeof(struct itimerspec64))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    if (svalue.it_interval.tv_sec > UINT32_MAX || svalue.it_value.tv_sec > UINT32_MAX) {
        errno = ENOSYS;
        return -ENOSYS;
    }
 
    val.it_interval.tv_sec = svalue.it_interval.tv_sec;
    val.it_interval.tv_nsec = svalue.it_interval.tv_nsec;
    val.it_value.tv_sec = svalue.it_value.tv_sec;
    val.it_value.tv_nsec = svalue.it_value.tv_nsec;
 
    ret = timer_settime(timerID, flags, &val, oldValue ? &oldVal : NULL);
    if (ret < 0) {
        return -get_errno();
    }
 
    if (oldValue != NULL) {
        soldValue.it_interval.tv_sec = oldVal.it_interval.tv_sec;
        soldValue.it_interval.tv_nsec = oldVal.it_interval.tv_nsec;
        soldValue.it_value.tv_sec = oldVal.it_value.tv_sec;
        soldValue.it_value.tv_nsec = oldVal.it_value.tv_nsec;
 
        if (LOS_ArchCopyToUser(oldValue, &soldValue, sizeof(struct itimerspec64))) {
            errno = EFAULT;
            return -EFAULT;
        }
    }
 
    return ret;
}

函数调用图:

SysTimes()

clock_t SysTimes

(

struct tms *

buf

)

在文件 time_syscall.c 第 384 行定义.

{
    clock_t ret;
    struct tms sbuf;
 
    if (buf == NULL) {
        errno = EFAULT;
        return -EFAULT;
    }
    ret = times(&sbuf);
    if (ret == -1) {
        return -get_errno();
    }
    if (LOS_ArchCopyToUser(buf, &sbuf, sizeof(struct tms))) {
        errno = EFAULT;
        return -EFAULT;
    }
 
    return ret;
}

函数调用图:

SysUtime()

int SysUtime	(	const char *	path,
		const struct utimbuf *	ptimes
	)

在文件 time_syscall.c 第 45 行定义.

{
    int ret;
    char *spath = NULL;
    struct utimbuf sptimes;
 
    if (path == NULL) {
        errno = EINVAL;
        return -EINVAL;
    }
 
    spath = LOS_MemAlloc(m_aucSysMem0, PATH_MAX + 1);
    if (spath == NULL) {
        errno = ENOMEM;
        return -ENOMEM;
    }
 
    ret = LOS_StrncpyFromUser(spath, path, PATH_MAX + 1);
    if (ret == -EFAULT) {
        LOS_MemFree(m_aucSysMem0, spath);
        return ret;
    } else if (ret > PATH_MAX) {
        LOS_MemFree(m_aucSysMem0, spath);
        PRINT_ERR("%s[%d], path exceeds maxlen: %d\n", __FUNCTION__, __LINE__, PATH_MAX);
        return -ENAMETOOLONG;
    }
    spath[ret] = '\0';
 
    if (ptimes && LOS_ArchCopyFromUser(&sptimes, ptimes, sizeof(struct utimbuf))) {
        LOS_MemFree(m_aucSysMem0, spath);
        errno = EFAULT;
        return -EFAULT;
    }
 
    ret = utime(spath, ptimes ? &sptimes : NULL);
    if (ret < 0) {
        ret = -get_errno();
    }
 
    LOS_MemFree(m_aucSysMem0, spath);
 
    return ret;
}

函数调用图: