Subversion Repositories planix.SVN

#include <sys/types.h>
#include <time.h>
#include <sys/time.h>
#include <string.h>
#include "sys9.h"

typedef unsigned long long uvlong;
typedef long long vlong;
typedef unsigned char uchar;

static uvlong order = 0x0001020304050607ULL;

static void
be2vlong(vlong *to, uchar *f)
{
        uchar *t, *o;
        int i;

        t = (uchar*)to;
        o = (uchar*)&order;
        for(i = 0; i < 8; i++)
                t[o[i]] = f[i];
}

int
gettimeofday(struct timeval *tp, struct timezone *tzp)
{
        uchar b[8];
        vlong t;
        int opened;
        static int fd = -1;

        opened = 0;
        for(;;) {
                if(fd < 0)
                        if(opened++ ||
                            (fd = _OPEN("/dev/bintime", OREAD|OCEXEC)) < 0)
                                return 0;
                if(_PREAD(fd, b, sizeof b, 0) == sizeof b)
                        break;          /* leave fd open for future use */
                /* short read, perhaps try again */
                _CLOSE(fd);
                fd = -1;
        }
        be2vlong(&t, b);

        tp->tv_sec = t/1000000000;
        tp->tv_usec = (t/1000)%1000000;

        if(tzp) {
                tzp->tz_minuteswest = 4*60;     /* BUG */
                tzp->tz_dsttime = 1;
        }

        return 0;
}