Plan 9 from Bell Labs’s /usr/web/sources/contrib/quanstro/rescue/nsec.c
#include <u.h> #include <libc.h> vlong nsec(void) { uchar b[8]; int fd; fd = open("/dev/bintime", OREAD); if(fd != -1) if(pread(fd, b, sizeof b, 0) == sizeof b){ close(fd); return getbe(b, sizeof b); } close(fd); return 0; }