1 #include <sys/select.h>
8 int select(int n, fd_set *restrict rfds, fd_set *restrict wfds, fd_set *restrict efds, struct timeval *restrict tv)
11 return syscall_cp(SYS_select, n, rfds, wfds, efds, tv);
13 syscall_arg_t data[2] = { 0, _NSIG/8 };
16 if (tv->tv_sec < 0 || tv->tv_usec < 0)
17 return __syscall_ret(-EINVAL);
18 time_t extra_secs = tv->tv_usec / 1000000;
19 ts.tv_nsec = tv->tv_usec % 1000000 * 1000;
20 const time_t max_time = (1ULL<<8*sizeof(time_t)-1)-1;
21 ts.tv_sec = extra_secs > max_time - tv->tv_sec ?
22 max_time : tv->tv_sec + extra_secs;
24 return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, tv ? &ts : 0, data);