- int r;
- CANCELPT_BEGIN;
- r = syscall(SYS_select, n, rfds, wfds, efds, tv);
- CANCELPT_TRY;
- CANCELPT_END;
- return r;
+#ifdef SYS_select
+ return syscall_cp(SYS_select, n, rfds, wfds, efds, tv);
+#else
+ syscall_arg_t data[2] = { 0, _NSIG/8 };
+ struct timespec ts;
+ if (tv) {
+ if (tv->tv_sec < 0 || tv->tv_usec < 0)
+ return __syscall_ret(-EINVAL);
+ time_t extra_secs = tv->tv_usec / 1000000;
+ ts.tv_nsec = tv->tv_usec % 1000000 * 1000;
+ const time_t max_time = (1ULL<<8*sizeof(time_t)-1)-1;
+ ts.tv_sec = extra_secs > max_time - tv->tv_sec ?
+ max_time : tv->tv_sec + extra_secs;
+ }
+ return syscall_cp(SYS_pselect6, n, rfds, wfds, efds, tv ? &ts : 0, data);
+#endif