third_party/ulib/musl/src/signal/sigwait.c

#include <signal.h>

int sigwait(const sigset_t* restrict mask, int* restrict sig) {
    siginfo_t si;
    if (sigtimedwait(mask, &si, 0) < 0)
        return -1;
    *sig = si.si_signo;
    return 0;
}