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

#include <signal.h>

int siginterrupt(int sig, int flag) {
    struct sigaction sa;

    sigaction(sig, 0, &sa);
    if (flag)
        sa.sa_flags &= ~SA_RESTART;
    else
        sa.sa_flags |= SA_RESTART;

    return sigaction(sig, &sa, 0);
}