Function make_blocking

src/butil/fd_utility.cpp:50–59

}

int make_blocking(int fd) {
    const int flags = fcntl(fd, F_GETFL, 0);
    if (flags < 0) {
        return flags;
    }
    if (flags & O_NONBLOCK) {
        return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
    }
    return 0;
}

int make_close_on_exec(int fd) {
    return fcntl(fd, F_SETFD, FD_CLOEXEC);