Function ff_hook_accept4

adapter/syscall/ff_hook_syscall.c:731–795

}

int
ff_hook_accept4(int fd, struct sockaddr *addr,
    socklen_t *addrlen, int flags)
{
    DEBUG_LOG("ff_hook_accept4, fd:%d, addr:%p, addrlen:%p, flags:%d\n", fd, addr, addrlen, flags);

    CHECK_FD_OWNERSHIP(accept4, (fd, addr, addrlen, flags));

    DEFINE_REQ_ARGS_STATIC(accept4);
    static __thread struct sockaddr *sh_addr = NULL;
    static __thread socklen_t sh_addr_len = 0;
    static __thread socklen_t *sh_addrlen = NULL;

    if (addr != NULL) {
        if (sh_addr == NULL || sh_addr_len < *addrlen) {
            if(sh_addr) {
                share_mem_free(sh_addr);
            }

            sh_addr_len = *addrlen;
            sh_addr = share_mem_alloc(sh_addr_len);
            if (sh_addr == NULL) {
                RETURN_ERROR_NOFREE(ENOMEM);
            }
        }

        if (sh_addrlen == NULL) {
            sh_addrlen = share_mem_alloc(sizeof(socklen_t));
            if (sh_addrlen == NULL) {
                //share_mem_free(sh_addr); // Don't free
                RETURN_ERROR_NOFREE(ENOMEM);
            }
        }
        *sh_addrlen = *addrlen;

        args->addr = sh_addr;
        args->addrlen = sh_addrlen;
        args->flags = flags;
    }else {
        args->addr = NULL;
        args->addrlen = NULL;
        args->flags = flags;
    }

    args->fd = fd;

    SYSCALL(FF_SO_ACCEPT4, args);

    if (ret > 0) {
        ret = convert_fstack_fd(ret);
    }

    if (addr) {
        if (ret > 0) {
            socklen_t cplen = *sh_addrlen > *addrlen ?
                *addrlen : *sh_addrlen;
            rte_memcpy(addr, sh_addr, cplen);
            *addrlen = *sh_addrlen;