VMOD processing want to before/after VCL function processing. But, I do not want to write extra line. How to do it? Can be realized by the replace the pointer to sp->vcl->XXXX_func (VCL_XXXX) Can be added to the processing by replacing pointer static vcl_func_f *vmod_redirect_Hook_vcl_error = NULL; static pthread_mutex_t vmod_redirect_mutex = PTHREAD_MUTEX_INITIALIZER; static unsigned hook_done =