gctl_get_paraml_opt
void *gctl_get_paraml_opt(struct gctl_req *req, const char *param, int len);
p = gctl_get_paraml_opt(req, param, len);
val = gctl_get_paraml_opt(req, "error", sizeof(*val));
val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val));
val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val));
val = gctl_get_paraml_opt(req, "offset", sizeof(*val));
val = gctl_get_paraml_opt(req, "size", sizeof(*val));
val = gctl_get_paraml_opt(req, "secsize", sizeof(*val));
val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val));
val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val));
val = gctl_get_paraml_opt(req, "error", sizeof(*val));
val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val));
val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val));
val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val));
val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val));
val = gctl_get_paraml_opt(req, name, sizeof(*val));