more verbose error reporting

diff --git a/input/packet/ulogd_inppkt_NFLOG.c b/input/packet/ulogd_inppkt_NFLOG.c
index 7e9a00a6d15eaec8b9a864a7f60721861f65550a..e04799e8cadbb7a83dd8aa156f7c82a2750fefac 100644 (file)
--- a/input/packet/ulogd_inppkt_NFLOG.c
+++ b/input/packet/ulogd_inppkt_NFLOG.c
@@ -312,22 +312,35 @@ static int start(struct ulogd_pluginstance *upi)
                goto out_handle;
 
        if (unbind_ce(upi->config_kset).u.value > 0) {
-               ulogd_log(ULOGD_NOTICE, "forcing unbind of existing log handler for "
-                         "protocol %d\n", af_ce(upi->config_kset).u.value);
-               nflog_unbind_pf(ui->nful_h, af_ce(upi->config_kset).u.value);
+               ulogd_log(ULOGD_NOTICE, "forcing unbind of existing log "
+                         "handler for protocol %d\n", 
+                         af_ce(upi->config_kset).u.value);
+               if (nflog_unbind_pf(ui->nful_h, 
+                                   af_ce(upi->config_kset).u.value) < 0) {
+                       ulogd_log(ULOGD_ERROR, "unable to force-unbind "
+                                 "existing log handler for protocol %d\n",
+                                 af_ce(upi->config_kset).u.value);
+                       goto out_handle;
+               }
        }
 
        ulogd_log(ULOGD_DEBUG, "binding to protocol family %d\n",
                  af_ce(upi->config_kset).u.value);
-       if (nflog_bind_pf(ui->nful_h, af_ce(upi->config_kset).u.value) < 0)
+       if (nflog_bind_pf(ui->nful_h, af_ce(upi->config_kset).u.value) < 0) {
+               ulogd_log(ULOGD_ERROR, "unable to bind to protocol family %d\n",
+                         af_ce(upi->config_kset).u.value);
                goto out_bind_pf;
+       }
 
        ulogd_log(ULOGD_DEBUG, "binding to log group %d\n",
                  group_ce(upi->config_kset).u.value);
        ui->nful_gh = nflog_bind_group(ui->nful_h,
                                       group_ce(upi->config_kset).u.value);
-       if (!ui->nful_gh)
+       if (!ui->nful_gh) {
+               ulogd_log(ULOGD_ERROR, "unable to bind to log group %d\n",
+                         group_ce(upi->config_kset).u.value);
                goto out_bind;
+       }
 
        nflog_set_mode(ui->nful_gh, NFULNL_COPY_PACKET, 0xffff);