main: prepend error tag to printed errors when parsing options

Prepend "Error: " tag to printed errors in the option parsing step.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/src/main.c b/src/main.c
index d13952ccb16b5ba44d718a8cbcad0f6da69b4ddf..72151e62d410ae31929a1dd2d75ed4a1f9ea223d 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -395,7 +395,7 @@ int main(int argc, char * const *argv)
                case OPT_DEFINE:
                        if (nft_ctx_add_var(nft, optarg)) {
                                fprintf(stderr,
-                                       "Failed to define variable '%s'\n",
+                                       "Error: Failed to define variable '%s'\n",
                                        optarg);
                                goto out_fail;
                        }
@@ -457,7 +457,7 @@ int main(int argc, char * const *argv)
                                }
 
                                if (i == array_size(debug_param)) {
-                                       fprintf(stderr, "invalid debug parameter `%s'\n",
+                                       fprintf(stderr, "Error: invalid debug parameter `%s'\n",
                                                optarg);
                                        goto out_fail;
                                }
@@ -478,7 +478,7 @@ int main(int argc, char * const *argv)
 #ifdef HAVE_LIBJANSSON
                        output_flags |= NFT_CTX_OUTPUT_JSON;
 #else
-                       fprintf(stderr, "JSON support not compiled-in\n");
+                       fprintf(stderr, "Error: JSON support not compiled-in\n");
                        goto out_fail;
 #endif
                        break;