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[Qemu-devel] [PATCH v3 11/12] qga: add --dump-conf option


From: marcandre . lureau
Subject: [Qemu-devel] [PATCH v3 11/12] qga: add --dump-conf option
Date: Wed, 26 Aug 2015 12:05:24 +0200

From: Marc-André Lureau <address@hidden>

This new option allows to review the agent configuration,
and ease the task of writing a configuration file.

Signed-off-by: Marc-André Lureau <address@hidden>
Reviewed-by: Michael Roth <address@hidden>
---
 qga/main.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/qga/main.c b/qga/main.c
index 9193043..72dc366 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -941,6 +941,7 @@ typedef struct GAConfig {
     GList *blacklist;
     int daemonize;
     GLogLevelFlags log_level;
+    int dumpconf;
 } GAConfig;
 
 static void config_load(GAConfig *config)
@@ -1009,6 +1010,58 @@ end:
     g_clear_error(&gerr);
 }
 
+static gchar *list_join(GList *list, const gchar separator)
+{
+    GString *str = g_string_new("");
+
+    while (list) {
+        str = g_string_append(str, (gchar *)list->data);
+        list = g_list_next(list);
+        if (list) {
+            str = g_string_append_c(str, separator);
+        }
+    }
+
+    return g_string_free(str, FALSE);
+}
+
+static void config_dump(GAConfig *config)
+{
+    GError *error = NULL;
+    GKeyFile *keyfile;
+    gchar *tmp;
+
+    keyfile = g_key_file_new();
+    g_key_file_set_boolean(keyfile, "general", "daemon", config->daemonize);
+    g_key_file_set_string(keyfile, "general", "method", config->method);
+    g_key_file_set_string(keyfile, "general", "path", config->channel_path);
+    if (config->log_filepath) {
+        g_key_file_set_string(keyfile, "general", "logfile",
+                              config->log_filepath);
+    }
+    g_key_file_set_string(keyfile, "general", "pidfile", config->pid_filepath);
+#ifdef CONFIG_FSFREEZE
+    if (config->fsfreeze_hook) {
+        g_key_file_set_string(keyfile, "general", "fsfreeze-hook",
+                              config->fsfreeze_hook);
+    }
+#endif
+    g_key_file_set_string(keyfile, "general", "statedir", config->state_dir);
+    g_key_file_set_boolean(keyfile, "general", "verbose",
+                           config->log_level == G_LOG_LEVEL_MASK);
+    tmp = list_join(config->blacklist, ',');
+    g_key_file_set_string(keyfile, "general", "blacklist", tmp);
+    g_free(tmp);
+
+    tmp = g_key_file_to_data(keyfile, NULL, &error);
+    printf("%s", tmp);
+
+    g_free(tmp);
+    if (keyfile) {
+        g_key_file_free(keyfile);
+    }
+}
+
 static void config_parse(GAConfig *config, int argc, char **argv)
 {
     const char *sopt = "hVvdm:p:l:f:F::b:s:t:D";
@@ -1016,6 +1069,7 @@ static void config_parse(GAConfig *config, int argc, char 
**argv)
     const struct option lopt[] = {
         { "help", 0, NULL, 'h' },
         { "version", 0, NULL, 'V' },
+        { "dump-conf", 0, NULL, 'D' },
         { "logfile", 1, NULL, 'l' },
         { "pidfile", 1, NULL, 'f' },
 #ifdef CONFIG_FSFREEZE
@@ -1067,6 +1121,9 @@ static void config_parse(GAConfig *config, int argc, char 
**argv)
         case 'd':
             config->daemonize = 1;
             break;
+        case 'D':
+            config->dumpconf = 1;
+            break;
         case 'b': {
             if (is_help_option(optarg)) {
                 qmp_for_each_command(ga_print_cmd, NULL);
@@ -1310,6 +1367,11 @@ int main(int argc, char **argv)
                                                  config->state_dir);
     s->frozen = check_is_frozen(s);
 
+    if (config->dumpconf) {
+        config_dump(config);
+        goto end;
+    }
+
     ret = run_agent(s, config);
 
 end:
-- 
2.4.3




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