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authorMarc-André Lureau <marcandre.lureau@redhat.com>2015-08-27 01:34:57 +0200
committerMichael Roth <mdroth@linux.vnet.ibm.com>2015-09-01 13:16:25 -0500
commite236d060cba8d2d6d26a7e076c895d2a6812dafb (patch)
tree1f27f505ff933fe7ccc662619e7dc3b209fbe82d /qga/main.c
parentd4c8a5d49e514bfeac2040ee5371b4e6a7d8d561 (diff)
qga: add an optional qemu-ga.conf system configuration
Learn to configure the agent with a system configuration. This may simplify command-line handling, especially when the blacklist is long. Among the other benefits, this may standardize the configuration of an init service (instead of distro-specific init keys/files) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: Denis V. Lunev <den@openvz.org> * removed unecessary keyfile != NULL prior to free Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'qga/main.c')
-rw-r--r--qga/main.c84
1 files changed, 77 insertions, 7 deletions
diff --git a/qga/main.c b/qga/main.c
index fc0769657c..cc7a910cfc 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -56,6 +56,7 @@
#define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook"
#endif
#define QGA_SENTINEL_BYTE 0xFF
+#define QGA_CONF_DEFAULT CONFIG_QEMU_CONFDIR G_DIR_SEPARATOR_S "qemu-ga.conf"
static struct {
const char *state_dir;
@@ -931,14 +932,78 @@ typedef struct GAConfig {
#ifdef _WIN32
const char *service;
#endif
+ gchar *bliststr; /* blacklist may point to this string */
GList *blacklist;
int daemonize;
GLogLevelFlags log_level;
} GAConfig;
-static GAConfig *config_parse(int argc, char **argv)
+static void config_load(GAConfig *config)
+{
+ GError *gerr = NULL;
+ GKeyFile *keyfile;
+
+ /* read system config */
+ keyfile = g_key_file_new();
+ if (!g_key_file_load_from_file(keyfile, QGA_CONF_DEFAULT, 0, &gerr)) {
+ goto end;
+ }
+ if (g_key_file_has_key(keyfile, "general", "daemon", NULL)) {
+ config->daemonize =
+ g_key_file_get_boolean(keyfile, "general", "daemon", &gerr);
+ }
+ if (g_key_file_has_key(keyfile, "general", "method", NULL)) {
+ config->method =
+ g_key_file_get_string(keyfile, "general", "method", &gerr);
+ }
+ if (g_key_file_has_key(keyfile, "general", "path", NULL)) {
+ config->channel_path =
+ g_key_file_get_string(keyfile, "general", "path", &gerr);
+ }
+ if (g_key_file_has_key(keyfile, "general", "logfile", NULL)) {
+ config->log_filepath =
+ g_key_file_get_string(keyfile, "general", "logfile", &gerr);
+ }
+ if (g_key_file_has_key(keyfile, "general", "pidfile", NULL)) {
+ config->pid_filepath =
+ g_key_file_get_string(keyfile, "general", "pidfile", &gerr);
+ }
+#ifdef CONFIG_FSFREEZE
+ if (g_key_file_has_key(keyfile, "general", "fsfreeze-hook", NULL)) {
+ config->fsfreeze_hook =
+ g_key_file_get_string(keyfile,
+ "general", "fsfreeze-hook", &gerr);
+ }
+#endif
+ if (g_key_file_has_key(keyfile, "general", "statedir", NULL)) {
+ config->state_dir =
+ g_key_file_get_string(keyfile, "general", "statedir", &gerr);
+ }
+ if (g_key_file_has_key(keyfile, "general", "verbose", NULL) &&
+ g_key_file_get_boolean(keyfile, "general", "verbose", &gerr)) {
+ /* enable all log levels */
+ config->log_level = G_LOG_LEVEL_MASK;
+ }
+ if (g_key_file_has_key(keyfile, "general", "blacklist", NULL)) {
+ config->bliststr =
+ g_key_file_get_string(keyfile, "general", "blacklist", &gerr);
+ config->blacklist = g_list_concat(config->blacklist,
+ split_list(config->bliststr, ","));
+ }
+
+end:
+ g_key_file_free(keyfile);
+ if (gerr &&
+ !(gerr->domain == G_FILE_ERROR && gerr->code == G_FILE_ERROR_NOENT)) {
+ g_critical("error loading configuration from path: %s, %s",
+ QGA_CONF_DEFAULT, gerr->message);
+ exit(EXIT_FAILURE);
+ }
+ g_clear_error(&gerr);
+}
+
+static void config_parse(GAConfig *config, int argc, char **argv)
{
- GAConfig *config = g_new0(GAConfig, 1);
const char *sopt = "hVvdm:p:l:f:F::b:s:t:D";
int opt_ind = 0, ch;
const struct option lopt[] = {
@@ -966,23 +1031,29 @@ static GAConfig *config_parse(int argc, char **argv)
while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
switch (ch) {
case 'm':
+ g_free(config->method);
config->method = g_strdup(optarg);
break;
case 'p':
+ g_free(config->channel_path);
config->channel_path = g_strdup(optarg);
break;
case 'l':
+ g_free(config->log_filepath);
config->log_filepath = g_strdup(optarg);
break;
case 'f':
+ g_free(config->pid_filepath);
config->pid_filepath = g_strdup(optarg);
break;
#ifdef CONFIG_FSFREEZE
case 'F':
+ g_free(config->fsfreeze_hook);
config->fsfreeze_hook = g_strdup(optarg ?: QGA_FSFREEZE_HOOK_DEFAULT);
break;
#endif
case 't':
+ g_free(config->state_dir);
config->state_dir = g_strdup(optarg);
break;
case 'v':
@@ -1042,8 +1113,6 @@ static GAConfig *config_parse(int argc, char **argv)
exit(EXIT_FAILURE);
}
}
-
- return config;
}
static void config_free(GAConfig *config)
@@ -1053,6 +1122,7 @@ static void config_free(GAConfig *config)
g_free(config->pid_filepath);
g_free(config->state_dir);
g_free(config->channel_path);
+ g_free(config->bliststr);
#ifdef CONFIG_FSFREEZE
g_free(config->fsfreeze_hook);
#endif
@@ -1200,13 +1270,13 @@ int main(int argc, char **argv)
{
int ret = EXIT_SUCCESS;
GAState *s = g_new0(GAState, 1);
- GAConfig *config;
+ GAConfig *config = g_new0(GAConfig, 1);
module_call_init(MODULE_INIT_QAPI);
init_dfl_pathnames();
-
- config = config_parse(argc, argv);
+ config_load(config);
+ config_parse(config, argc, argv);
if (config->pid_filepath == NULL) {
config->pid_filepath = g_strdup(dfl_pathnames.pidfile);