Add support for get_config_item and set_config_item

Signed-off-by: Patrick Toomey <ptoomey3@biasedcoin.com>

src/lxc/confile.c

@@ -2510,6 +2510,10 @@ int lxc_get_config_item(struct lxc_conf *c, const char *key, char *retv,
 		return lxc_get_item_environment(c, retv, inlen);
 	else if (strcmp(key, "lxc.init_cmd") == 0)
 		v = c->init_cmd;
+	else if (strcmp(key, "lxc.init_uid") == 0)
+		return lxc_get_conf_int(c, retv, inlen, c->init_uid);
+	else if (strcmp(key, "lxc.init_gid") == 0)
+		return lxc_get_conf_int(c, retv, inlen, c->init_gid);
 	else return -1;
 
 	if (!v)

src/tests/get_item.c

@@ -88,6 +88,32 @@ int main(int argc, char *argv[])
 	}
 	printf("lxc.arch returned %d %s\n", ret, v2);
 
+	if (!c->set_config_item(c, "lxc.init_uid", "100")) {
+		fprintf(stderr, "%d: failed to set init_uid\n", __LINE__);
+		ret = 1;
+		goto out;
+	}
+	ret = c->get_config_item(c, "lxc.init_uid", v2, 255);
+	if (ret < 0) {
+		fprintf(stderr, "%d: get_config_item(lxc.init_uid) returned %d\n", __LINE__, ret);
+		ret = 1;
+		goto out;
+	}
+	printf("lxc.init_uid returned %d %s\n", ret, v2);
+
+	if (!c->set_config_item(c, "lxc.init_gid", "100")) {
+		fprintf(stderr, "%d: failed to set init_gid\n", __LINE__);
+		ret = 1;
+		goto out;
+	}
+	ret = c->get_config_item(c, "lxc.init_gid", v2, 255);
+	if (ret < 0) {
+		fprintf(stderr, "%d: get_config_item(lxc.init_gid) returned %d\n", __LINE__, ret);
+		ret = 1;
+		goto out;
+	}
+	printf("lxc.init_gid returned %d %s\n", ret, v2);
+
 #define HNAME "hostname1"
 	// demonstrate proper usage:
 	char *alloced;