From: lakshminarayanagurram <lakshminarayana@elear.solutions>
Date: Mon, 25 Feb 2019 10:01:38 +0000 (+0100)
Subject: Add devtool_get_all_submeshes().
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=556532a450e55746e0f5c1c580d109b2744566da

Add devtool_get_all_submeshes().
---

diff --git a/src/devtools.c b/src/devtools.c
index 6d22516d..6d78119c 100644
--- a/src/devtools.c
+++ b/src/devtools.c
@@ -23,6 +23,7 @@
 #include "logger.h"
 #include "meshlink_internal.h"
 #include "node.h"
+#include "submesh.h"
 #include "splay_tree.h"
 #include "netutl.h"
 #include "xalloc.h"
@@ -280,6 +281,36 @@ void devtool_get_node_status(meshlink_handle_t *mesh, meshlink_node_t *node, dev
 	pthread_mutex_unlock(&mesh->mesh_mutex);
 }
 
+meshlink_submesh_t **devtool_get_all_submeshes(meshlink_handle_t *mesh, meshlink_submesh_t **submeshes, size_t *nmemb) {
+	if(!mesh || !nmemb || (*nmemb && !submeshes)) {
+		meshlink_errno = MESHLINK_EINVAL;
+		return NULL;
+	}
+
+	meshlink_submesh_t **result;
+
+	//lock mesh->nodes
+	pthread_mutex_lock(&(mesh->mesh_mutex));
+
+	*nmemb = mesh->submeshes->count;
+	result = realloc(submeshes, *nmemb * sizeof(*submeshes));
+
+	if(result) {
+		meshlink_submesh_t **p = result;
+
+		for list_each(submesh_t, s, mesh->submeshes) {
+			*p++ = (meshlink_submesh_t *)s;
+		}
+	} else {
+		*nmemb = 0;
+		free(submeshes);
+		meshlink_errno = MESHLINK_ENOMEM;
+	}
+
+	pthread_mutex_unlock(&(mesh->mesh_mutex));
+
+	return result;
+}
 meshlink_handle_t *devtool_open_in_netns(const char *confbase, const char *name, const char *appname, dev_class_t devclass, int netns) {
 	meshlink_open_params_t *params = meshlink_open_params_init(confbase, name, appname, devclass);
 	params->netns = dup(netns);
diff --git a/src/devtools.h b/src/devtools.h
index 92862632..3c5f9433 100644
--- a/src/devtools.h
+++ b/src/devtools.h
@@ -120,6 +120,20 @@ struct devtool_node_status {
  */
 extern void devtool_get_node_status(meshlink_handle_t *mesh, meshlink_node_t *node, devtool_node_status_t *status);
 
+/// Get the list of all submeshes of a meshlink instance.
+/** This function returns an array of submesh handles.
+ *  These pointers are the same pointers that are present in the submeshes list
+ *  in mesh handle.
+ *
+ *  @param mesh         A handle which represents an instance of MeshLink.
+ *  @param submeshes    A pointer to an array of submesh handles if any allocated previously.
+ *  @param nmemb        A pointer to a size_t variable that has
+ *                      to be provided by the caller.
+ *                      The contents of this variable will be changed to indicate
+ *                      the number if array elements.
+ */
+extern meshlink_submesh_t **devtool_get_all_submeshes(meshlink_handle_t *mesh, meshlink_submesh_t **submeshes, size_t *nmemb);
+
 /// Open a MeshLink instance in a given network namespace.
 /** This function opens MeshLink in the given network namespace.
  *