Changeset 3113d47 in mainline for kernel/genarch/src/ofw/ofw_tree.c

Timestamp:

2012-03-02T16:17:11Z (12 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0499235

Parents:

196c253

Message:

export OpenFirmware device node properties using sysinfo

File:

• kernel/genarch/src/ofw/ofw_tree.c (modified) (2 diffs)

kernel/genarch/src/ofw/ofw_tree.c

@@ -320 +320 @@
 }
 
+/** Get OpenFirmware node properties.
+ *
+ * @param item    Sysinfo item (unused).
+ * @param size    Size of the returned data.
+ * @param dry_run Do not get the data, just calculate the size.
+ * @param data    OpenFirmware node.
+ *
+ * @return Data containing a serialized dump of all node
+ *         properties. If the return value is not NULL, it
+ *         should be freed in the context of the sysinfo request.
+ *
+ */
+static void *ofw_sysinfo_properties(struct sysinfo_item *item, size_t *size,
+    bool dry_run, void *data)
+{
+        ofw_tree_node_t *node = (ofw_tree_node_t *) data;
+        
+        /* Compute serialized data size */
+        *size = 0;
+        for (size_t i = 0; i < node->properties; i++)
+                *size += str_size(node->property[i].name) + 1 +
+                    sizeof(node->property[i].size) + node->property[i].size;
+        
+        if (dry_run)
+                return NULL;
+        
+        void *dump = malloc(*size, FRAME_ATOMIC);
+        if (dump == NULL) {
+                *size = 0;
+                return NULL;
+        }
+        
+        /* Serialize the data */
+        size_t pos = 0;
+        for (size_t i = 0; i < node->properties; i++) {
+                /* Property name */
+                str_cpy(dump + pos, *size - pos, node->property[i].name);
+                pos += str_size(node->property[i].name) + 1;
+                
+                /* Value size */
+                memcpy(dump + pos, &node->property[i].size,
+                    sizeof(node->property[i].size));
+                pos += sizeof(node->property[i].size);
+                
+                /* Value */
+                memcpy(dump + pos, node->property[i].value,
+                    node->property[i].size);
+                pos += node->property[i].size;
+        }
+        
+        return ((void *) dump);
+}
+
 /** Map OpenFirmware device subtree rooted in a node into sysinfo.
  *
@@ -339 +392 @@
                         snprintf(cur_path, PATH_MAX_LEN, "firmware.%s", cur->da_name);
                 
-                sysinfo_set_item_undefined(cur_path, NULL);
+                sysinfo_set_item_gen_data(cur_path, NULL, ofw_sysinfo_properties,
+                    (void *) cur);
                 
                 if (cur->child)