add examples/remoteshell.py as query usage example

examples/remoteshell.py

@@ -0,0 +1,31 @@
+# Sample to demonstrate usage of URI with query as a way 
+# to send command remotely
+# 
+# usage:
+# export TARGET_IP=192.168.1.5
+# python remoteshell.py motd%3fmemset=p
+#
+
+#!/usr/bin/python3
+import nbd
+import os
+import sys
+
+# TODO read from cli first [-h hostname]
+host = os.environ['TARGET_IP']
+if not host:
+    print("no host")
+
+n = len(sys.argv)
+if n > 1:
+    query = sys.argv[1]
+
+# would need encoding URI
+
+h = nbd.NBD()
+uri = "nbd://" + host + '/' + query
+
+h.connect_uri(uri)
+ret = h.pread(512, 0)
+s = str(ret, 'utf-8')
+print(s)

plugins/memory/memory.c

@@ -82,7 +82,7 @@ static int memory_query(void *handle, struct query_param *params, int nb_params)
         } else if (0 == strcmp(params[nb_params].key, "memset")) {
             if (params[nb_params].val != NULL) {
                 LOG("val = %s\n", params[nb_params].val);
-                memset((char *)h->base, 75, h->size);
+                memset((char *)h->base, params[nb_params].val[0], h->size);
             }
         }
     }