fix(genesis): clamp narrow console headers

xCAT-genesis-builder/oe/meta-xcat-genesis/recipes-core/xcat-genesis-console/files/xcat-genesis-console/src/console.h

@@ -17,6 +17,7 @@ enum xcat_console_limit {
     LOG_LINE_SIZE = 384,
     LOG_VIEW_HEIGHT = 17,
     LOG_VIEW_WIDTH = 68,
+    HEADER_RESERVED_COLUMNS = 20,
 };
 
 struct console_state {
@@ -112,6 +113,7 @@ void xcat_format_duration(unsigned long long seconds, char *value, size_t size);
 bool xcat_read_unsigned_key(const char *path, const char *key, unsigned long long *number);
 unsigned int xcat_list_files(const char *directory, const char *suffix, char *names,
                              size_t names_size);
+int xcat_header_context_columns(int screen_columns);
 
 void xcat_load_console_state(struct console_state *state);
 void xcat_build_status_view(const struct console_state *state, struct status_view *view);

xCAT-genesis-builder/oe/meta-xcat-genesis/recipes-core/xcat-genesis-console/files/xcat-genesis-console/src/newt_ui.c

@@ -112,12 +112,11 @@ static void draw_header(const struct status_view *view) {
     int columns;
 
     newtGetScreenSize(&columns, NULL);
-    available = columns - 20;
+    available = xcat_header_context_columns(columns);
     xcat_set_text(context, sizeof(context), "%.*s", available, view->identity);
-    if ((int)strlen(context) > available)
-        context[available] = '\0';
     newtDrawRootText(1, 0, "xCAT Genesis");
-    newtDrawRootText(-((int)strlen(context) + 1), 0, context);
+    if (context[0] != '\0')
+        newtDrawRootText(-((int)strlen(context) + 1), 0, context);
 }
 
 static void update_form(struct console_form *screen, const struct status_view *view,

xCAT-genesis-builder/oe/meta-xcat-genesis/recipes-core/xcat-genesis-console/files/xcat-genesis-console/src/support.c

@@ -215,3 +215,9 @@ unsigned int xcat_list_files(const char *directory, const char *suffix, char *na
     closedir(stream);
     return count;
 }
+
+int xcat_header_context_columns(int screen_columns) {
+    if (screen_columns <= HEADER_RESERVED_COLUMNS)
+        return 0;
+    return screen_columns - HEADER_RESERVED_COLUMNS;
+}