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-rw-r--r--util/cbfstool/cbfs_sections.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/util/cbfstool/cbfs_sections.c b/util/cbfstool/cbfs_sections.c
new file mode 100644
index 000000000..81912d5b9
--- /dev/null
+++ b/util/cbfstool/cbfs_sections.c
@@ -0,0 +1,122 @@
+/*
+ * fmap_sections.c, track which sections of the image will contain CBFSes
+ *
+ * Copyright (C) 2015 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
+ */
+
+#include "cbfs_sections.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct descriptor_node {
+ const struct flashmap_descriptor *val;
+ struct descriptor_node *next;
+};
+
+static struct descriptor_list {
+ struct descriptor_node *head;
+ struct descriptor_node *tail;
+} cbfs_sections;
+
+static bool seen_primary_section = false;
+
+static void descriptor_list_prepend(struct descriptor_list *list,
+ struct descriptor_node *new_head)
+{
+ assert(list);
+ assert(new_head);
+
+ new_head->next = list->head;
+ list->head = new_head;
+ if (!list->tail)
+ list->tail = new_head;
+}
+
+static void descriptor_list_append(struct descriptor_list *list,
+ struct descriptor_node *new_tail)
+{
+ assert(list);
+ assert(new_tail);
+
+ if (list->tail)
+ list->tail->next = new_tail;
+ list->tail = new_tail;
+ if (!list->head)
+ list->head = new_tail;
+}
+
+/* Implementation of cbfs module's callback; invoked during fmd file parsing */
+bool fmd_process_annotation_impl(const struct flashmap_descriptor *node,
+ const char *annotation)
+{
+ if (strcmp(annotation, SECTION_ANNOTATION_CBFS) == 0 &&
+ node->list_len == 0) {
+ struct descriptor_node *list_node = malloc(sizeof(*list_node));
+ list_node->val = node;
+ list_node->next = NULL;
+
+ if (strcmp(node->name, SECTION_NAME_PRIMARY_CBFS) == 0) {
+ descriptor_list_prepend(&cbfs_sections, list_node);
+ seen_primary_section = true;
+ } else {
+ descriptor_list_append(&cbfs_sections, list_node);
+ }
+
+ return true;
+ }
+
+ return false;
+}
+
+cbfs_section_iterator_t cbfs_sections_iterator(void)
+{
+ return cbfs_sections.head;
+}
+
+bool cbfs_sections_iterator_advance(cbfs_section_iterator_t *it)
+{
+ assert(it);
+ if (!*it)
+ return false;
+
+ *it = (*it)->next;
+ return true;
+}
+
+const struct flashmap_descriptor *cbfs_sections_iterator_deref(
+ cbfs_section_iterator_t it)
+{
+ assert(it);
+ return it->val;
+}
+
+bool cbfs_sections_primary_cbfs_accounted_for(void)
+{
+ return seen_primary_section;
+}
+
+void cbfs_sections_cleanup(void)
+{
+ for (struct descriptor_node *cur = cbfs_sections.head, *next = NULL;
+ cur; cur = next) {
+ next = cur->next;
+ free(cur);
+ }
+ cbfs_sections.head = NULL;
+ cbfs_sections.tail = NULL;
+}