Add boot_option_copy routine

Add the convenience routine boot_option_copy().  Does a deep copy.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

2 files changed, 21 insertions, 0 deletions

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index d5f8b2f..0252b9a 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -38,6 +38,25 @@
  *   4-byte len, id
  */
 
+/* Deep copy a boot_option.
+*/
+struct boot_option *boot_option_copy(void* ctx, const struct boot_option *opt)
+{
+	struct boot_option *new = talloc(ctx, struct boot_option);
+
+	if (new) {
+		new->id = talloc_strdup(new, opt->id);
+		new->name = talloc_strdup(new, opt->name);
+		new->description = talloc_strdup(new, opt->description);
+		new->icon_file = talloc_strdup(new, opt->icon_file);
+		new->boot_image_file = talloc_strdup(new, opt->boot_image_file);
+		new->initrd_file = talloc_strdup(new, opt->initrd_file);
+		new->boot_args = talloc_strdup(new, opt->boot_args);
+		memset(&new->list, 0, sizeof(new->list));
+	}
+
+	return new;
+}
 
 /* Write a string into the buffer, starting at pos.
  *
diff --git a/lib/pb-protocol/pb-protocol.h b/lib/pb-protocol/pb-protocol.h
index 399c824..c8ce36b 100644
--- a/lib/pb-protocol/pb-protocol.h
+++ b/lib/pb-protocol/pb-protocol.h
@@ -41,6 +41,8 @@ struct boot_option {
 	struct list_item list;
 };
 
+struct boot_option *boot_option_copy(void* ctx, const struct boot_option *opt);
+
 int pb_protocol_device_len(struct device *dev);
 
 int pb_protocol_serialise_string(char *pos, const char *str);