discover-client: Add discover_client_boot

This change implements the client side of the server-based boot
interface. We add a funcion, discover_client_boot, which serialises a
boot message, then sends it to the server.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

2 files changed, 27 insertions, 0 deletions

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index 1d1a84b..4e0af87 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -183,6 +183,14 @@ int pb_protocol_device_len(const struct device *dev)
 	return len;
 }
 
+int pb_protocol_boot_len(const struct boot_command *boot)
+{
+	return  4 + optional_strlen(boot->option_id) +
+		4 + optional_strlen(boot->boot_image_file) +
+		4 + optional_strlen(boot->initrd_file) +
+		4 + optional_strlen(boot->boot_args);
+}
+
 int pb_protocol_serialise_device(const struct device *dev, char *buf, int buf_len)
 {
 	struct boot_option *opt;
@@ -223,6 +231,22 @@ int pb_protocol_serialise_device(const struct device *dev, char *buf, int buf_le
 	return 0;
 }
 
+int pb_protocol_serialise_boot_command(const struct boot_command *boot,
+		char *buf, int buf_len)
+{
+	char *pos = buf;
+
+	pos += pb_protocol_serialise_string(pos, boot->option_id);
+	pos += pb_protocol_serialise_string(pos, boot->boot_image_file);
+	pos += pb_protocol_serialise_string(pos, boot->initrd_file);
+	pos += pb_protocol_serialise_string(pos, boot->boot_args);
+
+	assert(pos <= buf + buf_len);
+	(void)buf_len;
+
+	return 0;
+}
+
 int pb_protocol_write_message(int fd, struct pb_protocol_message *message)
 {
 	int total_len, rc;
diff --git a/lib/pb-protocol/pb-protocol.h b/lib/pb-protocol/pb-protocol.h
index beb18cc..2ec264c 100644
--- a/lib/pb-protocol/pb-protocol.h
+++ b/lib/pb-protocol/pb-protocol.h
@@ -26,6 +26,7 @@ struct pb_protocol_message {
 void pb_protocol_dump_device(const struct device *dev, const char *text,
 	FILE *stream);
 int pb_protocol_device_len(const struct device *dev);
+int pb_protocol_boot_len(const struct boot_command *boot);
 int pb_protocol_device_cmp(const struct device *a, const struct device *b);
 
 int pb_protocol_boot_option_cmp(const struct boot_option *a,
@@ -36,6 +37,8 @@ char *pb_protocol_deserialise_string(void *ctx,
 		const struct pb_protocol_message *message);
 
 int pb_protocol_serialise_device(const struct device *dev, char *buf, int buf_len);
+int pb_protocol_serialise_boot_command(const struct boot_command *boot,
+		char *buf, int buf_len);
 
 int pb_protocol_write_message(int fd, struct pb_protocol_message *message);