protocol: Add definition and serialisation for temporary autoboot

Add a new message format for a temporarily-applied autoboot setting.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>

2 files changed, 76 insertions, 0 deletions

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index dbbda40..8e37348 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -363,6 +363,21 @@ int pb_protocol_plugin_option_len(const struct plugin_option *opt)
 	return len;
 }
 
+int pb_protocol_temp_autoboot_len(const struct autoboot_option *opt)
+{
+	unsigned int len = 0;
+
+	/* boot_type */
+	len += 4;
+
+	if (opt->boot_type == BOOT_DEVICE_TYPE)
+		len += 4;
+	else
+		len += optional_strlen(opt->uuid);
+
+	return len;
+}
+
 int pb_protocol_serialise_device(const struct device *dev,
 		char *buf, int buf_len)
 {
@@ -663,6 +678,26 @@ int pb_protocol_serialise_plugin_option(const struct plugin_option *opt,
 	return 0;
 }
 
+int pb_protocol_serialise_temp_autoboot(const struct autoboot_option *opt,
+		char *buf, int buf_len)
+{
+	char *pos = buf;
+
+	*(uint32_t *)pos = __cpu_to_be32(opt->boot_type);
+	pos += 4;
+
+	if (opt->boot_type == BOOT_DEVICE_TYPE) {
+		*(uint32_t *)pos = __cpu_to_be32(opt->type);
+		pos += 4;
+	} else {
+		pos += pb_protocol_serialise_string(pos, opt->uuid);
+	}
+
+	(void)buf_len;
+
+	return 0;
+}
+
 int pb_protocol_write_message(int fd, struct pb_protocol_message *message)
 {
 	int total_len, rc;
@@ -1265,3 +1300,38 @@ int pb_protocol_deserialise_plugin_option(struct plugin_option *opt,
 out:
 	return rc;
 }
+
+int pb_protocol_deserialise_temp_autoboot(struct autoboot_option *opt,
+		const struct pb_protocol_message *message)
+{
+	unsigned int len, tmp;
+	const char *pos;
+	int rc = -1;
+	char *str;
+
+	len = message->payload_len;
+	pos = message->payload;
+
+	if (read_u32(&pos, &len, &tmp))
+		goto out;
+
+	opt->boot_type = tmp;
+	if (opt->boot_type == BOOT_DEVICE_TYPE) {
+		if (read_u32(&pos, &len, &tmp))
+			goto out;
+		opt->type = tmp;
+
+	} else if (opt->boot_type == BOOT_DEVICE_UUID) {
+		if (read_string(opt, &pos, &len, &str))
+			goto out;
+		opt->uuid = str;
+
+	} else {
+		return -1;
+	}
+
+	rc = 0;
+
+out:
+	return rc;
+}
diff --git a/lib/pb-protocol/pb-protocol.h b/lib/pb-protocol/pb-protocol.h
index 250c2d1..14fd8a2 100644
--- a/lib/pb-protocol/pb-protocol.h
+++ b/lib/pb-protocol/pb-protocol.h
@@ -26,6 +26,7 @@ enum pb_protocol_action {
 	PB_PROTOCOL_ACTION_PLUGIN_OPTION_ADD	= 0xc,
 	PB_PROTOCOL_ACTION_PLUGINS_REMOVE	= 0xd,
 	PB_PROTOCOL_ACTION_PLUGIN_INSTALL	= 0xe,
+	PB_PROTOCOL_ACTION_TEMP_AUTOBOOT	= 0xf,
 };
 
 struct pb_protocol_message {
@@ -44,6 +45,7 @@ int pb_protocol_system_info_len(const struct system_info *sysinfo);
 int pb_protocol_config_len(const struct config *config);
 int pb_protocol_url_len(const char *url);
 int pb_protocol_plugin_option_len(const struct plugin_option *opt);
+int pb_protocol_temp_autoboot_len(const struct autoboot_option *opt);
 int pb_protocol_device_cmp(const struct device *a, const struct device *b);
 
 int pb_protocol_boot_option_cmp(const struct boot_option *a,
@@ -68,6 +70,8 @@ int pb_protocol_serialise_config(const struct config *config,
 int pb_protocol_serialise_url(const char *url, char *buf, int buf_len);
 int pb_protocol_serialise_plugin_option(const struct plugin_option *opt,
 		char *buf, int buf_len);
+int pb_protocol_serialise_temp_autoboot(const struct autoboot_option *opt,
+		char *buf, int buf_len);
 
 int pb_protocol_write_message(int fd, struct pb_protocol_message *message);
 
@@ -96,4 +100,6 @@ int pb_protocol_deserialise_config(struct config *config,
 
 int pb_protocol_deserialise_plugin_option(struct plugin_option *opt,
 		const struct pb_protocol_message *message);
+int pb_protocol_deserialise_temp_autoboot(struct autoboot_option *opt,
+		const struct pb_protocol_message *message);
 #endif /* _PB_PROTOCOL_H */