protocol: Add definition and serialisation for temporary autoboot

[petitboot] / lib / pb-protocol / pb-protocol.c

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index dbbda406fe5a022c518c656c4b44e11b692010da..8e37348c07ccd9787ee7fe0531eb2ac45b3d9649 100644 (file)
--- 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;
+}