discover/grub2: Populate $prefix from config file location

[petitboot] / discover / grub2 / grub2.c

diff --git a/discover/grub2/grub2.c b/discover/grub2/grub2.c
index 22d42dfc432a093d776a03b4109847413a66077b..7f63c351eedb25f2e161730fa26fb5a665de219f 100644 (file)
--- a/discover/grub2/grub2.c
+++ b/discover/grub2/grub2.c
@@ -86,24 +86,36 @@ bool resolve_grub2_resource(struct device_handler *handler,
        return true;
 }
 
-static int grub2_parse(struct discover_context *dc, char *buf, int len)
+static int grub2_parse(struct discover_context *dc)
 {
+       const char * const *filename;
        struct grub2_parser *parser;
+       int len, rc;
+       char *buf;
+
+       /* Support block device boot only at present */
+       if (dc->event)
+               return -1;
+
+       for (filename = grub2_conf_files; *filename; filename++) {
+               rc = parser_request_file(dc, dc->device, *filename, &buf, &len);
+               if (rc)
+                       continue;
+
+               parser = grub2_parser_create(dc);
+               grub2_parser_parse(parser, *filename, buf, len);
+               talloc_free(buf);
+               talloc_free(parser);
+               break;
+       }
 
-       parser = grub2_parser_create(dc);
-
-       grub2_parser_parse(parser, buf, len);
-
-       talloc_free(parser);
 
-       return 1;
+       return 0;
 }
 
 static struct parser grub2_parser = {
        .name                   = "grub2",
-       .method                 = CONF_METHOD_LOCAL_FILE,
        .parse                  = grub2_parse,
-       .filenames              = grub2_conf_files,
        .resolve_resource       = resolve_grub2_resource,
 };