discover/grub2: Support var=value assignments

[petitboot] / discover / grub2 / script.c

diff --git a/discover/grub2/script.c b/discover/grub2/script.c
index 5fb13aa4f0979e24451471df8db627c4802ee26b..3f5bc236a66911fb54111a8ec7d3916c68454cca 100644 (file)
--- a/discover/grub2/script.c
+++ b/discover/grub2/script.c
@@ -9,6 +9,8 @@
 
 #define to_stmt_simple(stmt) \
        container_of(stmt, struct grub2_statement_simple, st)
+#define to_stmt_block(stmt) \
+       container_of(stmt, struct grub2_statement_block, st)
 #define to_stmt_if(stmt) \
        container_of(stmt, struct grub2_statement_if, st)
 #define to_stmt_menuentry(stmt) \
@@ -233,6 +235,7 @@ int statement_simple_execute(struct grub2_script *script,
 {
        struct grub2_statement_simple *st = to_stmt_simple(statement);
        struct grub2_symtab_entry *entry;
+       char *pos;
        int rc;
 
        if (!st->argv)
@@ -243,6 +246,17 @@ int statement_simple_execute(struct grub2_script *script,
        if (!st->argv->argc)
                return 0;
 
+       /* is this a var=value assignment? */
+       pos = strchr(st->argv->argv[0], '=');
+       if (pos) {
+               char *name, *value;
+               name = st->argv->argv[0];
+               name = talloc_strndup(st, name, pos - name);
+               value = pos + 1;
+               script_env_set(script, name, value);
+               return 0;
+       }
+
        entry = script_lookup_function(script, st->argv->argv[0]);
        if (!entry) {
                fprintf(stderr, "undefined function '%s'\n", st->argv->argv[0]);
@@ -254,6 +268,13 @@ int statement_simple_execute(struct grub2_script *script,
        return rc;
 }
 
+int statement_block_execute(struct grub2_script *script,
+               struct grub2_statement *statement)
+{
+       struct grub2_statement_block *st = to_stmt_block(statement);
+       return statements_execute(script, st->statements);
+}
+
 /* returns 0 if the statement was executed, 1 otherwise */
 static int statement_conditional_execute(struct grub2_script *script,
                struct grub2_statement *statement, bool *executed)