Reconstruct the hashsig hash tree(s) on device restart.

This can take long enough (several minutes for h=10) that we do it in a
background task, which is then converted to an RPC dispatch task.

Also add a very limited form of free(), to free the topmost allocation in
the sdram "heap". I don't want to deal with real heap management, but I do
want to be able to recover memory upon deleting a hashsig key, if it's
easy to do so.

1 files changed, 1 insertions, 0 deletions

diff --git a/task.h b/task.h
index 47d62d6..a71f2e4 100644
--- a/task.h
+++ b/task.h
@@ -51,6 +51,7 @@ typedef struct { unsigned locked; } task_mutex_t;
 typedef void (*funcp_t)(void);
 
 extern tcb_t *task_add(char *name, funcp_t func, void *cookie, void *stack, size_t stack_len);
+extern void task_mod(char *name, funcp_t func, void *cookie);
 
 extern void task_set_idle_hook(funcp_t func);