[RESTORED!] Allow mounting of any directory as the root directory.

Provide definitions for the macros:
* RB_ROOT_VOL_HIDDEN(v) to exclude certain items from the root.
* RB_ROOT_CONTENTS to return a string with the name of the
directory to mount in the root.

Defaults are in export/rbpaths.h

It's a bit much for those that don't need the full functionality.
Some conditional define can cut it back a lot to cut out things only
needed if alternate root mounts are required. I'm just not bothering
yet. The basic concept would be applied to all targets to keep file
code from forking too much.

Change-Id: I3b5a14c530ff4b10d97f67636237d96875eb8969
Author: Michael Sevakis

1 files changed, 4 insertions, 0 deletions

diff --git a/firmware/export/mv.h b/firmware/export/mv.h
index 3657ef6c98..08daf50b34 100644
--- a/firmware/export/mv.h
+++ b/firmware/export/mv.h
@@ -87,6 +87,10 @@
 #define VOL_MAX_LEN      (1 + VOL_DEC_MAX_LEN + 2 + 1)
 #define VOL_NUM_MAX      100
 
+#ifndef ROOT_VOLUME
+#define ROOT_VOLUME      INT_MAX
+#endif
+
 #else /* empty definitions if no multi-volume */
 #define IF_MV(x...)
 #define IF_MV_NONVOID(x...) void