VFS provide assess to read-only data modules

Change-Id: I0178e5b9154f43e092af217931f4570941393d62
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/357
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Tested-by: Jenkins Server

2 files changed, 12 insertions, 0 deletions

diff --git a/src/include/usr/vfs/vfs.H b/src/include/usr/vfs/vfs.H
index 9b921c317..c916eb8ce 100644
--- a/src/include/usr/vfs/vfs.H
+++ b/src/include/usr/vfs/vfs.H
@@ -25,6 +25,7 @@
 
 #include <errl/errlentry.H>
 #include <sys/vfs.h>
+#include <sys/sync.h>
 #include <vector>
 
 namespace VFS
@@ -72,6 +73,16 @@ namespace VFS
      */
     bool module_exists(const char * i_name);
 
+    /**
+     * Get the start memory address of a data module
+     * @param[in] module name
+     * @param[out] o_address  memory address
+     * @param[out] o_size module size
+     * @retun error log on error
+     * @pre load_module() must have been called
+     */
+    errlHndl_t module_address(const char * i_name, const char *& o_address, size_t & o_size);
+
 };
 
 #endif
diff --git a/src/include/usr/vfs/vfs_reasoncodes.H b/src/include/usr/vfs/vfs_reasoncodes.H
index 3054980cd..ea4410de7 100644
--- a/src/include/usr/vfs/vfs_reasoncodes.H
+++ b/src/include/usr/vfs/vfs_reasoncodes.H
@@ -40,6 +40,7 @@ namespace VFS
         VFS_ALLOC_VMEM_FAILED =     VFS_COMP_ID | 0x03,
         VFS_PERMS_VMEM_FAILED =     VFS_COMP_ID | 0x04,
         VFS_MODULE_DOES_NOT_EXIST = VFS_COMP_ID | 0x05,
+        VFS_INVALID_DATA_MODULE   = VFS_COMP_ID | 0x06,
     };
 };