commit a5c590667f150e257368cab46f26970670298e4d
author Patrick Venture <venture@google.com> Fri Nov 09 12:25:52 2018 -0800
committer Patrick Venture <venture@google.com> Thu Nov 15 12:48:51 2018 -0800
tree bda5fd08901703ad20f49f1d83a785d4ef50813e
parent b0c84d0aa69b561ac6369e605e47a1c9a675afc1

static: add temporary filename for staging update

Add the filename planned to use for stage the update.  This location was
chosen because a rename operation can happen locally within the folder,
such that it's an inode change and not a data copy.

Change-Id: I2868e8409325f0ee4bcd71f653a2e81355a5cefe
Signed-off-by: Patrick Venture <venture@google.com>

configure.ac

diff --git a/configure.ac b/configure.ac
index 52efb04..b7b972e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -81,6 +81,11 @@
     [AC_DEFINE(PCI_PHYSICAL_ADDRESS, [$PCI_PHYSICAL_ADDRESS], [Value for PCI-to-AHB bridge set.])]
 )
 
+AC_ARG_VAR(STATIC_HANDLER_STAGED_NAME, [The file to use for staging the firmware update.])
+AS_IF([test "x$STATIC_HANDLER_STAGED_NAME" == "x"], [STATIC_HANDLER_STAGED_NAME="/run/initramfs/bmc-image"])
+AC_DEFINE_UNQUOTED([STATIC_HANDLER_STAGED_NAME], ["$STATIC_HANDLER_STAGED_NAME"], [The file to use for staging the firmware update.])
+
+
 # Create configured output
 AC_CONFIG_FILES([Makefile test/Makefile])
 AC_OUTPUT

main.cpp

diff --git a/main.cpp b/main.cpp
index 7095d15..3cfc21f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -19,7 +19,7 @@
 namespace
 {
 HashFileHandler hashHandler;
-StaticLayoutHandler staticLayoutHandler;
+StaticLayoutHandler staticLayoutHandler(STATIC_HANDLER_STAGED_NAME);
 LpcDataHandler lpcDataHandler;
 PciDataHandler pciDataHandler(PCI_PHYSICAL_ADDRESS);
 

static_handler.hpp

diff --git a/static_handler.hpp b/static_handler.hpp
index 65076d7..edb3df5 100644
--- a/static_handler.hpp
+++ b/static_handler.hpp
@@ -16,7 +16,8 @@
     /**
      * Create a StaticLayoutHandler.
      */
-    StaticLayoutHandler() = default;
+    explicit StaticLayoutHandler(const std::string& temporaryName) :
+        stagedFilename(temporaryName){};
 
     bool open(const std::string& path) override;
 
@@ -25,6 +26,9 @@
 
   private:
     std::string path;
+
+    /** The file to use for staging the bytes. */
+    std::string stagedFilename;
 };
 
 } // namespace blobs