[rtems commit] Use linker set for root file system initialization

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    3d36164fe5a366cf206ed3d2e8dc5b4d9e366c14
Changeset: http://git.rtems.org/rtems/commit/?id=3d36164fe5a366cf206ed3d2e8dc5b4d9e366c14

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Mon Jan 25 21:18:41 2016 +0100

Use linker set for root file system initialization

Update #2408.

---

 cpukit/libcsupport/include/rtems/libio.h |  2 --
 cpukit/libcsupport/src/libio_init.c      |  5 -----
 cpukit/sapi/include/confdefs.h           | 11 ++++++-----
 cpukit/score/include/rtems/sysinit.h     |  1 +
 testsuites/sptests/spsysinit01/init.c    | 24 ++++++++++++++++++++++++
 5 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/cpukit/libcsupport/include/rtems/libio.h b/cpukit/libcsupport/include/rtems/libio.h
index 7a49978..28b4627 100644
--- a/cpukit/libcsupport/include/rtems/libio.h
+++ b/cpukit/libcsupport/include/rtems/libio.h
@@ -1489,8 +1489,6 @@ extern const rtems_libio_helper rtems_libio_post_driver_helper;
 
 extern const rtems_libio_helper rtems_libio_exit_helper;
 
-extern const rtems_libio_helper rtems_fs_init_helper;
-
 void rtems_libio_helper_null(void);
 
 void rtems_libio_post_driver(void);
diff --git a/cpukit/libcsupport/src/libio_init.c b/cpukit/libcsupport/src/libio_init.c
index a14fe86..88f5d8c 100644
--- a/cpukit/libcsupport/src/libio_init.c
+++ b/cpukit/libcsupport/src/libio_init.c
@@ -80,9 +80,4 @@ void rtems_libio_init( void )
   );
   if ( rc != RTEMS_SUCCESSFUL )
     rtems_fatal_error_occurred( rc );
-
-  /*
-   *  Initialize the base file system infrastructure.
-   */
-  (* rtems_fs_init_helper)();
 }
diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index 8f5906d..2c108ba 100644
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -136,11 +136,12 @@ const rtems_libio_helper rtems_libio_exit_helper =
     rtems_libio_exit;
   #endif
 
-const rtems_libio_helper rtems_fs_init_helper =
-  #ifdef CONFIGURE_APPLICATION_DISABLE_FILESYSTEM
-    rtems_libio_helper_null;
-  #else
-    rtems_filesystem_initialize;
+  #ifndef CONFIGURE_APPLICATION_DISABLE_FILESYSTEM
+    RTEMS_SYSINIT_ITEM(
+      rtems_filesystem_initialize,
+      RTEMS_SYSINIT_ROOT_FILESYSTEM,
+      RTEMS_SYSINIT_ORDER_MIDDLE
+    );
   #endif
 #endif
 #endif
diff --git a/cpukit/score/include/rtems/sysinit.h b/cpukit/score/include/rtems/sysinit.h
index 72b21e8..033ba87 100644
--- a/cpukit/score/include/rtems/sysinit.h
+++ b/cpukit/score/include/rtems/sysinit.h
@@ -57,6 +57,7 @@ extern "C" {
 #define RTEMS_SYSINIT_POSIX_KEYS                 00036b
 #define RTEMS_SYSINIT_IDLE_THREADS               000380
 #define RTEMS_SYSINIT_BSP_LIBC                   000400
+#define RTEMS_SYSINIT_ROOT_FILESYSTEM            000401
 #define RTEMS_SYSINIT_BEFORE_DRIVERS             000500
 #define RTEMS_SYSINIT_BSP_PRE_DRIVERS            000600
 #define RTEMS_SYSINIT_DEVICE_DRIVERS             000700
diff --git a/testsuites/sptests/spsysinit01/init.c b/testsuites/sptests/spsysinit01/init.c
index d72cefe..645156e 100644
--- a/testsuites/sptests/spsysinit01/init.c
+++ b/testsuites/sptests/spsysinit01/init.c
@@ -16,6 +16,8 @@
   #include "config.h"
 #endif
 
+#include <sys/stat.h>
+
 #include <assert.h>
 #include <pthread.h>
 #include <string.h>
@@ -122,6 +124,8 @@ typedef enum {
   IDLE_THREADS_POST,
   BSP_LIBC_PRE,
   BSP_LIBC_POST,
+  ROOT_FILESYSTEM_PRE,
+  ROOT_FILESYSTEM_POST,
   BEFORE_DRIVERS_PRE,
   BEFORE_DRIVERS_POST,
   BSP_PRE_DRIVERS_PRE,
@@ -554,6 +558,26 @@ LAST(RTEMS_SYSINIT_BSP_LIBC)
   next_step(BSP_LIBC_POST);
 }
 
+FIRST(RTEMS_SYSINIT_ROOT_FILESYSTEM)
+{
+  struct stat st;
+  int rv;
+
+  rv = stat("/", &st);
+  assert(rv == -1);
+  next_step(ROOT_FILESYSTEM_PRE);
+}
+
+LAST(RTEMS_SYSINIT_ROOT_FILESYSTEM)
+{
+  struct stat st;
+  int rv;
+
+  rv = stat("/", &st);
+  assert(rv == 0);
+  next_step(ROOT_FILESYSTEM_POST);
+}
+
 FIRST(RTEMS_SYSINIT_BEFORE_DRIVERS)
 {
   /* Omit test of build configuration specific pre and post conditions */