Filesystem: Remove per file descriptor semaphore

The per file descriptor semaphore (field of rtems_libio_t) is unused in
RTEMS.  There is a considerable memory overhead due to that.  A
semaphore needs roughly 124 bytes which is huge compared to the
approximately 72 bytes for the file descriptor structure itself.  Device
drivers can create their own synchronization primitives in the open
handler on demand.

10 files changed, 8 insertions, 18 deletions

diff --git a/testsuites/sptests/spfatal14/Makefile.am b/testsuites/sptests/spfatal14/Makefile.am
index c070b3c4dd..e5d1ee1754 100644
--- a/testsuites/sptests/spfatal14/Makefile.am
+++ b/testsuites/sptests/spfatal14/Makefile.am
@@ -11,7 +11,6 @@ include $(top_srcdir)/../automake/compile.am
 include $(top_srcdir)/../automake/leaf.am
 
 AM_CPPFLAGS += -I$(top_srcdir)/../support/include
-AM_CPPFLAGS += -DSEMAPHORES_REMAINING=5
 
 LINK_OBJS = $(spfatal14_OBJECTS)
 LINK_LIBS = $(spfatal14_LDLIBS)
diff --git a/testsuites/sptests/spfatal14/testcase.h b/testsuites/sptests/spfatal14/testcase.h
index e9e95b62e0..a63541b9e4 100644
--- a/testsuites/sptests/spfatal14/testcase.h
+++ b/testsuites/sptests/spfatal14/testcase.h
@@ -17,8 +17,7 @@
 #define FATAL_ERROR_EXPECTED_IS_INTERNAL FALSE
 #define FATAL_ERROR_EXPECTED_ERROR       0x55544431
 
-#define CONFIGURE_APPLICATION_PREREQUISITE_DRIVERS \
-  CONSUME_SEMAPHORE_DRIVERS
+#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 1
 
 void force_error()
 {
diff --git a/testsuites/sptests/spfatal15/Makefile.am b/testsuites/sptests/spfatal15/Makefile.am
index ffeb24a418..485c92af6b 100644
--- a/testsuites/sptests/spfatal15/Makefile.am
+++ b/testsuites/sptests/spfatal15/Makefile.am
@@ -11,7 +11,6 @@ include $(top_srcdir)/../automake/compile.am
 include $(top_srcdir)/../automake/leaf.am
 
 AM_CPPFLAGS += -I$(top_srcdir)/../support/include
-AM_CPPFLAGS += -DSEMAPHORES_REMAINING=6
 
 LINK_OBJS = $(spfatal15_OBJECTS)
 LINK_LIBS = $(spfatal15_LDLIBS)
diff --git a/testsuites/sptests/spfatal15/testcase.h b/testsuites/sptests/spfatal15/testcase.h
index 66ca243917..7570e4e5c8 100644
--- a/testsuites/sptests/spfatal15/testcase.h
+++ b/testsuites/sptests/spfatal15/testcase.h
@@ -16,8 +16,7 @@
 #define FATAL_ERROR_EXPECTED_IS_INTERNAL FALSE
 #define FATAL_ERROR_EXPECTED_ERROR       0x55544432
 
-#define CONFIGURE_APPLICATION_PREREQUISITE_DRIVERS \
-  { consume_semaphores_initialize, NULL, NULL, NULL, NULL, NULL }
+#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 2
 
 void force_error()
 {
diff --git a/testsuites/sptests/spfatal16/testcase.h b/testsuites/sptests/spfatal16/testcase.h
index 6a228381a6..fed0d4a7ff 100644
--- a/testsuites/sptests/spfatal16/testcase.h
+++ b/testsuites/sptests/spfatal16/testcase.h
@@ -24,5 +24,7 @@
 
 void force_error()
 {
-  /* we will not run this far */
+  /* This fatal error depends on the Termios device configuration */
+  printk( "*** END OF TEST FATAL " FATAL_ERROR_TEST_NAME " ***\n" );
+  rtems_test_exit(0);
 }
diff --git a/testsuites/sptests/spfatal17/Makefile.am b/testsuites/sptests/spfatal17/Makefile.am
index 8e2557279c..745ca43f3e 100644
--- a/testsuites/sptests/spfatal17/Makefile.am
+++ b/testsuites/sptests/spfatal17/Makefile.am
@@ -11,7 +11,7 @@ include $(top_srcdir)/../automake/compile.am
 include $(top_srcdir)/../automake/leaf.am
 
 AM_CPPFLAGS += -I$(top_srcdir)/../support/include
-AM_CPPFLAGS += -DSEMAPHORES_REMAINING=4
+AM_CPPFLAGS += -DSEMAPHORES_REMAINING=3
 
 LINK_OBJS = $(spfatal17_OBJECTS)
 LINK_LIBS = $(spfatal17_LDLIBS)
diff --git a/testsuites/sptests/spfatal18/Makefile.am b/testsuites/sptests/spfatal18/Makefile.am
index a43608c5ca..31597bbf51 100644
--- a/testsuites/sptests/spfatal18/Makefile.am
+++ b/testsuites/sptests/spfatal18/Makefile.am
@@ -11,7 +11,7 @@ include $(top_srcdir)/../automake/compile.am
 include $(top_srcdir)/../automake/leaf.am
 
 AM_CPPFLAGS += -I$(top_srcdir)/../support/include
-AM_CPPFLAGS += -DSEMAPHORES_REMAINING=3
+AM_CPPFLAGS += -DSEMAPHORES_REMAINING=2
 
 LINK_OBJS = $(spfatal18_OBJECTS)
 LINK_LIBS = $(spfatal18_LDLIBS)
diff --git a/testsuites/sptests/spfatal19/Makefile.am b/testsuites/sptests/spfatal19/Makefile.am
index 8f4105c0e7..8471aae478 100644
--- a/testsuites/sptests/spfatal19/Makefile.am
+++ b/testsuites/sptests/spfatal19/Makefile.am
@@ -11,7 +11,7 @@ include $(top_srcdir)/../automake/compile.am
 include $(top_srcdir)/../automake/leaf.am
 
 AM_CPPFLAGS += -I$(top_srcdir)/../support/include
-AM_CPPFLAGS += -DSEMAPHORES_REMAINING=2
+AM_CPPFLAGS += -DSEMAPHORES_REMAINING=1
 
 LINK_OBJS = $(spfatal19_OBJECTS)
 LINK_LIBS = $(spfatal19_LDLIBS)
diff --git a/testsuites/sptests/spfatal20/testcase.h b/testsuites/sptests/spfatal20/testcase.h
index 566c4bfc36..08721a0f8d 100644
--- a/testsuites/sptests/spfatal20/testcase.h
+++ b/testsuites/sptests/spfatal20/testcase.h
@@ -9,10 +9,6 @@
  *  $Id$
  */
 
-/* generate fatal errors in termios.c 
- *    rtems_semaphore_create( rtems_build_name ('T', 'R', 'r', c),...);
- */
-
 #define FATAL_ERROR_TEST_NAME            "20"
 #define FATAL_ERROR_DESCRIPTION  \
   "rtems_termios_initialize cannot create semaphore"
diff --git a/testsuites/sptests/spfifo02/init.c b/testsuites/sptests/spfifo02/init.c
index 8526d0cde6..2725a5024a 100644
--- a/testsuites/sptests/spfifo02/init.c
+++ b/testsuites/sptests/spfifo02/init.c
@@ -145,11 +145,7 @@ rtems_task Init(
 
   puts( "Creating FIFO" );
   create_fifo();
-  
-  puts( "Opening FIFO.. expect ENFILE (semaphore @ open could not be created)" );
-  open_fifo(ENFILE, O_RDWR);
 
-  delete_semaphore();
   puts( "Opening FIFO.. expect ENOMEM (semaphore for pipe could not be created)" );
   open_fifo(ENOMEM, O_RDWR);