Added base version of file system infrastructure. This includes a major

overhaul of the RTEMS system call interface.  This base file system is
the "In-Memory File System" aka IMFS.

The design and implementation was done by the following people:

  + Joel Sherrill (joel@OARcorp.com)
  + Jennifer Averett (jennifer@OARcorp.com)
  + Steve "Mr Mount" Salitasc (salitasc@OARcorp.com)
  + Kerwin Wade (wade@OARcorp.com)

PROBLEMS
========
  + It is VERY likely that merging this will break the UNIX port.  This
    can/will be fixed.

  + There is likely some reentrancy/mutual exclusion needed.

  + Eventually, there should be a "mini-IMFS" description table to
    eliminate links, symlinks, etc to save memory.  All you need to
    have "classic RTEMS" functionality is technically directories
    and device IO.  All the rest could be left out to save memory.

1 files changed, 6 insertions, 21 deletions

diff --git a/cpukit/libcsupport/src/__brk.c b/cpukit/libcsupport/src/__brk.c
index 4dab22c729..24efa93adb 100644
--- a/cpukit/libcsupport/src/__brk.c
+++ b/cpukit/libcsupport/src/__brk.c
@@ -1,10 +1,7 @@
-#if !defined(RTEMS_UNIX)
-
 /*
- *  RTEMS "Broken" __brk/__sbrk Implementation
- *
- *  NOTE: sbrk is BSP provided.
+ *  RTEMS "Broken" __brk Implementation
  *
+ *  NOTE: sbrk() is provided by each BSP.
  *
  *  COPYRIGHT (c) 1989-1998.
  *  On-Line Applications Research Corporation (OAR).
@@ -18,27 +15,15 @@
  */
 
 #include <rtems.h>
+#if !defined(RTEMS_UNIX)
 
-#include <signal.h>
 #include <errno.h>
-#include <sys/types.h>
-#ifdef RTEMS_NEWLIB
-#include <reent.h>
-#endif
-#include <unistd.h>
-
-/* we use RTEMS for memory management.  We don't need sbrk */
 
-void * __sbrk(int incr)
-{
-  errno = EINVAL;
-  return (void *)0;
-}
-
-int __brk( const void *endds )
+int __brk(
+  const void *endds
+)
 {
   errno = EINVAL;
   return -1;
 }
-
 #endif