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, 16 insertions, 11 deletions

diff --git a/c/src/lib/libc/hosterr.c b/c/src/lib/libc/hosterr.c
index a55e4a7e84..6c0308df3b 100644
--- a/c/src/lib/libc/hosterr.c
+++ b/c/src/lib/libc/hosterr.c
@@ -13,31 +13,36 @@
  */
 
 #include <rtems.h>
+#if defined(RTEMS_UNIX)
 #include <errno.h>
 
-int host_errno(void);
+int host_errno( void );
 
 /*
- * copy host errno, if any to thread aware errno, if any
+ *  fix_syscall_errno
+ *
+ *  copy host errno, if any to thread aware errno, if any
  */
 
-void fix_syscall_errno(void)
+void fix_syscall_errno( void )
 {
-    errno = host_errno();
+  errno = host_errno();
 }
 
 /*
- * Get the host system errno, if any
- * When using newlib (or possibly other libc's) on top of UNIX
- * the errno returned by system calls may be unavailable due
- * to trickery of making errno thread aware.
- * This provides a kludge of getting at it.
+ *  host_errno
+ *
+ *  Get the host system errno, if any
+ *  When using newlib (or possibly other libc's) on top of UNIX
+ *  the errno returned by system calls may be unavailable due
+ *  to trickery of making errno thread aware.
+ *  This provides a kludge of getting at it.
  */
 
 #undef errno
 extern int errno;
 int host_errno(void)
 {
-    return errno;
+  return errno;
 }
-
+#endif