libio: Add hold/drop iop reference

Check iop reference count in close() and return -1 with errno set to
EBUSY in case the file descriptor is still in use.

Update #3132.

1 files changed, 5 insertions, 5 deletions

diff --git a/cpukit/libcsupport/src/libio.c b/cpukit/libcsupport/src/libio.c
index 0cc2b98c0b..26fa7b2f67 100644
--- a/cpukit/libcsupport/src/libio.c
+++ b/cpukit/libcsupport/src/libio.c
@@ -58,16 +58,16 @@ static const rtems_assoc_t status_flags_assoc[] = {
   { 0, 0, 0 },
 };
 
-uint32_t rtems_libio_fcntl_flags( int fcntl_flags )
+unsigned int rtems_libio_fcntl_flags( int fcntl_flags )
 {
-  uint32_t   flags = 0;
+  unsigned int   flags = 0;
   uint32_t   access_modes;
 
   /*
    * Access mode is a small integer
    */
 
-  access_modes = (uint32_t) (fcntl_flags & O_ACCMODE);
+  access_modes = (unsigned int) (fcntl_flags & O_ACCMODE);
   fcntl_flags &= ~O_ACCMODE;
   flags = rtems_assoc_local_by_remote( access_modes_assoc, access_modes );
 
@@ -75,7 +75,7 @@ uint32_t rtems_libio_fcntl_flags( int fcntl_flags )
    * Everything else is single bits
    */
 
-  flags |= rtems_assoc_local_by_remote_bitfield(
+  flags |= (unsigned int ) rtems_assoc_local_by_remote_bitfield(
     status_flags_assoc,
     (uint32_t) fcntl_flags
   );
@@ -83,7 +83,7 @@ uint32_t rtems_libio_fcntl_flags( int fcntl_flags )
   return flags;
 }
 
-int rtems_libio_to_fcntl_flags( uint32_t flags )
+int rtems_libio_to_fcntl_flags( unsigned int flags )
 {
   int fcntl_flags = 0;