JFFS2: Import from eCos

Import of Linux compatibility layer and JFFS2 file system support from
eCos.

The files are imported from eCos CVS on 2013-09-16.

cvs -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos login
cvs -z3 -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos co -P ecos

The files

"ecos/packages/compat/linux/current/asm/atomic.h",
"ecos/packages/compat/linux/current/asm/bug.h",
"ecos/packages/compat/linux/current/asm/page.h",
"ecos/packages/compat/linux/current/cyg/crc/crc.h",
"ecos/packages/compat/linux/current/cyg/infra/cyg_type.h",
"ecos/packages/compat/linux/current/linux/compiler.h",
"ecos/packages/compat/linux/current/linux/completion.h",
"ecos/packages/compat/linux/current/linux/config.h",
"ecos/packages/compat/linux/current/linux/crc32.h",
"ecos/packages/compat/linux/current/linux/errno.h",
"ecos/packages/compat/linux/current/linux/fs.h",
"ecos/packages/compat/linux/current/linux/kernel.h",
"ecos/packages/compat/linux/current/linux/list.h",
"ecos/packages/compat/linux/current/linux/mtd/compatmac.h",
"ecos/packages/compat/linux/current/linux/mtd/mtd.h",
"ecos/packages/compat/linux/current/linux/pagemap.h",
"ecos/packages/compat/linux/current/linux/rbtree.h",
"ecos/packages/compat/linux/current/linux/rwsem.h",
"ecos/packages/compat/linux/current/linux/sched.h",
"ecos/packages/compat/linux/current/linux/slab.h",
"ecos/packages/compat/linux/current/linux/spinlock.h",
"ecos/packages/compat/linux/current/linux/stat.h",
"ecos/packages/compat/linux/current/linux/string.h",
"ecos/packages/compat/linux/current/linux/timer.h",
"ecos/packages/compat/linux/current/linux/types.h",
"ecos/packages/compat/linux/current/linux/version.h",
"ecos/packages/compat/linux/current/linux/vmalloc.h",
"ecos/packages/compat/linux/current/linux/wait.h",
"ecos/packages/compat/linux/current/linux/workqueue.h", and
"ecos/packages/compat/linux/current/linux/zlib.h"
"ecos/packages/compat/linux/current/linux/zutil.h"

are copied to "cpukit/libfs/src/jffs2/include".

The file "ecos/packages/services/crc/current/src/crc32.c" is copied to
"cpukit/libfs/src/jffs2/src/compat-crc32.c".

The file "ecos/packages/compat/linux/current/src/rbtree.c" is copied to
"cpukit/libfs/src/jffs2/src/compat-rbtree.c".

The file "ecos/packages/fs/jffs2/current/src/dir-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/dir-rtems.c".

The file "ecos/packages/fs/jffs2/current/src/flashio.c" is copied to
"cpukit/libfs/src/jffs2/src/flashio.c".

The file "ecos/packages/fs/jffs2/current/src/fs-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/fs-rtems.c".

The file "ecos/packages/fs/jffs2/current/src/malloc-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/malloc-rtems.c".

The file "ecos/packages/fs/jffs2/current/src/os-ecos.h" is copied to
"cpukit/libfs/src/jffs2/src/os-rtems.h".

The LICENSE file referenced in some files of this patch set is part of a
previous patch set imported from Linux.

1 files changed, 139 insertions, 0 deletions

diff --git a/cpukit/libfs/src/jffs2/include/linux/list.h b/cpukit/libfs/src/jffs2/include/linux/list.h
new file mode 100644
index 0000000000..e9ebab1cda
--- /dev/null
+++ b/cpukit/libfs/src/jffs2/include/linux/list.h
@@ -0,0 +1,139 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ *
+ * Created by Jonathan Larmour <jlarmour@redhat.com>
+ * 
+ *===========================================================================
+ * ####ECOSGPLCOPYRIGHTBEGIN####                                            
+ * -------------------------------------------                              
+ * This file is part of eCos, the Embedded Configurable Operating System.   
+ * Copyright (C) 2002, 2003 Free Software Foundation, Inc.                  
+ *
+ * eCos is free software; you can redistribute it and/or modify it under    
+ * the terms of the GNU General Public License as published by the Free     
+ * Software Foundation; either version 2 or (at your option) any later      
+ * version.                                                                 
+ *
+ * eCos is distributed in the hope that it will be useful, but WITHOUT      
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
+ * for more details.                                                        
+ *
+ * You should have received a copy of the GNU General Public License        
+ * along with eCos; if not, write to the Free Software Foundation, Inc.,    
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
+ *
+ * As a special exception, if other files instantiate templates or use      
+ * macros or inline functions from this file, or you compile this file      
+ * and link it with other works to produce a work based on this file,       
+ * this file does not by itself cause the resulting work to be covered by   
+ * the GNU General Public License. However the source code for this file    
+ * must still be made available in accordance with section (3) of the GNU   
+ * General Public License v2.                                               
+ *
+ * This exception does not invalidate any other reasons why a work based    
+ * on this file might be covered by the GNU General Public License.         
+ * -------------------------------------------                              
+ * ####ECOSGPLCOPYRIGHTEND####                                              
+ *===========================================================================
+ *
+ */
+
+#ifndef CYGONCE_FS_JFFS2_LIST_H
+#define CYGONCE_FS_JFFS2_LIST_H
+
+
+/* -----------------------------------------------------------------------*/
+
+/* Doubly linked list implementation to replace the GPL'd one used in
+   the Linux kernel. */
+
+#include <stddef.h>
+#include <cyg/infra/cyg_type.h>
+
+/* TYPES */
+
+struct list_head {
+    struct list_head *next;
+    struct list_head *prev;
+};
+
+/* MACROS */
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+        struct list_head name = LIST_HEAD_INIT(name)
+
+#define INIT_LIST_HEAD( _list_ )              \
+CYG_MACRO_START                               \
+(_list_)->next = (_list_)->prev = (_list_);   \
+CYG_MACRO_END
+
+/* FUNCTIONS */
+
+/* Insert an entry _after_ the specified entry */
+static __inline__ void
+list_add( struct list_head *newent, struct list_head *afterthisent )
+{
+    struct list_head *next = afterthisent->next;
+    newent->next = next;
+    newent->prev = afterthisent;
+    afterthisent->next = newent;
+    next->prev = newent;
+} /* list_add() */
+
+/* Insert an entry _before_ the specified entry */
+static __inline__ void
+list_add_tail( struct list_head *newent, struct list_head *beforethisent )
+{
+    struct list_head *prev = beforethisent->prev;
+    newent->prev = prev;
+    newent->next = beforethisent;
+    beforethisent->prev = newent;
+    prev->next = newent;
+} /* list_add_tail() */
+
+/* Delete the specified entry */
+static __inline__ void
+list_del( struct list_head *ent )
+{
+    ent->prev->next = ent->next;
+    ent->next->prev = ent->prev;
+} /* list_del() */
+
+/* Is this list empty? */
+static __inline__ int
+list_empty( struct list_head *list )
+{
+    return ( list->next == list );
+} /* list_empty() */
+
+/* list_entry - Assuming you have a struct of type _type_ that contains a
+   list which has the name _member_ in that struct type, then given the
+   address of that list in the struct, _list_, this returns the address
+   of the container structure */
+
+#define list_entry( _list_, _type_, _member_ ) \
+    ((_type_ *)((char *)(_list_)-(char *)(offsetof(_type_,_member_))))
+
+/* list_for_each - using _ent_, iterate through list _list_ */
+
+#define list_for_each( _ent_, _list_ )   \
+    for ( (_ent_) = (_list_)->next;      \
+    (_ent_) != (_list_);                 \
+    (_ent_) = (_ent_)->next )
+
+/*
+ * list_for_each_entry - this function can be use to iterate over all
+ * items in a list* _list_ with it's head at _head_ and link _item_
+ */
+#define list_for_each_entry(_list_, _head_, _item_)                     \
+for ((_list_) = list_entry((_head_)->next, typeof(*_list_), _item_); \
+     &((_list_)->_item_) != (_head_);                                 \
+     (_list_) = list_entry((_list_)->_item_.next, typeof(*_list_), _item_))
+
+/* -----------------------------------------------------------------------*/
+#endif /* #ifndef CYGONCE_FS_JFFS2_LIST_H */
+/* EOF list.h */