Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755475Ab0KASoy (ORCPT ); Mon, 1 Nov 2010 14:44:54 -0400 Received: from mail-gw0-f46.google.com ([74.125.83.46]:45912 "EHLO mail-gw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754211Ab0KASmJ (ORCPT ); Mon, 1 Nov 2010 14:42:09 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=d8ayR7toI4+l6CKX4S7eIglhRVDcFgDAwJBIlfQJMpDcqr9AOGOkcn+I5I50X0jVKR I471NNqDq8zOmKoAYNG8qjNsDCLEEljpyC9wEh5wd9uVs53iJLKmKFyqXBwM3f5LOv4s rWaN0Lo0PZmyDigm39Ib6Xrbj6s29kIvp94Sw= From: Tracey Dent To: greg@kroah.com Cc: manningc2@actrix.gen.nz, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Tracey Dent Subject: [PATCH 18/29] Staging: yaffs2: yaffs_packedtags1: Add files Date: Mon, 1 Nov 2010 14:41:06 -0400 Message-Id: <1288636877-7964-19-git-send-email-tdent48227@gmail.com> X-Mailer: git-send-email 1.7.3.2.146.gca209 In-Reply-To: <1288636877-7964-1-git-send-email-tdent48227@gmail.com> References: <1288636877-7964-1-git-send-email-tdent48227@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3659 Lines: 117 Adding files to yaffs2 directory. Signed-off-by: Tracey Dent --- drivers/staging/yaffs2/yaffs_packedtags1.c | 50 ++++++++++++++++++++++++++++ drivers/staging/yaffs2/yaffs_packedtags1.h | 37 ++++++++++++++++++++ 2 files changed, 87 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/yaffs2/yaffs_packedtags1.c create mode 100644 drivers/staging/yaffs2/yaffs_packedtags1.h diff --git a/drivers/staging/yaffs2/yaffs_packedtags1.c b/drivers/staging/yaffs2/yaffs_packedtags1.c new file mode 100644 index 0000000..2ce873f --- /dev/null +++ b/drivers/staging/yaffs2/yaffs_packedtags1.c @@ -0,0 +1,50 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "yaffs_packedtags1.h" +#include "yportenv.h" + +void yaffs_pack_tags1(yaffs_packed_tags1 *pt, const yaffs_ext_tags *t) +{ + pt->chunk_id = t->chunk_id; + pt->serial_number = t->serial_number; + pt->n_bytes = t->n_bytes; + pt->obj_id = t->obj_id; + pt->ecc = 0; + pt->deleted = (t->is_deleted) ? 0 : 1; + pt->unused_stuff = 0; + pt->should_be_ff = 0xFFFFFFFF; + +} + +void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_packed_tags1 *pt) +{ + static const __u8 all_ff[] = + { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, +0xff }; + + if (memcmp(all_ff, pt, sizeof(yaffs_packed_tags1))) { + t->block_bad = 0; + if (pt->should_be_ff != 0xFFFFFFFF) + t->block_bad = 1; + t->chunk_used = 1; + t->obj_id = pt->obj_id; + t->chunk_id = pt->chunk_id; + t->n_bytes = pt->n_bytes; + t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; + t->is_deleted = (pt->deleted) ? 0 : 1; + t->serial_number = pt->serial_number; + } else { + memset(t, 0, sizeof(yaffs_ext_tags)); + } +} diff --git a/drivers/staging/yaffs2/yaffs_packedtags1.h b/drivers/staging/yaffs2/yaffs_packedtags1.h new file mode 100644 index 0000000..50f32e8 --- /dev/null +++ b/drivers/staging/yaffs2/yaffs_packedtags1.h @@ -0,0 +1,37 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* This is used to pack YAFFS1 tags, not YAFFS2 tags. */ + +#ifndef __YAFFS_PACKEDTAGS1_H__ +#define __YAFFS_PACKEDTAGS1_H__ + +#include "yaffs_guts.h" + +typedef struct { + unsigned chunk_id:20; + unsigned serial_number:2; + unsigned n_bytes:10; + unsigned obj_id:18; + unsigned ecc:12; + unsigned deleted:1; + unsigned unused_stuff:1; + unsigned should_be_ff; + +} yaffs_packed_tags1; + +void yaffs_pack_tags1(yaffs_packed_tags1 *pt, const yaffs_ext_tags *t); +void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_packed_tags1 *pt); +#endif -- 1.7.3.2.146.gca209 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/