From 35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Sat, 26 Dec 2015 16:00:37 -0300 Subject: Add support for the exFAT file system, fix hangs on older intel hardware and update AUFS --- fs/exfat/exfat_bitmap.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 fs/exfat/exfat_bitmap.c (limited to 'fs/exfat/exfat_bitmap.c') diff --git a/fs/exfat/exfat_bitmap.c b/fs/exfat/exfat_bitmap.c new file mode 100644 index 000000000..b0672dd07 --- /dev/null +++ b/fs/exfat/exfat_bitmap.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program 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 + * of the License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_global.c */ +/* PURPOSE : exFAT Miscellaneous Functions */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" +#include "exfat_bitmap.h" + +/*----------------------------------------------------------------------*/ +/* Bitmap Manipulation Functions */ +/*----------------------------------------------------------------------*/ + +#define BITMAP_LOC(v) ((v) >> 3) +#define BITMAP_SHIFT(v) ((v) & 0x07) + +s32 exfat_bitmap_test(u8 *bitmap, int i) +{ + u8 data; + + data = bitmap[BITMAP_LOC(i)]; + if ((data >> BITMAP_SHIFT(i)) & 0x01) + return 1; + return 0; +} /* end of Bitmap_test */ + +void exfat_bitmap_set(u8 *bitmap, int i) +{ + bitmap[BITMAP_LOC(i)] |= (0x01 << BITMAP_SHIFT(i)); +} /* end of Bitmap_set */ + +void exfat_bitmap_clear(u8 *bitmap, int i) +{ + bitmap[BITMAP_LOC(i)] &= ~(0x01 << BITMAP_SHIFT(i)); +} /* end of Bitmap_clear */ -- cgit v1.2.3