From a1596438a68921d2c9b1fdec70a720d38c85ca7d Mon Sep 17 00:00:00 2001 From: Uma Shankar Date: Fri, 25 May 2012 21:21:44 +0530 Subject: ext4fs ls load support Signed-off-by: Uma Shankar Signed-off-by: Manjunatha C Achar Signed-off-by: Iqbal Shareef Signed-off-by: Hakgoo Lee --- fs/ext2/dev.c | 131 ---------------------------------------------------------- 1 file changed, 131 deletions(-) delete mode 100644 fs/ext2/dev.c (limited to 'fs/ext2/dev.c') diff --git a/fs/ext2/dev.c b/fs/ext2/dev.c deleted file mode 100644 index 874e21161e..0000000000 --- a/fs/ext2/dev.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * (C) Copyright 2004 - * esd gmbh - * Reinhard Arlt - * - * based on code of fs/reiserfs/dev.c by - * - * (C) Copyright 2003 - 2004 - * Sysgo AG, , Pavel Bartusek - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -#include -#include -#include - -static block_dev_desc_t *ext2fs_block_dev_desc; -static disk_partition_t part_info; - -int ext2fs_set_blk_dev(block_dev_desc_t *rbdd, int part) -{ - ext2fs_block_dev_desc = rbdd; - - if (part == 0) { - /* disk doesn't use partition table */ - part_info.start = 0; - part_info.size = rbdd->lba; - part_info.blksz = rbdd->blksz; - } else { - if (get_partition_info - (ext2fs_block_dev_desc, part, &part_info)) { - return 0; - } - } - return part_info.size; -} - - -int ext2fs_devread(int sector, int byte_offset, int byte_len, char *buf) -{ - ALLOC_CACHE_ALIGN_BUFFER(char, sec_buf, SECTOR_SIZE); - unsigned sectors; - - /* - * Check partition boundaries - */ - if ((sector < 0) || - ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS)) >= - part_info.size)) { - /* errnum = ERR_OUTSIDE_PART; */ - printf(" ** %s read outside partition sector %d\n", - __func__, - sector); - return 0; - } - - /* - * Get the read to the beginning of a partition. - */ - sector += byte_offset >> SECTOR_BITS; - byte_offset &= SECTOR_SIZE - 1; - - debug(" <%d, %d, %d>\n", sector, byte_offset, byte_len); - - if (ext2fs_block_dev_desc == NULL) { - printf(" ** %s Invalid Block Device Descriptor (NULL)\n", - __func__); - return 0; - } - - if (byte_offset != 0) { - /* read first part which isn't aligned with start of sector */ - if (ext2fs_block_dev_desc-> - block_read(ext2fs_block_dev_desc->dev, - part_info.start + sector, 1, - (unsigned long *) sec_buf) != 1) { - printf(" ** %s read error **\n", __func__); - return 0; - } - memcpy(buf, sec_buf + byte_offset, - min(SECTOR_SIZE - byte_offset, byte_len)); - buf += min(SECTOR_SIZE - byte_offset, byte_len); - byte_len -= min(SECTOR_SIZE - byte_offset, byte_len); - sector++; - } - - /* read sector aligned part */ - sectors = byte_len / SECTOR_SIZE; - - if (sectors > 0) { - if (ext2fs_block_dev_desc->block_read( - ext2fs_block_dev_desc->dev, - part_info.start + sector, - sectors, - (unsigned long *) buf) != sectors) { - printf(" ** %s read error - block\n", __func__); - return 0; - } - - buf += sectors * SECTOR_SIZE; - byte_len -= sectors * SECTOR_SIZE; - sector += sectors; - } - - if (byte_len != 0) { - /* read rest of data which are not in whole sector */ - if (ext2fs_block_dev_desc-> - block_read(ext2fs_block_dev_desc->dev, - part_info.start + sector, 1, - (unsigned long *) sec_buf) != 1) { - printf(" ** %s read error - last part\n", __func__); - return 0; - } - memcpy(buf, sec_buf, byte_len); - } - return 1; -} -- cgit v1.2.1