| /* |
| * read_bb --- read the bad blocks inode |
| * |
| * Copyright (C) 1994 Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Public |
| * License. |
| * %End-Header% |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #if HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <fcntl.h> |
| #include <time.h> |
| #if HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif |
| #if HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| |
| #include <linux/ext2_fs.h> |
| |
| #include "ext2fs.h" |
| |
| struct read_bb_record { |
| ext2_badblocks_list bb_list; |
| errcode_t err; |
| }; |
| |
| /* |
| * Helper function for ext2fs_read_bb_inode() |
| */ |
| #ifdef __TURBOC__ |
| #pragma argsused |
| #endif |
| static int mark_bad_block(ext2_filsys fs, blk_t *block_nr, |
| int blockcnt, void *private) |
| { |
| struct read_bb_record *rb = (struct read_bb_record *) private; |
| |
| if (blockcnt < 0) |
| return 0; |
| |
| rb->err = ext2fs_badblocks_list_add(rb->bb_list, *block_nr); |
| if (rb->err) |
| return BLOCK_ABORT; |
| return 0; |
| } |
| |
| /* |
| * Reads the current bad blocks from the bad blocks inode. |
| */ |
| errcode_t ext2fs_read_bb_inode(ext2_filsys fs, ext2_badblocks_list *bb_list) |
| { |
| errcode_t retval; |
| struct read_bb_record rb; |
| struct ext2_inode inode; |
| blk_t numblocks; |
| |
| EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS); |
| |
| if (!*bb_list) { |
| retval = ext2fs_read_inode(fs, EXT2_BAD_INO, &inode); |
| if (retval) |
| return retval; |
| numblocks = (inode.i_blocks / (fs->blocksize / 512)) + 20; |
| retval = ext2fs_badblocks_list_create(bb_list, numblocks); |
| if (retval) |
| return retval; |
| } |
| |
| rb.bb_list = *bb_list; |
| rb.err = 0; |
| retval = ext2fs_block_iterate(fs, EXT2_BAD_INO, 0, 0, |
| mark_bad_block, &rb); |
| if (retval) |
| return retval; |
| |
| return rb.err; |
| } |
| |
| |