/* vi: set sw=4 ts=4: */ /* * 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 "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, e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), blk_t ref_block EXT2FS_ATTR((unused)), int ref_offset EXT2FS_ATTR((unused)), void *priv_data) { struct read_bb_record *rb = (struct read_bb_record *) priv_data; if (blockcnt < 0) return 0; if ((*block_nr < fs->super->s_first_data_block) || (*block_nr >= fs->super->s_blocks_count)) return 0; /* Ignore illegal blocks */ 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; if (inode.i_blocks < 500) numblocks = (inode.i_blocks / (fs->blocksize / 512)) + 20; else numblocks = 500; retval = ext2fs_badblocks_list_create(bb_list, numblocks); if (retval) return retval; } rb.bb_list = *bb_list; rb.err = 0; retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO, 0, 0, mark_bad_block, &rb); if (retval) return retval; return rb.err; }