/* * This function is called to deallocate a block, and is an interator * functioned called by deallocate inode via ext2fs_iterate_block(). */ static int deallocate_inode_block(ext2_filsys fs, blk_t *block_nr, e2_blkcnt_t blockcnt, blk_t ref_block, int ref_offset, void *priv_data) { e2fsck_t ctx = (e2fsck_t) priv_data; if (HOLE_BLKADDR(*block_nr)) return 0; ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr); ext2fs_unmark_block_bitmap(fs->block_map, *block_nr); return 0; }
void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse) { int group = ext2fs_group_of_blk(fs, blk); #ifndef OMIT_COM_ERR if (blk >= fs->super->s_blocks_count) { com_err("ext2fs_block_alloc_stats", 0, "Illegal block number: %lu", (unsigned long) blk); return; } #endif if (inuse > 0) ext2fs_mark_block_bitmap(fs->block_map, blk); else ext2fs_unmark_block_bitmap(fs->block_map, blk); fs->group_desc[group].bg_free_blocks_count -= inuse; fs->group_desc[group].bg_flags &= ~EXT2_BG_BLOCK_UNINIT; ext2fs_group_desc_csum_set(fs, group); fs->super->s_free_blocks_count -= inuse; ext2fs_mark_super_dirty(fs); ext2fs_mark_bb_dirty(fs); if (fs->block_alloc_stats) (fs->block_alloc_stats)(fs, (blk64_t) blk, inuse); }
/* * Helper function which writes out a directory block. */ static int write_dir_block(ext2_filsys fs, blk_t *block_nr, e2_blkcnt_t blockcnt, blk_t ref_block EXT2FS_ATTR((unused)), int ref_offset EXT2FS_ATTR((unused)), void *priv_data) { struct write_dir_struct *wd = (struct write_dir_struct *) priv_data; blk_t blk; char *dir; if (*block_nr == 0) return 0; if (blockcnt >= wd->outdir->num) { e2fsck_read_bitmaps(wd->ctx); blk = *block_nr; ext2fs_unmark_block_bitmap(wd->ctx->block_found_map, blk); ext2fs_block_alloc_stats(fs, blk, -1); *block_nr = 0; wd->cleared++; return BLOCK_CHANGED; } if (blockcnt < 0) return 0; dir = wd->outdir->buf + (blockcnt * fs->blocksize); wd->err = ext2fs_write_dir_block(fs, *block_nr, dir); if (wd->err) return BLOCK_ABORT; return 0; }
/* * This fuction deallocates an inode */ static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf) { ext2_filsys fs = ctx->fs; struct ext2_inode inode; struct problem_context pctx; ext2fs_icount_store(ctx->inode_link_info, ino, 0); e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode"); inode.i_links_count = 0; inode.i_dtime = time(0); e2fsck_write_inode(ctx, ino, &inode, "deallocate_inode"); clear_problem_context(&pctx); pctx.ino = ino; /* * Fix up the bitmaps... */ e2fsck_read_bitmaps(ctx); ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino); ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino); if (ctx->inode_bad_map) ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino); ext2fs_unmark_inode_bitmap(fs->inode_map, ino); ext2fs_mark_ib_dirty(fs); if (!ext2fs_inode_has_valid_blocks(&inode)) return; if (!LINUX_S_ISDIR(inode.i_mode) && (inode.i_size_high || inode.i_size & 0x80000000UL)) ctx->large_files--; if (inode.i_file_acl) { ext2fs_unmark_block_bitmap(ctx->block_found_map, inode.i_file_acl); ext2fs_unmark_block_bitmap(fs->block_map, inode.i_file_acl); } ext2fs_mark_bb_dirty(fs); pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf, deallocate_inode_block, ctx); if (pctx.errcode) { fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx); ctx->flags |= E2F_FLAG_ABORT; return; } }
/* * This fuction deallocates an inode */ static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf) { ext2_filsys fs = ctx->fs; struct ext2_inode inode; struct problem_context pctx; __u32 count; e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode"); e2fsck_clear_inode(ctx, ino, &inode, 0, "deallocate_inode"); clear_problem_context(&pctx); pctx.ino = ino; /* * Fix up the bitmaps... */ e2fsck_read_bitmaps(ctx); ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode)); if (inode.i_file_acl && (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) { pctx.errcode = ext2fs_adjust_ea_refcount(fs, inode.i_file_acl, block_buf, -1, &count); if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) { pctx.errcode = 0; count = 1; } if (pctx.errcode) { pctx.blk = inode.i_file_acl; fix_problem(ctx, PR_2_ADJ_EA_REFCOUNT, &pctx); ctx->flags |= E2F_FLAG_ABORT; return; } if (count == 0) { ext2fs_unmark_block_bitmap(ctx->block_found_map, inode.i_file_acl); ext2fs_block_alloc_stats(fs, inode.i_file_acl, -1); } inode.i_file_acl = 0; } if (!ext2fs_inode_has_valid_blocks(&inode)) return; if (LINUX_S_ISREG(inode.i_mode) && (inode.i_size_high || inode.i_size & 0x80000000UL)) ctx->large_files--; pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, block_buf, deallocate_inode_block, ctx); if (pctx.errcode) { fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx); ctx->flags |= E2F_FLAG_ABORT; return; } }
void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse) { int group = ext2fs_group_of_blk(fs, blk); if (inuse > 0) ext2fs_mark_block_bitmap(fs->block_map, blk); else ext2fs_unmark_block_bitmap(fs->block_map, blk); fs->group_desc[group].bg_free_blocks_count -= inuse; fs->super->s_free_blocks_count -= inuse; ext2fs_mark_super_dirty(fs); ext2fs_mark_bb_dirty(fs); }
static int deallocate_inode_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) { e2fsck_t ctx = (e2fsck_t) priv_data; if (HOLE_BLKADDR(*block_nr)) return 0; if ((*block_nr < fs->super->s_first_data_block) || (*block_nr >= fs->super->s_blocks_count)) return 0; ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr); ext2fs_block_alloc_stats(fs, *block_nr, -1); return 0; }