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Diffstat (limited to 'e2fslib/bb_inode.c')
-rw-r--r--e2fslib/bb_inode.c287
1 files changed, 0 insertions, 287 deletions
diff --git a/e2fslib/bb_inode.c b/e2fslib/bb_inode.c
deleted file mode 100644
index 34c4955..0000000
--- a/e2fslib/bb_inode.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * bb_inode.c --- routines to update the bad block inode.
- *
- * WARNING: This routine modifies a lot of state in the filesystem; if
- * this routine returns an error, the bad block inode may be in an
- * inconsistent state.
- *
- * Copyright (C) 1994, 1995 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 set_badblock_record {
- ext2_badblocks_iterate bb_iter;
- int bad_block_count;
- blk_t *ind_blocks;
- int max_ind_blocks;
- int ind_blocks_size;
- int ind_blocks_ptr;
- char *block_buf;
- errcode_t err;
-};
-
-static int set_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block, int ref_offset,
- void *priv_data);
-static int clear_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block, int ref_offset,
- void *priv_data);
-
-/*
- * Given a bad blocks bitmap, update the bad blocks inode to reflect
- * the map.
- */
-errcode_t ext2fs_update_bb_inode(ext2_filsys fs, ext2_badblocks_list bb_list)
-{
- errcode_t retval;
- struct set_badblock_record rec;
- struct ext2_inode inode;
- blk_t blk;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- if (!fs->block_map)
- return EXT2_ET_NO_BLOCK_BITMAP;
-
- rec.bad_block_count = 0;
- rec.ind_blocks_size = rec.ind_blocks_ptr = 0;
- rec.max_ind_blocks = 10;
- retval = ext2fs_get_mem(rec.max_ind_blocks * sizeof(blk_t),
- (void **) &rec.ind_blocks);
- if (retval)
- return retval;
- memset(rec.ind_blocks, 0, rec.max_ind_blocks * sizeof(blk_t));
- retval = ext2fs_get_mem(fs->blocksize, (void **) &rec.block_buf);
- if (retval)
- goto cleanup;
- memset(rec.block_buf, 0, fs->blocksize);
- rec.err = 0;
-
- /*
- * First clear the old bad blocks (while saving the indirect blocks)
- */
- retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO,
- BLOCK_FLAG_DEPTH_TRAVERSE, 0,
- clear_bad_block_proc, &rec);
- if (retval)
- goto cleanup;
- if (rec.err) {
- retval = rec.err;
- goto cleanup;
- }
-
- /*
- * Now set the bad blocks!
- *
- * First, mark the bad blocks as used. This prevents a bad
- * block from being used as an indirecto block for the bad
- * block inode (!).
- */
- if (bb_list) {
- retval = ext2fs_badblocks_list_iterate_begin(bb_list,
- &rec.bb_iter);
- if (retval)
- goto cleanup;
- while (ext2fs_badblocks_list_iterate(rec.bb_iter, &blk)) {
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- }
- ext2fs_badblocks_list_iterate_end(rec.bb_iter);
- ext2fs_mark_bb_dirty(fs);
-
- retval = ext2fs_badblocks_list_iterate_begin(bb_list,
- &rec.bb_iter);
- if (retval)
- goto cleanup;
- retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO,
- BLOCK_FLAG_APPEND, 0,
- set_bad_block_proc, &rec);
- ext2fs_badblocks_list_iterate_end(rec.bb_iter);
- if (retval)
- goto cleanup;
- if (rec.err) {
- retval = rec.err;
- goto cleanup;
- }
- }
-
- /*
- * Update the bad block inode's mod time and block count
- * field.
- */
- retval = ext2fs_read_inode(fs, EXT2_BAD_INO, &inode);
- if (retval)
- goto cleanup;
-
- inode.i_atime = inode.i_mtime = time(0);
- if (!inode.i_ctime)
- inode.i_ctime = time(0);
- inode.i_blocks = rec.bad_block_count * (fs->blocksize / 512);
- inode.i_size = rec.bad_block_count * fs->blocksize;
-
- retval = ext2fs_write_inode(fs, EXT2_BAD_INO, &inode);
- if (retval)
- goto cleanup;
-
-cleanup:
- ext2fs_free_mem((void **) &rec.ind_blocks);
- ext2fs_free_mem((void **) &rec.block_buf);
- return retval;
-}
-
-/*
- * Helper function for update_bb_inode()
- *
- * Clear the bad blocks in the bad block inode, while saving the
- * indirect blocks.
- */
-#ifdef __TURBOC__
- #pragma argsused
-#endif
-static int clear_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt,
- blk_t ref_block, int ref_offset,
- void *priv_data)
-{
- struct set_badblock_record *rec = (struct set_badblock_record *)
- priv_data;
- errcode_t retval;
- int group;
- unsigned long old_size;
-
- if (!*block_nr)
- return 0;
-
- /*
- * If the block number is outrageous, clear it and ignore it.
- */
- if (*block_nr >= fs->super->s_blocks_count ||
- *block_nr < fs->super->s_first_data_block) {
- *block_nr = 0;
- return BLOCK_CHANGED;
- }
-
- if (blockcnt < 0) {
- if (rec->ind_blocks_size >= rec->max_ind_blocks) {
- old_size = rec->max_ind_blocks * sizeof(blk_t);
- rec->max_ind_blocks += 10;
- retval = ext2fs_resize_mem(old_size,
- rec->max_ind_blocks * sizeof(blk_t),
- (void **) &rec->ind_blocks);
- if (retval) {
- rec->max_ind_blocks -= 10;
- rec->err = retval;
- return BLOCK_ABORT;
- }
- }
- rec->ind_blocks[rec->ind_blocks_size++] = *block_nr;
- }
-
- /*
- * Mark the block as unused, and update accounting information
- */
- ext2fs_unmark_block_bitmap(fs->block_map, *block_nr);
- ext2fs_mark_bb_dirty(fs);
- group = ext2fs_group_of_blk(fs, *block_nr);
- fs->group_desc[group].bg_free_blocks_count++;
- fs->super->s_free_blocks_count++;
- ext2fs_mark_super_dirty(fs);
-
- *block_nr = 0;
- return BLOCK_CHANGED;
-}
-
-
-/*
- * Helper function for update_bb_inode()
- *
- * Set the block list in the bad block inode, using the supplied bitmap.
- */
-#ifdef __TURBOC__
- #pragma argsused
-#endif
-static int set_bad_block_proc(ext2_filsys fs, blk_t *block_nr,
- e2_blkcnt_t blockcnt, blk_t ref_block,
- int ref_offset, void *priv_data)
-{
- struct set_badblock_record *rec = (struct set_badblock_record *)
- priv_data;
- errcode_t retval;
- blk_t blk;
- int group;
-
- if (blockcnt >= 0) {
- /*
- * Get the next bad block.
- */
- if (!ext2fs_badblocks_list_iterate(rec->bb_iter, &blk))
- return BLOCK_ABORT;
- rec->bad_block_count++;
- } else {
- /*
- * An indirect block; fetch a block from the
- * previously used indirect block list. The block
- * most be not marked as used; if so, get another one.
- * If we run out of reserved indirect blocks, allocate
- * a new one.
- */
- retry:
- if (rec->ind_blocks_ptr < rec->ind_blocks_size) {
- blk = rec->ind_blocks[rec->ind_blocks_ptr++];
- if (ext2fs_test_block_bitmap(fs->block_map, blk))
- goto retry;
- } else {
- retval = ext2fs_new_block(fs, 0, 0, &blk);
- if (retval) {
- rec->err = retval;
- return BLOCK_ABORT;
- }
- }
- retval = io_channel_write_blk(fs->io, blk, 1, rec->block_buf);
- if (retval) {
- rec->err = retval;
- return BLOCK_ABORT;
- }
- ext2fs_mark_block_bitmap(fs->block_map, blk);
- ext2fs_mark_bb_dirty(fs);
- }
-
- /*
- * Update block counts
- */
- group = ext2fs_group_of_blk(fs, blk);
- fs->group_desc[group].bg_free_blocks_count--;
- fs->super->s_free_blocks_count--;
- ext2fs_mark_super_dirty(fs);
-
- *block_nr = blk;
- return BLOCK_CHANGED;
-}
-
-
-
-
-
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 16:37:48 +0000