static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
struct ext2_dx_root_info * rootnode,
blk_t blk, char *buf, int level)
{
char *cbuf;
errcode_t errcode;
blk_t pblk;
cbuf = malloc(fs->blocksize);
if (!cbuf) {
fprintf(pager, "Couldn't allocate child block.\n");
return;
}
errcode = ext2fs_bmap(fs, ino, inode, buf, 0, blk, &pblk);
if (errcode) {
com_err("htree_dump_int_block", errcode,
"while mapping logical block %u\n", blk);
goto errout;
}
errcode = io_channel_read_blk(current_fs->io, pblk, 1, buf);
if (errcode) {
com_err("htree_dump_int_block", errcode,
"while reading block %u\n", blk);
goto errout;
}
htree_dump_int_node(fs, ino, inode, rootnode,
(struct ext2_dx_entry *) (buf+8),
cbuf, level);
errout:
free(cbuf);
}
void do_htree_dump(int argc, char *argv[])
{
ext2_ino_t ino;
struct ext2_inode inode;
int c;
int long_opt = 0;
blk_t blk;
char *buf = NULL;
struct ext2_dx_root_info *rootnode;
struct ext2_dx_entry *ent;
struct ext2_dx_countlimit *limit;
errcode_t errcode;
if (check_fs_open(argv[0]))
return;
pager = open_pager();
reset_getopt();
while ((c = getopt (argc, argv, "l")) != EOF) {
switch (c) {
case 'l':
long_opt++;
break;
default:
goto print_usage;
}
}
if (argc > optind+1) {
print_usage:
com_err(0, 0, "Usage: htree_dump [-l] file");
goto errout;
}
if (argc == optind)
ino = cwd;
else
ino = string_to_inode(argv[optind]);
if (!ino)
goto errout;
if (debugfs_read_inode(ino, &inode, argv[1]))
goto errout;
if (!LINUX_S_ISDIR(inode.i_mode)) {
com_err(argv[0], 0, "Not a directory");
goto errout;
}
if ((inode.i_flags & EXT2_BTREE_FL) == 0) {
com_err(argv[0], 0, "Not a hash-indexed directory");
goto errout;
}
buf = malloc(2*current_fs->blocksize);
if (!buf) {
com_err(argv[0], 0, "Couldn't allocate htree buffer");
goto errout;
}
errcode = ext2fs_bmap(current_fs, ino, &inode, buf, 0, 0, &blk);
if (errcode) {
com_err("do_htree_block", errcode,
"while mapping logical block 0\n");
goto errout;
}
errcode = io_channel_read_blk(current_fs->io, blk,
1, buf);
if (errcode) {
com_err(argv[0], errcode, "Error reading root node");
goto errout;
}
rootnode = (struct ext2_dx_root_info *) (buf + 24);
fprintf(pager, "Root node dump:\n");
fprintf(pager, "\t Reserved zero: %u\n", rootnode->reserved_zero);
fprintf(pager, "\t Hash Version: %d\n", rootnode->hash_version);
fprintf(pager, "\t Info length: %d\n", rootnode->info_length);
fprintf(pager, "\t Indirect levels: %d\n", rootnode->indirect_levels);
fprintf(pager, "\t Flags: %d\n", rootnode->unused_flags);
ent = (struct ext2_dx_entry *) (buf + 24 + rootnode->info_length);
limit = (struct ext2_dx_countlimit *) ent;
htree_dump_int_node(current_fs, ino, &inode, rootnode, ent,
buf + current_fs->blocksize,
rootnode->indirect_levels);
errout:
free(buf);
close_pager(pager);
}
void do_htree_dump(int argc, char *argv[])
{
ext2_ino_t ino;
struct ext2_inode inode;
blk64_t blk;
char *buf = NULL;
struct ext2_dx_root_info *rootnode;
struct ext2_dx_entry *ent;
errcode_t errcode;
if (check_fs_open(argv[0]))
return;
pager = open_pager();
if (common_inode_args_process(argc, argv, &ino, 0))
goto errout;
if (debugfs_read_inode(ino, &inode, argv[1]))
goto errout;
if (!LINUX_S_ISDIR(inode.i_mode)) {
com_err(argv[0], 0, "Not a directory");
goto errout;
}
if ((inode.i_flags & EXT2_BTREE_FL) == 0) {
com_err(argv[0], 0, "Not a hash-indexed directory");
goto errout;
}
buf = malloc(2*current_fs->blocksize);
if (!buf) {
com_err(argv[0], 0, "Couldn't allocate htree buffer");
goto errout;
}
errcode = ext2fs_bmap2(current_fs, ino, &inode, buf, 0, 0, 0, &blk);
if (errcode) {
com_err("do_htree_block", errcode,
"while mapping logical block 0\n");
goto errout;
}
errcode = io_channel_read_blk64(current_fs->io, blk,
1, buf);
if (errcode) {
com_err(argv[0], errcode, "Error reading root node");
goto errout;
}
rootnode = (struct ext2_dx_root_info *) (buf + 24);
fprintf(pager, "Root node dump:\n");
fprintf(pager, "\t Reserved zero: %u\n", rootnode->reserved_zero);
fprintf(pager, "\t Hash Version: %d\n", rootnode->hash_version);
fprintf(pager, "\t Info length: %d\n", rootnode->info_length);
fprintf(pager, "\t Indirect levels: %d\n", rootnode->indirect_levels);
fprintf(pager, "\t Flags: %d\n", rootnode->unused_flags);
ent = (struct ext2_dx_entry *) (buf + 24 + rootnode->info_length);
htree_dump_int_node(current_fs, ino, &inode, rootnode, ent,
buf + current_fs->blocksize,
rootnode->indirect_levels);
errout:
free(buf);
close_pager(pager);
}