static errcode_t fix_dirent_filetype(o2fsck_state *ost,
o2fsck_dirblock_entry *dbe,
struct ocfs2_dir_entry *dirent,
int offset,
unsigned int *flags)
{
uint8_t expected_type;
errcode_t ret;
int was_set;
ret = ocfs2_bitmap_test(ost->ost_dir_inodes, dirent->inode, &was_set);
if (ret)
goto out;
if (was_set) {
expected_type = OCFS2_FT_DIR;
goto check;
}
ret = ocfs2_bitmap_test(ost->ost_reg_inodes, dirent->inode, &was_set);
if (ret)
goto out;
if (was_set) {
expected_type = OCFS2_FT_REG_FILE;
goto check;
}
ret = o2fsck_type_from_dinode(ost, dirent->inode, &expected_type);
if (ret)
goto out;
check:
if ((dirent->file_type != expected_type) &&
prompt(ost, PY, PR_DIRENT_TYPE,
"Directory entry %.*s contains file type %s (%u) "
"but its inode %"PRIu64" leads to type %s (%u). Reset the "
"entry's type to match the inode's?",
dirent->name_len, dirent->name,
file_type_string(dirent->file_type), dirent->file_type,
(uint64_t)dirent->inode,
file_type_string(expected_type), expected_type)) {
dirent->file_type = expected_type;
*flags |= OCFS2_DIRENT_CHANGED;
}
out:
if (ret)
com_err(whoami, ret, "while trying to verify the file type "
"of directory entry %.*s", dirent->name_len,
dirent->name);
return ret;
}
static void fix_dot_dot(o2fsck_state *ost, o2fsck_dir_parent *dir)
{
errcode_t ret;
struct fix_dot_dot_args args = {
.ost = ost,
.parent = dir->dp_dirent,
.fixed = 0,
};
ret = ocfs2_dir_iterate(ost->ost_fs, dir->dp_ino,
OCFS2_DIRENT_FLAG_INCLUDE_EMPTY, NULL,
fix_dot_dot_dirent, &args);
if (ret) {
com_err("fix_dot_dot", ret, "while iterating through dir "
"inode %"PRIu64"'s directory entries.", dir->dp_dirent);
/* XXX mark fs invalid */
return;
}
if (!args.fixed) {
fprintf(stderr, "Didn't find a '..' entry to fix.\n");
/* XXX mark fs invalid */
return;
}
dir->dp_dot_dot = dir->dp_dirent;
}
/* add a directory entry that points to a given inode in lost+found. */
void o2fsck_reconnect_file(o2fsck_state *ost, uint64_t inode)
{
static char iname[NAME_MAX + 1];
char name[] = "lost+found";
int namelen = sizeof(name) - 1;
o2fsck_dir_parent *dp;
errcode_t ret;
uint8_t type;
int len;
if (ost->ost_lostfound_ino == 0) {
ret = ocfs2_lookup(ost->ost_fs, ost->ost_fs->fs_root_blkno,
name, namelen, NULL,
&ost->ost_lostfound_ino);
if (ret) {
com_err(whoami, ret, "while trying to find the "
"/lost+found directory so that inode "
"%"PRIu64" could be moved there.", inode);
goto out;
}
}
len = snprintf(iname, sizeof(iname), "#%"PRIu64, inode);
if (len <= 0) {
ret = OCFS2_ET_NO_MEMORY;
com_err(whoami, ret, "while trying to build a new file name "
"for inode %"PRIu64" to use in /lost+found", inode);
goto out;
}
ret = o2fsck_type_from_dinode(ost, inode, &type);
if (ret)
goto out;
ret = ocfs2_link(ost->ost_fs, ost->ost_lostfound_ino, iname, inode,
type);
if (ret) {
com_err(whoami, ret, "while trying to link inode %"PRIu64" "
"into /lost+found", inode);
goto out;
}
/* add another ref to account for this new dirent */
o2fsck_icount_delta(ost->ost_icount_refs, inode, 1);
/* if we just added a directory to l+f we need to track that
* the new dirent points to the dir. we leave the dot_dot tracking
* intact because we didn't change that in the dirblock.. */
if (type == OCFS2_FT_DIR) {
dp = o2fsck_dir_parent_lookup(&ost->ost_dir_parents, inode);
if (dp == NULL) {
ret = OCFS2_ET_INTERNAL_FAILURE;
com_err(whoami, ret, "while looking up the directory "
"parent structure for inode %"PRIu64, inode);
goto out;
}
dp->dp_dirent = ost->ost_lostfound_ino;
}
out:
return;
}
static uint64_t loop_no = 0;
static errcode_t connect_directory(o2fsck_state *ost,
o2fsck_dir_parent *dir)
{
o2fsck_dir_parent *dp = dir, *par;
errcode_t ret = 0;
int fix;
verbosef("checking dir inode %"PRIu64" parent %"PRIu64" dot_dot "
"%"PRIu64"\n", dir->dp_ino, dp->dp_dirent, dp->dp_dot_dot);
loop_no++;
while(!dp->dp_connected) {
/* we either will ascend to a parent that is connected or
* we'll graft the subtree with this directory on to lost
* and found. */
dp->dp_connected = 1;
/* move on to the parent dir only if it exists and we haven't
* already traversed it in this instance of parent walking */
if (dp->dp_dirent) {
par = o2fsck_dir_parent_lookup(&ost->ost_dir_parents,
dp->dp_dirent);
if (par == NULL) {
ret = OCFS2_ET_INTERNAL_FAILURE;
com_err(whoami, ret, "no dir info for parent "
"%"PRIu64, dp->dp_dirent);
goto out;
}
if (par->dp_loop_no != loop_no) {
par->dp_loop_no = loop_no;
dp = par;
continue;
}
}
/* ok, we hit an orphan subtree with no parent or are at
* the dir in a subtree that is the first to try to reference
* a dir in its children */
fix = prompt(ost, PY, PR_DIR_NOT_CONNECTED,
"Directory inode %"PRIu64" isn't "
"connected to the filesystem. Move it to "
"lost+found?", dp->dp_ino);
if (fix)
o2fsck_reconnect_file(ost, dp->dp_ino);
break;
}
/*
* orphan dirs are a magically awesome special case. they have
* their i_link_count increased when subdirs are added but
* the subdirs '..' entry isn't updated to point to the orphan
* dir. we alter our book-keeping to it look like the '..'
* was reasonable on disk.
*/
if (dir->dp_in_orphan_dir) {
/* previous '..' entry is garbage */
if (dir->dp_dot_dot)
o2fsck_icount_delta(ost->ost_icount_refs,
dir->dp_dot_dot, -1);
/* pretend '..' pointed to the orphan dir */
dir->dp_dot_dot = dir->dp_dirent;
o2fsck_icount_delta(ost->ost_icount_refs, dir->dp_dot_dot, 1);
}
if (dir->dp_dirent != dir->dp_dot_dot) {
fix = prompt(ost, PY, PR_DIR_DOTDOT,
"Directory inode %"PRIu64" is "
"referenced by a dirent in directory %"PRIu64" "
"but its '..' entry points to inode %"PRIu64". "
"Fix the '..' entry to reference %"PRIu64"?",
dir->dp_ino, dir->dp_dirent, dir->dp_dot_dot,
dir->dp_dirent);
if (fix)
fix_dot_dot(ost, dir);
}
out:
return ret;
}
