1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (C) 2017-2023 Oracle.  All Rights Reserved.
21 /* Set us up to scrub parents. */
31 /* Look for an entry in a parent pointing to this inode. */
38 /* Look for a single entry in a directory pointing to an inode. */
52 	if (!xfs_dir2_namecheck(name->name, name->len))  in xchk_parent_actor()
53 		error = -EFSCORRUPTED;  in xchk_parent_actor()
57 	if (sc->ip->i_ino == ino)  in xchk_parent_actor()
58 		spc->nlink++;  in xchk_parent_actor()
60 	if (xchk_should_terminate(spc->sc, &error))  in xchk_parent_actor()
77 	if (!xfs_need_iread_extents(&dp->i_df))  in xchk_parent_ilock_dir()
91  * back to the inode being scrubbed.  Returns -EAGAIN if we need to revalidate
103 	struct xfs_mount	*mp = sc->mp;  in xchk_parent_validate()
110 	if (sc->ip == mp->m_rootip) {  in xchk_parent_validate()
111 		if (sc->ip->i_ino != mp->m_sb.sb_rootino ||  in xchk_parent_validate()
112 		    sc->ip->i_ino != parent_ino)  in xchk_parent_validate()
118 	if (sc->ip->i_ino == parent_ino) {  in xchk_parent_validate()
127 	expected_nlink = VFS_I(sc->ip)->i_nlink == 0 ? 0 : 1;  in xchk_parent_validate()
133 	 * If _iget returns -EINVAL or -ENOENT then the parent inode number is  in xchk_parent_validate()
135 	 * -EFSCORRUPTED or -EFSBADCRC then the parent is corrupt which is a  in xchk_parent_validate()
139 	if (error == -EINVAL || error == -ENOENT) {  in xchk_parent_validate()
140 		error = -EFSCORRUPTED;  in xchk_parent_validate()
146 	if (dp == sc->ip || !S_ISDIR(VFS_I(dp)->i_mode)) {  in xchk_parent_validate()
155 		error = -EAGAIN;  in xchk_parent_validate()
159 	/* Look for a directory entry in the parent pointing to the child. */  in xchk_parent_validate()
183 	struct xfs_mount	*mp = sc->mp;  in xchk_parent()
188 	 * If we're a directory, check that the '..' link points up to  in xchk_parent()
191 	if (!S_ISDIR(VFS_I(sc->ip)->i_mode))  in xchk_parent()
192 		return -ENOENT;  in xchk_parent()
195 	if (!xfs_verify_dir_ino(mp, sc->ip->i_ino)) {  in xchk_parent()
204 		/* Look up '..' */  in xchk_parent()
205 		error = xchk_dir_lookup(sc, sc->ip, &xfs_name_dotdot,  in xchk_parent()
219 	} while (error == -EAGAIN);  in xchk_parent()