112 	struct ovl_fh *fh = NULL;  in ovl_get_fh()  local
124 	fh = kzalloc(res + OVL_FH_WIRE_OFFSET, GFP_KERNEL);  in ovl_get_fh()
125 	if (!fh)  in ovl_get_fh()
128 	res = ovl_do_getxattr(ofs, dentry, ox, fh->buf, res);  in ovl_get_fh()
132 	err = ovl_check_fb_len(&fh->fb, res);  in ovl_get_fh()
139 	return fh;  in ovl_get_fh()
142 	kfree(fh);  in ovl_get_fh()
149 	pr_warn_ratelimited("invalid origin (%*phN)\n", res, fh);  in ovl_get_fh()
153 struct dentry *ovl_decode_real_fh(struct ovl_fh *fh, struct vfsmount *mnt,  in ovl_decode_real_fh()  argument
163 	if (!uuid_equal(&fh->fb.uuid, &mnt->mnt_sb->s_uuid))  in ovl_decode_real_fh()
166 	bytes = (fh->fb.len - offsetof(struct ovl_fb, fid));  in ovl_decode_real_fh()
167 	real = exportfs_decode_fh(mnt, (struct fid *)fh->fb.fid,  in ovl_decode_real_fh()
168 				  bytes >> 2, (int)fh->fb.type,  in ovl_decode_real_fh()
178 		    !(fh->fb.flags & OVL_FH_FLAG_PATH_UPPER))  in ovl_decode_real_fh()
342 int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh, bool connected,  in ovl_check_origin_fh()  argument
357 		origin = ovl_decode_real_fh(fh, ofs->layers[i].mnt,  in ovl_check_origin_fh()
396 	struct ovl_fh *fh = ovl_get_fh(ofs, upperdentry, OVL_XATTR_ORIGIN);  in ovl_check_origin()  local
399 	if (IS_ERR_OR_NULL(fh))  in ovl_check_origin()
400 		return PTR_ERR(fh);  in ovl_check_origin()
402 	err = ovl_check_origin_fh(ofs, fh, false, upperdentry, stackp);  in ovl_check_origin()
403 	kfree(fh);  in ovl_check_origin()
419 			 enum ovl_xattr ox, const struct ovl_fh *fh)  in ovl_verify_fh()  argument
430 	if (fh->fb.len != ofh->fb.len || memcmp(&fh->fb, &ofh->fb, fh->fb.len))  in ovl_verify_fh()
450 	struct ovl_fh *fh;  in ovl_verify_set_fh()  local
453 	fh = ovl_encode_real_fh(real, is_upper);  in ovl_verify_set_fh()
454 	err = PTR_ERR(fh);  in ovl_verify_set_fh()
455 	if (IS_ERR(fh)) {  in ovl_verify_set_fh()
456 		fh = NULL;  in ovl_verify_set_fh()
460 	err = ovl_verify_fh(ofs, dentry, ox, fh);  in ovl_verify_set_fh()
462 		err = ovl_do_setxattr(ofs, dentry, ox, fh->buf, fh->fb.len);  in ovl_verify_set_fh()
467 	kfree(fh);  in ovl_verify_set_fh()
481 	struct ovl_fh *fh;  in ovl_index_upper()  local
487 	fh = ovl_get_fh(ofs, index, OVL_XATTR_UPPER);  in ovl_index_upper()
488 	if (IS_ERR_OR_NULL(fh))  in ovl_index_upper()
489 		return ERR_CAST(fh);  in ovl_index_upper()
491 	upper = ovl_decode_real_fh(fh, ovl_upper_mnt(ofs), true);  in ovl_index_upper()
492 	kfree(fh);  in ovl_index_upper()
514 	struct ovl_fh *fh = NULL;  in ovl_verify_index()  local
530 	fh = kzalloc(len + OVL_FH_WIRE_OFFSET, GFP_KERNEL);  in ovl_verify_index()
531 	if (!fh)  in ovl_verify_index()
535 	if (hex2bin(fh->buf, index->d_name.name, len))  in ovl_verify_index()
538 	err = ovl_check_fb_len(&fh->fb, len);  in ovl_verify_index()
580 	err = ovl_verify_fh(ofs, upper, OVL_XATTR_ORIGIN, fh);  in ovl_verify_index()
587 		err = ovl_check_origin_fh(ofs, fh, false, index, &stack);  in ovl_verify_index()
597 	kfree(fh);  in ovl_verify_index()
613 static int ovl_get_index_name_fh(struct ovl_fh *fh, struct qstr *name)  in ovl_get_index_name_fh()  argument
617 	n = kcalloc(fh->fb.len, 2, GFP_KERNEL);  in ovl_get_index_name_fh()
621 	s  = bin2hex(n, fh->buf, fh->fb.len);  in ovl_get_index_name_fh()
645 	struct ovl_fh *fh;  in ovl_get_index_name()  local
648 	fh = ovl_encode_real_fh(origin, false);  in ovl_get_index_name()
649 	if (IS_ERR(fh))  in ovl_get_index_name()
650 		return PTR_ERR(fh);  in ovl_get_index_name()
652 	err = ovl_get_index_name_fh(fh, name);  in ovl_get_index_name()
654 	kfree(fh);  in ovl_get_index_name()
659 struct dentry *ovl_get_index_fh(struct ovl_fs *ofs, struct ovl_fh *fh)  in ovl_get_index_fh()  argument
665 	err = ovl_get_index_name_fh(fh, &name);  in ovl_get_index_fh()