fs/overlayfs/copy_up.c

50 	int err;
58 		err = PTR_ERR(real_acl);
59 		if (err == -ENODATA || err == -EOPNOTSUPP)
61 		return err;
69 	err = ovl_do_set_acl(ofs, dentry, acl_name, clone);
73 	return err;
177 	int err;
179 	err = ovl_real_fileattr_get(old, &oldfa);
180 	if (err) {
182 		if (err == -ENOTTY || err == -EINVAL)
184 		pr_warn("failed to retrieve lower fileattr (%pd2, err=%i)\n",
185 			old->dentry, err);
186 		return err;
196 		err = ovl_set_protattr(inode, new->dentry, &oldfa);
197 		if (err == -EPERM)
199 		else if (err)
200 			return err;
207 	err = ovl_real_fileattr_get(new, &newfa);
208 	if (err) {
213 		if (err == -ENOTTY || err == -EINVAL) {
217 		pr_warn("failed to retrieve upper fileattr (%pd2, err=%i)\n",
218 			new->dentry, err);
219 		return err;
379 	int err = 0;
386 		err = ovl_do_notify_change(ofs, upperdentry, &attr);
388 	if (!err) {
394 		err = ovl_do_notify_change(ofs, upperdentry, &attr);
396 	if (!err)
399 	return err;
409 	int err;
428 	err = -EIO;
454 	return ERR_PTR(err);
473 	int err;
478 	err = ovl_check_setxattr(ofs, upper, OVL_XATTR_ORIGIN, fh->buf,
482 	return err == -EPERM ? 0 : err;
490 	int err;
496 	err = ovl_setxattr(ofs, index, OVL_XATTR_UPPER, fh->buf, fh->fb.len);
499 	return err;
516 	int err;
533 	err = ovl_get_index_name_fh(fh, &name);
534 	if (err)
535 		return err;
538 	err = PTR_ERR(temp);
542 	err = ovl_set_upper_fh(ofs, upper, temp);
543 	if (err)
548 		err = PTR_ERR(index);
550 		err = ovl_do_rename(ofs, dir, temp, dir, index, 0);
554 	if (err)
559 	return err;
581 	int err;
590 	err = ovl_set_impure(c->parent, upperdir);
591 	if (err)
594 	err = ovl_set_nlink_lower(c->dentry);
595 	if (err)
601 	err = PTR_ERR(upper);
603 		err = ovl_do_link(ofs, ovl_dentry_upper(c->dentry), udir, upper);
606 		if (!err) {
614 	if (err)
617 	err = ovl_set_nlink_upper(c->dentry);
621 	return err;
628 	int err;
637 	err = ovl_copy_up_file(ofs, c->dentry, new_file, c->stat.size);
640 	return err;
648 	int err;
650 	err = ovl_copy_xattr(c->dentry->d_sb, &c->lowerpath, temp);
651 	if (err)
652 		return err;
660 		err = ovl_copy_fileattr(inode, &c->lowerpath, &upperpath);
661 		if (err)
662 			return err;
673 		err = ovl_set_origin_fh(ofs, c->origin_fh, temp);
674 		if (err)
675 			return err;
685 		err = ovl_get_verity_digest(ofs, &lowerdatapath, &metacopy_data);
686 		if (err)
687 			return err;
692 		err = ovl_set_metacopy_xattr(ofs, temp, &metacopy_data);
693 		if (err)
694 			return err;
699 		err = ovl_set_size(ofs, temp, &c->stat);
700 	if (!err)
701 		err = ovl_set_attr(ofs, temp, &c->stat);
704 	return err;
714 	int err;
717 	err = security_inode_copy_up(dentry, &cc->new);
718 	if (err < 0)
719 		return err;
747 	int err;
755 	err = ovl_prep_cu_creds(c->dentry, &cc);
756 	if (err)
757 		return err;
774 	err = ovl_copy_up_data(c, &path);
786 		err = -EIO;
790 	} else if (err) {
794 	err = ovl_copy_up_metadata(c, temp);
795 	if (err)
799 		err = ovl_create_index(c->dentry, c->origin_fh, temp);
800 		if (err)
806 	err = PTR_ERR(upper);
810 	err = ovl_do_rename(ofs, wdir, temp, udir, upper, 0);
812 	if (err)
832 	return err;
848 	int err;
850 	err = ovl_prep_cu_creds(c->dentry, &cc);
851 	if (err)
852 		return err;
863 		err = ovl_copy_up_file(ofs, c->dentry, tmpfile, c->stat.size);
864 		if (err)
870 	err = ovl_copy_up_metadata(c, temp);
871 	if (err)
878 	err = PTR_ERR(upper);
880 		err = ovl_do_link(ofs, temp, udir, upper);
885 	if (err)
902 	return err;
916 	int err;
948 		err = ovl_get_index_name(ofs, origin, &c->destname);
949 		if (err)
953 		err = -EIO;
968 		err = ovl_set_impure(c->parent, c->destdir);
970 		if (err)
976 		err = ovl_copy_up_tmpfile(c);
978 		err = ovl_copy_up_workdir(c);
979 	if (err)
988 		err = ovl_set_nlink_upper(c->dentry);
1007 	return err;
1068 	int err;
1077 		err = cap_size = ovl_getxattr_value(&upperpath, XATTR_NAME_CAPS,
1083 	err = ovl_copy_up_data(c, &upperpath);
1084 	if (err)
1093 		err = ovl_do_setxattr(ofs, upperpath.dentry, XATTR_NAME_CAPS,
1096 	if (!err) {
1097 		err = ovl_removexattr(ofs, upperpath.dentry,
1101 	if (err)
1110 	return err;
1116 	int err;
1129 	err = vfs_getattr(&ctx.lowerpath, &ctx.stat,
1131 	if (err)
1132 		return err;
1144 		err = vfs_getattr(&parentpath, &ctx.pstat,
1147 		if (err)
1148 			return err;
1161 	err = ovl_copy_up_start(dentry, flags);
1162 	/* err < 0: interrupted, err > 0: raced with another copy-up */
1163 	if (unlikely(err)) {
1164 		if (err > 0)
1165 			err = 0;
1168 			err = ovl_do_copy_up(&ctx);
1169 		if (!err && parent && !ovl_dentry_has_upper_alias(dentry))
1170 			err = ovl_link_up(&ctx);
1171 		if (!err && ovl_dentry_needs_data_copy_up_locked(dentry, flags))
1172 			err = ovl_copy_up_meta_inode_data(&ctx);
1177 	return err;
1182 	int err = 0;
1199 	err = ovl_verify_lowerdata(dentry);
1200 	if (err)
1201 		return err;
1204 	while (!err) {
1223 		err = ovl_copy_up_one(parent, next, flags);
1230 	return err;