[389-devel] Please review (resend): [389 Project] #391: Slapd crashes when deleting backends while operations are still in progress

[Noriko Hosoi]

(2012/10/26 12:15), Noriko Hosoi wrote:
> https://fedorahosted.org/389/ticket/391
>
> https://fedorahosted.org/389/attachment/ticket/391/0001-Trac-Ticket-391-Slapd-crashes-when-deleting-backends.patch 
>
>
>  Bug Description: Deleting backend code ldbm_instance_delete_instance_
>  entry_callback had no checking for the ordinary operations accessing
>  the backend instance.  Even if some operations are still in progress,
>  the backend instance could be deleted and it crashes the server.
>
>  Fix Description: Backend struct ldbm_instance had a member inst_ref_
>  count, which was not used.  This patch converts the type PRInt32 to
>  Slapi_Counter and increments it when the backend instance is in use.
>  The delete code checks the counter and if it is greater than 0, it
>  returns SLAPI_DSE_CALLBACK_ERROR.
>