linux-kernel - Re: [PATCH net-next 2/5] selinux/nlmsg: add RTM

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Message-ID: <55267A2F.5050609@6wind.com>
Date:	Thu, 09 Apr 2015 15:10:07 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	Paul Moore <paul@...l-moore.com>
CC:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/5] selinux/nlmsg: add RTM_GETNSID

Le 09/04/2015 13:10, Paul Moore a écrit :
[snip]
>> --- a/security/selinux/nlmsgtab.c
>> +++ b/security/selinux/nlmsgtab.c
>> @@ -74,6 +74,7 @@ static struct nlmsg_perm nlmsg_route_perms[] =
>>          { RTM_DELMDB,           NETLINK_ROUTE_SOCKET__NLMSG_WRITE  },
>>          { RTM_GETMDB,           NETLINK_ROUTE_SOCKET__NLMSG_READ  },
>>          { RTM_NEWNSID,          NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
>> +       { RTM_DELNSID,          NETLINK_ROUTE_SOCKET__NLMSG_READ  },
>>          { RTM_GETNSID,          NETLINK_ROUTE_SOCKET__NLMSG_READ  },
>>   };
>
> Can you elaborate a bit on the RTM_DELNSID type?  Based only on the
> name I wonder if it should be treated as a "write" and not a "read"
> operation.
The user is not allowed to delete a nsid (no method is implemented). This
RTM_DELNSID is only used for notifications.
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