From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: ARC-Seal: i=1; a=rsa-sha256; t=1524824728; cv=none; d=google.com; s=arc-20160816; b=hQiYTvFavL3JIAas7xFqxlHX9czd/S978npW49aymeSESovHrCroRm1/k6yPnMLJZl DiOJbmrMj/aFkPsYBrWx1BrV99deeO0i+szizDvAV6CJ2XQJghrWpzrhQiI1mAnAQRt7 yHuiQbkbr2tGYxjVvpwYFjCUdM1tl2Ay3hZJ0NV5ektSAnqS7CBT4GSxXtGinLkVNghO Jg4p5Cmd+GAMaB/2BWaYNLWAJylCdHYF5oilUwTU7n7Ea0LFTxVWIWTRwq0zpVHRCrm9 ApC7QDQC5luI3y6Yq9jCroZ7HpaIKWcBlfXskIoIQeiqc/oLa9L0AeBp5KxB+lgx2cRN ijqw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from:arc-authentication-results; bh=V70ocO4NjNsTiKx44lIDPiNHPUOsJIKQfMf5UO6eqR0=; b=PdfWEf3QpuxqoUs9/qPFsojfJSiHVjvllPHw5jYn76jcGbxoPDQs2+Uw9D+Tzm+Lpp GFNDOTJxcB0YaHhjmOzDC1X3v60LyqQF1HyPym3Yt/UitQi1QOKZjnX8vkhaAoLwHDnV EKcZ/dbhDgj9IHw5xxS3RmQj47Ea6OZGBo8ew4uBrH7MZ/iHEARIXdhNuGtWOio+yRRY UCQqWm4farDa54QC82OHga/n12WDgHGWJkzlo7hlPi8t+iUGetnTvo4OUm3iFwv9mW7x GV/Z/b1NgTPwvKnvxqjnu4Dc3Wx0Yc+dF/Zix30HzjH8VFGF8uT2/RJSXK7SZMXXJwMZ kwOw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of christianvanbrauner@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=christianvanbrauner@gmail.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of christianvanbrauner@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=christianvanbrauner@gmail.com X-Google-Smtp-Source: AB8JxZpCObLouF2tNEEDLVb0s3uok8B5GM89ZcycwuLz+mVGfq3ohwzrUJOqtNISJhRdqZTupAcYzA== From: Christian Brauner To: ebiederm@xmission.com, davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: avagin@virtuozzo.com, ktkhai@virtuozzo.com, serge@hallyn.com, gregkh@linuxfoundation.org, Christian Brauner Subject: [PATCH net-next 0/2] netns: uevent filtering Date: Fri, 27 Apr 2018 12:23:04 +0200 Message-Id: <20180427102306.8617-1-christian.brauner@ubuntu.com> X-Mailer: git-send-email 2.17.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598894614112495880?= X-GMAIL-MSGID: =?utf-8?q?1598894614112495880?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hey everyone, This is the new approach to uevent filtering as discussed (see the threads in [1], [2], and [3]). This series deals with with fixing up uevent filtering logic: - uevent filtering logic is simplified - locking time on uevent_sock_list is minimized - tagged and untagged kobjects are handled in separate codepaths - permissions for userspace are fixed for network device uevents in network namespaces owned by non-initial user namespaces Udev is now able to see those events correctly which it wasn't before. For example, moving a physical device into a network namespace not owned by the initial user namespaces before gave: root@xen1:~# udevadm --debug monitor -k calling: monitor monitor will print the received events for: KERNEL - the kernel uevent sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored and now after the discussion and solution in [3] correctly gives: root@xen1:~# udevadm --debug monitor -k calling: monitor monitor will print the received events for: KERNEL - the kernel uevent KERNEL[625.301042] add /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/enp1s0f1 (net) KERNEL[625.301109] move /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/enp1s0f1 (net) KERNEL[625.301138] move /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/eth1 (net) KERNEL[655.333272] remove /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/eth1 (net) Thanks! Christian [1]: https://lkml.org/lkml/2018/4/4/739 [2]: https://lkml.org/lkml/2018/4/26/767 [3]: https://lkml.org/lkml/2018/4/26/738 Christian Brauner (2): uevent: add alloc_uevent_skb() helper netns: restrict uevents lib/kobject_uevent.c | 175 ++++++++++++++++++++++++++++++------------- 1 file changed, 123 insertions(+), 52 deletions(-) -- 2.17.0