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Message-Id: <1444419297-16232-1-git-send-email-lk4d4@docker.com> Date: Fri, 9 Oct 2015 12:34:55 -0700 From: Alexander Morozov <alexandr.morozov@...ker.com> To: Miklos Szeredi <miklos@...redi.hu> Cc: LKML <linux-kernel@...r.kernel.org>, Alexander Morozov <lk4d4@...ker.com> Subject: [PATCH 0/2] Fix hardlinks in overlay There were reports that overlay doesn't work very well with unix-sockets. In particular you can't access unix-socket through hardlink on overlay fs. Problem is that overlay creates different inodes for hardlinks and code in net/unix/af_unix.c relies on inodes for unix-socket lookup. I think this affects any code which relies on inodes from kern_path. There is helper d_backing_inode, which I think supposed to get inodes from underlying fs (for example ext4), but in current implementation it does nothing. These patches made on top of v4.3-rc4 of main linux tree (master is broken for my ubuntu VM), but I tested that they applying on master and there was no changes to overlay since v4.3-rc4. Alexander Morozov (2): fs/overlay: move update and instantiate dentry code to function fs/overlay: use same inodes for hardlinks fs/overlayfs/dir.c | 41 +++++++++++++++++++++++++++++------------ 1 file changed, 29 insertions(+), 12 deletions(-) -- 2.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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