Domen Kožar a6670c1a0b Fixes #18124: atomically replace /var/setuid-wrappers/ (#18186) ... Before this commit updating /var/setuid-wrappers/ folder introduced a small window where NixOS activation scripts could be terminated and resulted into empty /var/setuid-wrappers/ folder. That's very unfortunate because one might lose sudo binary. Instead we use two atomic operations mv and ln (as described in https://axialcorps.com/2013/07/03/atomically-replacing-files-and-directories/) to achieve atomicity. Since /var/setuid-wrappers is not a directory anymore, tmpfs mountpoints were removed in installation scripts and in boot process. Tested: - upgrade /var/setuid-wrappers/ from folder to a symlink - make sure /run/setuid-wrappers-dirs/ legacy symlink is really deleted		2016-09-01 20:57:51 +02:00
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activation	nixos filesystems: unify early filesystems handling	2016-08-27 13:38:20 +03:00
boot	Fixes #18124: atomically replace /var/setuid-wrappers/ (#18186)	2016-09-01 20:57:51 +02:00
etc	etc: remove obsolete directories	2016-07-25 15:50:53 +03:00