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authorLennart Poettering <lennart@poettering.net>2014-05-28 18:37:11 +0800
committerLennart Poettering <lennart@poettering.net>2014-05-28 18:53:44 +0800
commitfdd25311706bd32580ec4d43211cdf4665d2f9de (patch)
tree37f3d1859779e00321ac69882b40723d5c875531 /src/shared/path-util.h
parentd2edfae0f9bdbecf6a8518e2a5bcf06f470e0d9e (diff)
virt: rework container detection logic
Instead of accessing /proc/1/environ directly, trying to read the $container variable from it, let's make PID 1 save the contents of that variable to /run/systemd/container. This allows us to detect containers without the need for CAP_SYS_PTRACE, which allows us to drop it from a number of daemons and from the file capabilities of systemd-detect-virt. Also, don't consider chroot a container technology anymore. After all, we don't consider file system namespaces container technology anymore, and hence chroot() should be considered a container even less.
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