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3560ccd5df
Podman needs to be able to detect when a system reboot occurs to do certain types of cleanup operation (for example, reset container states, clean up IPAM allocations, etc). our current method for this is a sentinel file on a tmpfs filesystem. The problem emerges that there is no directory that is guaranteed to be a tmpfs and is also guaranteed to be accessible to rootless users in the FHS. If the user has a systemd user session, we can depend on /run/user/$UID, but we can't reliably say that they do. This code will detect the no-tmpfs-but-reboot-occurred case by writing the current system boot ID to our tmpfs sentinel file when it is created, and checking that file every time Podman starts to make sure that the current boot ID matches the cached one in the sentinel file. If they don't match, a reboot occurred and the sentinel file was not on a tmpfs and thus survived. In that case, throw an error telling the user to remove certain directories (the ones that are supposed to be tmpfs), so we can proceed as expected. Signed-off-by: Matt Heon <mheon@redhat.com>
11 lines
166 B
Go
11 lines
166 B
Go
//go:build !remote
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package libpod
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func checkCgroups2UnifiedMode(runtime *Runtime) {
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}
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func (r *Runtime) checkBootID(runtimeAliveFile string) error {
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return nil
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}
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