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authorStefano Brivio <sbrivio@redhat.com>2024-02-15 23:24:32 +0100
committerStefano Brivio <sbrivio@redhat.com>2024-02-16 08:47:14 +0100
commit8f3f8e190c43fc6a3adc7912aaa262e86f9d0748 (patch)
tree52538ea8bd1e6d89062a2eaeaeaeb405c734433d /udp.c
parentf57a2fb4d5ee8728d92250fc6eb45ffeab221990 (diff)
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pasta: Add fallback timer mechanism to check if namespace is gone
We don't know how frequently this happens, but hitting fs.inotify.max_user_watches or similar sysctl limits is definitely not out of question, and Paul mentioned that, for example, Podman's CI environments hit similar issues in the past. Introduce a fallback mechanism based on a timer file descriptor: we grab the directory handle at startup, and we can then use openat(), triggered periodically, to check if the (network) namespace directory still exists. If openat() fails at some point, exit. Link: https://github.com/containers/podman/pull/21563#issuecomment-1943505707 Reported-by: Paul Holzinger <pholzing@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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