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2019-12-06Isolation: allowed the use of credentials with unpriv userns.Tiago Natel1-65/+246
The setuid/setgid syscalls requires root capabilities but if the kernel supports unprivileged user namespace then the child process has the full set of capabilities in the new namespace, then we can allow setting "user" and "group" in such cases (this is a common security use case). Tests were added to ensure user gets meaningful error messages for uid/gid mapping misconfigurations.
2019-09-20Closing leaking file descriptor.Tiago Natel1-0/+4
Found by Coverity (CID 349484).
2019-09-19Initial applications isolation support using Linux namespaces.Tiago de Bem Natel de Moura1-0/+263