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Whether the variable was found is already returned by syscall.Getenv.
os.Getenv drops this value while os.Lookupenv passes it along.
PiperOrigin-RevId: 351674032
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Updates #1035
PiperOrigin-RevId: 342168926
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PiperOrigin-RevId: 340536306
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OCI configuration includes support for specifying seccomp filters. In runc,
these filter configurations are converted into seccomp BPF programs and loaded
into the kernel via libseccomp. runsc needs to be a static binary so, for
runsc, we cannot rely on a C library and need to implement the functionality
in Go.
The generator added here implements basic support for taking OCI seccomp
configuration and converting it into a seccomp BPF program with the same
behavior as a program generated by libseccomp.
- New conditional operations were added to pkg/seccomp to support operations
available in OCI.
- AllowAny and AllowValue were renamed to MatchAny and EqualTo to better reflect
that syscalls matching the conditionals result in the provided action not
simply SCMP_RET_ALLOW.
- BuildProgram in pkg/seccomp no longer panics if provided an empty list of
rules. It now builds a program with the architecture sanity check only.
- ProgramBuilder now allows adding labels that are unused. However, backwards
jumps are still not permitted.
Fixes #510
PiperOrigin-RevId: 331938697
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This allows runsc flags to be set per sandbox instance. For
example, K8s pod annotations can be used to enable
--debug for a single pod, making troubleshoot much easier.
Similarly, features like --vfs2 can be enabled for
experimentation without affecting other pods in the node.
Closes #3494
PiperOrigin-RevId: 329542815
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Use reflection and tags to provide automatic conversion from
Config to flags. This makes adding new flags less error-prone,
skips flags using default values (easier to read), and makes
tests correctly use default flag values for test Configs.
Updates #3494
PiperOrigin-RevId: 328662070
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