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| author | zhangguanzhang <guanzhangzhang@gmail.com> | 2020-06-12 19:54:10 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-06-12 19:54:10 +0800 |
| commit | 64eae15aa7905dd49f4a348f6b4765dfb4d9dd91 (patch) | |
| tree | 2914c20a2e0e15383da50334cad89b9b85b209a1 /libpod/oci_conmon_linux.go | |
| parent | 3218736cff4b718b8fe855759687cb66f19d6e1e (diff) | |
| parent | 8aa5cf3d45998bc92eaafd67ab2a59e3722bade4 (diff) | |
| download | podman-64eae15aa7905dd49f4a348f6b4765dfb4d9dd91.tar.gz podman-64eae15aa7905dd49f4a348f6b4765dfb4d9dd91.tar.bz2 podman-64eae15aa7905dd49f4a348f6b4765dfb4d9dd91.zip | |
Merge pull request #1 from containers/master
# sync
Diffstat (limited to 'libpod/oci_conmon_linux.go')
| -rw-r--r-- | libpod/oci_conmon_linux.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go index 9c92b036e..0921a532b 100644 --- a/libpod/oci_conmon_linux.go +++ b/libpod/oci_conmon_linux.go @@ -669,6 +669,31 @@ func (r *ConmonOCIRuntime) CheckpointContainer(ctr *Container, options Container return utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, nil, r.path, args...) } +func (r *ConmonOCIRuntime) CheckConmonRunning(ctr *Container) (bool, error) { + if ctr.state.ConmonPID == 0 { + // If the container is running or paused, assume Conmon is + // running. We didn't record Conmon PID on some old versions, so + // that is likely what's going on... + // Unusual enough that we should print a warning message though. + if ctr.ensureState(define.ContainerStateRunning, define.ContainerStatePaused) { + logrus.Warnf("Conmon PID is not set, but container is running!") + return true, nil + } + // Container's not running, so conmon PID being unset is + // expected. Conmon is not running. + return false, nil + } + + // We have a conmon PID. Ping it with signal 0. + if err := unix.Kill(ctr.state.ConmonPID, 0); err != nil { + if err == unix.ESRCH { + return false, nil + } + return false, errors.Wrapf(err, "error pinging container %s conmon with signal 0", ctr.ID()) + } + return true, nil +} + // SupportsCheckpoint checks if the OCI runtime supports checkpointing // containers. func (r *ConmonOCIRuntime) SupportsCheckpoint() bool { |