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authorMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
committerMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
commita031b83a09a8628435317a03f199cdc18b78262f (patch)
treebc017a96769ce6de33745b8b0b1304ccf38e9df0 /libkpod/kill.go
parent2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff)
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Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'libkpod/kill.go')
-rw-r--r--libkpod/kill.go45
1 files changed, 45 insertions, 0 deletions
diff --git a/libkpod/kill.go b/libkpod/kill.go
new file mode 100644
index 000000000..b2c3219a2
--- /dev/null
+++ b/libkpod/kill.go
@@ -0,0 +1,45 @@
+package libkpod
+
+import (
+ "github.com/docker/docker/pkg/signal"
+ "github.com/kubernetes-incubator/cri-o/oci"
+ "github.com/kubernetes-incubator/cri-o/utils"
+ "github.com/pkg/errors"
+ "os"
+ "syscall"
+)
+
+// Reverse lookup signal string from its map
+func findStringInSignalMap(killSignal syscall.Signal) (string, error) {
+ for k, v := range signal.SignalMap {
+ if v == killSignal {
+ return k, nil
+ }
+ }
+ return "", errors.Errorf("unable to convert signal to string")
+
+}
+
+// ContainerKill sends the user provided signal to the containers primary process.
+func (c *ContainerServer) ContainerKill(container string, killSignal syscall.Signal) (string, error) { // nolint
+ ctr, err := c.LookupContainer(container)
+ if err != nil {
+ return "", errors.Wrapf(err, "failed to find container %s", container)
+ }
+ c.runtime.UpdateStatus(ctr)
+ cStatus := c.runtime.ContainerStatus(ctr)
+
+ // If the container is not running, error and move on.
+ if cStatus.Status != oci.ContainerStateRunning {
+ return "", errors.Errorf("cannot kill container %s: it is not running", container)
+ }
+ signalString, err := findStringInSignalMap(killSignal)
+ if err != nil {
+ return "", err
+ }
+ if err := utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, c.runtime.Path(ctr), "kill", ctr.ID(), signalString); err != nil {
+ return "", err
+ }
+ c.ContainerStateToDisk(ctr)
+ return ctr.ID(), nil
+}