If container is not in correct state podman exec should exit with 126

This way a tool can determine if the container exists or not, but is in the
wrong state.

Since 126 is documeted as:
**_126_** if the **_contained command_** cannot be invoked

It makes sense that the container would exit with this state.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/cmd/podman/exec.go b/cmd/podman/exec.go
index deff44a92..0684da842 100644
--- a/cmd/podman/exec.go
+++ b/cmd/podman/exec.go
@@ -125,5 +125,10 @@ func execCmd(c *cliconfig.ExecValues) error {
 	streams.AttachError = true
 	streams.AttachInput = true
 
-	return ctr.Exec(c.Tty, c.Privileged, envs, cmd, c.User, c.Workdir, streams, c.PreserveFDs)
+	err = ctr.Exec(c.Tty, c.Privileged, envs, cmd, c.User, c.Workdir, streams, c.PreserveFDs)
+	if errors.Cause(err) == libpod.ErrCtrStateInvalid {
+		exitCode = 126
+	}
+
+	return err
 }