From b6775d5d22d463e4d92d6358ccd48dab6f8a1862 Mon Sep 17 00:00:00 2001
From: Matthew Heon <mheon@redhat.com>
Date: Mon, 11 Feb 2019 12:57:08 -0500
Subject: Fix manual detach from containers to not wait for exit
At present, when manually detaching from an attached container
(using the detach hotkeys, default C-p C-q), Podman will still
wait for the container to exit to obtain its exit code (so we can
set Podman's exit code to match). This is correct in the case
where attach finished because the container exited, but very
wrong for the manual detach case.
As a result of this, we can no longer guarantee that the cleanup
and --rm functions will fire at the end of 'podman run' - we may
be exiting before we get that far. Cleanup is easy enough - we
swap to unconditionally using the cleanup processes we've used
for detached and rootless containers all along. To duplicate --rm
we need to also teach 'podman cleanup' to optionally remove
containers instead of cleaning them up.
(There is an argument for just using 'podman rm' instead of
'podman cleanup --rm', but cleanup does have different semantics
given that we only ever expect it to run when the container has
just exited. I think it might be useful to keep the two separate
for things like 'podman events'...)
Signed-off-by: Matthew Heon <mheon@redhat.com>
---
libpod/container_attach_linux.go | 4 ++--
libpod/errors.go | 5 +++++
2 files changed, 7 insertions(+), 2 deletions(-)
(limited to 'libpod')
diff --git a/libpod/container_attach_linux.go b/libpod/container_attach_linux.go
index 1d6f0bd96..3ff6ddc76 100644
--- a/libpod/container_attach_linux.go
+++ b/libpod/container_attach_linux.go
@@ -109,8 +109,8 @@ func (c *Container) attachContainerSocket(resize <-chan remotecommand.TerminalSi
case err := <-receiveStdoutError:
return err
case err := <-stdinDone:
- if _, ok := err.(utils.DetachError); ok {
- return nil
+ if err == ErrDetach {
+ return err
}
if streams.AttachOutput || streams.AttachError {
return <-receiveStdoutError
diff --git a/libpod/errors.go b/libpod/errors.go
index 30a19d30f..dd82d0796 100644
--- a/libpod/errors.go
+++ b/libpod/errors.go
@@ -4,6 +4,7 @@ import (
"errors"
"github.com/containers/libpod/libpod/image"
+ "github.com/containers/libpod/utils"
)
var (
@@ -56,6 +57,10 @@ var (
// ErrInternal indicates an internal library error
ErrInternal = errors.New("internal libpod error")
+ // ErrDetach indicates that an attach session was manually detached by
+ // the user.
+ ErrDetach = utils.ErrDetach
+
// ErrRuntimeStopped indicates that the runtime has already been shut
// down and no further operations can be performed on it
ErrRuntimeStopped = errors.New("runtime has already been stopped")
--
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