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-rw-r--r--libpod/container_exec.go69
-rw-r--r--libpod/define/inspect.go54
-rw-r--r--libpod/options.go2
-rw-r--r--libpod/runtime_ctr.go18
4 files changed, 87 insertions, 56 deletions
diff --git a/libpod/container_exec.go b/libpod/container_exec.go
index 6b88e5205..5469462f8 100644
--- a/libpod/container_exec.go
+++ b/libpod/container_exec.go
@@ -94,67 +94,14 @@ func (e *ExecSession) ContainerID() string {
return e.ContainerId
}
-// InspectExecSession contains information about a given exec session.
-type InspectExecSession struct {
- // CanRemove is legacy and used purely for compatibility reasons.
- // Will always be set to true, unless the exec session is running.
- CanRemove bool `json:"CanRemove"`
- // ContainerID is the ID of the container this exec session is attached
- // to.
- ContainerID string `json:"ContainerID"`
- // DetachKeys are the detach keys used by the exec session.
- // If set to "" the default keys are being used.
- // Will show "<none>" if no detach keys are set.
- DetachKeys string `json:"DetachKeys"`
- // ExitCode is the exit code of the exec session. Will be set to 0 if
- // the exec session has not yet exited.
- ExitCode int `json:"ExitCode"`
- // ID is the ID of the exec session.
- ID string `json:"ID"`
- // OpenStderr is whether the container's STDERR stream will be attached.
- // Always set to true if the exec session created a TTY.
- OpenStderr bool `json:"OpenStderr"`
- // OpenStdin is whether the container's STDIN stream will be attached
- // to.
- OpenStdin bool `json:"OpenStdin"`
- // OpenStdout is whether the container's STDOUT stream will be attached.
- // Always set to true if the exec session created a TTY.
- OpenStdout bool `json:"OpenStdout"`
- // Running is whether the exec session is running.
- Running bool `json:"Running"`
- // Pid is the PID of the exec session's process.
- // Will be set to 0 if the exec session is not running.
- Pid int `json:"Pid"`
- // ProcessConfig contains information about the exec session's process.
- ProcessConfig *InspectExecProcess `json:"ProcessConfig"`
-}
-
-// InspectExecProcess contains information about the process in a given exec
-// session.
-type InspectExecProcess struct {
- // Arguments are the arguments to the entrypoint command of the exec
- // session.
- Arguments []string `json:"arguments"`
- // Entrypoint is the entrypoint for the exec session (the command that
- // will be executed in the container).
- Entrypoint string `json:"entrypoint"`
- // Privileged is whether the exec session will be started with elevated
- // privileges.
- Privileged bool `json:"privileged"`
- // Tty is whether the exec session created a terminal.
- Tty bool `json:"tty"`
- // User is the user the exec session was started as.
- User string `json:"user"`
-}
-
// Inspect inspects the given exec session and produces detailed output on its
// configuration and current state.
-func (e *ExecSession) Inspect() (*InspectExecSession, error) {
+func (e *ExecSession) Inspect() (*define.InspectExecSession, error) {
if e.Config == nil {
return nil, errors.Wrapf(define.ErrInternal, "given exec session does not have a configuration block")
}
- output := new(InspectExecSession)
+ output := new(define.InspectExecSession)
output.CanRemove = e.State != define.ExecStateRunning
output.ContainerID = e.ContainerId
if e.Config.DetachKeys != nil {
@@ -167,7 +114,7 @@ func (e *ExecSession) Inspect() (*InspectExecSession, error) {
output.OpenStdout = e.Config.AttachStdout
output.Running = e.State == define.ExecStateRunning
output.Pid = e.PID
- output.ProcessConfig = new(InspectExecProcess)
+ output.ProcessConfig = new(define.InspectExecProcess)
if len(e.Config.Command) > 0 {
output.ProcessConfig.Entrypoint = e.Config.Command[0]
if len(e.Config.Command) > 1 {
@@ -213,6 +160,11 @@ func (c *Container) ExecCreate(config *ExecConfig) (string, error) {
return "", errors.Wrapf(define.ErrInvalidArg, "cannot specify streams to attach to when exec session has a pseudoterminal")
}
+ // Verify that we are in a good state to continue
+ if !c.ensureState(define.ContainerStateRunning) {
+ return "", errors.Wrapf(define.ErrCtrStateInvalid, "can only create exec sessions on running containers")
+ }
+
// Generate an ID for our new exec session
sessionID := stringid.GenerateNonCryptoID()
found := true
@@ -279,6 +231,11 @@ func (c *Container) ExecStartAndAttach(sessionID string, streams *AttachStreams)
}
}
+ // Verify that we are in a good state to continue
+ if !c.ensureState(define.ContainerStateRunning) {
+ return errors.Wrapf(define.ErrCtrStateInvalid, "can only start exec sessions when their container is running")
+ }
+
session, ok := c.state.ExecSessions[sessionID]
if !ok {
return errors.Wrapf(define.ErrNoSuchExecSession, "container %s has no exec session with ID %s", c.ID(), sessionID)
diff --git a/libpod/define/inspect.go b/libpod/define/inspect.go
new file mode 100644
index 000000000..b7cd13f82
--- /dev/null
+++ b/libpod/define/inspect.go
@@ -0,0 +1,54 @@
+package define
+
+// InspectExecSession contains information about a given exec session.
+type InspectExecSession struct {
+ // CanRemove is legacy and used purely for compatibility reasons.
+ // Will always be set to true, unless the exec session is running.
+ CanRemove bool `json:"CanRemove"`
+ // ContainerID is the ID of the container this exec session is attached
+ // to.
+ ContainerID string `json:"ContainerID"`
+ // DetachKeys are the detach keys used by the exec session.
+ // If set to "" the default keys are being used.
+ // Will show "<none>" if no detach keys are set.
+ DetachKeys string `json:"DetachKeys"`
+ // ExitCode is the exit code of the exec session. Will be set to 0 if
+ // the exec session has not yet exited.
+ ExitCode int `json:"ExitCode"`
+ // ID is the ID of the exec session.
+ ID string `json:"ID"`
+ // OpenStderr is whether the container's STDERR stream will be attached.
+ // Always set to true if the exec session created a TTY.
+ OpenStderr bool `json:"OpenStderr"`
+ // OpenStdin is whether the container's STDIN stream will be attached
+ // to.
+ OpenStdin bool `json:"OpenStdin"`
+ // OpenStdout is whether the container's STDOUT stream will be attached.
+ // Always set to true if the exec session created a TTY.
+ OpenStdout bool `json:"OpenStdout"`
+ // Running is whether the exec session is running.
+ Running bool `json:"Running"`
+ // Pid is the PID of the exec session's process.
+ // Will be set to 0 if the exec session is not running.
+ Pid int `json:"Pid"`
+ // ProcessConfig contains information about the exec session's process.
+ ProcessConfig *InspectExecProcess `json:"ProcessConfig"`
+}
+
+// InspectExecProcess contains information about the process in a given exec
+// session.
+type InspectExecProcess struct {
+ // Arguments are the arguments to the entrypoint command of the exec
+ // session.
+ Arguments []string `json:"arguments"`
+ // Entrypoint is the entrypoint for the exec session (the command that
+ // will be executed in the container).
+ Entrypoint string `json:"entrypoint"`
+ // Privileged is whether the exec session will be started with elevated
+ // privileges.
+ Privileged bool `json:"privileged"`
+ // Tty is whether the exec session created a terminal.
+ Tty bool `json:"tty"`
+ // User is the user the exec session was started as.
+ User string `json:"user"`
+}
diff --git a/libpod/options.go b/libpod/options.go
index 9b61d7947..74f9c485e 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -21,6 +21,8 @@ import (
var (
// NameRegex is a regular expression to validate container/pod names.
+ // This must NOT be changed from outside of Libpod. It should be a
+ // constant, but Go won't let us do that.
NameRegex = regexp.MustCompile("^[a-zA-Z0-9][a-zA-Z0-9_.-]*$")
// RegexError is thrown in presence of an invalid container/pod name.
RegexError = errors.Wrapf(define.ErrInvalidArg, "names must match [a-zA-Z0-9][a-zA-Z0-9_.-]*")
diff --git a/libpod/runtime_ctr.go b/libpod/runtime_ctr.go
index 0b18436ca..b99e6df84 100644
--- a/libpod/runtime_ctr.go
+++ b/libpod/runtime_ctr.go
@@ -830,6 +830,24 @@ func (r *Runtime) GetLatestContainer() (*Container, error) {
return ctrs[lastCreatedIndex], nil
}
+// GetExecSessionContainer gets the container that a given exec session ID is
+// attached to.
+func (r *Runtime) GetExecSessionContainer(id string) (*Container, error) {
+ r.lock.RLock()
+ defer r.lock.RUnlock()
+
+ if !r.valid {
+ return nil, define.ErrRuntimeStopped
+ }
+
+ ctrID, err := r.state.GetExecSession(id)
+ if err != nil {
+ return nil, err
+ }
+
+ return r.state.Container(ctrID)
+}
+
// PruneContainers removes stopped and exited containers from localstorage. A set of optional filters
// can be provided to be more granular.
func (r *Runtime) PruneContainers(filterFuncs []ContainerFilter) (map[string]int64, map[string]error, error) {