podman/libpod/define/errors.go

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package define
import (
"errors"
)
var (
// ErrNoSuchCtr indicates the requested container does not exist
ErrNoSuchCtr = errors.New("no such container")
// ErrNoSuchPod indicates the requested pod does not exist
ErrNoSuchPod = errors.New("no such pod")
// ErrNoSuchImage indicates the requested image does not exist
ErrNoSuchImage = errors.New("no such image")
// ErrNoSuchTag indicates the requested image tag does not exist
ErrNoSuchTag = errors.New("no such tag")
// ErrNoSuchVolume indicates the requested volume does not exist
ErrNoSuchVolume = errors.New("no such volume")
// ErrNoSuchNetwork indicates the requested network does not exist
ErrNoSuchNetwork = errors.New("network not found")
// ErrNoSuchExecSession indicates that the requested exec session does
// not exist.
ErrNoSuchExecSession = errors.New("no such exec session")
// ErrCtrExists indicates a container with the same name or ID already
// exists
ErrCtrExists = errors.New("container already exists")
// ErrPodExists indicates a pod with the same name or ID already exists
ErrPodExists = errors.New("pod already exists")
// ErrImageExists indicates an image with the same ID already exists
ErrImageExists = errors.New("image already exists")
// ErrVolumeExists indicates a volume with the same name already exists
ErrVolumeExists = errors.New("volume already exists")
// ErrExecSessionExists indicates an exec session with the same ID
// already exists.
ErrExecSessionExists = errors.New("exec session already exists")
// ErrCtrStateInvalid indicates a container is in an improper state for
// the requested operation
ErrCtrStateInvalid = errors.New("container state improper")
// ErrExecSessionStateInvalid indicates that an exec session is in an
// improper state for the requested operation
ErrExecSessionStateInvalid = errors.New("exec session state improper")
// ErrVolumeBeingUsed indicates that a volume is being used by at least one container
ErrVolumeBeingUsed = errors.New("volume is being used")
// ErrRuntimeFinalized indicates that the runtime has already been
// created and cannot be modified
ErrRuntimeFinalized = errors.New("runtime has been finalized")
// ErrCtrFinalized indicates that the container has already been created
// and cannot be modified
ErrCtrFinalized = errors.New("container has been finalized")
// ErrPodFinalized indicates that the pod has already been created and
// cannot be modified
ErrPodFinalized = errors.New("pod has been finalized")
// ErrVolumeFinalized indicates that the volume has already been created and
// cannot be modified
ErrVolumeFinalized = errors.New("volume has been finalized")
// ErrInvalidArg indicates that an invalid argument was passed
ErrInvalidArg = errors.New("invalid argument")
// ErrEmptyID indicates that an empty ID was passed
ErrEmptyID = errors.New("name or ID cannot be empty")
// ErrInternal indicates an internal library error
ErrInternal = errors.New("internal libpod error")
// ErrPodPartialFail indicates that a pod operation was only partially
// successful, and some containers within the pod failed.
ErrPodPartialFail = errors.New("some containers failed")
// ErrDetach indicates that an attach session was manually detached by
// the user.
ErrDetach = errors.New("detached from container")
// ErrWillDeadlock indicates that the requested operation will cause a
// deadlock. This is usually caused by upgrade issues, and is resolved
// by renumbering the locks.
ErrWillDeadlock = errors.New("deadlock due to lock mismatch")
// ErrNoCgroups indicates that the container does not have its own
// CGroup.
ErrNoCgroups = errors.New("this container does not have a cgroup")
// ErrNoLogs indicates that this container is not creating a log so log
// operations cannot be performed on it
ErrNoLogs = errors.New("this container is not logging output")
// ErrRootless indicates that the given command cannot but run without
// root.
ErrRootless = errors.New("operation requires root privileges")
// 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")
// ErrCtrStopped indicates that the requested container is not running
// and the requested operation cannot be performed until it is started
ErrCtrStopped = errors.New("container is stopped")
// ErrCtrRemoved indicates that the container has already been removed
// and no further operations can be performed on it
ErrCtrRemoved = errors.New("container has already been removed")
// ErrPodRemoved indicates that the pod has already been removed and no
// further operations can be performed on it
ErrPodRemoved = errors.New("pod has already been removed")
// ErrVolumeRemoved indicates that the volume has already been removed and
// no further operations can be performed on it
ErrVolumeRemoved = errors.New("volume has already been removed")
// ErrExecSessionRemoved indicates that the exec session has already
// been removed and no further operations can be performed on it.
ErrExecSessionRemoved = errors.New("exec session has already been removed")
// ErrDBClosed indicates that the connection to the state database has
// already been closed
ErrDBClosed = errors.New("database connection already closed")
// ErrDBBadConfig indicates that the database has a different schema or
// was created by a libpod with a different config
ErrDBBadConfig = errors.New("database configuration mismatch")
// ErrNSMismatch indicates that the requested pod or container is in a
// different namespace and cannot be accessed or modified.
ErrNSMismatch = errors.New("target is in a different namespace")
// ErrNotImplemented indicates that the requested functionality is not
// yet present
ErrNotImplemented = errors.New("not yet implemented")
// ErrOSNotSupported indicates the function is not available on the particular
// OS.
ErrOSNotSupported = errors.New("no support for this OS yet")
// ErrOCIRuntime indicates a generic error from the OCI runtime
ErrOCIRuntime = errors.New("OCI runtime error")
// ErrOCIRuntimePermissionDenied indicates the OCI runtime attempted to invoke a command that returned
// a permission denied error
ErrOCIRuntimePermissionDenied = errors.New("OCI runtime permission denied error")
// ErrOCIRuntimeNotFound indicates the OCI runtime attempted to invoke a command
// that was not found
ErrOCIRuntimeNotFound = errors.New("OCI runtime command not found error")
// ErrOCIRuntimeUnavailable indicates that the OCI runtime associated to a container
// could not be found in the configuration
ErrOCIRuntimeUnavailable = errors.New("OCI runtime not available in the current configuration")
// ErrConmonOutdated indicates the version of conmon found (whether via the configuration or $PATH)
// is out of date for the current podman version
ErrConmonOutdated = errors.New("outdated conmon version")
Ensure Conmon is alive before waiting for exit file This came out of a conversation with Valentin about systemd-managed Podman. He discovered that unit files did not properly handle cases where Conmon was dead - the ExecStopPost `podman rm --force` line was not actually removing the container, but interestingly, adding a `podman cleanup --rm` line would remove it. Both of these commands do the same thing (minus the `podman cleanup --rm` command not force-removing running containers). Without a running Conmon instance, the container process is still running (assuming you killed Conmon with SIGKILL and it had no chance to kill the container it managed), but you can still kill the container itself with `podman stop` - Conmon is not involved, only the OCI Runtime. (`podman rm --force` and `podman stop` use the same code to kill the container). The problem comes when we want to get the container's exit code - we expect Conmon to make us an exit file, which it's obviously not going to do, being dead. The first `podman rm` would fail because of this, but importantly, it would (after failing to retrieve the exit code correctly) set container status to Exited, so that the second `podman cleanup` process would succeed. To make sure the first `podman rm --force` succeeds, we need to catch the case where Conmon is already dead, and instead of waiting for an exit file that will never come, immediately set the Stopped state and remove an error that can be caught and handled. Signed-off-by: Matthew Heon <mheon@redhat.com>
2020-06-08 17:34:12 +00:00
// ErrConmonDead indicates that the container's conmon process has been
// killed, preventing normal operation.
ErrConmonDead = errors.New("conmon process killed")
// ErrImageInUse indicates the requested operation failed because the image was in use
ErrImageInUse = errors.New("image is being used")
// ErrNetworkOnPodContainer indicates the user wishes to alter network attributes on a container
// in a pod. This cannot be done as the infra container has all the network information
ErrNetworkOnPodContainer = errors.New("network cannot be configured when it is shared with a pod")
// ErrNetworkInUse indicates the requested operation failed because the network was in use
ErrNetworkInUse = errors.New("network is being used")
// ErrStoreNotInitialized indicates that the container storage was never
// initialized.
ErrStoreNotInitialized = errors.New("the container storage was never initialized")
)