mirror of https://github.com/containers/podman
461 lines
24 KiB
Go
461 lines
24 KiB
Go
package libpod
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import (
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"net"
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"time"
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"github.com/containers/common/libnetwork/types"
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"github.com/containers/common/pkg/secrets"
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"github.com/containers/image/v5/manifest"
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"github.com/containers/podman/v4/libpod/define"
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"github.com/containers/podman/v4/pkg/namespaces"
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"github.com/containers/podman/v4/pkg/specgen"
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"github.com/containers/storage"
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spec "github.com/opencontainers/runtime-spec/specs-go"
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)
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// ContainerConfig contains all information that was used to create the
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// container. It may not be changed once created.
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// It is stored, read-only, on disk in Libpod's State.
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// Any changes will not be written back to the database, and will cause
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// inconsistencies with other Libpod instances.
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type ContainerConfig struct {
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// Spec is OCI runtime spec used to create the container. This is passed
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// in when the container is created, but it is not the final spec used
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// to run the container - it will be modified by Libpod to add things we
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// manage (e.g. bind mounts for /etc/resolv.conf, named volumes, a
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// network namespace prepared by the network backend) in the
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// generateSpec() function.
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Spec *spec.Spec `json:"spec"`
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// ID is a hex-encoded 256-bit pseudorandom integer used as a unique
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// identifier for the container. IDs are globally unique in Libpod -
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// once an ID is in use, no other container or pod will be created with
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// the same one until the holder of the ID has been removed.
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// ID is generated by Libpod, and cannot be chosen or influenced by the
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// user (except when restoring a checkpointed container).
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// ID is guaranteed to be 64 characters long.
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ID string `json:"id"`
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// Name is a human-readable name for the container. All containers must
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// have a non-empty name. Name may be provided when the container is
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// created; if no name is chosen, a name will be auto-generated.
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Name string `json:"name"`
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// Pod is the full ID of the pod the container belongs to. If the
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// container does not belong to a pod, this will be empty.
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// If this is not empty, a pod with this ID is guaranteed to exist in
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// the state for the duration of this container's existence.
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Pod string `json:"pod,omitempty"`
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// Namespace is the libpod Namespace the container is in.
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// Namespaces are used to divide containers in the state.
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Namespace string `json:"namespace,omitempty"`
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// LockID is the ID of this container's lock. Each container, pod, and
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// volume is assigned a unique Lock (from one of several backends) by
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// the libpod Runtime. This lock will belong only to this container for
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// the duration of the container's lifetime.
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LockID uint32 `json:"lockID"`
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// CreateCommand is the full command plus arguments that were used to
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// create the container. It is shown in the output of Inspect, and may
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// be used to recreate an identical container for automatic updates or
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// portable systemd unit files.
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CreateCommand []string `json:"CreateCommand,omitempty"`
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// RawImageName is the raw and unprocessed name of the image when creating
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// the container (as specified by the user). May or may not be set. One
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// use case to store this data are auto-updates where we need the _exact_
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// name and not some normalized instance of it.
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RawImageName string `json:"RawImageName,omitempty"`
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// IDMappings are UID/GID mappings used by the container's user
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// namespace. They are used by the OCI runtime when creating the
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// container, and by c/storage to ensure that the container's files have
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// the appropriate owner.
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IDMappings storage.IDMappingOptions `json:"idMappingsOptions,omitempty"`
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// Dependencies are the IDs of dependency containers.
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// These containers must be started before this container is started.
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Dependencies []string
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// rewrite is an internal bool to indicate that the config was modified after
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// a read from the db, e.g. to migrate config fields after an upgrade.
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// This field should never be written to the db, the json tag ensures this.
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rewrite bool `json:"-"`
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// embedded sub-configs
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ContainerRootFSConfig
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ContainerSecurityConfig
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ContainerNameSpaceConfig
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ContainerNetworkConfig
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ContainerImageConfig
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ContainerMiscConfig
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}
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// ContainerRootFSConfig is an embedded sub-config providing config info
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// about the container's root fs.
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type ContainerRootFSConfig struct {
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// RootfsImageID is the ID of the image used to create the container.
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// If the container was created from a Rootfs, this will be empty.
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// If non-empty, Podman will create a root filesystem for the container
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// based on an image with this ID.
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// This conflicts with Rootfs.
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RootfsImageID string `json:"rootfsImageID,omitempty"`
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// RootfsImageName is the (normalized) name of the image used to create
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// the container. If the container was created from a Rootfs, this will
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// be empty.
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RootfsImageName string `json:"rootfsImageName,omitempty"`
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// Rootfs is a directory to use as the container's root filesystem.
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// If RootfsImageID is set, this will be empty.
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// If this is set, Podman will not create a root filesystem for the
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// container based on an image, and will instead use the given directory
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// as the container's root.
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// Conflicts with RootfsImageID.
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Rootfs string `json:"rootfs,omitempty"`
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// RootfsOverlay tells if rootfs has to be mounted as an overlay
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RootfsOverlay bool `json:"rootfs_overlay,omitempty"`
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// RootfsMapping specifies if there are mappings to apply to the rootfs.
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RootfsMapping *string `json:"rootfs_mapping,omitempty"`
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// ShmDir is the path to be mounted on /dev/shm in container.
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// If not set manually at creation time, Libpod will create a tmpfs
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// with the size specified in ShmSize and populate this with the path of
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// said tmpfs.
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ShmDir string `json:"ShmDir,omitempty"`
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// NoShmShare indicates whether /dev/shm can be shared with other containers
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NoShmShare bool `json:"NOShmShare,omitempty"`
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// NoShm indicates whether a tmpfs should be created and mounted on /dev/shm
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NoShm bool `json:"NoShm,omitempty"`
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// ShmSize is the size of the container's SHM. Only used if ShmDir was
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// not set manually at time of creation.
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ShmSize int64 `json:"shmSize"`
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// ShmSizeSystemd is the size of systemd-specific tmpfs mounts
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ShmSizeSystemd int64 `json:"shmSizeSystemd"`
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// Static directory for container content that will persist across
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// reboot.
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// StaticDir is a persistent directory for Libpod files that will
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// survive system reboot. It is not part of the container's rootfs and
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// is not mounted into the container. It will be removed when the
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// container is removed.
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// Usually used to store container log files, files that will be bind
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// mounted into the container (e.g. the resolv.conf we made for the
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// container), and other per-container content.
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StaticDir string `json:"staticDir"`
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// Mounts contains all additional mounts into the container rootfs.
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// It is presently only used for the container's SHM directory.
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// These must be unmounted before the container's rootfs is unmounted.
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Mounts []string `json:"mounts,omitempty"`
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// NamedVolumes lists the Libpod named volumes to mount into the
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// container. Each named volume is guaranteed to exist so long as this
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// container exists.
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NamedVolumes []*ContainerNamedVolume `json:"namedVolumes,omitempty"`
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// OverlayVolumes lists the overlay volumes to mount into the container.
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OverlayVolumes []*ContainerOverlayVolume `json:"overlayVolumes,omitempty"`
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// ImageVolumes lists the image volumes to mount into the container.
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// Please note that this is named ctrImageVolumes in JSON to
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// distinguish between these and the old `imageVolumes` field in Podman
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// pre-1.8, which was used in very old Podman versions to determine how
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// image volumes were handled in Libpod (support for these eventually
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// moved out of Libpod into pkg/specgen).
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// Please DO NOT re-use the `imageVolumes` name in container JSON again.
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ImageVolumes []*ContainerImageVolume `json:"ctrImageVolumes,omitempty"`
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// CreateWorkingDir indicates that Libpod should create the container's
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// working directory if it does not exist. Some OCI runtimes do this by
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// default, but others do not.
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CreateWorkingDir bool `json:"createWorkingDir,omitempty"`
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// Secrets lists secrets to mount into the container
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Secrets []*ContainerSecret `json:"secrets,omitempty"`
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// SecretPath is the secrets location in storage
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SecretsPath string `json:"secretsPath"`
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// StorageOpts to be used when creating rootfs
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StorageOpts map[string]string `json:"storageOpts"`
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// Volatile specifies whether the container storage can be optimized
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// at the cost of not syncing all the dirty files in memory.
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Volatile bool `json:"volatile,omitempty"`
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// Passwd allows to user to override podman's passwd/group file setup
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Passwd *bool `json:"passwd,omitempty"`
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// ChrootDirs is an additional set of directories that need to be
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// treated as root directories. Standard bind mounts will be mounted
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// into paths relative to these directories.
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ChrootDirs []string `json:"chroot_directories,omitempty"`
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}
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// ContainerSecurityConfig is an embedded sub-config providing security configuration
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// to the container.
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type ContainerSecurityConfig struct {
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// Privileged is whether the container is privileged. Privileged
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// containers have lessened security and increased access to the system.
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// Note that this does NOT directly correspond to Podman's --privileged
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// flag - most of the work of that flag is done in creating the OCI spec
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// given to Libpod. This only enables a small subset of the overall
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// operation, mostly around mounting the container image with reduced
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// security.
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Privileged bool `json:"privileged"`
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// ProcessLabel is the SELinux process label for the container.
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ProcessLabel string `json:"ProcessLabel,omitempty"`
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// MountLabel is the SELinux mount label for the container's root
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// filesystem. Only used if the container was created from an image.
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// If not explicitly set, an unused random MLS label will be assigned by
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// containers/storage (but only if SELinux is enabled).
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MountLabel string `json:"MountLabel,omitempty"`
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// LabelOpts are options passed in by the user to set up SELinux labels.
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// These are used by the containers/storage library.
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LabelOpts []string `json:"labelopts,omitempty"`
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// User and group to use in the container. Can be specified as only user
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// (in which case we will attempt to look up the user in the container
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// to determine the appropriate group) or user and group separated by a
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// colon.
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// Can be specified by name or UID/GID.
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// If unset, this will default to UID and GID 0 (root).
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User string `json:"user,omitempty"`
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// Groups are additional groups to add the container's user to. These
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// are resolved within the container using the container's /etc/passwd.
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Groups []string `json:"groups,omitempty"`
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// HostUsers are a list of host user accounts to add to /etc/passwd
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HostUsers []string `json:"HostUsers,omitempty"`
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// AddCurrentUserPasswdEntry indicates that Libpod should ensure that
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// the container's /etc/passwd contains an entry for the user running
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// Libpod - mostly used in rootless containers where the user running
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// Libpod wants to retain their UID inside the container.
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AddCurrentUserPasswdEntry bool `json:"addCurrentUserPasswdEntry,omitempty"`
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// LabelNested, allow labeling separation from within a container
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LabelNested bool `json:"label_nested"`
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}
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// ContainerNameSpaceConfig is an embedded sub-config providing
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// namespace configuration to the container.
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type ContainerNameSpaceConfig struct {
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// IDs of container to share namespaces with
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// NetNsCtr conflicts with the CreateNetNS bool
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// These containers are considered dependencies of the given container
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// They must be started before the given container is started
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IPCNsCtr string `json:"ipcNsCtr,omitempty"`
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MountNsCtr string `json:"mountNsCtr,omitempty"`
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NetNsCtr string `json:"netNsCtr,omitempty"`
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PIDNsCtr string `json:"pidNsCtr,omitempty"`
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UserNsCtr string `json:"userNsCtr,omitempty"`
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UTSNsCtr string `json:"utsNsCtr,omitempty"`
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CgroupNsCtr string `json:"cgroupNsCtr,omitempty"`
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}
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// ContainerNetworkConfig is an embedded sub-config providing network configuration
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// to the container.
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type ContainerNetworkConfig struct {
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// CreateNetNS indicates that libpod should create and configure a new
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// network namespace for the container.
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// This cannot be set if NetNsCtr is also set.
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CreateNetNS bool `json:"createNetNS"`
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// StaticIP is a static IP to request for the container.
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// This cannot be set unless CreateNetNS is set.
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// If not set, the container will be dynamically assigned an IP by CNI.
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// Deprecated: Do no use this anymore, this is only for DB backwards compat.
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StaticIP net.IP `json:"staticIP,omitempty"`
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// StaticMAC is a static MAC to request for the container.
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// This cannot be set unless CreateNetNS is set.
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// If not set, the container will be dynamically assigned a MAC by CNI.
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// Deprecated: Do no use this anymore, this is only for DB backwards compat.
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StaticMAC types.HardwareAddr `json:"staticMAC,omitempty"`
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// PortMappings are the ports forwarded to the container's network
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// namespace
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// These are not used unless CreateNetNS is true
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PortMappings []types.PortMapping `json:"newPortMappings,omitempty"`
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// OldPortMappings are the ports forwarded to the container's network
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// namespace. As of podman 4.0 this field is deprecated, use PortMappings
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// instead. The db will convert the old ports to the new structure for you.
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// These are not used unless CreateNetNS is true
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OldPortMappings []types.OCICNIPortMapping `json:"portMappings,omitempty"`
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// ExposedPorts are the ports which are exposed but not forwarded
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// into the container.
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// The map key is the port and the string slice contains the protocols,
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// e.g. tcp and udp
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// These are only set when exposed ports are given but not published.
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ExposedPorts map[uint16][]string `json:"exposedPorts,omitempty"`
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// UseImageResolvConf indicates that resolv.conf should not be
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// bind-mounted inside the container.
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// Conflicts with DNSServer, DNSSearch, DNSOption.
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UseImageResolvConf bool
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// DNS servers to use in container resolv.conf
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// Will override servers in host resolv if set
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DNSServer []net.IP `json:"dnsServer,omitempty"`
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// DNS Search domains to use in container resolv.conf
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// Will override search domains in host resolv if set
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DNSSearch []string `json:"dnsSearch,omitempty"`
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// DNS options to be set in container resolv.conf
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// With override options in host resolv if set
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DNSOption []string `json:"dnsOption,omitempty"`
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// UseImageHosts indicates that /etc/hosts should not be
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// bind-mounted inside the container.
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// Conflicts with HostAdd.
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UseImageHosts bool
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// Hosts to add in container
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// Will be appended to host's host file
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HostAdd []string `json:"hostsAdd,omitempty"`
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// Network names with the network specific options.
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// Please note that these can be altered at runtime. The actual list is
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// stored in the DB and should be retrieved from there via c.networks()
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// this value is only used for container create.
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// Added in podman 4.0, previously NetworksDeprecated was used. Make
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// sure to not change the json tags.
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Networks map[string]types.PerNetworkOptions `json:"newNetworks,omitempty"`
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// Network names to add container to. Empty to use default network.
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// Please note that these can be altered at runtime. The actual list is
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// stored in the DB and should be retrieved from there; this is only the
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// set of networks the container was *created* with.
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// Deprecated: Do no use this anymore, this is only for DB backwards compat.
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// Also note that we need to keep the old json tag to decode from DB correctly
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NetworksDeprecated []string `json:"networks,omitempty"`
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// Network mode specified for the default network.
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NetMode namespaces.NetworkMode `json:"networkMode,omitempty"`
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// NetworkOptions are additional options for each network
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NetworkOptions map[string][]string `json:"network_options,omitempty"`
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}
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// ContainerImageConfig is an embedded sub-config providing image configuration
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// to the container.
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type ContainerImageConfig struct {
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// UserVolumes contains user-added volume mounts in the container.
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// These will not be added to the container's spec, as it is assumed
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// they are already present in the spec given to Libpod. Instead, it is
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// used when committing containers to generate the VOLUMES field of the
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// image that is created, and for triggering some OCI hooks which do not
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// fire unless user-added volume mounts are present.
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UserVolumes []string `json:"userVolumes,omitempty"`
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// Entrypoint is the container's entrypoint.
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// It is not used in spec generation, but will be used when the
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// container is committed to populate the entrypoint of the new image.
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Entrypoint []string `json:"entrypoint,omitempty"`
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// Command is the container's command.
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// It is not used in spec generation, but will be used when the
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// container is committed to populate the command of the new image.
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Command []string `json:"command,omitempty"`
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}
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// ContainerMiscConfig is an embedded sub-config providing misc configuration
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// to the container.
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type ContainerMiscConfig struct {
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// Whether to keep container STDIN open
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Stdin bool `json:"stdin,omitempty"`
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// Labels is a set of key-value pairs providing additional information
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// about a container
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Labels map[string]string `json:"labels,omitempty"`
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// StopSignal is the signal that will be used to stop the container
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StopSignal uint `json:"stopSignal,omitempty"`
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// StopTimeout is the signal that will be used to stop the container
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StopTimeout uint `json:"stopTimeout,omitempty"`
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// Timeout is maximum time a container will run before getting the kill signal
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Timeout uint `json:"timeout,omitempty"`
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// Time container was created
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CreatedTime time.Time `json:"createdTime"`
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// CgroupManager is the cgroup manager used to create this container.
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// If empty, the runtime default will be used.
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CgroupManager string `json:"cgroupManager,omitempty"`
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// NoCgroups indicates that the container will not create Cgroups. It is
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// incompatible with CgroupParent. Deprecated in favor of CgroupsMode.
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NoCgroups bool `json:"noCgroups,omitempty"`
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// CgroupsMode indicates how the container will create cgroups
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// (disabled, no-conmon, enabled). It supersedes NoCgroups.
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CgroupsMode string `json:"cgroupsMode,omitempty"`
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// Cgroup parent of the container.
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CgroupParent string `json:"cgroupParent"`
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// GroupEntry specifies arbitrary data to append to a file.
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GroupEntry string `json:"group_entry,omitempty"`
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// KubeExitCodePropagation of the service container.
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KubeExitCodePropagation define.KubeExitCodePropagation `json:"kubeExitCodePropagation"`
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// LogPath log location
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LogPath string `json:"logPath"`
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// LogTag is the tag used for logging
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LogTag string `json:"logTag"`
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// LogSize is the tag used for logging
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LogSize int64 `json:"logSize"`
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// LogDriver driver for logs
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LogDriver string `json:"logDriver"`
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// File containing the conmon PID
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ConmonPidFile string `json:"conmonPidFile,omitempty"`
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// RestartPolicy indicates what action the container will take upon
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// exiting naturally.
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// Allowed options are "no" (take no action), "on-failure" (restart on
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// non-zero exit code, up to a maximum of RestartRetries times),
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// and "always" (always restart the container on any exit code).
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// The empty string is treated as the default ("no")
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RestartPolicy string `json:"restart_policy,omitempty"`
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// RestartRetries indicates the number of attempts that will be made to
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// restart the container. Used only if RestartPolicy is set to
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// "on-failure".
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RestartRetries uint `json:"restart_retries,omitempty"`
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// PostConfigureNetNS needed when a user namespace is created by an OCI runtime
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// if the network namespace is created before the user namespace it will be
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// owned by the wrong user namespace.
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PostConfigureNetNS bool `json:"postConfigureNetNS"`
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// OCIRuntime used to create the container
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OCIRuntime string `json:"runtime,omitempty"`
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// IsInfra is a bool indicating whether this container is an infra container used for
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// sharing kernel namespaces in a pod
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IsInfra bool `json:"pause"`
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// IsService is a bool indicating whether this container is a service container used for
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// tracking the life cycle of K8s service.
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IsService bool `json:"isService"`
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// SdNotifyMode tells libpod what to do with a NOTIFY_SOCKET if passed
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SdNotifyMode string `json:"sdnotifyMode,omitempty"`
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// SdNotifySocket stores NOTIFY_SOCKET in use by the container
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SdNotifySocket string `json:"sdnotifySocket,omitempty"`
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// Systemd tells libpod to set up the container in systemd mode, a value of nil denotes false
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Systemd *bool `json:"systemd,omitempty"`
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// HealthCheckConfig has the health check command and related timings
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HealthCheckConfig *manifest.Schema2HealthConfig `json:"healthcheck"`
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// HealthCheckOnFailureAction defines an action to take once the container turns unhealthy.
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HealthCheckOnFailureAction define.HealthCheckOnFailureAction `json:"healthcheck_on_failure_action"`
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// StartupHealthCheckConfig is the configuration of the startup
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// healthcheck for the container. This will run before the regular HC
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// runs, and when it passes the regular HC will be activated.
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StartupHealthCheckConfig *define.StartupHealthCheck `json:"startupHealthCheck,omitempty"`
|
|
// PreserveFDs is a number of additional file descriptors (in addition
|
|
// to 0, 1, 2) that will be passed to the executed process. The total FDs
|
|
// passed will be 3 + PreserveFDs.
|
|
PreserveFDs uint `json:"preserveFds,omitempty"`
|
|
// Timezone is the timezone inside the container.
|
|
// Local means it has the same timezone as the host machine
|
|
Timezone string `json:"timezone,omitempty"`
|
|
// Umask is the umask inside the container.
|
|
Umask string `json:"umask,omitempty"`
|
|
// PidFile is the file that saves the pid of the container process
|
|
PidFile string `json:"pid_file,omitempty"`
|
|
// CDIDevices contains devices that use the CDI
|
|
CDIDevices []string `json:"cdiDevices,omitempty"`
|
|
// DeviceHostSrc contains the original source on the host
|
|
DeviceHostSrc []spec.LinuxDevice `json:"device_host_src,omitempty"`
|
|
// EnvSecrets are secrets that are set as environment variables
|
|
EnvSecrets map[string]*secrets.Secret `json:"secret_env,omitempty"`
|
|
// InitContainerType specifies if the container is an initcontainer
|
|
// and if so, what type: always or once are possible non-nil entries
|
|
InitContainerType string `json:"init_container_type,omitempty"`
|
|
// PasswdEntry specifies arbitrary data to append to a file.
|
|
PasswdEntry string `json:"passwd_entry,omitempty"`
|
|
// MountAllDevices is an option to indicate whether a privileged container
|
|
// will mount all the host's devices
|
|
MountAllDevices bool `json:"mountAllDevices"`
|
|
}
|
|
|
|
// InfraInherit contains the compatible options inheritable from the infra container
|
|
type InfraInherit struct {
|
|
ApparmorProfile string `json:"apparmor_profile,omitempty"`
|
|
CapAdd []string `json:"cap_add,omitempty"`
|
|
CapDrop []string `json:"cap_drop,omitempty"`
|
|
HostDeviceList []spec.LinuxDevice `json:"host_device_list,omitempty"`
|
|
ImageVolumes []*specgen.ImageVolume `json:"image_volumes,omitempty"`
|
|
Mounts []spec.Mount `json:"mounts,omitempty"`
|
|
NoNewPrivileges bool `json:"no_new_privileges,omitempty"`
|
|
OverlayVolumes []*specgen.OverlayVolume `json:"overlay_volumes,omitempty"`
|
|
SeccompPolicy string `json:"seccomp_policy,omitempty"`
|
|
SeccompProfilePath string `json:"seccomp_profile_path,omitempty"`
|
|
SelinuxOpts []string `json:"selinux_opts,omitempty"`
|
|
Volumes []*specgen.NamedVolume `json:"volumes,omitempty"`
|
|
ShmSize *int64 `json:"shm_size"`
|
|
ShmSizeSystemd *int64 `json:"shm_size_systemd"`
|
|
}
|
|
|
|
// IsDefaultShmSize determines if the user actually set the shm in the parent ctr or if it has been set to the default size
|
|
func (inherit *InfraInherit) IsDefaultShmSize() bool {
|
|
return inherit.ShmSize == nil || *inherit.ShmSize == 65536000
|
|
}
|