podman rm/stop --cidfile

Add a --cidfile flag to podman rm/stop to pass a container ID via a
file.  Podman run already provides the functionaly to store the ID
in a specified file which we now complete with rm/stop.  This allows
for a better life-cycle management in systemd services.  Note that
--cdifile can be specified multiple times to rm/stop.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

20 files changed, 63 insertions, 36 deletions

diff --git a/cmd/podman/checkpoint.go b/cmd/podman/checkpoint.go
index 22cdb1f39..07db519f8 100644
--- a/cmd/podman/checkpoint.go
+++ b/cmd/podman/checkpoint.go
@@ -26,7 +26,7 @@ var (
 			return checkpointCmd(&checkpointCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman container checkpoint --keep ctrID
   podman container checkpoint --all
diff --git a/cmd/podman/cleanup.go b/cmd/podman/cleanup.go
index c00654162..a8bc0c116 100644
--- a/cmd/podman/cleanup.go
+++ b/cmd/podman/cleanup.go
@@ -27,7 +27,7 @@ var (
 			return cleanupCmd(&cleanupCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman container cleanup --latest
   podman container cleanup ctrID1 ctrID2 ctrID3
diff --git a/cmd/podman/cliconfig/config.go b/cmd/podman/cliconfig/config.go
index 780b68333..541b2e05d 100644
--- a/cmd/podman/cliconfig/config.go
+++ b/cmd/podman/cliconfig/config.go
@@ -480,11 +480,12 @@ type RestoreValues struct {
 
 type RmValues struct {
 	PodmanCommand
-	All     bool
-	Force   bool
-	Latest  bool
-	Storage bool
-	Volumes bool
+	All      bool
+	Force    bool
+	Latest   bool
+	Storage  bool
+	Volumes  bool
+	CIDFiles []string
 }
 
 type RmiValues struct {
@@ -557,9 +558,10 @@ type StatsValues struct {
 
 type StopValues struct {
 	PodmanCommand
-	All     bool
-	Latest  bool
-	Timeout uint
+	All      bool
+	Latest   bool
+	Timeout  uint
+	CIDFiles []string
 }
 
 type TopValues struct {
diff --git a/cmd/podman/common.go b/cmd/podman/common.go
index 4db043f31..442823d2d 100644
--- a/cmd/podman/common.go
+++ b/cmd/podman/common.go
@@ -39,24 +39,45 @@ func shortID(id string) string {
 	return id
 }
 
-// checkAllAndLatest checks that --all and --latest are used correctly
-func checkAllAndLatest(c *cobra.Command, args []string, ignoreArgLen bool) error {
+// checkAllLatestAndCIDFile checks that --all and --latest are used correctly.
+// If cidfile is set, also check for the --cidfile flag.
+func checkAllLatestAndCIDFile(c *cobra.Command, args []string, ignoreArgLen bool, cidfile bool) error {
 	argLen := len(args)
 	if c.Flags().Lookup("all") == nil || c.Flags().Lookup("latest") == nil {
-		return errors.New("unable to lookup values for 'latest' or 'all'")
+		if !cidfile {
+			return errors.New("unable to lookup values for 'latest' or 'all'")
+		} else if c.Flags().Lookup("cidfile") == nil {
+			return errors.New("unable to lookup values for 'latest', 'all' or 'cidfile'")
+		}
+	}
+
+	specifiedAll, _ := c.Flags().GetBool("all")
+	specifiedLatest, _ := c.Flags().GetBool("latest")
+	specifiedCIDFile := false
+	if cid, _ := c.Flags().GetStringArray("cidfile"); len(cid) > 0 {
+		specifiedCIDFile = true
 	}
-	all, _ := c.Flags().GetBool("all")
-	latest, _ := c.Flags().GetBool("latest")
-	if all && latest {
+
+	if specifiedCIDFile && (specifiedAll || specifiedLatest) {
+		return errors.Errorf("--all, --latest and --cidfile cannot be used together")
+	} else if specifiedAll && specifiedLatest {
 		return errors.Errorf("--all and --latest cannot be used together")
 	}
+
 	if ignoreArgLen {
 		return nil
 	}
-	if (all || latest) && argLen > 0 {
+	if (argLen > 0) && (specifiedAll || specifiedLatest) {
 		return errors.Errorf("no arguments are needed with --all or --latest")
+	} else if cidfile && (argLen > 0) && (specifiedAll || specifiedLatest || specifiedCIDFile) {
+		return errors.Errorf("no arguments are needed with --all, --latest or --cidfile")
 	}
-	if argLen < 1 && !all && !latest {
+
+	if specifiedCIDFile {
+		return nil
+	}
+
+	if argLen < 1 && !specifiedAll && !specifiedLatest && !specifiedCIDFile {
 		return errors.Errorf("you must provide at least one name or id")
 	}
 	return nil
diff --git a/cmd/podman/init.go b/cmd/podman/init.go
index 3f97824fc..2e0b33828 100644
--- a/cmd/podman/init.go
+++ b/cmd/podman/init.go
@@ -23,7 +23,7 @@ var (
 			return initCmd(&initCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman init --latest
   podman init 3c45ef19d893
diff --git a/cmd/podman/kill.go b/cmd/podman/kill.go
index d5056d86d..aba2008ca 100644
--- a/cmd/podman/kill.go
+++ b/cmd/podman/kill.go
@@ -24,7 +24,7 @@ var (
 			return killCmd(&killCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman kill mywebserver
   podman kill 860a4b23
diff --git a/cmd/podman/mount.go b/cmd/podman/mount.go
index b14827592..526a236fd 100644
--- a/cmd/podman/mount.go
+++ b/cmd/podman/mount.go
@@ -35,7 +35,7 @@ var (
 			return mountCmd(&mountCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, true)
+			return checkAllLatestAndCIDFile(cmd, args, true, false)
 		},
 	}
 )
diff --git a/cmd/podman/pod_kill.go b/cmd/podman/pod_kill.go
index 9bda77471..064946f72 100644
--- a/cmd/podman/pod_kill.go
+++ b/cmd/podman/pod_kill.go
@@ -28,7 +28,7 @@ var (
 			return podKillCmd(&podKillCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod kill podID
   podman pod kill --signal TERM mywebserver
diff --git a/cmd/podman/pod_pause.go b/cmd/podman/pod_pause.go
index 45e1319ff..320072919 100644
--- a/cmd/podman/pod_pause.go
+++ b/cmd/podman/pod_pause.go
@@ -25,7 +25,7 @@ var (
 			return podPauseCmd(&podPauseCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod pause podID1 podID2
   podman pod pause --latest
diff --git a/cmd/podman/pod_restart.go b/cmd/podman/pod_restart.go
index cc090bd6e..cb9f3770f 100644
--- a/cmd/podman/pod_restart.go
+++ b/cmd/podman/pod_restart.go
@@ -26,7 +26,7 @@ var (
 			return podRestartCmd(&podRestartCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod restart podID1 podID2
   podman pod restart --latest
diff --git a/cmd/podman/pod_rm.go b/cmd/podman/pod_rm.go
index 82d0eb977..86d6d2f27 100644
--- a/cmd/podman/pod_rm.go
+++ b/cmd/podman/pod_rm.go
@@ -26,7 +26,7 @@ var (
 			return podRmCmd(&podRmCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod rm mywebserverpod
   podman pod rm -f 860a4b23
diff --git a/cmd/podman/pod_start.go b/cmd/podman/pod_start.go
index 64c951b43..aa2e09e98 100644
--- a/cmd/podman/pod_start.go
+++ b/cmd/podman/pod_start.go
@@ -26,7 +26,7 @@ var (
 			return podStartCmd(&podStartCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod start podID
   podman pod start --latest
diff --git a/cmd/podman/pod_stop.go b/cmd/podman/pod_stop.go
index edda99550..579e4f1d3 100644
--- a/cmd/podman/pod_stop.go
+++ b/cmd/podman/pod_stop.go
@@ -27,7 +27,7 @@ var (
 			return podStopCmd(&podStopCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod stop mywebserverpod
   podman pod stop --latest
diff --git a/cmd/podman/pod_unpause.go b/cmd/podman/pod_unpause.go
index 833434c3f..1f80a7c79 100644
--- a/cmd/podman/pod_unpause.go
+++ b/cmd/podman/pod_unpause.go
@@ -26,7 +26,7 @@ var (
 			return podUnpauseCmd(&podUnpauseCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman pod unpause podID1 podID2
   podman pod unpause --all
diff --git a/cmd/podman/port.go b/cmd/podman/port.go
index 4e1f9642c..eef3d4b1d 100644
--- a/cmd/podman/port.go
+++ b/cmd/podman/port.go
@@ -26,7 +26,7 @@ var (
 			return portCmd(&portCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, true)
+			return checkAllLatestAndCIDFile(cmd, args, true, false)
 		},
 		Example: `podman port --all
   podman port ctrID 80/tcp
diff --git a/cmd/podman/restart.go b/cmd/podman/restart.go
index c97fb0dc1..996a9f7ce 100644
--- a/cmd/podman/restart.go
+++ b/cmd/podman/restart.go
@@ -23,7 +23,7 @@ var (
 			return restartCmd(&restartCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman restart ctrID
   podman restart --latest
diff --git a/cmd/podman/restore.go b/cmd/podman/restore.go
index caefadb6d..a8db7fa94 100644
--- a/cmd/podman/restore.go
+++ b/cmd/podman/restore.go
@@ -26,7 +26,7 @@ var (
 			return restoreCmd(&restoreCommand, cmd)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, true)
+			return checkAllLatestAndCIDFile(cmd, args, true, false)
 		},
 		Example: `podman container restore ctrID
   podman container restore --latest
diff --git a/cmd/podman/rm.go b/cmd/podman/rm.go
index 6329a9d8e..b3bc8e1b9 100644
--- a/cmd/podman/rm.go
+++ b/cmd/podman/rm.go
@@ -25,7 +25,7 @@ var (
 			return rmCmd(&rmCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, true)
 		},
 		Example: `podman rm imageID
   podman rm mywebserver myflaskserver 860a4b23
@@ -44,8 +44,10 @@ func init() {
 	flags.BoolVarP(&rmCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
 	flags.BoolVar(&rmCommand.Storage, "storage", false, "Remove container from storage library")
 	flags.BoolVarP(&rmCommand.Volumes, "volumes", "v", false, "Remove anonymous volumes associated with the container")
+	flags.StringArrayVarP(&rmCommand.CIDFiles, "cidfile", "", nil, "Read the container ID from the file")
 	markFlagHiddenForRemoteClient("storage", flags)
 	markFlagHiddenForRemoteClient("latest", flags)
+	markFlagHiddenForRemoteClient("cidfile", flags)
 }
 
 // rmCmd removes one or more containers
@@ -58,8 +60,8 @@ func rmCmd(c *cliconfig.RmValues) error {
 
 	// Storage conflicts with --all/--latest/--volumes
 	if c.Storage {
-		if c.All || c.Latest || c.Volumes {
-			return errors.Errorf("--storage conflicts with --volumes, --all, and --latest")
+		if c.All || c.Latest || c.Volumes || c.CIDFiles != nil {
+			return errors.Errorf("--storage conflicts with --volumes, --all, --latest and --cidfile")
 		}
 	}
 
diff --git a/cmd/podman/stop.go b/cmd/podman/stop.go
index e04d8a12b..acecb298e 100644
--- a/cmd/podman/stop.go
+++ b/cmd/podman/stop.go
@@ -25,7 +25,7 @@ var (
 			return stopCmd(&stopCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, true)
 		},
 		Example: `podman stop ctrID
   podman stop --latest
@@ -42,7 +42,9 @@ func init() {
 	flags.BoolVarP(&stopCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
 	flags.UintVar(&stopCommand.Timeout, "time", define.CtrRemoveTimeout, "Seconds to wait for stop before killing the container")
 	flags.UintVarP(&stopCommand.Timeout, "timeout", "t", define.CtrRemoveTimeout, "Seconds to wait for stop before killing the container")
+	flags.StringArrayVarP(&stopCommand.CIDFiles, "cidfile", "", nil, "Read the container ID from the file")
 	markFlagHiddenForRemoteClient("latest", flags)
+	markFlagHiddenForRemoteClient("cidfile", flags)
 }
 
 // stopCmd stops a container or containers
diff --git a/cmd/podman/umount.go b/cmd/podman/umount.go
index c3d81d3a8..6ad485c2c 100644
--- a/cmd/podman/umount.go
+++ b/cmd/podman/umount.go
@@ -28,7 +28,7 @@ var (
 			return umountCmd(&umountCommand)
 		},
 		Args: func(cmd *cobra.Command, args []string) error {
-			return checkAllAndLatest(cmd, args, false)
+			return checkAllLatestAndCIDFile(cmd, args, false, false)
 		},
 		Example: `podman umount ctrID
   podman umount ctrID1 ctrID2 ctrID3