Merge pull request #6055 from baude/v2args

fix commands without input

cmd/podman/containers/attach.go

@@ -4,6 +4,7 @@ import (
 	"os"
 
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -17,12 +18,7 @@ var (
 		Short: "Attach to a running container",
 		Long:  attachDescription,
 		RunE:  attach,
-		Args: func(cmd *cobra.Command, args []string) error {
-			if len(args) > 1 || (len(args) == 0 && !cmd.Flag("latest").Changed) {
-				return errors.Errorf("attach requires the name or id of one running container or the latest flag")
-			}
-			return nil
-		},
+		Args:  validate.IdOrLatestArgs,
 		Example: `podman attach ctrID
   podman attach 1234
   podman attach --no-stdin foobar`,
@@ -33,6 +29,7 @@ var (
 		Short: attachCommand.Short,
 		Long:  attachCommand.Long,
 		RunE:  attachCommand.RunE,
+		Args:  validate.IdOrLatestArgs,
 		Example: `podman container attach ctrID
 	podman container attach 1234
 	podman container attach --no-stdin foobar`,

cmd/podman/containers/commit.go

@@ -30,6 +30,7 @@ var (
 	}
 
 	containerCommitCommand = &cobra.Command{
+		Args:  cobra.MinimumNArgs(1),
 		Use:   commitCommand.Use,
 		Short: commitCommand.Short,
 		Long:  commitCommand.Long,

cmd/podman/containers/create.go

@@ -33,6 +33,7 @@ var (
 	}
 
 	containerCreateCommand = &cobra.Command{
+		Args:  cobra.MinimumNArgs(1),
 		Use:   createCommand.Use,
 		Short: createCommand.Short,
 		Long:  createCommand.Long,

cmd/podman/containers/exec.go

@@ -16,20 +16,22 @@ var (
 	execDescription = `Execute the specified command inside a running container.
 `
 	execCommand = &cobra.Command{
-		Use:   "exec [flags] CONTAINER [COMMAND [ARG...]]",
-		Short: "Run a process in a running container",
-		Long:  execDescription,
-		RunE:  exec,
+		Use:                   "exec [flags] CONTAINER [COMMAND [ARG...]]",
+		Short:                 "Run a process in a running container",
+		Long:                  execDescription,
+		RunE:                  exec,
+		DisableFlagsInUseLine: true,
 		Example: `podman exec -it ctrID ls
   podman exec -it -w /tmp myCtr pwd
   podman exec --user root ctrID ls`,
 	}
 
 	containerExecCommand = &cobra.Command{
-		Use:   execCommand.Use,
-		Short: execCommand.Short,
-		Long:  execCommand.Long,
-		RunE:  execCommand.RunE,
+		Use:                   execCommand.Use,
+		Short:                 execCommand.Short,
+		Long:                  execCommand.Long,
+		RunE:                  execCommand.RunE,
+		DisableFlagsInUseLine: true,
 		Example: `podman container exec -it ctrID ls
   podman container exec -it -w /tmp myCtr pwd
   podman container exec --user root ctrID ls`,
@@ -79,6 +81,10 @@ func init() {
 
 func exec(cmd *cobra.Command, args []string) error {
 	var nameOrId string
+
+	if len(args) == 0 && !execOpts.Latest {
+		return errors.New("exec requires the name or ID of a container or the --latest flag")
+	}
 	execOpts.Cmd = args
 	if !execOpts.Latest {
 		execOpts.Cmd = args[1:]

cmd/podman/containers/export.go

@@ -28,6 +28,7 @@ var (
 	}
 
 	containerExportCommand = &cobra.Command{
+		Args:  cobra.MinimumNArgs(1),
 		Use:   exportCommand.Use,
 		Short: exportCommand.Short,
 		Long:  exportCommand.Long,

cmd/podman/containers/kill.go

@@ -30,6 +30,9 @@ var (
 	}
 
 	containerKillCommand = &cobra.Command{
+		Args: func(cmd *cobra.Command, args []string) error {
+			return parse.CheckAllLatestAndCIDFile(cmd, args, false, false)
+		},
 		Use:   killCommand.Use,
 		Short: killCommand.Short,
 		Long:  killCommand.Long,

cmd/podman/containers/rm.go

@@ -38,6 +38,9 @@ var (
 		Short: rmCommand.Use,
 		Long:  rmCommand.Long,
 		RunE:  rmCommand.RunE,
+		Args: func(cmd *cobra.Command, args []string) error {
+			return parse.CheckAllLatestAndCIDFile(cmd, args, false, true)
+		},
 		Example: `podman container rm imageID
   podman container rm mywebserver myflaskserver 860a4b23
   podman container rm --force --all

cmd/podman/containers/run.go

@@ -20,6 +20,7 @@ import (
 var (
 	runDescription = "Runs a command in a new container from the given image"
 	runCommand     = &cobra.Command{
+		Args:  cobra.MinimumNArgs(1),
 		Use:   "run [flags] IMAGE [COMMAND [ARG...]]",
 		Short: "Run a command in a new container",
 		Long:  runDescription,
@@ -30,6 +31,7 @@ var (
 	}
 
 	containerRunCommand = &cobra.Command{
+		Args:  cobra.MinimumNArgs(1),
 		Use:   runCommand.Use,
 		Short: runCommand.Short,
 		Long:  runCommand.Long,

cmd/podman/containers/stop.go

@@ -34,6 +34,9 @@ var (
 		Short: stopCommand.Short,
 		Long:  stopCommand.Long,
 		RunE:  stopCommand.RunE,
+		Args: func(cmd *cobra.Command, args []string) error {
+			return parse.CheckAllLatestAndCIDFile(cmd, args, false, true)
+		},
 		Example: `podman container stop ctrID
   podman container stop --latest
   podman container stop --time 2 mywebserver 6e534f14da9d`,

cmd/podman/containers/unmount.go

@@ -40,6 +40,9 @@ var (
 		Short: umountCommand.Short,
 		Long:  umountCommand.Long,
 		RunE:  umountCommand.RunE,
+		Args: func(cmd *cobra.Command, args []string) error {
+			return parse.CheckAllLatestAndCIDFile(cmd, args, false, false)
+		},
 		Example: `podman container umount ctrID
   podman container umount ctrID1 ctrID2 ctrID3
   podman container umount --all`,

cmd/podman/containers/wait.go

@@ -34,6 +34,7 @@ var (
 		Short: waitCommand.Short,
 		Long:  waitCommand.Long,
 		RunE:  waitCommand.RunE,
+		Args:  validate.IdOrLatestArgs,
 		Example: `podman container wait --latest
   podman container wait --interval 5000 ctrID
   podman container wait ctrID1 ctrID2`,

cmd/podman/images/pull.go

@@ -45,6 +45,7 @@ var (
 		Short: pullCmd.Short,
 		Long:  pullCmd.Long,
 		RunE:  pullCmd.RunE,
+		Args:  cobra.ExactArgs(1),
 		Example: `podman image pull imageName
   podman image pull fedora:latest`,
 	}

cmd/podman/login.go

@@ -19,7 +19,7 @@ type loginOptionsWrapper struct {
 var (
 	loginOptions = loginOptionsWrapper{}
 	loginCommand = &cobra.Command{
-		Use:   "login [flags] REGISTRY",
+		Use:   "login [flags] [REGISTRY]",
 		Short: "Login to a container registry",
 		Long:  "Login to a container registry on a specified server.",
 		RunE:  login,

cmd/podman/logout.go

@@ -14,7 +14,7 @@ import (
 var (
 	logoutOptions = auth.LogoutOptions{}
 	logoutCommand = &cobra.Command{
-		Use:   "logout [flags] REGISTRY",
+		Use:   "logout [flags] [REGISTRY]",
 		Short: "Logout of a container registry",
 		Long:  "Remove the cached username and password for the registry.",
 		RunE:  logout,

test/system/015-help.bats

@@ -55,11 +55,24 @@ function check_help() {
 
         # If usage has required arguments, try running without them
         if expr "$usage" : '.*\[flags\] [A-Z]' >/dev/null; then
-            if [ "$cmd" != "stats"]; then
-                dprint "podman $@ $cmd (without required args)"
-                run_podman 125 "$@" $cmd
-                is "$output" "Error:"
+            # Exceptions: these commands don't work rootless
+            if is_rootless; then
+                # "pause is not supported for rootless containers"
+                if [ "$cmd" = "pause" -o "$cmd" = "unpause" ]; then
+                    continue
+                fi
+                # "network rm" too
+                if [ "$@" = "network" -a "$cmd" = "rm" ]; then
+                    continue
+                fi
             fi
+
+            # The </dev/null protects us from 'podman login' which will
+            # try to read username/password from stdin.
+            dprint "podman $@ $cmd (without required args)"
+            run_podman 125 "$@" $cmd </dev/null
+            is "$output" "Error:.* \(require\|specif\|must\|provide\|need\|choose\|accepts\)" \
+               "'podman $@ $cmd' without required arg"
         fi
 
         count=$(expr $count + 1)