54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
package system
|
|
|
|
import (
|
|
"os"
|
|
|
|
"github.com/containers/common/pkg/completion"
|
|
"github.com/containers/podman/v2/cmd/podman/registry"
|
|
"github.com/containers/podman/v2/pkg/domain/entities"
|
|
"github.com/containers/podman/v2/pkg/rootless"
|
|
"github.com/pkg/errors"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
var (
|
|
unshareDescription = "Runs a command in a modified user namespace."
|
|
unshareCommand = &cobra.Command{
|
|
Use: "unshare [COMMAND [ARG ...]]",
|
|
DisableFlagsInUseLine: true,
|
|
Short: "Run a command in a modified user namespace",
|
|
Long: unshareDescription,
|
|
RunE: unshare,
|
|
ValidArgsFunction: completion.AutocompleteDefault,
|
|
Example: `podman unshare id
|
|
podman unshare cat /proc/self/uid_map,
|
|
podman unshare podman-script.sh`,
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
registry.Commands = append(registry.Commands, registry.CliCommand{
|
|
Mode: []entities.EngineMode{entities.ABIMode},
|
|
Command: unshareCommand,
|
|
})
|
|
flags := unshareCommand.Flags()
|
|
flags.SetInterspersed(false)
|
|
}
|
|
|
|
func unshare(cmd *cobra.Command, args []string) error {
|
|
if isRootless := rootless.IsRootless(); !isRootless {
|
|
return errors.Errorf("please use unshare with rootless")
|
|
}
|
|
// exec the specified command, if there is one
|
|
if len(args) < 1 {
|
|
// try to exec the shell, if one's set
|
|
shell, shellSet := os.LookupEnv("SHELL")
|
|
if !shellSet {
|
|
return errors.Errorf("no command specified and no $SHELL specified")
|
|
}
|
|
args = []string{shell}
|
|
}
|
|
|
|
return registry.ContainerEngine().Unshare(registry.Context(), args)
|
|
}
|