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