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https://github.com/podman-container-tools/podman.git
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52371057cd
in cases where commands require input and we dont provide it, we often would segv. This can be attributed in many cases to the subcommand not picked up the cobra Args attribute or neither had them. Signed-off-by: baude <bbaude@redhat.com>
78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
package containers
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import (
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"context"
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"os"
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"github.com/containers/libpod/cmd/podman/parse"
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"github.com/containers/libpod/cmd/podman/registry"
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"github.com/containers/libpod/pkg/domain/entities"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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"golang.org/x/crypto/ssh/terminal"
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)
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var (
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exportDescription = "Exports container's filesystem contents as a tar archive" +
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" and saves it on the local machine."
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exportCommand = &cobra.Command{
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Use: "export [flags] CONTAINER",
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Short: "Export container's filesystem contents as a tar archive",
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Long: exportDescription,
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RunE: export,
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Args: cobra.ExactArgs(1),
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Example: `podman export ctrID > myCtr.tar
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podman export --output="myCtr.tar" ctrID`,
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}
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containerExportCommand = &cobra.Command{
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Args: cobra.MinimumNArgs(1),
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Use: exportCommand.Use,
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Short: exportCommand.Short,
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Long: exportCommand.Long,
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RunE: exportCommand.RunE,
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Example: `podman container export ctrID > myCtr.tar
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podman container export --output="myCtr.tar" ctrID`,
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}
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)
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var (
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exportOpts entities.ContainerExportOptions
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)
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func exportFlags(flags *pflag.FlagSet) {
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flags.StringVarP(&exportOpts.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)")
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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, entities.TunnelMode},
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Command: exportCommand,
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})
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flags := exportCommand.Flags()
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exportFlags(flags)
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
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Command: containerExportCommand,
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Parent: containerCmd,
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})
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containerExportFlags := containerExportCommand.Flags()
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exportFlags(containerExportFlags)
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}
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func export(cmd *cobra.Command, args []string) error {
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if len(exportOpts.Output) == 0 {
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file := os.Stdout
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if terminal.IsTerminal(int(file.Fd())) {
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return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
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}
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exportOpts.Output = "/dev/stdout"
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} else if err := parse.ValidateFileName(exportOpts.Output); err != nil {
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return err
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}
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return registry.ContainerEngine().ContainerExport(context.Background(), args[0], exportOpts)
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}
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