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authorGiuseppe Scrivano <gscrivan@redhat.com>2019-05-16 16:31:08 +0200
committerGiuseppe Scrivano <gscrivan@redhat.com>2019-05-16 16:31:21 +0200
commit8b344065d2b9cc8c98b7b841d5d6845aca2f0ac3 (patch)
treed57fcce168591327a37500c3cc13a3e0bc9294f5 /cmd/podman
parent4b480240573be4cd8fe04505b6a435a6aa454f86 (diff)
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unshare: define CONTAINERS_GRAPHROOT and CONTAINERS_RUNROOT
define two environment variables, that simplify the task of cleaning up the storage, as we can do something like: podman unshare sh -c 'rm -rf $CONTAINERS_GRAPHROOT $CONTAINERS_RUNROOT' Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Diffstat (limited to 'cmd/podman')
-rw-r--r--cmd/podman/unshare.go42
1 files changed, 33 insertions, 9 deletions
diff --git a/cmd/podman/unshare.go b/cmd/podman/unshare.go
index b9ae8dd6b..4a4e371db 100644
--- a/cmd/podman/unshare.go
+++ b/cmd/podman/unshare.go
@@ -3,9 +3,13 @@
package main
import (
+ "fmt"
"os"
"os/exec"
+ "github.com/containers/libpod/cmd/podman/cliconfig"
+ "github.com/containers/libpod/cmd/podman/libpodruntime"
+ "github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
"github.com/pkg/errors"
"github.com/spf13/cobra"
@@ -17,39 +21,59 @@ var (
Use: "unshare [flags] [COMMAND [ARG]]",
Short: "Run a command in a modified user namespace",
Long: unshareDescription,
- RunE: unshareCmd,
+ RunE: func(cmd *cobra.Command, args []string) error {
+ unshareCommand.InputArgs = args
+ unshareCommand.GlobalFlags = MainGlobalOpts
+ return unshareCmd(&unshareCommand)
+ },
Example: `podman unshare id
podman unshare cat /proc/self/uid_map,
podman unshare podman-script.sh`,
}
+ unshareCommand cliconfig.PodmanCommand
)
func init() {
- _unshareCommand.SetUsageTemplate(UsageTemplate())
+ unshareCommand.Command = _unshareCommand
+ unshareCommand.SetHelpTemplate(HelpTemplate())
+ unshareCommand.SetUsageTemplate(UsageTemplate())
flags := _unshareCommand.Flags()
flags.SetInterspersed(false)
}
-func unshareEnv() []string {
- return append(os.Environ(), "_CONTAINERS_USERNS_CONFIGURED=done")
+func unshareEnv(config *libpod.RuntimeConfig) []string {
+ return append(os.Environ(), "_CONTAINERS_USERNS_CONFIGURED=done",
+ fmt.Sprintf("CONTAINERS_GRAPHROOT=%s", config.StorageConfig.GraphRoot),
+ fmt.Sprintf("CONTAINERS_RUNROOT=%s", config.StorageConfig.RunRoot))
}
// unshareCmd execs whatever using the ID mappings that we want to use for ourselves
-func unshareCmd(c *cobra.Command, args []string) error {
+func unshareCmd(c *cliconfig.PodmanCommand) 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 {
+ if len(c.InputArgs) < 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}
+ c.InputArgs = []string{shell}
+ }
+
+ runtime, err := libpodruntime.GetRuntime(getContext(), c)
+ if err != nil {
+ return err
}
- cmd := exec.Command(args[0], args[1:]...)
- cmd.Env = unshareEnv()
+ runtimeConfig, err := runtime.GetConfig()
+ if err != nil {
+ return err
+ }
+
+ cmd := exec.Command(c.InputArgs[0], c.InputArgs[1:]...)
+ cmd.Env = unshareEnv(runtimeConfig)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr