spiegel_podman/pkg/rootless/rootless_unsupported.go
Giuseppe Scrivano 791d53a214
rootless: use a pause process
use a pause process to keep the user and mount namespace alive.

The pause process is created immediately on reload, and all successive
Podman processes will refer to it for joining the user&mount
namespace.

This solves all the race conditions we had on joining the correct
namespaces using the conmon processes.

As a fallback if the join fails for any reason (e.g. the pause process
was killed), then we try to join the running containers as we were
doing before.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
2019-05-17 20:48:24 +02:00

33 lines
1.2 KiB
Go

// +build !linux
package rootless
import (
"github.com/pkg/errors"
)
// IsRootless returns false on all non-linux platforms
func IsRootless() bool {
return false
}
// BecomeRootInUserNS re-exec podman in a new userNS. It returns whether podman was re-executed
// into a new user namespace and the return code from the re-executed podman process.
// If podman was re-executed the caller needs to propagate the error code returned by the child
// process. It is a convenience function for BecomeRootInUserNSWithOpts with a default configuration.
func BecomeRootInUserNS(pausePid string) (bool, int, error) {
return false, -1, errors.New("this function is not supported on this os")
}
// GetRootlessUID returns the UID of the user in the parent userNS
func GetRootlessUID() int {
return -1
}
// JoinUserAndMountNS re-exec podman in a new userNS and join the user and mount
// namespace of the specified PID without looking up its parent. Useful to join directly
// the conmon process. It is a convenience function for JoinUserAndMountNSWithOpts
// with a default configuration.
func JoinUserAndMountNS(pid uint, pausePid string) (bool, int, error) {
return false, -1, errors.New("this function is not supported on this os")
}