diff options
Diffstat (limited to 'pkg/netns')
-rw-r--r-- | pkg/netns/netns_linux.go | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/pkg/netns/netns_linux.go b/pkg/netns/netns_linux.go index 1d6fb873c..e8388055a 100644 --- a/pkg/netns/netns_linux.go +++ b/pkg/netns/netns_linux.go @@ -23,23 +23,42 @@ import ( "fmt" "os" "path" + "path/filepath" "runtime" "strings" "sync" "github.com/containernetworking/plugins/pkg/ns" + "github.com/containers/libpod/pkg/rootless" + "github.com/containers/libpod/pkg/util" "github.com/sirupsen/logrus" "golang.org/x/sys/unix" ) -const nsRunDir = "/var/run/netns" +// get NSRunDir returns the dir of where to create the netNS. When running +// rootless, it needs to be at a location writable by user. +func getNSRunDir() (string, error) { + if rootless.IsRootless() { + rootlessDir, err := util.GetRootlessRuntimeDir() + if err != nil { + return "", err + } + return filepath.Join(rootlessDir, "netns"), nil + } + return "/var/run/netns", nil +} // NewNS creates a new persistent (bind-mounted) network namespace and returns // an object representing that namespace, without switching to it. func NewNS() (ns.NetNS, error) { + nsRunDir, err := getNSRunDir() + if err != nil { + return nil, err + } + b := make([]byte, 16) - _, err := rand.Reader.Read(b) + _, err = rand.Reader.Read(b) if err != nil { return nil, fmt.Errorf("failed to generate random netns name: %v", err) } @@ -127,7 +146,7 @@ func NewNS() (ns.NetNS, error) { // Put this thread back to the orig ns, since it might get reused (pre go1.10) defer func() { if err := origNS.Set(); err != nil { - logrus.Errorf("unable to set namespace: %q", err) + logrus.Warnf("unable to set namespace: %q", err) } }() @@ -150,6 +169,11 @@ func NewNS() (ns.NetNS, error) { // UnmountNS unmounts the NS held by the netns object func UnmountNS(ns ns.NetNS) error { + nsRunDir, err := getNSRunDir() + if err != nil { + return err + } + nsPath := ns.Path() // Only unmount if it's been bind-mounted (don't touch namespaces in /proc...) if strings.HasPrefix(nsPath, nsRunDir) { |