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Diffstat (limited to 'pkg/netns')
-rw-r--r--pkg/netns/netns_linux.go26
1 files changed, 15 insertions, 11 deletions
diff --git a/pkg/netns/netns_linux.go b/pkg/netns/netns_linux.go
index 0b7d1782c..ecefb65ff 100644
--- a/pkg/netns/netns_linux.go
+++ b/pkg/netns/netns_linux.go
@@ -35,9 +35,9 @@ import (
"golang.org/x/sys/unix"
)
-// get NSRunDir returns the dir of where to create the netNS. When running
+// GetNSRunDir 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) {
+func GetNSRunDir() (string, error) {
if rootless.IsRootless() {
rootlessDir, err := util.GetRuntimeDir()
if err != nil {
@@ -51,15 +51,21 @@ func getNSRunDir() (string, error) {
// 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()
+ b := make([]byte, 16)
+ _, err := rand.Reader.Read(b)
if err != nil {
- return nil, err
+ return nil, fmt.Errorf("failed to generate random netns name: %v", err)
}
+ nsName := fmt.Sprintf("cni-%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
+ return NewNSWithName(nsName)
+}
- b := make([]byte, 16)
- _, err = rand.Reader.Read(b)
+// NewNSWithName creates a new persistent (bind-mounted) network namespace and returns
+// an object representing that namespace, without switching to it.
+func NewNSWithName(name string) (ns.NetNS, error) {
+ nsRunDir, err := GetNSRunDir()
if err != nil {
- return nil, fmt.Errorf("failed to generate random netns name: %v", err)
+ return nil, err
}
// Create the directory for mounting network namespaces
@@ -93,10 +99,8 @@ func NewNS() (ns.NetNS, error) {
}
}
- nsName := fmt.Sprintf("cni-%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
-
// create an empty file at the mount point
- nsPath := path.Join(nsRunDir, nsName)
+ nsPath := path.Join(nsRunDir, name)
mountPointFd, err := os.Create(nsPath)
if err != nil {
return nil, err
@@ -177,7 +181,7 @@ func NewNS() (ns.NetNS, error) {
// UnmountNS unmounts the NS held by the netns object
func UnmountNS(ns ns.NetNS) error {
- nsRunDir, err := getNSRunDir()
+ nsRunDir, err := GetNSRunDir()
if err != nil {
return err
}