mirror of
https://github.com/openfaas/faasd.git
synced 2025-06-11 09:26:47 +00:00
42e9c91ee9
This patch completes part of the work in #20 by porting the code for faas-containerd in-tree. When tested, I was able to deploy and then remove figlet from the store on `x86_64`. In a follow-up PR, duplication will be removed where possible and consolidated with updated documentation. Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
67 lines
1.2 KiB
Go
67 lines
1.2 KiB
Go
// +build go1.10
|
|
|
|
// Copyright Weaveworks
|
|
// github.com/weaveworks/weave/net
|
|
|
|
package handlers
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"path/filepath"
|
|
"runtime"
|
|
|
|
"github.com/vishvananda/netlink"
|
|
"github.com/vishvananda/netns"
|
|
)
|
|
|
|
var ErrLinkNotFound = errors.New("Link not found")
|
|
|
|
func WithNetNS(ns netns.NsHandle, work func() error) error {
|
|
runtime.LockOSThread()
|
|
defer runtime.UnlockOSThread()
|
|
|
|
oldNs, err := netns.Get()
|
|
if err == nil {
|
|
defer oldNs.Close()
|
|
|
|
err = netns.Set(ns)
|
|
if err == nil {
|
|
defer netns.Set(oldNs)
|
|
|
|
err = work()
|
|
}
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func WithNetNSLink(ns netns.NsHandle, ifName string, work func(link netlink.Link) error) error {
|
|
return WithNetNS(ns, func() error {
|
|
link, err := netlink.LinkByName(ifName)
|
|
if err != nil {
|
|
if err.Error() == errors.New("Link not found").Error() {
|
|
return ErrLinkNotFound
|
|
}
|
|
return err
|
|
}
|
|
return work(link)
|
|
})
|
|
}
|
|
|
|
func WithNetNSByPath(path string, work func() error) error {
|
|
ns, err := netns.GetFromPath(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return WithNetNS(ns, work)
|
|
}
|
|
|
|
func NSPathByPid(pid int) string {
|
|
return NSPathByPidWithRoot("/", pid)
|
|
}
|
|
|
|
func NSPathByPidWithRoot(root string, pid int) string {
|
|
return filepath.Join(root, fmt.Sprintf("/proc/%d/ns/net", pid))
|
|
}
|