mirror of
https://github.com/containers/podman.git
synced 2025-05-17 06:59:07 +08:00
72f1617fac
Moving from Go module v4 to v5 prepares us for public releases. Move done using gomove [1] as with the v3 and v4 moves. [1] https://github.com/KSubedi/gomove Signed-off-by: Matt Heon <mheon@redhat.com>
107 lines
3.3 KiB
Go
107 lines
3.3 KiB
Go
//go:build !remote && linux
|
|
|
|
package libpod
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/containers/common/libnetwork/slirp4netns"
|
|
"github.com/containers/common/libnetwork/types"
|
|
"github.com/containers/podman/v5/pkg/errorhandling"
|
|
"github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// setupSlirp4netns can be called in rootful as well as in rootless
|
|
func (r *Runtime) setupSlirp4netns(ctr *Container, netns string) error {
|
|
ports := ctr.convertPortMappings()
|
|
|
|
if !ctr.config.PostConfigureNetNS {
|
|
var err error
|
|
ctr.rootlessSlirpSyncR, ctr.rootlessSlirpSyncW, err = os.Pipe()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create rootless network sync pipe: %w", err)
|
|
}
|
|
if len(ports) > 0 {
|
|
ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create rootless port sync pipe: %w", err)
|
|
}
|
|
}
|
|
}
|
|
defer errorhandling.CloseQuiet(ctr.rootlessSlirpSyncR)
|
|
if ctr.rootlessPortSyncR != nil {
|
|
defer errorhandling.CloseQuiet(ctr.rootlessPortSyncR)
|
|
}
|
|
|
|
res, err := slirp4netns.Setup(&slirp4netns.SetupOptions{
|
|
Config: r.config,
|
|
ContainerID: ctr.ID(),
|
|
Netns: netns,
|
|
Ports: ports,
|
|
ExtraOptions: ctr.config.NetworkOptions[slirp4netns.BinaryName],
|
|
Slirp4netnsExitPipeR: ctr.rootlessSlirpSyncR,
|
|
RootlessPortExitPipeR: ctr.rootlessPortSyncR,
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
ctr.slirp4netnsSubnet = res.Subnet
|
|
return nil
|
|
}
|
|
|
|
func (r *Runtime) setupRootlessPortMappingViaRLK(ctr *Container, netnsPath string, netStatus map[string]types.StatusBlock) error {
|
|
var err error
|
|
if !ctr.config.PostConfigureNetNS {
|
|
ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create rootless port sync pipe: %w", err)
|
|
}
|
|
}
|
|
defer errorhandling.CloseQuiet(ctr.rootlessPortSyncR)
|
|
return slirp4netns.SetupRootlessPortMappingViaRLK(&slirp4netns.SetupOptions{
|
|
Config: r.config,
|
|
ContainerID: ctr.ID(),
|
|
Netns: netnsPath,
|
|
Ports: ctr.convertPortMappings(),
|
|
RootlessPortExitPipeR: ctr.rootlessPortSyncR,
|
|
}, nil, netStatus)
|
|
}
|
|
|
|
// reloadRootlessRLKPortMapping will trigger a reload for the port mappings in the rootlessport process.
|
|
// This should only be called by network connect/disconnect and only as rootless.
|
|
func (c *Container) reloadRootlessRLKPortMapping() error {
|
|
if len(c.config.PortMappings) == 0 {
|
|
return nil
|
|
}
|
|
childIP := slirp4netns.GetRootlessPortChildIP(nil, c.state.NetworkStatus)
|
|
logrus.Debugf("reloading rootless ports for container %s, childIP is %s", c.config.ID, childIP)
|
|
|
|
conn, err := openUnixSocket(filepath.Join(c.runtime.config.Engine.TmpDir, "rp", c.config.ID))
|
|
if err != nil {
|
|
return fmt.Errorf("could not reload rootless port mappings, port forwarding may no longer work correctly: %w", err)
|
|
}
|
|
defer conn.Close()
|
|
enc := json.NewEncoder(conn)
|
|
err = enc.Encode(childIP)
|
|
if err != nil {
|
|
return fmt.Errorf("port reloading failed: %w", err)
|
|
}
|
|
b, err := io.ReadAll(conn)
|
|
if err != nil {
|
|
return fmt.Errorf("port reloading failed: %w", err)
|
|
}
|
|
data := string(b)
|
|
if data != "OK" {
|
|
return fmt.Errorf("port reloading failed: %s", data)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getSlirp4netnsIP(subnet *net.IPNet) (*net.IP, error) {
|
|
return slirp4netns.GetIP(subnet)
|
|
}
|