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-rw-r--r--cmd/podman/networks/create.go3
-rw-r--r--cmd/podman/networks/inspect.go3
-rw-r--r--cmd/podman/networks/list.go3
-rw-r--r--cmd/podman/networks/rm.go3
-rw-r--r--contrib/rootless-cni-infra/Containerfile35
-rw-r--r--contrib/rootless-cni-infra/README.md22
-rwxr-xr-xcontrib/rootless-cni-infra/rootless-cni-infra147
-rw-r--r--libpod/container_internal.go4
-rw-r--r--libpod/container_internal_linux.go14
-rw-r--r--libpod/container_validate.go11
-rw-r--r--libpod/networking_linux.go24
-rw-r--r--libpod/networking_unsupported.go4
-rw-r--r--libpod/oci_conmon_linux.go4
-rw-r--r--libpod/rootless_cni_linux.go320
-rw-r--r--libpod/runtime_ctr.go4
-rw-r--r--pkg/domain/infra/abi/network.go4
-rw-r--r--pkg/network/files.go13
-rw-r--r--rootless.md3
-rw-r--r--test/e2e/common_test.go6
-rw-r--r--test/e2e/network_create_test.go2
-rw-r--r--test/e2e/network_test.go24
21 files changed, 605 insertions, 48 deletions
diff --git a/cmd/podman/networks/create.go b/cmd/podman/networks/create.go
index dabf6f0d2..68a577ae1 100644
--- a/cmd/podman/networks/create.go
+++ b/cmd/podman/networks/create.go
@@ -21,9 +21,6 @@ var (
RunE: networkCreate,
Args: cobra.MaximumNArgs(1),
Example: `podman network create podman1`,
- Annotations: map[string]string{
- registry.ParentNSRequired: "",
- },
}
)
diff --git a/cmd/podman/networks/inspect.go b/cmd/podman/networks/inspect.go
index f00d6b63c..c5872def7 100644
--- a/cmd/podman/networks/inspect.go
+++ b/cmd/podman/networks/inspect.go
@@ -22,9 +22,6 @@ var (
RunE: networkInspect,
Example: `podman network inspect podman`,
Args: cobra.MinimumNArgs(1),
- Annotations: map[string]string{
- registry.ParentNSRequired: "",
- },
}
)
diff --git a/cmd/podman/networks/list.go b/cmd/podman/networks/list.go
index 3a2651cbc..b6fb2bb80 100644
--- a/cmd/podman/networks/list.go
+++ b/cmd/podman/networks/list.go
@@ -25,9 +25,6 @@ var (
Long: networklistDescription,
RunE: networkList,
Example: `podman network list`,
- Annotations: map[string]string{
- registry.ParentNSRequired: "",
- },
}
)
diff --git a/cmd/podman/networks/rm.go b/cmd/podman/networks/rm.go
index dfbb5d081..ac49993b7 100644
--- a/cmd/podman/networks/rm.go
+++ b/cmd/podman/networks/rm.go
@@ -19,9 +19,6 @@ var (
RunE: networkRm,
Example: `podman network rm podman`,
Args: cobra.MinimumNArgs(1),
- Annotations: map[string]string{
- registry.ParentNSRequired: "",
- },
}
)
diff --git a/contrib/rootless-cni-infra/Containerfile b/contrib/rootless-cni-infra/Containerfile
new file mode 100644
index 000000000..c5d812a6e
--- /dev/null
+++ b/contrib/rootless-cni-infra/Containerfile
@@ -0,0 +1,35 @@
+ARG GOLANG_VERSION=1.15
+ARG ALPINE_VERSION=3.12
+ARG CNI_VERSION=v0.8.0
+ARG CNI_PLUGINS_VERSION=v0.8.7
+# Aug 20, 2020
+ARG DNSNAME_VESION=78b4da7bbfc51c27366da630e1df1c4f2e8b1b5b
+
+FROM golang:${GOLANG_VERSION}-alpine${ALPINE_VERSION} AS golang-base
+RUN apk add --no-cache git
+
+FROM golang-base AS cnitool
+RUN git clone https://github.com/containernetworking/cni /go/src/github.com/containernetworking/cni
+WORKDIR /go/src/github.com/containernetworking/cni
+ARG CNI_VERSION
+RUN git checkout ${CNI_VERSION}
+RUN go build -o /cnitool ./cnitool
+
+FROM golang-base AS dnsname
+RUN git clone https://github.com/containers/dnsname /go/src/github.com/containers/dnsname
+WORKDIR /go/src/github.com/containers/dnsname
+ARG DNSNAME_VERSION
+RUN git checkout ${DNSNAME_VERSION}
+RUN go build -o /dnsname ./plugins/meta/dnsname
+
+FROM alpine:${ALPINE_VERSION}
+RUN apk add --no-cache curl dnsmasq iptables ip6tables iproute2
+ARG TARGETARCH
+ARG CNI_PLUGINS_VERSION
+RUN mkdir -p /opt/cni/bin && \
+ curl -fsSL https://github.com/containernetworking/plugins/releases/download/${CNI_PLUGINS_VERSION}/cni-plugins-linux-${TARGETARCH}-${CNI_PLUGINS_VERSION}.tgz | tar xz -C /opt/cni/bin
+COPY --from=cnitool /cnitool /usr/local/bin
+COPY --from=dnsname /dnsname /opt/cni/bin
+COPY rootless-cni-infra /usr/local/bin
+ENV CNI_PATH=/opt/cni/bin
+CMD ["sleep", "infinity"]
diff --git a/contrib/rootless-cni-infra/README.md b/contrib/rootless-cni-infra/README.md
new file mode 100644
index 000000000..937e057fb
--- /dev/null
+++ b/contrib/rootless-cni-infra/README.md
@@ -0,0 +1,22 @@
+# rootless-cni-infra
+
+Infra container for CNI-in-slirp4netns.
+
+## How it works
+
+When a CNI network is specified for `podman run` in rootless mode, Podman launches the `rootless-cni-infra` container to execute CNI plugins inside slirp4netns.
+
+The infra container is created per user, by executing an equivalent of:
+`podman run -d --name rootless-cni-infra --pid=host --privileged -v $HOME/.config/cni/net.d:/etc/cni/net.d rootless-cni-infra`.
+The infra container is automatically deleted when no CNI network is in use.
+
+Podman then allocates a CNI netns in the infra container, by executing an equivalent of:
+`podman exec rootless-cni-infra rootless-cni-infra alloc $CONTAINER_ID $NETWORK_NAME $POD_NAME`.
+
+The allocated netns is deallocated when the container is being removed, by executing an equivalent of:
+`podman exec rootless-cni-infra rootless-cni-infra dealloc $CONTAINER_ID $NETWORK_NAME`.
+
+## Directory layout
+
+* `/run/rootless-cni-infra/${CONTAINER_ID}/pid`: PID of the `sleep infinity` process that corresponds to the allocated netns
+* `/run/rootless-cni-infra/${CONTAINER_ID}/attached/${NETWORK_NAME}`: CNI result
diff --git a/contrib/rootless-cni-infra/rootless-cni-infra b/contrib/rootless-cni-infra/rootless-cni-infra
new file mode 100755
index 000000000..5a574d2eb
--- /dev/null
+++ b/contrib/rootless-cni-infra/rootless-cni-infra
@@ -0,0 +1,147 @@
+#!/bin/sh
+set -eu
+
+ARG0="$0"
+VERSION="0.1.0"
+BASE="/run/rootless-cni-infra"
+
+# CLI subcommand: "alloc $CONTAINER_ID $NETWORK_NAME $POD_NAME"
+cmd_entrypoint_alloc() {
+ if [ "$#" -ne 3 ]; then
+ echo >&2 "Usage: $ARG0 alloc CONTAINER_ID NETWORK_NAME POD_NAME"
+ exit 1
+ fi
+
+ ID="$1"
+ NET="$2"
+ K8S_POD_NAME="$3"
+
+ dir="${BASE}/${ID}"
+ mkdir -p "${dir}/attached"
+
+ pid=""
+ if [ -f "${dir}/pid" ]; then
+ pid=$(cat "${dir}/pid")
+ else
+ unshare -n sleep infinity &
+ pid="$!"
+ echo "${pid}" >"${dir}/pid"
+ nsenter -t "${pid}" -n ip link set lo up
+ fi
+ CNI_ARGS="IgnoreUnknown=1;K8S_POD_NAME=${K8S_POD_NAME}"
+ nwcount=$(find "${dir}/attached" -type f | wc -l)
+ CNI_IFNAME="eth${nwcount}"
+ export CNI_ARGS CNI_IFNAME
+ cnitool add "${NET}" "/proc/${pid}/ns/net" >"${dir}/attached/${NET}"
+
+ # return the result
+ ns="/proc/${pid}/ns/net"
+ echo "{\"ns\":\"${ns}\"}"
+}
+
+# CLI subcommand: "dealloc $CONTAINER_ID $NETWORK_NAME"
+cmd_entrypoint_dealloc() {
+ if [ "$#" -ne 2 ]; then
+ echo >&2 "Usage: $ARG0 dealloc CONTAINER_ID NETWORK_NAME"
+ exit 1
+ fi
+
+ ID=$1
+ NET=$2
+
+ dir="${BASE}/${ID}"
+ if [ ! -f "${dir}/pid" ]; then
+ exit 0
+ fi
+ pid=$(cat "${dir}/pid")
+ cnitool del "${NET}" "/proc/${pid}/ns/net"
+ rm -f "${dir}/attached/${NET}"
+
+ nwcount=$(find "${dir}/attached" -type f | wc -l)
+ if [ "${nwcount}" = 0 ]; then
+ kill -9 "${pid}"
+ rm -rf "${dir}"
+ fi
+
+ # return empty json
+ echo "{}"
+}
+
+# CLI subcommand: "is-idle"
+cmd_entrypoint_is_idle() {
+ if [ ! -d ${BASE} ]; then
+ echo '{"idle": true}'
+ elif [ -z "$(ls -1 ${BASE})" ]; then
+ echo '{"idle": true}'
+ else
+ echo '{"idle": false}'
+ fi
+}
+
+# CLI subcommand: "print-cni-result $CONTAINER_ID $NETWORK_NAME"
+cmd_entrypoint_print_cni_result() {
+ if [ "$#" -ne 2 ]; then
+ echo >&2 "Usage: $ARG0 print-cni-result CONTAINER_ID NETWORK_NAME"
+ exit 1
+ fi
+
+ ID=$1
+ NET=$2
+
+ # the result shall be CNI JSON
+ cat "${BASE}/${ID}/attached/${NET}"
+}
+
+# CLI subcommand: "print-netns-path $CONTAINER_ID"
+cmd_entrypoint_print_netns_path() {
+ if [ "$#" -ne 1 ]; then
+ echo >&2 "Usage: $ARG0 print-netns-path CONTAINER_ID"
+ exit 1
+ fi
+
+ ID=$1
+
+ pid=$(cat "${BASE}/${ID}/pid")
+ path="/proc/${pid}/ns/net"
+
+ # return the result
+ echo "{\"path\":\"${path}\"}"
+}
+
+# CLI subcommand: "help"
+cmd_entrypoint_help() {
+ echo "Usage: ${ARG0} COMMAND"
+ echo
+ echo "Rootless CNI Infra container"
+ echo
+ echo "Commands:"
+ echo " alloc Allocate a netns"
+ echo " dealloc Deallocate a netns"
+ echo " is-idle Print whether the infra container is idle"
+ echo " print-cni-result Print CNI result"
+ echo " print-netns-path Print netns path"
+ echo " help Print help"
+ echo " version Print version"
+}
+
+# CLI subcommand: "version"
+cmd_entrypoint_version() {
+ echo "{\"version\": \"${VERSION}\"}"
+}
+
+# parse args
+command="${1:-}"
+if [ -z "$command" ]; then
+ echo >&2 "No command was specified. Run \`${ARG0} help\` to see the usage."
+ exit 1
+fi
+
+command_func=$(echo "cmd_entrypoint_${command}" | sed -e "s/-/_/g")
+if ! command -v "${command_func}" >/dev/null 2>&1; then
+ echo >&2 "Unknown command: ${command}. Run \`${ARG0} help\` to see the usage."
+ exit 1
+fi
+
+# start the command func
+shift
+"${command_func}" "$@"
diff --git a/libpod/container_internal.go b/libpod/container_internal.go
index c41d81a2b..c3f07a48b 100644
--- a/libpod/container_internal.go
+++ b/libpod/container_internal.go
@@ -957,8 +957,10 @@ func (c *Container) completeNetworkSetup() error {
if err := c.syncContainer(); err != nil {
return err
}
- if c.config.NetMode.IsSlirp4netns() {
+ if rootless.IsRootless() {
return c.runtime.setupRootlessNetNS(c)
+ } else if c.config.NetMode.IsSlirp4netns() {
+ return c.runtime.setupSlirp4netns(c)
}
if err := c.runtime.setupNetNS(c); err != nil {
return err
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index f789b0069..605b526a4 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -84,7 +84,11 @@ func (c *Container) prepare() error {
// Set up network namespace if not already set up
noNetNS := c.state.NetNS == nil
if c.config.CreateNetNS && noNetNS && !c.config.PostConfigureNetNS {
- netNS, networkStatus, createNetNSErr = c.runtime.createNetNS(c)
+ if rootless.IsRootless() && len(c.config.Networks) > 0 {
+ netNS, networkStatus, createNetNSErr = AllocRootlessCNI(context.Background(), c)
+ } else {
+ netNS, networkStatus, createNetNSErr = c.runtime.createNetNS(c)
+ }
if createNetNSErr != nil {
return
}
@@ -98,8 +102,12 @@ func (c *Container) prepare() error {
}
// handle rootless network namespace setup
- if noNetNS && c.config.NetMode.IsSlirp4netns() && !c.config.PostConfigureNetNS {
- createNetNSErr = c.runtime.setupRootlessNetNS(c)
+ if noNetNS && !c.config.PostConfigureNetNS {
+ if rootless.IsRootless() {
+ createNetNSErr = c.runtime.setupRootlessNetNS(c)
+ } else if c.config.NetMode.IsSlirp4netns() {
+ createNetNSErr = c.runtime.setupSlirp4netns(c)
+ }
}
}()
// Mount storage if not mounted
diff --git a/libpod/container_validate.go b/libpod/container_validate.go
index d657e3549..b78168cd1 100644
--- a/libpod/container_validate.go
+++ b/libpod/container_validate.go
@@ -2,7 +2,6 @@ package libpod
import (
"github.com/containers/podman/v2/libpod/define"
- "github.com/containers/podman/v2/pkg/rootless"
spec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
)
@@ -68,16 +67,6 @@ func (c *Container) validate() error {
}
}
- // Rootless has some requirements, compared to networks.
- if rootless.IsRootless() {
- if len(c.config.Networks) > 0 {
- return errors.Wrapf(define.ErrInvalidArg, "cannot join CNI networks if running rootless")
- }
-
- // TODO: Should we make sure network mode is set to Slirp if set
- // at all?
- }
-
// Can only set static IP or MAC is creating a network namespace.
if !c.config.CreateNetNS && (c.config.StaticIP != nil || c.config.StaticMAC != nil) {
return errors.Wrapf(define.ErrInvalidArg, "cannot set static IP or MAC address if not creating a network namespace")
diff --git a/libpod/networking_linux.go b/libpod/networking_linux.go
index 6f266e5d6..c0508ce39 100644
--- a/libpod/networking_linux.go
+++ b/libpod/networking_linux.go
@@ -4,6 +4,7 @@ package libpod
import (
"bytes"
+ "context"
"crypto/rand"
"fmt"
"io"
@@ -208,6 +209,20 @@ func checkSlirpFlags(path string) (*slirpFeatures, error) {
// Configure the network namespace for a rootless container
func (r *Runtime) setupRootlessNetNS(ctr *Container) error {
+ if ctr.config.NetMode.IsSlirp4netns() {
+ return r.setupSlirp4netns(ctr)
+ }
+ if len(ctr.config.Networks) > 0 {
+ // set up port forwarder for CNI-in-slirp4netns
+ netnsPath := ctr.state.NetNS.Path()
+ // TODO: support slirp4netns port forwarder as well
+ return r.setupRootlessPortMappingViaRLK(ctr, netnsPath)
+ }
+ return nil
+}
+
+// setupSlirp4netns can be called in rootful as well as in rootless
+func (r *Runtime) setupSlirp4netns(ctr *Container) error {
path := r.config.Engine.NetworkCmdPath
if path == "" {
@@ -711,7 +726,7 @@ func (r *Runtime) teardownNetNS(ctr *Container) error {
logrus.Debugf("Tearing down network namespace at %s for container %s", ctr.state.NetNS.Path(), ctr.ID())
- // rootless containers do not use the CNI plugin
+ // rootless containers do not use the CNI plugin directly
if !rootless.IsRootless() && !ctr.config.NetMode.IsSlirp4netns() {
var requestedIP net.IP
if ctr.requestedIP != nil {
@@ -738,6 +753,13 @@ func (r *Runtime) teardownNetNS(ctr *Container) error {
}
}
+ // CNI-in-slirp4netns
+ if rootless.IsRootless() && len(ctr.config.Networks) != 0 {
+ if err := DeallocRootlessCNI(context.Background(), ctr); err != nil {
+ return errors.Wrapf(err, "error tearing down CNI-in-slirp4netns for container %s", ctr.ID())
+ }
+ }
+
// First unmount the namespace
if err := netns.UnmountNS(ctr.state.NetNS); err != nil {
return errors.Wrapf(err, "error unmounting network namespace for container %s", ctr.ID())
diff --git a/libpod/networking_unsupported.go b/libpod/networking_unsupported.go
index dd72a3fd8..76bb01424 100644
--- a/libpod/networking_unsupported.go
+++ b/libpod/networking_unsupported.go
@@ -8,6 +8,10 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) error {
return define.ErrNotImplemented
}
+func (r *Runtime) setupSlirp4netns(ctr *Container) error {
+ return define.ErrNotImplemented
+}
+
func (r *Runtime) setupNetNS(ctr *Container) error {
return define.ErrNotImplemented
}
diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go
index f66835771..bb138ca14 100644
--- a/libpod/oci_conmon_linux.go
+++ b/libpod/oci_conmon_linux.go
@@ -1086,7 +1086,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
cmd.ExtraFiles = append(cmd.ExtraFiles, childSyncPipe, childStartPipe)
cmd.ExtraFiles = append(cmd.ExtraFiles, envFiles...)
- if r.reservePorts && !ctr.config.NetMode.IsSlirp4netns() {
+ if r.reservePorts && !rootless.IsRootless() && !ctr.config.NetMode.IsSlirp4netns() {
ports, err := bindPorts(ctr.config.PortMappings)
if err != nil {
return err
@@ -1098,7 +1098,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
cmd.ExtraFiles = append(cmd.ExtraFiles, ports...)
}
- if ctr.config.NetMode.IsSlirp4netns() {
+ if ctr.config.NetMode.IsSlirp4netns() || rootless.IsRootless() {
if ctr.config.PostConfigureNetNS {
havePortMapping := len(ctr.Config().PortMappings) > 0
if havePortMapping {
diff --git a/libpod/rootless_cni_linux.go b/libpod/rootless_cni_linux.go
new file mode 100644
index 000000000..76dbfdcae
--- /dev/null
+++ b/libpod/rootless_cni_linux.go
@@ -0,0 +1,320 @@
+// +build linux
+
+package libpod
+
+import (
+ "bytes"
+ "context"
+ "io"
+ "path/filepath"
+ "runtime"
+
+ cnitypes "github.com/containernetworking/cni/pkg/types/current"
+ "github.com/containernetworking/plugins/pkg/ns"
+ "github.com/containers/podman/v2/libpod/define"
+ "github.com/containers/podman/v2/libpod/image"
+ "github.com/containers/podman/v2/pkg/util"
+ "github.com/containers/storage/pkg/lockfile"
+ "github.com/hashicorp/go-multierror"
+ spec "github.com/opencontainers/runtime-spec/specs-go"
+ "github.com/opencontainers/runtime-tools/generate"
+ "github.com/pkg/errors"
+ "github.com/sirupsen/logrus"
+)
+
+var rootlessCNIInfraImage = map[string]string{
+ // Built from ../contrib/rootless-cni-infra
+ // TODO: move to Podman's official quay
+ "amd64": "ghcr.io/akihirosuda/podman-rootless-cni-infra:gd34868a13-amd64",
+}
+
+const (
+ rootlessCNIInfraContainerNamespace = "podman-system"
+ rootlessCNIInfraContainerName = "rootless-cni-infra"
+)
+
+// AllocRootlessCNI allocates a CNI netns inside the rootless CNI infra container.
+// Locks "rootless-cni-infra.lck".
+//
+// When the infra container is not running, it is created.
+//
+// AllocRootlessCNI does not lock c. c should be already locked.
+func AllocRootlessCNI(ctx context.Context, c *Container) (ns.NetNS, []*cnitypes.Result, error) {
+ if len(c.config.Networks) == 0 {
+ return nil, nil, errors.New("allocRootlessCNI shall not be called when len(c.config.Networks) == 0")
+ }
+ l, err := getRootlessCNIInfraLock(c.runtime)
+ if err != nil {
+ return nil, nil, err
+ }
+ l.Lock()
+ defer l.Unlock()
+ infra, err := ensureRootlessCNIInfraContainerRunning(ctx, c.runtime)
+ if err != nil {
+ return nil, nil, err
+ }
+ k8sPodName := getPodOrContainerName(c) // passed to CNI as K8S_POD_NAME
+ cniResults := make([]*cnitypes.Result, len(c.config.Networks))
+ for i, nw := range c.config.Networks {
+ cniRes, err := rootlessCNIInfraCallAlloc(infra, c.ID(), nw, k8sPodName)
+ if err != nil {
+ return nil, nil, err
+ }
+ cniResults[i] = cniRes
+ }
+ nsObj, err := rootlessCNIInfraGetNS(infra, c.ID())
+ if err != nil {
+ return nil, nil, err
+ }
+ logrus.Debugf("rootless CNI: container %q will join %q", c.ID(), nsObj.Path())
+ return nsObj, cniResults, nil
+}
+
+// DeallocRootlessCNI deallocates a CNI netns inside the rootless CNI infra container.
+// Locks "rootless-cni-infra.lck".
+//
+// When the infra container is no longer needed, it is removed.
+//
+// DeallocRootlessCNI does not lock c. c should be already locked.
+func DeallocRootlessCNI(ctx context.Context, c *Container) error {
+ if len(c.config.Networks) == 0 {
+ return errors.New("deallocRootlessCNI shall not be called when len(c.config.Networks) == 0")
+ }
+ l, err := getRootlessCNIInfraLock(c.runtime)
+ if err != nil {
+ return err
+ }
+ l.Lock()
+ defer l.Unlock()
+ infra, _ := getRootlessCNIInfraContainer(c.runtime)
+ if infra == nil {
+ return nil
+ }
+ var errs *multierror.Error
+ for _, nw := range c.config.Networks {
+ err := rootlessCNIInfraCallDelloc(infra, c.ID(), nw)
+ if err != nil {
+ errs = multierror.Append(errs, err)
+ }
+ }
+ if isIdle, err := rootlessCNIInfraIsIdle(infra); isIdle || err != nil {
+ if err != nil {
+ logrus.Warn(err)
+ }
+ logrus.Debugf("rootless CNI: removing infra container %q", infra.ID())
+ if err := c.runtime.removeContainer(ctx, infra, true, false, true); err != nil {
+ return err
+ }
+ logrus.Debugf("rootless CNI: removed infra container %q", infra.ID())
+ }
+ return errs.ErrorOrNil()
+}
+
+func getRootlessCNIInfraLock(r *Runtime) (lockfile.Locker, error) {
+ fname := filepath.Join(r.config.Engine.TmpDir, "rootless-cni-infra.lck")
+ return lockfile.GetLockfile(fname)
+}
+
+func getPodOrContainerName(c *Container) string {
+ pod, err := c.runtime.GetPod(c.PodID())
+ if err != nil || pod.config.Name == "" {
+ return c.Name()
+ }
+ return pod.config.Name
+}
+
+func rootlessCNIInfraCallAlloc(infra *Container, id, nw, k8sPodName string) (*cnitypes.Result, error) {
+ logrus.Debugf("rootless CNI: alloc %q, %q, %q", id, nw, k8sPodName)
+ var err error
+
+ _, err = rootlessCNIInfraExec(infra, "alloc", id, nw, k8sPodName)
+ if err != nil {
+ return nil, err
+ }
+ cniResStr, err := rootlessCNIInfraExec(infra, "print-cni-result", id, nw)
+ if err != nil {
+ return nil, err
+ }
+ var cniRes cnitypes.Result
+ if err := json.Unmarshal([]byte(cniResStr), &cniRes); err != nil {
+ return nil, errors.Wrapf(err, "unmarshaling as cnitypes.Result: %q", cniResStr)
+ }
+ return &cniRes, nil
+}
+
+func rootlessCNIInfraCallDelloc(infra *Container, id, nw string) error {
+ logrus.Debugf("rootless CNI: dealloc %q, %q", id, nw)
+ _, err := rootlessCNIInfraExec(infra, "dealloc", id, nw)
+ return err
+}
+
+func rootlessCNIInfraIsIdle(infra *Container) (bool, error) {
+ type isIdle struct {
+ Idle bool `json:"idle"`
+ }
+ resStr, err := rootlessCNIInfraExec(infra, "is-idle")
+ if err != nil {
+ return false, err
+ }
+ var res isIdle
+ if err := json.Unmarshal([]byte(resStr), &res); err != nil {
+ return false, errors.Wrapf(err, "unmarshaling as isIdle: %q", resStr)
+ }
+ return res.Idle, nil
+}
+
+func rootlessCNIInfraGetNS(infra *Container, id string) (ns.NetNS, error) {
+ type printNetnsPath struct {
+ Path string `json:"path"`
+ }
+ resStr, err := rootlessCNIInfraExec(infra, "print-netns-path", id)
+ if err != nil {
+ return nil, err
+ }
+ var res printNetnsPath
+ if err := json.Unmarshal([]byte(resStr), &res); err != nil {
+ return nil, errors.Wrapf(err, "unmarshaling as printNetnsPath: %q", resStr)
+ }
+ nsObj, err := ns.GetNS(res.Path)
+ if err != nil {
+ return nil, err
+ }
+ return nsObj, nil
+}
+
+func getRootlessCNIInfraContainer(r *Runtime) (*Container, error) {
+ containers, err := r.GetContainersWithoutLock(func(c *Container) bool {
+ return c.Namespace() == rootlessCNIInfraContainerNamespace &&
+ c.Name() == rootlessCNIInfraContainerName
+ })
+ if err != nil {
+ return nil, err
+ }
+ if len(containers) == 0 {
+ return nil, nil
+ }
+ return containers[0], nil
+}
+
+func ensureRootlessCNIInfraContainerRunning(ctx context.Context, r *Runtime) (*Container, error) {
+ c, err := getRootlessCNIInfraContainer(r)
+ if err != nil {
+ return nil, err
+ }
+ if c == nil {
+ return startRootlessCNIInfraContainer(ctx, r)
+ }
+ st, err := c.ContainerState()
+ if err != nil {
+ return nil, err
+ }
+ if st.State == define.ContainerStateRunning {
+ logrus.Debugf("rootless CNI: infra container %q is already running", c.ID())
+ return c, nil
+ }
+ logrus.Debugf("rootless CNI: infra container %q is %q, being started", c.ID(), st.State)
+ if err := c.initAndStart(ctx); err != nil {
+ return nil, err
+ }
+ logrus.Debugf("rootless CNI: infra container %q is running", c.ID())
+ return c, nil
+}
+
+func startRootlessCNIInfraContainer(ctx context.Context, r *Runtime) (*Container, error) {
+ imageName, ok := rootlessCNIInfraImage[runtime.GOARCH]
+ if !ok {
+ return nil, errors.Errorf("cannot find rootless-podman-network-sandbox image for %s", runtime.GOARCH)
+ }
+ logrus.Debugf("rootless CNI: ensuring image %q to exist", imageName)
+ newImage, err := r.ImageRuntime().New(ctx, imageName, "", "", nil, nil,
+ image.SigningOptions{}, nil, util.PullImageMissing)
+ if err != nil {
+ return nil, err
+ }
+ logrus.Debugf("rootless CNI: image %q is ready", imageName)
+
+ g, err := generate.New("linux")
+ if err != nil {
+ return nil, err
+ }
+ g.SetupPrivileged(true)
+ // Set --pid=host for ease of propagating "/proc/PID/ns/net" string
+ if err := g.RemoveLinuxNamespace(string(spec.PIDNamespace)); err != nil {
+ return nil, err
+ }
+ g.RemoveMount("/proc")
+ procMount := spec.Mount{
+ Destination: "/proc",
+ Type: "bind",
+ Source: "/proc",
+ Options: []string{"rbind", "nosuid", "noexec", "nodev"},
+ }
+ g.AddMount(procMount)
+ // Mount CNI networks
+ etcCNINetD := spec.Mount{
+ Destination: "/etc/cni/net.d",
+ Type: "bind",
+ Source: r.config.Network.NetworkConfigDir,
+ Options: []string{"ro"},
+ }
+ g.AddMount(etcCNINetD)
+ // FIXME: how to propagate ProcessArgs and Envs from Dockerfile?
+ g.SetProcessArgs([]string{"sleep", "infinity"})
+ g.AddProcessEnv("CNI_PATH", "/opt/cni/bin")
+ var options []CtrCreateOption
+ options = append(options, WithRootFSFromImage(newImage.ID(), imageName, imageName))
+ options = append(options, WithCtrNamespace(rootlessCNIInfraContainerNamespace))
+ options = append(options, WithName(rootlessCNIInfraContainerName))
+ options = append(options, WithPrivileged(true))
+ options = append(options, WithSecLabels([]string{"disable"}))
+ options = append(options, WithRestartPolicy("always"))
+ options = append(options, WithNetNS(nil, false, "slirp4netns", nil))
+ c, err := r.NewContainer(ctx, g.Config, options...)
+ if err != nil {
+ return nil, err
+ }
+ logrus.Debugf("rootless CNI infra container %q is created, now being started", c.ID())
+ if err := c.initAndStart(ctx); err != nil {
+ return nil, err
+ }
+ logrus.Debugf("rootless CNI: infra container %q is running", c.ID())
+
+ return c, nil
+}
+
+func rootlessCNIInfraExec(c *Container, args ...string) (string, error) {
+ cmd := "rootless-cni-infra"
+ var (
+ outB bytes.Buffer
+ errB bytes.Buffer
+ streams define.AttachStreams
+ config ExecConfig
+ )
+ streams.OutputStream = &nopWriteCloser{Writer: &outB}
+ streams.ErrorStream = &nopWriteCloser{Writer: &errB}
+ streams.AttachOutput = true
+ streams.AttachError = true
+ config.Command = append([]string{cmd}, args...)
+ config.Privileged = true
+ logrus.Debugf("rootlessCNIInfraExec: c.ID()=%s, config=%+v, streams=%v, begin",
+ c.ID(), config, streams)
+ code, err := c.Exec(&config, &streams, nil)
+ logrus.Debugf("rootlessCNIInfraExec: c.ID()=%s, config=%+v, streams=%v, end (code=%d, err=%v)",
+ c.ID(), config, streams, code, err)
+ if err != nil {
+ return "", err
+ }
+ if code != 0 {
+ return "", errors.Errorf("command %s %v in container %s failed with status %d, stdout=%q, stderr=%q",
+ cmd, args, c.ID(), code, outB.String(), errB.String())
+ }
+ return outB.String(), nil
+}
+
+type nopWriteCloser struct {
+ io.Writer
+}
+
+func (nwc *nopWriteCloser) Close() error {
+ return nil
+}
diff --git a/libpod/runtime_ctr.go b/libpod/runtime_ctr.go
index 936dce2e9..241448981 100644
--- a/libpod/runtime_ctr.go
+++ b/libpod/runtime_ctr.go
@@ -772,7 +772,11 @@ func (r *Runtime) LookupContainer(idOrName string) (*Container, error) {
func (r *Runtime) GetContainers(filters ...ContainerFilter) ([]*Container, error) {
r.lock.RLock()
defer r.lock.RUnlock()
+ return r.GetContainersWithoutLock(filters...)
+}
+// GetContainersWithoutLock is same as GetContainers but without lock
+func (r *Runtime) GetContainersWithoutLock(filters ...ContainerFilter) ([]*Container, error) {
if !r.valid {
return nil, define.ErrRuntimeStopped
}
diff --git a/pkg/domain/infra/abi/network.go b/pkg/domain/infra/abi/network.go
index c06714cbb..807e4b272 100644
--- a/pkg/domain/infra/abi/network.go
+++ b/pkg/domain/infra/abi/network.go
@@ -5,6 +5,7 @@ import (
"encoding/json"
"fmt"
"io/ioutil"
+ "os"
"path/filepath"
"strings"
@@ -216,6 +217,9 @@ func createBridge(r *libpod.Runtime, name string, options entities.NetworkCreate
if err != nil {
return "", err
}
+ if err := os.MkdirAll(network.GetCNIConfDir(runtimeConfig), 0755); err != nil {
+ return "", err
+ }
cniPathName := filepath.Join(network.GetCNIConfDir(runtimeConfig), fmt.Sprintf("%s.conflist", name))
err = ioutil.WriteFile(cniPathName, b, 0644)
return cniPathName, err
diff --git a/pkg/network/files.go b/pkg/network/files.go
index 38ce38b97..a2090491f 100644
--- a/pkg/network/files.go
+++ b/pkg/network/files.go
@@ -14,11 +14,16 @@ import (
"github.com/pkg/errors"
)
-func GetCNIConfDir(config *config.Config) string {
- if len(config.Network.NetworkConfigDir) < 1 {
- return CNIConfigDir
+func GetCNIConfDir(configArg *config.Config) string {
+ if len(configArg.Network.NetworkConfigDir) < 1 {
+ dc, err := config.DefaultConfig()
+ if err != nil {
+ // Fallback to hard-coded dir
+ return CNIConfigDir
+ }
+ return dc.Network.NetworkConfigDir
}
- return config.Network.NetworkConfigDir
+ return configArg.Network.NetworkConfigDir
}
// LoadCNIConfsFromDir loads all the CNI configurations from a dir
diff --git a/rootless.md b/rootless.md
index 196ed52c3..22b03e340 100644
--- a/rootless.md
+++ b/rootless.md
@@ -28,9 +28,6 @@ can easily fail
* Can not use overlayfs driver, but does support fuse-overlayfs
* Ubuntu supports non root overlay, but no other Linux distros do.
* Only other supported driver is VFS.
-* No CNI Support
- * CNI wants to modify IPTables, plus other network manipulation that requires CAP_SYS_ADMIN.
- * There is potential we could probably do some sort of denylisting of the relevant plugins, and add a new plugin for rootless networking - slirp4netns as one example and there may be others
* Cannot use ping out of the box.
* [(Can be fixed by setting sysctl on host)](https://github.com/containers/podman/blob/master/troubleshooting.md#6-rootless-containers-cannot-ping-hosts)
* Requires new shadow-utils (not found in older (RHEL7/Centos7 distros) Should be fixed in RHEL7.7 release)
diff --git a/test/e2e/common_test.go b/test/e2e/common_test.go
index ed55484e3..b6bbae15b 100644
--- a/test/e2e/common_test.go
+++ b/test/e2e/common_test.go
@@ -245,6 +245,12 @@ func PodmanTestCreateUtil(tempDir string, remote bool) *PodmanTestIntegration {
}
os.Setenv("DISABLE_HC_SYSTEMD", "true")
CNIConfigDir := "/etc/cni/net.d"
+ if rootless.IsRootless() {
+ CNIConfigDir = filepath.Join(os.Getenv("HOME"), ".config/cni/net.d")
+ }
+ if err := os.MkdirAll(CNIConfigDir, 0755); err != nil {
+ panic(err)
+ }
storageFs := STORAGE_FS
if rootless.IsRootless() {
diff --git a/test/e2e/network_create_test.go b/test/e2e/network_create_test.go
index f97e6c1f1..13d515d8e 100644
--- a/test/e2e/network_create_test.go
+++ b/test/e2e/network_create_test.go
@@ -74,7 +74,6 @@ var _ = Describe("Podman network create", func() {
)
BeforeEach(func() {
- SkipIfRootless()
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
@@ -180,6 +179,7 @@ var _ = Describe("Podman network create", func() {
It("podman network create with name and IPv6 subnet", func() {
SkipIfRemote()
+ SkipIfRootless()
var (
results []network.NcList
)
diff --git a/test/e2e/network_test.go b/test/e2e/network_test.go
index 55f12f16a..c35b82fc1 100644
--- a/test/e2e/network_test.go
+++ b/test/e2e/network_test.go
@@ -7,6 +7,7 @@ import (
"path/filepath"
"strings"
+ "github.com/containers/podman/v2/pkg/rootless"
. "github.com/containers/podman/v2/test/utils"
"github.com/containers/storage/pkg/stringid"
. "github.com/onsi/ginkgo"
@@ -32,7 +33,6 @@ var _ = Describe("Podman network", func() {
)
BeforeEach(func() {
- SkipIfRootless()
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
@@ -74,13 +74,12 @@ var _ = Describe("Podman network", func() {
}
]
}`
- cniPath = "/etc/cni/net.d"
)
It("podman network list", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
@@ -93,7 +92,7 @@ var _ = Describe("Podman network", func() {
It("podman network list -q", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
@@ -106,7 +105,7 @@ var _ = Describe("Podman network", func() {
It("podman network list --filter success", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
@@ -119,7 +118,7 @@ var _ = Describe("Podman network", func() {
It("podman network list --filter failure", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
@@ -138,7 +137,7 @@ var _ = Describe("Podman network", func() {
It("podman network rm", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
@@ -166,11 +165,16 @@ var _ = Describe("Podman network", func() {
It("podman network inspect", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
- session := podmanTest.Podman([]string{"network", "inspect", "podman-integrationtest", "podman"})
+ expectedNetworks := []string{"podman-integrationtest"}
+ if !rootless.IsRootless() {
+ // rootful image contains "podman/cni/87-podman-bridge.conflist" for "podman" network
+ expectedNetworks = append(expectedNetworks, "podman")
+ }
+ session := podmanTest.Podman(append([]string{"network", "inspect"}, expectedNetworks...))
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(session.IsJSONOutputValid()).To(BeTrue())
@@ -179,7 +183,7 @@ var _ = Describe("Podman network", func() {
It("podman network inspect", func() {
// Setup, use uuid to prevent conflict with other tests
uuid := stringid.GenerateNonCryptoID()
- secondPath := filepath.Join(cniPath, fmt.Sprintf("%s.conflist", uuid))
+ secondPath := filepath.Join(podmanTest.CNIConfigDir, fmt.Sprintf("%s.conflist", uuid))
writeConf([]byte(secondConf), secondPath)
defer removeConf(secondPath)
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-12 08:21:58 +0000