diff options
Diffstat (limited to 'libpod/network/cni/cni_exec.go')
| -rw-r--r-- | libpod/network/cni/cni_exec.go | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/libpod/network/cni/cni_exec.go b/libpod/network/cni/cni_exec.go deleted file mode 100644 index ae857bcfb..000000000 --- a/libpod/network/cni/cni_exec.go +++ /dev/null @@ -1,110 +0,0 @@ -// Copyright 2016 CNI authors -// Copyright 2021 Podman authors -// -// This code has been originally copied from github.com/containernetworking/cni -// but has been changed to better fit the Podman use case. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// +build linux - -package cni - -import ( - "bytes" - "context" - "encoding/json" - "fmt" - "os/exec" - "path/filepath" - - "github.com/containernetworking/cni/pkg/invoke" - "github.com/containernetworking/cni/pkg/version" - "github.com/containers/podman/v3/pkg/rootless" -) - -type cniExec struct { - version.PluginDecoder -} - -type cniPluginError struct { - plugin string - Code uint `json:"code"` - Msg string `json:"msg"` - Details string `json:"details,omitempty"` -} - -// Error returns a nicely formatted error message for the cni plugin errors. -func (e *cniPluginError) Error() string { - err := fmt.Sprintf("cni plugin %s failed", e.plugin) - if e.Msg != "" { - err = fmt.Sprintf("%s: %s", err, e.Msg) - } else if e.Code > 0 { - err = fmt.Sprintf("%s with error code %d", err, e.Code) - } - if e.Details != "" { - err = fmt.Sprintf("%s: %s", err, e.Details) - } - return err -} - -// ExecPlugin execute the cni plugin. Returns the stdout of the plugin or an error. -func (e *cniExec) ExecPlugin(ctx context.Context, pluginPath string, stdinData []byte, environ []string) ([]byte, error) { - stdout := &bytes.Buffer{} - stderr := &bytes.Buffer{} - c := exec.CommandContext(ctx, pluginPath) - c.Env = environ - c.Stdin = bytes.NewBuffer(stdinData) - c.Stdout = stdout - c.Stderr = stderr - - // The dnsname plugin tries to use XDG_RUNTIME_DIR to store files. - // podman run will have XDG_RUNTIME_DIR set and thus the cni plugin can use - // it. The problem is that XDG_RUNTIME_DIR is unset for the conmon process - // for rootful users. This causes issues since the cleanup process is spawned - // by conmon and thus not have XDG_RUNTIME_DIR set to same value as podman run. - // Because of it dnsname will not find the config files and cannot correctly cleanup. - // To fix this we should also unset XDG_RUNTIME_DIR for the cni plugins as rootful. - if !rootless.IsRootless() { - c.Env = append(c.Env, "XDG_RUNTIME_DIR=") - } - - err := c.Run() - if err != nil { - return nil, annotatePluginError(err, pluginPath, stdout.Bytes(), stderr.Bytes()) - } - return stdout.Bytes(), nil -} - -// annotatePluginError parses the common cni plugin error json. -func annotatePluginError(err error, plugin string, stdout []byte, stderr []byte) error { - pluginName := filepath.Base(plugin) - emsg := cniPluginError{ - plugin: pluginName, - } - if len(stdout) == 0 { - if len(stderr) == 0 { - emsg.Msg = err.Error() - } else { - emsg.Msg = string(stderr) - } - } else if perr := json.Unmarshal(stdout, &emsg); perr != nil { - emsg.Msg = fmt.Sprintf("failed to unmarshal error message %q: %v", string(stdout), perr) - } - return &emsg -} - -// FindInPath finds the plugin in the given paths. -func (e *cniExec) FindInPath(plugin string, paths []string) (string, error) { - return invoke.FindInPath(plugin, paths) -} |