89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
/*
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Copyright 2018 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package commands
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import (
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"github.com/containers/image/manifest"
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"github.com/docker/docker/builder/dockerfile/instructions"
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"github.com/sirupsen/logrus"
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"os"
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"os/exec"
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"strconv"
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"strings"
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"syscall"
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)
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type RunCommand struct {
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cmd *instructions.RunCommand
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}
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func (r *RunCommand) ExecuteCommand(config *manifest.Schema2Config) error {
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var newCommand []string
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if r.cmd.PrependShell {
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// This is the default shell on Linux
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// TODO: Support shell command here
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shell := []string{"/bin/sh", "-c"}
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newCommand = append(shell, strings.Join(r.cmd.CmdLine, " "))
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} else {
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newCommand = r.cmd.CmdLine
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}
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logrus.Infof("cmd: %s", newCommand[0])
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logrus.Infof("args: %s", newCommand[1:])
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cmd := exec.Command(newCommand[0], newCommand[1:]...)
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cmd.Stdout = os.Stdout
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// If specified, run the command as a specific user
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if config.User != "" {
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userAndGroup := strings.Split(config.User, ":")
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// uid and gid need to be uint32
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uid64, err := strconv.ParseUint(userAndGroup[0], 10, 32)
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if err != nil {
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return err
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}
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uid := uint32(uid64)
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var gid uint32
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if len(userAndGroup) > 1 {
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gid64, err := strconv.ParseUint(userAndGroup[1], 10, 32)
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if err != nil {
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return err
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}
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gid = uint32(gid64)
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}
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cmd.SysProcAttr = &syscall.SysProcAttr{}
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cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uid, Gid: gid}
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}
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return cmd.Run()
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}
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// FilesToSnapshot returns nil for this command because we don't know which files
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// have changed, so we snapshot the entire system.
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func (r *RunCommand) FilesToSnapshot() []string {
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return nil
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}
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// Author returns some information about the command for the image config
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func (r *RunCommand) CreatedBy() string {
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cmdLine := strings.Join(r.cmd.CmdLine, " ")
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if r.cmd.PrependShell {
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// TODO: Support shell command here
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shell := []string{"/bin/sh", "-c"}
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return strings.Join(append(shell, cmdLine), " ")
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}
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return cmdLine
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}
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