pax_global_header00006660000000000000000000000064135361000720014507gustar00rootroot0000000000000052 comment=e029b79d8cda8374981c64eba71f28ec38e5526f golang-github-containerd-go-runc_0.0~git20190911.e029b79/000077500000000000000000000000001353610007200224045ustar00rootroot00000000000000golang-github-containerd-go-runc_0.0~git20190911.e029b79/.travis.yml000066400000000000000000000007611353610007200245210ustar00rootroot00000000000000language: go go: - 1.12.x - 1.13.x install: - go get -t ./... - go get -u github.com/vbatts/git-validation - go get -u github.com/kunalkushwaha/ltag before_script: - pushd ..; git clone https://github.com/containerd/project; popd script: - DCO_VERBOSITY=-q ../project/script/validate/dco - ../project/script/validate/fileheader ../project/ - go test -v -race -covermode=atomic -coverprofile=coverage.txt ./... after_success: - bash <(curl -s https://codecov.io/bash) golang-github-containerd-go-runc_0.0~git20190911.e029b79/LICENSE000066400000000000000000000261351353610007200234200ustar00rootroot00000000000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. 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See the License for the specific language governing permissions and limitations under the License. golang-github-containerd-go-runc_0.0~git20190911.e029b79/README.md000066400000000000000000000023441353610007200236660ustar00rootroot00000000000000# go-runc [![Build Status](https://travis-ci.org/containerd/go-runc.svg?branch=master)](https://travis-ci.org/containerd/go-runc) [![codecov](https://codecov.io/gh/containerd/go-runc/branch/master/graph/badge.svg)](https://codecov.io/gh/containerd/go-runc) This is a package for consuming the [runc](https://github.com/opencontainers/runc) binary in your Go applications. It tries to expose all the settings and features of the runc CLI. If there is something missing then add it, its opensource! This needs runc @ [a9610f2c0](https://github.com/opencontainers/runc/commit/a9610f2c0237d2636d05a031ec8659a70e75ffeb) or greater. ## Docs Docs can be found at [godoc.org](https://godoc.org/github.com/containerd/go-runc). ## Project details The go-runc is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE). As a containerd sub-project, you will find the: * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md), * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS), * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md) information in our [`containerd/project`](https://github.com/containerd/project) repository. golang-github-containerd-go-runc_0.0~git20190911.e029b79/command_linux.go000066400000000000000000000026641353610007200256000ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "context" "os" "os/exec" "strings" "syscall" ) func (r *Runc) command(context context.Context, args ...string) *exec.Cmd { command := r.Command if command == "" { command = DefaultCommand } cmd := exec.CommandContext(context, command, append(r.args(), args...)...) cmd.SysProcAttr = &syscall.SysProcAttr{ Setpgid: r.Setpgid, } cmd.Env = filterEnv(os.Environ(), "NOTIFY_SOCKET") // NOTIFY_SOCKET introduces a special behavior in runc but should only be set if invoked from systemd if r.PdeathSignal != 0 { cmd.SysProcAttr.Pdeathsig = r.PdeathSignal } return cmd } func filterEnv(in []string, names ...string) []string { out := make([]string, 0, len(in)) loop0: for _, v := range in { for _, k := range names { if strings.HasPrefix(v, k+"=") { continue loop0 } } out = append(out, v) } return out } golang-github-containerd-go-runc_0.0~git20190911.e029b79/command_other.go000066400000000000000000000016421353610007200255550ustar00rootroot00000000000000// +build !linux /* Copyright The containerd Authors. 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 http://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. */ package runc import ( "context" "os" "os/exec" ) func (r *Runc) command(context context.Context, args ...string) *exec.Cmd { command := r.Command if command == "" { command = DefaultCommand } cmd := exec.CommandContext(context, command, append(r.args(), args...)...) cmd.Env = os.Environ() return cmd } golang-github-containerd-go-runc_0.0~git20190911.e029b79/console.go000066400000000000000000000075141353610007200244040ustar00rootroot00000000000000// +build !windows /* Copyright The containerd Authors. 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 http://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. */ package runc import ( "fmt" "io/ioutil" "net" "os" "path/filepath" "github.com/containerd/console" "golang.org/x/sys/unix" ) // NewConsoleSocket creates a new unix socket at the provided path to accept a // pty master created by runc for use by the container func NewConsoleSocket(path string) (*Socket, error) { abs, err := filepath.Abs(path) if err != nil { return nil, err } addr, err := net.ResolveUnixAddr("unix", abs) if err != nil { return nil, err } l, err := net.ListenUnix("unix", addr) if err != nil { return nil, err } return &Socket{ l: l, }, nil } // NewTempConsoleSocket returns a temp console socket for use with a container // On Close(), the socket is deleted func NewTempConsoleSocket() (*Socket, error) { runtimeDir := os.Getenv("XDG_RUNTIME_DIR") dir, err := ioutil.TempDir(runtimeDir, "pty") if err != nil { return nil, err } abs, err := filepath.Abs(filepath.Join(dir, "pty.sock")) if err != nil { return nil, err } addr, err := net.ResolveUnixAddr("unix", abs) if err != nil { return nil, err } l, err := net.ListenUnix("unix", addr) if err != nil { return nil, err } if runtimeDir != "" { if err := os.Chmod(abs, 0755|os.ModeSticky); err != nil { return nil, err } } return &Socket{ l: l, rmdir: true, }, nil } // Socket is a unix socket that accepts the pty master created by runc type Socket struct { rmdir bool l *net.UnixListener } // Path returns the path to the unix socket on disk func (c *Socket) Path() string { return c.l.Addr().String() } // recvFd waits for a file descriptor to be sent over the given AF_UNIX // socket. The file name of the remote file descriptor will be recreated // locally (it is sent as non-auxiliary data in the same payload). func recvFd(socket *net.UnixConn) (*os.File, error) { const MaxNameLen = 4096 var oobSpace = unix.CmsgSpace(4) name := make([]byte, MaxNameLen) oob := make([]byte, oobSpace) n, oobn, _, _, err := socket.ReadMsgUnix(name, oob) if err != nil { return nil, err } if n >= MaxNameLen || oobn != oobSpace { return nil, fmt.Errorf("recvfd: incorrect number of bytes read (n=%d oobn=%d)", n, oobn) } // Truncate. name = name[:n] oob = oob[:oobn] scms, err := unix.ParseSocketControlMessage(oob) if err != nil { return nil, err } if len(scms) != 1 { return nil, fmt.Errorf("recvfd: number of SCMs is not 1: %d", len(scms)) } scm := scms[0] fds, err := unix.ParseUnixRights(&scm) if err != nil { return nil, err } if len(fds) != 1 { return nil, fmt.Errorf("recvfd: number of fds is not 1: %d", len(fds)) } fd := uintptr(fds[0]) return os.NewFile(fd, string(name)), nil } // ReceiveMaster blocks until the socket receives the pty master func (c *Socket) ReceiveMaster() (console.Console, error) { conn, err := c.l.Accept() if err != nil { return nil, err } defer conn.Close() uc, ok := conn.(*net.UnixConn) if !ok { return nil, fmt.Errorf("received connection which was not a unix socket") } f, err := recvFd(uc) if err != nil { return nil, err } return console.ConsoleFromFile(f) } // Close closes the unix socket func (c *Socket) Close() error { err := c.l.Close() if c.rmdir { if rerr := os.RemoveAll(filepath.Dir(c.Path())); err == nil { err = rerr } } return err } golang-github-containerd-go-runc_0.0~git20190911.e029b79/console_test.go000066400000000000000000000035101353610007200254330ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "errors" "os" "testing" ) func TestTempConsole(t *testing.T) { if err := os.Setenv("XDG_RUNTIME_DIR", ""); err != nil { t.Fatalf("failed to clear the XDG_RUNTIME_DIR env: %v", err) } c, path := testSocketWithCorrectStickyBitMode(t, 0) ensureSocketCleanup(t, c, path) } func TestTempConsoleWithXdgRuntimeDir(t *testing.T) { tmpDir := "/tmp/foo" if err := os.Setenv("XDG_RUNTIME_DIR", tmpDir); err != nil { t.Fatal(err) } if err := os.MkdirAll(tmpDir, 0755); err != nil { t.Fatal(err) } c, path := testSocketWithCorrectStickyBitMode(t, os.ModeSticky) ensureSocketCleanup(t, c, path) if err := os.RemoveAll(tmpDir); err != nil { t.Fatal(err) } } func testSocketWithCorrectStickyBitMode(t *testing.T, expectedMode os.FileMode) (*Socket, string) { c, err := NewTempConsoleSocket() if err != nil { t.Fatal(err) } path := c.Path() info, err := os.Stat(path) if err != nil { t.Fatal(err) } if (info.Mode() & os.ModeSticky) != expectedMode { t.Fatal(errors.New("socket has incorrect mode")) } return c, path } func ensureSocketCleanup(t *testing.T, c *Socket, path string) { if err := c.Close(); err != nil { t.Fatal(err) } if _, err := os.Stat(path); err == nil { t.Fatal("path still exists") } } golang-github-containerd-go-runc_0.0~git20190911.e029b79/container.go000066400000000000000000000020061353610007200247130ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import "time" // Container hold information for a runc container type Container struct { ID string `json:"id"` Pid int `json:"pid"` Status string `json:"status"` Bundle string `json:"bundle"` Rootfs string `json:"rootfs"` Created time.Time `json:"created"` Annotations map[string]string `json:"annotations"` } golang-github-containerd-go-runc_0.0~git20190911.e029b79/events.go000066400000000000000000000063371353610007200242500ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc type Event struct { // Type are the event type generated by runc // If the type is "error" then check the Err field on the event for // the actual error Type string `json:"type"` ID string `json:"id"` Stats *Stats `json:"data,omitempty"` // Err has a read error if we were unable to decode the event from runc Err error `json:"-"` } type Stats struct { Cpu Cpu `json:"cpu"` Memory Memory `json:"memory"` Pids Pids `json:"pids"` Blkio Blkio `json:"blkio"` Hugetlb map[string]Hugetlb `json:"hugetlb"` } type Hugetlb struct { Usage uint64 `json:"usage,omitempty"` Max uint64 `json:"max,omitempty"` Failcnt uint64 `json:"failcnt"` } type BlkioEntry struct { Major uint64 `json:"major,omitempty"` Minor uint64 `json:"minor,omitempty"` Op string `json:"op,omitempty"` Value uint64 `json:"value,omitempty"` } type Blkio struct { IoServiceBytesRecursive []BlkioEntry `json:"ioServiceBytesRecursive,omitempty"` IoServicedRecursive []BlkioEntry `json:"ioServicedRecursive,omitempty"` IoQueuedRecursive []BlkioEntry `json:"ioQueueRecursive,omitempty"` IoServiceTimeRecursive []BlkioEntry `json:"ioServiceTimeRecursive,omitempty"` IoWaitTimeRecursive []BlkioEntry `json:"ioWaitTimeRecursive,omitempty"` IoMergedRecursive []BlkioEntry `json:"ioMergedRecursive,omitempty"` IoTimeRecursive []BlkioEntry `json:"ioTimeRecursive,omitempty"` SectorsRecursive []BlkioEntry `json:"sectorsRecursive,omitempty"` } type Pids struct { Current uint64 `json:"current,omitempty"` Limit uint64 `json:"limit,omitempty"` } type Throttling struct { Periods uint64 `json:"periods,omitempty"` ThrottledPeriods uint64 `json:"throttledPeriods,omitempty"` ThrottledTime uint64 `json:"throttledTime,omitempty"` } type CpuUsage struct { // Units: nanoseconds. Total uint64 `json:"total,omitempty"` Percpu []uint64 `json:"percpu,omitempty"` Kernel uint64 `json:"kernel"` User uint64 `json:"user"` } type Cpu struct { Usage CpuUsage `json:"usage,omitempty"` Throttling Throttling `json:"throttling,omitempty"` } type MemoryEntry struct { Limit uint64 `json:"limit"` Usage uint64 `json:"usage,omitempty"` Max uint64 `json:"max,omitempty"` Failcnt uint64 `json:"failcnt"` } type Memory struct { Cache uint64 `json:"cache,omitempty"` Usage MemoryEntry `json:"usage,omitempty"` Swap MemoryEntry `json:"swap,omitempty"` Kernel MemoryEntry `json:"kernel,omitempty"` KernelTCP MemoryEntry `json:"kernelTCP,omitempty"` Raw map[string]uint64 `json:"raw,omitempty"` } golang-github-containerd-go-runc_0.0~git20190911.e029b79/io.go000066400000000000000000000066711353610007200233540ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "io" "os" "os/exec" ) type IO interface { io.Closer Stdin() io.WriteCloser Stdout() io.ReadCloser Stderr() io.ReadCloser Set(*exec.Cmd) } type StartCloser interface { CloseAfterStart() error } // IOOpt sets I/O creation options type IOOpt func(*IOOption) // IOOption holds I/O creation options type IOOption struct { OpenStdin bool OpenStdout bool OpenStderr bool } func defaultIOOption() *IOOption { return &IOOption{ OpenStdin: true, OpenStdout: true, OpenStderr: true, } } func newPipe() (*pipe, error) { r, w, err := os.Pipe() if err != nil { return nil, err } return &pipe{ r: r, w: w, }, nil } type pipe struct { r *os.File w *os.File } func (p *pipe) Close() error { err := p.w.Close() if rerr := p.r.Close(); err == nil { err = rerr } return err } type pipeIO struct { in *pipe out *pipe err *pipe } func (i *pipeIO) Stdin() io.WriteCloser { if i.in == nil { return nil } return i.in.w } func (i *pipeIO) Stdout() io.ReadCloser { if i.out == nil { return nil } return i.out.r } func (i *pipeIO) Stderr() io.ReadCloser { if i.err == nil { return nil } return i.err.r } func (i *pipeIO) Close() error { var err error for _, v := range []*pipe{ i.in, i.out, i.err, } { if v != nil { if cerr := v.Close(); err == nil { err = cerr } } } return err } func (i *pipeIO) CloseAfterStart() error { for _, f := range []*pipe{ i.out, i.err, } { if f != nil { f.w.Close() } } return nil } // Set sets the io to the exec.Cmd func (i *pipeIO) Set(cmd *exec.Cmd) { if i.in != nil { cmd.Stdin = i.in.r } if i.out != nil { cmd.Stdout = i.out.w } if i.err != nil { cmd.Stderr = i.err.w } } func NewSTDIO() (IO, error) { return &stdio{}, nil } type stdio struct { } func (s *stdio) Close() error { return nil } func (s *stdio) Set(cmd *exec.Cmd) { cmd.Stdin = os.Stdin cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr } func (s *stdio) Stdin() io.WriteCloser { return os.Stdin } func (s *stdio) Stdout() io.ReadCloser { return os.Stdout } func (s *stdio) Stderr() io.ReadCloser { return os.Stderr } // NewNullIO returns IO setup for /dev/null use with runc func NewNullIO() (IO, error) { f, err := os.Open(os.DevNull) if err != nil { return nil, err } return &nullIO{ devNull: f, }, nil } type nullIO struct { devNull *os.File } func (n *nullIO) Close() error { // this should be closed after start but if not // make sure we close the file but don't return the error n.devNull.Close() return nil } func (n *nullIO) Stdin() io.WriteCloser { return nil } func (n *nullIO) Stdout() io.ReadCloser { return nil } func (n *nullIO) Stderr() io.ReadCloser { return nil } func (n *nullIO) Set(c *exec.Cmd) { // don't set STDIN here c.Stdout = n.devNull c.Stderr = n.devNull } func (n *nullIO) CloseAfterStart() error { return n.devNull.Close() } golang-github-containerd-go-runc_0.0~git20190911.e029b79/io_unix.go000066400000000000000000000035561353610007200244160ustar00rootroot00000000000000// +build !windows /* Copyright The containerd Authors. 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 http://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. */ package runc import ( "github.com/pkg/errors" "golang.org/x/sys/unix" ) // NewPipeIO creates pipe pairs to be used with runc func NewPipeIO(uid, gid int, opts ...IOOpt) (i IO, err error) { option := defaultIOOption() for _, o := range opts { o(option) } var ( pipes []*pipe stdin, stdout, stderr *pipe ) // cleanup in case of an error defer func() { if err != nil { for _, p := range pipes { p.Close() } } }() if option.OpenStdin { if stdin, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stdin) if err = unix.Fchown(int(stdin.r.Fd()), uid, gid); err != nil { return nil, errors.Wrap(err, "failed to chown stdin") } } if option.OpenStdout { if stdout, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stdout) if err = unix.Fchown(int(stdout.w.Fd()), uid, gid); err != nil { return nil, errors.Wrap(err, "failed to chown stdout") } } if option.OpenStderr { if stderr, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stderr) if err = unix.Fchown(int(stderr.w.Fd()), uid, gid); err != nil { return nil, errors.Wrap(err, "failed to chown stderr") } } return &pipeIO{ in: stdin, out: stdout, err: stderr, }, nil } golang-github-containerd-go-runc_0.0~git20190911.e029b79/io_windows.go000066400000000000000000000026401353610007200251160ustar00rootroot00000000000000// +build windows /* Copyright The containerd Authors. 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 http://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. */ package runc // NewPipeIO creates pipe pairs to be used with runc func NewPipeIO(opts ...IOOpt) (i IO, err error) { option := defaultIOOption() for _, o := range opts { o(option) } var ( pipes []*pipe stdin, stdout, stderr *pipe ) // cleanup in case of an error defer func() { if err != nil { for _, p := range pipes { p.Close() } } }() if option.OpenStdin { if stdin, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stdin) } if option.OpenStdout { if stdout, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stdout) } if option.OpenStderr { if stderr, err = newPipe(); err != nil { return nil, err } pipes = append(pipes, stderr) } return &pipeIO{ in: stdin, out: stdout, err: stderr, }, nil } golang-github-containerd-go-runc_0.0~git20190911.e029b79/monitor.go000066400000000000000000000035021353610007200244220ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "os/exec" "syscall" "time" ) var Monitor ProcessMonitor = &defaultMonitor{} type Exit struct { Timestamp time.Time Pid int Status int } // ProcessMonitor is an interface for process monitoring // // It allows daemons using go-runc to have a SIGCHLD handler // to handle exits without introducing races between the handler // and go's exec.Cmd // These methods should match the methods exposed by exec.Cmd to provide // a consistent experience for the caller type ProcessMonitor interface { Start(*exec.Cmd) (chan Exit, error) Wait(*exec.Cmd, chan Exit) (int, error) } type defaultMonitor struct { } func (m *defaultMonitor) Start(c *exec.Cmd) (chan Exit, error) { if err := c.Start(); err != nil { return nil, err } ec := make(chan Exit, 1) go func() { var status int if err := c.Wait(); err != nil { status = 255 if exitErr, ok := err.(*exec.ExitError); ok { if ws, ok := exitErr.Sys().(syscall.WaitStatus); ok { status = ws.ExitStatus() } } } ec <- Exit{ Timestamp: time.Now(), Pid: c.Process.Pid, Status: status, } close(ec) }() return ec, nil } func (m *defaultMonitor) Wait(c *exec.Cmd, ec chan Exit) (int, error) { e := <-ec return e.Status, nil } golang-github-containerd-go-runc_0.0~git20190911.e029b79/runc.go000066400000000000000000000422621353610007200237100ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "context" "encoding/json" "errors" "fmt" "io" "io/ioutil" "os" "os/exec" "path/filepath" "strconv" "strings" "syscall" "time" specs "github.com/opencontainers/runtime-spec/specs-go" ) // Format is the type of log formatting options avaliable type Format string // TopBody represents the structured data of the full ps output type TopResults struct { // Processes running in the container, where each is process is an array of values corresponding to the headers Processes [][]string `json:"Processes"` // Headers are the names of the columns Headers []string `json:"Headers"` } const ( none Format = "" JSON Format = "json" Text Format = "text" // DefaultCommand is the default command for Runc DefaultCommand = "runc" ) // Runc is the client to the runc cli type Runc struct { //If command is empty, DefaultCommand is used Command string Root string Debug bool Log string LogFormat Format PdeathSignal syscall.Signal Setpgid bool Criu string SystemdCgroup bool Rootless *bool // nil stands for "auto" } // List returns all containers created inside the provided runc root directory func (r *Runc) List(context context.Context) ([]*Container, error) { data, err := cmdOutput(r.command(context, "list", "--format=json"), false) if err != nil { return nil, err } var out []*Container if err := json.Unmarshal(data, &out); err != nil { return nil, err } return out, nil } // State returns the state for the container provided by id func (r *Runc) State(context context.Context, id string) (*Container, error) { data, err := cmdOutput(r.command(context, "state", id), true) if err != nil { return nil, fmt.Errorf("%s: %s", err, data) } var c Container if err := json.Unmarshal(data, &c); err != nil { return nil, err } return &c, nil } type ConsoleSocket interface { Path() string } type CreateOpts struct { IO // PidFile is a path to where a pid file should be created PidFile string ConsoleSocket ConsoleSocket Detach bool NoPivot bool NoNewKeyring bool ExtraFiles []*os.File } func (o *CreateOpts) args() (out []string, err error) { if o.PidFile != "" { abs, err := filepath.Abs(o.PidFile) if err != nil { return nil, err } out = append(out, "--pid-file", abs) } if o.ConsoleSocket != nil { out = append(out, "--console-socket", o.ConsoleSocket.Path()) } if o.NoPivot { out = append(out, "--no-pivot") } if o.NoNewKeyring { out = append(out, "--no-new-keyring") } if o.Detach { out = append(out, "--detach") } if o.ExtraFiles != nil { out = append(out, "--preserve-fds", strconv.Itoa(len(o.ExtraFiles))) } return out, nil } // Create creates a new container and returns its pid if it was created successfully func (r *Runc) Create(context context.Context, id, bundle string, opts *CreateOpts) error { args := []string{"create", "--bundle", bundle} if opts != nil { oargs, err := opts.args() if err != nil { return err } args = append(args, oargs...) } cmd := r.command(context, append(args, id)...) if opts != nil && opts.IO != nil { opts.Set(cmd) } cmd.ExtraFiles = opts.ExtraFiles if cmd.Stdout == nil && cmd.Stderr == nil { data, err := cmdOutput(cmd, true) if err != nil { return fmt.Errorf("%s: %s", err, data) } return nil } ec, err := Monitor.Start(cmd) if err != nil { return err } if opts != nil && opts.IO != nil { if c, ok := opts.IO.(StartCloser); ok { if err := c.CloseAfterStart(); err != nil { return err } } } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return err } // Start will start an already created container func (r *Runc) Start(context context.Context, id string) error { return r.runOrError(r.command(context, "start", id)) } type ExecOpts struct { IO PidFile string ConsoleSocket ConsoleSocket Detach bool } func (o *ExecOpts) args() (out []string, err error) { if o.ConsoleSocket != nil { out = append(out, "--console-socket", o.ConsoleSocket.Path()) } if o.Detach { out = append(out, "--detach") } if o.PidFile != "" { abs, err := filepath.Abs(o.PidFile) if err != nil { return nil, err } out = append(out, "--pid-file", abs) } return out, nil } // Exec executres and additional process inside the container based on a full // OCI Process specification func (r *Runc) Exec(context context.Context, id string, spec specs.Process, opts *ExecOpts) error { f, err := ioutil.TempFile(os.Getenv("XDG_RUNTIME_DIR"), "runc-process") if err != nil { return err } defer os.Remove(f.Name()) err = json.NewEncoder(f).Encode(spec) f.Close() if err != nil { return err } args := []string{"exec", "--process", f.Name()} if opts != nil { oargs, err := opts.args() if err != nil { return err } args = append(args, oargs...) } cmd := r.command(context, append(args, id)...) if opts != nil && opts.IO != nil { opts.Set(cmd) } if cmd.Stdout == nil && cmd.Stderr == nil { data, err := cmdOutput(cmd, true) if err != nil { return fmt.Errorf("%s: %s", err, data) } return nil } ec, err := Monitor.Start(cmd) if err != nil { return err } if opts != nil && opts.IO != nil { if c, ok := opts.IO.(StartCloser); ok { if err := c.CloseAfterStart(); err != nil { return err } } } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return err } // Run runs the create, start, delete lifecycle of the container // and returns its exit status after it has exited func (r *Runc) Run(context context.Context, id, bundle string, opts *CreateOpts) (int, error) { args := []string{"run", "--bundle", bundle} if opts != nil { oargs, err := opts.args() if err != nil { return -1, err } args = append(args, oargs...) } cmd := r.command(context, append(args, id)...) if opts != nil && opts.IO != nil { opts.Set(cmd) } ec, err := Monitor.Start(cmd) if err != nil { return -1, err } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return status, err } type DeleteOpts struct { Force bool } func (o *DeleteOpts) args() (out []string) { if o.Force { out = append(out, "--force") } return out } // Delete deletes the container func (r *Runc) Delete(context context.Context, id string, opts *DeleteOpts) error { args := []string{"delete"} if opts != nil { args = append(args, opts.args()...) } return r.runOrError(r.command(context, append(args, id)...)) } // KillOpts specifies options for killing a container and its processes type KillOpts struct { All bool } func (o *KillOpts) args() (out []string) { if o.All { out = append(out, "--all") } return out } // Kill sends the specified signal to the container func (r *Runc) Kill(context context.Context, id string, sig int, opts *KillOpts) error { args := []string{ "kill", } if opts != nil { args = append(args, opts.args()...) } return r.runOrError(r.command(context, append(args, id, strconv.Itoa(sig))...)) } // Stats return the stats for a container like cpu, memory, and io func (r *Runc) Stats(context context.Context, id string) (*Stats, error) { cmd := r.command(context, "events", "--stats", id) rd, err := cmd.StdoutPipe() if err != nil { return nil, err } ec, err := Monitor.Start(cmd) if err != nil { return nil, err } defer func() { rd.Close() Monitor.Wait(cmd, ec) }() var e Event if err := json.NewDecoder(rd).Decode(&e); err != nil { return nil, err } return e.Stats, nil } // Events returns an event stream from runc for a container with stats and OOM notifications func (r *Runc) Events(context context.Context, id string, interval time.Duration) (chan *Event, error) { cmd := r.command(context, "events", fmt.Sprintf("--interval=%ds", int(interval.Seconds())), id) rd, err := cmd.StdoutPipe() if err != nil { return nil, err } ec, err := Monitor.Start(cmd) if err != nil { rd.Close() return nil, err } var ( dec = json.NewDecoder(rd) c = make(chan *Event, 128) ) go func() { defer func() { close(c) rd.Close() Monitor.Wait(cmd, ec) }() for { var e Event if err := dec.Decode(&e); err != nil { if err == io.EOF { return } e = Event{ Type: "error", Err: err, } } c <- &e } }() return c, nil } // Pause the container with the provided id func (r *Runc) Pause(context context.Context, id string) error { return r.runOrError(r.command(context, "pause", id)) } // Resume the container with the provided id func (r *Runc) Resume(context context.Context, id string) error { return r.runOrError(r.command(context, "resume", id)) } // Ps lists all the processes inside the container returning their pids func (r *Runc) Ps(context context.Context, id string) ([]int, error) { data, err := cmdOutput(r.command(context, "ps", "--format", "json", id), true) if err != nil { return nil, fmt.Errorf("%s: %s", err, data) } var pids []int if err := json.Unmarshal(data, &pids); err != nil { return nil, err } return pids, nil } // Top lists all the processes inside the container returning the full ps data func (r *Runc) Top(context context.Context, id string, psOptions string) (*TopResults, error) { data, err := cmdOutput(r.command(context, "ps", "--format", "table", id, psOptions), true) if err != nil { return nil, fmt.Errorf("%s: %s", err, data) } topResults, err := ParsePSOutput(data) if err != nil { return nil, fmt.Errorf("%s: ", err) } return topResults, nil } type CheckpointOpts struct { // ImagePath is the path for saving the criu image file ImagePath string // WorkDir is the working directory for criu WorkDir string // ParentPath is the path for previous image files from a pre-dump ParentPath string // AllowOpenTCP allows open tcp connections to be checkpointed AllowOpenTCP bool // AllowExternalUnixSockets allows external unix sockets to be checkpointed AllowExternalUnixSockets bool // AllowTerminal allows the terminal(pty) to be checkpointed with a container AllowTerminal bool // CriuPageServer is the address:port for the criu page server CriuPageServer string // FileLocks handle file locks held by the container FileLocks bool // Cgroups is the cgroup mode for how to handle the checkpoint of a container's cgroups Cgroups CgroupMode // EmptyNamespaces creates a namespace for the container but does not save its properties // Provide the namespaces you wish to be checkpointed without their settings on restore EmptyNamespaces []string } type CgroupMode string const ( Soft CgroupMode = "soft" Full CgroupMode = "full" Strict CgroupMode = "strict" ) func (o *CheckpointOpts) args() (out []string) { if o.ImagePath != "" { out = append(out, "--image-path", o.ImagePath) } if o.WorkDir != "" { out = append(out, "--work-path", o.WorkDir) } if o.ParentPath != "" { out = append(out, "--parent-path", o.ParentPath) } if o.AllowOpenTCP { out = append(out, "--tcp-established") } if o.AllowExternalUnixSockets { out = append(out, "--ext-unix-sk") } if o.AllowTerminal { out = append(out, "--shell-job") } if o.CriuPageServer != "" { out = append(out, "--page-server", o.CriuPageServer) } if o.FileLocks { out = append(out, "--file-locks") } if string(o.Cgroups) != "" { out = append(out, "--manage-cgroups-mode", string(o.Cgroups)) } for _, ns := range o.EmptyNamespaces { out = append(out, "--empty-ns", ns) } return out } type CheckpointAction func([]string) []string // LeaveRunning keeps the container running after the checkpoint has been completed func LeaveRunning(args []string) []string { return append(args, "--leave-running") } // PreDump allows a pre-dump of the checkpoint to be made and completed later func PreDump(args []string) []string { return append(args, "--pre-dump") } // Checkpoint allows you to checkpoint a container using criu func (r *Runc) Checkpoint(context context.Context, id string, opts *CheckpointOpts, actions ...CheckpointAction) error { args := []string{"checkpoint"} if opts != nil { args = append(args, opts.args()...) } for _, a := range actions { args = a(args) } return r.runOrError(r.command(context, append(args, id)...)) } type RestoreOpts struct { CheckpointOpts IO Detach bool PidFile string NoSubreaper bool NoPivot bool ConsoleSocket ConsoleSocket } func (o *RestoreOpts) args() ([]string, error) { out := o.CheckpointOpts.args() if o.Detach { out = append(out, "--detach") } if o.PidFile != "" { abs, err := filepath.Abs(o.PidFile) if err != nil { return nil, err } out = append(out, "--pid-file", abs) } if o.ConsoleSocket != nil { out = append(out, "--console-socket", o.ConsoleSocket.Path()) } if o.NoPivot { out = append(out, "--no-pivot") } if o.NoSubreaper { out = append(out, "-no-subreaper") } return out, nil } // Restore restores a container with the provide id from an existing checkpoint func (r *Runc) Restore(context context.Context, id, bundle string, opts *RestoreOpts) (int, error) { args := []string{"restore"} if opts != nil { oargs, err := opts.args() if err != nil { return -1, err } args = append(args, oargs...) } args = append(args, "--bundle", bundle) cmd := r.command(context, append(args, id)...) if opts != nil && opts.IO != nil { opts.Set(cmd) } ec, err := Monitor.Start(cmd) if err != nil { return -1, err } if opts != nil && opts.IO != nil { if c, ok := opts.IO.(StartCloser); ok { if err := c.CloseAfterStart(); err != nil { return -1, err } } } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return status, err } // Update updates the current container with the provided resource spec func (r *Runc) Update(context context.Context, id string, resources *specs.LinuxResources) error { buf := getBuf() defer putBuf(buf) if err := json.NewEncoder(buf).Encode(resources); err != nil { return err } args := []string{"update", "--resources", "-", id} cmd := r.command(context, args...) cmd.Stdin = buf return r.runOrError(cmd) } var ErrParseRuncVersion = errors.New("unable to parse runc version") type Version struct { Runc string Commit string Spec string } // Version returns the runc and runtime-spec versions func (r *Runc) Version(context context.Context) (Version, error) { data, err := cmdOutput(r.command(context, "--version"), false) if err != nil { return Version{}, err } return parseVersion(data) } func parseVersion(data []byte) (Version, error) { var v Version parts := strings.Split(strings.TrimSpace(string(data)), "\n") if len(parts) != 3 { return v, nil } for i, p := range []struct { dest *string split string }{ { dest: &v.Runc, split: "version ", }, { dest: &v.Commit, split: ": ", }, { dest: &v.Spec, split: ": ", }, } { p2 := strings.Split(parts[i], p.split) if len(p2) != 2 { return v, fmt.Errorf("unable to parse version line %q", parts[i]) } *p.dest = p2[1] } return v, nil } func (r *Runc) args() (out []string) { if r.Root != "" { out = append(out, "--root", r.Root) } if r.Debug { out = append(out, "--debug") } if r.Log != "" { out = append(out, "--log", r.Log) } if r.LogFormat != none { out = append(out, "--log-format", string(r.LogFormat)) } if r.Criu != "" { out = append(out, "--criu", r.Criu) } if r.SystemdCgroup { out = append(out, "--systemd-cgroup") } if r.Rootless != nil { // nil stands for "auto" (differs from explicit "false") out = append(out, "--rootless="+strconv.FormatBool(*r.Rootless)) } return out } // runOrError will run the provided command. If an error is // encountered and neither Stdout or Stderr was set the error and the // stderr of the command will be returned in the format of : // func (r *Runc) runOrError(cmd *exec.Cmd) error { if cmd.Stdout != nil || cmd.Stderr != nil { ec, err := Monitor.Start(cmd) if err != nil { return err } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return err } data, err := cmdOutput(cmd, true) if err != nil { return fmt.Errorf("%s: %s", err, data) } return nil } func cmdOutput(cmd *exec.Cmd, combined bool) ([]byte, error) { b := getBuf() defer putBuf(b) cmd.Stdout = b if combined { cmd.Stderr = b } ec, err := Monitor.Start(cmd) if err != nil { return nil, err } status, err := Monitor.Wait(cmd, ec) if err == nil && status != 0 { err = fmt.Errorf("%s did not terminate sucessfully", cmd.Args[0]) } return b.Bytes(), err } golang-github-containerd-go-runc_0.0~git20190911.e029b79/runc_test.go000066400000000000000000000023051353610007200247410ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import "testing" func TestParseVersion(t *testing.T) { const data = `runc version 1.0.0-rc3 commit: 17f3e2a07439a024e54566774d597df9177ee216 spec: 1.0.0-rc5-dev` v, err := parseVersion([]byte(data)) if err != nil { t.Fatal(err) } if v.Runc != "1.0.0-rc3" { t.Errorf("expected runc version 1.0.0-rc3 but received %s", v.Runc) } if v.Commit != "17f3e2a07439a024e54566774d597df9177ee216" { t.Errorf("expected commit 17f3e2a07439a024e54566774d597df9177ee216 but received %s", v.Commit) } if v.Spec != "1.0.0-rc5-dev" { t.Errorf("expected spec version 1.0.0-rc5-dev but received %s", v.Spec) } } golang-github-containerd-go-runc_0.0~git20190911.e029b79/utils.go000066400000000000000000000047231353610007200241010ustar00rootroot00000000000000/* Copyright The containerd Authors. 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 http://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. */ package runc import ( "bytes" "io/ioutil" "strconv" "strings" "sync" "syscall" ) // ReadPidFile reads the pid file at the provided path and returns // the pid or an error if the read and conversion is unsuccessful func ReadPidFile(path string) (int, error) { data, err := ioutil.ReadFile(path) if err != nil { return -1, err } return strconv.Atoi(string(data)) } const exitSignalOffset = 128 // exitStatus returns the correct exit status for a process based on if it // was signaled or exited cleanly func exitStatus(status syscall.WaitStatus) int { if status.Signaled() { return exitSignalOffset + int(status.Signal()) } return status.ExitStatus() } var bytesBufferPool = sync.Pool{ New: func() interface{} { return bytes.NewBuffer(nil) }, } func getBuf() *bytes.Buffer { return bytesBufferPool.Get().(*bytes.Buffer) } func putBuf(b *bytes.Buffer) { b.Reset() bytesBufferPool.Put(b) } // fieldsASCII is similar to strings.Fields but only allows ASCII whitespaces func fieldsASCII(s string) []string { fn := func(r rune) bool { switch r { case '\t', '\n', '\f', '\r', ' ': return true } return false } return strings.FieldsFunc(s, fn) } // ParsePSOutput parses the runtime's ps raw output and returns a TopResults func ParsePSOutput(output []byte) (*TopResults, error) { topResults := &TopResults{} lines := strings.Split(string(output), "\n") topResults.Headers = fieldsASCII(lines[0]) pidIndex := -1 for i, name := range topResults.Headers { if name == "PID" { pidIndex = i } } for _, line := range lines[1:] { if len(line) == 0 { continue } fields := fieldsASCII(line) if fields[pidIndex] == "-" { continue } process := fields[:len(topResults.Headers)-1] process = append(process, strings.Join(fields[len(topResults.Headers)-1:], " ")) topResults.Processes = append(topResults.Processes, process) } return topResults, nil }