diff options
Diffstat (limited to 'runsc/container/test_app/test_app.go')
-rw-r--r-- | runsc/container/test_app/test_app.go | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/runsc/container/test_app/test_app.go b/runsc/container/test_app/test_app.go deleted file mode 100644 index b7fc6498f..000000000 --- a/runsc/container/test_app/test_app.go +++ /dev/null @@ -1,287 +0,0 @@ -// Copyright 2018 The gVisor 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. - -// Binary test_app is like a swiss knife for tests that need to run anything -// inside the sandbox. New functionality can be added with new commands. -package main - -import ( - "context" - "fmt" - "log" - "net" - "os" - "os/exec" - "strconv" - sys "syscall" - "time" - - "flag" - "github.com/google/subcommands" - "gvisor.dev/gvisor/runsc/test/testutil" -) - -func main() { - subcommands.Register(subcommands.HelpCommand(), "") - subcommands.Register(subcommands.FlagsCommand(), "") - subcommands.Register(new(uds), "") - subcommands.Register(new(taskTree), "") - subcommands.Register(new(forkBomb), "") - subcommands.Register(new(reaper), "") - subcommands.Register(new(syscall), "") - - flag.Parse() - - exitCode := subcommands.Execute(context.Background()) - os.Exit(int(exitCode)) -} - -type uds struct { - fileName string - socketPath string -} - -// Name implements subcommands.Command.Name. -func (*uds) Name() string { - return "uds" -} - -// Synopsis implements subcommands.Command.Synopsys. -func (*uds) Synopsis() string { - return "creates unix domain socket client and server. Client sends a contant flow of sequential numbers. Server prints them to --file" -} - -// Usage implements subcommands.Command.Usage. -func (*uds) Usage() string { - return "uds <flags>" -} - -// SetFlags implements subcommands.Command.SetFlags. -func (c *uds) SetFlags(f *flag.FlagSet) { - f.StringVar(&c.fileName, "file", "", "name of output file") - f.StringVar(&c.socketPath, "socket", "", "path to socket") -} - -// Execute implements subcommands.Command.Execute. -func (c *uds) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus { - if c.fileName == "" || c.socketPath == "" { - log.Fatal("Flags cannot be empty, given: fileName: %q, socketPath: %q", c.fileName, c.socketPath) - return subcommands.ExitFailure - } - outputFile, err := os.OpenFile(c.fileName, os.O_WRONLY|os.O_CREATE, 0666) - if err != nil { - log.Fatal("error opening output file:", err) - } - - defer os.Remove(c.socketPath) - - listener, err := net.Listen("unix", c.socketPath) - if err != nil { - log.Fatal("error listening on socket %q:", c.socketPath, err) - } - - go server(listener, outputFile) - for i := 0; ; i++ { - conn, err := net.Dial("unix", c.socketPath) - if err != nil { - log.Fatal("error dialing:", err) - } - if _, err := conn.Write([]byte(strconv.Itoa(i))); err != nil { - log.Fatal("error writing:", err) - } - conn.Close() - time.Sleep(100 * time.Millisecond) - } -} - -func server(listener net.Listener, out *os.File) { - buf := make([]byte, 16) - - for { - c, err := listener.Accept() - if err != nil { - log.Fatal("error accepting connection:", err) - } - nr, err := c.Read(buf) - if err != nil { - log.Fatal("error reading from buf:", err) - } - data := buf[0:nr] - fmt.Fprint(out, string(data)+"\n") - } -} - -type taskTree struct { - depth int - width int - pause bool -} - -// Name implements subcommands.Command. -func (*taskTree) Name() string { - return "task-tree" -} - -// Synopsis implements subcommands.Command. -func (*taskTree) Synopsis() string { - return "creates a tree of tasks" -} - -// Usage implements subcommands.Command. -func (*taskTree) Usage() string { - return "task-tree <flags>" -} - -// SetFlags implements subcommands.Command. -func (c *taskTree) SetFlags(f *flag.FlagSet) { - f.IntVar(&c.depth, "depth", 1, "number of levels to create") - f.IntVar(&c.width, "width", 1, "number of tasks at each level") - f.BoolVar(&c.pause, "pause", false, "whether the tasks should pause perpetually") -} - -// Execute implements subcommands.Command. -func (c *taskTree) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus { - stop := testutil.StartReaper() - defer stop() - - if c.depth == 0 { - log.Printf("Child sleeping, PID: %d\n", os.Getpid()) - select {} - } - log.Printf("Parent %d sleeping, PID: %d\n", c.depth, os.Getpid()) - - var cmds []*exec.Cmd - for i := 0; i < c.width; i++ { - cmd := exec.Command( - "/proc/self/exe", c.Name(), - "--depth", strconv.Itoa(c.depth-1), - "--width", strconv.Itoa(c.width), - "--pause", strconv.FormatBool(c.pause)) - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - - if err := cmd.Start(); err != nil { - log.Fatal("failed to call self:", err) - } - cmds = append(cmds, cmd) - } - - for _, c := range cmds { - c.Wait() - } - - if c.pause { - select {} - } - - return subcommands.ExitSuccess -} - -type forkBomb struct { - delay time.Duration -} - -// Name implements subcommands.Command. -func (*forkBomb) Name() string { - return "fork-bomb" -} - -// Synopsis implements subcommands.Command. -func (*forkBomb) Synopsis() string { - return "creates child process until the end of times" -} - -// Usage implements subcommands.Command. -func (*forkBomb) Usage() string { - return "fork-bomb <flags>" -} - -// SetFlags implements subcommands.Command. -func (c *forkBomb) SetFlags(f *flag.FlagSet) { - f.DurationVar(&c.delay, "delay", 100*time.Millisecond, "amount of time to delay creation of child") -} - -// Execute implements subcommands.Command. -func (c *forkBomb) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus { - time.Sleep(c.delay) - - cmd := exec.Command("/proc/self/exe", c.Name()) - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - if err := cmd.Run(); err != nil { - log.Fatal("failed to call self:", err) - } - return subcommands.ExitSuccess -} - -type reaper struct{} - -// Name implements subcommands.Command. -func (*reaper) Name() string { - return "reaper" -} - -// Synopsis implements subcommands.Command. -func (*reaper) Synopsis() string { - return "reaps all children in a loop" -} - -// Usage implements subcommands.Command. -func (*reaper) Usage() string { - return "reaper <flags>" -} - -// SetFlags implements subcommands.Command. -func (*reaper) SetFlags(*flag.FlagSet) {} - -// Execute implements subcommands.Command. -func (c *reaper) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus { - stop := testutil.StartReaper() - defer stop() - select {} -} - -type syscall struct { - sysno uint64 -} - -// Name implements subcommands.Command. -func (*syscall) Name() string { - return "syscall" -} - -// Synopsis implements subcommands.Command. -func (*syscall) Synopsis() string { - return "syscall makes a syscall" -} - -// Usage implements subcommands.Command. -func (*syscall) Usage() string { - return "syscall <flags>" -} - -// SetFlags implements subcommands.Command. -func (s *syscall) SetFlags(f *flag.FlagSet) { - f.Uint64Var(&s.sysno, "syscall", 0, "syscall to call") -} - -// Execute implements subcommands.Command. -func (s *syscall) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus { - if _, _, errno := sys.Syscall(uintptr(s.sysno), 0, 0, 0); errno != 0 { - fmt.Printf("syscall(%d, 0, 0...) failed: %v\n", s.sysno, errno) - } else { - fmt.Printf("syscall(%d, 0, 0...) success\n", s.sysno) - } - return subcommands.ExitSuccess -} |