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// Copyright 2019 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 proctor runs the test for a particular runtime. It is meant to be
// included in Docker images for all runtime tests.
package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
"golang.org/x/sys/unix"
"gvisor.dev/gvisor/test/runtimes/proctor/lib"
)
var (
runtime = flag.String("runtime", "", "name of runtime")
list = flag.Bool("list", false, "list all available tests")
testNames = flag.String("tests", "", "run a subset of the available tests")
pause = flag.Bool("pause", false, "cause container to pause indefinitely, reaping any zombie children")
)
// setNumFilesLimit changes the NOFILE soft rlimit if it is too high.
func setNumFilesLimit() error {
// In docker containers, the default value of the NOFILE limit is
// 1048576. A few runtime tests (e.g. python:test_subprocess)
// enumerates all possible file descriptors and these tests can fail by
// timeout if the NOFILE limit is too high. On gVisor, syscalls are
// slower so these tests will need even more time to pass.
const nofile = 32768
rLimit := unix.Rlimit{}
err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("failed to get RLIMIT_NOFILE: %v", err)
}
if rLimit.Cur > nofile {
rLimit.Cur = nofile
err := unix.Setrlimit(unix.RLIMIT_NOFILE, &rLimit)
if err != nil {
return fmt.Errorf("failed to set RLIMIT_NOFILE: %v", err)
}
}
return nil
}
func main() {
flag.Parse()
if *pause {
lib.PauseAndReap()
panic("pauseAndReap should never return")
}
if *runtime == "" {
log.Fatalf("runtime flag must be provided")
}
tr, err := lib.TestRunnerForRuntime(*runtime)
if err != nil {
log.Fatalf("%v", err)
}
// List tests.
if *list {
tests, err := tr.ListTests()
if err != nil {
log.Fatalf("failed to list tests: %v", err)
}
for _, test := range tests {
fmt.Println(test)
}
return
}
var tests []string
if *testNames == "" {
// Run every test.
tests, err = tr.ListTests()
if err != nil {
log.Fatalf("failed to get all tests: %v", err)
}
} else {
// Run subset of test.
tests = strings.Split(*testNames, ",")
}
if err := setNumFilesLimit(); err != nil {
log.Fatalf("%v", err)
}
// Run tests.
cmds := tr.TestCmds(tests)
for _, cmd := range cmds {
cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
if err := cmd.Run(); err != nil {
log.Fatalf("FAIL: %v", err)
}
}
}
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