func lastCap() capability.Cap {
last := capability.CAP_LAST_CAP
// hack for RHEL6 which has no /proc/sys/kernel/cap_last_cap
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
return last
}
func init() {
capabilityMap = make(map[string]capability.Cap)
last := capability.CAP_LAST_CAP
// workaround for RHEL6 which has no /proc/sys/kernel/cap_last_cap
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
for _, cap := range capability.List() {
if cap > last {
continue
}
capKey := fmt.Sprintf("CAP_%s", strings.ToUpper(cap.String()))
capabilityMap[capKey] = cap
}
}
func init() {
last := capability.CAP_LAST_CAP
// hack for RHEL6 which has no /proc/sys/kernel/cap_last_cap
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
for _, cap := range capability.List() {
if cap > last {
continue
}
capabilityList = append(capabilityList,
&CapabilityMapping{
Key: strings.ToUpper(cap.String()),
Value: cap,
},
)
}
}
func validateCapabilities(spec *specs.LinuxSpec, rspec *specs.LinuxRuntimeSpec) error {
fmt.Println("validating capabilities")
capabilityMap := make(map[string]capability.Cap)
expectedCaps := make(map[capability.Cap]bool)
last := capability.CAP_LAST_CAP
// workaround for RHEL6 which has no /proc/sys/kernel/cap_last_cap
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
for _, cap := range capability.List() {
if cap > last {
continue
}
capKey := fmt.Sprintf("CAP_%s", strings.ToUpper(cap.String()))
capabilityMap[capKey] = cap
expectedCaps[cap] = false
}
for _, ec := range spec.Linux.Capabilities {
cap := capabilityMap[ec]
expectedCaps[cap] = true
}
processCaps, err := capability.NewPid(1)
if err != nil {
return err
}
for _, cap := range capability.List() {
expectedSet := expectedCaps[cap]
actuallySet := processCaps.Get(capability.EFFECTIVE, cap)
if expectedSet != actuallySet {
if expectedSet {
return fmt.Errorf("Expected Capability %v not set for process", cap.String())
} else {
return fmt.Errorf("Unexpected Capability %v set for process", cap.String())
}
}
}
return nil
}
func validateCapabilities(spec *rspec.Spec) error {
logrus.Debugf("validating capabilities")
last := capability.CAP_LAST_CAP
// workaround for RHEL6 which has no /proc/sys/kernel/cap_last_cap
if last == capability.Cap(63) {
last = capability.CAP_BLOCK_SUSPEND
}
processCaps, err := capability.NewPid(1)
if err != nil {
return err
}
expectedCaps := make(map[string]bool)
for _, ec := range spec.Process.Capabilities {
expectedCaps[ec] = true
}
for _, cap := range capability.List() {
if cap > last {
continue
}
capKey := fmt.Sprintf("CAP_%s", strings.ToUpper(cap.String()))
expectedSet := expectedCaps[capKey]
actuallySet := processCaps.Get(capability.EFFECTIVE, cap)
if expectedSet != actuallySet {
if expectedSet {
return fmt.Errorf("Expected Capability %v not set for process", cap.String())
}
return fmt.Errorf("Unexpected Capability %v set for process", cap.String())
}
}
return nil
}
func main() {
globalFlagset.Parse(os.Args[1:])
args := globalFlagset.Args()
if len(args) > 0 {
fmt.Fprintln(os.Stderr, "Wrong parameters")
os.Exit(1)
}
if globalFlags.PrintNoNewPrivs {
r1, _, err := syscall.Syscall(
syscall.SYS_PRCTL,
uintptr(unix.PR_GET_NO_NEW_PRIVS),
uintptr(0), uintptr(0),
)
fmt.Printf("no_new_privs: %v err: %v\n", r1, err)
}
if globalFlags.CheckMknod != "" {
/* format: c:5:2:name */
dev := strings.SplitN(globalFlags.CheckMknod, ":", 4)
if len(dev) < 4 {
fmt.Fprintln(os.Stderr, "Not enough parameters for mknod")
os.Exit(1)
}
typ := dev[0]
major, err := strconv.Atoi(dev[1])
if err != nil {
fmt.Fprintln(os.Stderr, "Wrong major")
os.Exit(1)
}
minor, err := strconv.Atoi(dev[2])
if err != nil {
fmt.Fprintln(os.Stderr, "Wrong minor")
os.Exit(1)
}
nodeName := dev[3]
majorMinor := device.Makedev(uint(major), uint(minor))
mode := uint32(0777)
switch typ {
case "c":
mode |= syscall.S_IFCHR
case "b":
mode |= syscall.S_IFBLK
default:
fmt.Fprintln(os.Stderr, "Wrong device node type")
os.Exit(1)
}
if err := syscall.Mknod(nodeName, mode, int(majorMinor)); err != nil {
fmt.Fprintf(os.Stderr, "mknod %s: fail: %v\n", nodeName, err)
os.Exit(1)
} else {
fmt.Printf("mknod %s: succeed\n", nodeName)
os.Exit(0)
}
}
if globalFlags.SilentSigterm {
terminateCh := make(chan os.Signal, 1)
signal.Notify(terminateCh, syscall.SIGTERM)
go func() {
<-terminateCh
os.Exit(0)
}()
}
if globalFlags.PreSleep >= 0 {
time.Sleep(time.Duration(globalFlags.PreSleep) * time.Second)
}
if globalFlags.ReadStdin {
reader := bufio.NewReader(os.Stdin)
fmt.Printf("Enter text:\n")
text, _ := reader.ReadString('\n')
fmt.Printf("Received text: %s\n", text)
}
if globalFlags.CheckTty {
fd := int(os.Stdin.Fd())
var termios syscall.Termios
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), syscall.TCGETS, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
if err == 0 {
fmt.Printf("stdin is a terminal\n")
} else {
fmt.Printf("stdin is not a terminal\n")
}
}
if globalFlags.CheckPath {
envBytes, err := ioutil.ReadFile("/proc/self/environ")
if err != nil {
fmt.Fprintf(os.Stderr, "Error reading environment from \"/proc/self/environ\": %v\n", err)
os.Exit(1)
}
for _, v := range bytes.Split(envBytes, []byte{0}) {
if len(v) == 0 {
continue
}
if strings.HasPrefix(string(v), "PATH=") {
if strings.Contains(string(v), "\n") {
fmt.Fprintf(os.Stderr, "Malformed PATH: found new line")
os.Exit(1)
} else {
fmt.Printf("PATH is good\n")
os.Exit(0)
}
} else {
continue
}
}
fmt.Fprintf(os.Stderr, "PATH not found")
os.Exit(1)
}
if globalFlags.PrintExec {
fmt.Fprintf(os.Stdout, "inspect execed as: %s\n", os.Args[0])
}
if globalFlags.PrintMsg != "" {
fmt.Fprintf(os.Stdout, "%s\n", globalFlags.PrintMsg)
messageLoopStr := os.Getenv("MESSAGE_LOOP")
messageLoop, err := strconv.Atoi(messageLoopStr)
if err == nil {
for i := 0; i < messageLoop; i++ {
time.Sleep(time.Second)
fmt.Fprintf(os.Stdout, "%s\n", globalFlags.PrintMsg)
}
}
}
if globalFlags.PrintEnv != "" {
fmt.Fprintf(os.Stdout, "%s=%s\n", globalFlags.PrintEnv, os.Getenv(globalFlags.PrintEnv))
}
if globalFlags.PrintCapsPid >= 0 {
caps, err := capability.NewPid(globalFlags.PrintCapsPid)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get caps: %v\n", err)
os.Exit(1)
}
fmt.Printf("Capability set: effective: %s (%s)\n", caps.StringCap(capability.EFFECTIVE), globalFlags.SuffixMsg)
fmt.Printf("Capability set: permitted: %s (%s)\n", caps.StringCap(capability.PERMITTED), globalFlags.SuffixMsg)
fmt.Printf("Capability set: inheritable: %s (%s)\n", caps.StringCap(capability.INHERITABLE), globalFlags.SuffixMsg)
fmt.Printf("Capability set: bounding: %s (%s)\n", caps.StringCap(capability.BOUNDING), globalFlags.SuffixMsg)
if capStr := os.Getenv("CAPABILITY"); capStr != "" {
capInt, err := strconv.Atoi(capStr)
if err != nil {
fmt.Fprintf(os.Stderr, "Environment variable $CAPABILITY is not a valid capability number: %v\n", err)
os.Exit(1)
}
c := capability.Cap(capInt)
if caps.Get(capability.BOUNDING, c) {
fmt.Printf("%v=enabled (%s)\n", c.String(), globalFlags.SuffixMsg)
} else {
fmt.Printf("%v=disabled (%s)\n", c.String(), globalFlags.SuffixMsg)
}
}
}
if globalFlags.PrintUser {
fmt.Printf("User: uid=%d euid=%d gid=%d egid=%d\n", os.Getuid(), os.Geteuid(), os.Getgid(), os.Getegid())
}
if globalFlags.PrintGroups {
gids, err := os.Getgroups()
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting groups: %v\n", err)
os.Exit(1)
}
// getgroups(2): It is unspecified whether the effective group ID of
// the calling process is included in the returned list. (Thus, an
// application should also call getegid(2) and add or remove the
// resulting value.)
egid := os.Getegid()
if !in(gids, egid) {
gids = append(gids, egid)
sort.Ints(gids)
}
var b bytes.Buffer
for _, gid := range gids {
b.WriteString(fmt.Sprintf("%d ", gid))
}
fmt.Printf("Groups: %s\n", b.String())
}
if globalFlags.WriteFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
content := os.Getenv("CONTENT")
if globalFlags.Content != "" {
content = globalFlags.Content
}
err := ioutil.WriteFile(fileName, []byte(content), 0600)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot write to file %q: %v\n", fileName, err)
os.Exit(1)
}
}
if globalFlags.ReadFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
dat, err := ioutil.ReadFile(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot read file %q: %v\n", fileName, err)
os.Exit(1)
}
fmt.Print("<<<")
fmt.Print(string(dat))
fmt.Print(">>>\n")
}
if globalFlags.StatFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
fi, err := os.Stat(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot stat file %q: %v\n", fileName, err)
os.Exit(1)
}
fmt.Printf("%s: mode: %s\n", fileName, fi.Mode().String())
fmt.Printf("%s: user: %v\n", fileName, fi.Sys().(*syscall.Stat_t).Uid)
fmt.Printf("%s: group: %v\n", fileName, fi.Sys().(*syscall.Stat_t).Gid)
}
if globalFlags.PrintCwd {
wd, err := os.Getwd()
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get working directory: %v\n", err)
os.Exit(1)
}
fmt.Printf("cwd: %s\n", wd)
}
if globalFlags.Sleep >= 0 {
time.Sleep(time.Duration(globalFlags.Sleep) * time.Second)
}
if globalFlags.PrintMemoryLimit {
memCgroupPath, err := cgroup.GetOwnCgroupPath("memory")
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting own memory cgroup path: %v\n", err)
os.Exit(1)
}
// we use /proc/1/root to escape the chroot we're in and read our
// memory limit
limitPath := filepath.Join("/proc/1/root/sys/fs/cgroup/memory", memCgroupPath, "memory.limit_in_bytes")
limit, err := ioutil.ReadFile(limitPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read memory.limit_in_bytes\n")
os.Exit(1)
}
fmt.Printf("Memory Limit: %s\n", string(limit))
}
if globalFlags.PrintCPUQuota {
cpuCgroupPath, err := cgroup.GetOwnCgroupPath("cpu")
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting own cpu cgroup path: %v\n", err)
os.Exit(1)
}
// we use /proc/1/root to escape the chroot we're in and read our
// cpu quota
periodPath := filepath.Join("/proc/1/root/sys/fs/cgroup/cpu", cpuCgroupPath, "cpu.cfs_period_us")
periodBytes, err := ioutil.ReadFile(periodPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read cpu.cpu_period_us\n")
os.Exit(1)
}
quotaPath := filepath.Join("/proc/1/root/sys/fs/cgroup/cpu", cpuCgroupPath, "cpu.cfs_quota_us")
quotaBytes, err := ioutil.ReadFile(quotaPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read cpu.cpu_quota_us\n")
os.Exit(1)
}
period, err := strconv.Atoi(strings.Trim(string(periodBytes), "\n"))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
quota, err := strconv.Atoi(strings.Trim(string(quotaBytes), "\n"))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
quotaMilliCores := quota * 1000 / period
fmt.Printf("CPU Quota: %s\n", strconv.Itoa(quotaMilliCores))
}
if globalFlags.CheckCgroupMounts {
rootCgroupPath := "/proc/1/root/sys/fs/cgroup"
testPaths := []string{rootCgroupPath}
// test a couple of controllers if they're available
if _, err := os.Stat(filepath.Join(rootCgroupPath, "memory")); err == nil {
testPaths = append(testPaths, filepath.Join(rootCgroupPath, "memory"))
}
if _, err := os.Stat(filepath.Join(rootCgroupPath, "cpu")); err == nil {
testPaths = append(testPaths, filepath.Join(rootCgroupPath, "cpu"))
}
for _, p := range testPaths {
if err := syscall.Mkdir(filepath.Join(p, "test"), 0600); err == nil || err != syscall.EROFS {
fmt.Fprintf(os.Stderr, "check-cgroups: FAIL (%v)", err)
os.Exit(1)
}
}
fmt.Println("check-cgroups: SUCCESS")
}
if globalFlags.PrintNetNS {
ns, err := os.Readlink("/proc/self/ns/net")
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("NetNS: %s\n", ns)
}
if globalFlags.PrintIPv4 != "" {
iface := globalFlags.PrintIPv4
ips, err := testutils.GetIPsv4(iface)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
if len(ips) == 0 {
fmt.Fprintf(os.Stderr, "No IPv4 found for interface %+v:\n", iface)
os.Exit(1)
}
fmt.Printf("%v IPv4: %s\n", iface, ips[0])
}
if globalFlags.PrintDefaultGWv4 {
gw, err := testutils.GetDefaultGWv4()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("DefaultGWv4: %s\n", gw)
}
if globalFlags.PrintDefaultGWv6 {
gw, err := testutils.GetDefaultGWv6()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("DefaultGWv6: %s\n", gw)
}
if globalFlags.PrintGWv4 != "" {
// TODO: GetGW not implemented yet
iface := globalFlags.PrintGWv4
gw, err := testutils.GetGWv4(iface)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("%v GWv4: %s\n", iface, gw)
}
if globalFlags.PrintIPv6 != "" {
// TODO
}
if globalFlags.PrintGWv6 != "" {
// TODO
}
if globalFlags.PrintHostname {
hostname, err := os.Hostname()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Hostname: %s\n", hostname)
}
if globalFlags.ServeHTTP != "" {
err := testutils.HTTPServe(globalFlags.ServeHTTP, globalFlags.ServeHTTPTimeout)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
}
if globalFlags.GetHTTP != "" {
body, err := testutils.HTTPGet(globalFlags.GetHTTP)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("HTTP-Get received: %s\n", body)
}
if globalFlags.PrintIfaceCount {
ifaceCount, err := testutils.GetIfaceCount()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Interface count: %d\n", ifaceCount)
}
if globalFlags.PrintAppAnnotation != "" {
mdsUrl, appName := os.Getenv("AC_METADATA_URL"), os.Getenv("AC_APP_NAME")
body, err := testutils.HTTPGet(fmt.Sprintf("%s/acMetadata/v1/apps/%s/annotations/%s", mdsUrl, appName, globalFlags.PrintAppAnnotation))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Annotation %s=%s\n", globalFlags.PrintAppAnnotation, body)
}
if globalFlags.CheckMountNS {
appMountNS, err := os.Readlink("/proc/self/ns/mnt")
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
s1MountNS, err := os.Readlink("/proc/1/ns/mnt")
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
if appMountNS != s1MountNS {
fmt.Println("check-mountns: DIFFERENT")
} else {
fmt.Println("check-mountns: IDENTICAL")
os.Exit(1)
}
}
os.Exit(globalFlags.ExitCode)
}
func main() {
globalFlagset.Parse(os.Args[1:])
args := globalFlagset.Args()
if len(args) > 0 {
fmt.Fprintln(os.Stderr, "Wrong parameters")
os.Exit(1)
}
if globalFlags.PreSleep >= 0 {
time.Sleep(time.Duration(globalFlags.PreSleep) * time.Second)
}
if globalFlags.ReadStdin {
reader := bufio.NewReader(os.Stdin)
fmt.Printf("Enter text:\n")
text, _ := reader.ReadString('\n')
fmt.Printf("Received text: %s\n", text)
}
if globalFlags.CheckTty {
fd := int(os.Stdin.Fd())
var termios syscall.Termios
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), syscall.TCGETS, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
if err == 0 {
fmt.Printf("stdin is a terminal\n")
} else {
fmt.Printf("stdin is not a terminal\n")
}
}
if globalFlags.PrintExec {
fmt.Fprintf(os.Stdout, "inspect execed as: %s\n", os.Args[0])
}
if globalFlags.PrintMsg != "" {
fmt.Fprintf(os.Stdout, "%s\n", globalFlags.PrintMsg)
messageLoopStr := os.Getenv("MESSAGE_LOOP")
messageLoop, err := strconv.Atoi(messageLoopStr)
if err == nil {
for i := 0; i < messageLoop; i++ {
time.Sleep(time.Second)
fmt.Fprintf(os.Stdout, "%s\n", globalFlags.PrintMsg)
}
}
}
if globalFlags.PrintEnv != "" {
fmt.Fprintf(os.Stdout, "%s=%s\n", globalFlags.PrintEnv, os.Getenv(globalFlags.PrintEnv))
}
if globalFlags.PrintCapsPid >= 0 {
caps, err := capability.NewPid(globalFlags.PrintCapsPid)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get caps: %v\n", err)
os.Exit(1)
}
fmt.Printf("Capability set: effective: %s\n", caps.StringCap(capability.EFFECTIVE))
fmt.Printf("Capability set: permitted: %s\n", caps.StringCap(capability.PERMITTED))
fmt.Printf("Capability set: inheritable: %s\n", caps.StringCap(capability.INHERITABLE))
fmt.Printf("Capability set: bounding: %s\n", caps.StringCap(capability.BOUNDING))
if capStr := os.Getenv("CAPABILITY"); capStr != "" {
capInt, err := strconv.Atoi(capStr)
if err != nil {
fmt.Fprintf(os.Stderr, "Environment variable $CAPABILITY is not a valid capability number: %v\n", err)
os.Exit(1)
}
c := capability.Cap(capInt)
if caps.Get(capability.BOUNDING, c) {
fmt.Printf("%v=enabled\n", c.String())
} else {
fmt.Printf("%v=disabled\n", c.String())
}
}
}
if globalFlags.PrintUser {
fmt.Printf("User: uid=%d euid=%d gid=%d egid=%d\n", os.Getuid(), os.Geteuid(), os.Getgid(), os.Getegid())
}
if globalFlags.PrintGroups {
gids, err := os.Getgroups()
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting groups: %v\n", err)
os.Exit(1)
}
// getgroups(2): It is unspecified whether the effective group ID of
// the calling process is included in the returned list. (Thus, an
// application should also call getegid(2) and add or remove the
// resulting value.)
egid := os.Getegid()
if !in(gids, egid) {
gids = append(gids, egid)
sort.Ints(gids)
}
var b bytes.Buffer
for _, gid := range gids {
b.WriteString(fmt.Sprintf("%d ", gid))
}
fmt.Printf("Groups: %s\n", b.String())
}
if globalFlags.WriteFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
content := os.Getenv("CONTENT")
if globalFlags.Content != "" {
content = globalFlags.Content
}
err := ioutil.WriteFile(fileName, []byte(content), 0600)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot write to file %q: %v\n", fileName, err)
os.Exit(1)
}
}
if globalFlags.ReadFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
dat, err := ioutil.ReadFile(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot read file %q: %v\n", fileName, err)
os.Exit(1)
}
fmt.Print("<<<")
fmt.Print(string(dat))
fmt.Print(">>>\n")
}
if globalFlags.StatFile {
fileName := os.Getenv("FILE")
if globalFlags.FileName != "" {
fileName = globalFlags.FileName
}
fi, err := os.Stat(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot stat file %q: %v\n", fileName, err)
os.Exit(1)
}
fmt.Printf("%s: mode: %s\n", fileName, fi.Mode().String())
fmt.Printf("%s: user: %v\n", fileName, fi.Sys().(*syscall.Stat_t).Uid)
fmt.Printf("%s: group: %v\n", fileName, fi.Sys().(*syscall.Stat_t).Gid)
}
if globalFlags.CheckCwd != "" {
wd, err := os.Getwd()
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get working directory: %v\n", err)
os.Exit(1)
}
if wd != globalFlags.CheckCwd {
fmt.Fprintf(os.Stderr, "Working directory: %q. Expected: %q.\n", wd, globalFlags.CheckCwd)
os.Exit(1)
}
}
if globalFlags.Sleep >= 0 {
time.Sleep(time.Duration(globalFlags.Sleep) * time.Second)
}
if globalFlags.PrintMemoryLimit {
memCgroupPath, err := cgroup.GetOwnCgroupPath("memory")
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting own memory cgroup path: %v\n", err)
os.Exit(1)
}
// we use /proc/1/root to escape the chroot we're in and read our
// memory limit
limitPath := filepath.Join("/proc/1/root/sys/fs/cgroup/memory", memCgroupPath, "memory.limit_in_bytes")
limit, err := ioutil.ReadFile(limitPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read memory.limit_in_bytes\n")
os.Exit(1)
}
fmt.Printf("Memory Limit: %s\n", string(limit))
}
if globalFlags.PrintCPUQuota {
cpuCgroupPath, err := cgroup.GetOwnCgroupPath("cpu")
if err != nil {
fmt.Fprintf(os.Stderr, "Error getting own cpu cgroup path: %v\n", err)
os.Exit(1)
}
// we use /proc/1/root to escape the chroot we're in and read our
// cpu quota
periodPath := filepath.Join("/proc/1/root/sys/fs/cgroup/cpu", cpuCgroupPath, "cpu.cfs_period_us")
periodBytes, err := ioutil.ReadFile(periodPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read cpu.cpu_period_us\n")
os.Exit(1)
}
quotaPath := filepath.Join("/proc/1/root/sys/fs/cgroup/cpu", cpuCgroupPath, "cpu.cfs_quota_us")
quotaBytes, err := ioutil.ReadFile(quotaPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't read cpu.cpu_quota_us\n")
os.Exit(1)
}
period, err := strconv.Atoi(strings.Trim(string(periodBytes), "\n"))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
quota, err := strconv.Atoi(strings.Trim(string(quotaBytes), "\n"))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
quotaMilliCores := quota * 1000 / period
fmt.Printf("CPU Quota: %s\n", strconv.Itoa(quotaMilliCores))
}
if globalFlags.CheckCgroupMounts {
rootCgroupPath := "/proc/1/root/sys/fs/cgroup"
testPaths := []string{rootCgroupPath}
// test a couple of controllers if they're available
if cgroup.IsIsolatorSupported("memory") {
testPaths = append(testPaths, filepath.Join(rootCgroupPath, "memory"))
}
if cgroup.IsIsolatorSupported("cpu") {
testPaths = append(testPaths, filepath.Join(rootCgroupPath, "cpu"))
}
for _, p := range testPaths {
if err := syscall.Mkdir(filepath.Join(p, "test"), 0600); err == nil || err != syscall.EROFS {
fmt.Println("check-cgroups: FAIL")
os.Exit(1)
}
}
fmt.Println("check-cgroups: SUCCESS")
}
if globalFlags.PrintNetNS {
ns, err := os.Readlink("/proc/self/ns/net")
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("NetNS: %s\n", ns)
}
if globalFlags.PrintIPv4 != "" {
iface := globalFlags.PrintIPv4
ips, err := testutils.GetIPsv4(iface)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("%v IPv4: %s\n", iface, ips[0])
}
if globalFlags.PrintDefaultGWv4 {
gw, err := testutils.GetDefaultGWv4()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("DefaultGWv4: %s\n", gw)
}
if globalFlags.PrintDefaultGWv6 {
gw, err := testutils.GetDefaultGWv6()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("DefaultGWv6: %s\n", gw)
}
if globalFlags.PrintGWv4 != "" {
// TODO: GetGW not implemented yet
iface := globalFlags.PrintGWv4
gw, err := testutils.GetGWv4(iface)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("%v GWv4: %s\n", iface, gw)
}
if globalFlags.PrintIPv6 != "" {
// TODO
}
if globalFlags.PrintGWv6 != "" {
// TODO
}
if globalFlags.PrintHostname {
hostname, err := os.Hostname()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Hostname: %s\n", hostname)
}
if globalFlags.ServeHTTP != "" {
err := testutils.HTTPServe(globalFlags.ServeHTTP, globalFlags.ServeHTTPTimeout)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
}
if globalFlags.GetHTTP != "" {
body, err := testutils.HTTPGet(globalFlags.GetHTTP)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("HTTP-Get received: %s\n", body)
}
if globalFlags.PrintIfaceCount {
ifaceCount, err := testutils.GetIfaceCount()
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Interface count: %d\n", ifaceCount)
}
if globalFlags.PrintAppAnnotation != "" {
mdsUrl, appName := os.Getenv("AC_METADATA_URL"), os.Getenv("AC_APP_NAME")
body, err := testutils.HTTPGet(fmt.Sprintf("%s/acMetadata/v1/apps/%s/annotations/%s", mdsUrl, appName, globalFlags.PrintAppAnnotation))
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
fmt.Printf("Annotation %s=%s\n", globalFlags.PrintAppAnnotation, body)
}
os.Exit(globalFlags.ExitCode)
}