diff options
Diffstat (limited to 'runsc/main.go')
| -rw-r--r-- | runsc/main.go | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/runsc/main.go b/runsc/main.go index 11bc73f75..44ad23cba 100644 --- a/runsc/main.go +++ b/runsc/main.go @@ -60,16 +60,16 @@ var ( straceLogSize = flag.Uint("strace-log-size", 1024, "default size (in bytes) to log data argument blobs") // Flags that control sandbox runtime behavior. - platform = flag.String("platform", "ptrace", "specifies which platform to use: ptrace (default), kvm") - network = flag.String("network", "sandbox", "specifies which network to use: sandbox (default), host, none. Using network inside the sandbox is more secure because it's isolated from the host network.") - gso = flag.Bool("gso", true, "enable generic segmenation offload") - fileAccess = flag.String("file-access", "exclusive", "specifies which filesystem to use for the root mount: exclusive (default), shared. Volume mounts are always shared.") - overlay = flag.Bool("overlay", false, "wrap filesystem mounts with writable overlay. All modifications are stored in memory inside the sandbox.") - watchdogAction = flag.String("watchdog-action", "log", "sets what action the watchdog takes when triggered: log (default), panic.") - panicSignal = flag.Int("panic-signal", -1, "register signal handling that panics. Usually set to SIGUSR2(12) to troubleshoot hangs. -1 disables it.") - profile = flag.Bool("profile", false, "prepares the sandbox to use Golang profiler. Note that enabling profiler loosens the seccomp protection added to the sandbox (DO NOT USE IN PRODUCTION).") - netRaw = flag.Bool("net-raw", false, "enable raw sockets. When false, raw sockets are disabled by removing CAP_NET_RAW from containers (`runsc exec` will still be able to utilize raw sockets). Raw sockets allow malicious containers to craft packets and potentially attack the network.") - + platform = flag.String("platform", "ptrace", "specifies which platform to use: ptrace (default), kvm") + network = flag.String("network", "sandbox", "specifies which network to use: sandbox (default), host, none. Using network inside the sandbox is more secure because it's isolated from the host network.") + gso = flag.Bool("gso", true, "enable generic segmenation offload") + fileAccess = flag.String("file-access", "exclusive", "specifies which filesystem to use for the root mount: exclusive (default), shared. Volume mounts are always shared.") + overlay = flag.Bool("overlay", false, "wrap filesystem mounts with writable overlay. All modifications are stored in memory inside the sandbox.") + watchdogAction = flag.String("watchdog-action", "log", "sets what action the watchdog takes when triggered: log (default), panic.") + panicSignal = flag.Int("panic-signal", -1, "register signal handling that panics. Usually set to SIGUSR2(12) to troubleshoot hangs. -1 disables it.") + profile = flag.Bool("profile", false, "prepares the sandbox to use Golang profiler. Note that enabling profiler loosens the seccomp protection added to the sandbox (DO NOT USE IN PRODUCTION).") + netRaw = flag.Bool("net-raw", false, "enable raw sockets. When false, raw sockets are disabled by removing CAP_NET_RAW from containers (`runsc exec` will still be able to utilize raw sockets). Raw sockets allow malicious containers to craft packets and potentially attack the network.") + numNetworkChannels = flag.Int("num-network-channels", 1, "number of underlying channels(FDs) to use for network link endpoints.") testOnlyAllowRunAsCurrentUserWithoutChroot = flag.Bool("TESTONLY-unsafe-nonroot", false, "TEST ONLY; do not ever use! This skips many security measures that isolate the host from the sandbox.") ) @@ -141,6 +141,10 @@ func main() { cmd.Fatalf("%v", err) } + if *numNetworkChannels <= 0 { + cmd.Fatalf("num_network_channels must be > 0, got: %d", *numNetworkChannels) + } + // Create a new Config from the flags. conf := &boot.Config{ RootDir: *rootDir, @@ -162,6 +166,7 @@ func main() { ProfileEnable: *profile, EnableRaw: *netRaw, TestOnlyAllowRunAsCurrentUserWithoutChroot: *testOnlyAllowRunAsCurrentUserWithoutChroot, + NumNetworkChannels: *numNetworkChannels, } if len(*straceSyscalls) != 0 { conf.StraceSyscalls = strings.Split(*straceSyscalls, ",") |