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2019-06-06Copy up parent when binding UDS on overlayfsFabricio Voznika
Overlayfs was expecting the parent to exist when bind(2) was called, which may not be the case. The fix is to copy the parent directory to the upper layer before binding the UDS. There is not good place to add tests for it. Syscall tests would be ideal, but it's hard to guarantee that the directory where the socket is created hasn't been touched before (and thus copied the parent to the upper layer). Added it to runsc integration tests for now. If it turns out we have lots of these kind of tests, we can consider moving them somewhere more appropriate. PiperOrigin-RevId: 251954156
2019-06-06Send error message to docker/kubectl exec on failureFabricio Voznika
Containerd uses the last error message sent to the log to print as failure cause for create/exec. This required a few changes in the logging logic for runsc: - cmd.Errorf/Fatalf: now writes a message with 'error' level to containerd log, in addition to stderr and debug logs, like before. - log.Infof/Warningf/Fatalf: are not sent to containerd log anymore. They are mostly used for debugging and not useful to containerd. In most cases, --debug-log is enabled and this avoids the logs messages from being duplicated. - stderr is not used as default log destination anymore. Some commands assume stdio is for the container/process running inside the sandbox and it's better to never use it for logging. By default, logs are supressed now. PiperOrigin-RevId: 251881815
2019-05-13gvisor/runsc/tests: set timeout for http.Get()Andrei Vagin
WaitForHTTP tries GET requests on a port until the call succeeds or timeout. But we want to be sure that one of our attempts will not stuck for the whole timeout. All timeouts are increased to 30 seconds, because test cases with smaller timeouts fail sometimes even for the native container runtime (runc). PiperOrigin-RevId: 247888467 Change-Id: I03cfd3275286bc686a78fd26da43231d20667851
2019-05-03Fix runsc restore to be compatible with docker start --checkpoint ...Andrei Vagin
Change-Id: I02b30de13f1393df66edf8829fedbf32405d18f8 PiperOrigin-RevId: 246621192
2019-05-03Increase timeout to wait for port to become availableFabricio Voznika
TestHttpd fails sporadically waiting for the port on slow machines. PiperOrigin-RevId: 246525277 Change-Id: Ie0ea71e3c4664d24f580eabd8f7461e47079f734
2019-04-29Change copyright notice to "The gVisor Authors"Michael Pratt
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
2019-04-26Make raw sockets a toggleable feature disabled by default.Kevin Krakauer
PiperOrigin-RevId: 245511019 Change-Id: Ia9562a301b46458988a6a1f0bbd5f07cbfcb0615
2019-01-31Remove license commentsMichael Pratt
Nothing reads them and they can simply get stale. Generated with: $ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD PiperOrigin-RevId: 231818945 Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
2019-01-16Prevent internal tmpfs mount to override files in /tmpFabricio Voznika
Runsc wants to mount /tmp using internal tmpfs implementation for performance. However, it risks hiding files that may exist under /tmp in case it's present in the container. Now, it only mounts over /tmp iff: - /tmp was not explicitly asked to be mounted - /tmp is empty If any of this is not true, then /tmp maps to the container's image /tmp. Note: checkpoint doesn't have sentry FS mounted to check if /tmp is empty. It simply looks for explicit mounts right now. PiperOrigin-RevId: 229607856 Change-Id: I10b6dae7ac157ef578efc4dfceb089f3b94cde06
2018-10-23Track paths and provide a rename hook.Adin Scannell
This change also adds extensive testing to the p9 package via mocks. The sanity checks and type checks are moved from the gofer into the core package, where they can be more easily validated. PiperOrigin-RevId: 218296768 Change-Id: I4fc3c326e7bf1e0e140a454cbacbcc6fd617ab55
2018-10-19Use correct company name in copyright headerIan Gudger
PiperOrigin-RevId: 217951017 Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
2018-10-17runsc: Support job control signals for the root container.Nicolas Lacasse
Now containers run with "docker run -it" support control characters like ^C and ^Z. This required refactoring our signal handling a bit. Signals delivered to the "runsc boot" process are turned into loader.Signal calls with the appropriate delivery mode. Previously they were always sent directly to PID 1. PiperOrigin-RevId: 217566770 Change-Id: I5b7220d9a0f2b591a56335479454a200c6de8732
2018-10-17Bump Pause/Resume integration test timeout in attempt to deflake Kokoro.Nicolas Lacasse
This is one of the many tests that fails periodically, making Kokoro unstable. PiperOrigin-RevId: 217528257 Change-Id: I2508ecf4d74d71b91feff1183544d61d7bd16995
2018-10-11Sandbox cgroup testsFabricio Voznika
Verify that cgroup is being properly set. PiperOrigin-RevId: 216736137 Change-Id: I0e27fd604eca67e7dd2e3548dc372ca9cc416309
2018-10-10Add sandbox to cgroupFabricio Voznika
Sandbox creation uses the limits and reservations configured in the OCI spec and set cgroup options accordinly. Then it puts both the sandbox and gofer processes inside the cgroup. It also allows the cgroup to be pre-configured by the caller. If the cgroup already exists, sandbox and gofer processes will join the cgroup but it will not modify the cgroup with spec limits. PiperOrigin-RevId: 216538209 Change-Id: If2c65ffedf55820baab743a0edcfb091b89c1019
2018-10-08Job control signals must be sent to all processes in the FG process group.Nicolas Lacasse
We were previously only sending to the originator of the process group. Integration test was changed to test this behavior. It fails without the corresponding code change. PiperOrigin-RevId: 216297263 Change-Id: I7e41cfd6bdd067f4b9dc215e28f555fb5088916f
2018-10-03Fix sandbox chrootFabricio Voznika
Sandbox was setting chroot, but was not chaging the working dir. Added test to ensure this doesn't happen in the future. PiperOrigin-RevId: 215676270 Change-Id: I14352d3de64a4dcb90e50948119dc8328c9c15e1
2018-10-02Fix compilation bug.Nicolas Lacasse
Docker.Run only returns a single argument. PiperOrigin-RevId: 215427309 Change-Id: I1eebbc628853ca57f79d25e18d4f04dfa5a2a003
2018-10-01runsc: Support job control signals in "exec -it".Nicolas Lacasse
Terminal support in runsc relies on host tty file descriptors that are imported into the sandbox. Application tty ioctls are sent directly to the host fd. However, those host tty ioctls are associated in the host kernel with a host process (in this case runsc), and the host kernel intercepts job control characters like ^C and send signals to the host process. Thus, typing ^C into a "runsc exec" shell will send a SIGINT to the runsc process. This change makes "runsc exec" handle all signals, and forward them into the sandbox via the "ContainerSignal" urpc method. Since the "runsc exec" is associated with a particular container process in the sandbox, the signal must be associated with the same container process. One big difficulty is that the signal should not necessarily be sent to the sandbox process started by "exec", but instead must be sent to the foreground process group for the tty. For example, we may exec "bash", and from bash call "sleep 100". A ^C at this point should SIGINT sleep, not bash. To handle this, tty files inside the sandbox must keep track of their foreground process group, which is set/get via ioctls. When an incoming ContainerSignal urpc comes in, we look up the foreground process group via the tty file. Unfortunately, this means we have to expose and cache the tty file in the Loader. Note that "runsc exec" now handles signals properly, but "runs run" does not. That will come in a later CL, as this one is complex enough already. Example: root@:/usr/local/apache2# sleep 100 ^C root@:/usr/local/apache2# sleep 100 ^Z [1]+ Stopped sleep 100 root@:/usr/local/apache2# fg sleep 100 ^C root@:/usr/local/apache2# PiperOrigin-RevId: 215334554 Change-Id: I53cdce39653027908510a5ba8d08c49f9cf24f39
2018-09-28Made a few changes to make testutil.Docker easier to useFabricio Voznika
PiperOrigin-RevId: 215023376 Change-Id: I139569bd15c013e5dd0f60d0c98a64eaa0ba9e8e
2018-09-05Use container's capabilities in execFabricio Voznika
When no capabilities are specified in exec, use the container's capabilities to match runc's behavior. PiperOrigin-RevId: 211735186 Change-Id: Icd372ed64410c81144eae94f432dffc9fe3a86ce
2018-08-09Fix runsc integration_test when using --network=hostFabricio Voznika
inethost doesn't support netlink and 'ifconfig' call to retrieve IP address fails. Look up IP address in /etc/hosts instead. PiperOrigin-RevId: 208135641 Change-Id: I3c2ce15db6fc7c3306a45e4bfb9cc5d4423ffad3
2018-08-08Resend packets back to netstack if destined to itselfFabricio Voznika
Add option to redirect packet back to netstack if it's destined to itself. This fixes the problem where connecting to the local NIC address would not work, e.g.: echo bar | nc -l -p 8080 & echo foo | nc 192.168.0.2 8080 PiperOrigin-RevId: 207995083 Change-Id: I17adc2a04df48bfea711011a5df206326a1fb8ef
2018-08-07Fix build break in testFabricio Voznika
integration_test runs manually and breakage wasn't detected. Added test to kokoro to ensure breakages are detected in the future. PiperOrigin-RevId: 207772835 Change-Id: Iada81b579b558477d4db3516b38366ef6a2e933d
2018-07-11Created runsc and docker integration tests.Justine Olshan
Moved some of the docker image functions to testutil.go. Test runsc commands create, start, stop, pause, and resume. PiperOrigin-RevId: 204138452 Change-Id: Id00bc58d2ad230db5e9e905eed942187e68e7c7b
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