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path: root/runsc/container/container_test.go
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2020-11-05Re-add start/stop container testsFabricio Voznika
Due to a type doDestroyNotStartedTest was being tested 2x instead of doDestroyStartingTest. PiperOrigin-RevId: 340969797
2020-11-05Fix failure setting OOM score adjustmentFabricio Voznika
When OOM score adjustment needs to be set, all the containers need to be loaded to find all containers that belong to the sandbox. However, each load signals the container to ensure it is still alive. OOM score adjustment is set during creation and deletion of every container, generating a flood of signals to all containers. The fix removes the signal check when it's not needed. There is also a race fetching OOM score adjustment value from the parent when the sandbox exits at the same time (the time it took to signal containers above made this window quite large). The fix is to store the original value in the sandbox state file and use it when the value needs to be restored. Also add more logging and made the existing ones more consistent to help with debugging. PiperOrigin-RevId: 340940799
2020-10-19Fixes to cgroupsFabricio Voznika
There were a few problems with cgroups: - cleanup loop what breaking too early - parse of /proc/[pid]/cgroups was skipping "name=systemd" because "name=" was not being removed from name. - When no limits are specified, fillFromAncestor was not being called, causing a failure to set cpuset.mems Updates #4536 PiperOrigin-RevId: 337947356
2020-10-05Enable more VFS2 testsFabricio Voznika
Updates #1487 PiperOrigin-RevId: 335516732
2020-09-25fix TestUserLog for multi-archHoward Zhang
based on arch, apply different syscall number for sched_rr_get_interval Signed-off-by: Howard Zhang <howard.zhang@arm.com>
2020-09-17Add VFS2 overlay support in runscFabricio Voznika
All tests under runsc are passing with overlay enabled. Updates #1487, #1199 PiperOrigin-RevId: 332181267
2020-09-16Refactor removed default test dimensionFabricio Voznika
ptrace was always selected as a dimension before, but not anymore. Some tests were specifying "overlay" expecting that to be in addition to the default. PiperOrigin-RevId: 332004111
2020-09-08Honor readonly flag for root mountFabricio Voznika
Updates #1487 PiperOrigin-RevId: 330580699
2020-08-19Move boot.Config to its own packageFabricio Voznika
Updates #3494 PiperOrigin-RevId: 327548511
2020-07-27Clean-up bazel wrapper.Adin Scannell
The bazel server was being started as the wrong user, leading to issues where the container would suddenly exit during a build. We can also simplify the waiting logic by starting the container in two separate steps: those that must complete first, then the asynchronous bit. PiperOrigin-RevId: 323391161
2020-06-08Combine executable lookup codeFabricio Voznika
Run vs. exec, VFS1 vs. VFS2 were executable lookup were slightly different from each other. Combine them all into the same logic. PiperOrigin-RevId: 315426443
2020-06-01More runsc changes for VFS2Fabricio Voznika
- Add /tmp handling - Apply mount options - Enable more container_test tests - Forward signals to child process when test respaws process to run as root inside namespace. Updates #1487 PiperOrigin-RevId: 314263281
2020-05-28Automated rollback of changelist 309082540Fabricio Voznika
PiperOrigin-RevId: 313636920
2020-05-18Improve unsupported syscall messageFabricio Voznika
PiperOrigin-RevId: 312104899
2020-05-13Enable overlayfs_stale_read by default for runsc.Jamie Liu
Linux 4.18 and later make reads and writes coherent between pre-copy-up and post-copy-up FDs representing the same file on an overlay filesystem. However, memory mappings remain incoherent: - Documentation/filesystems/overlayfs.rst, "Non-standard behavior": "If a file residing on a lower layer is opened for read-only and then memory mapped with MAP_SHARED, then subsequent changes to the file are not reflected in the memory mapping." - fs/overlay/file.c:ovl_mmap() passes through to the underlying FD without any management of coherence in the overlay. - Experimentally on Linux 5.2: ``` $ cat mmap_cat_page.c #include <err.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <sys/mman.h> #include <unistd.h> int main(int argc, char **argv) { if (argc < 2) { errx(1, "syntax: %s [FILE]", argv[0]); } const int fd = open(argv[1], O_RDONLY); if (fd < 0) { err(1, "open(%s)", argv[1]); } const size_t page_size = sysconf(_SC_PAGE_SIZE); void* page = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); if (page == MAP_FAILED) { err(1, "mmap"); } for (;;) { write(1, page, strnlen(page, page_size)); if (getc(stdin) == EOF) { break; } } return 0; } $ gcc -O2 -o mmap_cat_page mmap_cat_page.c $ mkdir lowerdir upperdir workdir overlaydir $ echo old > lowerdir/file $ sudo mount -t overlay -o "lowerdir=lowerdir,upperdir=upperdir,workdir=workdir" none overlaydir $ ./mmap_cat_page overlaydir/file old ^Z [1]+ Stopped ./mmap_cat_page overlaydir/file $ echo new > overlaydir/file $ cat overlaydir/file new $ fg ./mmap_cat_page overlaydir/file old ``` Therefore, while the VFS1 gofer client's behavior of reopening read FDs is only necessary pre-4.18, replacing existing memory mappings (in both sentry and application address spaces) with mappings of the new FD is required regardless of kernel version, and this latter behavior is common to both VFS1 and VFS2. Re-document accordingly, and change the runsc flag to enabled by default. New test: - Before this CL: https://source.cloud.google.com/results/invocations/5b222d2c-e918-4bae-afc4-407f5bac509b - After this CL: https://source.cloud.google.com/results/invocations/f28c747e-d89c-4d8c-a461-602b33e71aab PiperOrigin-RevId: 311361267
2020-05-04Enable TestRunNonRoot on VFS2Fabricio Voznika
Also added back the default test dimension back which was dropped in a previous refactor. PiperOrigin-RevId: 309797327
2020-05-04Add TTY support on VFS2 to runscFabricio Voznika
Updates #1623, #1487 PiperOrigin-RevId: 309777922
2020-04-29Merge pull request #2487 from moricho:fix/bindmountgVisor bot
PiperOrigin-RevId: 309082540
2020-04-26refactor and add test for bindmountmoricho
Signed-off-by: moricho <ikeda.morito@gmail.com>
2020-04-25Add container tests passing with VFS2Zach Koopmans
Several tests are passing after getting TestAppExitStatus (run /bin/true) changes. Make versions that run via VFS2 so that we know what is and isn't working. In addition, fix bug in VFSFile ReadFull. For the TestExePath test in container_test.go, the case "unmasked" will return 0 bytes read with no EOF err, causing the ReadFull call to spin. PiperOrigin-RevId: 308428126
2020-04-23Simplify Docker test infrastructure.Adin Scannell
This change adds a layer of abstraction around the internal Docker APIs, and eliminates all direct dependencies on Dockerfiles in the infrastructure. A subsequent change will automated the generation of local images (with efficient caching). Note that this change drops the use of bazel container rules, as that experiment does not seem to be viable. PiperOrigin-RevId: 308095430
2020-04-17Add test name to boot and gofer log filesFabricio Voznika
This is to make easier to find corresponding logs in case test fails. PiperOrigin-RevId: 307104283
2020-04-17Get /bin/true to run on VFS2Zach Koopmans
Included: - loader_test.go RunTest and TestStartSignal VFS2 - container_test.go TestAppExitStatus on VFS2 - experimental flag added to runsc to turn on VFS2 Note: shared mounts are not yet supported. PiperOrigin-RevId: 307070753
2020-03-12Kill sandbox process when parent process terminatesFabricio Voznika
When the sandbox runs in attached more, e.g. runsc do, runsc run, the sandbox lifetime is controlled by the parent process. This wasn't working in all cases because PR_GET_PDEATHSIG doesn't propagate through execve when the process changes uid/gid. So it was getting dropped when the sandbox execve's to change to user nobody. PiperOrigin-RevId: 300601247
2020-03-05tests: Don't print log messages on stdoutAndrei Vagin
A parser of test results doesn't expect to see any extra messages. PiperOrigin-RevId: 299174138
2020-02-25Add log during process wait in testsFabricio Voznika
TestMultiContainerKillAll timed out under --race. Without logging, we cannot tell if the process list is still increasing, but slowly, or is stuck. PiperOrigin-RevId: 297158834
2020-02-06Fix TestPauseResume in container test failed with connection refused.Ting-Yu Wang
Sometimes we get this error under TSAN: """ error getting process data from container: connecting to control server at PID XXXX: connection refused """ The theory is that the top "sleep 20" was too short for TSAN, and the container already exited, so we get connected refused. This commit changes the test to let container signaling it's running by touching a file repeatedly forever during the test. PiperOrigin-RevId: 293710957
2020-01-09New sync package.Ian Gudger
* Rename syncutil to sync. * Add aliases to sync types. * Replace existing usage of standard library sync package. This will make it easier to swap out synchronization primitives. For example, this will allow us to use primitives from github.com/sasha-s/go-deadlock to check for lock ordering violations. Updates #1472 PiperOrigin-RevId: 289033387
2019-12-18Increase waitForProcessList timeoutFabricio Voznika
It can take more than 10 seconds when running under --race. PiperOrigin-RevId: 286296060
2019-12-11runsc/debug: add an option to list all processesAndrei Vagin
runsc debug --ps list all processes with all threads. This option is added to the debug command but not to the ps command, because it is going to be used for debug purposes and we want to add any useful information without thinking about backward compatibility. This will help to investigate syzkaller issues. PiperOrigin-RevId: 285013668
2019-12-06Implement TTY field in control.Processes().Nicolas Lacasse
Threadgroups already know their TTY (if they have one), which now contains the TTY Index, and is returned in the Processes() call. PiperOrigin-RevId: 284263850
2019-10-24Fix early deletion of rootDirFabricio Voznika
container.startContainers() cannot be called twice in a test (e.g. TestMultiContainerLoadSandbox) because the cleanup function deletes the rootDir, together with information from all other containers that may exist. PiperOrigin-RevId: 276591806
2019-10-16Fix problem with open FD when copy up is triggered in overlayfsFabricio Voznika
Linux kernel before 4.19 doesn't implement a feature that updates open FD after a file is open for write (and is copied to the upper layer). Already open FD will continue to read the old file content until they are reopened. This is especially problematic for gVisor because it caches open files. Flag was added to force readonly files to be reopenned when the same file is open for write. This is only needed if using kernels prior to 4.19. Closes #1006 It's difficult to really test this because we never run on tests on older kernels. I'm adding a test in GKE which uses kernels with the overlayfs problem for 1.14 and lower. PiperOrigin-RevId: 275115289
2019-10-01Prevent CAP_NET_RAW from appearing in execFabricio Voznika
'docker exec' was getting CAP_NET_RAW even when --net-raw=false because it was not filtered out from when copying container's capabilities. PiperOrigin-RevId: 272260451
2019-09-03Impose order on test scripts.Adin Scannell
The simple test script has gotten out of control. Shard this script into different pieces and attempt to impose order on overall test structure. This change helps lay some of the foundations for future improvements. * The runsc/test directories are moved into just test/. * The runsc/test/testutil package is split into logical pieces. * The scripts/ directory contains new top-level targets. * Each test is now responsible for building targets it requires. * The install functionality is moved into `runsc` itself for simplicity. * The existing kokoro run_tests.sh file now just calls all (can be split). After this change is merged, I will create multiple distinct workflows for Kokoro, one for each of the scripts currently targeted by `run_tests.sh` today, which should dramatically reduce the time-to-run for the Kokoro tests, and provides a better foundation for further improvements to the infrastructure. PiperOrigin-RevId: 267081397
2019-08-27Mount volumes as super userFabricio Voznika
This used to be the case, but regressed after a recent change. Also made a few fixes around it and clean up the code a bit. Closes #720 PiperOrigin-RevId: 265717496
2019-08-02Stops container if gofer is killedFabricio Voznika
Each gofer now has a goroutine that polls on the FDs used to communicate with the sandbox. The respective gofer is destroyed if any of the FDs is closed. Closes #601 PiperOrigin-RevId: 261383725
2019-07-24Use different pidns among different containerschris.zn
The different containers in a sandbox used only one pid namespace before. This results in that a container can see the processes in another container in the same sandbox. This patch use different pid namespace for different containers. Signed-off-by: chris.zn <chris.zn@antfin.com>
2019-07-08Don't try to execute a file that is not regular.Nicolas Lacasse
PiperOrigin-RevId: 257037608
2019-07-03Avoid importing platforms from many source filesAndrei Vagin
PiperOrigin-RevId: 256494243
2019-06-27Fix various spelling issues in the documentationMichael Pratt
Addresses obvious typos, in the documentation only. COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/443 from Pixep:fix/documentation-spelling 4d0688164eafaf0b3010e5f4824b35d1e7176d65 PiperOrigin-RevId: 255477779
2019-06-18Kill sandbox process when 'runsc do' exitsFabricio Voznika
PiperOrigin-RevId: 253882115
2019-06-18Add Container/Sandbox args struct for creationFabricio Voznika
There were 3 string arguments that could be easily misplaced and it makes it easier to add new arguments, especially for Container that has dozens of callers. PiperOrigin-RevId: 253872074
2019-06-13Update canonical repository.Adin Scannell
This can be merged after: https://github.com/google/gvisor-website/pull/77 or https://github.com/google/gvisor-website/pull/78 PiperOrigin-RevId: 253132620
2019-06-12Allow 'runsc do' to run without rootFabricio Voznika
'--rootless' flag lets a non-root user execute 'runsc do'. The drawback is that the sandbox and gofer processes will run as root inside a user namespace that is mapped to the caller's user, intead of nobody. And network is defaulted to '--network=host' inside the root network namespace. On the bright side, it's very convenient for testing: runsc --rootless do ls runsc --rootless do curl www.google.com PiperOrigin-RevId: 252840970
2019-06-03Remove 'clearStatus' option from container.Wait*PID()Fabricio Voznika
clearStatus was added to allow detached execution to wait on the exec'd process and retrieve its exit status. However, it's not currently used. Both docker and gvisor-containerd-shim wait on the "shim" process and retrieve the exit status from there. We could change gvisor-containerd-shim to use waits, but it will end up also consuming a process for the wait, which is similar to having the shim process. Closes #234 PiperOrigin-RevId: 251349490
2019-05-03Fix runsc restore to be compatible with docker start --checkpoint ...Andrei Vagin
Change-Id: I02b30de13f1393df66edf8829fedbf32405d18f8 PiperOrigin-RevId: 246621192
2019-05-02runsc: move test_app in a separate directoryAndrei Vagin
Opensource tools (e. g. https://github.com/fatih/vim-go) can't hanlde more than one golang package in one directory. PiperOrigin-RevId: 246435962 Change-Id: I67487915e3838762424b2d168efc54ae34fb801f
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
2019-04-29Allow and document bug ids in gVisor codebase.Nicolas Lacasse
PiperOrigin-RevId: 245818639 Change-Id: I03703ef0fb9b6675955637b9fe2776204c545789
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