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2018-09-21Run gofmt -s on everythingIan Gudger
PiperOrigin-RevId: 214040901 Change-Id: I74d79497a053da3624921ad2b7c5193ca4a87942
2018-09-18Handle children processes better in testsFabricio Voznika
Reap children more systematically in container tests. Previously, container_test was taking ~5 mins to run because constainer.Destroy() would timeout waiting for the sandbox process to exit. Now the test running in less than a minute. Also made the contract around Container and Sandbox destroy clearer. PiperOrigin-RevId: 213527471 Change-Id: Icca84ee1212bbdcb62bdfc9cc7b71b12c6d1688d
2018-09-07Remove '--file-access=direct' optionFabricio Voznika
It was used before gofer was implemented and it's not supported anymore. BREAKING CHANGE: proxy-shared and proxy-exclusive options are now: shared and exclusive. PiperOrigin-RevId: 212017643 Change-Id: If029d4073fe60583e5ca25f98abb2953de0d78fd
2018-09-07runsc: Run sandbox process inside minimal chroot.Nicolas Lacasse
We construct a dir with the executable bind-mounted at /exe, and proc mounted at /proc. Runsc now executes the sandbox process inside this chroot, thus limiting access to the host filesystem. The mounts and chroot dir are removed when the sandbox is destroyed. Because this requires bind-mounts, we can only do the chroot if we have CAP_SYS_ADMIN. PiperOrigin-RevId: 211994001 Change-Id: Ia71c515e26085e0b69b833e71691830148bc70d1
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
2018-09-04runsc: Run sandbox as user nobody.Nicolas Lacasse
When starting a sandbox without direct file or network access, we create an empty user namespace and run the sandbox in there. However, the root user in that namespace is still mapped to the root user in the parent namespace. This CL maps the "nobody" user from the parent namespace into the child namespace, and runs the sandbox process as user "nobody" inside the new namespace. PiperOrigin-RevId: 211572223 Change-Id: I1b1f9b1a86c0b4e7e5ca7bc93be7d4887678bab6
2018-09-04runsc: Pass log and config files to sandbox process by FD.Nicolas Lacasse
This is a prereq for running the sandbox process as user "nobody", when it may not have permissions to open these files. Instead, we must open then before starting the sandbox process, and pass them by FD. The specutils.ReadSpecFromFile method was fixed to always seek to the beginning of the file before reading. This allows Files from the same FD to be read multiple times, as we do in the boot command when the apply-caps flag is set. Tested with --network=host. PiperOrigin-RevId: 211570647 Change-Id: I685be0a290aa7f70731ebdce82ebc0ebcc9d475c
2018-08-31Automated rollback of changelist 210995199Fabricio Voznika
PiperOrigin-RevId: 211116429 Change-Id: I446d149c822177dc9fc3c64ce5e455f7f029aa82
2018-08-31Fix RunAsRoot arguments forwardingFabricio Voznika
It was including the path to the executable twice in the arguments. PiperOrigin-RevId: 211098311 Change-Id: I5357c51c63f38dfab551b17bb0e04011a0575010
2018-08-30runsc: Pass log and config files to sandbox process by FD.Nicolas Lacasse
This is a prereq for running the sandbox process as user "nobody", when it may not have permissions to open these files. Instead, we must open then before starting the sandbox process, and pass them by FD. PiperOrigin-RevId: 210995199 Change-Id: I715875a9553290b4a49394a8fcd93be78b1933dd
2018-08-27Put fsgofer inside chrootFabricio Voznika
Now each container gets its own dedicated gofer that is chroot'd to the rootfs path. This is done to add an extra layer of security in case the gofer gets compromised. PiperOrigin-RevId: 210396476 Change-Id: Iba21360a59dfe90875d61000db103f8609157ca0
2018-08-20Standardize mounts in testsFabricio Voznika
Tests get a readonly rootfs mapped to / (which was the case before) and writable TEST_TMPDIR. This makes it easier to setup containers to write to files and to share state between test and containers. PiperOrigin-RevId: 209453224 Change-Id: I4d988e45dc0909a0450a3bb882fe280cf9c24334
2018-08-16Combine functions to search for file under one common functionFabricio Voznika
Bazel adds the build type in front of directories making it hard to refer to binaries in code. PiperOrigin-RevId: 209010854 Change-Id: I6c9da1ac3bbe79766868a3b14222dd42d03b4ec5
2018-08-14runsc: Change cache policy for root fs and volume mounts.Nicolas Lacasse
Previously, gofer filesystems were configured with the default "fscache" policy, which caches filesystem metadata and contents aggressively. While this setting is best for performance, it means that changes from inside the sandbox may not be immediately propagated outside the sandbox, and vice-versa. This CL changes volumes and the root fs configuration to use a new "remote-revalidate" cache policy which tries to retain as much caching as possible while still making fs changes visible across the sandbox boundary. This cache policy is enabled by default for the root filesystem. The default value for the "--file-access" flag is still "proxy", but the behavior is changed to use the new cache policy. A new value for the "--file-access" flag is added, called "proxy-exclusive", which turns on the previous aggressive caching behavior. As the name implies, this flag should be used when the sandbox has "exclusive" access to the filesystem. All volume mounts are configured to use the new cache policy, since it is safest and most likely to be correct. There is not currently a way to change this behavior, but it's possible to add such a mechanism in the future. The configurability is a smaller issue for volumes, since most of the expensive application fs operations (walking + stating files) will likely served by the root fs. PiperOrigin-RevId: 208735037 Change-Id: Ife048fab1948205f6665df8563434dbc6ca8cfc9
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
2018-08-02Isolate image pulling time from container startupFabricio Voznika
mysql image test is timing out sporadically and it's hard to tell where the slow down in coming from. PiperOrigin-RevId: 207147237 Change-Id: I05a4d2c116292695d63cf861f3b89cd1c54b6106
2018-07-25Replace sleeps with waits in tests - part IFabricio Voznika
PiperOrigin-RevId: 206084473 Change-Id: I44e1b64b9cdd2964357799dca27cc0cbc19ce07d
2018-07-23Add KVM and overlay dimensions to container_testFabricio Voznika
PiperOrigin-RevId: 205714667 Change-Id: I317a2ca98ac3bdad97c4790fcc61b004757d99ef
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
2018-06-25runsc: add a `multi-container` flag to enable multi-container support.Lantao Liu
PiperOrigin-RevId: 201995800 Change-Id: I770190d135e14ec7da4b3155009fe10121b2a502
2018-06-20Add end-to-end image testsFabricio Voznika
PiperOrigin-RevId: 201418619 Change-Id: I7961b027394d98422642f829bc54745838c138bd
2018-06-12Enable debug logging in testsFabricio Voznika
Unit tests call runsc directly now, so all command line arguments are valid. On the other hand, enabling debug in the test binary doesn't affect runsc. It needs to be set in the config. PiperOrigin-RevId: 200237706 Change-Id: I0b5922db17f887f58192dbc2f8dd2fd058b76ec7
2018-06-06runsc: Support abbreviated container IDs.Kevin Krakauer
Just a UI/usability addition. It's a lot easier to type "60" than "60185c721d7e10c00489f1fa210ee0d35c594873d6376b457fb1815e4fdbfc2c". PiperOrigin-RevId: 199547932 Change-Id: I19011b5061a88aba48a9ad7f8cf954a6782de854
2018-06-04Refactor container_test in preparation for sandbox_testFabricio Voznika
Common code to setup and run sandbox is moved to testutil. Also, don't link "boot" and "gofer" commands with test binary. Instead, use runsc binary from the build. This not only make the test setup simpler, but also resolves a dependency issue with sandbox_tests not depending on container package. PiperOrigin-RevId: 199164478 Change-Id: I27226286ca3f914d4d381358270dd7d70ee8372f
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