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2018-06-22Modified Checkpoint/Restore flags to improve compatibility with Docker.Brielle Broder
Added a number of unimplemented flags required for using runsc's Checkpoint and Restore with Docker. Modified the "image-path" flag to require a directory instead of a file. PiperOrigin-RevId: 201697486 Change-Id: I55883df2f1bbc3ec3c395e0ca160ce189e5e7eba
2018-06-21netstack: tcp socket connected state S/R support.Zhaozhong Ni
PiperOrigin-RevId: 201596247 Change-Id: Id22f47b2cdcbe14aa0d930f7807ba75f91a56724
2018-06-21Drop return from SendExternalSignalMichael Pratt
SendExternalSignal is no longer called before CreateProcess, so it can enforce this simplified precondition. StartForwarding, and after Kernel.Start. PiperOrigin-RevId: 201591170 Change-Id: Ib7022ef7895612d7d82a00942ab59fa433c4d6e9
2018-06-21Forward SIGUSR2 to the sandbox tooFabricio Voznika
SIGUSR2 was being masked out to be used as a way to dump sentry stacks. This could cause compatibility problems in cases anyone uses SIGUSR2 to communicate with the container init process. PiperOrigin-RevId: 201575374 Change-Id: I312246e828f38ad059139bb45b8addc2ed055d74
2018-06-21Implement ioctl(FIOASYNC)Ian Gudger
FIOASYNC and friends are used to send signals when a file is ready for IO. This may or may not be needed by Nginx. While Nginx does use it, it is unclear if the code that uses it has any effect. PiperOrigin-RevId: 201550828 Change-Id: I7ba05a7db4eb2dfffde11e9bd9a35b65b98d7f50
2018-06-21Added functionality to create a RestoreEnvironment.Justine Olshan
Before a container can be restored, the mounts must be configured. The root and submounts and their key information is compiled into a RestoreEnvironment. Future code will be added to set this created environment before restoring a container. Tests to ensure the correct environment were added. PiperOrigin-RevId: 201544637 Change-Id: Ia894a8b0f80f31104d1c732e113b1d65a4697087
2018-06-21Restore implementation added to runsc.Brielle Broder
Restore creates a new container and uses the given image-path to load a saved image of a previous container. Restore command is plumbed through container and sandbox. This command does not work yet - more to come. PiperOrigin-RevId: 201541229 Change-Id: I864a14c799ce3717d99bcdaaebc764281863d06f
2018-06-21runsc: Default umask should be 0.Nicolas Lacasse
PiperOrigin-RevId: 201539050 Change-Id: I36cbf270fa5ad25de507ecb919e4005eda6aa16d
2018-06-21Fix typo in runsc gofer flag descriptionIan Gudger
PiperOrigin-RevId: 201529295 Change-Id: I55eb516ec6d14fbcd48593a3d61f724adc253a23
2018-06-20Reduce test sleep timeFabricio Voznika
PiperOrigin-RevId: 201428433 Change-Id: I72de1e46788ec84f61513416bb690956e515907e
2018-06-20Include image test as part of kokoro testsFabricio Voznika
PiperOrigin-RevId: 201427731 Change-Id: I5cbee383ec51c02b7892ec7812cbbdc426be8991
2018-06-20Add end-to-end image testsFabricio Voznika
PiperOrigin-RevId: 201418619 Change-Id: I7961b027394d98422642f829bc54745838c138bd
2018-06-20Add 'runsc debug' commandFabricio Voznika
It prints sandbox stacks to the log to help debug stuckness. I expect that many more options will be added in the future. PiperOrigin-RevId: 201405931 Change-Id: I87e560800cd5a5a7b210dc25a5661363c8c3a16e
2018-06-20Kokoro: Change name of uploaded log files.Nicolas Lacasse
PiperOrigin-RevId: 201404066 Change-Id: I8a0f2405d0192d412386592c1872a67582921b12
2018-06-20Remove some defers in hot paths in the filesystem code.Nicolas Lacasse
PiperOrigin-RevId: 201401727 Change-Id: Ia5589882ba58a00efb522ab372e206b7e8e62aee
2018-06-20Add tool to configure runtime settings in dockerFabricio Voznika
This will be used with the upcoming e2e image tests. PiperOrigin-RevId: 201400832 Change-Id: I49509314e16ea54655ea8060dbf511a04a7a8f79
2018-06-20sentry: pending signals S/R optimization.Zhaozhong Ni
Almost all of the hundreds of pending signal queues are empty upon save. PiperOrigin-RevId: 201380318 Change-Id: I40747072435299de681d646e0862efac0637e172
2018-06-19runsc: Enable container creation within existing sandboxes.Kevin Krakauer
Containers are created as processes in the sandbox. Of the many things that don't work yet, the biggest issue is that the fsgofer is launched with its root as the sandbox's root directory. Thus, when a container is started and wants to read anything (including the init binary of the container), the gofer tries to serve from sandbox's root (which basically just has pause), not the container's. PiperOrigin-RevId: 201294560 Change-Id: I6423aa8830538959c56ae908ce067e4199d627b1
2018-06-19Epsocket has incorrect recv(2) behavior after SHUT_RD.Brian Geffon
After shutdown(SHUT_RD) calls to recv /w MSG_DONTWAIT or with O_NONBLOCK should result in a EAGAIN and not 0. Blocking sockets should return 0 as they would have otherwise blocked indefinitely. PiperOrigin-RevId: 201271123 Change-Id: If589b69c17fa5b9ff05bcf9e44024da9588c8876
2018-06-19runsc: Whitelist lstat, as it is now used in specutils.Kevin Krakauer
When running multi-container, child containers are added after the filters have been installed. Thus, lstat must be in the set of allowed syscalls. PiperOrigin-RevId: 201269550 Change-Id: I03f2e6675a53d462ed12a0f651c10049b76d4c52
2018-06-19state: pretty-print primitive type arrays.Zhaozhong Ni
PiperOrigin-RevId: 201269072 Change-Id: Ia542c5a42b5b5d21c1104a003ddff5279644d309
2018-06-19runsc: Fix flakey container_test.Kevin Krakauer
Verified that this is no longer flakey over 10K repetitions. PiperOrigin-RevId: 201267499 Change-Id: I793c916fe725412aec25953f764cb4f52c9fbed3
2018-06-19Make KVM more scalable by removing CPU cap.Adin Scannell
Instead, CPUs will be created dynamically. We also allow a relatively efficient mechanism for stealing and notifying when a vCPU becomes available via unlock. Since the number of vCPUs is no longer fixed at machine creation time, we make the dirtySet packing more efficient. This has the pleasant side effect of cutting out the unsafe address space code. PiperOrigin-RevId: 201266691 Change-Id: I275c73525a4f38e3714b9ac0fd88731c26adfe66
2018-06-19sentry: futex S/R optimization.Zhaozhong Ni
No need to save thousands of zerovalue buckets. PiperOrigin-RevId: 201258598 Change-Id: I5d3ea7b6a5345117ab4f610332d5288ca550be33
2018-06-19Added a resume command to unpause a paused container.Justine Olshan
Resume checks the status of the container and unpauses the kernel if its status is paused. Otherwise nothing happens. Tests were added to ensure that the process is in the correct state after various commands. PiperOrigin-RevId: 201251234 Change-Id: Ifd11b336c33b654fea6238738f864fcf2bf81e19
2018-06-19Rpcinet is racy around shutdown flags.Brian Geffon
Correct a data race in rpcinet where a shutdown and recvmsg can race around shutown flags. PiperOrigin-RevId: 201238366 Change-Id: I5eb06df4a2b4eba331eeb5de19076213081d581f
2018-06-19Add a new cache policy FSCACHE_WRITETHROUGH.Nicolas Lacasse
The new policy is identical to FSCACHE (which caches everything in memory), but it also flushes writes to the backing fs agent immediately. All gofer cache policy decisions have been moved into the cachePolicy type. Previously they were sprinkled around the codebase. There are many different things that we cache (page cache, negative dirents, dirent LRU, unstable attrs, readdir results....), and I don't think we should have individual flags to control each of these. Instead, we should have a few high-level cache policies that are consistent and useful to users. This refactoring makes it easy to add more such policies. PiperOrigin-RevId: 201206937 Change-Id: I6e225c382b2e5e1b0ad4ccf8ca229873f4cd389d
2018-06-19state: include I/O and protobuf time in kernel S/R timing stats.Zhaozhong Ni
PiperOrigin-RevId: 201205733 Change-Id: I300307b0668989ba7776ab9e3faee71efdd33f46
2018-06-19Rpcinet needs to track shutdown state for blocking sockets.Brian Geffon
Because rpcinet will emulate a blocking socket backed by an rpc based non-blocking socket. In the event of a shutdown(SHUT_RD) followed by a read a non-blocking socket is allowed to return an EWOULDBLOCK however since a blocking socket knows it cannot receive anymore data it would block indefinitely and in this situation linux returns 0. We have to track this on the rpcinet sentry side so we can emulate that behavior because the remote side has no way to know if the socket is actually blocking within the sentry. PiperOrigin-RevId: 201201618 Change-Id: I4ac3a7b74b5dae471ab97c2e7d33b83f425aedac
2018-06-18Modified boot.go to allow for restores.Justine Olshan
A file descriptor was added as a flag to boot so a state file can restore a container that was checkpointed. PiperOrigin-RevId: 201068699 Change-Id: I18e96069488ffa3add468861397f3877725544aa
2018-06-18Add pointer to dated builds in READMEFabricio Voznika
PiperOrigin-RevId: 201068427 Change-Id: If03c8c22907e6ef623f39c8ae5316fdd76cf80cb
2018-06-18runsc: support symlink to the exec path.Lantao Liu
PiperOrigin-RevId: 201049912 Change-Id: Idd937492217a4c2ca3d59c602e41576a3b203dd9
2018-06-18runsc: support "rw" mount option.Lantao Liu
PiperOrigin-RevId: 201018483 Change-Id: I52fe3d01c83c8a2f0e9275d9d88c37e46fa224a2
2018-06-18Automated rollback of changelist 200770591Fabricio Voznika
PiperOrigin-RevId: 201012131 Change-Id: I5cd69e795555129319eb41135ecf26db9a0b1fcb
2018-06-17Add rpcinet support for control messages.Brian Geffon
Add support for control messages, but at this time the only control message that the sentry will support here is SO_TIMESTAMP. PiperOrigin-RevId: 200922230 Change-Id: I63a852d9305255625d9df1d989bd46a66e93c446
2018-06-15Added code for a pause command for a container process.Justine Olshan
Like runc, the pause command will pause the processes of the given container. It will set that container's status to "paused." A resume command will be be added to unpause and continue running the process. PiperOrigin-RevId: 200789624 Change-Id: I72a5d7813d90ecfc4d01cc252d6018855016b1ea
2018-06-15Replace crypto/rand with internal rand packageMichael Pratt
PiperOrigin-RevId: 200784607 Change-Id: I39aa6ee632936dcbb00fc298adccffa606e9f4c0
2018-06-15runsc: Make gofer logs show up in test output.Kevin Krakauer
PiperOrigin-RevId: 200770591 Change-Id: Ifc096d88615b63135210d93c2b4cee2eaecf1eee
2018-06-15runsc: support /dev bind mount which does not conflict with default /dev mount.Lantao Liu
PiperOrigin-RevId: 200768923 Change-Id: I4b8da10bcac296e8171fe6754abec5aabfec5e65
2018-06-15sentry: do not start delivering external signal immediately.Zhaozhong Ni
PiperOrigin-RevId: 200765756 Change-Id: Ie4266f32e4e977df3925eb29f3fbb756e0337606
2018-06-15FIFOs should support O_TRUNC as a no-op.Brian Geffon
PiperOrigin-RevId: 200759323 Change-Id: I683b2edcc2188304c4ca563e46af457e23625905
2018-06-15runsc/cmd: fix kill signal parsingDmitry Vyukov
Signal is arg 1, not 2. Killing with SIGABRT is useful to get Go traces. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Change-Id: I0b78e34a9de3fb3385108e26fdb4ff6e9347aeff PiperOrigin-RevId: 200742743
2018-06-15Use notify explicitly on unlock path.Adin Scannell
There are circumstances under which the redpill call will not generate the appropriate action and notification. Replace this call with an explicit notification, which is guaranteed to transition as well as perform the futex wake. PiperOrigin-RevId: 200726934 Change-Id: Ie19e008a6007692dd7335a31a8b59f0af6e54aaa
2018-06-15Set kernel.applicationCores to the number of processor on the hostFabricio Voznika
The right number to use is the number of processors assigned to the cgroup. But until we make the sandbox join the respective cgroup, just use the number of processors on the host. Closes #65, closes #66 PiperOrigin-RevId: 200725483 Change-Id: I34a566b1a872e26c66f56fa6e3100f42aaf802b1
2018-06-15Implement /proc/thread-selfFabricio Voznika
Closes #68 PiperOrigin-RevId: 200725401 Change-Id: I4827009b8aee89d22887c3af67291ccf7058d420
2018-06-15Update contributing guidelines with an example.Adin Scannell
Fixes #69 PiperOrigin-RevId: 200683809 Change-Id: I1312ebb3775d5f9088e9108359c19e2dedbb7b70
2018-06-14Fix typo.Brielle Broder
PiperOrigin-RevId: 200631795 Change-Id: I297fe3e30fb06b04fccd8358c933e45019dcc1fa
2018-06-14Ignore expiration count in kernelCPUClockListener.Notify.Jamie Liu
PiperOrigin-RevId: 200590832 Change-Id: I35b817ecccc9414a742dee4815dfc67d0c7d0496
2018-06-14Add nanosleep filter for Go 1.11 supportMichael Pratt
golang.org/cl/108538 replaces pselect6 with nanosleep in runtime.usleep. Update the filters accordingly. PiperOrigin-RevId: 200574612 Change-Id: Ifb2296fcb3781518fc047aabbbffedb9ae488cd7
2018-06-13Fix reference leak in VDSO validationIan Gudger
PiperOrigin-RevId: 200496070 Change-Id: I33adb717c44e5b4bcadece882be3ab1ee3920556
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