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2019-10-31Add systemd-cgroup flag option.Ian Lewis
Adds a systemd-cgroup flag option that prints an error letting the user know that systemd cgroups are not supported and points them to the relevant issue. Issue #193 PiperOrigin-RevId: 277837162
2019-10-31Add LICENSE and AUTHORS to the go branch.Adin Scannell
Also, construct the README directly so that edits can be made. PiperOrigin-RevId: 277782095
2019-10-31platform/kvm: calll sigtimedwait with zero timeoutAndrei Vagin
sigtimedwait is used to check pending signals and it should not block. PiperOrigin-RevId: 277777269
2019-10-31Fix overloaded use of $RUNTIME.Brad Burlage
Turns out we use $RUNTIME in scripts/common.sh to give a name to the runsc runtime used by the tests. PiperOrigin-RevId: 277764383
2019-10-31Merge pull request #1058 from cmingxu:mastergVisor bot
PiperOrigin-RevId: 277623766
2019-10-30Deep copy dispatcher views.Kevin Krakauer
When VectorisedViews were passed up the stack from packet_dispatchers, we were passing a sub-slice of the dispatcher's views fields. The dispatchers then immediately set those views to nil. This wasn't caught before because every implementer copied the data in these views before returning. PiperOrigin-RevId: 277615351
2019-10-30Add Kokoro config for new runtime testsBrad Burlage
PiperOrigin-RevId: 277607217
2019-10-30support using KVM_MEM_READONLY for arm64 regionslubinszARM
On Arm platform, "setMemoryRegion" has extra permission checks. In virt/kvm/arm/mmu.c: kvm_arch_prepare_memory_region() .... if (writable && !(vma->vm_flags & VM_WRITE)) { ret = -EPERM; break; } .... So, for Arm platform, the "flags" for kvm_memory_region is required. And on x86 platform, the "flags" can be always set as '0'. Signed-off-by: Bin Lu <bin.lu@arm.com> COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/810 from lubinszARM:pr_setregion 8c99b19cfb0c859c6630a1cfff951db65fcf87ac PiperOrigin-RevId: 277602603
2019-10-30Fix container lockingFabricio Voznika
Sandbox root dir was not being saved with the Container state, so it would point to the wrong directory location when attempting to lock the sandbox. This led to race conditions saving and loading container state. Fixing it, led to multiple deadlocks. I've moved the saving and locking logic to a separate struct and moved the lock file inside the RootDir (instead of container root dir), which allows the lock to be taken inside Destroy, and removes the need to lock the sandbox. PiperOrigin-RevId: 277599612
2019-10-30Store endpoints inside multiPortEndpoint in a sorted orderAndrei Vagin
It is required to guarantee the same order of endpoints after save/restore. PiperOrigin-RevId: 277598665
2019-10-30Clean up typos in test names.Dean Deng
PiperOrigin-RevId: 277572791
2019-10-29Add Close and Wait methods to stack.Ian Gudger
Link endpoints still don't have a unified way to be requested to stop. Updates #837 PiperOrigin-RevId: 277398952
2019-10-29Add endpoint tracking to the stack.Ian Gudger
In the future this will replace DanglingEndpoints. DanglingEndpoints must be kept for now due to issues with save/restore. This is arguably a cleaner design and allows the stack to know which transport endpoints might still be using its link endpoints. Updates #837 PiperOrigin-RevId: 277386633
2019-10-29Fix grammar in comment.Dean Deng
Missing "for". PiperOrigin-RevId: 277358513
2019-10-29Update symlink traversal limit when resolving interpreter path.Dean Deng
When execveat is called on an interpreter script, the symlink count for resolving the script path should be separate from the count for resolving the the corresponding interpreter. An ELOOP error should not occur if we do not hit the symlink limit along any individual path, even if the total number of symlinks encountered exceeds the limit. Closes #574 PiperOrigin-RevId: 277358474
2019-10-29Update build tags to allow Go 1.14Michael Pratt
Currently there are no ABI changes. We should check again closer to release. PiperOrigin-RevId: 277349744
2019-10-29Refactor logic for loadExecutable.Dean Deng
Separate the handling of filenames and *fs.File objects in a more explicit way for the sake of clarity. PiperOrigin-RevId: 277344203
2019-10-29Fix PollWithFullBufferBlocks.Bhasker Hariharan
Set the snd/rcv buffer sizes so that the test is deterministic and runs in a reasonable amount of time. It also ensures that we disable any auto-tuning of the send/receive buffer which may happen. PiperOrigin-RevId: 277337232
2019-10-29Allow waiting for Endpoint worker goroutines to finish.Ian Gudger
Updates #837 PiperOrigin-RevId: 277325162
2019-10-29Merge pull request #1087 from xiaobo55x:fstat_NlinkgVisor bot
PiperOrigin-RevId: 277324979
2019-10-29Support iterating an NDP options buffer.Ghanan Gowripalan
This change helps support iterating over an NDP options buffer so that implementations can handle all the NDP options present in an NDP packet. Note, this change does not yet actually handle these options, it just provides the tools to do so (in preparation for NDP's Prefix, Parameter, and a complete implementation of Neighbor Discovery). Tests: Unittests to make sure we can iterate over a valid NDP options buffer that may contain multiple options. Also tests to check an iterator before using it to see if the NDP options buffer is malformed. PiperOrigin-RevId: 277312487
2019-10-29Disallow execveat on interpreter scripts with fd opened with O_CLOEXEC.Dean Deng
When an interpreter script is opened with O_CLOEXEC and the resulting fd is passed into execveat, an ENOENT error should occur (the script would otherwise be inaccessible to the interpreter). This matches the actual behavior of Linux's execveat. PiperOrigin-RevId: 277306680
2019-10-28Deflake TestCheckpointRestoreFabricio Voznika
PiperOrigin-RevId: 277189064
2019-10-28Use the user supplied TCP MSS when creating a new active socketGhanan Gowripalan
This change supports using a user supplied TCP MSS for new active TCP connections. Note, the user supplied MSS must be less than or equal to the maximum possible MSS for a TCP connection's route. If it is greater than the maximum possible MSS, the maximum possible MSS will be used as the connection's MSS instead. This change does not use this user supplied MSS for connections accepted from listening sockets - that will come in a later change. Test: Test that outgoing TCP SYN segments contain a TCP MSS option with the user supplied MSS if it is not greater than the maximum possible MSS for the route. PiperOrigin-RevId: 277185125
2019-10-28Update commentMichael Pratt
FDTable.GetFile doesn't exist. PiperOrigin-RevId: 277089842
2019-10-28Cast the Stat_t.Nlink to uint64 on arm64.Haibo Xu
Since the syscall.Stat_t.Nlink is defined as different types on amd64 and arm64(uint64 and uint32 respectively), we need to cast them to a unified uint64 type in gVisor code. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I7542b99b195c708f3fc49b1cbe6adebdd2f6e96b
2019-10-25Aggregate arguments for loading executables into a single struct.Dean Deng
This change simplifies the function signatures of functions related to loading executables, such as LoadTaskImage, Load, loadBinary. PiperOrigin-RevId: 276821187
2019-10-25Validate the checksum for incoming ICMPv6 packetsGhanan Gowripalan
This change validates the ICMPv6 checksum field before further processing an ICMPv6 packet. Tests: Unittests to make sure that only ICMPv6 packets with a valid checksum are accepted/processed. Existing tests using checker.ICMPv6 now also check the ICMPv6 checksum field. PiperOrigin-RevId: 276779148
2019-10-25Convert DelayOption to the newer/faster SockOpt int type.Ian Gudger
DelayOption is set on all new endpoints in gVisor. PiperOrigin-RevId: 276746791
2019-10-25test/syscall: Remove duplicated gtest/gtest.h.Haibo
Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I05a7ec69b98b88931ba4a8adb3e8a7b822006001 COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1023 from xiaobo55x:syscall_test d44a8b1f827ed4081997af96cd58ba7449e0a9e1 PiperOrigin-RevId: 276740442
2019-10-25platform/ptrace: use tgkill instead of killAndrei Vagin
The syscall filters don't allow kill, just tgkill. PiperOrigin-RevId: 276718421
2019-10-25Merge pull request #1070 from lubinszARM:pr_abigVisor bot
PiperOrigin-RevId: 276609608
2019-10-24Add a type to represent the NDP Prefix Information option.Ghanan Gowripalan
This change is in preparation for NDP Prefix Discovery and SLAAC where the stack will need to handle NDP Prefix Information options. Tests: Test that given an NDP Prefix Information option buffer, correct values are returned by the field getters. PiperOrigin-RevId: 276594592
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
2019-10-24Remove the amss field from tcpip.tcp.handshake as it was unusedGhanan Gowripalan
The amss field in the tcpip.tcp.handshake was not used anywhere. Removed it to not cause confusion with the amss field in the tcpip.tcp.endpoint struct, which was documented to be used (and is actually being used) for the same purpose. PiperOrigin-RevId: 276577088
2019-10-24Use interface-specific NDP configurations instead of the stack-wide default.Ghanan Gowripalan
This change makes it so that NDP work is done using the per-interface NDP configurations instead of the stack-wide default NDP configurations to correctly implement RFC 4861 section 6.3.2 (note here, a host is a single NIC operating as a host device), and RFC 4862 section 5.1. Test: Test that we can set NDP configurations on a per-interface basis without affecting the configurations of other interfaces or the stack-wide default. Also make sure that after the configurations are updated, the updated configurations are used for NDP processes (e.g. Duplicate Address Detection). PiperOrigin-RevId: 276525661
2019-10-24slight changes to pkg/abiBin Lu
In glibc, some structures are defined differently on different platforms. Such as: C.struct_stat Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-10-24Handle AT_SYMLINK_NOFOLLOW flag for execveat.Dean Deng
PiperOrigin-RevId: 276441249
2019-10-23Handle AT_EMPTY_PATH flag in execveat.Dean Deng
PiperOrigin-RevId: 276419967
2019-10-23Add check for proper settings to AF_PACKET tests.Kevin Krakauer
As in packet_socket_raw.cc, we should check that certain proc files are set correctly. PiperOrigin-RevId: 276384534
2019-10-23Merge pull request #641 from tanjianfeng:mastergVisor bot
PiperOrigin-RevId: 276380008
2019-10-23Keep minimal available fd to accelerate fd allocationDarcySail
Use fd.next to store the iteration start position, which can be used to accelerate allocating new FDs. And adding the corresponding gtest benchmark to measure performance. @tanjianfeng COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/758 from DarcySail:master 96685ec7886dfe1a64988406831d3bc002b438cc PiperOrigin-RevId: 276351250
2019-10-23Inform netstack integrator when Duplicate Address Detection completesGhanan Gowripalan
This change introduces a new interface, stack.NDPDispatcher. It can be implemented by the netstack integrator to receive NDP related events. As of this change, only DAD related events are supported. Tests: Existing tests were modified to use the NDPDispatcher's DAD events for DAD tests where it needed to wait for DAD completing (failing and resolving). PiperOrigin-RevId: 276338733
2019-10-23Remove comparison between signed and unsigned intMichael Pratt
Some compilers don't like the comparison between int and size_t. Remove it. The other changes are minor style cleanups. PiperOrigin-RevId: 276333450
2019-10-23fix typokevin.xu
fix a typo
2019-10-23remove duplicated periodkevin.xu
remove a duplicated period
2019-10-22Merge pull request #1046 from tomlanyon:criogVisor bot
PiperOrigin-RevId: 276172466
2019-10-22Update const names to be Go style.Ian Lewis
PiperOrigin-RevId: 276165962
2019-10-22platform/ptrace: exit without panic if a stub process has been killed by SIGKILLAndrei Vagin
SIGKILL can be sent only by an user or OOM-killer. In both cases, we don't need to panic. PiperOrigin-RevId: 276150120
2019-10-22Add a type to represent the NDP Router Advertisement message.Ghanan Gowripalan
This change is in preparation for NDP Router Discovery where the stack will need to handle NDP Router Advertisments. Tests: Test that given an NDP Router Advertisement buffer (body of an ICMPv6 packet, correct values are returned by the field getters). PiperOrigin-RevId: 276146817
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