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2021-03-15Merge release-20210309.0-26-gec45d9692 (automated)gVisor bot
2021-03-15[op] Make gofer client handle return partial write length when err is nil.Ayush Ranjan
If there was a partial write (when not using the host FD) which did not generate an error, we were incorrectly returning the number of bytes attempted to write instead of the number of bytes actually written. PiperOrigin-RevId: 363058989
2021-03-15Merge release-20210309.0-25-g48915d17d (automated)gVisor bot
2021-03-15Merge pull request #5618 from iangudger:unix-transport-racegVisor bot
PiperOrigin-RevId: 362999220
2021-03-12Merge release-20210301.0-44-g82d7fb2cb (automated)gVisor bot
2021-03-11improve readability of ports packageKevin Krakauer
Lots of small changes: - simplify package API via Reservation type - rename some single-letter variable names that were hard to follow - rename some types PiperOrigin-RevId: 362442366
2021-03-12Merge release-20210301.0-43-g192318a23 (automated)gVisor bot
2021-03-11fusefs: Implement default_permissions and allow_other mount options.Rahat Mahmood
By default, fusefs defers node permission checks to the server. The default_permissions mount option enables the usual unix permission checks based on the node owner and mode bits. Previously fusefs was incorrectly checking permissions unconditionally. Additionally, fusefs should restrict filesystem access to processes started by the mount owner to prevent the fuse daemon from gaining priviledge over other processes. The allow_other mount option overrides this behaviour. Previously fusefs was incorrectly skipping this check. Updates #3229 PiperOrigin-RevId: 362419092
2021-03-12Merge release-20210301.0-37-gc5667022b (automated)gVisor bot
2021-03-11Clear Merkle tree files in RuntimeEnable modeChong Cai
The Merkle tree files need to be cleared before enabling to avoid redundant content. PiperOrigin-RevId: 362409591
2021-03-11Report filesystem-specific mount options.Rahat Mahmood
PiperOrigin-RevId: 362406813
2021-03-11Merge release-20210301.0-35-g1020ac83f (automated)gVisor bot
2021-03-11Move Arch specific code to arch specific files.Bhasker Hariharan
PiperOrigin-RevId: 362297474
2021-03-10Merge release-20210301.0-31-g2a888a106 (automated)gVisor bot
2021-03-09Give TCP flags a dedicated typeZeling Feng
- Implement Stringer for it so that we can improve error messages. - Use TCPFlags through the code base. There used to be a mixed usage of byte, uint8 and int as TCP flags. PiperOrigin-RevId: 361940150
2021-03-09Merge release-20210301.0-29-gabbdcebc5 (automated)gVisor bot
2021-03-08Implement /proc/sys/net/ipv4/ip_local_port_rangeKevin Krakauer
Speeds up the socket stress tests by a couple orders of magnitude. PiperOrigin-RevId: 361721050
2021-03-06Merge release-20210301.0-20-gfb733cdb8 (automated)gVisor bot
2021-03-05Increment the counters when sending Echo requestsArthur Sfez
Updates #5597 PiperOrigin-RevId: 361252003
2021-03-05Merge release-20210301.0-19-g2db8f7485 (automated)gVisor bot
2021-03-05Fix network protocol/endpoint lock order violationGhanan Gowripalan
IPv4 would violate the lock ordering of protocol > endpoint when closing network endpoints by calling `ipv4.protocol.forgetEndpoint` while holding the network endpoint lock. PiperOrigin-RevId: 361232817
2021-03-05Merge release-20210301.0-18-g498709250 (automated)gVisor bot
2021-03-05Include duplicate address holder info in DADResultGhanan Gowripalan
The integrator may be interested in who owns a duplicate address so pass this information (if available) along. Fixes #5605. PiperOrigin-RevId: 361213556
2021-03-05Implement IterDirent in verity fsChong Cai
PiperOrigin-RevId: 361196154
2021-03-05Merge release-20210301.0-15-g3e8e2cad8 (automated)gVisor bot
2021-03-05Make stack.DADResult an interfaceGhanan Gowripalan
While I'm here, update NDPDispatcher.OnDuplicateAddressDetectionStatus to take a DADResult and rename it to OnDuplicateAddressDetectionResult. Fixes #5606. PiperOrigin-RevId: 360965416
2021-03-04Merge release-20210301.0-14-ga9face757 (automated)gVisor bot
2021-03-04Nit fix: Should use maxTimeout in backoffTimerTing-Yu Wang
The only user is in (*handshake).complete and it specifies MaxRTO, so there is no behavior changes. PiperOrigin-RevId: 360954447
2021-03-04Fix race in unix socket transport.Ian Gudger
transport.baseEndpoint.receiver and transport.baseEndpoint.connected are protected by transport.baseEndpoint.Mutex. In order to access them without holding the mutex, we must make a copy. Notifications must be sent without holding the mutex, so we need the values without holding the mutex.
2021-03-03Deflake //pkg/tcpip/tests/integration:forward_testTing-Yu Wang
clientEP.Connect may fail because serverEP was not listening. PiperOrigin-RevId: 360780667
2021-03-04Merge release-20210301.0-12-g1cd76d958 (automated)gVisor bot
2021-03-03Make dedicated methods for data operations in PacketBufferTing-Yu Wang
One of the preparation to decouple underlying buffer implementation. There are still some methods that tie to VectorisedView, and they will be changed gradually in later CLs. This CL also introduce a new ICMPv6ChecksumParams to replace long list of parameters when calling ICMPv6Checksum, aiming to be more descriptive. PiperOrigin-RevId: 360778149
2021-03-03Merge release-20210301.0-11-gcfd2c3196 (automated)gVisor bot
2021-03-03Remove dependency on golang.org/x/sys/unixTamir Duberstein
(*os.PathError).Timeout does the same thing. PiperOrigin-RevId: 360756784
2021-03-03Merge release-20210301.0-10-g9c80bcf32 (automated)gVisor bot
2021-03-03Merge release-20210301.0-8-g3e69f5d08 (automated)gVisor bot
2021-03-03Assert UpdatedAtNanos in neighbor cache testsSam Balana
Changes the neighbor_cache_test.go tests to always assert UpdatedAtNanos. Completes the assertion of UpdatedAtNanos in every NUD test, a field that was historically not checked due to the lack of a deterministic, controllable clock. This is no longer true with the tcpip.Clock interface. While the tests have been adjusted to use Clock, asserting by the UpdatedAtNanos was neglected. Fixes #4663 PiperOrigin-RevId: 360730077
2021-03-03Merge release-20210301.0-7-g80bc67c26 (automated)gVisor bot
2021-03-03Add checklocks analyzer.Bhasker Hariharan
This validates that struct fields if annotated with "// checklocks:mu" where "mu" is a mutex field in the same struct then access to the field is only done with "mu" locked. All types that are guarded by a mutex must be annotated with // +checklocks:<mutex field name> For more details please refer to README.md. PiperOrigin-RevId: 360729328
2021-03-03Export stats that were forgottenArthur Sfez
While I'm here, simplify the comments and unify naming of certain stats across protocols. PiperOrigin-RevId: 360728849
2021-03-03Merge release-20210301.0-5-ga9441aea2 (automated)gVisor bot
2021-03-03[op] Replace syscall package usage with golang.org/x/sys/unix in pkg/.Ayush Ranjan
The syscall package has been deprecated in favor of golang.org/x/sys. Note that syscall is still used in the following places: - pkg/sentry/socket/hostinet/stack.go: some netlink related functionalities are not yet available in golang.org/x/sys. - syscall.Stat_t is still used in some places because os.FileInfo.Sys() still returns it and not unix.Stat_t. Updates #214 PiperOrigin-RevId: 360701387
2021-03-02Merge release-20210208.0-107-g6bc27946a (automated)gVisor bot
2021-03-02Plumb link address request errors up to requesterTamir Duberstein
Prevent the situation where callers to (*stack).GetLinkAddress provide incorrect arguments and are unable to observe this condition. Updates #5583. PiperOrigin-RevId: 360481557
2021-03-01Merge release-20210208.0-106-g865ca64ee (automated)gVisor bot
2021-03-01tcp: endpoint.Write has to send all data that has been read from payloadAndrei Vagin
io.Reader.ReadFull returns the number of bytes copied and an error if fewer bytes were read. PiperOrigin-RevId: 360247614
2021-02-27Merge release-20210208.0-105-g037bb2f45 (automated)gVisor bot
2021-02-26Fix panic due to zero length writes in TCP.Bhasker Hariharan
There is a short race where in Write an endpoint can transition from writable to non-writable state due to say an incoming RST during the time we release the endpoint lock and reacquire after copying the payload. In such a case if the write happens to be a zero sized write we end up trying to call sendData() even though nothing was queued. This can panic when trying to enable/disable TCP timers if the endpoint had already transitioned to a CLOSED/ERROR state due to the incoming RST as we cleanup timers when the protocol goroutine terminates. Sadly the race window is small enough that my attempts at reproducing the panic in a syscall test has not been successful. PiperOrigin-RevId: 359887905
2021-02-26Assert UpdatedAtNanos in neighbor entry testsSam Balana
Changes the neighbor_entry_test.go tests to always assert UpdatedAtNanos. This field was historically not checked due to the lack of a deterministic, controllable clock. This is no longer true with the tcpip.Clock interface. While the tests have been adjusted to use Clock, asserting by the UpdatedAtNanos was neglected. Subsequent work is needed to assert UpdatedAtNanos in the neighbor cache tests. Updates #4663 PiperOrigin-RevId: 359868254
2021-02-26Embed sync.Mutex for entryTestLinkResolver and testNUDDispatcherSam Balana
Converts entryTestLinkResolver and testNUDDispatcher to use the embedded sync.Mutex pattern for fields that may be accessed concurrently from different gorountines. Fixes #5541 PiperOrigin-RevId: 359826169
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