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2021-03-17Merge release-20210309.0-37-g4065604e1 (automated)gVisor bot
2021-03-17Drop loopback traffic from outside of the stackGhanan Gowripalan
Loopback traffic should be stack-local but gVisor has some clients that depend on the ability to receive loopback traffic that originated from outside of the stack. Because of this, we guard this change behind IP protocol options. Test: integration_test.TestExternalLoopbackTraffic PiperOrigin-RevId: 363461242
2021-03-17Merge release-20210309.0-36-g3dd7ad13b (automated)gVisor bot
2021-03-16Fix tcp_fin_retransmission_netstack_testZeling Feng
Netstack does not check ACK number for FIN-ACK packets and goes into TIMEWAIT unconditionally. Fixing the state machine will give us back the retransmission of FIN. PiperOrigin-RevId: 363301883
2021-03-16Merge release-20210309.0-35-g5eede4e75 (automated)gVisor bot
2021-03-16Fix a race with synRcvdCount and acceptMithun Iyer
There is a race in handling new incoming connections on a listening endpoint that causes the endpoint to reply to more incoming SYNs than what is permitted by the listen backlog. The race occurs when there is a successful passive connection handshake and the synRcvdCount counter is decremented, followed by the endpoint delivered to the accept queue. In the window of time between synRcvdCount decrementing and the endpoint being enqueued for accept, new incoming SYNs can be handled without honoring the listen backlog value, as the backlog could be perceived not full. Fixes #5637 PiperOrigin-RevId: 363279372
2021-03-16Merge release-20210309.0-34-g607a1e481 (automated)gVisor bot
2021-03-16setgid directory support in overlayfsKevin Krakauer
PiperOrigin-RevId: 363276495
2021-03-16Merge release-20210309.0-33-g05193de1c (automated)gVisor bot
2021-03-16Unexport methods on NDPOptionGhanan Gowripalan
They are not used outside of the header package. PiperOrigin-RevId: 363237708
2021-03-16Merge release-20210309.0-32-g68065d1ce (automated)gVisor bot
2021-03-16Detect looped-back NDP DAD messagesGhanan Gowripalan
...as per RFC 7527. If a looped-back DAD message is received, do not fail DAD since our own DAD message does not indicate that a neighbor has the address assigned. Test: ndp_test.TestDADResolveLoopback PiperOrigin-RevId: 363224288
2021-03-16Merge release-20210309.0-31-gebd7c1b88 (automated)gVisor bot
2021-03-16Do not call into Stack from LinkAddressRequestGhanan Gowripalan
Calling into the stack from LinkAddressRequest is not needed as we already have a reference to the network endpoint (IPv6) or network interface (IPv4/ARP). PiperOrigin-RevId: 363213973
2021-03-16Merge release-20210309.0-30-gf7e841c2c (automated)gVisor bot
2021-03-15Turn sys_thread constants into variables.Etienne Perot
PiperOrigin-RevId: 363092268
2021-03-16Merge release-20210309.0-29-gf4b742182 (automated)gVisor bot
2021-03-15Move `MaxIovs` back to a variable in `iovec.go`.Etienne Perot
PiperOrigin-RevId: 363091954
2021-03-16Merge release-20210309.0-27-gb1d578772 (automated)gVisor bot
2021-03-15Make netstack (//pkg/tcpip) buildable for 32 bitKevin Krakauer
Doing so involved breaking dependencies between //pkg/tcpip and the rest of gVisor, which are discouraged anyways. Tested on the Go branch via: gvisor.dev/gvisor/pkg/tcpip/... Addresses #1446. PiperOrigin-RevId: 363081778
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
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