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2021-01-12[rack] Set up TLP timer and configure timeout.Ayush Ranjan
This change implements TLP details enumerated in https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.1. Fixes #5083 PiperOrigin-RevId: 351467357
2021-01-12Fix simple mistakes identified by goreportcard.Adin Scannell
These are primarily simplification and lint mistakes. However, minor fixes are also included and tests added where appropriate. PiperOrigin-RevId: 351425971
2021-01-07Fix tuntap_test to cleanup after CreateInterfaceNoCapMithun Iyer
PiperOrigin-RevId: 350646249
2021-01-07netstack: Refactor tcpip.Endpoint.ReadTing-Yu Wang
Read now takes a destination io.Writer, count, options. Keeping the method name Read, in contrast to the Write method. This enables: * direct transfer of views under VV * zero copy It also eliminates the need for sentry to keep a slice of view because userspace had requested a read that is smaller than the view returned, removing the complexity there. Read/Peek/ReadPacket are now consolidated together and some duplicate code is removed. PiperOrigin-RevId: 350636322
2021-01-06Run external networking testKevin Krakauer
PiperOrigin-RevId: 350438564
2021-01-06Support add/remove IPv6 multicast group sock optGhanan Gowripalan
IPv4 was always supported but UDP never supported joining/leaving IPv6 multicast groups via socket options. Add: IPPROTO_IPV6, IPV6_JOIN_GROUP/IPV6_ADD_MEMBERSHIP Remove: IPPROTO_IPV6, IPV6_LEAVE_GROUP/IPV6_DROP_MEMBERSHIP Test: integration_test.TestUDPAddRemoveMembershipSocketOption PiperOrigin-RevId: 350396072
2021-01-05Don't check that msg_flags contains MSG_ERRQUEUE on gvisor platforms.Andrei Vagin
PiperOrigin-RevId: 350246333
2021-01-05fs/fuse: check that a task has a specified file descriptorAndrei Vagin
Reported-by: syzbot+814105309d2ae8651084@syzkaller.appspotmail.com PiperOrigin-RevId: 350159452
2020-12-30Add test for open(2) with O_WRONLY|O_RDWR.Dean Deng
PiperOrigin-RevId: 349607959
2020-12-29Deflake semaphore_test_nativeJing Chen
PiperOrigin-RevId: 349490873
2020-12-29Export socket_ipv6_udp_unbound_loopback.ccTamir Duberstein
PiperOrigin-RevId: 349458984
2020-12-28Merge pull request #5166 from kevinGC:bk-warningsgVisor bot
PiperOrigin-RevId: 349314945
2020-12-23Resolve compiler warningsKevin Krakauer
The buildkite syscall tests start with a lot of C++ warnings. This cleans that up a little.
2020-12-23vfs1: don't allow to open socket filesAndrei Vagin
open() has to return ENXIO in this case. O_PATH isn't supported by vfs1. PiperOrigin-RevId: 348820478
2020-12-22Internal change.gVisor bot
PiperOrigin-RevId: 348720223
2020-12-17Fix seek on /proc/pid/cmdline when task is zombie.Nicolas Lacasse
PiperOrigin-RevId: 348056159
2020-12-17[netstack] Implement IP(V6)_RECVERR socket option.Ayush Ranjan
PiperOrigin-RevId: 348055514
2020-12-15Implement command SEM_INFO and SEM_STAT for semctl.Jing Chen
PiperOrigin-RevId: 347711998
2020-12-15Fix error code for connect in raw sockets.Nayana Bidari
PiperOrigin-RevId: 347650354
2020-12-14[netstack] Update raw socket and hostinet control message parsing.Ayush Ranjan
There are surprisingly few syscall tests that run with hostinet. For example running the following command only returns two results: `bazel query test/syscalls:all | grep hostnet` I think as a result, as our control messages evolved, hostinet was left behind. Update it to support all control messages netstack supports. This change also updates sentry's control message parsing logic to make it up to date with all the control messages we support. PiperOrigin-RevId: 347508892
2020-12-14Move SO_ERROR and SO_OOBINLINE option to socketops.Nayana Bidari
SO_OOBINLINE option is set/get as boolean value, which is the same as linux. As we currently do not support disabling this option, we always return it as true. PiperOrigin-RevId: 347413905
2020-12-11Fix panic when IPv4 address is used in sendmsg for IPv6 socketsNayana Bidari
We do not rely on error for getsockopt options(which have boolean values) anymore. This will cause issue in sendmsg where we used to return error for IPV6_V6Only option. Fix the panic by returning error (for sockets other than TCP and UDP) if the address does not match the type(AF_INET/AF_INET6) of the socket. PiperOrigin-RevId: 347063838
2020-12-11Make semctl IPC_INFO cmd return the index of highest used entry.Jing Chen
PiperOrigin-RevId: 346973338
2020-12-09Add support for IP_RECVORIGDSTADDR IP option.Bhasker Hariharan
Fixes #5004 PiperOrigin-RevId: 346643745
2020-12-06Merge pull request #4932 from lubinszARM:pr_test_exceptionsgVisor bot
PiperOrigin-RevId: 345976554
2020-12-04Remove invalid test case.Adin Scannell
The next test case is perfectly valid, which creates a test directory with appropriate permissions and ensures that you can't create a file. This test case assumes that the root directory has certain permissions. In this case, we may have EROFS instead of a permission error, but it's perfectly plausible that no error occurs at all. The test is not valid. PiperOrigin-RevId: 345764412
2020-12-04Initialize has_tid for correctness.Adin Scannell
PiperOrigin-RevId: 345763209
2020-12-03Implement command IPC_INFO for semctl.Jing Chen
PiperOrigin-RevId: 345589628
2020-12-03Implement `fcntl` options `F_GETSIG` and `F_SETSIG`.Etienne Perot
These options allow overriding the signal that gets sent to the process when I/O operations are available on the file descriptor, rather than the default `SIGIO` signal. Doing so also populates `siginfo` to contain extra information about which file descriptor caused the event (`si_fd`) and what events happened on it (`si_band`). The logic around which FD is populated within `si_fd` matches Linux's, which means it has some weird edge cases where that value may not actually refer to a file descriptor that is still valid. This CL also ports extra S/R logic regarding async handler in VFS2. Without this, async I/O handlers aren't properly re-registered after S/R. PiperOrigin-RevId: 345436598
2020-12-03Support partitions for other tests.Adin Scannell
PiperOrigin-RevId: 345399936
2020-12-02Fix chown test.Adin Scannell
PiperOrigin-RevId: 345265342
2020-12-02Skip CanKillAllPIDs when running natively.Adin Scannell
This is quite disruptive to run in some environments. PiperOrigin-RevId: 345247206
2020-12-02Add /proc/sys/kernel/sem.Jing Chen
PiperOrigin-RevId: 345178956
2020-11-30Fix deadlock in UDP handleControlPacket path.Bhasker Hariharan
Fixing the sendto deadlock exposed yet another deadlock where a lock inversion occurs on the handleControlPacket path where e.mu and demuxer.epsByNIC.mu are acquired in reverse order from say when RegisterTransportEndpoint is called in endpoint.Connect(). This fix sidesteps the issue by just making endpoint.state an atomic and gets rid of the need to acquire e.mu in e.HandleControlPacket. PiperOrigin-RevId: 344939895
2020-11-25arm64 test: add exceptions related test casesRobin Luk
For now, I only added a halt test case for Arm64. Signed-off-by: Robin Luk <lubin.lu@antgroup.com>
2020-11-23Omit sandbox from chown test.Adin Scannell
This test fails because it must include additional UIDs. Omit the bazel sandbox to ensure that it can function correctly. PiperOrigin-RevId: 343927190
2020-11-23Ignore permission failures in CheckDuplicatesRecursively.Adin Scannell
Not all files are always accessible by the process itself. This was specifically seen with map_files, but there's no rule that every entry must be accessible by the process itself. PiperOrigin-RevId: 343919117
2020-11-19Internal change.gVisor bot
PiperOrigin-RevId: 343419851
2020-11-19Propagate IP address prefix from host to netstackFabricio Voznika
Closes #4022 PiperOrigin-RevId: 343378647
2020-11-18[netstack] Move SO_KEEPALIVE and SO_ACCEPTCONN option to SocketOptions.Ayush Ranjan
PiperOrigin-RevId: 343217712
2020-11-18[netstack] Move SO_REUSEPORT and SO_REUSEADDR option to SocketOptions.Ayush Ranjan
This changes also introduces: - `SocketOptionsHandler` interface which can be implemented by endpoints to handle endpoint specific behavior on SetSockOpt. This is analogous to what Linux does. - `DefaultSocketOptionsHandler` which is a default implementation of the above. This is embedded in all endpoints so that we don't have to uselessly implement empty functions. Endpoints with specific behavior can override the embedded method by manually defining its own implementation. PiperOrigin-RevId: 343158301
2020-11-18[netstack] Move SO_NO_CHECK option to SocketOptions.Ayush Ranjan
PiperOrigin-RevId: 343146856
2020-11-18[netstack] Move SO_PASSCRED option to SocketOptions.Ayush Ranjan
This change also makes the following fixes: - Make SocketOptions use atomic operations instead of having to acquire/drop locks upon each get/set option. - Make documentation more consistent. - Remove tcpip.SocketOptions from socketOpsCommon because it already exists in transport.Endpoint. - Refactors get/set socket options tests to be easily extendable. PiperOrigin-RevId: 343103780
2020-11-17Fix possible deadlock in UDP.Write().Bhasker Hariharan
In UDP endpoint.Write() sendUDP is called with e.mu Rlocked. But if this happens to send a datagram over loopback which ends up generating an ICMP response of say ErrNoPortReachable, the handling of the response in HandleControlPacket also acquires e.mu using RLock. This is mostly fine unless there is a competing caller trying to acquire e.mu in exclusive mode using Lock(). This will deadlock as a caller waiting in Lock() disallows an new RLocks() to ensure it can actually acquire the Lock. This is documented here https://golang.org/pkg/sync/#RWMutex. This change releases the endpoint mutex before calling sendUDP to resolve the possibility of the deadlock. Reported-by: syzbot+537989797548c66e8ee3@syzkaller.appspotmail.com Reported-by: syzbot+eb0b73b4ab486f7673ba@syzkaller.appspotmail.com PiperOrigin-RevId: 342894148
2020-11-17Fix SO_ERROR behavior for TCP in gVisor.Bhasker Hariharan
Fixes the behaviour of SO_ERROR for tcp sockets where in linux it returns sk->sk_err and if sk->sk_err is 0 then it returns sk->sk_soft_err. In gVisor TCP we endpoint.HardError is the equivalent of sk->sk_err and endpoint.LastError holds soft errors. This change brings this into alignment with Linux such that both hard/soft errors are cleared when retrieved using getsockopt(.. SO_ERROR) is called on a socket. Fixes #3812 PiperOrigin-RevId: 342868552
2020-11-16Reset watchdog timer between sendfile() iterations.Jamie Liu
As part of this, change Task.interrupted() to not drain Task.interruptChan, and do so explicitly using new function Task.unsetInterrupted() instead. PiperOrigin-RevId: 342768365
2020-11-13Disable save/restore in PartialBadBufferTest.SendMsgTCP.Jamie Liu
PiperOrigin-RevId: 342314586
2020-11-12Deflake tcp_socket test.Mithun Iyer
Increase the wait time for the thread to be blocked on read/write syscall. PiperOrigin-RevId: 342204627
2020-11-12Refactor SOL_SOCKET optionsNayana Bidari
Store all the socket level options in a struct and call {Get/Set}SockOpt on this struct. This will avoid implementing socket level options on all endpoints. This CL contains implementing one socket level option for tcp and udp endpoints. PiperOrigin-RevId: 342203981
2020-11-09Skip `EventHUp` notify in `FIN_WAIT2` on a socket close.Mithun Iyer
This Notify was added as part of cl/279106406; but notifying `EventHUp` in `FIN_WAIT2` is incorrect, as we want to only notify later on `TIME_WAIT` or a reset. However, we do need to notify any blocked waiters of an activity on the endpoint with `EventIn`|`EventOut`. PiperOrigin-RevId: 341490913
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