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2020-04-08Do not hold FileDescription references in VFS2 procfs inodes.Jamie Liu
FileDescription references are side-effectual; for example, holding a reference on the write end of a pipe prevents reads from the read end from returning EOF. This change is consistent with Linux, but not VFS1; while VFS1 also has this bug, it's less visible there since VFS1 procfs disables caching. Updates #1195 PiperOrigin-RevId: 305545099
2020-04-08Enable SubprocessExited and SubprocessZombie for gVisorFabricio Voznika
Updates #164 PiperOrigin-RevId: 305544029
2020-04-08Return all packets when Expect fails.Eyal Soha
PiperOrigin-RevId: 305466309
2020-04-08tests: Specify NoRandomSave for PortReuse testsAndrei Vagin
SO_REUSEPORT is not properly restored: https://github.com/google/gvisor/issues/873 PiperOrigin-RevId: 305422775
2020-04-07Add friendlier messages for frequently encountered errors.Ian Lewis
Issue #2270 Issue #1765 PiperOrigin-RevId: 305385436
2020-04-07Update TODO to #238Ian Lewis
Move TODO to #238 so that proper synchronization of operations is handled when we create the urpc client. Issue #238 Fixes #512 PiperOrigin-RevId: 305383924
2020-04-07Make unlink tests pass with goferfsFabricio Voznika
Required directory checks were being skipped when there was no child cached. Now the code always loads the child file before unlinking it. Updates #1198 PiperOrigin-RevId: 305382323
2020-04-07Test TCP sender behavior against window shrinkinggVisor bot
RFC 1122 Section 3.7: A sending TCP MUST be robust against window shrinking, which may cause the "useable window" to become negative. PiperOrigin-RevId: 305377072
2020-04-07Don't map the 0 uid into a sandbox user namespaceAndrei Vagin
Starting with go1.13, we can specify ambient capabilities when we execute a new process with os/exe.Cmd. PiperOrigin-RevId: 305366706
2020-04-07Correctly distinguish between seekable and non-seekable host fds.Dean Deng
Check whether an fd is seekable by calling the seek syscall and examining the return value, instead of checking the file type, which is inaccurate. PiperOrigin-RevId: 305361593
2020-04-07Remove TODOs for local gofer extended attributes.Dean Deng
PiperOrigin-RevId: 305344989
2020-04-07Remove out-of-date TODOs.Ting-Yu Wang
We already have network namespace for netstack. PiperOrigin-RevId: 305341954
2020-04-07Internal change.gVisor bot
PiperOrigin-RevId: 305341059
2020-04-07Require that IPv6 headers be in the first fragmentGhanan Gowripalan
Test: - header_test.TestIPv6ExtHdrIter - ipv6_test.TestReceiveIPv6Fragments Updates #2197, #2333 PiperOrigin-RevId: 305330178
2020-04-07mkdir test: Address TODOs and re-enable a test.Ting-Yu Wang
PiperOrigin-RevId: 305328184
2020-04-07Make gofer.dentry.destroyLocked idempotentFabricio Voznika
gofer operations accumulate dentries touched in a slice to call checkCachingLocked on them when the operation is over. In case the same dentry is touched multiple times during the operation, checkCachingLocked, and consequently destroyLocked, may be called more than once for the same dentry. Updates #1198 PiperOrigin-RevId: 305276819
2020-04-06Add concurrency guarantees to p9 extended attribute methods.Dean Deng
PiperOrigin-RevId: 305171772
2020-04-06Sort posix service functionsEyal Soha
PiperOrigin-RevId: 305157179
2020-04-06Correctly implement magic symlinks in VFS2 procfs.Jamie Liu
Updates #1195 PiperOrigin-RevId: 305143567
2020-04-06Port timerfd to VFS2.Nicolas Lacasse
PiperOrigin-RevId: 305067208
2020-04-06Bump up acceptable sample count for flaky itimer test.Dean Deng
Running the test 1000x almost always produces 1+ test failures where the sample count is slightly more than 60. PiperOrigin-RevId: 305051754
2020-04-06Add socket files to tmpfs VFS2.Dean Deng
Updates #1476. PiperOrigin-RevId: 305024274
2020-04-06Implement Stringer for LayerEyal Soha
Tested: Sample output for printing 3 different Layer structs: &testbench.Ether{SrcAddr:02:42:c4:77:5d:14 DstAddr:02:42:c4:77:5d:0a} &testbench.IPv4{SrcAddr:196.119.93.20 DstAddr:224.0.0.1} &testbench.UDP{SrcPort:0xc00033b260 DstPort:0xc00033b280} Sample output for printing a Layers struct (word-wrapped): [&testbench.Ether{SrcAddr:02:42:c4:77:5d:14 DstAddr:02:42:c4:77:5d:0a} &testbench.IPv4{SrcAddr:196.119.93.20 DstAddr:224.0.0.1} &testbench.UDP{SrcPort:0xc00033b260 DstPort:0xc00033b280} &testbench.Payload{Bytes:[104 101 108 108 111 32 119 111 114 108 100]}] PiperOrigin-RevId: 305014376
2020-04-04Record VFS2 sockets in global socket map.Dean Deng
Updates #1476, #1478, #1484, #1485. PiperOrigin-RevId: 304845354
2020-04-03Refactor software GSO code.Bhasker Hariharan
Software GSO implementation currently has a complicated code path with implicit assumptions that all packets to WritePackets carry same Data and it does this to avoid allocations on the path etc. But this makes it hard to reuse the WritePackets API. This change breaks all such assumptions by introducing a new Vectorised View API ReadToVV which can be used to cleanly split a VV into multiple independent VVs. Further this change also makes packet buffers linkable to form an intrusive list. This allows us to get rid of the array of packet buffers that are passed in the WritePackets API call and replace it with a list of packet buffers. While this code does introduce some more allocations in the benchmarks it doesn't cause any degradation. Updates #231 PiperOrigin-RevId: 304731742
2020-04-03Add FileDescriptionImpl for Unix sockets.Dean Deng
This change involves several steps: - Refactor the VFS1 unix socket implementation to share methods between VFS1 and VFS2 where possible. Re-implement the rest. - Override the default PRead, Read, PWrite, Write, Ioctl, Release methods in FileDescriptionDefaultImpl. - Add functions to create and initialize a new Dentry/Inode and FileDescription for a Unix socket file. Updates #1476 PiperOrigin-RevId: 304689796
2020-04-03Ensure EOF is handled propertly during splice.Adin Scannell
PiperOrigin-RevId: 304684417
2020-04-03Deflake //third_party/gvisor/test/perf:getdents_benchmark_runsc_ptraceAndrei Vagin
* Increase a buffer size for getdents64 * Increase a number of shards PiperOrigin-RevId: 304670004
2020-04-03Add missing newlineTamir Duberstein
PiperOrigin-RevId: 304659346
2020-04-03Internal change.gVisor bot
PiperOrigin-RevId: 304641990
2020-04-02Avoid sending a partial dirent when the Rreaddir response exceeds message limit.Uros Prestor
PiperOrigin-RevId: 304542967
2020-04-02Add NAME_MAX checks and update file timesFabricio Voznika
NAME_MAX should be enforced per filesystem implementation because other file systems may not have the same restriction. Gofer filesystem now keeps a reference to the kernel clock to avoid lookup in the Context on file access to update atime. Update access, modification, and status change times in tmpfs. Updates #1197, #1198. PiperOrigin-RevId: 304527148
2020-04-02Drop NDP messages with fragment extension headerGhanan Gowripalan
As per RFC 6980 section 5, nodes MUST silently ignore NDP messages if the packet carrying them include an IPv6 Fragmentation Header. Test: ipv6_test.TestNDPValidation PiperOrigin-RevId: 304519379
2020-04-02Fix typo in TODO comments.Dean Deng
PiperOrigin-RevId: 304508083
2020-04-02Add equivalents to FMODE_PREAD/PWRITE to VFS2.Jamie Liu
This is mostly required for PipeTest_OffsetCalls. The options are DenyPRead/PWrite rather than AllowPRead/PWrite since, in Linux terms, fs/open.c:do_dentry_open sets FMODE_PREAD|FMODE_PWRITE unconditionally (although it allows filesystem implementations of open to unset these flags), so they're set for most FDs; it's usually FDs created outside of open(2) that don't get them, e.g.: - Syscall-created pipes (fs/pipe.c:create_pipe_files => fs/file_table.c:alloc_file_pseudo) - Epoll instances (fs/eventpoll.c:do_epoll_create => fs/anon_inodes.c:anon_inode_getfile => alloc_file_pseudo) - Sockets (net/socket.c:sock_alloc_file => alloc_file_pseudo) This CL adds the flags to epoll instances; a subsequent CL reworks the VFS2 implementation of pipe FDs to be filesystem-independent and adds the flags there, and sockets aren't implemented yet. Updates #1035 PiperOrigin-RevId: 304506434
2020-04-02Increment NDP message RX stats before validationGhanan Gowripalan
Tests: - ipv6_test.TestHopLimitValidation - ipv6_test.TestRouterAdvertValidation PiperOrigin-RevId: 304495723
2020-04-02Rename files in //pkg/sync to better reflect what they contain.Jamie Liu
PiperOrigin-RevId: 304447031
2020-04-02Fix typo in benchmarks.shZach Koopmans
PiperOrigin-RevId: 304440599
2020-04-02Fix flaky TCPLinger2TimeoutAfterClose test.Bhasker Hariharan
The test is flaky in cooperative S/R mode because TCP timers are not restored across a S/R. This can cause the TCPLinger2 timer to not fire. This change disables S/R before setting the TCP_LINGER2 timeout. PiperOrigin-RevId: 304430536
2020-04-01Add "/snap/bin" to PATH.Zach Koopmans
"gcloud" may be installed as a snap, under "/snap/bin". Make sure this is in our PATH so that we can use gcloud. PiperOrigin-RevId: 304297180
2020-04-01go-marshal: Allow array lens to be consts and simple expressions.Rahat Mahmood
Previously, go-marshal only allowed literals for array lengths. However, it's very common for ABI structs to have a fix-sized array whose length is defined by a constant; for example PATH_MAX. Having to convert all such arrays to have literal lengths is too awkward. PiperOrigin-RevId: 304289345
2020-04-01Deflake tcpip/stack:stack_x_testGhanan Gowripalan
Timeouts were increased to deflake pkg/tcpip/stack:stack_x_test tests that depend on timers. Some timeouts used previously were intended for tests that do not depend on timers, so this change updates those timeouts to give more time for a timer-based event to occur. This change also de-parallelizes non-subtests to reduce the number of active timers. Test: bazel test //pkg/tcpip/stack:stack_x_test --runs_per_test=500 PiperOrigin-RevId: 304287622
2020-04-01Pass configurable FilesystemType to tmpfs.Nicolas Lacasse
PiperOrigin-RevId: 304234086
2020-04-01Add context.Context argument to XxxWithErrno functionsEyal Soha
This allows control over the gRPC timeouts as needed. PiperOrigin-RevId: 304225713
2020-04-01Automated rollback of changelist 303799678Adin Scannell
PiperOrigin-RevId: 304221302
2020-04-01Fix 386 build tagsMichael Pratt
The build tag for 32-bit x86 is 386, not i386. Updates #2298 PiperOrigin-RevId: 304206373
2020-04-01Add FileDescription interface for socket files.Dean Deng
Refactor the existing socket interface to share methods between VFS1 and VFS2. The method signatures do not contain anything filesystem-related, so they don't need to be re-defined for VFS2. Updates #1476, #1478, #1484, #1485. PiperOrigin-RevId: 304184545
2020-04-01go-marshal: Improve collision detection of import statments.Rahat Mahmood
Previously, the import statement collision detection mechanism aborted go-marshal whenever it detected two imports in any package that has the same local name. Consider this trivial package, defined by the the following two source files: file1.go: package example import ( path/a/to/foo ) ... file2.go: package example import ( another/package/with/final/component/foo ) ... Go-marshal previously couldn't handle generating code for the the above package, even if none of the types marked for marshalling used either of the imported foo packages. This turns out to be too restrictive as we run into this a lot in practice. Examples include "encoding/binary" vs "gvisor/pkg/binary/binary", and "sync" vs "gvisor/pkg/sync/sync". This change allows go-marshal to proceed with marshalling, and only abort if the code generated by go-marshal references any such ambiguous import names. PiperOrigin-RevId: 304131190
2020-03-31Implement automated marshalling for slices of Marshallable types.Rahat Mahmood
PiperOrigin-RevId: 304119255
2020-03-31Test receiving multicast packets over UDPEyal Soha
PiperOrigin-RevId: 304098611
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