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2020-02-10Refactor getxattr.Dean Deng
Put most of the logic for getxattr in one place for clarity. This simplifies FGetXattr and getXattrFromPath, which are just wrappers for getXattr. PiperOrigin-RevId: 294308332
2020-02-10Clean-up comments in runsc/BUILD and CONTRIBUTING.md.Adin Scannell
PiperOrigin-RevId: 294300437
2020-02-10Add context to note.Adin Scannell
PiperOrigin-RevId: 294300040
2020-02-10Add flag package to limit visibility.Adin Scannell
PiperOrigin-RevId: 294297004
2020-02-10Add context to comments.Adin Scannell
PiperOrigin-RevId: 294295852
2020-02-10Add contextual comment.Adin Scannell
PiperOrigin-RevId: 294289066
2020-02-10Fix build_file in runtimes_tests.Brad Burlage
PiperOrigin-RevId: 294286242
2020-02-10Add contextual note.Adin Scannell
PiperOrigin-RevId: 294285723
2020-02-10Document MinimumTotalMemoryBytes.Adin Scannell
PiperOrigin-RevId: 294273559
2020-02-10Redirect FIXME to gvisor.devFabricio Voznika
PiperOrigin-RevId: 294272755
2020-02-10Move x86 state definition to its own file.Brad Burlage
PiperOrigin-RevId: 294271541
2020-02-10Update visibility.Adin Scannell
PiperOrigin-RevId: 294265019
2020-02-10iptables: add instructions for runsc building.Kevin Krakauer
The readme didn't mention that users need to: - `bazel build` when working on iptables tests - enable raw sockets in /etc/docker/daemon.json. PiperOrigin-RevId: 294260169
2020-02-10Merge pull request #1453 from xiaobo55x:cpuidgVisor bot
PiperOrigin-RevId: 294257911
2020-02-10Bump rules_go, gazelle, and go toolchain.Nicolas Lacasse
PiperOrigin-RevId: 294253155
2020-02-10Internal change.Zach Koopmans
PiperOrigin-RevId: 294250370
2020-02-10Fix wrong path for ruby benchmark.Zach Koopmans
PiperOrigin-RevId: 294224689
2020-02-10Enable pkg/cpuid support on arm64.Haibo Xu
Fixes #1255 Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I8614e6f3ee321c2989567e4e712aa8f28cc9db14
2020-02-07Support listxattr and removexattr syscalls.Dean Deng
Note that these are only implemented for tmpfs, and other impls will still return EOPNOTSUPP. PiperOrigin-RevId: 293899385
2020-02-07Log level, optname, optval and optlen in getsockopt/setsockopt in strace.Ian Gudger
Log 8, 16, and 32 int optvals and dump the memory of other sizes. Updates #1782 PiperOrigin-RevId: 293889388
2020-02-07Refactor syscall testsJay Zhuang
- Move shared helpers V4Multicast and V4Broadcast to socket_test_util - Add unnamed namespace so socket_ipv4_tcp_unbound_external_networking_test.cc and socket_ipv4_udp_unbound_external_networking_test.cc can be compiled together - Add test files to "exports_files" so they can be included by Fuchsia's syscall test setup PiperOrigin-RevId: 293880429
2020-02-06Send DAD event when DAD resolves immediatelyGhanan Gowripalan
Previously, a DAD event would not be sent if DAD was disabled. This allows integrators to do some work when an IPv6 address is bound to a NIC without special logic that checks if DAD is enabled. Without this change, integrators would need to check if a NIC has DAD enabled when an address is auto-generated. If DAD is enabled, it would need to delay the work until the DAD completion event; otherwise, it would need to do the work in the address auto-generated event handler. Test: stack_test.TestDADDisabled PiperOrigin-RevId: 293732914
2020-02-06Fix TestPauseResume in container test failed with connection refused.Ting-Yu Wang
Sometimes we get this error under TSAN: """ error getting process data from container: connecting to control server at PID XXXX: connection refused """ The theory is that the top "sleep 20" was too short for TSAN, and the container already exited, so we get connected refused. This commit changes the test to let container signaling it's running by touching a file repeatedly forever during the test. PiperOrigin-RevId: 293710957
2020-02-06Auto-generate link-local address as a SLAAC addressGhanan Gowripalan
Auto-generated link-local addresses should have the same lifecycle hooks as global SLAAC addresses. The Stack's NDP dispatcher should be notified when link-local addresses are auto-generated and invalidated. They should also be removed when a NIC is disabled (which will be supported in a later change). Tests: - stack_test.TestNICAutoGenAddrWithOpaque - stack_test.TestNICAutoGenAddr PiperOrigin-RevId: 293706760
2020-02-06Add logic to run from baked images.Zach Koopmans
Change adds the following: - logic to run from "baked images". See [GVISOR_DIR]/tools/images - installers which install modified files from a workspace. This allows users to run benchmarks while modifying runsc. - removes the --preemptible tag from built GCE instances. Preemptible instances are much more likely to be preempted on startup, which manifests for the user as a failed benchmark. I don't currently have a way to detect if a VM has been preempted that will work for this change. https://cloud.google.com/compute/docs/instances/preemptible#preemption_process https://cloud.google.com/compute/docs/instances/preemptible#preemption_selection PiperOrigin-RevId: 293697949
2020-02-06Perform DAD on IPv6 addresses when enabling a NICGhanan Gowripalan
Addresses may be added before a NIC is enabled. Make sure DAD is performed on the permanent IPv6 addresses when they get enabled. Test: - stack_test.TestDoDADWhenNICEnabled - stack.TestDisabledRxStatsWhenNICDisabled PiperOrigin-RevId: 293697429
2020-02-06Fix `bazel run` target in docs.Kevin Krakauer
PiperOrigin-RevId: 293676954
2020-02-06Make gonet consistent both internally and with the net package.Ian Gudger
The types gonet.Conn and gonet.PacketConn were confusingly named as both implemented net.Conn. Further, gonet.Conn was perhaps unexpectedly TCP-specific (net.Conn is not). This change renames them to gonet.TCPConn and gonet.UDPConn. Renames gonet.NewListener to gonet.ListenTCP and adds a new gonet.NewTCPListner function to be consistent with both the gonet.DialXxx and gonet.NewXxxConn functions as well as net.ListenTCP. Updates #1632 PiperOrigin-RevId: 293671303
2020-02-06runsc/container_test: hide host /etc in test containersAndrei Vagin
The host /etc can contain config files which affect tests. For example, bash reads /etc/passwd and if it is too big a test can fail by timeout. PiperOrigin-RevId: 293670637
2020-02-06Update link address for targets of Neighbor AdvertsGhanan Gowripalan
Get the link address for the target of an NDP Neighbor Advertisement from the NDP Target Link Layer Address option. Tests: - ipv6.TestNeighorAdvertisementWithTargetLinkLayerOption - ipv6.TestNeighorAdvertisementWithInvalidTargetLinkLayerOption PiperOrigin-RevId: 293632609
2020-02-06Fix test case on AMD.Adin Scannell
When ignored, the trap should be executed which generates a SIGSEGV as in the above case. PiperOrigin-RevId: 293618489
2020-02-06Move p9.pool to a separate packageAndrei Vagin
PiperOrigin-RevId: 293617493
2020-02-05Add notes to relevant tests.Adin Scannell
These were out-of-band notes that can help provide additional context and simplify automated imports. PiperOrigin-RevId: 293525915
2020-02-05recv() on a closed TCP socket returns ENOTCONNEyal Soha
From RFC 793 s3.9 p58 Event Processing: If RECEIVE Call arrives in CLOSED state and the user has access to such a connection, the return should be "error: connection does not exist" Fixes #1598 PiperOrigin-RevId: 293494287
2020-02-05Fix undeclared variable error in common_build.sh.Brad Burlage
PiperOrigin-RevId: 293413711
2020-02-05Disable get/set xattrs until list/remove exist too.Nicolas Lacasse
PiperOrigin-RevId: 293411655
2020-02-05Add packetdrill tests to presubmit and CI testingEyal Soha
PiperOrigin-RevId: 293409718
2020-02-04Support RTM_NEWADDR and RTM_GETLINK in (rt)netlink.Ting-Yu Wang
PiperOrigin-RevId: 293271055
2020-02-04Merge pull request #1683 from kevinGC:ipt-udp-matchersgVisor bot
PiperOrigin-RevId: 293243342
2020-02-04Add socket connection stress test.Ian Gudger
Tests 65k connection attempts on common types of sockets to check for port leaks. Also fixes a bug where dual-stack sockets wouldn't properly re-queue segments received while closing. PiperOrigin-RevId: 293241166
2020-02-04Increase container_test size.Kevin Krakauer
container_test was flaking because a small percentage of runs timed out. Tested this fix with --runs_per_test=100. PiperOrigin-RevId: 293240102
2020-02-04Automatically propagate tags for stateify and marshal.Adin Scannell
Note that files will need to be appropriately segmented in order for the mechanism to work, in suffixes implying special tags. This only needs to happen for cases where marshal or state structures are defined, which should be rare and mostly architecture specific. PiperOrigin-RevId: 293231579
2020-02-04Allow mlock in fsgofer system call filtersFabricio Voznika
Go 1.14 has a workaround for a Linux 5.2-5.4 bug which requires mlock'ing the g stack to prevent register corruption. We need to allow this syscall until it is removed from Go. PiperOrigin-RevId: 293212935
2020-02-04timer_create(2) should return 0 on successMichael Pratt
The timer ID is copied out to the argument. Fixes #1738 PiperOrigin-RevId: 293210801
2020-02-04Include socket_ip_udp_loopback.cc in exportes_filesJay Zhuang
So it can be included in fuchsia's syscall tests PiperOrigin-RevId: 293208306
2020-02-04Fix safecopy test.Adin Scannell
This is failing in Go1.14 due to new checkptr constraints. This version should avoid hitting this constraints by doing "dangerous" pointer math less dangerously? PiperOrigin-RevId: 293205764
2020-02-04Remove argument from vfs.MountNamespace.DecRef()Fabricio Voznika
Updates #1035 PiperOrigin-RevId: 293194631
2020-02-04VFS2 gofer clientJamie Liu
Updates #1198 Opening host pipes (by spinning in fdpipe) and host sockets is not yet complete, and will be done in a future CL. Major differences from VFS1 gofer client (sentry/fs/gofer), with varying levels of backportability: - "Cache policies" are replaced by InteropMode, which control the behavior of timestamps in addition to caching. Under InteropModeExclusive (analogous to cacheAll) and InteropModeWritethrough (analogous to cacheAllWritethrough), client timestamps are *not* written back to the server (it is not possible in 9P or Linux for clients to set ctime, so writing back client-authoritative timestamps results in incoherence between atime/mtime and ctime). Under InteropModeShared (analogous to cacheRemoteRevalidating), client timestamps are not used at all (remote filesystem clocks are authoritative). cacheNone is translated to InteropModeShared + new option filesystemOptions.specialRegularFiles. - Under InteropModeShared, "unstable attribute" reloading for permission checks, lookup, and revalidation are fused, which is feasible in VFS2 since gofer.filesystem controls path resolution. This results in a ~33% reduction in RPCs for filesystem operations compared to cacheRemoteRevalidating. For example, consider stat("/foo/bar/baz") where "/foo/bar/baz" fails revalidation, resulting in the instantiation of a new dentry: VFS1 RPCs: getattr("/") // fs.MountNamespace.FindLink() => fs.Inode.CheckPermission() => gofer.inodeOperations.check() => gofer.inodeOperations.UnstableAttr() walkgetattr("/", "foo") = fid1 // fs.Dirent.walk() => gofer.session.Revalidate() => gofer.cachePolicy.Revalidate() clunk(fid1) getattr("/foo") // CheckPermission walkgetattr("/foo", "bar") = fid2 // Revalidate clunk(fid2) getattr("/foo/bar") // CheckPermission walkgetattr("/foo/bar", "baz") = fid3 // Revalidate clunk(fid3) walkgetattr("/foo/bar", "baz") = fid4 // fs.Dirent.walk() => gofer.inodeOperations.Lookup getattr("/foo/bar/baz") // linux.stat() => gofer.inodeOperations.UnstableAttr() VFS2 RPCs: getattr("/") // gofer.filesystem.walkExistingLocked() walkgetattr("/", "foo") = fid1 // gofer.filesystem.stepExistingLocked() clunk(fid1) // No getattr: walkgetattr already updated metadata for permission check walkgetattr("/foo", "bar") = fid2 clunk(fid2) walkgetattr("/foo/bar", "baz") = fid3 // No clunk: fid3 used for new gofer.dentry // No getattr: walkgetattr already updated metadata for stat() - gofer.filesystem.unlinkAt() does not require instantiation of a dentry that represents the file to be deleted. Updates #898. - gofer.regularFileFD.OnClose() skips Tflushf for regular files under InteropModeExclusive, as it's nonsensical to request a remote file flush without flushing locally-buffered writes to that remote file first. - Symlink targets are cached when InteropModeShared is not in effect. - p9.QID.Path (which is already required to be unique for each file within a server, and is accordingly already synthesized from device/inode numbers in all known gofers) is used as-is for inode numbers, rather than being mapped along with attr.RDev in the client to yet another synthetic inode number. - Relevant parts of fsutil.CachingInodeOperations are inlined directly into gofer package code. This avoids having to duplicate part of its functionality in fsutil.HostMappable. PiperOrigin-RevId: 293190213
2020-02-04Add support for sentry internal pipe for gofer mountsFabricio Voznika
Internal pipes are supported similarly to how internal UDS is done. It is also controlled by the same flag. Fixes #1102 PiperOrigin-RevId: 293150045
2020-02-03seccomp: allow to filter syscalls by instruction pointerAndrei Vagin
PiperOrigin-RevId: 293029446
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