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2020-09-24Add basic stateify annotations.Adin Scannell
Updates #1663 PiperOrigin-RevId: 333539293
2020-09-24Change segment/pending queue to use receive buffer limits.Bhasker Hariharan
segment_queue today has its own standalone limit of MaxUnprocessedSegments but this can be a problem in UnlockUser() we do not release the lock till there are segments to be processed. What can happen is as handleSegments dequeues packets more keep getting queued and we will never release the lock. This can keep happening even if the receive buffer is full because nothing can read() till we release the lock. Further having a separate limit for pending segments makes it harder to track memory usage etc. Unifying the limits makes it easier to reason about memory in use and makes the overall buffer behaviour more consistent. PiperOrigin-RevId: 333508122
2020-09-24test/syscall/mknod: Don't use a hard-coded file nameAndrei Vagin
PiperOrigin-RevId: 333461380
2020-09-23Merge pull request #4071 from avagin:travisgVisor bot
PiperOrigin-RevId: 333454489
2020-09-23fuse: don't call dentry.InsertChildAndrei Vagin
It is called from the kernfs code (OpenAt and revalidateChildLocked()). For RemoveChildLocked, it is opposed. We need to call it from fuse.RmDir and fuse.Unlink. PiperOrigin-RevId: 333453218
2020-09-23Clean up inotify tests.Dean Deng
Mostly simplifies SKIP_IF statements and adds some more documentation. Also, mknod is now supported by gofer fs, so remove SKIP_IFs related to this. PiperOrigin-RevId: 333449932
2020-09-23Add more descriptive comments on mount options.Dean Deng
PiperOrigin-RevId: 333447255
2020-09-23make: specify /dev/null for the tail toolAndrei Vagin
2020-09-23[vfs] kernfs: Enable leak checking consistently.Ayush Ranjan
There were some instances where we were not enabling leak checking. PiperOrigin-RevId: 333418571
2020-09-23Let underlying fs handle LockFD in verity fsChong Cai
PiperOrigin-RevId: 333412836
2020-09-23Remove unused scripts.Ayush Ranjan
PiperOrigin-RevId: 333408633
2020-09-23Remove unused field from neighborEntryGhanan Gowripalan
PiperOrigin-RevId: 333405169
2020-09-23Set verity underlying fs mount as internalChong Cai
PiperOrigin-RevId: 333404727
2020-09-23Clean up flag.* usage in packetimpact's runner.RegisterFlagsZeling Feng
PiperOrigin-RevId: 333400865
2020-09-23Internal change.gVisor bot
PiperOrigin-RevId: 333287864
2020-09-23Extract ICMP error sender from UDPJulian Elischer
Store transport protocol number on packet buffers for use in ICMP error generation. Updates #2211. PiperOrigin-RevId: 333252762
2020-09-22Handle EOF properly in splice/sendfile.Dean Deng
Use HandleIOErrorVFS2 instead of custom error handling. PiperOrigin-RevId: 333227581
2020-09-22pkg/buffer: Reorganize internal structure to allow dynamic sizes.Ting-Yu Wang
This change changes `buffer.data` into a `[]byte`, from `[bufferSize]byte`. In exchange, each `buffer` is now grouped together to reduce the number of allocation. Plus, `View` now holds an embeded list of `buffer` (via `pool`) to support the happy path which the number of buffer is small. Expect no extra allocation for the happy path. It is to enable the use case for PacketBuffer, which * each `View` is small (way less than `defaultBufferSize`), and * needs to dynamically transfer ownership of `[]byte` to `View`. (to allow gradual migration) PiperOrigin-RevId: 333197252
2020-09-22Refactor testutil.TestEndpoint and use it instead of limitedEPArthur Sfez
The new testutil.MockLinkEndpoint implementation is not composed by channel.Channel anymore because none of its features were used. PiperOrigin-RevId: 333167753
2020-09-22[vfs] [1/2] kernfs: Internally use kernfs.Dentry instead of vfs.Dentry.Ayush Ranjan
Update signatures for: - walkExistingLocked - checkDeleteLocked - Inode.Open Updates #1193 PiperOrigin-RevId: 333163381
2020-09-22Fix panic in `runsc flags`Fabricio Voznika
When printing flags, FlagSet.PrintDefaults compares the Zero value to the flag default value. The Zero refs.LeakMode value was panicking in String() because it didn't expect the default to be used Closes #4023 PiperOrigin-RevId: 333150836
2020-09-22Move stack.fakeClock into a separate packageToshi Kikuchi
PiperOrigin-RevId: 333138701
2020-09-22Allow CLONE_SETTLS for Go 1.16Michael Pratt
https://go.googlesource.com/go/+/0941fc3 switches the Go runtime (on amd64) from using arch_prctl(ARCH_SET_FS) to CLONE_SETTLS to set the TLS. PiperOrigin-RevId: 333100550
2020-09-22Force clone parent_tidptr and child_tidptr to zeroMichael Pratt
Neither CLONE_PARENT_SETTID nor CLONE_CHILD_SETTID are used, so these arguments will always be NULL. PiperOrigin-RevId: 333085326
2020-09-21Allow partial writes for gofer.specialFileFD.Dean Deng
Originally, we avoided partial writes in case it caused us to write a partial packet to a socket-backed specialFileFD. However, this check causes splicing from a pipe to specialFileFD to fail if we hit EOF on the pipe. PiperOrigin-RevId: 333016216
2020-09-21Receive ACK when deleting address in syscall testsGhanan Gowripalan
PiperOrigin-RevId: 332961666
2020-09-21Point blog to install guideFabricio Voznika
It containes full instructions to download and install runsc with Docker now. PiperOrigin-RevId: 332960337
2020-09-21Fix socket_ipv4_udp_unbound_test_native in opensource.Zach Koopmans
Calls to recv sometimes fail with EAGAIN, so call select beforehand. PiperOrigin-RevId: 332943156
2020-09-21Use kernfs.Dentry for kernfs.Lookup.Dean Deng
Updates #1193. PiperOrigin-RevId: 332939026
2020-09-21Fix proc_net_test_native for native tests.Zach Koopmans
"DefaultValueEqZero" is only valid if the test is in a sandbox. Our CI VMs often have "/proc/sys/net/ipv4/ip_forward" set to 1. PiperOrigin-RevId: 332910859
2020-09-21Add ftruncate test for writeable fd but no write permissions.Dean Deng
PiperOrigin-RevId: 332907453
2020-09-21Port fuse tests to Makefile.Ayush Ranjan
PiperOrigin-RevId: 332878900
2020-09-21Fix flakes in UdpSocketTestZach Koopmans
`recv` calls with MSG_DONTWAIT can fail with EAGAIN randomly in tests. Fix this by calling `select` on sockets with a timeout prior to attempting a `recv`. PiperOrigin-RevId: 332873735
2020-09-20Merge pull request #3651 from ianlewis:ip-forwardinggVisor bot
PiperOrigin-RevId: 332760843
2020-09-18Disable vdso_clock_gettime on KVM.Jamie Liu
Unfortunately, I think TSC misalignment means that we can't really expect any consistent correspondence between a TSC-based VDSO and the sentry's view of time on the KVM platform. PiperOrigin-RevId: 332576147
2020-09-18Merge pull request #3989 from jinmouil:feature/fuse-fixgVisor bot
PiperOrigin-RevId: 332548335
2020-09-18Deflake stat_test with save/restore enabled.Nicolas Lacasse
PiperOrigin-RevId: 332546659
2020-09-18Implement fsimpl/overlay.filesystem.RenameAt.Jamie Liu
Updates #1199 PiperOrigin-RevId: 332539197
2020-09-18Disable PHP test ext/standard/tests/streams/proc_open_bug60120.phpt.Jamie Liu
PiperOrigin-RevId: 332521647
2020-09-18Use a tmpfs file for shared anonymous and /dev/zero mmap on VFS2.Jamie Liu
This is more consistent with Linux (see comment on MM.NewSharedAnonMappable()). We don't do the same thing on VFS1 for reasons documented by the updated comment. PiperOrigin-RevId: 332514849
2020-09-18fuse: update design doc with I/O implementationJinmou Li
2020-09-18Remove SKIP_IF for now-supported features.Kevin Krakauer
Updates #3549. PiperOrigin-RevId: 332501660
2020-09-18Reduce the number of steps to get started with gVisorFabricio Voznika
Streamline instruction for the common case. PiperOrigin-RevId: 332488910
2020-09-18Count packets dropped by iptables in IPStatsKevin Krakauer
PiperOrigin-RevId: 332486383
2020-09-18Merge pull request #3972 from btw616:fix/commentsgVisor bot
PiperOrigin-RevId: 332486111
2020-09-18Enqueue TCP sends arriving in SYN_SENT state.Mithun Iyer
TCP needs to enqueue any send requests arriving when the connection is in SYN_SENT state. The data should be sent out soon after completion of the connection handshake. Fixes #3995 PiperOrigin-RevId: 332482041
2020-09-18Add "Containing a Real Vulnerability" blog postFabricio Voznika
PiperOrigin-RevId: 332477119
2020-09-18Fix definition of SchedParam.Rahat Mahmood
Linux defines this struct as: struct sched_param { int priority; } ... in include/linux/sched.h. PiperOrigin-RevId: 332473133
2020-09-18Drop ARCH_GET_FSMichael Pratt
Go does not call arch_prctl(ARCH_GET_FS), nor am I sure it ever did. Drop the filter. PiperOrigin-RevId: 332470532
2020-09-18Use common parsing utilities when sniffingGhanan Gowripalan
Extract parsing utilities so they can be used by the sniffer. Fixes #3930 PiperOrigin-RevId: 332401880
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