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2020-04-24Merge release-20200323.0-237-g1ceee04 (automated)gVisor bot
2020-04-24Do not copy tcpip.CancellableTimerGhanan Gowripalan
A CancellableTimer's AfterFunc timer instance creates a closure over the CancellableTimer's address. This closure makes a CancellableTimer unsafe to copy. No behaviour change, existing tests pass. PiperOrigin-RevId: 308306664
2020-04-24Merge release-20200323.0-236-g632b104 (automated)gVisor bot
2020-04-24Plumb context.Context into kernfs.Inode.Open().Dean Deng
PiperOrigin-RevId: 308304793
2020-04-24Merge release-20200323.0-235-g2cc0fd4 (automated)gVisor bot
2020-04-24Fixes for procfsFabricio Voznika
- Return ENOENT for /proc/[pid]/task if task is zoombied or terminated - Allow directory to be Seek() to the end - Construct synthetic files for /proc/[pid]/ns/* - Changed GenericDirectoryFD.Init to not register with FileDescription, otherwise other implementation cannot change behavior. Updates #1195,1193 PiperOrigin-RevId: 308294649
2020-04-24Merge release-20200323.0-234-g1b88c63 (automated)gVisor bot
2020-04-24Move hostfs mount to Kernel struct.Dean Deng
This is needed to set up host fds passed through a Unix socket. Note that the host package depends on kernel, so we cannot set up the hostfs mount directly in Kernel.Init as we do for sockfs and pipefs. Also, adjust sockfs to make its setup look more like hostfs's and pipefs's. PiperOrigin-RevId: 308274053
2020-04-24Merge release-20200323.0-233-g40a712c (automated)gVisor bot
2020-04-24Refactor syscall.Fstat calls in hostfs.Dean Deng
Just call syscall.Fstat directly each time mode/file owner are needed. This feels more natural than using i.getPermissions(). PiperOrigin-RevId: 308257405
2020-04-24Merge release-20200323.0-229-gf01f213 (automated)gVisor bot
2020-04-23Enable automated marshalling for mempolicy syscalls.Rahat Mahmood
PiperOrigin-RevId: 308170679
2020-04-24Merge release-20200323.0-228-g696feaf (automated)gVisor bot
2020-04-23Port devpts to VFS2.Nicolas Lacasse
PiperOrigin-RevId: 308164359
2020-04-24Merge release-20200323.0-227-geccae0f (automated)gVisor bot
2020-04-23Remove View.First() and View.RemoveFirst()Kevin Krakauer
These methods let users eaily break the VectorisedView abstraction, and allowed netstack to slip into pseudo-enforcement of the "all headers are in the first View" invariant. Removing them and replacing with PullUp(n) breaks this reliance and will make it easier to add iptables support and rework network buffer management. The new View.PullUp(n) method is low cost in the common case, when when all the headers fit in the first View. PiperOrigin-RevId: 308163542
2020-04-23Merge release-20200323.0-226-g93dd471 (automated)gVisor bot
2020-04-23Enable automated marshalling for epoll events.Rahat Mahmood
Ensure we use the correct architecture-specific defintion of epoll event, and use go-marshal for serialization. PiperOrigin-RevId: 308145677
2020-04-23Merge release-20200323.0-225-g5042ea7 (automated)gVisor bot
2020-04-23Add vfs.MkdirOptions.ForSyntheticMountpoint.Jamie Liu
PiperOrigin-RevId: 308143529
2020-04-23Merge release-20200323.0-222-gded5c96 (automated)gVisor bot
2020-04-23Merge pull request #1819 from lubinszARM:pr_signal_2gVisor bot
PiperOrigin-RevId: 308100771
2020-04-23Simplify Docker test infrastructure.Adin Scannell
This change adds a layer of abstraction around the internal Docker APIs, and eliminates all direct dependencies on Dockerfiles in the infrastructure. A subsequent change will automated the generation of local images (with efficient caching). Note that this change drops the use of bazel container rules, as that experiment does not seem to be viable. PiperOrigin-RevId: 308095430
2020-04-23Merge release-20200323.0-219-ge0c6701 (automated)gVisor bot
2020-04-23Factor fsimpl/gofer.host{Preadv,Pwritev} out of fsimpl/gofer.Jamie Liu
Also fix returning EOF when 0 bytes are read. PiperOrigin-RevId: 308089875
2020-04-23Merge release-20200323.0-216-ge69a871 (automated)gVisor bot
2020-04-22Move user home detection to its own library.Nicolas Lacasse
PiperOrigin-RevId: 307977689
2020-04-23Merge release-20200323.0-215-g0c58694 (automated)gVisor bot
2020-04-22Specify a memory file in platform.New().Andrei Vagin
PiperOrigin-RevId: 307941984
2020-04-22Merge release-20200323.0-214-g37f863f (automated)gVisor bot
2020-04-22tcp: handle listen after shutdown properlyAndrei Vagin
Right now, sentry panics in this case: panic: close of nil channel goroutine 67 [running]: pkg/tcpip/transport/tcp/tcp.(*endpoint).listen(0xc0000ce000, 0x9, 0x0) pkg/tcpip/transport/tcp/endpoint.go:2208 +0x170 pkg/tcpip/transport/tcp/tcp.(*endpoint).Listen(0xc0000ce000, 0x9, 0xc0003a1ad0) pkg/tcpip/transport/tcp/endpoint.go:2179 +0x50 Fixes #2468 PiperOrigin-RevId: 307896725
2020-04-22Merge release-20200323.0-210-g5e3596a (automated)gVisor bot
2020-04-21Fix set/getsockopt in vfs2 override.Dean Deng
Updates #1476. PiperOrigin-RevId: 307726055
2020-04-22Merge release-20200323.0-209-g80d0a95 (automated)gVisor bot
2020-04-21Update gofer.filesystem.BoundEndpointAt() to allow path resolution.Dean Deng
Even though BoundEndpointAt is not yet implemented for gofer fs, allow path resolution errors to be returned so that we can jump to tmpfs, where it is implemented. Updates #1476. PiperOrigin-RevId: 307718335
2020-04-21Merge release-20200323.0-207-g37e01fd (automated)gVisor bot
2020-04-21Misc VFS2 fixesFabricio Voznika
- Fix defer operation ordering in kernfs.Filesystem.AccessAt() - Add AT_NULL entry in proc/pid/auvx - Fix line padding in /proc/pid/maps - Fix linux_dirent serialization for getdents(2) - Remove file creation flags from vfs.FileDescription.statusFlags() Updates #1193, #1035 PiperOrigin-RevId: 307704159
2020-04-21Merge release-20200323.0-206-geba0866 (automated)gVisor bot
2020-04-21Merge pull request #1818 from lubinszARM:pr_signal_1gVisor bot
PiperOrigin-RevId: 307680200
2020-04-21Merge release-20200323.0-203-g9b5e305 (automated)gVisor bot
2020-04-21Remove filesystem structure from vfs.Dentry.Jamie Liu
This change: - Drastically simplifies the synchronization model: filesystem structure is both implementation-defined and implementation-synchronized. - Allows implementations of vfs.DentryImpl to use implementation-specific dentry types, reducing casts during path traversal. - Doesn't require dentries representing non-directory files to waste space on a map of children. - Allows dentry revalidation and mount lookup to be correctly ordered (fixed FIXME in fsimpl/gofer/filesystem.go). - Removes the need to have two separate maps in gofer.dentry (dentry.vfsd.children and dentry.negativeChildren) for positive and negative lookups respectively. //pkg/sentry/fsimpl/tmpfs/benchmark_test.go: name old time/op new time/op delta VFS2TmpfsStat/1-112 172ns ± 4% 165ns ± 3% -4.08% (p=0.002 n=9+9) VFS2TmpfsStat/2-112 199ns ± 3% 195ns ±10% ~ (p=0.132 n=8+9) VFS2TmpfsStat/3-112 230ns ± 2% 216ns ± 2% -6.15% (p=0.000 n=8+8) VFS2TmpfsStat/8-112 390ns ± 2% 358ns ± 4% -8.33% (p=0.000 n=9+8) VFS2TmpfsStat/64-112 2.20µs ± 3% 2.01µs ± 3% -8.48% (p=0.000 n=10+8) VFS2TmpfsStat/100-112 3.42µs ± 9% 3.08µs ± 2% -9.82% (p=0.000 n=9+8) VFS2TmpfsMountStat/1-112 278ns ± 1% 286ns ±15% ~ (p=0.712 n=8+10) VFS2TmpfsMountStat/2-112 311ns ± 4% 298ns ± 2% -4.27% (p=0.000 n=9+8) VFS2TmpfsMountStat/3-112 339ns ± 3% 330ns ± 9% ~ (p=0.070 n=8+9) VFS2TmpfsMountStat/8-112 503ns ± 3% 466ns ± 3% -7.38% (p=0.000 n=8+8) VFS2TmpfsMountStat/64-112 2.53µs ±16% 2.17µs ± 7% -14.19% (p=0.000 n=10+9) VFS2TmpfsMountStat/100-112 3.60µs ± 4% 3.30µs ± 8% -8.33% (p=0.001 n=8+9) Updates #1035 PiperOrigin-RevId: 307655892
2020-04-21Merge release-20200323.0-201-g8b72623 (automated)gVisor bot
2020-04-21Sentry metrics updates.Dave Bailey
Sentry metrics with nanoseconds units are labeled as such, and non-cumulative sentry metrics are supported. PiperOrigin-RevId: 307621080
2020-04-21Merge release-20200323.0-199-g120d3b5 (automated)gVisor bot
2020-04-21Automated rollback of changelist 307477185gVisor bot
PiperOrigin-RevId: 307598974
2020-04-21Merge release-20200323.0-198-gc615aaf (automated)gVisor bot
2020-04-20Add internal nogo analysis & checkescape tool.Adin Scannell
See tools/nogo/README.md. The checkescape tool is able to perform recursive escape analysis, using the actual generated binary to confirm the results produced by the compiler itself. As an initial use case, this replaces the manual escape analysis tests used for go_marshal, and validates that the CopyIn and CopyOut paths will not require any allocation or stack splits. Updates #2243 PiperOrigin-RevId: 307532986
2020-04-20Merge release-20200323.0-197-g7820415 (automated)gVisor bot
2020-04-20Prevent race when reassigning CancellableTimerGhanan Gowripalan
Capture a timer's locker for each instance of a CancellableTimer so that reassigning a tcpip.CancellableTimer does not cause a data race. Reassigning a tcpip.CancellableTimer updates its underlying locker. When a timer fires, it does a read of the timer's locker variable to lock it. This read of the locker was not synchronized so a race existed where one goroutine may reassign the timer (updating the locker) and another handles the timer firing (attempts to lock the timer's locker). Test: tcpip_test.TestCancellableTimerReassignment PiperOrigin-RevId: 307499822
2020-04-20Merge release-20200323.0-195-g07b1b4c (automated)gVisor bot
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