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2019-05-02runsc: don't create an empty network namespace if NetworkHost is setAndrei Vagin
With this change, we will be able to run runsc do in a host network namespace. PiperOrigin-RevId: 246436660 Change-Id: I8ea18b1053c88fe2feed74239b915fe7a151ce34
2019-05-02runsc: move test_app in a separate directoryAndrei Vagin
Opensource tools (e. g. https://github.com/fatih/vim-go) can't hanlde more than one golang package in one directory. PiperOrigin-RevId: 246435962 Change-Id: I67487915e3838762424b2d168efc54ae34fb801f
2019-05-02Add [simple] network support to 'runsc do'Fabricio Voznika
Sandbox always runsc with IP 192.168.10.2 and the peer network adds 1 to the address (192.168.10.3). Sandbox IP can be changed using --ip flag. Here a few examples: sudo runsc do curl www.google.com sudo runsc do --ip=10.10.10.2 bash -c "echo 123 | netcat -l -p 8080" PiperOrigin-RevId: 246421277 Change-Id: I7b3dce4af46a57300350dab41cb27e04e4b6e9da
2019-04-30Implement async MemoryFile eviction, and use it in CachingInodeOperations.Jamie Liu
This feature allows MemoryFile to delay eviction of "optional" allocations, such as unused cached file pages. Note that this incidentally makes CachingInodeOperations writeback asynchronous, in the sense that it doesn't occur until eviction; this is necessary because between when a cached page becomes evictable and when it's evicted, file writes (via CachingInodeOperations.Write) may dirty the page. As currently implemented, this feature won't meaningfully impact steady-state memory usage or caching; the reclaimer goroutine will schedule eviction as soon as it runs out of other work to do. Future CLs increase caching by adding constraints on when eviction is scheduled. PiperOrigin-RevId: 246014822 Change-Id: Ia85feb25a2de92a48359eb84434b6ec6f9bea2cb
2019-04-29Change copyright notice to "The gVisor Authors"Michael Pratt
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
2019-04-29Allow and document bug ids in gVisor codebase.Nicolas Lacasse
PiperOrigin-RevId: 245818639 Change-Id: I03703ef0fb9b6675955637b9fe2776204c545789
2019-04-26Make raw sockets a toggleable feature disabled by default.Kevin Krakauer
PiperOrigin-RevId: 245511019 Change-Id: Ia9562a301b46458988a6a1f0bbd5f07cbfcb0615
2019-04-26Bump the AF_PACKET socket rcv buf size to 4MB by default.Bhasker Hariharan
Packet socket receive buffers default to the sysctl value of net.core.rmem_default and are capped by net.core.rmem_max both which are usually set to 208KB on most systems. Since we can't expect every gVisor user to bump these we use SO_RCVBUFFORCE to exceed the limit. This is possible as runsc runs with CAP_NET_ADMIN outside the sandbox and can do this before the FD is passed to the sentry inside the sandbox. Updates #211 iperf output w/ 4MB buffer. iperf3 -c 172.17.0.2 -t 100 Connecting to host 172.17.0.2, port 5201 [ 4] local 172.17.0.1 port 40378 connected to 172.17.0.2 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 1.15 GBytes 9.89 Gbits/sec 0 1.02 MBytes [ 4] 1.00-2.00 sec 1.18 GBytes 10.2 Gbits/sec 0 1.02 MBytes [ 4] 2.00-3.00 sec 965 MBytes 8.09 Gbits/sec 0 1.02 MBytes [ 4] 3.00-4.00 sec 942 MBytes 7.90 Gbits/sec 0 1.02 MBytes [ 4] 4.00-5.00 sec 952 MBytes 7.99 Gbits/sec 0 1.02 MBytes [ 4] 5.00-6.00 sec 1.14 GBytes 9.81 Gbits/sec 0 1.02 MBytes [ 4] 6.00-7.00 sec 1.13 GBytes 9.68 Gbits/sec 0 1.02 MBytes [ 4] 7.00-8.00 sec 930 MBytes 7.80 Gbits/sec 0 1.02 MBytes [ 4] 8.00-9.00 sec 1.15 GBytes 9.91 Gbits/sec 0 1.02 MBytes [ 4] 9.00-10.00 sec 938 MBytes 7.87 Gbits/sec 0 1.02 MBytes [ 4] 10.00-11.00 sec 737 MBytes 6.18 Gbits/sec 0 1.02 MBytes [ 4] 11.00-12.00 sec 1.16 GBytes 9.93 Gbits/sec 0 1.02 MBytes [ 4] 12.00-13.00 sec 917 MBytes 7.69 Gbits/sec 0 1.02 MBytes [ 4] 13.00-14.00 sec 1.19 GBytes 10.2 Gbits/sec 0 1.02 MBytes [ 4] 14.00-15.00 sec 1.01 GBytes 8.70 Gbits/sec 0 1.02 MBytes [ 4] 15.00-16.00 sec 1.20 GBytes 10.3 Gbits/sec 0 1.02 MBytes [ 4] 16.00-17.00 sec 1.14 GBytes 9.80 Gbits/sec 0 1.02 MBytes ^C[ 4] 17.00-17.60 sec 718 MBytes 10.1 Gbits/sec 0 1.02 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-17.60 sec 18.4 GBytes 8.98 Gbits/sec 0 sender [ 4] 0.00-17.60 sec 0.00 Bytes 0.00 bits/sec receiver PiperOrigin-RevId: 245470590 Change-Id: I1c08c5ee8345de6ac070513656a4703312dc3c00
2019-04-23Revert runsc to use RecvMMsg packet dispatcher.Bhasker Hariharan
PacketMMap mode has issues due to a kernel bug. This change reverts us to using recvmmsg instead of a shared ring buffer to dispatch inbound packets. This will reduce performance but should be more stable under heavy load till PacketMMap is updated to use TPacketv3. See #210 for details. Perf difference between recvmmsg vs packetmmap. RecvMMsg : iperf3 -c 172.17.0.2 Connecting to host 172.17.0.2, port 5201 [ 4] local 172.17.0.1 port 43478 connected to 172.17.0.2 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 778 MBytes 6.53 Gbits/sec 4349 188 KBytes [ 4] 1.00-2.00 sec 786 MBytes 6.59 Gbits/sec 4395 212 KBytes [ 4] 2.00-3.00 sec 756 MBytes 6.34 Gbits/sec 3655 161 KBytes [ 4] 3.00-4.00 sec 782 MBytes 6.56 Gbits/sec 4419 175 KBytes [ 4] 4.00-5.00 sec 755 MBytes 6.34 Gbits/sec 4317 187 KBytes [ 4] 5.00-6.00 sec 774 MBytes 6.49 Gbits/sec 4002 173 KBytes [ 4] 6.00-7.00 sec 737 MBytes 6.18 Gbits/sec 3904 191 KBytes [ 4] 7.00-8.00 sec 530 MBytes 4.44 Gbits/sec 3318 189 KBytes [ 4] 8.00-9.00 sec 487 MBytes 4.09 Gbits/sec 2627 188 KBytes [ 4] 9.00-10.00 sec 770 MBytes 6.46 Gbits/sec 4221 170 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 6.99 GBytes 6.00 Gbits/sec 39207 sender [ 4] 0.00-10.00 sec 6.99 GBytes 6.00 Gbits/sec receiver iperf Done. PacketMMap: bhaskerh@gvisor-bench:~/tensorflow$ iperf3 -c 172.17.0.2 Connecting to host 172.17.0.2, port 5201 [ 4] local 172.17.0.1 port 43496 connected to 172.17.0.2 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 657 MBytes 5.51 Gbits/sec 0 1.01 MBytes [ 4] 1.00-2.00 sec 1021 MBytes 8.56 Gbits/sec 0 1.01 MBytes [ 4] 2.00-3.00 sec 1.21 GBytes 10.4 Gbits/sec 45 1.01 MBytes [ 4] 3.00-4.00 sec 1018 MBytes 8.54 Gbits/sec 15 1.01 MBytes [ 4] 4.00-5.00 sec 1.28 GBytes 11.0 Gbits/sec 45 1.01 MBytes [ 4] 5.00-6.00 sec 1.38 GBytes 11.9 Gbits/sec 0 1.01 MBytes [ 4] 6.00-7.00 sec 1.34 GBytes 11.5 Gbits/sec 45 856 KBytes [ 4] 7.00-8.00 sec 1.23 GBytes 10.5 Gbits/sec 0 901 KBytes [ 4] 8.00-9.00 sec 1010 MBytes 8.48 Gbits/sec 0 923 KBytes [ 4] 9.00-10.00 sec 1.39 GBytes 11.9 Gbits/sec 0 960 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 11.4 GBytes 9.83 Gbits/sec 150 sender [ 4] 0.00-10.00 sec 11.4 GBytes 9.83 Gbits/sec receiver Updates #210 PiperOrigin-RevId: 244968438 Change-Id: Id461b5cbff2dea6fa55cfc108ea246d8f83da20b
2019-04-23Remember file position during Readdir()Fabricio Voznika
The caller must call Readdir() at least twice to detect EOF. The old code was always restarting the directory search and then skipping elements already seen, effectively doubling the cost to read a directory. The code now remembers the last offset and doesn't reposition the cursor if next request comes at the same offset. PiperOrigin-RevId: 244957816 Change-Id: If21a8dc68b76614adbcf4301439adfda40f2643f
2019-04-23Replace os.File with fd.FD in fsgoferFabricio Voznika
os.NewFile() accounts for 38% of CPU time in localFile.Walk(). This change switchs to use fd.FD which is much cheaper to create. Now, fd.New() in localFile.Walk() accounts for only 4%. PiperOrigin-RevId: 244944983 Change-Id: Ic892df96cf2633e78ad379227a213cb93ee0ca46
2019-04-23Fix container_test flakes.Kevin Krakauer
Create, Start, and Destroy were racing to create and destroy the metadata directory of containers. This is a re-upload of https://gvisor-review.googlesource.com/c/gvisor/+/16260, but with the correct account. Change-Id: I16b7a9d0971f0df873e7f4145e6ac8f72730a4f1 PiperOrigin-RevId: 244892991
2019-04-17Use FD limit and file size limit from hostFabricio Voznika
FD limit and file size limit is read from the host, instead of using hard-coded defaults, given that they effect the sandbox process. Also limit the direct cache to use no more than half if the available FDs. PiperOrigin-RevId: 244050323 Change-Id: I787ad0fdf07c49d589e51aebfeae477324fe26e6
2019-04-17Return error from fdbased.NewFabricio Voznika
RELNOTES: n/a PiperOrigin-RevId: 244031742 Change-Id: Id0cdb73194018fb5979e67b58510ead19b5a2b81
2019-04-11Add 'runsc do' commandFabricio Voznika
It provides an easy way to run commands to quickly test gVisor. By default it maps the host root as the container root with a writable overlay on top (so the host root is not modified). Example: sudo runsc do ls -lh --color sudo runsc do ~/src/test/my-test.sh PiperOrigin-RevId: 243178711 Change-Id: I05f3d6ce253fe4b5f1362f4a07b5387f6ddb5dd9
2019-04-09runsc: set UID and GID if gofer is executed in a new user namespaceAndrei Vagin
Otherwise, we will not have capabilities in the user namespace. And this patch adds the noexec option for mounts. https://github.com/google/gvisor/issues/145 PiperOrigin-RevId: 242706519 Change-Id: I1b78b77d6969bd18038c71616e8eb7111b71207c
2019-04-09Add TCP checksum verification.Bhasker Hariharan
PiperOrigin-RevId: 242704699 Change-Id: I87db368ca343b3b4bf4f969b17d3aa4ce2f8bd4f
2019-04-04gvisor: Add support for the MS_NOEXEC mount optionAndrei Vagin
https://github.com/google/gvisor/issues/145 PiperOrigin-RevId: 242044115 Change-Id: I8f140fe05e32ecd438b6be218e224e4b7fe05878
2019-04-02Remove obsolete TODO.Kevin Krakauer
PiperOrigin-RevId: 241637164 Change-Id: I65476a739cf38f1818dc47f6ce60638dec8b77a8
2019-04-02Change bug number for duplicate bug.Kevin Krakauer
PiperOrigin-RevId: 241567897 Change-Id: I580eac04f52bb15f4aab7df9822c4aa92e743021
2019-04-01Automated rollback of changelist 240657604Fabricio Voznika
PiperOrigin-RevId: 241434161 Change-Id: I9ec734e50cef5b39203e8bf37de2d91d24943f1e
2019-04-01Add release hook and version flagAdin Scannell
PiperOrigin-RevId: 241421671 Change-Id: Ic0cebfe3efd458dc42c49f7f812c13318705199a
2019-04-01gofer: ignore unsupported filesLiu Hua
'ls' will hang if there is any FIFO in this path. So return EPERM if unsupported file occurs and add NONBLOCK flag when opening file to avoid blocking on FIFO read. Signed-off-by: Liu Hua <sdu.liu@huawei.com> Change-Id: I8b9a2a48322118d8ad531dd226395438123eb047 PiperOrigin-RevId: 241406726
2019-03-29gvisor/runsc: enable generic segmentation offload (GSO)Andrei Vagin
The linux packet socket can handle GSO packets, so we can segment packets to 64K instead of the MTU which is usually 1500. Here are numbers for the nginx-1m test: runsc: 579330.01 [Kbytes/sec] received runsc-gso: 1794121.66 [Kbytes/sec] received runc: 2122139.06 [Kbytes/sec] received and for tcp_benchmark: $ tcp_benchmark --duration 15 --ideal [ 4] 0.0-15.0 sec 86647 MBytes 48456 Mbits/sec $ tcp_benchmark --client --duration 15 --ideal [ 4] 0.0-15.0 sec 2173 MBytes 1214 Mbits/sec $ tcp_benchmark --client --duration 15 --ideal --gso 65536 [ 4] 0.0-15.0 sec 19357 MBytes 10825 Mbits/sec PiperOrigin-RevId: 241072403 Change-Id: I20b03063a1a6649362b43609cbbc9b59be06e6d5
2019-03-29Set container.CreatedAt in Create().Nicolas Lacasse
PiperOrigin-RevId: 241056805 Change-Id: I13ea8f5dbfb01ca02a3b0ab887b8c3bdf4d556a6
2019-03-28gofer: some fixs in setupRootFSLiu Hua
1.use root instead of spec.Root.path as mountpoint 2.put remount readonly logic ahead to avoid device busy errors Signed-off-by: Liu Hua <sdu.liu@huawei.com> Change-Id: I9222b4695f917136a97b0898ac6f75fcff296e5d PiperOrigin-RevId: 240818182
2019-03-27Automated rollback of changelist 240502097Fabricio Voznika
PiperOrigin-RevId: 240657604 Change-Id: Ida15dee83337867c560427eae0b4b9ce1051dbb8
2019-03-27gvisor/runsc: address typos from githubAndrei Vagin
Fixes: https://github.com/google/gvisor/issues/143 Fixes #143 PiperOrigin-RevId: 240600719 Change-Id: Id1731b9969f98e32e52e144a6643e12b0b70f168
2019-03-26Merge fsgofer 'controlFile' and 'openedFile'Fabricio Voznika
This reduces the number of FDs used for writable files. #149 PiperOrigin-RevId: 240502097 Change-Id: Ib44489f65bce23dd1a995f620d69e65dce003f7c
2019-03-20Fail in case mount option is unknownFabricio Voznika
PiperOrigin-RevId: 239425816 Change-Id: I3b1479c61b4222c3931a416c4efc909157044330
2019-03-19netstack: reduce MSS from SYN to account tcp optionsAndrei Vagin
See: https://tools.ietf.org/html/rfc6691#section-2 PiperOrigin-RevId: 239305632 Change-Id: Ie8eb912a43332e6490045dc95570709c5b81855e
2019-03-18Add support for mount propagationFabricio Voznika
Properly handle propagation options for root and mounts. Now usage of mount options shared, rshared, and noexec cause error to start. shared/ rshared breaks sandbox=>host isolation. slave however can be supported because changes propagate from host to sandbox. Root FS setup moved inside the gofer. Apart from simplifying the code, it keeps all mounts inside the namespace. And they are torn down when the namespace is destroyed (DestroyFS is no longer needed). PiperOrigin-RevId: 239037661 Change-Id: I8b5ee4d50da33c042ea34fa68e56514ebe20e6e0
2019-03-14Decouple filemem from platform and move it to pgalloc.MemoryFile.Jamie Liu
This is in preparation for improved page cache reclaim, which requires greater integration between the page cache and page allocator. PiperOrigin-RevId: 238444706 Change-Id: Id24141b3678d96c7d7dc24baddd9be555bffafe4
2019-03-13Allow filesystem.Mount to take an optional interface argument.Nicolas Lacasse
PiperOrigin-RevId: 238360231 Change-Id: I5eaf8d26f8892f77d71c7fbd6c5225ef471cedf1
2019-03-12Make HandleLocal apply to all non-loopback interfaces.Ian Gudger
HandleLocal is very similar conceptually to MULTICAST_LOOP, so we can unify the implementations. This has the benefit of making HandleLocal apply even when the fdbased link endpoint isn't in use. In addition, move looping logic to route creation so that it doesn't need to be run for each packet. This should improve performance. PiperOrigin-RevId: 238099480 Change-Id: I72839f16f25310471453bc9d3fb8544815b25c23
2019-03-11Add profiling commands to runscFabricio Voznika
Example: runsc debug --root=<dir> \ --profile-heap=/tmp/heap.prof \ --profile-cpu=/tmp/cpu.prod --profile-delay=30 \ <container ID> PiperOrigin-RevId: 237848456 Change-Id: Icff3f20c1b157a84d0922599eaea327320dad773
2019-03-08Implement IP_MULTICAST_LOOP.Ian Gudger
IP_MULTICAST_LOOP controls whether or not multicast packets sent on the default route are looped back. In order to implement this switch, support for sending and looping back multicast packets on the default route had to be implemented. For now we only support IPv4 multicast. PiperOrigin-RevId: 237534603 Change-Id: I490ac7ff8e8ebef417c7eb049a919c29d156ac1c
2019-03-05Priority-inheritance futex implementationFabricio Voznika
It is Implemented without the priority inheritance part given that gVisor defers scheduling decisions to Go runtime and doesn't have control over it. PiperOrigin-RevId: 236989545 Change-Id: I714c8ca0798743ecf3167b14ffeb5cd834302560
2019-03-05Add uncaught signal message to the user logFabricio Voznika
This help troubleshoot cases where the container is killed and the app logs don't show the reason. PiperOrigin-RevId: 236982883 Change-Id: I361892856a146cea5b04abaa3aedbf805e123724
2019-03-01Add semctl(GETPID) syscallFabricio Voznika
Also added unimplemented notification for semctl(2) commands. PiperOrigin-RevId: 236340672 Change-Id: I0795e3bd2e6d41d7936fabb731884df426a42478
2019-02-27Don't log twice to debug log when --log isn't setFabricio Voznika
PiperOrigin-RevId: 235940853 Change-Id: I9c5b4cf18b199fb74044a5edb131bfff59dec945
2019-02-25Fix cgroup when path is relativeFabricio Voznika
This can happen when 'docker run --cgroup-parent=' flag is set. PiperOrigin-RevId: 235645559 Change-Id: Ieea3ae66939abadab621053551bf7d62d412e7ee
2019-02-22Rename ping endpoints to icmp endpoints.Kevin Krakauer
PiperOrigin-RevId: 235248572 Change-Id: I5b0538b6feb365a98712c2a2d56d856fe80a8a09
2019-02-14Don't allow writing or reading to TTY unless process group is in foreground.Nicolas Lacasse
If a background process tries to read from a TTY, linux sends it a SIGTTIN unless the signal is blocked or ignored, or the process group is an orphan, in which case the syscall returns EIO. See drivers/tty/n_tty.c:n_tty_read()=>job_control(). If a background process tries to write a TTY, set the termios, or set the foreground process group, linux then sends a SIGTTOU. If the signal is ignored or blocked, linux allows the write. If the process group is an orphan, the syscall returns EIO. See drivers/tty/tty_io.c:tty_check_change(). PiperOrigin-RevId: 234044367 Change-Id: I009461352ac4f3f11c5d42c43ac36bb0caa580f9
2019-02-13Add support for using PACKET_RX_RING to receive packets.Bhasker Hariharan
PACKET_RX_RING allows the use of an mmapped buffer to receive packets from the kernel. This should cut down the number of host syscalls that need to be made to receive packets when the underlying fd is a socket of the AF_PACKET type. PiperOrigin-RevId: 233834998 Change-Id: I8060025c6ced206986e94cc46b8f382b81bfa47f
2019-02-01Factor the subtargets method into a helper method with tests.Nicolas Lacasse
PiperOrigin-RevId: 232047515 Change-Id: I00f036816e320356219be7b2f2e6d5fe57583a60
2019-01-31gvisor/gofer: Use pivot_root instead of chrootAndrei Vagin
PiperOrigin-RevId: 231864273 Change-Id: I8545b72b615f5c2945df374b801b80be64ec3e13
2019-01-31Remove license commentsMichael Pratt
Nothing reads them and they can simply get stale. Generated with: $ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD PiperOrigin-RevId: 231818945 Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
2019-01-31runsc: check whether a container is deleted or not before setupContainerFSAndrei Vagin
PiperOrigin-RevId: 231811387 Change-Id: Ib143fb9a4d0fa1f105d1a3a3bd533dfc44e792af
2019-01-29runsc: reap a sandbox process only in sandbox.Wait()Andrei Vagin
PiperOrigin-RevId: 231504064 Change-Id: I585b769aef04a3ad7e7936027958910a6eed9c8d
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