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2019-09-13Merge release-20190806.1-142-g7c6ab6a (automated)gVisor bot
2019-09-12Implement splice methods for pipes and sockets.Adin Scannell
This also allows the tee(2) implementation to be enabled, since dup can now be properly supported via WriteTo. Note that this change necessitated some minor restructoring with the fs.FileOperations splice methods. If the *fs.File is passed through directly, then only public API methods are accessible, which will deadlock immediately since the locking is already done by fs.Splice. Instead, we pass through an abstract io.Reader or io.Writer, which elide locks and use the underlying fs.FileOperations directly. PiperOrigin-RevId: 268805207
2019-09-12Remove go_test from go_stateify and go_marshalMichael Pratt
They are no-ops, so the standard rule works fine. PiperOrigin-RevId: 268776264
2019-08-31Merge 502c47f7 (automated)gVisor bot
2019-08-30Return correct buffer size for ioctl(socket, FIONREAD)Fabricio Voznika
Ioctl was returning just the buffer size from epsocket.endpoint and it was not considering data from epsocket.SocketOperations that was read from the endpoint, but not yet sent to the caller. PiperOrigin-RevId: 266485461
2019-08-29Merge 863e11ac (automated)gVisor bot
2019-08-29Implement /proc/net/udp.Rahat Mahmood
PiperOrigin-RevId: 266229756
2019-08-21Merge 573e6e4b (automated)gVisor bot
2019-08-21Use tcpip.Subnet in tcpip.RouteTamir Duberstein
This is the first step in replacing some of the redundant types with the standard library equivalents. PiperOrigin-RevId: 264706552
2019-08-19Merge 3ffbdffd (automated)gVisor bot
2019-08-19hostinet: fix parsing route netlink messageJianfeng Tan
We wrongly parses output interface as gateway address. The fix is straightforward. Fixes #638 Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com> Change-Id: Ia4bab31f3c238b0278ea57ab22590fad00eaf061 COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/684 from tanjianfeng:fix-638 b940e810367ad1273519bfa594f4371bdd293e83 PiperOrigin-RevId: 264211336
2019-08-19Read iptables via sockopts.Kevin Krakauer
PiperOrigin-RevId: 264180125
2019-08-16netstack: disconnect an unix socket only if the address family is AF_UNSPECAndrei Vagin
Linux allows to call connect for ANY and the zero port. PiperOrigin-RevId: 263892534
2019-08-14Merge d81d94ac (automated)gVisor bot
2019-08-14Replace uinptr with int64 when returning lengthsTamir Duberstein
This is in accordance with newer parts of the standard library. PiperOrigin-RevId: 263449916
2019-08-14Merge 570fb1db (automated)gVisor bot
2019-08-14Improve SendMsg performance.Bhasker Hariharan
SendMsg before this change would copy all the data over into a new slice even if the underlying socket could only accept a small amount of data. This is really inefficient with non-blocking sockets and under high throughput where large writes could get ErrWouldBlock or if there was say a timeout associated with the sendmsg() syscall. With this change we delay copying bytes in till they are needed and only copy what can be potentially sent/held in the socket buffer. Reducing the need to repeatedly copy data over. Also a minor fix to change state FIN-WAIT-1 when shutdown(..., SHUT_WR) is called instead of when we transmit the actual FIN. Otherwise the socket could remain in CONNECTED state even though the user has called shutdown() on the socket. Updates #627 PiperOrigin-RevId: 263430505
2019-08-10Merge af90e686 (automated)gVisor bot
2019-08-09netlink: return an error in nlmsgerrAndrei Vagin
Now if a process sends an unsupported netlink requests, an error is returned from the send system call. The linux kernel works differently in this case. It returns errors in the nlmsgerr netlink message. Reported-by: syzbot+571d99510c6f935202da@syzkaller.appspotmail.com PiperOrigin-RevId: 262690453
2019-08-08Merge 7bfad8eb (automated)gVisor bot
2019-08-08Return a well-defined socket address type from socket funtions.Rahat Mahmood
Previously we were representing socket addresses as an interface{}, which allowed any type which could be binary.Marshal()ed to be used as a socket address. This is fine when the address is passed to userspace via the linux ABI, but is problematic when used from within the sentry such as by networking procfs files. PiperOrigin-RevId: 262460640
2019-08-08Merge 13a98df4 (automated)gVisor bot
2019-08-08netstack: Don't start endpoint goroutines too soon on restore.Rahat Mahmood
Endpoint protocol goroutines were previously started as part of loading the endpoint. This is potentially too soon, as resources used by these goroutine may not have been loaded. Protocol goroutines may perform meaningful work as soon as they're started (ex: incoming connect) which can cause them to indirectly access resources that haven't been loaded yet. This CL defers resuming all protocol goroutines until the end of restore. PiperOrigin-RevId: 262409429
2019-08-08Merge 2e45d169 (automated)gVisor bot
2019-08-08Merge pull request #653 from xiaobo55x:devgVisor bot
PiperOrigin-RevId: 262402929
2019-08-05Change syscall.EPOLLET to unix.EPOLLETHaibo Xu
syscall.EPOLLET has been defined with different values on amd64 and arm64(-0x80000000 on amd64, and 0x80000000 on arm64), while unix.EPOLLET has been unified this value to 0x80000000(golang/go#5328). ref #63 Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: Id97d075c4e79d86a2ea3227ffbef02d8b00ffbb8
2019-08-02Merge 960a5e55 (automated)gVisor bot
2019-08-02Plumbing for iptables sockopts.Kevin Krakauer
PiperOrigin-RevId: 261413396
2019-08-02Merge 2906dffc (automated)gVisor bot
2019-08-02Automated rollback of changelist 261191548Rahat Mahmood
PiperOrigin-RevId: 261373749
2019-08-01Merge f2b25aea (automated)gVisor bot
2019-08-01Implement getsockopt(TCP_INFO).Rahat Mahmood
Export some readily-available fields for TCP_INFO and stub out the rest. PiperOrigin-RevId: 261191548
2019-08-01Merge 0a246fab (automated)gVisor bot
2019-07-31Basic support for 'ip route'Ian Lewis
Implements support for RTM_GETROUTE requests for netlink sockets. Fixes #507 PiperOrigin-RevId: 261051045
2019-07-24Merge 2ed832ff (automated)gVisor bot
2019-07-24Add support for a subnet prefix length on interface network addressesChris Kuiper
This allows the user code to add a network address with a subnet prefix length. The prefix length value is stored in the network endpoint and provided back to the user in the ProtocolAddress type. PiperOrigin-RevId: 259807693
2019-07-18Merge eefa817c (automated)gVisor bot
2019-07-18net/tcp/setockopt: impelment setsockopt(fd, SOL_TCP, TCP_INQ)Andrei Vagin
PiperOrigin-RevId: 258859507
2019-07-17Merge 9f118913 (automated)gVisor bot
2019-07-17Add AF_UNIX, SOCK_RAW sockets, which exist for some reason.Kevin Krakauer
tcpdump creates these. PiperOrigin-RevId: 258611829
2019-07-16Merge cf4fc510 (automated)gVisor bot
2019-07-15Support /proc/net/devJianfeng Tan
This proc file reports the stats of interfaces. We could use ifconfig command to check the result. Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com> Change-Id: Ia7c1e637f5c76c30791ffda68ee61e861b6ef827 COPYBARA_INTEGRATE_REVIEW=https://gvisor-review.googlesource.com/c/gvisor/+/18282/ PiperOrigin-RevId: 258303936
2019-07-13Merge 9b4d3280 (automated)gVisor bot
2019-07-12Add IPPROTO_RAW, which allows raw sockets to write IP headers.Kevin Krakauer
iptables also relies on IPPROTO_RAW in a way. It opens such a socket to manipulate the kernel's tables, but it doesn't actually use any of the functionality. Blegh. PiperOrigin-RevId: 257903078
2019-07-12Merge 6116473b (automated)gVisor bot
2019-07-12Stub out support for TCP_MAXSEG.Bhasker Hariharan
Adds support to set/get the TCP_MAXSEG value but does not really change the segment sizes emitted by netstack or alter the MSS advertised by the endpoint. This is currently being added only to unblock iperf3 on gVisor. Plumbing this correctly requires a bit more work which will come in separate CLs. PiperOrigin-RevId: 257859112
2019-07-12Merge 69e0affa (automated)gVisor bot
2019-07-03netstack/udp: connect with the AF_UNSPEC address family means disconnectAndrei Vagin
PiperOrigin-RevId: 256433283
2019-07-02Remove map from fd_map, change to fd_table.Adin Scannell
This renames FDMap to FDTable and drops the kernel.FD type, which had an entire package to itself and didn't serve much use (it was freely cast between types, and served as more of an annoyance than providing any protection.) Based on BenchmarkFDLookupAndDecRef-12, we can expect 5-10 ns per lookup operation, and 10-15 ns per concurrent lookup operation of savings. This also fixes two tangential usage issues with the FDMap. Namely, non-atomic use of NewFDFrom and associated calls to Remove (that are both racy and fail to drop the reference on the underlying file.) PiperOrigin-RevId: 256285890
2019-07-01Fix unix/transport.queue reference leaks.Ian Gudger
Fix two leaks for connectionless Unix sockets: * Double connect: Subsequent connects would leak a reference on the previously connected endpoint. * Close unconnected: Sockets which were not connected at the time of closure would leak a reference on their receiver. PiperOrigin-RevId: 256070451
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