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2019-08-15Merge 816a9211 (automated)gVisor bot
2019-08-15netstack: move resumption logic into *_state.goTamir Duberstein
13a98df rearranged some of this code in a way that broke compilation of the netstack-only export at github.com/google/netstack because *_state.go files are not included in that export. This commit moves resumption logic back into *_state.go, fixing the compilation breakage. PiperOrigin-RevId: 263601629
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 69d1414a (automated)gVisor bot
2019-08-14Add tcpip.AddressWithPrefix.StringTamir Duberstein
PiperOrigin-RevId: 263436592
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
2019-08-14Merge cee044c2 (automated)gVisor bot
2019-08-13Add vfs.DynamicBytesFileDescriptionImpl.Jamie Liu
This replaces fs/proc/seqfile for vfs2-based filesystems. PiperOrigin-RevId: 263254647
2019-08-13Merge 0e907c42 (automated)gVisor bot
2019-08-13Fix file mode check in pipeOperationsFabricio Voznika
PiperOrigin-RevId: 263203441
2019-08-13Add note to name logging mentioning trace logging should be enabled to debug.Ian Gudger
PiperOrigin-RevId: 263194584
2019-08-13Merge c386f046 (automated)gVisor bot
2019-08-13Merge 99bf75a6 (automated)gVisor bot
2019-08-13gonet: Replace NewPacketConn with DialUDP.Ian Gudger
This better matches the standard library and allows creating connected PacketConns. PiperOrigin-RevId: 263187462
2019-08-13Merge 8d97b22a (automated)gVisor bot
2019-08-13Merge 691c2f81 (automated)gVisor bot
2019-08-12Handle ENOSPC with a partial write.Nicolas Lacasse
Similar to the EPIPE case, we can return the number of bytes written before ENOSPC was encountered. If the app tries to write more, we can return ENOSPC on the next write. PiperOrigin-RevId: 263041648
2019-08-12Compute size of struct tcp_info instead of hardcoding it.Rahat Mahmood
PiperOrigin-RevId: 263040624
2019-08-12Merge eac690e3 (automated)gVisor bot
2019-08-12Fix netstack build error on non-AMD64.Ian Gudger
This stub had the wrong function signature. PiperOrigin-RevId: 262992682
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
2019-08-09Merge f2762e8c (automated)gVisor bot
2019-08-09Merge 5a38eb12 (automated)gVisor bot
2019-08-09Add congestion control states to sender.Bhasker Hariharan
This change just introduces different congestion control states and ensures the sender.state is updated to reflect the current state of the connection. It is not used for any decisions yet but this is required before algorithms like Eiffel/PRR can be implemented. Fixes #394 PiperOrigin-RevId: 262638292
2019-08-09Add initial ptrace stub and syscall support for arm64.Haibo Xu
Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I1dbd23bb240cca71d0cc30fc75ca5be28cb4c37c PiperOrigin-RevId: 262619519
2019-08-09ext: Move to pkg/sentry/fsimpl.Ayush Ranjan
fsimpl is the keeper of all filesystem implementations in VFS2. PiperOrigin-RevId: 262617869
2019-08-09Merge 69030811 (automated)gVisor bot
2019-08-08ext: Benchmark tests.Ayush Ranjan
Added benchmark tests which emulate memfs benchmarks. Stat benchmarks BenchmarkVFS2Ext4fsStat/1-12 10000000 145 ns/op BenchmarkVFS2Ext4fsStat/2-12 10000000 170 ns/op BenchmarkVFS2Ext4fsStat/3-12 10000000 202 ns/op BenchmarkVFS2Ext4fsStat/8-12 3000000 374 ns/op BenchmarkVFS2Ext4fsStat/64-12 500000 2159 ns/op BenchmarkVFS2Ext4fsStat/100-12 300000 3459 ns/op BenchmarkVFS1TmpfsStat/1-12 5000000 348 ns/op BenchmarkVFS1TmpfsStat/2-12 3000000 487 ns/op BenchmarkVFS1TmpfsStat/3-12 2000000 655 ns/op BenchmarkVFS1TmpfsStat/8-12 1000000 1365 ns/op BenchmarkVFS1TmpfsStat/64-12 200000 9565 ns/op BenchmarkVFS1TmpfsStat/100-12 100000 15158 ns/op BenchmarkVFS2MemfsStat/1-12 10000000 133 ns/op BenchmarkVFS2MemfsStat/2-12 10000000 155 ns/op BenchmarkVFS2MemfsStat/3-12 10000000 182 ns/op BenchmarkVFS2MemfsStat/8-12 5000000 310 ns/op BenchmarkVFS2MemfsStat/64-12 1000000 1659 ns/op BenchmarkVFS2MemfsStat/100-12 500000 2787 ns/op Mount Stat benchmarks BenchmarkVFS2ExtfsMountStat/1-12 5000000 245 ns/op BenchmarkVFS2ExtfsMountStat/2-12 5000000 266 ns/op BenchmarkVFS2ExtfsMountStat/3-12 5000000 304 ns/op BenchmarkVFS2ExtfsMountStat/8-12 3000000 456 ns/op BenchmarkVFS2ExtfsMountStat/64-12 500000 2308 ns/op BenchmarkVFS2ExtfsMountStat/100-12 300000 3482 ns/op BenchmarkVFS1TmpfsMountStat/1-12 3000000 488 ns/op BenchmarkVFS1TmpfsMountStat/2-12 2000000 658 ns/op BenchmarkVFS1TmpfsMountStat/3-12 2000000 806 ns/op BenchmarkVFS1TmpfsMountStat/8-12 1000000 1514 ns/op BenchmarkVFS1TmpfsMountStat/64-12 100000 10037 ns/op BenchmarkVFS1TmpfsMountStat/100-12 100000 15280 ns/op BenchmarkVFS2MemfsMountStat/1-12 10000000 212 ns/op BenchmarkVFS2MemfsMountStat/2-12 5000000 232 ns/op BenchmarkVFS2MemfsMountStat/3-12 5000000 264 ns/op BenchmarkVFS2MemfsMountStat/8-12 3000000 390 ns/op BenchmarkVFS2MemfsMountStat/64-12 1000000 1813 ns/op BenchmarkVFS2MemfsMountStat/100-12 500000 2812 ns/op PiperOrigin-RevId: 262477158
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
2019-08-08Merge 06102af6 (automated)gVisor bot
2019-08-08memfs fixes.Jamie Liu
- Unexport Filesystem/Dentry/Inode. - Support SEEK_CUR in directoryFD.Seek(). - Hold Filesystem.mu before touching directoryFD.off in directoryFD.Seek(). - Remove deleted Dentries from their parent directory.childLists. - Remove invalid FIXMEs. PiperOrigin-RevId: 262400633
2019-08-08Merge 08cd5e1d (automated)gVisor bot
2019-08-07ext: Seek unit tests.Ayush Ranjan
PiperOrigin-RevId: 262264674
2019-08-08Merge 40d6d8c1 (automated)gVisor bot
2019-08-07ext: StatAt unit tests.Ayush Ranjan
PiperOrigin-RevId: 262249166
2019-08-07Merge 3b368cab (automated)gVisor bot
2019-08-07ext: Read unit tests.Ayush Ranjan
PiperOrigin-RevId: 262242410
2019-08-07Merge ad67e5a7 (automated)gVisor bot
2019-08-07ext: IterDirent unit tests.Ayush Ranjan
PiperOrigin-RevId: 262226761
2019-08-07Merge 1c9781a4 (automated)gVisor bot
2019-08-07ext: vfs.FileDescriptionImpl and vfs.FilesystemImpl implementations.Ayush Ranjan
- This also gets rid of pipes for now because pipe does not have vfs2 specific support yet. - Added file path resolution logic. - Fixes testing infrastructure. - Does not include unit tests yet. PiperOrigin-RevId: 262213950
2019-08-07Merge 79cc4397 (automated)gVisor bot
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