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2020-09-15Merge pull request #3895 from btw616:fix/issue-3894gVisor bot
PiperOrigin-RevId: 331824411
2020-09-15Fix proc.(*fdDir).IterDirents for VFS2Tiwei Bie
Currently the returned offset is an index, and we can't use it to find the next fd to serialize, because getdents should iterate correctly despite mutation of fds. Instead, we can return the next fd to serialize plus 2 (which accounts for "." and "..") as the offset. Fixes: #3894 Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
2020-09-14Test RST handling in TIME_WAIT.Mithun Iyer
gVisor stack ignores RSTs when in TIME_WAIT which is not the default Linux behavior. Add a packetimpact test to test the same. Also update code comments to reflect the rationale for the current gVisor behavior. PiperOrigin-RevId: 331629879
2020-09-11Check that we have access to the trusted.* xattr namespace directly.Nicolas Lacasse
These operations require CAP_SYS_ADMIN in the root user namespace. There's no easy way to check that other than trying the operation and seeing what happens. PiperOrigin-RevId: 331242256
2020-09-11Use correct test device name in Fuchsia packetimpactAmanda Tait
Packetimpact on Fuchsia was formerly using the Linux test device name. This change fixes that. PiperOrigin-RevId: 331211518
2020-09-10[vfs] Disable inode number equality check for overlayfs.Ayush Ranjan
Overlayfs does not persist a directory's inode number even while it is mounted. See fs/overlayfs/inode.c:ovl_map_dev_ino(). VFS2 generates a new inode number for directories everytime in lookup. PiperOrigin-RevId: 331045037
2020-09-10[vfs] Disable nlink tests for overlayfs.Ayush Ranjan
Overlayfs intentionally does not compute nlink for directories (because it can be really expensive). Linux returns 1, VFS2 returns 2 and VFS1 actually calculates the correct value. PiperOrigin-RevId: 330967139
2020-09-08[vfs] overlayfs: Fix socket tests.Ayush Ranjan
- BindSocketThenOpen test was expecting the incorrect error when opening a socket. Fixed that. - VirtualFilesystem.BindEndpointAt should not require pop.Path.Begin.Ok() because the filesystem implementations do not need to walk to the parent dentry. This check also exists for MknodAt, MkdirAt, RmdirAt, SymlinkAt and UnlinkAt but those filesystem implementations also need to walk to the parent denty. So that check is valid. Added some syscall tests to test this. PiperOrigin-RevId: 330625220
2020-09-08Improve type safety for transport protocol optionsGhanan Gowripalan
The existing implementation for TransportProtocol.{Set}Option take arguments of an empty interface type which all types (implicitly) implement; any type may be passed to the functions. This change introduces marker interfaces for transport protocol options that may be set or queried which transport protocol option types implement to ensure that invalid types are caught at compile time. Different interfaces are used to allow the compiler to enforce read-only or set-only socket options. RELNOTES: n/a PiperOrigin-RevId: 330559811
2020-09-08[vfs] Capitalize x in the {Get/Set/Remove/List}xattr functions.Ayush Ranjan
PiperOrigin-RevId: 330554450
2020-09-03Run gentdents_benchmark with fewer files.Nicolas Lacasse
This test regularly times out when "shared" filesystem is enabled. PiperOrigin-RevId: 329950622
2020-09-03Avoid grpc_implTamir Duberstein
PiperOrigin-RevId: 329902747
2020-09-02Add support to run packetimpact tests against FuchsiaZeling Feng
blaze test <test_name>_fuchsia_test will run the corresponding packetimpact test against fuchsia. PiperOrigin-RevId: 329835290
2020-09-02Fix Accept to not return error for sockets in accept queue.Bhasker Hariharan
Accept on gVisor will return an error if a socket in the accept queue was closed before Accept() was called. Linux will return the new fd even if the returned socket is already closed by the peer say due to a RST being sent by the peer. This seems to be intentional in linux more details on the github issue. Fixes #3780 PiperOrigin-RevId: 329828404
2020-09-02Add Docs to nginx benchmark.Zach Koopmans
Adds docs to nginx and refactors both Httpd and Nginx benchmarks. Key changes: - Add docs and make nginx tests the same as httpd (reverse, all docs, etc.). - Make requests scale on c * b.N -> a request per thread. This works well with both --test.benchtime=10m (do a run that lasts at least 10m) and --test.benchtime=10x (do b.N = 10). -- Remove a doc from both tests (1000Kb) as 1024Kb exists. PiperOrigin-RevId: 329751091
2020-09-02[runtime tests] Exclude flaky nodejs testAyush Ranjan
PiperOrigin-RevId: 329749191
2020-09-01Fix statfs test for opensource.Zach Koopmans
PiperOrigin-RevId: 329638946
2020-09-01Implement setattr+clunk in 9PFabricio Voznika
This is to cover the common pattern: open->read/write->close, where SetAttr needs to be called to update atime/mtime before the file is closed. Benchmark results: BM_OpenReadClose/10240 CPU setattr+clunk: 63783 ns VFS2: 68109 ns VFS1: 72507 ns Updates #1198 PiperOrigin-RevId: 329628461
2020-09-01Fix handling of unacceptable ACKs during close.Mithun Iyer
On receiving an ACK with unacceptable ACK number, in a closing state, TCP, needs to reply back with an ACK with correct seq and ack numbers and remain in same state. This change is as per RFC793 page 37, but with a difference that it does not apply to ESTABLISHED state, just as in Linux. Also add more tests to check for OTW sequence number and unacceptable ack numbers in these states. Fixes #3785 PiperOrigin-RevId: 329616283
2020-09-01Test opening file handles with different permissions.Dean Deng
These were problematic for vfs2 gofers before correctly implementing separate read/write handles. PiperOrigin-RevId: 329613261
2020-09-01Refactor tty codebase to use master-replica terminology.Ayush Ranjan
Updates #2972 PiperOrigin-RevId: 329584905
2020-09-01Automated rollback of changelist 328350576Nayana Bidari
PiperOrigin-RevId: 329526153
2020-08-31Fix bug in bazel build benchmark.Zach Koopmans
PiperOrigin-RevId: 329409802
2020-08-31Set errno on response when syscall actually failsJay Zhuang
This prevents setting stale errno on responses. Also fixes TestDiscardsUDPPacketsWithMcastSourceAddressV6 to use correct multicast addresses in test. Fixes #3793 PiperOrigin-RevId: 329391155
2020-08-31Remove __fuchsia__ definesTamir Duberstein
These mostly guard linux-only headers; check for linux instead. PiperOrigin-RevId: 329362762
2020-08-31Run syscall tests in uts namespaces.Rahat Mahmood
Some syscall tests, namely uname_test_* modify the host and domain name, which modifies the execution environment and can have unintended consequences on other tests. For example, modifying the hostname causes some networking tests to fail DNS lookups. Run all syscall tests in their own uts namespaces to isolate these changes. PiperOrigin-RevId: 329348127
2020-08-28Include command output on errorTamir Duberstein
Currently the logs produce TestOne: packetimpact_test.go:182: listing devices on ... container: process terminated with status: 126 which is not actionable; presumably the `ip` command output is interesting. PiperOrigin-RevId: 329032105
2020-08-28Don't bind loopback to all IPs in an IPv6 subnetGhanan Gowripalan
An earlier change considered the loopback bound to all addresses in an assigned subnet. This should have only be done for IPv4 to maintain compatability with Linux: ``` $ ip addr show dev lo 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group ... link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever $ ping 2001:db8::1 PING 2001:db8::1(2001:db8::1) 56 data bytes ^C --- 2001:db8::1 ping statistics --- 4 packets transmitted, 0 received, 100% packet loss, time 3062ms $ ping 2001:db8::2 PING 2001:db8::2(2001:db8::2) 56 data bytes ^C --- 2001:db8::2 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2030ms $ sudo ip addr add 2001:db8::1/64 dev lo $ ping 2001:db8::1 PING 2001:db8::1(2001:db8::1) 56 data bytes 64 bytes from 2001:db8::1: icmp_seq=1 ttl=64 time=0.055 ms 64 bytes from 2001:db8::1: icmp_seq=2 ttl=64 time=0.074 ms 64 bytes from 2001:db8::1: icmp_seq=3 ttl=64 time=0.073 ms 64 bytes from 2001:db8::1: icmp_seq=4 ttl=64 time=0.071 ms ^C --- 2001:db8::1 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3075ms rtt min/avg/max/mdev = 0.055/0.068/0.074/0.007 ms $ ping 2001:db8::2 PING 2001:db8::2(2001:db8::2) 56 data bytes From 2001:db8::1 icmp_seq=1 Destination unreachable: No route From 2001:db8::1 icmp_seq=2 Destination unreachable: No route From 2001:db8::1 icmp_seq=3 Destination unreachable: No route From 2001:db8::1 icmp_seq=4 Destination unreachable: No route ^C --- 2001:db8::2 ping statistics --- 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3070ms ``` Test: integration_test.TestLoopbackAcceptAllInSubnet PiperOrigin-RevId: 329011566
2020-08-28Implement StatFS for various VFS2 filesystems.Rahat Mahmood
This mainly involved enabling kernfs' client filesystems to provide a StatFS implementation. Fixes #3411, #3515. PiperOrigin-RevId: 329009864
2020-08-28Fix EOF handling for splice.Dean Deng
Also, add corresponding EOF tests for splice/sendfile. Discovered by syzkaller. PiperOrigin-RevId: 328975990
2020-08-28fix panic when calling SO_ORIGINAL_DST without initializing iptablesKevin Krakauer
Reported-by: syzbot+074ec22c42305725b79f@syzkaller.appspotmail.com PiperOrigin-RevId: 328963899
2020-08-28Add test demonstrating accept bugTamir Duberstein
Updates #3780. PiperOrigin-RevId: 328922573
2020-08-27Fix vfs2 pipe behavior when splicing to a non-pipe.Dean Deng
Fixes *.sh Java runtime tests, where splice()-ing from a pipe to /dev/zero would not actually empty the pipe. There was no guarantee that the data would actually be consumed on a splice operation unless the output file's implementation of Write/PWrite actually called VFSPipeFD.CopyIn. Now, whatever bytes are "written" are consumed regardless of whether CopyIn is called or not. Furthermore, the number of bytes in the IOSequence for reads is now capped at the amount of data actually available. Before, splicing to /dev/zero would always return the requested splice size without taking the actual available data into account. This change also refactors the case where an input file is spliced into an output pipe so that it follows a similar pattern, which is arguably cleaner anyway. Updates #3576. PiperOrigin-RevId: 328843954
2020-08-27unix: return ECONNREFUSE if a socket file exists but a socket isn't bound to itAndrei Vagin
PiperOrigin-RevId: 328843560
2020-08-27Merge pull request #3077 from jinmouil:beef-write-syscallgVisor bot
PiperOrigin-RevId: 328824023
2020-08-27Fix BadSocketPair for open source.Zach Koopmans
BadSocketPair test will return several errnos (EPREM, ESOCKTNOSUPPORT, EAFNOSUPPORT) meaning the test is just too specific. Checking the syscall fails is appropriate. PiperOrigin-RevId: 328813071
2020-08-27Skip IPv6UDPUnboundSocketNetlinkTest on native linuxGhanan Gowripalan
...while we figure out of we want to consider the loopback interface bound to all IPs in an assigned IPv6 subnet, or not (to maintain compatibility with Linux). PiperOrigin-RevId: 328807974
2020-08-27ip6tables: (de)serialize ip6tables structsKevin Krakauer
More implementation+testing to follow. #3549. PiperOrigin-RevId: 328770160
2020-08-27Fix JobControl tests for open source.Zach Koopmans
ioctl calls with TIOCSCTTY fail if the calling process already has a controlling terminal, which occurs on a 5.4 kernel like our Ubuntu 18 CI. Thus, run tests calling ioctl TTOCSCTTY in clean subprocess. Also, while we're here, switch out non-inclusive master/slave for main/replica. PiperOrigin-RevId: 328756598
2020-08-26beef up write syscall testsJinmou Li
Added a few tests for write(2) and pwrite(2) 1. Regular Files For write(2) - write zero bytes should not move the offset - write non-zero bytes should increment the offset the exact amount - write non-zero bytes after a lseek() should move the offset the exact amount after the seek - write non-zero bytes with O_APPEND should move the offset the exact amount after original EOF For pwrite(2), offset is not affected when - pwrite zero bytes - pwrite non-zero bytes For EOF, added a test asserting the EOF (indicated by lseek(SEEK_END)) is updated properly after writing non-zero bytes 2. Symlink Added one pwite64() call for symlink that is written as a counterpart of the existing test using pread64()
2020-08-26[runtime-tests] Exclude flaky nodejs test.Ayush Ranjan
PiperOrigin-RevId: 328579755
2020-08-26tmpfs: Allow xattrs in the trusted namespace if creds has CAP_SYS_ADMIN.Nicolas Lacasse
This is needed to support the overlay opaque attribute. PiperOrigin-RevId: 328552985
2020-08-25Fix SocketPairTest and BadSocketPairTest in opensource.Zach Koopmans
PiperOrigin-RevId: 328467152
2020-08-25Expose basic coverage information to userspace through kcov interface.Dean Deng
In Linux, a kernel configuration is set that compiles the kernel with a custom function that is called at the beginning of every basic block, which updates the memory-mapped coverage information. The Go coverage tool does not allow us to inject arbitrary instructions into basic blocks, but it does provide data that we can convert to a kcov-like format and transfer them to userspace through a memory mapping. Note that this is not a strict implementation of kcov, which is especially tricky to do because we do not have the same coverage tools available in Go that that are available for the actual Linux kernel. In Linux, a kernel configuration is set that compiles the kernel with a custom function that is called at the beginning of every basic block to write program counters to the kcov memory mapping. In Go, however, coverage tools only give us a count of basic blocks as they are executed. Every time we return to userspace, we collect the coverage information and write out PCs for each block that was executed, providing userspace with the illusion that the kcov data is always up to date. For convenience, we also generate a unique synthetic PC for each block instead of using actual PCs. Finally, we do not provide thread-specific coverage data (each kcov instance only contains PCs executed by the thread owning it); instead, we will supply data for any file specified by -- instrumentation_filter. Also, fix issue in nogo that was causing pkg/coverage:coverage_nogo compilation to fail. PiperOrigin-RevId: 328426526
2020-08-25Link to PHP bug for disabled disk space tests.Jamie Liu
PiperOrigin-RevId: 328410399
2020-08-25remove iptables sockopt special casesKevin Krakauer
iptables sockopts were kludged into an unnecessary check, this properly relegates them to the {get,set}SockOptIP functions. PiperOrigin-RevId: 328395135
2020-08-25Add nogo support to go_binary and go_test targets.Adin Scannell
Updates #3374 PiperOrigin-RevId: 328378700
2020-08-25Support SO_LINGER socket option.Nayana Bidari
When SO_LINGER option is enabled, the close will not return until all the queued messages are sent and acknowledged for the socket or linger timeout is reached. If the option is not set, close will return immediately. This option is mainly supported for connection oriented protocols such as TCP. PiperOrigin-RevId: 328350576
2020-08-25Disable PHP disk space tests.Jamie Liu
These tests print disk_free_space()/disk_total_space() and expect the printed result to be an integer (despite the fact that both the documented and returned type is float). After cl/297213789, free/total disk space on tmpfs is sufficiently large that PHP prints the result in scientific notation instead: ========DIFF======== 012+ float(9.2233720368548E+18) 013+ float(9.2233720368548E+18) 012- float(%d) 013- float(%d) ========DONE======== FAIL disk_total_space() and disk_free_space() tests [ext/standard/tests/file/disk.phpt] PiperOrigin-RevId: 328349906
2020-08-25Fix TCP_LINGER2 behavior to match linux.Bhasker Hariharan
We still deviate a bit from linux in how long we will actually wait in FIN-WAIT-2. Linux seems to cap it with TIME_WAIT_LEN and it's not completely obvious as to why it's done that way. For now I think we can ignore that and fix it if it really is an issue. PiperOrigin-RevId: 328324922
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