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2019-12-16Implement checks for get/setxattr at the syscall layer.Dean Deng
Add checks for input arguments, file type, permissions, etc. that match the Linux implementation. A call to get/setxattr that passes all the checks will still currently return EOPNOTSUPP. Actual support will be added in following commits. Only allow user.* extended attributes for the time being. PiperOrigin-RevId: 285835159
2019-12-12unix: allow to bind unix sockets only to AF_UNIX addressesAndrei Vagin
Reported-by: syzbot+2c0bcfd87fb4e8b7b009@syzkaller.appspotmail.com PiperOrigin-RevId: 285228312
2019-12-11Add support for TCP_USER_TIMEOUT option.Bhasker Hariharan
The implementation follows the linux behavior where specifying a TCP_USER_TIMEOUT will cause the resend timer to honor the user specified timeout rather than the default rto based timeout. Further it alters when connections are timedout due to keepalive failures. It does not alter the behavior of when keepalives are sent. This is as per the linux behavior. PiperOrigin-RevId: 285099795
2019-12-11Add syscall tests for getxattr and setxattr.Dean Deng
Support for getxattr and setxattr are in subsequent commits. PiperOrigin-RevId: 285088817
2019-12-10Re-enable execveat test that was causing files in /bin to be deleted.Dean Deng
Test now no longer deletes files incorrectly, due to a fix in fs utils used by TempPath (github.com/google/gvisor/pull/1368). Fixes #1366 PiperOrigin-RevId: 284814605
2019-12-10Disable execveat test that is causing files in /bin to be deleted.Dean Deng
Disable until gvisor.dev/issue/1366 is resolved. Updates #1366 PiperOrigin-RevId: 284786895
2019-12-10Add hostinet tests for sendmsg and recvmsg with TOS/TCLASS.Dean Deng
PiperOrigin-RevId: 284786069
2019-12-09Add test for SO_BINDTODEVICE state bug.Ian Gudger
This was accidentally dropped from the change which fixed the bug. Updates #1217 PiperOrigin-RevId: 284689362
2019-12-09Add UDP SO_REUSEADDR support to the port manager.Ian Gudger
Next steps include adding support to the transport demuxer and the UDP endpoint. PiperOrigin-RevId: 284652151
2019-12-09Include <netinet/tcp.h> for TCP enums in proc_net testsJay Zhuang
These are currently duplicated in ip_socket_test_util, so tests including both netinet/tcp.h and ip_socket_test_util won't compile. PiperOrigin-RevId: 284623958
2019-12-09Mark test as non flaky.Bhasker Hariharan
PiperOrigin-RevId: 284606133
2019-12-09Add tests for rseq(2)Michael Pratt
Add a decent set of syscall tests for rseq(2). These are a bit awkward because of issues with library integration. libc may register rseq on thread start (including before main on the initial thread), precluding much testing. Thus we run tests in a libc-free subprocess. Support for rseq(2) in gVisor will come in a later commit. PiperOrigin-RevId: 284595994
2019-12-06Add hostinet tests for UDP sockets.Dean Deng
We need to skip a subset of the tests, because of features that hostinet does not currently support. Fixes #1209 PiperOrigin-RevId: 284235911
2019-12-05Implement F_GETOWN_EX and F_SETOWN_EX.Ian Gudger
Some versions of glibc will convert F_GETOWN fcntl(2) calls into F_GETOWN_EX in some cases. PiperOrigin-RevId: 284089373
2019-12-05Reduce flakiness under gotsan runs.Bhasker Hariharan
TcpPortReuseMultiThread creates lots of connections which result in a lot of goroutines in the sentry. This can cause gotsan runs to take really long and timeout. Increasing listen backlog and reducing number of connections should help the connections complete faster as well as reduce the number of goroutines that gotsan needs to track. PiperOrigin-RevId: 284046018
2019-12-05Create correct file for /proc/[pid]/task/[tid]/ioZach Koopmans
PiperOrigin-RevId: 284038840
2019-12-05Explicitly export files needed by other packagesgVisor bot
PiperOrigin-RevId: 283955946
2019-12-04Allow syscall tests to run with hostinet.Dean Deng
Fixes #1207 PiperOrigin-RevId: 283914438
2019-12-03Clean up readv_socket test suite.Dean Deng
Get rid of the SocketTest class, which is only extended by ReadvSocketTest. Also, get rid of TCP sockets (which were unused anyway) from readv_socket.cc. This is a very old test suite that isn't the right place for TCP loopback tests. PiperOrigin-RevId: 283672772
2019-12-03Point TODO to gvisor.devFabricio Voznika
PiperOrigin-RevId: 283657725
2019-12-03net/udp: return a local route address as the bound-to addressAndrei Vagin
If the socket is bound to ANY and connected to a loopback address, getsockname() has to return the loopback address. Without this fix, getsockname() returns ANY. PiperOrigin-RevId: 283647781
2019-12-03Fix panic due to early transition to Closed.Bhasker Hariharan
The code in rcv.consumeSegment incorrectly transitions to CLOSED state from LAST-ACK before the final ACK for the FIN. Further if receiving a segment changes a socket to a closed state then we should not invoke the sender as the socket is now closed and sending any segments is incorrect. PiperOrigin-RevId: 283625300
2019-12-03strace: don't create a slice with a negative valueAndrei Vagin
PiperOrigin-RevId: 283613824
2019-12-03Add RunfilesPath to test_utilMichael Pratt
A few tests have their own ad-hoc implementations. Add a single common one. PiperOrigin-RevId: 283601666
2019-12-02test/syscal: Don't skip ClockGettime.CputimeIdAndrei Vagin
We skipped it due to the issue in the golang scheduler which has been fixed in go1.13. PiperOrigin-RevId: 283432226
2019-12-02Fix typo, s/Convertable/Convertible/gJay Zhuang
PiperOrigin-RevId: 283345791
2019-12-02Port tests in udp_socket.cc to FuchsiaJay Zhuang
Separate out a test in udp_socket.cc that depends on <linux/errqueue.h> so the rest of the tests can run on Fuchsia. PiperOrigin-RevId: 283322633
2019-11-27Add floating point exception testsMichael Pratt
PiperOrigin-RevId: 282828273
2019-11-26Allow open(O_TRUNC) and (f)truncate for proc files.Ian Lewis
This allows writable proc and devices files to be opened with O_CREAT|O_TRUNC. This is encountered most frequently when interacting with proc or devices files via the command line. e.g. $ echo 8192 1048576 4194304 > /proc/sys/net/ipv4/tcp_rmem Also adds a test to test the behavior of open(O_TRUNC), truncate, and ftruncate on named pipes. Fixes #1116 PiperOrigin-RevId: 282677425
2019-11-22tests: include sys/socket.h before linux/if_arp.hAndrei Vagin
This is how it has to be accoding to the man page. PiperOrigin-RevId: 281998068
2019-11-21Import and structure cleanup.Adin Scannell
PiperOrigin-RevId: 281795269
2019-11-14Fix return codes for {get,set}sockopt for some nullptr cases.Ting-Yu Wang
Updates #1092 PiperOrigin-RevId: 280547239
2019-11-14Check that a file is a regular file with open(O_TRUNC).Kevin Krakauer
It was possible to panic the sentry by opening a cache revalidating folder with O_TRUNC|O_CREAT. Avoids breaking php tests. PiperOrigin-RevId: 280533213
2019-11-13test/syscalls/proc: check an return code of waitidAndrei Vagin
PiperOrigin-RevId: 280295208
2019-11-12Add UDP SO_REUSEADDR/SO_REUSEPORT conversion tests.Ian Gudger
Add additional tests for UDP SO_REUSEADDR and SO_REUSEPORT interaction. If all existing all currently bound sockets as well as the current binding socket have SO_REUSEADDR, or if all existing all currently bound sockets as well as the current binding socket have SO_REUSEPORT, binding a currently bound address is allowed. This seems odd since it means that the SO_REUSEADDR/SO_REUSEPORT behavior can change with the binding of additional sockets. PiperOrigin-RevId: 280116163
2019-11-12Add tests for SO_REUSEADDR and SO_REUSEPORT.Ian Gudger
* Basic tests for the SO_REUSEADDR and SO_REUSEPORT options. * SO_REUSEADDR functional tests for TCP and UDP. * SO_REUSEADDR and SO_REUSEPORT interaction tests for UDP. * Stubbed support for UDP getsockopt(SO_REUSEADDR). PiperOrigin-RevId: 280049265
2019-11-11Update ephemeral port reservation tests.Ian Gudger
The existing tests which are disabled on gVisor are failing because we default to SO_REUSEADDR being enabled for TCP sockets. Update the test comments. Also add new tests for enabled SO_REUSEADDR. PiperOrigin-RevId: 279862275
2019-11-11Remove obsolete TODO. This is now fixed.Bhasker Hariharan
PiperOrigin-RevId: 279835100
2019-11-11Make `connect` on socket returned by `accept` correctly error out with EISCONNgVisor bot
PiperOrigin-RevId: 279814493
2019-11-07Add support for TIME_WAIT timeout.Bhasker Hariharan
This change adds explicit support for honoring the 2MSL timeout for sockets in TIME_WAIT state. It also adds support for the TCP_LINGER2 option that allows modification of the FIN_WAIT2 state timeout duration for a given socket. It also adds an option to modify the Stack wide TIME_WAIT timeout but this is only for testing. On Linux this is fixed at 60s. Further, we also now correctly process RST's in CLOSE_WAIT and close the socket similar to linux without moving it to error state. We also now handle SYN in ESTABLISHED state as per RFC5961#section-4.1. Earlier we would just drop these SYNs. Which can result in some tests that pass on linux to fail on gVisor. Netstack now honors TIME_WAIT correctly as well as handles the following cases correctly. - TCP RSTs in TIME_WAIT are ignored. - A duplicate TCP FIN during TIME_WAIT extends the TIME_WAIT and a dup ACK is sent in response to the FIN as the dup FIN indicates potential loss of the original final ACK. - An out of order segment during TIME_WAIT generates a dup ACK. - A new SYN w/ a sequence number > the highest sequence number in the previous connection closes the TIME_WAIT early and opens a new connection. Further to make the SYN case work correctly the ISN (Initial Sequence Number) generation for Netstack has been updated to be as per RFC. Its not a pure random number anymore and follows the recommendation in https://tools.ietf.org/html/rfc6528#page-3. The current hash used is not a cryptographically secure hash function. A separate change will update the hash function used to Siphash similar to what is used in Linux. PiperOrigin-RevId: 279106406
2019-11-06Fix yet another data race.Bhasker Hariharan
Fixes #1140 PiperOrigin-RevId: 279020846
2019-11-06Fix data race in syscall_test_runner.goBhasker Hariharan
Fixes #1140 PiperOrigin-RevId: 279012793
2019-11-06Use PacketBuffers, rather than VectorisedViews, in netstack.Kevin Krakauer
PacketBuffers are analogous to Linux's sk_buff. They hold all information about a packet, headers, and payload. This is important for: * iptables to access various headers of packets * Preventing the clutter of passing different net and link headers along with VectorisedViews to packet handling functions. This change only affects the incoming packet path, and a future change will change the outgoing path. Benchmark Regular PacketBufferPtr PacketBufferConcrete -------------------------------------------------------------------------------- BM_Recvmsg 400.715MB/s 373.676MB/s 396.276MB/s BM_Sendmsg 361.832MB/s 333.003MB/s 335.571MB/s BM_Recvfrom 453.336MB/s 393.321MB/s 381.650MB/s BM_Sendto 378.052MB/s 372.134MB/s 341.342MB/s BM_SendmsgTCP/0/1k 353.711MB/s 316.216MB/s 322.747MB/s BM_SendmsgTCP/0/2k 600.681MB/s 588.776MB/s 565.050MB/s BM_SendmsgTCP/0/4k 995.301MB/s 888.808MB/s 941.888MB/s BM_SendmsgTCP/0/8k 1.517GB/s 1.274GB/s 1.345GB/s BM_SendmsgTCP/0/16k 1.872GB/s 1.586GB/s 1.698GB/s BM_SendmsgTCP/0/32k 1.017GB/s 1.020GB/s 1.133GB/s BM_SendmsgTCP/0/64k 475.626MB/s 584.587MB/s 627.027MB/s BM_SendmsgTCP/0/128k 416.371MB/s 503.434MB/s 409.850MB/s BM_SendmsgTCP/0/256k 323.449MB/s 449.599MB/s 388.852MB/s BM_SendmsgTCP/0/512k 243.992MB/s 267.676MB/s 314.474MB/s BM_SendmsgTCP/0/1M 95.138MB/s 95.874MB/s 95.417MB/s BM_SendmsgTCP/0/2M 96.261MB/s 94.977MB/s 96.005MB/s BM_SendmsgTCP/0/4M 96.512MB/s 95.978MB/s 95.370MB/s BM_SendmsgTCP/0/8M 95.603MB/s 95.541MB/s 94.935MB/s BM_SendmsgTCP/0/16M 94.598MB/s 94.696MB/s 94.521MB/s BM_SendmsgTCP/0/32M 94.006MB/s 94.671MB/s 94.768MB/s BM_SendmsgTCP/0/64M 94.133MB/s 94.333MB/s 94.746MB/s BM_SendmsgTCP/0/128M 93.615MB/s 93.497MB/s 93.573MB/s BM_SendmsgTCP/0/256M 93.241MB/s 95.100MB/s 93.272MB/s BM_SendmsgTCP/1/1k 303.644MB/s 316.074MB/s 308.430MB/s BM_SendmsgTCP/1/2k 537.093MB/s 584.962MB/s 529.020MB/s BM_SendmsgTCP/1/4k 882.362MB/s 939.087MB/s 892.285MB/s BM_SendmsgTCP/1/8k 1.272GB/s 1.394GB/s 1.296GB/s BM_SendmsgTCP/1/16k 1.802GB/s 2.019GB/s 1.830GB/s BM_SendmsgTCP/1/32k 2.084GB/s 2.173GB/s 2.156GB/s BM_SendmsgTCP/1/64k 2.515GB/s 2.463GB/s 2.473GB/s BM_SendmsgTCP/1/128k 2.811GB/s 3.004GB/s 2.946GB/s BM_SendmsgTCP/1/256k 3.008GB/s 3.159GB/s 3.171GB/s BM_SendmsgTCP/1/512k 2.980GB/s 3.150GB/s 3.126GB/s BM_SendmsgTCP/1/1M 2.165GB/s 2.233GB/s 2.163GB/s BM_SendmsgTCP/1/2M 2.370GB/s 2.219GB/s 2.453GB/s BM_SendmsgTCP/1/4M 2.005GB/s 2.091GB/s 2.214GB/s BM_SendmsgTCP/1/8M 2.111GB/s 2.013GB/s 2.109GB/s BM_SendmsgTCP/1/16M 1.902GB/s 1.868GB/s 1.897GB/s BM_SendmsgTCP/1/32M 1.655GB/s 1.665GB/s 1.635GB/s BM_SendmsgTCP/1/64M 1.575GB/s 1.547GB/s 1.575GB/s BM_SendmsgTCP/1/128M 1.524GB/s 1.584GB/s 1.580GB/s BM_SendmsgTCP/1/256M 1.579GB/s 1.607GB/s 1.593GB/s PiperOrigin-RevId: 278940079
2019-11-04kokoro: run KVM syscall testsAndrei Vagin
We don't know how stable they are, so let's start with warning. PiperOrigin-RevId: 278484186
2019-11-04Add NETLINK_KOBJECT_UEVENT socket supportMichael Pratt
NETLINK_KOBJECT_UEVENT sockets send udev-style messages for device events. gVisor doesn't have any device events, so our sockets don't need to do anything once created. systemd's device manager needs to be able to create one of these sockets. It also wants to install a BPF filter on the socket. Since we'll never send any messages, the filter would never be invoked, thus we just fake it out. Fixes #1117 Updates #1119 PiperOrigin-RevId: 278405893
2019-11-01Add SO_PASSCRED support to netlink socketsMichael Pratt
Since we only supporting sending messages from the kernel, the peer is always the kernel, simplifying handling. There are currently no known users of SO_PASSCRED that would actually receive messages from gVisor, but adding full support is barely more work than stubbing out fake support. Updates #1117 Fixes #1119 PiperOrigin-RevId: 277981465
2019-11-01tests: don't use ASSERT_THAT after forkAndrei Vagin
PiperOrigin-RevId: 277965624
2019-10-30Store endpoints inside multiPortEndpoint in a sorted orderAndrei Vagin
It is required to guarantee the same order of endpoints after save/restore. PiperOrigin-RevId: 277598665
2019-10-30Clean up typos in test names.Dean Deng
PiperOrigin-RevId: 277572791
2019-10-29Update symlink traversal limit when resolving interpreter path.Dean Deng
When execveat is called on an interpreter script, the symlink count for resolving the script path should be separate from the count for resolving the the corresponding interpreter. An ELOOP error should not occur if we do not hit the symlink limit along any individual path, even if the total number of symlinks encountered exceeds the limit. Closes #574 PiperOrigin-RevId: 277358474
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