The test is flaky in cooperative S/R mode because TCP timers are not restored
across a S/R. This can cause the TCPLinger2 timer to not fire. This change
disables S/R before setting the TCP_LINGER2 timeout.
PiperOrigin-RevId: 304430536
A socket mount where anonymous sockets will reside is added to the
VirtualFilesystem. Socketfs is built on top of kernfs.
Updates #1476, #1478, #1484, #1485.
PiperOrigin-RevId: 304095251
In cl/302130790, we started using a temp directory which is provided by bazel.
By default, a test process has enough permissions to open it, but there is not
any guarantee that it still will be able to do this after changing credentials.
PiperOrigin-RevId: 302702337
- When setting up the virtual filesystem, mount a host.filesystem to contain
all files that need to be imported.
- Make read/preadv syscalls to the host in cases where preadv2 may not be
supported yet (likewise for writing).
- Make save/restore functions in kernel/kernel.go return early if vfs2 is
enabled.
PiperOrigin-RevId: 300922353
Adds an oom_score_adj and oom_score proc file stub. oom_score_adj accepts
writes of values -1000 to 1000 and persists the value with the task. New tasks
inherit the parent's oom_score_adj.
oom_score is a read-only stub that always returns the value '0'.
Issue #202
PiperOrigin-RevId: 299245355
The benchmark_filter options accepts regex-s, but
the gtest-filter option accepts shell-like wildcards.
Fixes#2034
Signed-off-by: Andrei Vagin <avagin@gmail.com>
The error was introduced in the merge of PR #1471.
Some codes are missing when adding bazel select_arch
command to the test/syscall/linux/BUILD file.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I8cae3f4ae78c2e14671f3ac6e7361dc2806d9305
/dev/net/tun does not currently work with hostinet. This has caused some
program starts failing because it thinks the feature exists.
PiperOrigin-RevId: 297876196
TCP/IP will work with netstack networking. hostinet doesn't work, and sockets
will have the same behavior as it is now.
Before the userspace is able to create device, the default loopback device can
be used to test.
/proc/net and /sys/net will still be connected to the root network stack; this
is the same behavior now.
Issue #1833
PiperOrigin-RevId: 296309389
Added the ability to get/set the IP_RECVTCLASS socket option on UDP endpoints.
If enabled, traffic class from the incoming Network Header passed as ancillary
data in the ControlMessages.
Adding Get/SetSockOptBool to decrease the overhead of getting/setting simple
options. (This was absorbed in a CL that will be landing before this one).
Test:
* Added unit test to udp_test.go that tests getting/setting as well as
verifying that we receive expected TOS from incoming packet.
* Added a syscall test for verifying getting/setting
* Removed test skip for existing syscall test to enable end to end test.
PiperOrigin-RevId: 295840218
- Move shared helpers V4Multicast and V4Broadcast to socket_test_util
- Add unnamed namespace so socket_ipv4_tcp_unbound_external_networking_test.cc
and socket_ipv4_udp_unbound_external_networking_test.cc can be compiled
together
- Add test files to "exports_files" so they can be included by Fuchsia's syscall
test setup
PiperOrigin-RevId: 293880429
From RFC 793 s3.9 p58 Event Processing:
If RECEIVE Call arrives in CLOSED state and the user has access to such a
connection, the return should be "error: connection does not exist"
Fixes#1598
PiperOrigin-RevId: 293494287
Tests 65k connection attempts on common types of sockets to check for port
leaks.
Also fixes a bug where dual-stack sockets wouldn't properly re-queue
segments received while closing.
PiperOrigin-RevId: 293241166
* Tests are picked for a shard differently. It now picks one test from each
block, instead of picking the whole block. This makes the same kind of tests
spreads across different shards.
* Reduce the number of connect() calls in TCPListenClose.
PiperOrigin-RevId: 293019281
If the support is Ignored, then the call is still executed. We
simply rely on it to fall through to the int3. Therefore, we
must also bail on the vendor check.
PiperOrigin-RevId: 292620558
This avoids conflicting definitions of GetSocketPairs() in outer namespace when
multiple such cc files are complied for one binary.
PiperOrigin-RevId: 292420885
When sending a RST on shutdown we need to double check the
state after acquiring the work mutex as the endpoint could
have transitioned out of a connected state from the time
we checked it and we acquired the workMutex.
I added two tests but sadly neither reproduce the panic. I am
going to leave the tests in as they are good to have anyway.
PiperOrigin-RevId: 292393800
Splice must not allow negative offsets. Writes also must not allow offset +
size to overflow int64. Reads are similarly broken, but not just in splice
(b/148095030).
Reported-by: syzbot+0e1ff0b95fb2859b4190@syzkaller.appspotmail.com
PiperOrigin-RevId: 292361208
Special files can have additional requirements for granularity.
For example, read from eventfd returns EINVAL if a size is less 8 bytes.
Reported-by: syzbot+3905f5493bec08eb7b02@syzkaller.appspotmail.com
PiperOrigin-RevId: 292002926
Test command:
$ ip route get 1.1.1.1
Fixes: #1099
Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com>
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1121 from tanjianfeng:fix-1099 e6919f3d4ede5aa51a48b3d2be0d7a4b482dd53d
PiperOrigin-RevId: 291990716
And Type* over Type *. This is basically a whitespace only change.
gVisor code already prefers left-alignment of pointers and references, but
clang-format formats for consistency with the majority of a file, and some
files leaned the wrong way. This is a one-time pass to make us completely
conforming.
Autogenerated with:
$ find . \( -name "*.cc" -or -name "*.c" -or -name "*.h" \) \
| xargs clang-format -i -style="{BasedOnStyle: Google, \
DerivePointerAlignment: false, PointerAlignment: Left}"
PiperOrigin-RevId: 291972421
Note that these simply will use the same logic as getxattr and setxattr, which
is not yet implemented for most filesystems.
PiperOrigin-RevId: 290800960
These can remain disabled until we actually support extended attributes.
The following modifications were also made:
1. Disable save/restore on tests that change file permissions. Restore will not
work properly for these tests, since it will try to open the file with
read-write after it has been read- or write-only.
2. Change user.abc to user.test.
PiperOrigin-RevId: 290123941
All inbound segments for connections in ESTABLISHED state are delivered to the
endpoint's queue but for every segment delivered we also queue the endpoint for
processing to a selected processor. This ensures that when there are a large
number of connections in ESTABLISHED state the inbound packets are all handled
by a small number of goroutines and significantly reduces the amount of work the
goscheduler has to perform.
We let connections in other states follow the current path where the
endpoint's goroutine directly handles the segments.
Updates #231
PiperOrigin-RevId: 289728325
This test fails on ubuntu 18.04 because preadv2 for some reason returns
EOPNOTSUPP instead of EINVAL. Instead of root-causing the failure, I'm dropping
the flag in the preadv2 call since it isn't under test in this scenario.
PiperOrigin-RevId: 289188358
This change calls a new Truncate method on the EndpointReader in RecvMsg for
both netlink and unix sockets. This allows readers such as sockets to peek at
the length of data without actually reading it to a buffer.
Fixes#993#1240
PiperOrigin-RevId: 288800167
The write tests are fitted to Linux-specific behavior, but it is not
well-specified. Tweak the tests to allow for both acceptable outcomes.
PiperOrigin-RevId: 288606386
Added the ability to get/set the IP_RECVTOS socket option on UDP endpoints. If
enabled, TOS from the incoming Network Header passed as ancillary data in the
ControlMessages.
Test:
* Added unit test to udp_test.go that tests getting/setting as well as
verifying that we receive expected TOS from incoming packet.
* Added a syscall test
PiperOrigin-RevId: 287029703
This change is needed to be compatible with the Linux kernel.
There is no glibc wrapper for the futex system call, so it is easy to
make a mistake and call syscall(__NR_futex, FUTEX_WAKE, addr) without
the fourth argument. This works on Linux, because it wakes one waiter
even if val is nonpositive.
PiperOrigin-RevId: 286494396
This test suite has existed for quite a while and has become kind of messy.
Various tests can be joined together by parameterizing.
PiperOrigin-RevId: 286482240
When listen(2) is called on an unbound socket, the socket is
automatically bound to a random free port with the local address
set to INADDR_ANY.
PiperOrigin-RevId: 286305906
This avoids conflicting definitions of GetSocketPairs() in outer namespace when
multiple such cc files are complied for one binary.
PiperOrigin-RevId: 286243045
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
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
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
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
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
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
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
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
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
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
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
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
* 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
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
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
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
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 #1117Fixes#1119
PiperOrigin-RevId: 277981465
Tamir Duberstein
gVisor bot
Dean Deng
Bhasker Hariharan
Haibo Xu
Fabricio Voznika
Andrei Vagin
Ian Lewis
Ting-Yu Wang
Eyal Soha
Andrei Vagin
Adin Scannell
Bin Lu
Nayana Bidari
Jay Zhuang
Zach Koopmans
Nicolas Lacasse
Ian Gudger
Michael Pratt
Jianfeng Tan
Ryan Heacock
Brad Burlage
Kevin Krakauer