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2020-07-24Enable open testAyush Ranjan
Updates #2923 PiperOrigin-RevId: 322953552
2020-07-23Port sendfile to vfs2.Nicolas Lacasse
And do some refactoring of the wait logic in sendfile/splice/tee. Updates #1035 #2923 PiperOrigin-RevId: 322815521
2020-07-09Gate FUSE behind a runsc flagRidwan Sharif
This change gates all FUSE commands (by gating /dev/fuse) behind a runsc flag. In order to use FUSE commands, use the --fuse flag with the --vfs2 flag. Check if FUSE is enabled by running dmesg in the sandbox.
2020-07-07Fix mknod and inotify syscall testAyush Ranjan
This change fixes a few things: - creating sockets using mknod(2) is supported via vfs2 - fsgofer can create regular files via mknod(2) - mode = 0 for mknod(2) will be interpreted as regular file in vfs2 as well Updates #2923 PiperOrigin-RevId: 320074267
2020-07-01Update preadv2/pwritev2 flag handling in vfs2.Dean Deng
We do not support RWF_SYNC/RWF_DSYNC and probably shouldn't silently accept them, since the user may incorrectly believe that we are synchronizing I/O. Remove the pwritev2 test verifying that we support these flags. gvisor.dev/issue/2601 is the tracking bug for deciding which RWF_.* flags we need and supporting them. Updates #2923, #2601. PiperOrigin-RevId: 319351286
2020-07-01[vfs2][gofer] Fix mmap syscall test.Ayush Ranjan
We were not invalidating mappings when the file size changed in shared mode. Enabled the syscall test for vfs2. Updates #2923 PiperOrigin-RevId: 319346569
2020-07-01Port vfs1 implementation of sync_file_range to vfs2.Dean Deng
Currently, we always perform a full-file sync which could be extremely expensive for some applications. Although vfs1 did not fully support sync_file_range, there were some optimizations that allowed us skip some unnecessary write-outs. Updates #2923, #1897. PiperOrigin-RevId: 319324213
2020-07-01Port fallocate to VFS2.Zach Koopmans
PiperOrigin-RevId: 319283715
2020-07-01Complete async signal delivery support in vfs2.Dean Deng
- Support FIOASYNC, FIO{SET,GET}OWN, SIOC{G,S}PGRP (refactor getting/setting owner in the process). - Unset signal recipient when setting owner with pid == 0 and valid owner type. Updates #2923. PiperOrigin-RevId: 319231420
2020-06-27Support sticky bit in vfs2.Dean Deng
Updates #2923. PiperOrigin-RevId: 318648128
2020-06-26IPv6 raw sockets. Needed for ip6tables.Kevin Krakauer
IPv6 raw sockets never include the IPv6 header. PiperOrigin-RevId: 318582989
2020-06-24Fix procfs bugs in vfs2.Dean Deng
- Support writing on proc/[pid]/{uid,gid}map - Return EIO for writing to static files. Updates #2923. PiperOrigin-RevId: 318188503
2020-06-24Port /dev/net/tun device to VFS2.Nicolas Lacasse
Updates #2912 #1035 PiperOrigin-RevId: 318162565
2020-06-23Port /dev/tty device to VFS2.Nicolas Lacasse
Support is limited to the functionality that exists in VFS1. Updates #2923 #1035 PiperOrigin-RevId: 317981417
2020-06-23Port readahead to VFS2.Nicolas Lacasse
It preserves the same functionality (almost none) as in VFS1. Updates #2923 #1035 PiperOrigin-RevId: 317943522
2020-06-22Check for invalid trailing / when traversing path in gofer OpenAt.Dean Deng
Updates #2923. PiperOrigin-RevId: 317700049
2020-06-19Enable passing vfs2 tests.Dean Deng
I forgot to update getdents earlier. Several thousand runs of the fsync and proc_net_unix tests all passed as well. Updates #2923. PiperOrigin-RevId: 317415488
2020-06-19Port fadvise64 to vfs2.Dean Deng
Like vfs1, we have a trivial implementation that ignores all valid advice. Updates #2923. PiperOrigin-RevId: 317349505
2020-06-19Fix vfs2 handling of preadv2/pwritev2 flags.Dean Deng
Check for unsupported flags, and silently support RWF_HIPRI by doing nothing. From pkg/abi/linux/file.go: "gVisor does not implement the RWF_HIPRI feature, but the flag is accepted as a valid flag argument for preadv2/pwritev2." Updates #2923. PiperOrigin-RevId: 317330631
2020-06-19Don't adjust parent link count if we replace a child dir with another.Dean Deng
Updates #2923. PiperOrigin-RevId: 317314460
2020-06-19Fix synthetic file bugs in gofer fs.Dean Deng
Always check if a synthetic file already exists at a location before creating a file there, and do not try to delete synthetic gofer files from the remote fs. This fixes runsc_ptrace socket tests that create/unlink synthetic, named socket files. Updates #2923. PiperOrigin-RevId: 317293648
2020-06-18Fix vfs2 tmpfs link permission checks.Dean Deng
Updates #2923. PiperOrigin-RevId: 317246916
2020-06-18Enable more VFS2 syscall testsFabricio Voznika
Updates #2923 PiperOrigin-RevId: 317185798
2020-06-15Correctly set the test VFS environment variable.Rahat Mahmood
Also fix test bugs uncovered now that they aren't silently skipped on VFS2. Updates #1487. PiperOrigin-RevId: 316415807
2020-06-05Fix error code returned due to Port exhaustion.Bhasker Hariharan
For TCP sockets gVisor incorrectly returns EAGAIN when no ephemeral ports are available to bind during a connect. Linux returns EADDRNOTAVAIL. This change fixes gVisor to return the correct code and adds a test for the same. This change also fixes a minor bug for ping sockets where connect() would fail with EINVAL unless the socket was bound first. Also added tests for testing UDP Port exhaustion and Ping socket port exhaustion. PiperOrigin-RevId: 314988525
2020-06-01Enable VFS2 to runsc syscall testsFabricio Voznika
Updates #1487 PiperOrigin-RevId: 314271995
2020-03-05Stub oom_score_adj and oom_score.Ian Lewis
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
2020-02-28Hide /dev/net/tun when using hostinet.Ting-Yu Wang
/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
2020-02-21Implement tap/tun device in vfs.Ting-Yu Wang
PiperOrigin-RevId: 296526279
2020-02-20Initial network namespace support.gVisor bot
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
2020-02-19Add basic microbenchmarks.Adin Scannell
PiperOrigin-RevId: 296104390
2020-02-04Add socket connection stress test.Ian Gudger
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
2020-02-04Add support for sentry internal pipe for gofer mountsFabricio Voznika
Internal pipes are supported similarly to how internal UDS is done. It is also controlled by the same flag. Fixes #1102 PiperOrigin-RevId: 293150045
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-17Convert EventMask to uint64Andrei Vagin
It is used for signalfd where the maximum signal is 64. PiperOrigin-RevId: 290331008
2020-01-16Disable xattr tests.Dean Deng
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
2019-12-11Add syscall tests for getxattr and setxattr.Dean Deng
Support for getxattr and setxattr are in subsequent commits. PiperOrigin-RevId: 285088817
2019-12-09Add 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
2019-11-07Add 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
2019-11-04Add 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
2019-10-18Cleanup host UDS supportMichael Pratt
This change fixes several issues with the fsgofer host UDS support. Notably, it adds support for SOCK_SEQPACKET and SOCK_DGRAM sockets [1]. It also fixes unsafe use of unet.Socket, which could cause a panic if Socket.FD is called when err != nil, and calls to Socket.FD with nothing to prevent the garbage collector from destroying and closing the socket. A set of tests is added to exercise host UDS access. This required extracting most of the syscall test runner into a library that can be used by custom tests. Updates #235 Updates #1003 [1] N.B. SOCK_DGRAM sockets are likely not particularly useful, as a server can only reply to a client that binds first. We don't allow bind, so these are unlikely to be used. PiperOrigin-RevId: 275558502
2019-10-07Implement IP_TTL.Ian Gudger
Also change the default TTL to 64 to match Linux. PiperOrigin-RevId: 273430341
2019-10-02Increase itimer test timeoutMichael Pratt
https://github.com/google/gvisor/commit/dd69b49ed1103bab82a6b2ac95221b89b46f3376 makes this test take longer. PiperOrigin-RevId: 272535892
2019-09-24Stub out readahead implementation.Adin Scannell
Closes #261 PiperOrigin-RevId: 270973347
2019-09-19Job control: controlling TTYs and foreground process groups.Kevin Krakauer
Adresses a deadlock with the rolled back change: https://github.com/google/gvisor/commit/b6a5b950d28e0b474fdad160b88bc15314cf9259 Creating a session from an orphaned process group was causing a lock to be acquired twice by a single goroutine. This behavior is addressed, and a test (OrphanRegression) has been added to pty.cc. Implemented the following ioctls: - TIOCSCTTY - set controlling TTY - TIOCNOTTY - remove controlling tty, maybe signal some other processes - TIOCGPGRP - get foreground process group. Also enables tcgetpgrp(). - TIOCSPGRP - set foreground process group. Also enabled tcsetpgrp(). Next steps are to actually turn terminal-generated control characters (e.g. C^c) into signals to the proper process groups, and to send SIGTTOU and SIGTTIN when appropriate. PiperOrigin-RevId: 270088599
2019-09-04Run proc_net tests.Ian Gudger
PiperOrigin-RevId: 267280086
2019-09-03Impose order on test scripts.Adin Scannell
The simple test script has gotten out of control. Shard this script into different pieces and attempt to impose order on overall test structure. This change helps lay some of the foundations for future improvements. * The runsc/test directories are moved into just test/. * The runsc/test/testutil package is split into logical pieces. * The scripts/ directory contains new top-level targets. * Each test is now responsible for building targets it requires. * The install functionality is moved into `runsc` itself for simplicity. * The existing kokoro run_tests.sh file now just calls all (can be split). After this change is merged, I will create multiple distinct workflows for Kokoro, one for each of the scripts currently targeted by `run_tests.sh` today, which should dramatically reduce the time-to-run for the Kokoro tests, and provides a better foundation for further improvements to the infrastructure. PiperOrigin-RevId: 267081397
2019-08-30Automated rollback of changelist 261387276Bhasker Hariharan
PiperOrigin-RevId: 266491264
2019-08-29Implement /proc/net/udp.Rahat Mahmood
PiperOrigin-RevId: 266229756
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