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2020-07-08Merge release-20200622.1-78-gefa2615eb (automated)gVisor bot
2020-07-07[vfs2] Remove VFS1 usage in VDSO.Ayush Ranjan
Removed VDSO dependency on VFS1. Resolves #2921 PiperOrigin-RevId: 320122176
2020-07-08Merge release-20200622.1-77-g5e05950c1 (automated)gVisor bot
2020-07-07Deflake exec test.Jamie Liu
- Only use MAXSYMLINKS/2+1 symlinks for each of the interpreter and script paths in SymlinkLimitRefreshedForInterpreter to tolerate cases where the original paths (/tmp, /bin, or /bin/echo) themselves contain symlinks. - Ensure that UnshareFiles performs execve immediately after clone(CLONE_VFORK) (no heap allocation for ExecveArray/RunfilesPath). - Use lstat() rather than stat() for the existence check in fs_util's Exists; the latter will fail if the symlink target does not exist, even if the symlink does. PiperOrigin-RevId: 320110156
2020-07-07Merge release-20200622.1-76-g76c7bc51b (automated)gVisor bot
2020-07-07Set IPv4 ID on all non-atomic datagramsTony Gong
RFC 6864 imposes various restrictions on the uniqueness of the IPv4 Identification field for non-atomic datagrams, defined as an IP datagram that either can be fragmented (DF=0) or is already a fragment (MF=1 or positive fragment offset). In order to be compliant, the ID field is assigned for all non-atomic datagrams. Add a TCP unit test that induces retransmissions and checks that the IPv4 ID field is unique every time. Add basic handling of the IP_MTU_DISCOVER socket option so that the option can be used to disable PMTU discovery, effectively setting DF=0. Attempting to set the sockopt to anything other than disabled will fail because PMTU discovery is currently not implemented, and the default behavior matches that of disabled. PiperOrigin-RevId: 320081842
2020-07-07Merge release-20200622.1-75-g7e4d2d63e (automated)gVisor bot
2020-07-07icmp: When setting TransportHeader, remove from the Data portion.Ting-Yu Wang
The current convention is when a header is set to pkt.XxxHeader field, it gets removed from pkt.Data. ICMP does not currently follow this convention. PiperOrigin-RevId: 320078606
2020-07-07Merge release-20200622.1-74-g10930189c (automated)gVisor bot
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
2020-07-07Merge release-20200622.1-73-gc8aab5cbe (automated)gVisor bot
2020-07-07Merge pull request #3149 from wietsevenema:patch-1gVisor bot
PiperOrigin-RevId: 320062822
2020-07-07README.md: Commpatibility > CompatibilityWietse Venema
2020-07-07Merge release-20200622.1-71-ge227450dc (automated)gVisor bot
2020-07-06Call fdnotifier.UpdateFD() from fsimpl/gofer.specialFileFD.Jamie Liu
The fdnotifier package provides an API to a thread that continually epolls arbitrary host FDs. The set of events polled for each host FD is (intended to be) all events for which a waiter.Entry has expressed interest, as returned by waiter.Queue.Events() for the waiter.Queue registered to the given host FD. When the set of events changes (due to a change in the set of registered waiter.Entries), the mutator must call fdnotifier.UpdateFD() to recalculate the new event set and propagate it to the epoll FD. PiperOrigin-RevId: 319924719
2020-07-07Merge release-20200622.1-70-g937912a48 (automated)gVisor bot
2020-07-06Ensure sync is called for readonly fileFabricio Voznika
Calling sync on a readonly file flushes metadata that may have been modified, like last access time. Updates #1198 PiperOrigin-RevId: 319888290
2020-07-07Merge release-20200622.1-69-gb0f656184 (automated)gVisor bot
2020-07-06Add support for SO_RCVBUF/SO_SNDBUF for AF_PACKET sockets.Bhasker Hariharan
Updates #2746 PiperOrigin-RevId: 319887810
2020-07-06Merge release-20200622.1-68-g15c56d92d (automated)gVisor bot
2020-07-06Fix NonBlockingWrite3 not writing b3 if b2 is zero-length.Ting-Yu Wang
PiperOrigin-RevId: 319882171
2020-07-06Merge release-20200622.1-67-gbd43368f4 (automated)gVisor bot
2020-07-06Add inode number to synthetic dentriesFabricio Voznika
Reserve the MSB from ino for synthetic dentries to prevent conflict with regular dentries. Log warning in case MSB is set for regular dentries. Updates #1487 PiperOrigin-RevId: 319869858
2020-07-06Merge release-20200622.1-66-g1e5b0a973 (automated)gVisor bot
2020-07-06Merge release-20200622.1-65-g47bffa544 (automated)gVisor bot
2020-07-06Shard some slow tests.Ting-Yu Wang
stack_x_test: 2m -> 20s tcp_x_test: 80s -> 25s PiperOrigin-RevId: 319828101
2020-07-06Merge pull request #3110 from craig08:add-missing-ICRNLgVisor bot
PiperOrigin-RevId: 319827554
2020-07-06Merge release-20200622.1-63-g043e5dddd (automated)gVisor bot
2020-07-06Remove dependency on pkg/binaryTamir Duberstein
PiperOrigin-RevId: 319770124
2020-07-05Merge release-20200622.1-62-g0c1353866 (automated)gVisor bot
2020-07-05Add wakers synchronouslyTamir Duberstein
Avoid a race where an arbitrary goroutine scheduling delay can cause the processor to miss events and hang indefinitely. Reduce allocations by storing processors by-value in the dispatcher, and by using a single WaitGroup rather than one per processor. PiperOrigin-RevId: 319665861
2020-07-04Merge release-20200622.1-61-g5ac34386a (automated)gVisor bot
2020-07-03Improve failure messageTamir Duberstein
Currently this test produces an error resembling tcp_zero_window_probe_retransmit_test.go:92: zero probe came sooner interval 3200179405 probe 4 which is approximately useless. PiperOrigin-RevId: 319572263
2020-07-04Merge release-20200622.1-60-g418db67e2 (automated)gVisor bot
2020-07-03Update build rule to appease deprecationTamir Duberstein
Before this change, running packetimpact tests produces: parameter 'direct' must contain a list of elements, and may no longer accept a depset. The deprecated behavior may be temporarily re-enabled by setting --incompatible_disable_depset_inputs=false The positional parameter to depset has been changed to mean `direct` rather than its previous meaning of `items`. The documentation[0] explains: A positional parameter distinct from other parameters for legacy support. If --incompatible_disable_depset_items is false, this parameter serves as the value of items. If --incompatible_disable_depset_items is true, this parameter serves as the value of direct. See the documentation for these parameters for more details. [0] https://docs.bazel.build/versions/master/skylark/lib/globals.html PiperOrigin-RevId: 319555138
2020-07-02Merge release-20200622.1-59-g6c099d830 (automated)gVisor bot
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
2020-07-02Merge release-20200622.1-58-g514955c1a (automated)gVisor bot
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
2020-07-02Merge release-20200622.1-57-g52b44719d (automated)gVisor bot
2020-07-01[vfs2][gofer] Update file size to 0 on O_TRUNCAyush Ranjan
Some Open:TruncateXxx syscall tests were failing because the file size was not being updated when the file was opened with O_TRUNC. Fixes Truncate tests in test/syscalls:open_test_runsc_ptrace_vfs2. Updates #2923 PiperOrigin-RevId: 319340127
2020-07-02Merge release-20200622.1-56-g3b26d2121 (automated)gVisor bot
2020-07-01Remove maxSendBufferSize from vfs2.Dean Deng
Complements cl/315991648. PiperOrigin-RevId: 319327853
2020-07-02Merge release-20200622.1-55-g65d998555 (automated)gVisor bot
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
2020-07-01Merge release-20200622.1-54-g31b27adf9 (automated)gVisor bot
2020-07-01TCP receive should block when in SYN-SENT state.Mithun Iyer
The application can choose to initiate a non-blocking connect and later block on a read, when the endpoint is still in SYN-SENT state. PiperOrigin-RevId: 319311016
2020-07-01Merge release-20200622.1-53-ge4b208760 (automated)gVisor bot
2020-07-01Use directory fds in sticky test to avoid permission issues.Dean Deng
After we change credentials, it is possible that we no longer have access to the sticky directory where we are trying to delete files. Use an open fd so this is not an issue. PiperOrigin-RevId: 319306255
2020-07-01Merge release-20200622.1-52-g6a90c88b9 (automated)gVisor bot