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2020-08-21[vfs] Allow mountpoint to be an existing non-directory.Ayush Ranjan
Unlike linux mount(2), OCI spec allows mounting on top of an existing non-directory file. PiperOrigin-RevId: 327914342
2020-08-21stateify: Fix pretty print not printing odd numbered fields.Ting-Yu Wang
PiperOrigin-RevId: 327902182
2020-08-21Provide fdReader/Writer for FileDescriptiongVisor bot
fdReader/Writer implements io.Reader/Writer so that they can be passed to Merkle tree library. PiperOrigin-RevId: 327901376
2020-08-21Move udp port exhaustion tests to a 'nogotsan' one.Ting-Yu Wang
It frequently times out under GoTSAN. PiperOrigin-RevId: 327894343
2020-08-21Internal change.gVisor bot
PiperOrigin-RevId: 327892274
2020-08-21Clarify seek behaviour for kernfs.GenericDirectoryFD.Rahat Mahmood
- Remove comment about GenericDirectoryFD not being compatible with dynamic directories. It is currently being used to implement dynamic directories. - Try to handle SEEK_END better than setting the offset to infinity. SEEK_END is poorly defined for dynamic directories anyways, so at least try make it work correctly for the static entries. Updates #1193. PiperOrigin-RevId: 327890128
2020-08-21Pass overlay credentials via context in copy up.Nicolas Lacasse
Some VFS operations (those which operate on FDs) get their credentials via the context instead of via an explicit creds param. For these cases, we must pass the overlay credentials on the context. PiperOrigin-RevId: 327881259
2020-08-21Make mounts ReadWrite first, then later change to ReadOnly.Nicolas Lacasse
This lets us create "synthetic" mountpoint directories in ReadOnly mounts during VFS setup. Also add context.WithMountNamespace, as some filesystems (like overlay) require a MountNamespace on ctx to handle vfs.Filesystem Operations. PiperOrigin-RevId: 327874971
2020-08-21Fix Inotify tests in open source.Zach Koopmans
The order of unlink events (dir event/file event) is undefined, so make tests accept both orderings. PiperOrigin-RevId: 327873316
2020-08-21Fix parent directory creation in CreateDeviceFile.Nicolas Lacasse
It was not properly creating recursive directories. Added tests for this case. Updates #1196 PiperOrigin-RevId: 327850811
2020-08-21Skip ElfInterpreterStaticTest for 5.X kernels.Zach Koopmans
gVisor emulates 4.6 kernel versions, and test doesn't work on 5.0 versions (observed on our Ubuntu18.04 image). Skip it. PiperOrigin-RevId: 327845037
2020-08-21Skip socket stress tests on KVM platform.Nicolas Lacasse
They time out. PiperOrigin-RevId: 327830892
2020-08-20[vfs] Create recursive dir creation util.Ayush Ranjan
Refactored the recursive dir creation util in runsc/boot/vfs.go to be more flexible. PiperOrigin-RevId: 327719100
2020-08-20Enable strace+debug in syscall testsFabricio Voznika
This is done to ease troubleshooting when tests fail. runsc logs are not stored when tests passe, so this will only affect failing tests and should not increase log storage too badly. PiperOrigin-RevId: 327717551
2020-08-20stateify: Fix afterLoad not being called for root objectTing-Yu Wang
PiperOrigin-RevId: 327711264
2020-08-20Add reference count checking to the fsimpl/host package.Dean Deng
Includes a minor refactor for inode construction. Updates #1486. PiperOrigin-RevId: 327694933
2020-08-20Consistent precondition formattingMichael Pratt
Our "Preconditions:" blocks are very useful to determine the input invariants, but they are bit inconsistent throughout the codebase, which makes them harder to read (particularly cases with 5+ conditions in a single paragraph). I've reformatted all of the cases to fit in simple rules: 1. Cases with a single condition are placed on a single line. 2. Cases with multiple conditions are placed in a bulleted list. This format has been added to the style guide. I've also mentioned "Postconditions:", though those are much less frequently used, and all uses already match this style. PiperOrigin-RevId: 327687465
2020-08-20Skip listening TCP ports when trying to bind a free port.Bhasker Hariharan
PiperOrigin-RevId: 327686558
2020-08-20Only use the NextHeader value of the first IPv6 fragment extension header.Arthur Sfez
As per RFC 8200 Section 4.5: The Next Header field of the last header of the Per-Fragment headers is obtained from the Next Header field of the first fragment's Fragment header. Test: - pkg/tcpip/network/ipv6:ipv6_test - pkg/tcpip/network/ipv4:ipv4_test - pkg/tcpip/network/fragmentation:fragmentation_test Updates #2197 PiperOrigin-RevId: 327671635
2020-08-20Use a explicit random src for RandomID.Bhasker Hariharan
PiperOrigin-RevId: 327659759
2020-08-20Fix tabs in lock-ordering doc.Nicolas Lacasse
PiperOrigin-RevId: 327654207
2020-08-19Move boot.Config to its own packageFabricio Voznika
Updates #3494 PiperOrigin-RevId: 327548511
2020-08-19Remove path walk from localFile.MknodFabricio Voznika
Replace mknod call with mknodat equivalent to protect against symlink attacks. Also added Mknod tests. Remove goferfs reliance on gofer to check for file existence before creating a synthetic entry. Updates #2923 PiperOrigin-RevId: 327544516
2020-08-19Run bazel build before deleting cached gopath filesFabricio Voznika
bazel creates sysmlink to the cache on the first invokation. On a new clone, there are no symlink, thus `rm -rf bazel-bin/gopath` has no effect. Call `bazel build something` first, then delete cached gopath. PiperOrigin-RevId: 327536044
2020-08-19Fix return for rseq_test.Zach Koopmans
Accept 128 + SIGNAL as well as SIGNAL as valid returns for fork/exec tests. Also, make changes so that test compiles in opensource. Test had compile errors on latest Ubuntu 16.04 image with updated bazel to 3.4.0 (as well as base 2.0) used for Kokoro tests. PiperOrigin-RevId: 327510310
2020-08-19ip6tables: move ipv4-specific logic into its own fileKevin Krakauer
A later change will introduce the equivalent IPv6 logic. #3549 PiperOrigin-RevId: 327499064
2020-08-19ip6tables: test initial stateKevin Krakauer
Tests that we have the correct initial (empty) state for ip6tables. #3549 PiperOrigin-RevId: 327477657
2020-08-19Remove use of channels from p9.connState legacy transport.Jamie Liu
- Remove sendDone, which currently does nothing whatsoever (errors sent to the channel are completely unused). Instead, have request handlers log errors they get from p9.send() inline. - Replace recvOkay and recvDone with recvMu/recvIdle/recvShutdown. In addition to being slightly clearer (IMO), this eliminates the p9.connState.service() goroutine, significantly reducing the overhead involved in passing connection receive access between goroutines (from buffered chan send/recv + unbuffered chan send/recv to just a mutex unlock/lock). PiperOrigin-RevId: 327476755
2020-08-19Change runtimeoptions proto handling.Fabricio Voznika
Stolen from cl/327337408 (ascannell is OOO) PiperOrigin-RevId: 327475423
2020-08-19Skip ECN test for native/linux tests.Zach Koopmans
Skip check for ECN bits in native/linux tests. General advice for the ECN field is to leave the setting to the kernel, so behavior of the test is undefined for different kernels. http://www.masterraghu.com/subjects/np/introduction/unix_network_programming_v1.3/ch07lev1sec6.html PiperOrigin-RevId: 327451414
2020-08-19Return appropriate errors when file locking is unsuccessful.Dean Deng
test_eintr now passes in the Python runtime tests. Updates #3515. PiperOrigin-RevId: 327441081
2020-08-18[vfs] Allow offsets for special files other than regular files.Ayush Ranjan
Some character and block devices can be seekable. So allow their FD to maintain file offset. PiperOrigin-RevId: 327370684
2020-08-18Get rid of kernfs.Inode.Destroy.Dean Deng
This interface method is unneeded. PiperOrigin-RevId: 327370325
2020-08-18Move ERESTART* error definitions to syserror package.Dean Deng
This is needed to avoid circular dependencies between the vfs and kernel packages. PiperOrigin-RevId: 327355524
2020-08-18Don't set atime if mount is readonlyFabricio Voznika
Updates #1035 PiperOrigin-RevId: 327351475
2020-08-18Add more information to panic when device ID don't matchFabricio Voznika
PiperOrigin-RevId: 327351357
2020-08-18Fix return value in shm_test for opensourceZach Koopmans
Some machines return 128 + signal for failures. Accept that as a valid result. PiperOrigin-RevId: 327326113
2020-08-18RACK: Create a new list for segments.Nayana Bidari
RACK requires the segments to be in the order of their transmission or retransmission times. This cl creates a new list and moves the retransmitted segments to the end of the list. PiperOrigin-RevId: 327325153
2020-08-18Avoid holding locks when opening files in VFS2.Jamie Liu
Fixes #3243, #3521 PiperOrigin-RevId: 327308890
2020-08-18Return EROFS if mount is read-onlyFabricio Voznika
PiperOrigin-RevId: 327300635
2020-08-18Fix timeval for Socket testZach Koopmans
tv_usec field should be a multiple of 4K to pass in open source on linux/native, so make it one. PiperOrigin-RevId: 327288405
2020-08-18Wait for all p9 handlers to complete before server shutdown.Jamie Liu
... including those invoked via flipcall. PiperOrigin-RevId: 327283194
2020-08-18[vfs2] Implement /proc/sys/net/ipv4/tcp_rmem and /proc/sys/net/ipv4/tcp_wmem.Ayush Ranjan
Updates #1035 PiperOrigin-RevId: 327253907
2020-08-18Fix readahead test for opensource.Zach Koopmans
Skip InvalidOffset and InvalidLength for Linux as the test is invalid for later Kernel versions. Add UnsupportedFile test as this check is in all kernel versions. PiperOrigin-RevId: 327248035
2020-08-18Fix return value for MMap Tests in OpenSourceZach Koopmans
Some systems return 128 + errno instead of just errno, which is the case here. PiperOrigin-RevId: 327247836
2020-08-17Add a skeleton for verity file systemgVisor bot
PiperOrigin-RevId: 327123477
2020-08-17Stop masking the IO error in handleIOError.Nicolas Lacasse
PiperOrigin-RevId: 327123331
2020-08-17Add Verify in merkle tree librarygVisor bot
Verify checks input data against the merkle tree, and compares the root hash with expectation. PiperOrigin-RevId: 327116711
2020-08-17Fix AllSocketPairTest for open source.Zach Koopmans
Setting timeouts for sockets on GCP images (debian) for usecs only respects multiples of 4K. Set the test with a multiple of 4K with a comment. PiperOrigin-RevId: 327093848
2020-08-17[vfs] Do O_DIRECTORY check after resolving symlinks.Ayush Ranjan
Fixes python runtime test test_glob. Updates #3515 We were checking is the to-be-opened dentry is a dir or not before resolving symlinks. We should check that after resolving symlinks. This was preventing us from opening a symlink which pointed to a directory with O_DIRECTORY. Also added this check in tmpfs and removed a duplicate check. PiperOrigin-RevId: 327085895
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