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2020-09-17Add VFS2 overlay support in runscFabricio Voznika
All tests under runsc are passing with overlay enabled. Updates #1487, #1199 PiperOrigin-RevId: 332181267
2020-09-16Merge pull request #3934 from avagin:feature/fusegVisor bot
PiperOrigin-RevId: 332122081
2020-09-16Implement OpenAt() for verity fsChong Cai
OpenAt() for verity fs is implemented by opening both the target file or directory and the corresponding Merkle tree file in the underlying file system. Generally they are only open for read. In allowRuntimeEnable mode, the Merkle tree file is also open for write. PiperOrigin-RevId: 332116423
2020-09-16Cleanup device name confusion in packetimpact testbenchZeling Feng
There are two device names on the test net. - The sniffer/injector device which is always a linux device. Only the testbench library is interested in this device. - The device which is on the DUT. It happens to be the same device as the former if DUT is linux. An individual test might be interested in this device if the test cares about the device name. PiperOrigin-RevId: 332112968
2020-09-16Automated rollback of changelist 329526153Nayana Bidari
PiperOrigin-RevId: 332097286
2020-09-16Bind loopback subnets' lifetime to perm addressGhanan Gowripalan
The lifetime of addreses in a loopback interface's associated subnets should be bound to their respective permanent addresses. This change also fixes a race when the stack attempts to get an IPv4 rereferencedNetworkEndpoint for an address in an associated subnet on a loopback interface. Before this change, the stack would only check if an IPv4 address is contained in an associated subnet while holding a read lock but wouldn't do this same check after releasing the read lock for a write lock to create a temporary address. This may cause the stack to bind the lifetime of the address to a new (temporary) endpoint instead of the associated subnet's permanent address. Test: integration_test.TestLoopbackSubnetLifetimeBoundToAddr PiperOrigin-RevId: 332094719
2020-09-16Implement PRead for verity fsChong Cai
PRead is implemented by read from the underlying file in blocks, and verify each block. The verified contents are saved into the output buffer. PiperOrigin-RevId: 332092267
2020-09-16Gracefully translate unknown errno.Ting-Yu Wang
Neither POSIX.1 nor Linux defines an upperbound for errno. PiperOrigin-RevId: 332085017
2020-09-16[runtime tests] Add documentation.Ayush Ranjan
Added a README describing what these tests are, how they work and how to run them locally. Also reorganized the exclude files into a directory. PiperOrigin-RevId: 332079697
2020-09-16Merge pull request #3893 from lubinszARM:pr_n1_03gVisor bot
PiperOrigin-RevId: 332069743
2020-09-16fuse: fix data race in fusefs Release()Jinmou Li
fix #3956
2020-09-16fuse: fix FUSE_RELEASE reply handlingJinmou Li
fix #3963
2020-09-16FUSE readdir test fix ino initializationJinmou Li
2020-09-16Update fuse.md design doc with design detailsJinmou Li
2020-09-16test/fuse: use the getdents syscall instead of opendir/readdirAndrei Vagin
opendir() is a libc wrapper. Different libc-s can implement it differently.
2020-09-16test/fuse: clean upAndrei Vagin
2020-09-16Fix FUSE connection control lock ordering and race in unit testJinmou Li
2020-09-16fuse: don't pass lock by valueAndrei Vagin
copylocks: directory.go:34:7: Allocate passes lock by value: fuse/fuse.directoryFD contains fuse/fuse.fileDescription contains pkg/sentry/vfs/vfs.FileDescription contains pkg/sync/sync.Mutex
2020-09-16fuse: fix a compile time errorAndrei Vagin
readdir_test.cc:134:24: error: variable length arrays are a C99 feature [-Werror,-Wvla-extension] char readdir_payload[readdir_payload_size];
2020-09-16Revert "fuse: add benchmarking support for FUSE"Andrei Vagin
test/fuse/benchmark/read_benchmark.cc:34: Failure Expected: (fuse_prefix) != (nullptr), actual: NULL vs (nullptr) external/com_google_benchmark/src/benchmark_runner.cc:120: RunInThread: Check `st.iterations() >= st.max_iterations' failed. Benchmark returned before State::KeepRunning() returned false! --- FAIL: Benchmarks_BM_Read/262144/real_time (0.29s) runner.go:502: test "Benchmarks.BM_Read/262144/real_time" failed with error exit status 134, want nil FAIL
2020-09-16Fix FUSE unit test after vfs interface changeJinmou Li
2020-09-16Fix FUSE go unit test merge conflict mistakeJinmou Li
2020-09-16Receive broadcast packets on interested endpointsGhanan Gowripalan
When a broadcast packet is received by the stack, the packet should be delivered to each endpoint that may be interested in the packet. This includes all any address and specified broadcast address listeners. Test: integration_test.TestReuseAddrAndBroadcast PiperOrigin-RevId: 332060652
2020-09-16fs/fuse: Move the 'marshal' and 'primitive' packages to the 'pkg' directory.Andrei Vagin
2020-09-16fuse_open: add padding to open out requestBoyuan He
2020-09-16Unexport fusefs.inode.nodeIDCraig Chi
2020-09-16Implement FUSE_UNLINKBoyuan He
Fixes #3696
2020-09-16Fix comments of TODO issues.Craig Chi
2020-09-16Add FUSE umount supportJinmou Li
This change implements Release for the FUSE filesystem and expected behaviors of the FUSE devices. It includes several checks for aborted connection in the path for making a request and a function to abort all the ongoing FUSE requests in order.
2020-09-16Fix FUSE_RELEASE protocol reply processingJinmou Li
This commit fixes the potential unexpected errors of original handling of FUSE_RELEASE responses while keep the same behavior (ignoring any reply).
2020-09-16Improve FUSE async/noreply call logicJinmou Li
This change adds bookkeeping variables for the FUSE request. With them, old insecure confusing code we used to process async requests is replaced by new clear compiling ones. Future code can take advantage of them to have better control of each requests.
2020-09-16Refactor FUSE connection for readability and structureJinmou Li
This change decouples the code that is weakly tied to the connection struct from connection.go, rename variables and files with more meaningful choices, adds detailed comments, explains lock orders, and adds other minor improvement to make the existing FUSE code more readable and more organized. Purpose is to avoid too much code in one file and provide better structure for the future commits.
2020-09-16Add comments for exported attributesCraig Chi
2020-09-16Implement FUSE_SETATTRCraig Chi
This commit implements FUSE_SETATTR command. When a system call modifies the metadata of a regular file or a folder by chown(2), chmod(2), truncate(2), utime(2), or utimes(2), they should be translated to corresponding FUSE_SETATTR command and sent to the FUSE server. Fixes #3332
2020-09-16Add fh support for revise attr and fstat(2) testCraig Chi
According to Linux 4.4's FUSE behavior, the flags and fh attributes in FUSE_GETATTR are only used in read, write, and lseek. fstat(2) doesn't use them either. Add tests to ensure the requests sent from FUSE module are consistent with Linux's. Updates #3655
2020-09-16Add fuse_fd_util library to include common fuse fd test functionsCraig Chi
2020-09-16Add default attr in fuse_utilCraig Chi
fuse_util provides utilities for fuse testing. Add a function to return a stub fuse_attr struct with specified mode and nodeid.
2020-09-16Implement FUSE_WRITEJinmou Li
This commit adds basic write(2) support for FUSE.
2020-09-16Implement FUSE_CREATECraig Chi
FUSE_CREATE is called when issuing creat(2) or open(2) with O_CREAT. It creates a new file on the FUSE filesystem. Fixes #3825
2020-09-16FUSE device: clean up readLockedJinmou Li
This change removes the unnecessary loop and avoids the recursive call. It also fixes minor bugs in this function.
2020-09-16Downgrade FUSE minor version support and clarify commentsJinmou Li
2020-09-16fuse: remove unused marshalling functionsCraig Chi
This commit removes unused marshalling functions in linux abi package and moves self-defined FUSEInitRes wrapper to fuse package. Updates #3707
2020-09-16fuse: add benchmarking support for FUSEBoyuan He & Ridwan Sharif
This change adds the following: - Add support for containerizing syscall tests for FUSE - Mount tmpfs in the container so we can run benchmarks against it - Run the server in a background process - benchmarks for fuse syscall Co-authored-by: Ridwan Sharif <ridwanmsharif@google.com>
2020-09-16Support multiple FUSE kernel versions of FUSE_INIT response structCraig Chi
The fuse_init_out struct changes in different FUSE kernel versions. A FUSE server may implement older versions of fuse_init_out, but they share common attributes from the beginning. Implement variable-length marshallable interface to support older versions of ABI. Fixes #3707
2020-09-16Implementing inode.GetlinkCraig Chi
kernfs uses inode.Getlink to resolve symlink when look up paths. Updates #3452
2020-09-16Fix FUSE_READDIR offset issueCraig Chi
According to readdir(3), the offset attribute in struct dirent is the offset to the next dirent instead of the offset of itself. Send the successive FUSE_READDIR requests with the offset retrieved from the last entry. Updates #3255
2020-09-16fuse: use safe go_marshal API for FUSERidwan Sharif
Until #3698 is resolved, this change is needed to ensure we're not corrupting memory anywhere.
2020-09-16fuse: Implement IterDirents for directory file descriptionRidwan Sharif
Fixes #3255. This change adds support for IterDirents. You can now use `ls` in the FUSE sandbox. Co-authored-by: Craig Chi <craigchi@google.com>
2020-09-16Implement FUSE_RMDIRRidwan Sharif
Fixes #3587 Co-authored-by: Craig Chi <craigchi@google.com>
2020-09-16Implement FUSE_READJinmou Li
Fixes #3206
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