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2020-09-15Merge release-20200907.0-47-g86b31a807 (automated)gVisor bot
2020-09-15RFC: design for a 9P replacementJamie Liu
Tentatively `lisafs` (LInux SAndbox FileSystem). PiperOrigin-RevId: 331839246
2020-09-15Merge release-20200907.0-46-g84d48c0fd (automated)gVisor bot
2020-09-15Merge pull request #3895 from btw616:fix/issue-3894gVisor bot
PiperOrigin-RevId: 331824411
2020-09-15Merge release-20200907.0-44-gd3880b76c (automated)gVisor bot
2020-09-15Don't conclude broadcast from route destinationGhanan Gowripalan
The routing table (in its current) form should not be used to make decisions about whether a remote address is a broadcast address or not (for IPv4). Note, a destination subnet does not always map to a network. E.g. RouterA may have a route to 192.168.0.0/22 through RouterB, but RouterB may be configured with 4x /24 subnets on 4 different interfaces. See https://github.com/google/gvisor/issues/3938. PiperOrigin-RevId: 331819868
2020-09-15Fix proc.(*fdDir).IterDirents for VFS2Tiwei Bie
Currently the returned offset is an index, and we can't use it to find the next fd to serialize, because getdents should iterate correctly despite mutation of fds. Instead, we can return the next fd to serialize plus 2 (which accounts for "." and "..") as the offset. Fixes: #3894 Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
2020-09-14Merge release-20200907.0-43-g52ffeb2d6 (automated)gVisor bot
2020-09-14Add note about gofer link(2) limitationFabricio Voznika
PiperOrigin-RevId: 331648296
2020-09-14Merge release-20200907.0-42-g2747030ec (automated)gVisor bot
2020-09-14Store multicast memberships in a setTamir Duberstein
This is simpler and more performant. PiperOrigin-RevId: 331639978
2020-09-14Merge release-20200907.0-41-g05d2ebee5 (automated)gVisor bot
2020-09-14Test RST handling in TIME_WAIT.Mithun Iyer
gVisor stack ignores RSTs when in TIME_WAIT which is not the default Linux behavior. Add a packetimpact test to test the same. Also update code comments to reflect the rationale for the current gVisor behavior. PiperOrigin-RevId: 331629879
2020-09-14Merge release-20200907.0-40-g2969b1740 (automated)gVisor bot
2020-09-14Correct FDSize in /proc/[pid]/status.Jamie Liu
In Linux, FDSize is fs/proc/array.c:task_state() => struct fdtable::max_fds, which is set to the underlying array's length in fs/file.c:alloc_fdtable(). Follow-up changes: - Remove FDTable.GetRefs() and FDTable.GetRefsVFS2(), which are unused. - Reset FDTable.used to 0 during restore, since the subsequent calls to FDTable.setAll() increment it again, causing its value to be doubled. (After this CL, FDTable.used is only used to avoid reallocation in FDTable.GetFDs(), so this fix is not very visible.) PiperOrigin-RevId: 331588190
2020-09-14Merge release-20200907.0-39-g833ceb0f1 (automated)gVisor bot
2020-09-14Fix modprobe dependencyKevin Krakauer
The modprobe command only takes 1 module per invocation. The second module name is being passed as a module parameter. PiperOrigin-RevId: 331585765
2020-09-13Merge release-20200907.0-38-gb6ca96b9b (automated)gVisor bot
2020-09-12Cap reassembled IPv6 packets at 65535 octetsToshi Kikuchi
IPv4 can accept 65536-octet reassembled packets. Test: - ipv4_test.TestInvalidFragments - ipv4_test.TestReceiveFragments - ipv6.TestInvalidIPv6Fragments - ipv6.TestReceiveIPv6Fragments Fixes #3770 PiperOrigin-RevId: 331382977
2020-09-12Merge release-20200907.0-37-g3ca73841d (automated)gVisor bot
2020-09-11Move the 'marshal' and 'primitive' packages to the 'pkg' directory.Rahat Mahmood
PiperOrigin-RevId: 331256608
2020-09-11Merge release-20200810.0-237-g8d0f76dda (automated)gVisor bot
2020-09-11fuse_open: add padding to open out requestBoyuan He
2020-09-11Merge release-20200907.0-36-g1f4fb817c (automated)gVisor bot
2020-09-11Check that we have access to the trusted.* xattr namespace directly.Nicolas Lacasse
These operations require CAP_SYS_ADMIN in the root user namespace. There's no easy way to check that other than trying the operation and seeing what happens. PiperOrigin-RevId: 331242256
2020-09-11Merge release-20200810.0-236-gb8bee78d0 (automated)gVisor bot
2020-09-11Unexport fusefs.inode.nodeIDCraig Chi
2020-09-11Implement FUSE_UNLINKboyuan-he
Fixes #3696
2020-09-11Fix comments of TODO issues.Craig Chi
2020-09-11Add FUSE umount supportjinmouil
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.
2020-09-11Fix 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).
2020-09-11Improve 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.
2020-09-11Refactor 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.
2020-09-11Add comments for exported attributesCraig Chi
2020-09-11Implement 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
2020-09-11Add 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
2020-09-11Add fuse_fd_util library to include common fuse fd test functionsCraig Chi
2020-09-11Add 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.
2020-09-11Implement FUSE_WRITEJinmou Li
This commit adds basic write(2) support for FUSE.
2020-09-11Implement 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
2020-09-11FUSE device: clean up readLockedjinmouil
This change removes the unnecessary loop and avoids the recursive call. It also fixes minor bugs in this function.
2020-09-11Downgrade FUSE minor version support and clarify commentsjinmouil
2020-09-11fuse: 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
2020-09-11fuse: 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>
2020-09-11Support 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
2020-09-11Implementing inode.GetlinkCraig Chi
kernfs uses inode.Getlink to resolve symlink when look up paths. Updates #3452
2020-09-11Fix 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
2020-09-11fuse: use safe go_marshal API for FUSERidwan Sharif
Until #3698 is resolved, this change is needed to ensure we're not corrupting memory anywhere.
2020-09-11fuse: 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>
2020-09-11Implement FUSE_RMDIRRidwan Sharif
Fixes #3587 Co-authored-by: Craig Chi <craigchi@google.com>
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