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2020-11-02Merge release-20201019.0-116-g5e606844d (automated)gVisor bot
2020-11-01Fix returned error when deleting non-existant addressIan Lewis
PiperOrigin-RevId: 340149214
2020-10-31Merge release-20201019.0-114-g4eb1c87e8 (automated)gVisor bot
2020-10-30Adjust error handling in kernfs rename.Dean Deng
Read-only directories (e.g. under /sys, /proc) should return EPERM for rename. PiperOrigin-RevId: 339979022
2020-10-31Merge release-20201019.0-113-g1f25697cf (automated)gVisor bot
2020-10-30Fix rename error handling for VFS2 kernfs.Dean Deng
The non-errno error was causing panics before. PiperOrigin-RevId: 339969348
2020-10-30Merge release-20201019.0-111-g9ad864628 (automated)gVisor bot
2020-10-30Separate kernel.Task.AsCopyContext() into CopyContext() and OwnCopyContext().Jamie Liu
kernel.copyContext{t} cannot be used outside of t's task goroutine, for three reasons: - t.CopyScratchBuffer() is task-goroutine-local. - Calling t.MemoryManager() without running on t's task goroutine or locking t.mu violates t.MemoryManager()'s preconditions. - kernel.copyContext passes t as context.Context to MM IO methods, which is illegal outside of t's task goroutine (cf. kernel.Task.Value()). Fix this by splitting AsCopyContext() into CopyContext() (which takes an explicit context.Context and is usable outside of the task goroutine) and OwnCopyContext() (which uses t as context.Context, but is only usable by t's task goroutine). PiperOrigin-RevId: 339933809
2020-10-30Merge release-20201019.0-110-gc94bf137d (automated)gVisor bot
2020-10-30Merge pull request #4564 from zhlhahaha:1981gVisor bot
PiperOrigin-RevId: 339921446
2020-10-29Merge release-20201019.0-103-g181fea0b5 (automated)gVisor bot
2020-10-29Make RedirectTarget thread safeKevin Krakauer
Fixes #4613. PiperOrigin-RevId: 339746784
2020-10-29Merge release-20201019.0-101-g02fe467b4 (automated)gVisor bot
2020-10-29Keep magic constants out of netstackKevin Krakauer
PiperOrigin-RevId: 339721152
2020-10-29Merge release-20201019.0-96-g265f1eb2c (automated)gVisor bot
2020-10-28Add leak checking for kernfs.Dentry.Dean Deng
Updates #1486. PiperOrigin-RevId: 339581879
2020-10-29Merge release-20201019.0-95-g3b4674ffe (automated)gVisor bot
2020-10-28Add logging option to leak checker.Dean Deng
Also refactor the template and CheckedObject interface to make this cleaner. Updates #1486. PiperOrigin-RevId: 339577120
2020-10-28Merge release-20201019.0-92-gd20ef61a8 (automated)gVisor bot
2020-10-28Merge pull request #4630 from lemin9538:lemin_arm64_devgVisor bot
PiperOrigin-RevId: 339540747
2020-10-28Merge release-20201019.0-90-g9907539d9 (automated)gVisor bot
2020-10-28Invalidate overlay.dentry.dirents during open() file creation.Jamie Liu
Updates #1199 PiperOrigin-RevId: 339528827
2020-10-28Merge release-20201019.0-88-g4cc3894b2 (automated)gVisor bot
2020-10-28[vfs] Refactor hostfs mmap into kernfs util.Ayush Ranjan
PiperOrigin-RevId: 339505487
2020-10-28Merge release-20201019.0-81-g5fe886ab6 (automated)gVisor bot
2020-10-27Merge pull request #4598 from lubinszARM:pr_kvm_precise_syncgVisor bot
PiperOrigin-RevId: 339404936
2020-10-28arm64: need to restore the sentry's TLS when in EL1Min Le
Signed-off-by: Min Le <lemin.lm@antgroup.com>
2020-10-27Add SHA512 to merkle tree libraryChong Cai
PiperOrigin-RevId: 339377254
2020-10-28Merge release-20201019.0-73-g1c2836da3 (automated)gVisor bot
2020-10-27Implement /proc/[pid]/memLennart
This PR implements /proc/[pid]/mem for `pkg/sentry/fs` (refer to #2716) and `pkg/sentry/fsimpl`. @majek COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/4060 from lnsp:proc-pid-mem 2caf9021254646f441be618a9bb5528610e44d43 PiperOrigin-RevId: 339369629
2020-10-27Merge release-20201019.0-69-g6d50185e7 (automated)gVisor bot
2020-10-27Assign VFS2 overlay device numbers based on layer device numbers.Jamie Liu
In VFS1's overlayfs, files use the device and inode number of the lower layer inode if one exists, and the upper layer inode otherwise. The former behavior is inefficient (requiring lower layer lookups even if the file exists and is otherwise wholly determined by the upper layer), and somewhat dangerous if the lower layer is also observable (since both the overlay and lower layer file will have the same device and inode numbers and thus appear to be the same file, despite being behaviorally different). VFS2 overlayfs imitates Linux overlayfs (in its default configuration) instead; it always uses the inode number from the originating layer, but synthesizes a unique device number for directories and another device number for non-directory files that have not been copied-up. As it turns out, the latter is insufficient (in VFS2, and possibly Linux as well), because a given layer may include files with different device numbers. If two distinct files on such a layer have device number X and Y respectively, but share inode number Z, then the overlay will map both files to some private device number X' and inode number Z, potentially confusing applications. Fix this by assigning synthetic device numbers based on the lower layer's device number, rather than the lower layer's vfs.Filesystem. PiperOrigin-RevId: 339300341
2020-10-27Merge release-20201019.0-68-g59e2c9f16 (automated)gVisor bot
2020-10-27Add basic address deletion to netlinkIan Lewis
Updates #3921 PiperOrigin-RevId: 339195417
2020-10-27Merge release-20201019.0-65-gfacb2fb9c (automated)gVisor bot
2020-10-26Implement command IPC_STAT for semctl.Jing Chen
PiperOrigin-RevId: 339166854
2020-10-26Add verity tests for deleted/renamed casesChong Cai
Also change verity test to use a context with an active task. This is required to delete/rename the file in the underlying file system. PiperOrigin-RevId: 339146445
2020-10-26Merge release-20201019.0-63-g652f11380 (automated)gVisor bot
2020-10-26[vfs] kernfs: Implement LRU cache for kernfs dentries.Ayush Ranjan
Much like the VFS2 gofer client, kernfs too now caches dentries. The size of the LRU cache is configurable via mount options. Have adopted the same reference semantics from gofer client dentry. Only sysfs and procfs use this LRU cache. The rest of the kernfs users (devpts, fusefs, host, pipefs, sockfs) still use the no cache approach. PiperOrigin-RevId: 339139835
2020-10-26Merge release-20201019.0-62-g0bdcee38b (automated)gVisor bot
2020-10-26Fix SCM Rights S/R reference leak.Dean Deng
Control messages collected when peeking into a socket were being leaked. PiperOrigin-RevId: 339114961
2020-10-24Implement Seek in verity fsChong Cai
PiperOrigin-RevId: 338847417
2020-10-24Merge release-20201019.0-58-g4feb5c7c2 (automated)gVisor bot
2020-10-24Add leak checking to vfs2 structures that cannot use the refs_vfs2 template.Dean Deng
Updates #1486. PiperOrigin-RevId: 338832085
2020-10-23Internal change.Chong Cai
PiperOrigin-RevId: 338798433
2020-10-24Merge release-20201019.0-53-g8dfbec28a (automated)gVisor bot
2020-10-23Fix nogo tests in //pkg/sentry/socket/...Ting-Yu Wang
PiperOrigin-RevId: 338784921
2020-10-24Merge release-20201019.0-51-g9f87400f0 (automated)gVisor bot
2020-10-23Support VFS2 save/restore.Jamie Liu
Inode number consistency checks are now skipped in save/restore tests for reasons described in greatest detail in StatTest.StateDoesntChangeAfterRename. They pass in VFS1 due to the bug described in new test case SimpleStatTest.DifferentFilesHaveDifferentDeviceInodeNumberPairs. Fixes #1663 PiperOrigin-RevId: 338776148
2020-10-23Merge release-20201019.0-45-g61b379ee1 (automated)gVisor bot
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