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2020-01-10Merge release-20191213.0-96-g27500d5 (automated)gVisor bot
2020-01-09New sync package.Ian Gudger
* Rename syncutil to sync. * Add aliases to sync types. * Replace existing usage of standard library sync package. This will make it easier to swap out synchronization primitives. For example, this will allow us to use primitives from github.com/sasha-s/go-deadlock to check for lock ordering violations. Updates #1472 PiperOrigin-RevId: 289033387
2020-01-09Merge release-20191213.0-88-gee3158f (automated)gVisor bot
2020-01-09Merge pull request #1423 from xiaobo55x:stracegVisor bot
PiperOrigin-RevId: 288965915
2020-01-09Merge release-20191213.0-86-g8643933 (automated)gVisor bot
2020-01-09Change BindToDeviceOption to store NICIDEyal Soha
This makes it possible to call the sockopt from go even when the NIC has no name. PiperOrigin-RevId: 288955236
2020-01-09Merge release-20191213.0-84-g290908f (automated)gVisor bot
2020-01-09Merge release-20191213.0-82-gfbb2c00 (automated)gVisor bot
2020-01-08Return correct length with MSG_TRUNC for unix sockets.Ian Lewis
This change calls a new Truncate method on the EndpointReader in RecvMsg for both netlink and unix sockets. This allows readers such as sockets to peek at the length of data without actually reading it to a buffer. Fixes #993 #1240 PiperOrigin-RevId: 288800167
2020-01-08Define sizes for extent headers and entries separately to improve clarity.Dean Deng
PiperOrigin-RevId: 288799694
2020-01-09Merge release-20191213.0-80-gb3ae8a6 (automated)gVisor bot
2020-01-08Fix slice bounds out of range panic in parsing socket control message.Ting-Yu Wang
Panic found by syzakller. PiperOrigin-RevId: 288799046
2020-01-08Merge release-20191213.0-78-gd530df2 (automated)gVisor bot
2020-01-08Introduce tcpip.SockOptBoolTamir Duberstein
...and port V6OnlyOption to it. PiperOrigin-RevId: 288789451
2020-01-08Merge release-20191213.0-76-ga271bcc (automated)gVisor bot
2020-01-08Rename tcpip.SockOpt{,Int}Tamir Duberstein
PiperOrigin-RevId: 288772878
2020-01-08Merge release-20191213.0-74-gbb96f52 (automated)gVisor bot
2020-01-08Merge pull request #1273 from lubinszARM:pr_ring_3gVisor bot
PiperOrigin-RevId: 288743614
2020-01-08Make /proc/[pid] offset start at TGID_OFFSETFabricio Voznika
Updates #1195 PiperOrigin-RevId: 288725745
2020-01-08Merge release-20191213.0-69-ga53ac73 (automated)gVisor bot
2020-01-07fs/splice: don't report a partialResult error if there is no data lossAndrei Vagin
PiperOrigin-RevId: 288642552
2020-01-07Merge release-20191213.0-63-g17c1824 (automated)gVisor bot
2020-01-06platform/syscall: use syscall + int3 to execute a system call in a stub processAndrei Vagin
Right now, we need to call ptrace(PTRACE_SYSCALL) and wait() twice to execute one system call in a stub process. With these changes, we will need to call ptrace + wait only once. In addition, this allows to workaround the kernel bug when a stub process doesn't stop on syscall-exit-stop and starts executing the next system call. Reported-by: syzbot+37143cafa8dc3b5008ee@syzkaller.appspotmail.com PiperOrigin-RevId: 288393029
2020-01-06Merge release-20191213.0-62-g51f3ab8 (automated)gVisor bot
2020-01-06Convert memfs into proto-tmpfs.Nicolas Lacasse
- Renamed memfs to tmpfs. - Copied fileRangeSet bits from fs/fsutil/ to fsimpl/tmpfs/ - Changed tmpfs to be backed by filemem instead of byte slice. - regularFileReadWriter uses a sync.Pool, similar to gofer client. PiperOrigin-RevId: 288356380
2020-01-06Merge release-20191213.0-61-g354a15a (automated)gVisor bot
2020-01-06Implement rseq(2)Michael Pratt
PiperOrigin-RevId: 288342928
2020-01-06Merge release-20191213.0-60-g6410387 (automated)gVisor bot
2020-01-06Cleanup Shm reference handlingMichael Pratt
Currently, shm.Registry.FindByID will return Shm instances without taking an additional reference on them, making it possible for them to disappear. More explicitly handle references. All callers hold a reference for the duration that they hold the instance. Registry.shms may transitively hold Shms with no references, so it must TryIncRef to determine if they are still valid. PiperOrigin-RevId: 288314529
2020-01-04Merge release-20191213.0-58-gbf53d32 (automated)gVisor bot
2020-01-03Remove FIXME comments to close old bug.Zach Koopmans
PiperOrigin-RevId: 288075400
2019-12-30Merge release-20191213.0-56-g1f384ac (automated)gVisor bot
2019-12-30Add VFS2 support for device special files.Jamie Liu
- Add FileDescriptionOptions.UseDentryMetadata, which reduces the amount of boilerplate needed for device FDs and the like between filesystems. - Switch back to having FileDescription.Init() take references on the Mount and Dentry; otherwise managing refcounts around failed calls to OpenDeviceSpecialFile() / Device.Open() is tricky. PiperOrigin-RevId: 287575574
2019-12-27Merge release-20191213.0-55-g796f53c (automated)gVisor bot
2019-12-27Add VFS2 support for /proc/filesystems.Jamie Liu
Updates #1195 PiperOrigin-RevId: 287269106
2019-12-26Merge release-20191213.0-54-g3c125eb (automated)gVisor bot
2019-12-26Initial procfs implementation in VFSv2Fabricio Voznika
Updates #1195 PiperOrigin-RevId: 287227722
2019-12-26Merge release-20191213.0-53-g5b9034c (automated)gVisor bot
2019-12-26Merge pull request #1461 from xiaobo55x:ptrace_sysemugVisor bot
PiperOrigin-RevId: 287225250
2019-12-26Merge release-20191213.0-51-g7b5a59d (automated)gVisor bot
2019-12-26Merge pull request #1460 from lubinszARM:pr_clean_code1gVisor bot
PiperOrigin-RevId: 287221280
2019-12-26Merge release-20191213.0-49-g87e4d03 (automated)gVisor bot
2019-12-26Automated rollback of changelist 287029703gVisor bot
PiperOrigin-RevId: 287217899
2019-12-24Merge release-20191213.0-48-ge013c48 (automated)gVisor bot
2019-12-24Enable IP_RECVTOS socket option for datagram socketsRyan Heacock
Added the ability to get/set the IP_RECVTOS socket option on UDP endpoints. If enabled, TOS from the incoming Network Header passed as ancillary data in the ControlMessages. Test: * Added unit test to udp_test.go that tests getting/setting as well as verifying that we receive expected TOS from incoming packet. * Added a syscall test PiperOrigin-RevId: 287029703
2019-12-24slight changes to ring0&pagetables for Arm64Bin Lu
There are 2 jobs have been finished in this patch: 1, a comment was added to explain the purpose of the extra NOPs in Vectors(). 2, some merge errors were fixed. Signed-off-by: Bin Lu <bin.lu@arm.com>
2019-12-23Fix deadlock in kernfs.Filesystem.revalidateChildLockedFabricio Voznika
It was calling Dentry.InsertChild with the dentry's mutex already locked. Updates #1035 PiperOrigin-RevId: 286962742
2019-12-23Merge release-20191213.0-46-gf45df75 (automated)gVisor bot
2019-12-23Clean up vfs.FilesystemImpl methods that operate on parent directories.Jamie Liu
- Make FilesystemImpl methods that operate on parent directories require !rp.Done() (i.e. there is at least one path component to resolve) as precondition and postcondition (in cases where they do not finish path resolution due to mount boundary / absolute symlink), and require that they do not need to follow the last path component (the file being created / deleted) as a symlink. Check for these in VFS. - Add FilesystemImpl.GetParentDentryAt(), which is required to obtain the old parent directory for VFS.RenameAt(). (Passing the Dentry to be renamed instead has the wrong semantics if the file named by the old path is a mount point since the Dentry will be on the wrong Mount.) - Update memfs to implement these methods correctly (?), including RenameAt. - Change fspath.Parse() to allow empty paths (to simplify implementation of AT_EMPTY_PATH). - Change vfs.PathOperation to take a fspath.Path instead of a raw pathname; non-test callers will need to fspath.Parse() pathnames themselves anyway in order to detect absolute paths and select PathOperation.Start accordingly. PiperOrigin-RevId: 286934941
2019-12-23Replace syscall.PTRACE_SYSEMU with unix.PTRACE_SYSEMUHaibo Xu
Linux PTRACE_SYSEMU support on arm64 was merged to mainline from V5.3, and the corresponding support in go also enabled recently. Since the "syscall" package is locked down from go 1.4, so the ptrace PTRACE_SYSEMU definition can't be added to package "syscall" on arm64. According to the golang community, updates required by new systems or versions should use the corresponding package in the golang.org/x/sys repository instead(https://golang.org/pkg/syscall/). Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I2f917bb2be62f990c3e158e2bb99e094ea03f751
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