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2021-08-18Merge release-20210806.0-39-gb495ae599 (automated)gVisor bot
2021-08-17Merge pull request #6262 from sudo-sturbia:msgqueue/syscalls3gVisor bot
PiperOrigin-RevId: 391416650
2021-08-17Implement stub for msgctl(2).Zyad A. Ali
Add support for msgctl and enable tests. Fixes #135
2021-08-17Implement control operations on msgqueue.Zyad A. Ali
For IPCInfo, update value of MSGSEG constant in abi to avoid overflow in MsgInfo.MsgSeg. MSGSEG was originaly simplified in abi, and is unused (by us and within the kernel), so updating it is okay. Updates #135
2021-08-17Implement ipc.Object.Set and use it in ipc mechanisms.Zyad A. Ali
Set provides functionality of {sem,shm,msg}ctl(IPC_SET).
2021-08-14Merge release-20210806.0-29-gce58d71fd (automated)gVisor bot
2021-08-13[syserror] Remove pkg syserror.Zach Koopmans
Removes package syserror and moves still relevant code to either linuxerr or to syserr (to be later removed). Internal errors are converted from random types to *errors.Error types used in linuxerr. Internal errors are in linuxerr/internal.go. PiperOrigin-RevId: 390724202
2021-08-13Merge release-20210806.0-27-g6eb8596f7 (automated)gVisor bot
2021-08-13Add Event controlsChong Cai
Add Event controls and implement "stream" commands. PiperOrigin-RevId: 390691702
2021-08-13Merge release-20210806.0-23-geb0f24c6c (automated)gVisor bot
2021-08-13Free multicastMemberships on UDP endpoint closeGhanan Gowripalan
tcpip.Endpoint.Close is documented to free all resources associated with an endpoint so we don't need to create an empty map to clear the multicast memberships. PiperOrigin-RevId: 390609826
2021-08-13Merge release-20210806.0-22-gddcf884e9 (automated)gVisor bot
2021-08-12Add Usage controlsChong Cai
Add Usage controls and implement "usage/usagefd" commands. PiperOrigin-RevId: 390507423
2021-08-12Merge release-20210806.0-21-g02370bbd3 (automated)gVisor bot
2021-08-12[syserror] Convert remaining syserror definitions to linuxerr.Zach Koopmans
Convert remaining public errors (e.g. EINTR) from syserror to linuxerr. PiperOrigin-RevId: 390471763
2021-08-12Merge release-20210806.0-19-g345eb4a66 (automated)gVisor bot
2021-08-12fix typoKevin Krakauer
PiperOrigin-RevId: 390463819
2021-08-12Merge release-20210726.0-57-g3416a3db7 (automated)gVisor bot
2021-08-12Internal change.gVisor bot
PiperOrigin-RevId: 390318725
2021-08-12Merge release-20210726.0-56-g96459f559 (automated)gVisor bot
2021-08-12Add support for TCP send buffer auto tuning.Nayana Bidari
Send buffer size in TCP indicates the amount of bytes available for the sender to transmit. This change will allow TCP to update the send buffer size when - TCP enters established state. - ACK is received. The auto tuning is disabled when the send buffer size is set with the SO_SNDBUF option. PiperOrigin-RevId: 390312274
2021-08-12Merge release-20210726.0-54-g6d0b40b1d (automated)gVisor bot
2021-08-11[op] Make PacketBuffer Clone() do a deeper copy.Ayush Ranjan
Earlier PacketBuffer.Clone() would do a shallow top level copy of the packet buffer - which involved sharing the *buffer.Buffer between packets. Reading or writing to the buffer in one packet would impact the other. This caused modifications in one packet to affect the other's pkt.Views() which is not desired. Change the clone to do a deeper copy of the underlying buffer list and buffer pointers. The payload buffers (which are immutable) are still shared. This change makes the Clone() operation more expensive as we now need to allocate the entire buffer list. Added unit test to test integrity of packet data after cloning. Reported-by: syzbot+7ffff9a82a227b8f2e31@syzkaller.appspotmail.com Reported-by: syzbot+7d241de0d9072b2b6075@syzkaller.appspotmail.com Reported-by: syzbot+212bc4d75802fa461521@syzkaller.appspotmail.com PiperOrigin-RevId: 390277713
2021-08-12Merge release-20210726.0-53-g4249ba850 (automated)gVisor bot
2021-08-11Do not clear merkle files when creating dentryChong Cai
The dentry for each file/directory can be created/destroyed multiple times during sandbox lifetime. We should not clear the Merkle file each time a dentry is created. PiperOrigin-RevId: 390277107
2021-08-12Merge release-20210726.0-52-g5456fa647 (automated)gVisor bot
2021-08-11Popluate verity directory children namesChong Cai
We were relying on children adding its name to parent's dentry to populate parent's children list. However, this may not work since the parent dentry could be destroyed if its reference count drops to zero. In that case, a new dentry will be created when enabling the parent and it does not contain the children names info. Therefore we need to populate the child names list again to avoid missing children in the directory. PiperOrigin-RevId: 390270227
2021-08-12Merge release-20210726.0-50-ga50596874 (automated)gVisor bot
2021-08-11Initial cgroupfs support for subcontainersRahat Mahmood
Allow creation and management of subcontainers through cgroupfs directory syscalls. Also add a mechanism to specify a default root container to start new jobs in. This implements the filesystem support for subcontainers, but doesn't implement hierarchical resource accounting or task migration. PiperOrigin-RevId: 390254870
2021-08-09Merge release-20210726.0-45-g14d6cb443 (automated)gVisor bot
2021-08-09platform/kvm: fix a race condition in vCPU.unlock()Andrei Vagin
Right now, it contains the code: origState := atomic.LoadUint32(&c.state) atomicbitops.AndUint32(&c.state, ^vCPUUser) The problem here is that vCPU.bounce that is called from another thread can add vCPUWaiter when origState has been read but vCPUUser isn't cleared yet. In this case, vCPU.unlock doesn't notify other threads about changes and c.bounce will be stuck in the futex_wait call. PiperOrigin-RevId: 389697411
2021-08-06Merge release-20210726.0-42-g569f605f4 (automated)gVisor bot
2021-08-05Correctly handle interruptions in blocking msgqueue syscalls.Rahat Mahmood
Reported-by: syzbot+63bde04529f701c76168@syzkaller.appspotmail.com Reported-by: syzbot+69866b9a16ec29993e6a@syzkaller.appspotmail.com PiperOrigin-RevId: 389084629
2021-08-05Merge release-20210726.0-39-g99325baf5 (automated)gVisor bot
2021-08-05Bump gVisor build tags to go1.19Michael Pratt
Go's dev.typeparams branch already claims to be Go 1.18, so our !go1.18 build tags breaking testing gVisor with that branch. Normally I would not want to bump the build tags this early, but I plan to extend checklinkname to check the assumptions in these files and remove the build tags ASAP. So we just go ahead and bump the tags until then to unblock testing. PiperOrigin-RevId: 389037239
2021-08-05Merge release-20210726.0-38-gcaf9403f6 (automated)gVisor bot
2021-08-05Automated rollback of changelist 384508720Kevin Krakauer
PiperOrigin-RevId: 389035388
2021-08-05Merge release-20210726.0-37-g42301ae7d (automated)gVisor bot
2021-08-05Merge pull request #6372 from avagin:AlignedAtomicgVisor bot
PiperOrigin-RevId: 388985968
2021-08-04Reduce overhead of AlignedAtomic typesAndrei Vagin
AlignedAtomicUint64 is 15 bytes and it takes 16 bytes in structures. On 32-bit systems, variables and structure fields is guaranteed to be 32-bit aligned and this means that we need only 12 bytes to find 8 contiguous bytes.
2021-08-05Merge release-20210726.0-34-g43e3d29b9 (automated)gVisor bot
2021-08-04Implement PR_SET_CHILD_SUBREAPER when the calling task is PID 1.Nicolas Lacasse
In this case, the task is already a subreaper, so setting this bit is a noop. Updates #2323 PiperOrigin-RevId: 388828034
2021-08-04Merge release-20210726.0-32-gcbb99336c (automated)gVisor bot
2021-08-04Add Fs controlsChong Cai
Add Fs controls and implement "cat" command. PiperOrigin-RevId: 388812540
2021-08-03Merge release-20210726.0-30-g8caf231cb (automated)gVisor bot
2021-08-03Add Lifecycle controlsChong Cai
Also change runsc pause/resume cmd to access Lifecycle instead of containerManager. PiperOrigin-RevId: 388534928
2021-08-03Merge release-20210726.0-27-g8363a98c4 (automated)gVisor bot
2021-08-03Implement MSG_COPY option for msgrcv(2).Zyad A. Ali
Implement Queue.Copy and add more tests for it. Updates #135
2021-08-03Implement stubs for msgsnd(2) and msgrcv(2).Zyad A. Ali
Add support for msgsnd and msgrcv and enable syscall tests. Updates #135
2021-08-03Implement Queue.Receive.Zyad A. Ali
Receive implements the behaviour of msgrcv(2) without the MSG_COPY flag. Updates #135
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