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2018-06-01Move page tables lock into the address space.Adin Scannell
This is necessary to prevent races with invalidation. It is currently possible that page tables are garbage collected while paging caches refer to them. We must ensure that pages are held until caches can be invalidated. This is not achieved by this goal alone, but moving locking to outside the page tables themselves is a requisite. PiperOrigin-RevId: 198920784 Change-Id: I66fffecd49cb14aa2e676a84a68cabfc0c8b3e9a
2018-06-01Add SyscallRules that supports argument filteringZhengyu He
PiperOrigin-RevId: 198919043 Change-Id: I7f1f0a3b3430cd0936a4ee4fc6859aab71820bdf
2018-06-01Ignores IPv6 addresses when configuring networkFabricio Voznika
Closes #60 PiperOrigin-RevId: 198887885 Change-Id: I9bf990ee3fde9259836e57d67257bef5b85c6008
2018-05-31Add SHA512 file to nightly buildFabricio Voznika
PiperOrigin-RevId: 198745666 Change-Id: I38d4163cd65f1236b09ce4f6481197a9a9fd29f2
2018-05-30Restore FS on resume.Adin Scannell
Previously, the vCPU FS was always correct because it relied on the reset coming out of the switch. When that doesn't occur, for example, using bluepill directly, the FS value can be incorrect leading to strange corruption. This change is necessary for a subsequent change that enforces guest mode for page table modifications, and it may reduce test flakiness. (The problematic path may occur in tests, but does not occur in the actual platform.) PiperOrigin-RevId: 198648137 Change-Id: I513910a973dd8666c9a1d18cf78990964d6a644d
2018-05-30Change ring0 & page tables arguments to structs.Adin Scannell
This is a refactor of ring0 and ring0/pagetables that changes from individual arguments to opts structures. This should involve no functional changes, but sets the stage for subsequent changes. PiperOrigin-RevId: 198627556 Change-Id: Id4460340f6a73f0c793cd879324398139cd58ae9
2018-05-29Supress error when deleting non-existing container with --forceFabricio Voznika
This addresses the first issue reported in #59. CRI-O expects runsc to return success to delete when --force is used with a non-existing container. PiperOrigin-RevId: 198487418 Change-Id: If7660e8fdab1eb29549d0a7a45ea82e20a1d4f4a
2018-05-29Automated rollback of changelist 196886839Fabricio Voznika
PiperOrigin-RevId: 198457660 Change-Id: I6ea5cf0b4cfe2b5ba455325a7e5299880e5a088a
2018-05-24Poll should wake up on ECONNREFUSED with no mask.Brian Geffon
Today poll will not wake up on a ECONNREFUSED if no poll mask is specified, which is equivalent to POLLHUP | POLLERR which are implicitly added during the poll syscall. PiperOrigin-RevId: 197967183 Change-Id: I668d0730c33701228913f2d0843b48491b642efb
2018-05-24rpcinet connect doesn't handle all errnos correctly.Brian Geffon
These were causing non-blocking related errnos to be returned to the sentry when they were created as blocking FDs internally. PiperOrigin-RevId: 197962932 Change-Id: I3f843535ff87ebf4cb5827e9f3d26abfb79461b0
2018-05-24Configure sandbox as superuserFabricio Voznika
Container user might not have enough priviledge to walk directories and mount filesystems. Instead, create superuser to perform these steps of the configuration. PiperOrigin-RevId: 197953667 Change-Id: I643650ab654e665408e2af1b8e2f2aa12d58d4fb
2018-05-23Adding test case for RST acceptable ack panicBrian Geffon
PiperOrigin-RevId: 197795613 Change-Id: I759dd04995d900cba6b984649fa48bbc880946d6
2018-05-23Fix typo in TCP transportIan Gudger
PiperOrigin-RevId: 197789418 Change-Id: I86b1574c8d3b8b321348d9b101ffaef7aa15f722
2018-05-22Remove offset check to match with Linux implementation.Fabricio Voznika
PiperOrigin-RevId: 197644246 Change-Id: I63eb0a58889e69fbc4af2af8232f6fa1c399d43f
2018-05-22When sending a RST the acceptable ACK window shouldn't change.Brian Geffon
Today when we transmit a RST it's happening during the time-wait flow. Because a FIN is allowed to advance the acceptable ACK window we're incorrectly doing that for a RST. PiperOrigin-RevId: 197637565 Change-Id: I080190b06bd0225326cd68c1fbf37bd3fdbd414e
2018-05-22Change length type, and let fadvise64 return ESPIPE if file is a pipeChanwit Kaewkasi
Kernel before 2.6.16 return EINVAL, but later return ESPIPE for this case. Also change type of "length" from Uint(uint32) to Int64. Because C header uses type "size_t" (unsigned long) or "off_t" (long) for length. And it makes more sense to check length < 0 with Int64 because Uint cannot be negative. Change-Id: Ifd7fea2dcded7577a30760558d0d31f479f074c4 PiperOrigin-RevId: 197616743
2018-05-22sentry: Add simple SIOCGIFFLAGS support (IFF_RUNNING and IFF_PROMIS).Kevin Krakauer
Establishes a way of communicating interface flags between netstack and epsocket. More flags can be added over time. PiperOrigin-RevId: 197616669 Change-Id: I230448c5fb5b7d2e8d69b41a451eb4e1096a0e30
2018-05-22Clarify that syserr.New must only be called during initIan Gudger
PiperOrigin-RevId: 197599402 Change-Id: I23eb0336195ab0d3e5fb49c0c57fc9e0715a9b75
2018-05-21Fix test failure when user can't mount temp dirFabricio Voznika
PiperOrigin-RevId: 197491098 Change-Id: Ifb75bd4e4f41b84256b6d7afc4b157f6ce3839f3
2018-05-21Dramatically improve handling of KVM vCPU pool.Adin Scannell
Especially in situations with small numbers of vCPUs, the existing system resulted in excessive thrashing. Now, execution contexts co-ordinate as smoothly as they can to share a small number of cores. PiperOrigin-RevId: 197483323 Change-Id: I0afc0c5363ea9386994355baf3904bf5fe08c56c
2018-05-18sentry: Get "ip link" working.Kevin Krakauer
In Linux, many UDS ioctls are passed through to the NIC driver. We do the same here, passing ioctl calls to Unix sockets through to epsocket. In Linux you can see this path at net/socket.c:sock_ioctl, which calls sock_do_ioctl, which calls net/core/dev_ioctl.c:dev_ioctl. SIOCGIFNAME is also added. PiperOrigin-RevId: 197167508 Change-Id: I62c326a4792bd0a473e9c9108aafb6a6354f2b64
2018-05-17Move postgres to list of supported imagesFabricio Voznika
PiperOrigin-RevId: 197104043 Change-Id: I377c0727ebf0c44361ed221e1b197787825bfb7b
2018-05-17Cleanup docsMichael Pratt
This brings the proc document more up-to-date. PiperOrigin-RevId: 197070161 Change-Id: Iae2cf9dc44e3e748a33f497bb95bd3c10d0c094a
2018-05-17Fix capability check for sysv semaphores.Rahat Mahmood
Capabilities for sysv sem operations were being checked against the current task's user namespace. They should be checked against the user namespace owning the ipc namespace for the sems instead, per ipc/util.c:ipcperms(). PiperOrigin-RevId: 197063111 Change-Id: Iba29486b316f2e01ee331dda4e48a6ab7960d589
2018-05-17Implement sysv shm.Rahat Mahmood
PiperOrigin-RevId: 197058289 Change-Id: I3946c25028b7e032be4894d61acb48ac0c24d574
2018-05-17Fix sendto for dual stack UDP socketsIan Gudger
Previously, dual stack UDP sockets bound to an IPv4 address could not use sendto to communicate with IPv4 addresses. Further, dual stack UDP sockets bound to an IPv6 address could use sendto to communicate with IPv4 addresses. Neither of these behaviors are consistent with Linux. PiperOrigin-RevId: 197036024 Change-Id: Ic3713efc569f26196e35bb41e6ad63f23675fc90
2018-05-17Push signal-delivery and wait into the sandbox.Nicolas Lacasse
This is another step towards multi-container support. Previously, we delivered signals directly to the sandbox process (which then forwarded the signal to PID 1 inside the sandbox). Similarly, we waited on a container by waiting on the sandbox process itself. This approach will not work when there are multiple containers inside the sandbox, and we need to signal/wait on individual containers. This CL adds two new messages, ContainerSignal and ContainerWait. These messages include the id of the container to signal/wait. The controller inside the sandbox receives these messages and signals/waits on the appropriate process inside the sandbox. The container id is plumbed into the sandbox, but it currently is not used. We still end up signaling/waiting on PID 1 in all cases. Once we actually have multiple containers inside the sandbox, we will need to keep some sort of map of container id -> pid (or possibly pid namespace), and signal/kill the appropriate process for the container. PiperOrigin-RevId: 197028366 Change-Id: I07b4d5dc91ecd2affc1447e6b4bdd6b0b7360895
2018-05-16Fix another socket Dirent refcount.Christopher Koch
PiperOrigin-RevId: 196893452 Change-Id: I5ea0f851fcabc5eac5859e61f15213323d996337
2018-05-16Verify that when offset address is not null, infile must be seekableChanwit Kaewkasi
Change-Id: Id247399baeac58f6cd774acabd5d1da05e5b5697 PiperOrigin-RevId: 196887768
2018-05-16netstack: make TCP endpoint closed and error state cleanup work synchronous.Zhaozhong Ni
So that when saving TCP endpoint in these states, there is no pending or background activities. Also lift tcp network save rejection error to tcpip package. PiperOrigin-RevId: 196886839 Change-Id: I0fe73750f2743ec7e62d139eb2cec758c5dd6698
2018-05-16Refcount socket Dirents correctly.Christopher Koch
This should fix the socket Dirent memory leak. fs.NewFile takes a new reference. It should hold the *only* reference. DecRef that socket Dirent. Before the globalDirentMap was introduced, a mis-refcounted Dirent would be garbage collected when all references to it were gone. For socket Dirents, this meant that they would be garbage collected when the associated fs.Files disappeared. After the globalDirentMap, Dirents *must* be reference-counted correctly to be garbage collected, as Dirents remove themselves from the global map when their refcount goes to -1 (see Dirent.destroy). That removes the last pointer to that Dirent. PiperOrigin-RevId: 196878973 Change-Id: Ic7afcd1de97c7101ccb13be5fc31de0fb50963f0
2018-05-16Release mutex in BidirectionalConnect to avoid deadlock.Brian Geffon
When doing a BidirectionalConnect we don't need to continue holding the ConnectingEndpoint's mutex when creating the NewConnectedEndpoint as it was held during the Connect. Additionally, we're not holding the baseEndpoint mutex while Unregistering an event. PiperOrigin-RevId: 196875557 Change-Id: Ied4ceed89de883121c6cba81bc62aa3a8549b1e9
2018-05-15Fix KVM EFAULT handling.Adin Scannell
PiperOrigin-RevId: 196781718 Change-Id: I889766eed871929cdc247c6b9aa634398adea9c9
2018-05-15Simplify KVM invalidation logic.Adin Scannell
PiperOrigin-RevId: 196780209 Change-Id: I89f39eec914ce54a7c6c4f28e1b6d5ff5a7dd38d
2018-05-15Simplify KVM state handling.Adin Scannell
This also removes the dependency on tmutex. PiperOrigin-RevId: 196764317 Change-Id: I523fb67454318e1a2ca9da3a08e63bfa3c1eeed3
2018-05-15sentry: Replaces saving of inet.Stack with retrieval via context.Kevin Krakauer
Previously, inet.Stack was referenced in 2 structs in sentry/socket that can be saved/restored. If an app is saved and restored on another machine, it may try to use the old stack, which will have been replaced by a new stack on the new machine. PiperOrigin-RevId: 196733985 Change-Id: I6a8cfe73b5d7a90749734677dada635ab3389cb9
2018-05-15Fix problem with sendfile(2) writing less dataFabricio Voznika
When the amount of data read is more than the amount written, sendfile would not adjust 'in file' position and would resume from the wrong location. Closes #33 PiperOrigin-RevId: 196731287 Change-Id: Ia219895dd765016ed9e571fd5b366963c99afb27
2018-05-15Refactor the Sandbox package into Sandbox + Container.Nicolas Lacasse
This is a necessary prerequisite for supporting multiple containers in a single sandbox. All the commands (in cmd package) now call operations on Containers (container package). When a Container first starts, it will create a Sandbox with the same ID. The Sandbox class is now simpler, as it only knows how to create boot/gofer processes, and how to forward commands into the running boot process. There are TODOs sprinkled around for additional support for multiple containers. Most notably, we need to detect when a container is intended to run in an existing sandbox (by reading the metadata), and then have some way to signal to the sandbox to start a new container. Other urpc calls into the sandbox need to pass the container ID, so the sandbox can run the operation on the given container. These are only half-plummed through right now. PiperOrigin-RevId: 196688269 Change-Id: I1ecf4abbb9dd8987a53ae509df19341aaf42b5b0
2018-05-14Disable INVPCID check; it's not used.Adin Scannell
PiperOrigin-RevId: 196615029 Change-Id: Idfa383a9aee6a9397167a4231ce99d0b0e5b9912
2018-05-14Make KVM system call first check.Adin Scannell
PiperOrigin-RevId: 196613447 Change-Id: Ib76902896798f072c3031b0c5cf7b433718928b7
2018-05-14Simplify KVM host map handling.Adin Scannell
PiperOrigin-RevId: 196611084 Change-Id: I6afa6b01e1dcd2aa9776dfc0f910874cc6b8d72c
2018-05-14Ignore spurious KVM emulation failures.Adin Scannell
PiperOrigin-RevId: 196609789 Change-Id: Ie261eea3b7fa05b6c348ca93e229de26cbd4dc7d
2018-05-11sentry: Adds canonical mode support.Kevin Krakauer
PiperOrigin-RevId: 196331627 Change-Id: Ifef4485f8202c52481af317cedd52d2ef48cea6a
2018-05-11netstack: TCP connecting state endpoint save / restore support.Zhaozhong Ni
PiperOrigin-RevId: 196325647 Change-Id: I850eb4a29b9c679da4db10eb164bbdf967690663
2018-05-11netstack: release rcv lock after ping socket save is done.Zhaozhong Ni
PiperOrigin-RevId: 196324694 Change-Id: Ia3a48976433f21622eacb4a38fefe7143ca5e31b
2018-05-11Remove error return from AddressSpace.Release()Michael Pratt
PiperOrigin-RevId: 196291289 Change-Id: Ie3487be029850b0b410b82416750853a6c4a2b00
2018-05-11Implement MAP_32BIT.Jamie Liu
PiperOrigin-RevId: 196281052 Change-Id: Ie620a0f983a1bf2570d0003d4754611879335c1c
2018-05-11Update README to point to nightly builds.Nicolas Lacasse
The "install from source" section is moved under "advanced" header, right before the testing section. PiperOrigin-RevId: 196271666 Change-Id: I653ac0a2fa4661c96a0cb3daf3528c2109fed8d7
2018-05-10Fix failure to rename directoryFabricio Voznika
os.Rename validates that the target doesn't exist, which is different from syscall.Rename which replace the target if both are directories. fsgofer needs the syscall behavior. PiperOrigin-RevId: 196194630 Change-Id: I87d08cad88b5ef310b245cd91647c4f5194159d8
2018-05-10Display the current git revision in the info blockChanwit Kaewkasi
Change-Id: I9737cc680968033ba82c95bb04cc482fcaa12642 PiperOrigin-RevId: 196192683
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