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2020-04-22Move user home detection to its own library.Nicolas Lacasse
PiperOrigin-RevId: 307977689
2020-04-17Get /bin/true to run on VFS2Zach Koopmans
Included: - loader_test.go RunTest and TestStartSignal VFS2 - container_test.go TestAppExitStatus on VFS2 - experimental flag added to runsc to turn on VFS2 Note: shared mounts are not yet supported. PiperOrigin-RevId: 307070753
2020-04-14Merge pull request #2212 from aaronlu:dup_stdioFDsgVisor bot
PiperOrigin-RevId: 306477639
2020-02-20Initial network namespace support.gVisor bot
TCP/IP will work with netstack networking. hostinet doesn't work, and sockets will have the same behavior as it is now. Before the userspace is able to create device, the default loopback device can be used to test. /proc/net and /sys/net will still be connected to the root network stack; this is the same behavior now. Issue #1833 PiperOrigin-RevId: 296309389
2020-01-28Add vfs.FileDescription to FD tableFabricio Voznika
FD table now holds both VFS1 and VFS2 types and uses the correct one based on what's set. Parts of this CL are just initial changes (e.g. sys_read.go, runsc/main.go) to serve as a template for the remaining changes. Updates #1487 Updates #1623 PiperOrigin-RevId: 292023223
2020-01-27Update package locations.Adin Scannell
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
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
2019-12-06Merge pull request #1233 from xiaobo55x:compatLoggVisor bot
PiperOrigin-RevId: 284305935
2019-12-03Enable runsc compatLog support on arm64.Haibo Xu
Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I3fd5e552f5f03b5144ed52647f75af3b8253b1d6
2019-11-13Enable runsc/boot support on arm64.Haibo Xu
This patch also include a minor change to replace syscall.Dup2 with syscall.Dup3 which was missed in a previous commit(ref a25a976). Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I00beb9cc492e44c762ebaa3750201c63c1f7c2f3
2019-11-04Add NETLINK_KOBJECT_UEVENT socket supportMichael Pratt
NETLINK_KOBJECT_UEVENT sockets send udev-style messages for device events. gVisor doesn't have any device events, so our sockets don't need to do anything once created. systemd's device manager needs to be able to create one of these sockets. It also wants to install a BPF filter on the socket. Since we'll never send any messages, the filter would never be invoked, thus we just fake it out. Fixes #1117 Updates #1119 PiperOrigin-RevId: 278405893
2019-10-07Rename epsocket to netstack.Kevin Krakauer
PiperOrigin-RevId: 273365058
2019-09-25Remove centralized registration of protocols.Kevin Krakauer
Also removes the need for protocol names. PiperOrigin-RevId: 271186030
2019-09-23Always set HOME env var with `runsc exec`.Nicolas Lacasse
We already do this for `runsc run`, but need to do the same for `runsc exec`. PiperOrigin-RevId: 270793459
2019-08-02Stops container if gofer is killedFabricio Voznika
Each gofer now has a goroutine that polls on the FDs used to communicate with the sandbox. The respective gofer is destroyed if any of the FDs is closed. Closes #601 PiperOrigin-RevId: 261383725
2019-07-03Avoid importing platforms from many source filesAndrei Vagin
PiperOrigin-RevId: 256494243
2019-07-02Remove map from fd_map, change to fd_table.Adin Scannell
This renames FDMap to FDTable and drops the kernel.FD type, which had an entire package to itself and didn't serve much use (it was freely cast between types, and served as more of an annoyance than providing any protection.) Based on BenchmarkFDLookupAndDecRef-12, we can expect 5-10 ns per lookup operation, and 10-15 ns per concurrent lookup operation of savings. This also fixes two tangential usage issues with the FDMap. Namely, non-atomic use of NewFDFrom and associated calls to Remove (that are both racy and fail to drop the reference on the underlying file.) PiperOrigin-RevId: 256285890
2019-06-28Add finalizer on AtomicRefCount to check for leaks.Ian Gudger
PiperOrigin-RevId: 255711454
2019-06-13Update canonical repository.Adin Scannell
This can be merged after: https://github.com/google/gvisor-website/pull/77 or https://github.com/google/gvisor-website/pull/78 PiperOrigin-RevId: 253132620
2019-06-13Set the HOME environment variable (fixes #293)Ian Lewis
runsc will now set the HOME environment variable as required by POSIX. The user's home directory is retrieved from the /etc/passwd file located on the container's file system during boot. PiperOrigin-RevId: 253120627
2019-06-12gvisor/runsc: apply seccomp filters before parsing a state fileAndrei Vagin
PiperOrigin-RevId: 252869983
2019-06-11Add support to mount pod shared tmpfs mountsFabricio Voznika
Parse annotations containing 'gvisor.dev/spec/mount' that gives hints about how mounts are shared between containers inside a pod. This information can be used to better inform how to mount these volumes inside gVisor. For example, a volume that is shared between containers inside a pod can be bind mounted inside the sandbox, instead of being two independent mounts. For now, this information is used to allow the same tmpfs mounts to be shared between containers which wasn't possible before. PiperOrigin-RevId: 252704037
2019-06-07Move //pkg/sentry/memutil to //pkg/memutil.Jamie Liu
PiperOrigin-RevId: 252124156
2019-03-14Decouple filemem from platform and move it to pgalloc.MemoryFile.Jamie Liu
This is in preparation for improved page cache reclaim, which requires greater integration between the page cache and page allocator. PiperOrigin-RevId: 238444706 Change-Id: Id24141b3678d96c7d7dc24baddd9be555bffafe4
2019-03-05Add uncaught signal message to the user logFabricio Voznika
This help troubleshoot cases where the container is killed and the app logs don't show the reason. PiperOrigin-RevId: 236982883 Change-Id: I361892856a146cea5b04abaa3aedbf805e123724
2019-02-22Rename ping endpoints to icmp endpoints.Kevin Krakauer
PiperOrigin-RevId: 235248572 Change-Id: I5b0538b6feb365a98712c2a2d56d856fe80a8a09
2019-01-31Remove license commentsMichael Pratt
Nothing reads them and they can simply get stale. Generated with: $ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD PiperOrigin-RevId: 231818945 Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
2018-12-10Open source system call tests.Brian Geffon
PiperOrigin-RevId: 224886231 Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22
2018-11-20Internal change.Nicolas Lacasse
PiperOrigin-RevId: 221848471 Change-Id: I882fbe5ce7737048b2e1f668848e9c14ed355665
2018-11-13Internal change.Nicolas Lacasse
PiperOrigin-RevId: 221343626 Change-Id: I03d57293a555cf4da9952a81803b9f8463173c89
2018-10-23Track paths and provide a rename hook.Adin Scannell
This change also adds extensive testing to the p9 package via mocks. The sanity checks and type checks are moved from the gofer into the core package, where they can be more easily validated. PiperOrigin-RevId: 218296768 Change-Id: I4fc3c326e7bf1e0e140a454cbacbcc6fd617ab55
2018-10-20Add more unimplemented syscall eventsFabricio Voznika
Added events for *ctl syscalls that may have multiple different commands. For runsc, each syscall event is only logged once. For *ctl syscalls, use the cmd as identifier, not only the syscall number. PiperOrigin-RevId: 218015941 Change-Id: Ie3c19131ae36124861e9b492a7dbe1765d9e5e59
2018-10-11Add bare bones unsupported syscall loggingFabricio Voznika
This change introduces a new flags to create/run called --user-log. Logs to this files are visible to users and are meant to help debugging problems with their images and containers. For now only unsupported syscalls are sent to this log, and only minimum support was added. We can build more infrastructure around it as needed. PiperOrigin-RevId: 216735977 Change-Id: I54427ca194604991c407d49943ab3680470de2d0
2018-10-10Support for older Linux kernels without getrandomJonathan Giannuzzi
Change-Id: I1fb9f5b47a264a7617912f6f56f995f3c4c5e578 PiperOrigin-RevId: 216591484
2018-09-07Remove '--file-access=direct' optionFabricio Voznika
It was used before gofer was implemented and it's not supported anymore. BREAKING CHANGE: proxy-shared and proxy-exclusive options are now: shared and exclusive. PiperOrigin-RevId: 212017643 Change-Id: If029d4073fe60583e5ca25f98abb2953de0d78fd
2018-06-21Added functionality to create a RestoreEnvironment.Justine Olshan
Before a container can be restored, the mounts must be configured. The root and submounts and their key information is compiled into a RestoreEnvironment. Future code will be added to set this created environment before restoring a container. Tests to ensure the correct environment were added. PiperOrigin-RevId: 201544637 Change-Id: Ia894a8b0f80f31104d1c732e113b1d65a4697087
2018-06-20Add 'runsc debug' commandFabricio Voznika
It prints sandbox stacks to the log to help debug stuckness. I expect that many more options will be added in the future. PiperOrigin-RevId: 201405931 Change-Id: I87e560800cd5a5a7b210dc25a5661363c8c3a16e
2018-06-18Modified boot.go to allow for restores.Justine Olshan
A file descriptor was added as a flag to boot so a state file can restore a container that was checkpointed. PiperOrigin-RevId: 201068699 Change-Id: I18e96069488ffa3add468861397f3877725544aa
2018-06-12runsc: enable terminals in the sandbox.Kevin Krakauer
runsc now mounts the devpts filesystem, so you get a real terminal using ssh+sshd. PiperOrigin-RevId: 200244830 Change-Id: If577c805ad0138fda13103210fa47178d8ac6605
2018-06-08Drop capabilities not needed by GoferFabricio Voznika
PiperOrigin-RevId: 199808391 Change-Id: Ib37a4fb6193dc85c1f93bc16769d6aa41854b9d4
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
2018-05-01Add support for ping socketsIan Gudger
PiperOrigin-RevId: 195049322 Change-Id: I09f6dd58cf10a2e50e53d17d2823d540102913c5
2018-04-28Check in gVisor.Googler
PiperOrigin-RevId: 194583126 Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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