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path: root/pkg/sentry/fs/mounts.go
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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
2020-01-17Fix data race in MountNamespace.resolve.Nicolas Lacasse
We must hold fs.renameMu to access Dirent.parent. PiperOrigin-RevId: 290340804
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
2019-08-27Mount volumes as super userFabricio Voznika
This used to be the case, but regressed after a recent change. Also made a few fixes around it and clean up the code a bit. Closes #720 PiperOrigin-RevId: 265717496
2019-08-02Remove kernel.mounts.Nicolas Lacasse
We can get the mount namespace from the CreateProcessArgs in all cases where we need it. This also gets rid of kernel.Destroy method, since the only thing it was doing was DecRefing the mounts. Removing the need to call kernel.SetRootMountNamespace also allowed for some more simplifications in the container fs setup code. PiperOrigin-RevId: 261357060
2019-07-30Add feature to launch Sentry from an open host FD.Zach Koopmans
Adds feature to launch from an open host FD instead of a binary_path. The FD should point to a valid executable and most likely be statically compiled. If the executable is not statically compiled, the loader will search along the interpreter paths, which must be able to be resolved in the Sandbox's file system or start will fail. PiperOrigin-RevId: 260756825
2019-07-08Don't try to execute a file that is not regular.Nicolas Lacasse
PiperOrigin-RevId: 257037608
2019-06-28Add finalizer on AtomicRefCount to check for leaks.Ian Gudger
PiperOrigin-RevId: 255711454
2019-06-19Add MountNamespace to task.Nicolas Lacasse
This allows tasks to have distinct mount namespace, instead of all sharing the kernel's root mount namespace. Currently, the only way for a task to get a different mount namespace than the kernel's root is by explicitly setting a different MountNamespace in CreateProcessArgs, and nothing does this (yet). In a follow-up CL, we will set CreateProcessArgs.MountNamespace when creating a new container inside runsc. Note that "MountNamespace" is a poor term for this thing. It's more like a distinct VFS tree. When we get around to adding real mount namespaces, this will need a better naem. PiperOrigin-RevId: 254009310
2019-06-13Plumb context through more layers of filesytem.Ian Gudger
All functions which allocate objects containing AtomicRefCounts will soon need a context. PiperOrigin-RevId: 253147709
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
2019-05-23Initial support for bind mountsFabricio Voznika
Separate MountSource from Mount. This is needed to allow mounts to be shared by multiple containers within the same pod. PiperOrigin-RevId: 249617810 Change-Id: Id2944feb7e4194951f355cbe6d4944ae3c02e468
2019-04-29Change copyright notice to "The gVisor Authors"Michael Pratt
Based on the guidelines at https://opensource.google.com/docs/releasing/authors/. 1. $ rg -l "Google LLC" | xargs sed -i 's/Google LLC.*/The gVisor Authors./' 2. Manual fixup of "Google Inc" references. 3. Add AUTHORS file. Authors may request to be added to this file. 4. Point netstack AUTHORS to gVisor AUTHORS. Drop CONTRIBUTORS. Fixes #209 PiperOrigin-RevId: 245823212 Change-Id: I64530b24ad021a7d683137459cafc510f5ee1de9
2018-12-04Max link traversals should be for an entire path.Brian Geffon
The number of symbolic links that are allowed to be followed are for a full path and not just a chain of symbolic links. PiperOrigin-RevId: 224047321 Change-Id: I5e3c4caf66a93c17eeddcc7f046d1e8bb9434a40
2018-10-19Use correct company name in copyright headerIan Gudger
PiperOrigin-RevId: 217951017 Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
2018-09-07runsc: Support multi-container exec.Nicolas Lacasse
We must use a context.Context with a Root Dirent that corresponds to the container's chroot. Previously we were using the root context, which does not have a chroot. Getting the correct context required refactoring some of the path-lookup code. We can't lookup the path without a context.Context, which requires kernel.CreateProcArgs, which we only get inside control.Execute. So we have to do the path lookup much later than we previously were. PiperOrigin-RevId: 212064734 Change-Id: I84a5cfadacb21fd9c3ab9c393f7e308a40b9b537
2018-08-28fs: Add tests for dirent ref counting with an overlay.Nicolas Lacasse
PiperOrigin-RevId: 210614669 Change-Id: I408365ff6d6c7765ed7b789446d30e7079cbfc67
2018-08-02Automated rollback of changelist 207037226Zhaozhong Ni
PiperOrigin-RevId: 207125440 Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
2018-08-01Automated rollback of changelist 207007153Michael Pratt
PiperOrigin-RevId: 207037226 Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
2018-08-01stateify: convert all packages to use explicit mode.Zhaozhong Ni
PiperOrigin-RevId: 207007153 Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
2018-05-03Don't prematurely remove MountSource from parent's children.Christopher Koch
Otherwise, mounts that fail to be unmounted (EBUSY) will be removed from the children list anyway. At this point, this just affects /proc/pid/mounts and /proc/pid/mountinfo. PiperOrigin-RevId: 195267588 Change-Id: I79114483d73b90f9a7d764a7d513b5b2f251182e
2018-04-28Check in gVisor.Googler
PiperOrigin-RevId: 194583126 Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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