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Prior to cl/318010298, //pkg/state couldn't handle pointers to struct fields,
which meant that it couldn't handle intrusive linked lists, which meant that it
couldn't handle waiter.Queue, which meant that it couldn't handle epoll. As a
result, VFS1 unregisters all epoll waiters before saving and re-registers them
after loading, and waitable VFS1 file implementations tag their waiter.Queues
state:"nosave" (causing them to be skipped by the save/restore machinery) or
state:"zerovalue" (causing them to only be checked for zero-value-equality on
save).
VFS2 required cl/318010298 to support save/restore (due to the Impl inheritance
pattern used by vfs.FileDescription, vfs.Dentry, etc.); correspondingly, VFS2
epoll assumes that waiter.Queues *will be* saved and loaded correctly, and VFS2
file implementations do not tag waiter.Queues.
Some waiter.Queues, e.g. pipe.Pipe.Queue and kernel.Task.signalQueue, are used
by both VFS1 and VFS2 (the latter via signalfd); as a result of the above,
tagging these Queues state:"nosave" or state:"zerovalue" breaks VFS2 epoll.
Remove VFS1 epoll unregistration before saving (bringing it in line with VFS2),
and remove these tags from all waiter.Queues.
Also clean up after the epoll test added by cl/402323053, which implied this
issue (by instantiating DisableSave in the new test) without reporting it.
PiperOrigin-RevId: 402596216
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The syscall package has been deprecated in favor of golang.org/x/sys.
Note that syscall is still used in the following places:
- pkg/sentry/socket/hostinet/stack.go: some netlink related functionalities
are not yet available in golang.org/x/sys.
- syscall.Stat_t is still used in some places because os.FileInfo.Sys() still
returns it and not unix.Stat_t.
Updates #214
PiperOrigin-RevId: 360701387
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Fixes #5113.
PiperOrigin-RevId: 353313374
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LockFD is the generic implementation that can be embedded in
FileDescriptionImpl implementations. Unique lock ID is
maintained in vfs.FileDescription and is created on demand.
Updates #1480
PiperOrigin-RevId: 315604825
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PiperOrigin-RevId: 290272560
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* 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
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Addresses obvious typos, in the documentation only.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/443 from Pixep:fix/documentation-spelling 4d0688164eafaf0b3010e5f4824b35d1e7176d65
PiperOrigin-RevId: 255477779
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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
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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
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PiperOrigin-RevId: 217951017
Change-Id: Ie08bf6987f98467d07457bcf35b5f1ff6e43c035
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PiperOrigin-RevId: 213328293
Change-Id: I4164133e6f709ecdb89ffbb5f7df3324c273860a
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PiperOrigin-RevId: 207125440
Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
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PiperOrigin-RevId: 207037226
Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
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PiperOrigin-RevId: 207007153
Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
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PiperOrigin-RevId: 194583126
Change-Id: Ica1d8821a90f74e7e745962d71801c598c652463
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