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Author SHA1 Message Date
Kevin KrakauerandgVisor bot 370672e989 prohibit direct use of sync/atomic (u)int64 functions 
All atomic 64 bit ints are changed to atomicbitops.(Ui|I)nt64. A nogo checker
enforces that sync/atomic 64 bit functions are not called.

For reviewers: the interesting changes are in the atomicbitops and checkaligned
packages.

Why do this?
- It is very easy to accidentally use atomic values without sync/atomic funcs.
- We have checkatomics, but this is optional and is forgotten in several places.
  - Using a type+checker to enforce this seems less error prone and simpler.
- We get NoCopy protection.
- Use of 64 bit atomics can break 32 bit builds. We have types to handle this
  without any runtime cost, so we might as well use them.

PiperOrigin-RevId: 440473398
 2022-04-08 16:06:26 -07:00
Adin ScannellandgVisor bot 0a7075f38a Add basic stateify annotations. 
Updates #1663

PiperOrigin-RevId: 333539293
 2020-09-24 10:13:04 -07:00
Nayana BidariandgVisor bot b2ae7ea1bb Plumbing context.Context to DecRef() and Release(). 
context is passed to DecRef() and Release() which is
needed for SO_LINGER implementation.

PiperOrigin-RevId: 324672584
 2020-08-03 13:36:05 -07:00
Fabricio VoznikaandgVisor bot 67565078bb Implement flock(2) in VFS2 
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
 2020-06-09 18:46:42 -07:00
Jamie LiuandgVisor bot 8dcedc953a Add //pkg/sentry/devices/memdev. 
PiperOrigin-RevId: 292165063
 2020-01-29 10:09:31 -08:00