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Implement flock(2) in VFS2

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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
This commit is contained in:
Fabricio Voznika
2020-06-09 18:46:42 -07:00
committed by gVisor bot
parent 52c922f7c0
commit 67565078bb
67 changed files with 472 additions and 283 deletions
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pkg/sentry/devices/memdev/null.go
+1
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@@ -43,6 +43,7 @@ type nullFD struct {
vfsfd vfs.FileDescription
vfs.FileDescriptionDefaultImpl
vfs.DentryMetadataFileDescriptionImpl
vfs.NoLockFD
}
// Release implements vfs.FileDescriptionImpl.Release.