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authorDean Deng <deandeng@google.com>2020-01-17 08:10:14 -0800
committergVisor bot <gvisor-bot@google.com>2020-01-17 08:11:52 -0800
commit345df7cab48ac79bccf2620900cd972b3026296d (patch)
tree5f3f206fd1a56853daeb9401c074077e6e1f5842 /pkg/sentry/fs/lock
parent19b4653147c8ec1cd2cf6e2a8f9bfc7865a5f850 (diff)
Add explanation for implementation of BSD full file locks.
PiperOrigin-RevId: 290272560
Diffstat (limited to 'pkg/sentry/fs/lock')
-rw-r--r--pkg/sentry/fs/lock/lock.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/fs/lock/lock.go b/pkg/sentry/fs/lock/lock.go
index 41b040818..926538d90 100644
--- a/pkg/sentry/fs/lock/lock.go
+++ b/pkg/sentry/fs/lock/lock.go
@@ -78,6 +78,9 @@ const (
)
// LockEOF is the maximal possible end of a regional file lock.
+//
+// A BSD-style full file lock can be represented as a regional file lock from
+// offset 0 to LockEOF.
const LockEOF = math.MaxUint64
// Lock is a regional file lock. It consists of either a single writer