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-rw-r--r--pkg/sentry/vfs/epoll.go16
1 files changed, 7 insertions, 9 deletions
diff --git a/pkg/sentry/vfs/epoll.go b/pkg/sentry/vfs/epoll.go
index 1b5af9f73..754e76aec 100644
--- a/pkg/sentry/vfs/epoll.go
+++ b/pkg/sentry/vfs/epoll.go
@@ -331,11 +331,9 @@ func (ep *EpollInstance) removeLocked(epi *epollInterest) {
ep.mu.Unlock()
}
-// ReadEvents reads up to len(events) ready events into events and returns the
-// number of events read.
-//
-// Preconditions: len(events) != 0.
-func (ep *EpollInstance) ReadEvents(events []linux.EpollEvent) int {
+// ReadEvents appends up to maxReady events to events and returns the updated
+// slice of events.
+func (ep *EpollInstance) ReadEvents(events []linux.EpollEvent, maxEvents int) []linux.EpollEvent {
i := 0
// Hot path: avoid defer.
ep.mu.Lock()
@@ -368,16 +366,16 @@ func (ep *EpollInstance) ReadEvents(events []linux.EpollEvent) int {
requeue.PushBack(epi)
}
// Report ievents.
- events[i] = linux.EpollEvent{
+ events = append(events, linux.EpollEvent{
Events: ievents.ToLinux(),
Data: epi.userData,
- }
+ })
i++
- if i == len(events) {
+ if i == maxEvents {
break
}
}
ep.ready.PushBackList(&requeue)
ep.mu.Unlock()
- return i
+ return events
}