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Diffstat (limited to 'pkg/sentry/kernel/pipe/pipe.go')
-rw-r--r--pkg/sentry/kernel/pipe/pipe.go28
1 files changed, 22 insertions, 6 deletions
diff --git a/pkg/sentry/kernel/pipe/pipe.go b/pkg/sentry/kernel/pipe/pipe.go
index 93b50669f..1a1b38f83 100644
--- a/pkg/sentry/kernel/pipe/pipe.go
+++ b/pkg/sentry/kernel/pipe/pipe.go
@@ -98,7 +98,7 @@ type Pipe struct {
// NewPipe initializes and returns a pipe.
//
// N.B. The size and atomicIOBytes will be bounded.
-func NewPipe(ctx context.Context, isNamed bool, sizeBytes, atomicIOBytes int64) *Pipe {
+func NewPipe(isNamed bool, sizeBytes, atomicIOBytes int64) *Pipe {
if sizeBytes < MinimumPipeSize {
sizeBytes = MinimumPipeSize
}
@@ -111,17 +111,33 @@ func NewPipe(ctx context.Context, isNamed bool, sizeBytes, atomicIOBytes int64)
if atomicIOBytes > sizeBytes {
atomicIOBytes = sizeBytes
}
- return &Pipe{
- isNamed: isNamed,
- max: sizeBytes,
- atomicIOBytes: atomicIOBytes,
+ var p Pipe
+ initPipe(&p, isNamed, sizeBytes, atomicIOBytes)
+ return &p
+}
+
+func initPipe(pipe *Pipe, isNamed bool, sizeBytes, atomicIOBytes int64) {
+ if sizeBytes < MinimumPipeSize {
+ sizeBytes = MinimumPipeSize
+ }
+ if sizeBytes > MaximumPipeSize {
+ sizeBytes = MaximumPipeSize
+ }
+ if atomicIOBytes <= 0 {
+ atomicIOBytes = 1
+ }
+ if atomicIOBytes > sizeBytes {
+ atomicIOBytes = sizeBytes
}
+ pipe.isNamed = isNamed
+ pipe.max = sizeBytes
+ pipe.atomicIOBytes = atomicIOBytes
}
// NewConnectedPipe initializes a pipe and returns a pair of objects
// representing the read and write ends of the pipe.
func NewConnectedPipe(ctx context.Context, sizeBytes, atomicIOBytes int64) (*fs.File, *fs.File) {
- p := NewPipe(ctx, false /* isNamed */, sizeBytes, atomicIOBytes)
+ p := NewPipe(false /* isNamed */, sizeBytes, atomicIOBytes)
// Build an fs.Dirent for the pipe which will be shared by both
// returned files.