From 9cdae51feca5cee9faa198161b92a0aeece52d6c Mon Sep 17 00:00:00 2001 From: Adin Scannell Date: Tue, 21 May 2019 15:17:05 -0700 Subject: Add basic plumbing for splice and stub implementation. This does not actually implement an efficient splice or sendfile. Rather, it adds a generic plumbing to the file internals so that this can be added. All file implementations use the stub fileutil.NoSplice implementation, which causes sendfile and splice to fall back to an internal copy. A basic splice system call interface is added, along with a test. PiperOrigin-RevId: 249335960 Change-Id: Ic5568be2af0a505c19e7aec66d5af2480ab0939b --- pkg/sentry/loader/vdso.go | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'pkg/sentry/loader') diff --git a/pkg/sentry/loader/vdso.go b/pkg/sentry/loader/vdso.go index 207d8ed3d..4e73527cf 100644 --- a/pkg/sentry/loader/vdso.go +++ b/pkg/sentry/loader/vdso.go @@ -52,15 +52,16 @@ func (f *fileContext) Value(key interface{}) interface{} { // byteReader implements fs.FileOperations for reading from a []byte source. type byteReader struct { - waiter.AlwaysReady `state:"nosave"` fsutil.FileNoFsync `state:"nosave"` fsutil.FileNoIoctl `state:"nosave"` fsutil.FileNoMMap `state:"nosave"` + fsutil.FileNoSplice `state:"nosave"` fsutil.FileNoopFlush `state:"nosave"` fsutil.FileNoopRelease `state:"nosave"` fsutil.FileNotDirReaddir `state:"nosave"` fsutil.FilePipeSeek `state:"nosave"` fsutil.FileUseInodeUnstableAttr `state:"nosave"` + waiter.AlwaysReady `state:"nosave"` data []byte } -- cgit v1.2.3