diff options
| author | Adin Scannell <ascannell@google.com> | 2019-05-21 15:17:05 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-05-21 15:18:12 -0700 |
| commit | 9cdae51feca5cee9faa198161b92a0aeece52d6c (patch) | |
| tree | 9a2a22b2e2c99f70505d9d8700bdc8dcac06e11d /pkg/sentry/fs/tmpfs | |
| parent | adeb99709bda40e62363b229464b8ae3a90e237b (diff) | |
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
Diffstat (limited to 'pkg/sentry/fs/tmpfs')
| -rw-r--r-- | pkg/sentry/fs/tmpfs/file_regular.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/pkg/sentry/fs/tmpfs/file_regular.go b/pkg/sentry/fs/tmpfs/file_regular.go index 1ef256511..d1c163879 100644 --- a/pkg/sentry/fs/tmpfs/file_regular.go +++ b/pkg/sentry/fs/tmpfs/file_regular.go @@ -28,14 +28,15 @@ import ( // // +stateify savable type regularFileOperations struct { - waiter.AlwaysReady `state:"nosave"` fsutil.FileNoopRelease `state:"nosave"` fsutil.FileGenericSeek `state:"nosave"` fsutil.FileNotDirReaddir `state:"nosave"` fsutil.FileNoopFsync `state:"nosave"` fsutil.FileNoopFlush `state:"nosave"` fsutil.FileNoIoctl `state:"nosave"` + fsutil.FileNoSplice `state:"nosave"` fsutil.FileUseInodeUnstableAttr `state:"nosave"` + waiter.AlwaysReady `state:"nosave"` // iops is the InodeOperations of a regular tmpfs file. It is // guaranteed to be the same as file.Dirent.Inode.InodeOperations, |