Remove remaining references to vfs2.

PiperOrigin-RevId: 493998299

images/syzkaller/default-gvisor-config.cfg

@@ -10,6 +10,6 @@
         "type": "gvisor",
         "vm": {
                 "count": 1,
-                "runsc_args": "--debug --network none --platform ptrace --vfs2 -net-raw -watchdog-action=panic"
+                "runsc_args": "--debug --network none --platform ptrace -net-raw -watchdog-action=panic"
         }
 }

pkg/sentry/loader/elf.go

@@ -90,14 +90,8 @@ type elfInfo struct {
 	sharedObject bool
 }
 
-// fullReader interface extracts the ReadFull method from fsbridge.File so that
-// client code does not need to define an entire fsbridge.File when only read
-// functionality is needed.
-//
-// TODO(gvisor.dev/issue/1035): Once VFS2 ships, rewrite this to wrap
-// vfs.FileDescription's PRead/Read instead.
 type fullReader interface {
-	// ReadFull is the same as fsbridge.File.ReadFull.
+	// ReadFull is the same as vfs.FileDescription.ReadFull.
 	ReadFull(ctx context.Context, dst usermem.IOSequence, offset int64) (int64, error)
 }
 

pkg/sentry/loader/vdso.go

@@ -55,6 +55,7 @@ type byteFullReader struct {
 	data []byte
 }
 
+// ReadFull implements fullReader.ReadFull.
 func (b *byteFullReader) ReadFull(ctx context.Context, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
 		return 0, linuxerr.EINVAL

pkg/sentry/socket/unix/unix.go

@@ -417,12 +417,6 @@ func (*provider) Pair(t *kernel.Task, stype linux.SockType, protocol int) (*vfs.
 	return s1, s2, nil
 }
 
-// socketOpsCommon contains the socket operations common to VFS1 and VFS2.
-//
-// +stateify savable
-type socketOpsCommon struct {
-}
-
 func (s *Socket) isPacket() bool {
 	switch s.stype {
 	case linux.SOCK_DGRAM, linux.SOCK_SEQPACKET:

pkg/test/dockerutil/README.md

@@ -35,8 +35,7 @@ use pprof profiles generated by `runsc debug`. The profiler will generate Block,
 CPU, Heap, Goroutine, and Mutex profiles. To generate profiles:
 
 *   Install runsc with the `--profile` flag: `make configure RUNTIME=myrunsc
-    ARGS="--profile"` Also add other flags with ARGS like `--platform=kvm` or
-    `--vfs2`.
+    ARGS="--profile"` Also add other flags with ARGS like `--platform=kvm`.
 *   Restart docker: `sudo service docker restart`
 
 To run and generate CPU profiles run:

test/fuse/README.md

@@ -107,19 +107,16 @@ complete a command and when the server awaits the next instruction.
 
 ## Running the tests
 
-Based on syscall tests, FUSE tests generate targets only with vfs2 and fuse
-enabled. The corresponding targets end in `_fuse`.
-
 For example, to run fuse test in `stat_test.cc`:
 
 ```bash
-$ bazel test //test/fuse:stat_test_runsc_ptrace_vfs2_fuse
+$ bazel test //test/fuse:stat_test_runsc_ptrace
 ```
 
 Test all targets tagged with fuse:
 
 ```bash
-$ bazel test --test_tag_filters=fuse //test/fuse/...
+$ bazel test //test/fuse/...
 ```
 
 ## Writing a new FUSE test