1 files changed, 0 insertions, 95 deletions
diff --git a/pkg/sentry/syscalls/linux/vfs2/sys_read.go b/pkg/sentry/syscalls/linux/vfs2/sys_read.go
deleted file mode 100644
index 7667524c7..000000000
--- a/pkg/sentry/syscalls/linux/vfs2/sys_read.go
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package vfs2
-
-import (
-	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/kernel"
-	"gvisor.dev/gvisor/pkg/sentry/syscalls/linux"
-	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/syserror"
-	"gvisor.dev/gvisor/pkg/usermem"
-	"gvisor.dev/gvisor/pkg/waiter"
-)
-
-const (
-	// EventMaskRead contains events that can be triggered on reads.
-	EventMaskRead = waiter.EventIn | waiter.EventHUp | waiter.EventErr
-)
-
-// Read implements linux syscall read(2).  Note that we try to get a buffer that
-// is exactly the size requested because some applications like qemu expect
-// they can do large reads all at once.  Bug for bug.  Same for other read
-// calls below.
-func Read(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallControl, error) {
-	fd := args[0].Int()
-	addr := args[1].Pointer()
-	size := args[2].SizeT()
-
-	file := t.GetFileVFS2(fd)
-	if file == nil {
-		return 0, nil, syserror.EBADF
-	}
-	defer file.DecRef()
-
-	// Check that the size is legitimate.
-	si := int(size)
-	if si < 0 {
-		return 0, nil, syserror.EINVAL
-	}
-
-	// Get the destination of the read.
-	dst, err := t.SingleIOSequence(addr, si, usermem.IOOpts{
-		AddressSpaceActive: true,
-	})
-	if err != nil {
-		return 0, nil, err
-	}
-
-	n, err := read(t, file, dst, vfs.ReadOptions{})
-	t.IOUsage().AccountReadSyscall(n)
-	return uintptr(n), nil, linux.HandleIOErrorVFS2(t, n != 0, err, kernel.ERESTARTSYS, "read", file)
-}
-
-func read(t *kernel.Task, file *vfs.FileDescription, dst usermem.IOSequence, opts vfs.ReadOptions) (int64, error) {
-	n, err := file.Read(t, dst, opts)
-	if err != syserror.ErrWouldBlock {
-		return n, err
-	}
-
-	// Register for notifications.
-	w, ch := waiter.NewChannelEntry(nil)
-	file.EventRegister(&w, EventMaskRead)
-
-	total := n
-	for {
-		// Shorten dst to reflect bytes previously read.
-		dst = dst.DropFirst(int(n))
-
-		// Issue the request and break out if it completes with anything other than
-		// "would block".
-		n, err := file.Read(t, dst, opts)
-		total += n
-		if err != syserror.ErrWouldBlock {
-			break
-		}
-		if err := t.Block(ch); err != nil {
-			break
-		}
-	}
-	file.EventUnregister(&w)
-
-	return total, err
-}