Remove usermem dependency from marshal

Both marshal and usermem are depended on by many packages and a dependency on
marshal can often create circular dependencies. marshal should consider adding
internal dependencies carefully moving forward.

Fixes #6160

PiperOrigin-RevId: 379199882

2 files changed, 0 insertions, 27 deletions

diff --git a/pkg/marshal/primitive/BUILD b/pkg/marshal/primitive/BUILD
index 190b57c29..6e5ce136d 100644
--- a/pkg/marshal/primitive/BUILD
+++ b/pkg/marshal/primitive/BUILD
@@ -12,9 +12,7 @@ go_library(
         "//:sandbox",
     ],
     deps = [
-        "//pkg/context",
         "//pkg/hostarch",
         "//pkg/marshal",
-        "//pkg/usermem",
     ],
 )
diff --git a/pkg/marshal/primitive/primitive.go b/pkg/marshal/primitive/primitive.go
index 6f38992b7..1c49cf082 100644
--- a/pkg/marshal/primitive/primitive.go
+++ b/pkg/marshal/primitive/primitive.go
@@ -19,10 +19,8 @@ package primitive
 import (
 	"io"
 
-	"gvisor.dev/gvisor/pkg/context"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/marshal"
-	"gvisor.dev/gvisor/pkg/usermem"
 )
 
 // Int8 is a marshal.Marshallable implementation for int8.
@@ -400,26 +398,3 @@ func CopyStringOut(cc marshal.CopyContext, addr hostarch.Addr, src string) (int,
 	srcP := ByteSlice(src)
 	return srcP.CopyOut(cc, addr)
 }
-
-// IOCopyContext wraps an object implementing hostarch.IO to implement
-// marshal.CopyContext.
-type IOCopyContext struct {
-	Ctx  context.Context
-	IO   usermem.IO
-	Opts usermem.IOOpts
-}
-
-// CopyScratchBuffer implements marshal.CopyContext.CopyScratchBuffer.
-func (i *IOCopyContext) CopyScratchBuffer(size int) []byte {
-	return make([]byte, size)
-}
-
-// CopyOutBytes implements marshal.CopyContext.CopyOutBytes.
-func (i *IOCopyContext) CopyOutBytes(addr hostarch.Addr, b []byte) (int, error) {
-	return i.IO.CopyOut(i.Ctx, addr, b, i.Opts)
-}
-
-// CopyInBytes implements marshal.CopyContext.CopyInBytes.
-func (i *IOCopyContext) CopyInBytes(addr hostarch.Addr, b []byte) (int, error) {
-	return i.IO.CopyIn(i.Ctx, addr, b, i.Opts)
-}