Merge release-20200818.0-74-g6f8fb7e0d (automated)

28 files changed, 86 insertions, 111 deletions

diff --git a/pkg/sentry/fsimpl/devpts/root_inode_refs.go b/pkg/sentry/fsimpl/devpts/root_inode_refs.go
index 051801202..4abb66431 100644
--- a/pkg/sentry/fsimpl/devpts/root_inode_refs.go
+++ b/pkg/sentry/fsimpl/devpts/root_inode_refs.go
@@ -2,11 +2,10 @@ package devpts
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/fuse/inode_refs.go b/pkg/sentry/fsimpl/fuse/inode_refs.go
index 6b9456e1d..4fb4d4da7 100644
--- a/pkg/sentry/fsimpl/fuse/inode_refs.go
+++ b/pkg/sentry/fsimpl/fuse/inode_refs.go
@@ -2,11 +2,10 @@ package fuse
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
index babb3f664..225f59782 100644
--- a/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
+++ b/pkg/sentry/fsimpl/host/connected_endpoint_refs.go
@@ -2,11 +2,10 @@ package host
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/host/inode_refs.go b/pkg/sentry/fsimpl/host/inode_refs.go
index 17f90ce4a..4075eae17 100644
--- a/pkg/sentry/fsimpl/host/inode_refs.go
+++ b/pkg/sentry/fsimpl/host/inode_refs.go
@@ -2,11 +2,10 @@ package host
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/kernfs/dentry_refs.go b/pkg/sentry/fsimpl/kernfs/dentry_refs.go
index 79863b3bc..f99d4941a 100644
--- a/pkg/sentry/fsimpl/kernfs/dentry_refs.go
+++ b/pkg/sentry/fsimpl/kernfs/dentry_refs.go
@@ -2,11 +2,10 @@ package kernfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
index 478b04bdd..2b258010e 100644
--- a/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
+++ b/pkg/sentry/fsimpl/kernfs/static_directory_refs.go
@@ -2,11 +2,10 @@ package kernfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
index 9431c1506..467c32752 100644
--- a/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/fd_dir_inode_refs.go
@@ -2,11 +2,10 @@ package proc
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
index 872b20eb0..3fcda0948 100644
--- a/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/fd_info_dir_inode_refs.go
@@ -2,11 +2,10 @@ package proc
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
index c6d9b3522..2da6801c2 100644
--- a/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/subtasks_inode_refs.go
@@ -2,11 +2,10 @@ package proc
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/task_inode_refs.go b/pkg/sentry/fsimpl/proc/task_inode_refs.go
index 714488450..b6e19844c 100644
--- a/pkg/sentry/fsimpl/proc/task_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/task_inode_refs.go
@@ -2,11 +2,10 @@ package proc
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
index 22d9cc488..6207364e4 100644
--- a/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
+++ b/pkg/sentry/fsimpl/proc/tasks_inode_refs.go
@@ -2,11 +2,10 @@ package proc
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/sys/dir_refs.go b/pkg/sentry/fsimpl/sys/dir_refs.go
index 89609b198..9d15d4c80 100644
--- a/pkg/sentry/fsimpl/sys/dir_refs.go
+++ b/pkg/sentry/fsimpl/sys/dir_refs.go
@@ -2,11 +2,10 @@ package sys
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/fsimpl/tmpfs/inode_refs.go b/pkg/sentry/fsimpl/tmpfs/inode_refs.go
index dbf0b2766..ff5e99c52 100644
--- a/pkg/sentry/fsimpl/tmpfs/inode_refs.go
+++ b/pkg/sentry/fsimpl/tmpfs/inode_refs.go
@@ -2,11 +2,10 @@ package tmpfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/fd_table_refs.go b/pkg/sentry/kernel/fd_table_refs.go
index ecba138ac..a630289c9 100644
--- a/pkg/sentry/kernel/fd_table_refs.go
+++ b/pkg/sentry/kernel/fd_table_refs.go
@@ -2,11 +2,10 @@ package kernel
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/fs_context_refs.go b/pkg/sentry/kernel/fs_context_refs.go
index fb2fde971..e8bb1e6ee 100644
--- a/pkg/sentry/kernel/fs_context_refs.go
+++ b/pkg/sentry/kernel/fs_context_refs.go
@@ -2,11 +2,10 @@ package kernel
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/process_group_refs.go b/pkg/sentry/kernel/process_group_refs.go
index 4ed6e6458..4b257d548 100644
--- a/pkg/sentry/kernel/process_group_refs.go
+++ b/pkg/sentry/kernel/process_group_refs.go
@@ -2,11 +2,10 @@ package kernel
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/session_refs.go b/pkg/sentry/kernel/session_refs.go
index f2e1bb797..204fdd060 100644
--- a/pkg/sentry/kernel/session_refs.go
+++ b/pkg/sentry/kernel/session_refs.go
@@ -2,11 +2,10 @@ package kernel
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/kernel/shm/shm_refs.go b/pkg/sentry/kernel/shm/shm_refs.go
index 51e07d0b3..4bffdd0b3 100644
--- a/pkg/sentry/kernel/shm/shm_refs.go
+++ b/pkg/sentry/kernel/shm/shm_refs.go
@@ -2,11 +2,10 @@ package shm
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/mm/aio_mappable_refs.go b/pkg/sentry/mm/aio_mappable_refs.go
index b99909f07..141747137 100644
--- a/pkg/sentry/mm/aio_mappable_refs.go
+++ b/pkg/sentry/mm/aio_mappable_refs.go
@@ -2,11 +2,10 @@ package mm
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/mm/special_mappable_refs.go b/pkg/sentry/mm/special_mappable_refs.go
index 035bbe690..0921a5d18 100644
--- a/pkg/sentry/mm/special_mappable_refs.go
+++ b/pkg/sentry/mm/special_mappable_refs.go
@@ -2,11 +2,10 @@ package mm
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/platform/ring0/defs_impl_arm64.go b/pkg/sentry/platform/ring0/defs_impl_arm64.go
index eda1e1484..9fb351879 100644
--- a/pkg/sentry/platform/ring0/defs_impl_arm64.go
+++ b/pkg/sentry/platform/ring0/defs_impl_arm64.go
@@ -4,10 +4,9 @@ import (
 	"fmt"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
+	"gvisor.dev/gvisor/pkg/usermem"
 	"io"
 	"reflect"
-
-	"gvisor.dev/gvisor/pkg/usermem"
 )
 
 // Useful bits.
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go
index 8da77cc68..0bf21f7d8 100644
--- a/pkg/sentry/socket/netstack/netstack.go
+++ b/pkg/sentry/socket/netstack/netstack.go
@@ -236,7 +236,7 @@ type commonEndpoint interface {
 
 	// SetSockOpt implements tcpip.Endpoint.SetSockOpt and
 	// transport.Endpoint.SetSockOpt.
-	SetSockOpt(interface{}) *tcpip.Error
+	SetSockOpt(tcpip.SettableSocketOption) *tcpip.Error
 
 	// SetSockOptBool implements tcpip.Endpoint.SetSockOptBool and
 	// transport.Endpoint.SetSockOptBool.
@@ -248,7 +248,7 @@ type commonEndpoint interface {
 
 	// GetSockOpt implements tcpip.Endpoint.GetSockOpt and
 	// transport.Endpoint.GetSockOpt.
-	GetSockOpt(interface{}) *tcpip.Error
+	GetSockOpt(tcpip.GettableSocketOption) *tcpip.Error
 
 	// GetSockOptBool implements tcpip.Endpoint.GetSockOptBool and
 	// transport.Endpoint.GetSockOpt.
@@ -1778,8 +1778,7 @@ func SetSockOpt(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, level int
 		t.Kernel().EmitUnimplementedEvent(t)
 	}
 
-	// Default to the old behavior; hand off to network stack.
-	return syserr.TranslateNetstackError(ep.SetSockOpt(struct{}{}))
+	return nil
 }
 
 // setSockOptSocket implements SetSockOpt when level is SOL_SOCKET.
@@ -1824,7 +1823,8 @@ func setSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, nam
 		}
 		name := string(optVal[:n])
 		if name == "" {
-			return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.BindToDeviceOption(0)))
+			v := tcpip.BindToDeviceOption(0)
+			return syserr.TranslateNetstackError(ep.SetSockOpt(&v))
 		}
 		s := t.NetworkContext()
 		if s == nil {
@@ -1832,7 +1832,8 @@ func setSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, nam
 		}
 		for nicID, nic := range s.Interfaces() {
 			if nic.Name == name {
-				return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.BindToDeviceOption(nicID)))
+				v := tcpip.BindToDeviceOption(nicID)
+				return syserr.TranslateNetstackError(ep.SetSockOpt(&v))
 			}
 		}
 		return syserr.ErrUnknownDevice
@@ -1898,7 +1899,8 @@ func setSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, nam
 			socket.SetSockOptEmitUnimplementedEvent(t, name)
 		}
 
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.OutOfBandInlineOption(v)))
+		opt := tcpip.OutOfBandInlineOption(v)
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.SO_NO_CHECK:
 		if len(optVal) < sizeOfInt32 {
@@ -1921,21 +1923,20 @@ func setSockOptSocket(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, nam
 		}
 
 		return syserr.TranslateNetstackError(
-			ep.SetSockOpt(tcpip.LingerOption{
+			ep.SetSockOpt(&tcpip.LingerOption{
 				Enabled: v.OnOff != 0,
 				Timeout: time.Second * time.Duration(v.Linger)}))
 
 	case linux.SO_DETACH_FILTER:
 		// optval is ignored.
 		var v tcpip.SocketDetachFilterOption
-		return syserr.TranslateNetstackError(ep.SetSockOpt(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&v))
 
 	default:
 		socket.SetSockOptEmitUnimplementedEvent(t, name)
 	}
 
-	// Default to the old behavior; hand off to network stack.
-	return syserr.TranslateNetstackError(ep.SetSockOpt(struct{}{}))
+	return nil
 }
 
 // setSockOptTCP implements SetSockOpt when level is SOL_TCP.
@@ -1982,7 +1983,8 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		if v < 1 || v > linux.MAX_TCP_KEEPIDLE {
 			return syserr.ErrInvalidArgument
 		}
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.KeepaliveIdleOption(time.Second * time.Duration(v))))
+		opt := tcpip.KeepaliveIdleOption(time.Second * time.Duration(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.TCP_KEEPINTVL:
 		if len(optVal) < sizeOfInt32 {
@@ -1993,7 +1995,8 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		if v < 1 || v > linux.MAX_TCP_KEEPINTVL {
 			return syserr.ErrInvalidArgument
 		}
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.KeepaliveIntervalOption(time.Second * time.Duration(v))))
+		opt := tcpip.KeepaliveIntervalOption(time.Second * time.Duration(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.TCP_KEEPCNT:
 		if len(optVal) < sizeOfInt32 {
@@ -2015,11 +2018,12 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		if v < 0 {
 			return syserr.ErrInvalidArgument
 		}
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.TCPUserTimeoutOption(time.Millisecond * time.Duration(v))))
+		opt := tcpip.TCPUserTimeoutOption(time.Millisecond * time.Duration(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.TCP_CONGESTION:
 		v := tcpip.CongestionControlOption(optVal)
-		if err := ep.SetSockOpt(v); err != nil {
+		if err := ep.SetSockOpt(&v); err != nil {
 			return syserr.TranslateNetstackError(err)
 		}
 		return nil
@@ -2030,7 +2034,8 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		}
 
 		v := int32(usermem.ByteOrder.Uint32(optVal))
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.TCPLingerTimeoutOption(time.Second * time.Duration(v))))
+		opt := tcpip.TCPLingerTimeoutOption(time.Second * time.Duration(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.TCP_DEFER_ACCEPT:
 		if len(optVal) < sizeOfInt32 {
@@ -2040,7 +2045,8 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		if v < 0 {
 			v = 0
 		}
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.TCPDeferAcceptOption(time.Second * time.Duration(v))))
+		opt := tcpip.TCPDeferAcceptOption(time.Second * time.Duration(v))
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&opt))
 
 	case linux.TCP_SYNCNT:
 		if len(optVal) < sizeOfInt32 {
@@ -2065,8 +2071,7 @@ func setSockOptTCP(t *kernel.Task, ep commonEndpoint, name int, optVal []byte) *
 		emitUnimplementedEventTCP(t, name)
 	}
 
-	// Default to the old behavior; hand off to network stack.
-	return syserr.TranslateNetstackError(ep.SetSockOpt(struct{}{}))
+	return nil
 }
 
 // setSockOptIPv6 implements SetSockOpt when level is SOL_IPV6.
@@ -2144,8 +2149,7 @@ func setSockOptIPv6(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, name
 		emitUnimplementedEventIPv6(t, name)
 	}
 
-	// Default to the old behavior; hand off to network stack.
-	return syserr.TranslateNetstackError(ep.SetSockOpt(struct{}{}))
+	return nil
 }
 
 var (
@@ -2223,7 +2227,7 @@ func setSockOptIP(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, name in
 			return err
 		}
 
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.AddMembershipOption{
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&tcpip.AddMembershipOption{
 			NIC: tcpip.NICID(req.InterfaceIndex),
 			// TODO(igudger): Change AddMembership to use the standard
 			// any address representation.
@@ -2237,7 +2241,7 @@ func setSockOptIP(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, name in
 			return err
 		}
 
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.RemoveMembershipOption{
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&tcpip.RemoveMembershipOption{
 			NIC: tcpip.NICID(req.InterfaceIndex),
 			// TODO(igudger): Change DropMembership to use the standard
 			// any address representation.
@@ -2251,7 +2255,7 @@ func setSockOptIP(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, name in
 			return err
 		}
 
-		return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.MulticastInterfaceOption{
+		return syserr.TranslateNetstackError(ep.SetSockOpt(&tcpip.MulticastInterfaceOption{
 			NIC:           tcpip.NICID(req.InterfaceIndex),
 			InterfaceAddr: bytesToIPAddress(req.InterfaceAddr[:]),
 		}))
@@ -2375,8 +2379,7 @@ func setSockOptIP(t *kernel.Task, s socket.SocketOps, ep commonEndpoint, name in
 		t.Kernel().EmitUnimplementedEvent(t)
 	}
 
-	// Default to the old behavior; hand off to network stack.
-	return syserr.TranslateNetstackError(ep.SetSockOpt(struct{}{}))
+	return nil
 }
 
 // emitUnimplementedEventTCP emits unimplemented event if name is valid. This
diff --git a/pkg/sentry/socket/unix/socket_refs.go b/pkg/sentry/socket/unix/socket_refs.go
index dababb85f..39aaedc7f 100644
--- a/pkg/sentry/socket/unix/socket_refs.go
+++ b/pkg/sentry/socket/unix/socket_refs.go
@@ -2,11 +2,10 @@ package unix
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/socket/unix/transport/queue_refs.go b/pkg/sentry/socket/unix/transport/queue_refs.go
index 0d4e34988..4c3dcd13f 100644
--- a/pkg/sentry/socket/unix/transport/queue_refs.go
+++ b/pkg/sentry/socket/unix/transport/queue_refs.go
@@ -2,11 +2,10 @@ package transport
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/socket/unix/transport/unix.go b/pkg/sentry/socket/unix/transport/unix.go
index 4bf06d4dc..cc9d650fb 100644
--- a/pkg/sentry/socket/unix/transport/unix.go
+++ b/pkg/sentry/socket/unix/transport/unix.go
@@ -172,9 +172,8 @@ type Endpoint interface {
 	// connected.
 	GetRemoteAddress() (tcpip.FullAddress, *tcpip.Error)
 
-	// SetSockOpt sets a socket option. opt should be one of the tcpip.*Option
-	// types.
-	SetSockOpt(opt interface{}) *tcpip.Error
+	// SetSockOpt sets a socket option.
+	SetSockOpt(opt tcpip.SettableSocketOption) *tcpip.Error
 
 	// SetSockOptBool sets a socket option for simple cases when a value has
 	// the int type.
@@ -184,9 +183,8 @@ type Endpoint interface {
 	// the int type.
 	SetSockOptInt(opt tcpip.SockOptInt, v int) *tcpip.Error
 
-	// GetSockOpt gets a socket option. opt should be a pointer to one of the
-	// tcpip.*Option types.
-	GetSockOpt(opt interface{}) *tcpip.Error
+	// GetSockOpt gets a socket option.
+	GetSockOpt(opt tcpip.GettableSocketOption) *tcpip.Error
 
 	// GetSockOptBool gets a socket option for simple cases when a return
 	// value has the int type.
@@ -841,7 +839,7 @@ func (e *baseEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMess
 }
 
 // SetSockOpt sets a socket option. Currently not supported.
-func (e *baseEndpoint) SetSockOpt(opt interface{}) *tcpip.Error {
+func (e *baseEndpoint) SetSockOpt(tcpip.SettableSocketOption) *tcpip.Error {
 	return nil
 }
 
@@ -943,7 +941,7 @@ func (e *baseEndpoint) GetSockOptInt(opt tcpip.SockOptInt) (int, *tcpip.Error) {
 }
 
 // GetSockOpt implements tcpip.Endpoint.GetSockOpt.
-func (e *baseEndpoint) GetSockOpt(opt interface{}) *tcpip.Error {
+func (e *baseEndpoint) GetSockOpt(opt tcpip.GettableSocketOption) *tcpip.Error {
 	switch opt.(type) {
 	case *tcpip.LingerOption:
 		return nil
diff --git a/pkg/sentry/vfs/file_description_refs.go b/pkg/sentry/vfs/file_description_refs.go
index bdd7e6554..6c7747259 100644
--- a/pkg/sentry/vfs/file_description_refs.go
+++ b/pkg/sentry/vfs/file_description_refs.go
@@ -2,11 +2,10 @@ package vfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/vfs/filesystem_refs.go b/pkg/sentry/vfs/filesystem_refs.go
index 38a9a986f..96f681831 100644
--- a/pkg/sentry/vfs/filesystem_refs.go
+++ b/pkg/sentry/vfs/filesystem_refs.go
@@ -2,11 +2,10 @@ package vfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so
diff --git a/pkg/sentry/vfs/mount_namespace_refs.go b/pkg/sentry/vfs/mount_namespace_refs.go
index 63285fb8e..4c422c81f 100644
--- a/pkg/sentry/vfs/mount_namespace_refs.go
+++ b/pkg/sentry/vfs/mount_namespace_refs.go
@@ -2,11 +2,10 @@ package vfs
 
 import (
 	"fmt"
-	"runtime"
-	"sync/atomic"
-
 	"gvisor.dev/gvisor/pkg/log"
 	refs_vfs1 "gvisor.dev/gvisor/pkg/refs"
+	"runtime"
+	"sync/atomic"
 )
 
 // ownerType is used to customize logging. Note that we use a pointer to T so