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-rw-r--r--pkg/sentry/socket/unix/io.go9
-rw-r--r--pkg/sentry/socket/unix/transport/connectioned.go24
-rw-r--r--pkg/sentry/socket/unix/transport/connectionless.go22
-rw-r--r--pkg/sentry/socket/unix/transport/unix.go15
-rw-r--r--pkg/sentry/socket/unix/unix.go14
5 files changed, 53 insertions, 31 deletions
diff --git a/pkg/sentry/socket/unix/io.go b/pkg/sentry/socket/unix/io.go
index 023c2f135..760c7beab 100644
--- a/pkg/sentry/socket/unix/io.go
+++ b/pkg/sentry/socket/unix/io.go
@@ -15,6 +15,7 @@
package unix
import (
+ "gvisor.dev/gvisor/pkg/sentry/context"
"gvisor.dev/gvisor/pkg/sentry/safemem"
"gvisor.dev/gvisor/pkg/sentry/socket/unix/transport"
"gvisor.dev/gvisor/pkg/tcpip"
@@ -24,6 +25,8 @@ import (
//
// EndpointWriter is not thread-safe.
type EndpointWriter struct {
+ Ctx context.Context
+
// Endpoint is the transport.Endpoint to write to.
Endpoint transport.Endpoint
@@ -37,7 +40,7 @@ type EndpointWriter struct {
// WriteFromBlocks implements safemem.Writer.WriteFromBlocks.
func (w *EndpointWriter) WriteFromBlocks(srcs safemem.BlockSeq) (uint64, error) {
return safemem.FromVecWriterFunc{func(bufs [][]byte) (int64, error) {
- n, err := w.Endpoint.SendMsg(bufs, w.Control, w.To)
+ n, err := w.Endpoint.SendMsg(w.Ctx, bufs, w.Control, w.To)
if err != nil {
return int64(n), err.ToError()
}
@@ -50,6 +53,8 @@ func (w *EndpointWriter) WriteFromBlocks(srcs safemem.BlockSeq) (uint64, error)
//
// EndpointReader is not thread-safe.
type EndpointReader struct {
+ Ctx context.Context
+
// Endpoint is the transport.Endpoint to read from.
Endpoint transport.Endpoint
@@ -81,7 +86,7 @@ type EndpointReader struct {
// ReadToBlocks implements safemem.Reader.ReadToBlocks.
func (r *EndpointReader) ReadToBlocks(dsts safemem.BlockSeq) (uint64, error) {
return safemem.FromVecReaderFunc{func(bufs [][]byte) (int64, error) {
- n, ms, c, ct, err := r.Endpoint.RecvMsg(bufs, r.Creds, r.NumRights, r.Peek, r.From)
+ n, ms, c, ct, err := r.Endpoint.RecvMsg(r.Ctx, bufs, r.Creds, r.NumRights, r.Peek, r.From)
r.Control = c
r.ControlTrunc = ct
r.MsgSize = ms
diff --git a/pkg/sentry/socket/unix/transport/connectioned.go b/pkg/sentry/socket/unix/transport/connectioned.go
index 9d07cde22..e4c416233 100644
--- a/pkg/sentry/socket/unix/transport/connectioned.go
+++ b/pkg/sentry/socket/unix/transport/connectioned.go
@@ -18,6 +18,7 @@ import (
"sync"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/context"
"gvisor.dev/gvisor/pkg/syserr"
"gvisor.dev/gvisor/pkg/tcpip"
"gvisor.dev/gvisor/pkg/waiter"
@@ -111,8 +112,13 @@ type connectionedEndpoint struct {
acceptedChan chan *connectionedEndpoint `state:".([]*connectionedEndpoint)"`
}
+var (
+ _ = BoundEndpoint((*connectionedEndpoint)(nil))
+ _ = Endpoint((*connectionedEndpoint)(nil))
+)
+
// NewConnectioned creates a new unbound connectionedEndpoint.
-func NewConnectioned(stype linux.SockType, uid UniqueIDProvider) Endpoint {
+func NewConnectioned(ctx context.Context, stype linux.SockType, uid UniqueIDProvider) Endpoint {
return &connectionedEndpoint{
baseEndpoint: baseEndpoint{Queue: &waiter.Queue{}},
id: uid.UniqueID(),
@@ -122,7 +128,7 @@ func NewConnectioned(stype linux.SockType, uid UniqueIDProvider) Endpoint {
}
// NewPair allocates a new pair of connected unix-domain connectionedEndpoints.
-func NewPair(stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
+func NewPair(ctx context.Context, stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
a := &connectionedEndpoint{
baseEndpoint: baseEndpoint{Queue: &waiter.Queue{}},
id: uid.UniqueID(),
@@ -163,7 +169,7 @@ func NewPair(stype linux.SockType, uid UniqueIDProvider) (Endpoint, Endpoint) {
// NewExternal creates a new externally backed Endpoint. It behaves like a
// socketpair.
-func NewExternal(stype linux.SockType, uid UniqueIDProvider, queue *waiter.Queue, receiver Receiver, connected ConnectedEndpoint) Endpoint {
+func NewExternal(ctx context.Context, stype linux.SockType, uid UniqueIDProvider, queue *waiter.Queue, receiver Receiver, connected ConnectedEndpoint) Endpoint {
return &connectionedEndpoint{
baseEndpoint: baseEndpoint{Queue: queue, receiver: receiver, connected: connected},
id: uid.UniqueID(),
@@ -238,7 +244,7 @@ func (e *connectionedEndpoint) Close() {
}
// BidirectionalConnect implements BoundEndpoint.BidirectionalConnect.
-func (e *connectionedEndpoint) BidirectionalConnect(ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
+func (e *connectionedEndpoint) BidirectionalConnect(ctx context.Context, ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
if ce.Type() != e.stype {
return syserr.ErrConnectionRefused
}
@@ -334,19 +340,19 @@ func (e *connectionedEndpoint) BidirectionalConnect(ce ConnectingEndpoint, retur
}
// UnidirectionalConnect implements BoundEndpoint.UnidirectionalConnect.
-func (e *connectionedEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error) {
+func (e *connectionedEndpoint) UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error) {
return nil, syserr.ErrConnectionRefused
}
// Connect attempts to directly connect to another Endpoint.
// Implements Endpoint.Connect.
-func (e *connectionedEndpoint) Connect(server BoundEndpoint) *syserr.Error {
+func (e *connectionedEndpoint) Connect(ctx context.Context, server BoundEndpoint) *syserr.Error {
returnConnect := func(r Receiver, ce ConnectedEndpoint) {
e.receiver = r
e.connected = ce
}
- return server.BidirectionalConnect(e, returnConnect)
+ return server.BidirectionalConnect(ctx, e, returnConnect)
}
// Listen starts listening on the connection.
@@ -426,13 +432,13 @@ func (e *connectionedEndpoint) Bind(addr tcpip.FullAddress, commit func() *syser
// SendMsg writes data and a control message to the endpoint's peer.
// This method does not block if the data cannot be written.
-func (e *connectionedEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *connectionedEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
// Stream sockets do not support specifying the endpoint. Seqpacket
// sockets ignore the passed endpoint.
if e.stype == linux.SOCK_STREAM && to != nil {
return 0, syserr.ErrNotSupported
}
- return e.baseEndpoint.SendMsg(data, c, to)
+ return e.baseEndpoint.SendMsg(ctx, data, c, to)
}
// Readiness returns the current readiness of the connectionedEndpoint. For
diff --git a/pkg/sentry/socket/unix/transport/connectionless.go b/pkg/sentry/socket/unix/transport/connectionless.go
index 254148286..cb2b60339 100644
--- a/pkg/sentry/socket/unix/transport/connectionless.go
+++ b/pkg/sentry/socket/unix/transport/connectionless.go
@@ -16,6 +16,7 @@ package transport
import (
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/context"
"gvisor.dev/gvisor/pkg/syserr"
"gvisor.dev/gvisor/pkg/tcpip"
"gvisor.dev/gvisor/pkg/waiter"
@@ -32,8 +33,13 @@ type connectionlessEndpoint struct {
baseEndpoint
}
+var (
+ _ = BoundEndpoint((*connectionlessEndpoint)(nil))
+ _ = Endpoint((*connectionlessEndpoint)(nil))
+)
+
// NewConnectionless creates a new unbound dgram endpoint.
-func NewConnectionless() Endpoint {
+func NewConnectionless(ctx context.Context) Endpoint {
ep := &connectionlessEndpoint{baseEndpoint{Queue: &waiter.Queue{}}}
ep.receiver = &queueReceiver{readQueue: &queue{ReaderQueue: ep.Queue, WriterQueue: &waiter.Queue{}, limit: initialLimit}}
return ep
@@ -72,12 +78,12 @@ func (e *connectionlessEndpoint) Close() {
}
// BidirectionalConnect implements BoundEndpoint.BidirectionalConnect.
-func (e *connectionlessEndpoint) BidirectionalConnect(ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
+func (e *connectionlessEndpoint) BidirectionalConnect(ctx context.Context, ce ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error {
return syserr.ErrConnectionRefused
}
// UnidirectionalConnect implements BoundEndpoint.UnidirectionalConnect.
-func (e *connectionlessEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error) {
+func (e *connectionlessEndpoint) UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error) {
e.Lock()
r := e.receiver
e.Unlock()
@@ -96,12 +102,12 @@ func (e *connectionlessEndpoint) UnidirectionalConnect() (ConnectedEndpoint, *sy
// SendMsg writes data and a control message to the specified endpoint.
// This method does not block if the data cannot be written.
-func (e *connectionlessEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *connectionlessEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
if to == nil {
- return e.baseEndpoint.SendMsg(data, c, nil)
+ return e.baseEndpoint.SendMsg(ctx, data, c, nil)
}
- connected, err := to.UnidirectionalConnect()
+ connected, err := to.UnidirectionalConnect(ctx)
if err != nil {
return 0, syserr.ErrInvalidEndpointState
}
@@ -124,8 +130,8 @@ func (e *connectionlessEndpoint) Type() linux.SockType {
}
// Connect attempts to connect directly to server.
-func (e *connectionlessEndpoint) Connect(server BoundEndpoint) *syserr.Error {
- connected, err := server.UnidirectionalConnect()
+func (e *connectionlessEndpoint) Connect(ctx context.Context, server BoundEndpoint) *syserr.Error {
+ connected, err := server.UnidirectionalConnect(ctx)
if err != nil {
return err
}
diff --git a/pkg/sentry/socket/unix/transport/unix.go b/pkg/sentry/socket/unix/transport/unix.go
index a4d41e355..b0765ba55 100644
--- a/pkg/sentry/socket/unix/transport/unix.go
+++ b/pkg/sentry/socket/unix/transport/unix.go
@@ -20,6 +20,7 @@ import (
"sync/atomic"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/sentry/context"
"gvisor.dev/gvisor/pkg/syserr"
"gvisor.dev/gvisor/pkg/tcpip"
"gvisor.dev/gvisor/pkg/tcpip/buffer"
@@ -120,13 +121,13 @@ type Endpoint interface {
// CMTruncated indicates that the numRights hint was used to receive fewer
// than the total available SCM_RIGHTS FDs. Additional truncation may be
// required by the caller.
- RecvMsg(data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (recvLen, msgLen uintptr, cm ControlMessages, CMTruncated bool, err *syserr.Error)
+ RecvMsg(ctx context.Context, data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (recvLen, msgLen uintptr, cm ControlMessages, CMTruncated bool, err *syserr.Error)
// SendMsg writes data and a control message to the endpoint's peer.
// This method does not block if the data cannot be written.
//
// SendMsg does not take ownership of any of its arguments on error.
- SendMsg([][]byte, ControlMessages, BoundEndpoint) (uintptr, *syserr.Error)
+ SendMsg(context.Context, [][]byte, ControlMessages, BoundEndpoint) (uintptr, *syserr.Error)
// Connect connects this endpoint directly to another.
//
@@ -134,7 +135,7 @@ type Endpoint interface {
// endpoint passed in as a parameter.
//
// The error codes are the same as Connect.
- Connect(server BoundEndpoint) *syserr.Error
+ Connect(ctx context.Context, server BoundEndpoint) *syserr.Error
// Shutdown closes the read and/or write end of the endpoint connection
// to its peer.
@@ -215,7 +216,7 @@ type BoundEndpoint interface {
//
// This method will return syserr.ErrConnectionRefused on endpoints with a
// type that isn't SockStream or SockSeqpacket.
- BidirectionalConnect(ep ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error
+ BidirectionalConnect(ctx context.Context, ep ConnectingEndpoint, returnConnect func(Receiver, ConnectedEndpoint)) *syserr.Error
// UnidirectionalConnect establishes a write-only connection to a unix
// endpoint.
@@ -225,7 +226,7 @@ type BoundEndpoint interface {
//
// This method will return syserr.ErrConnectionRefused on a non-SockDgram
// endpoint.
- UnidirectionalConnect() (ConnectedEndpoint, *syserr.Error)
+ UnidirectionalConnect(ctx context.Context) (ConnectedEndpoint, *syserr.Error)
// Passcred returns whether or not the SO_PASSCRED socket option is
// enabled on this end.
@@ -776,7 +777,7 @@ func (e *baseEndpoint) Connected() bool {
}
// RecvMsg reads data and a control message from the endpoint.
-func (e *baseEndpoint) RecvMsg(data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (uintptr, uintptr, ControlMessages, bool, *syserr.Error) {
+func (e *baseEndpoint) RecvMsg(ctx context.Context, data [][]byte, creds bool, numRights uintptr, peek bool, addr *tcpip.FullAddress) (uintptr, uintptr, ControlMessages, bool, *syserr.Error) {
e.Lock()
if e.receiver == nil {
@@ -802,7 +803,7 @@ func (e *baseEndpoint) RecvMsg(data [][]byte, creds bool, numRights uintptr, pee
// SendMsg writes data and a control message to the endpoint's peer.
// This method does not block if the data cannot be written.
-func (e *baseEndpoint) SendMsg(data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
+func (e *baseEndpoint) SendMsg(ctx context.Context, data [][]byte, c ControlMessages, to BoundEndpoint) (uintptr, *syserr.Error) {
e.Lock()
if !e.Connected() {
e.Unlock()
diff --git a/pkg/sentry/socket/unix/unix.go b/pkg/sentry/socket/unix/unix.go
index 58483a279..97db87f3e 100644
--- a/pkg/sentry/socket/unix/unix.go
+++ b/pkg/sentry/socket/unix/unix.go
@@ -363,7 +363,7 @@ func (s *SocketOperations) Connect(t *kernel.Task, sockaddr []byte, blocking boo
defer ep.Release()
// Connect the server endpoint.
- return s.ep.Connect(ep)
+ return s.ep.Connect(t, ep)
}
// Writev implements fs.FileOperations.Write.
@@ -372,11 +372,12 @@ func (s *SocketOperations) Write(ctx context.Context, _ *fs.File, src usermem.IO
ctrl := control.New(t, s.ep, nil)
if src.NumBytes() == 0 {
- nInt, err := s.ep.SendMsg([][]byte{}, ctrl, nil)
+ nInt, err := s.ep.SendMsg(ctx, [][]byte{}, ctrl, nil)
return int64(nInt), err.ToError()
}
return src.CopyInTo(ctx, &EndpointWriter{
+ Ctx: ctx,
Endpoint: s.ep,
Control: ctrl,
To: nil,
@@ -387,6 +388,7 @@ func (s *SocketOperations) Write(ctx context.Context, _ *fs.File, src usermem.IO
// a transport.Endpoint.
func (s *SocketOperations) SendMsg(t *kernel.Task, src usermem.IOSequence, to []byte, flags int, haveDeadline bool, deadline ktime.Time, controlMessages socket.ControlMessages) (int, *syserr.Error) {
w := EndpointWriter{
+ Ctx: t,
Endpoint: s.ep,
Control: controlMessages.Unix,
To: nil,
@@ -486,6 +488,7 @@ func (s *SocketOperations) Read(ctx context.Context, _ *fs.File, dst usermem.IOS
return 0, nil
}
return dst.CopyOutFrom(ctx, &EndpointReader{
+ Ctx: ctx,
Endpoint: s.ep,
NumRights: 0,
Peek: false,
@@ -522,6 +525,7 @@ func (s *SocketOperations) RecvMsg(t *kernel.Task, dst usermem.IOSequence, flags
}
r := EndpointReader{
+ Ctx: t,
Endpoint: s.ep,
Creds: wantCreds,
NumRights: uintptr(numRights),
@@ -635,9 +639,9 @@ func (*provider) Socket(t *kernel.Task, stype linux.SockType, protocol int) (*fs
var ep transport.Endpoint
switch stype {
case linux.SOCK_DGRAM:
- ep = transport.NewConnectionless()
+ ep = transport.NewConnectionless(t)
case linux.SOCK_SEQPACKET, linux.SOCK_STREAM:
- ep = transport.NewConnectioned(stype, t.Kernel())
+ ep = transport.NewConnectioned(t, stype, t.Kernel())
default:
return nil, syserr.ErrInvalidArgument
}
@@ -660,7 +664,7 @@ func (*provider) Pair(t *kernel.Task, stype linux.SockType, protocol int) (*fs.F
}
// Create the endpoints and sockets.
- ep1, ep2 := transport.NewPair(stype, t.Kernel())
+ ep1, ep2 := transport.NewPair(t, stype, t.Kernel())
s1 := New(t, ep1, stype)
s2 := New(t, ep2, stype)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 06:58:44 +0000