From e1dc1c78e7a523fc64ca28bed60a9a40ea1de46a Mon Sep 17 00:00:00 2001
From: Zach Koopmans <zkoopmans@google.com>
Date: Tue, 22 Jun 2021 15:50:41 -0700
Subject: [syserror] Add conversions to linuxerr with temporary Equals method.

Add Equals method to compare syserror and unix.Errno errors to linuxerr errors.
This will facilitate removal of syserror definitions in a followup, and
finding needed conversions from unix.Errno to linuxerr.

PiperOrigin-RevId: 380909667
---
 pkg/sentry/socket/unix/BUILD        | 1 +
 pkg/sentry/socket/unix/unix.go      | 5 +++--
 pkg/sentry/socket/unix/unix_vfs2.go | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

(limited to 'pkg/sentry/socket/unix')

diff --git a/pkg/sentry/socket/unix/BUILD b/pkg/sentry/socket/unix/BUILD
index c9cbefb3a..5c3cdef6a 100644
--- a/pkg/sentry/socket/unix/BUILD
+++ b/pkg/sentry/socket/unix/BUILD
@@ -39,6 +39,7 @@ go_library(
     deps = [
         "//pkg/abi/linux",
         "//pkg/context",
+        "//pkg/errors/linuxerr",
         "//pkg/fspath",
         "//pkg/hostarch",
         "//pkg/log",
diff --git a/pkg/sentry/socket/unix/unix.go b/pkg/sentry/socket/unix/unix.go
index db7b1affe..8ccdadae9 100644
--- a/pkg/sentry/socket/unix/unix.go
+++ b/pkg/sentry/socket/unix/unix.go
@@ -23,6 +23,7 @@ import (
 	"golang.org/x/sys/unix"
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/fspath"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/marshal"
@@ -518,7 +519,7 @@ func (s *socketOpsCommon) SendMsg(t *kernel.Task, src usermem.IOSequence, to []b
 		}
 
 		if err = t.BlockWithDeadline(ch, haveDeadline, deadline); err != nil {
-			if err == syserror.ETIMEDOUT {
+			if linuxerr.Equals(linuxerr.ETIMEDOUT, err) {
 				err = syserror.ErrWouldBlock
 			}
 			break
@@ -719,7 +720,7 @@ func (s *socketOpsCommon) RecvMsg(t *kernel.Task, dst usermem.IOSequence, flags
 			if total > 0 {
 				err = nil
 			}
-			if err == syserror.ETIMEDOUT {
+			if linuxerr.Equals(linuxerr.ETIMEDOUT, err) {
 				return int(total), msgFlags, nil, 0, socket.ControlMessages{}, syserr.ErrTryAgain
 			}
 			return int(total), msgFlags, nil, 0, socket.ControlMessages{}, syserr.FromError(err)
diff --git a/pkg/sentry/socket/unix/unix_vfs2.go b/pkg/sentry/socket/unix/unix_vfs2.go
index c39e317ff..08a00a12f 100644
--- a/pkg/sentry/socket/unix/unix_vfs2.go
+++ b/pkg/sentry/socket/unix/unix_vfs2.go
@@ -17,6 +17,7 @@ package unix
 import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/fspath"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/marshal"
@@ -236,7 +237,7 @@ func (s *SocketVFS2) Bind(t *kernel.Task, sockaddr []byte) *syserr.Error {
 				Mode:     linux.FileMode(linux.S_IFSOCK | uint(stat.Mode)&^t.FSContext().Umask()),
 				Endpoint: bep,
 			})
-			if err == syserror.EEXIST {
+			if linuxerr.Equals(linuxerr.EEXIST, err) {
 				return syserr.ErrAddressInUse
 			}
 			return syserr.FromError(err)
-- 
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