cmd: add wasip1 support

For #58141

Co-authored-by: Richard Musiol <neelance@gmail.com>
Co-authored-by: Achille Roussel <achille.roussel@gmail.com>
Co-authored-by: Julien Fabre <ju.pryz@gmail.com>
Co-authored-by: Evan Phoenix <evan@phx.io>
Change-Id: I530ea78a3cd142f3a745f650b21c30e7f10ce981
Reviewed-on: https://go-review.googlesource.com/c/go/+/479621
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>

src/cmd/compile/internal/types2/example_test.go

@@ -5,7 +5,7 @@
 // Only run where builders (build.golang.org) have
 // access to compiled packages for import.
 //
-//go:build !android && !ios && !js
+//go:build !android && !ios && !js && !wasip1
 
 package types2_test
 

src/cmd/dist/test.go

@@ -675,7 +675,7 @@ func (t *tester) registerTests() {
 	}
 
 	// Runtime CPU tests.
-	if !t.compileOnly && goos != "js" { // js can't handle -cpu != 1
+	if !t.compileOnly && t.hasParallelism() {
 		t.registerTest("runtime:cpu124", "GOMAXPROCS=2 runtime -cpu=1,2,4 -quick",
 			&goTest{
 				timeout:   300 * time.Second,
@@ -737,9 +737,9 @@ func (t *tester) registerTests() {
 	// On the builders only, test that a moved GOROOT still works.
 	// Fails on iOS because CC_FOR_TARGET refers to clangwrap.sh
 	// in the unmoved GOROOT.
-	// Fails on Android and js/wasm with an exec format error.
+	// Fails on Android, js/wasm and wasip1/wasm with an exec format error.
 	// Fails on plan9 with "cannot find GOROOT" (issue #21016).
-	if os.Getenv("GO_BUILDER_NAME") != "" && goos != "android" && !t.iOS() && goos != "plan9" && goos != "js" {
+	if os.Getenv("GO_BUILDER_NAME") != "" && goos != "android" && !t.iOS() && goos != "plan9" && goos != "js" && goos != "wasip1" {
 		t.tests = append(t.tests, distTest{
 			name:    "moved_goroot",
 			heading: "moved GOROOT",
@@ -835,7 +835,7 @@ func (t *tester) registerTests() {
 	}
 
 	// sync tests
-	if goos != "js" { // js doesn't support -cpu=10
+	if t.hasParallelism() {
 		t.registerTest("sync_cpu", "sync -cpu=10",
 			&goTest{
 				timeout: 120 * time.Second,
@@ -1476,6 +1476,14 @@ func (t *tester) hasSwig() bool {
 	return true
 }
 
+func (t *tester) hasParallelism() bool {
+	switch goos {
+	case "js", "wasip1":
+		return false
+	}
+	return true
+}
+
 func (t *tester) raceDetectorSupported() bool {
 	if gohostos != goos {
 		return false

src/cmd/go/internal/base/signal_unix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build unix || js
+//go:build unix || js || wasip1
 
 package base
 

src/cmd/go/internal/cache/cache_test.go

@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
-	"internal/testenv"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -152,8 +151,8 @@ func dummyID(x int) [HashSize]byte {
 }
 
 func TestCacheTrim(t *testing.T) {
-	if runtime.GOOS == "js" {
-		testenv.SkipFlaky(t, 35220)
+	if runtime.GOOS == "js" || runtime.GOOS == "wasip1" {
+		t.Skip("file lock is unsupported on +" + runtime.GOOS)
 	}
 
 	dir, err := os.MkdirTemp("", "cachetest-")

src/cmd/go/internal/lockedfile/internal/filelock/filelock_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !js && !plan9
+//go:build !js && !plan9 && !wasip1
 
 package filelock_test
 

src/cmd/go/internal/lockedfile/lockedfile_test.go

@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// js does not support inter-process file locking.
+// js and wasip1 do not support inter-process file locking.
 //
-//go:build !js
+//go:build !js && !wasip1
 
 package lockedfile_test
 

src/cmd/go/internal/lockedfile/transform_test.go

@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// js does not support inter-process file locking.
+// js and wasip1 do not support inter-process file locking.
 //
-//go:build !js
+//go:build !js && !wasip1
 
 package lockedfile_test
 

src/cmd/go/internal/mmap/mmap_other.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (js && wasm) || plan9
+//go:build (js && wasm) || wasip1 || plan9
 
 package mmap
 

src/cmd/go/internal/work/build_test.go

@@ -6,6 +6,7 @@ package work
 
 import (
 	"fmt"
+	"internal/testenv"
 	"io/fs"
 	"os"
 	"path/filepath"
@@ -221,13 +222,6 @@ func pkgImportPath(pkgpath string) *load.Package {
 // directory.
 // See https://golang.org/issue/18878.
 func TestRespectSetgidDir(t *testing.T) {
-	switch runtime.GOOS {
-	case "ios":
-		t.Skip("can't set SetGID bit with chmod on iOS")
-	case "windows", "plan9":
-		t.Skip("chown/chmod setgid are not supported on Windows or Plan 9")
-	}
-
 	var b Builder
 
 	// Check that `cp` is called instead of `mv` by looking at the output
@@ -250,13 +244,24 @@ func TestRespectSetgidDir(t *testing.T) {
 	// the new temporary directory.
 	err = os.Chown(setgiddir, os.Getuid(), os.Getgid())
 	if err != nil {
+		if testenv.SyscallIsNotSupported(err) {
+			t.Skip("skipping: chown is not supported on " + runtime.GOOS)
+		}
 		t.Fatal(err)
 	}
 
 	// Change setgiddir's permissions to include the SetGID bit.
 	if err := os.Chmod(setgiddir, 0755|fs.ModeSetgid); err != nil {
+		if testenv.SyscallIsNotSupported(err) {
+			t.Skip("skipping: chmod is not supported on " + runtime.GOOS)
+		}
 		t.Fatal(err)
 	}
+	if fi, err := os.Stat(setgiddir); err != nil {
+		t.Fatal(err)
+	} else if fi.Mode()&fs.ModeSetgid == 0 {
+		t.Skip("skipping: Chmod ignored ModeSetgid on " + runtime.GOOS)
+	}
 
 	pkgfile, err := os.CreateTemp("", "pkgfile")
 	if err != nil {

src/cmd/internal/osinfo/os_wasip1.go

@@ -0,0 +1,17 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build wasip1
+
+package osinfo
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Version returns the OS version name/number.
+func Version() (string, error) {
+	return "", fmt.Errorf("unable to determine OS version: %w", errors.ErrUnsupported)
+}

src/cmd/test2json/signal_unix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build unix || js
+//go:build unix || js || wasip1
 
 package main