sys/targets: add OS/Arch name consts

We use strings to identify OS/Arch.
These strings are duplicated throughout the code base massively.
golangci-lint points to possiblity of typos and duplication.
We already had to define these names in pkg/csource
and disable checking for prog package. A future change triggers
such warnings in another package.

Add OS/Arch name consts to sys/targets so that they can be used
to refer to OS/Arch. Use the consts everywhere.

4 files changed, 12 insertions, 9 deletions

diff --git a/vm/gce/gce.go b/vm/gce/gce.go
index 7bc049cb2..e3f23ccee 100644
--- a/vm/gce/gce.go
+++ b/vm/gce/gce.go
@@ -28,6 +28,7 @@ import (
 	"github.com/google/syzkaller/pkg/kd"
 	"github.com/google/syzkaller/pkg/log"
 	"github.com/google/syzkaller/pkg/osutil"
+	"github.com/google/syzkaller/sys/targets"
 	"github.com/google/syzkaller/vm/vmimpl"
 )
 
@@ -248,7 +249,7 @@ func (inst *instance) Run(timeout time.Duration, stop <-chan bool, command strin
 	}
 	merger := vmimpl.NewOutputMerger(tee)
 	var decoder func(data []byte) (int, int, []byte)
-	if inst.env.OS == "windows" {
+	if inst.env.OS == targets.Windows {
 		decoder = kd.Decode
 	}
 	merger.AddDecoder("console", conRpipe, decoder)
@@ -264,7 +265,7 @@ func (inst *instance) Run(timeout time.Duration, stop <-chan bool, command strin
 		sshRpipe.Close()
 		return nil, nil, err
 	}
-	if inst.env.OS == "linux" {
+	if inst.env.OS == targets.Linux {
 		if inst.sshUser != "root" {
 			command = fmt.Sprintf("sudo bash -c '%v'", command)
 		}
@@ -369,10 +370,10 @@ func waitForConsoleConnect(merger *vmimpl.OutputMerger) error {
 }
 
 func (inst *instance) Diagnose() ([]byte, bool) {
-	if inst.env.OS == "freebsd" {
+	if inst.env.OS == targets.FreeBSD {
 		return vmimpl.DiagnoseFreeBSD(inst.consolew)
 	}
-	if inst.env.OS == "openbsd" {
+	if inst.env.OS == targets.OpenBSD {
 		return vmimpl.DiagnoseOpenBSD(inst.consolew)
 	}
 	return nil, false
diff --git a/vm/qemu/qemu.go b/vm/qemu/qemu.go
index 222dc4d8a..15b8e0854 100644
--- a/vm/qemu/qemu.go
+++ b/vm/qemu/qemu.go
@@ -259,7 +259,7 @@ func ctor(env *vmimpl.Env) (vmimpl.Pool, error) {
 		return nil, err
 	}
 	if env.Image == "9p" {
-		if env.OS != "linux" {
+		if env.OS != targets.Linux {
 			return nil, fmt.Errorf("9p image is supported for linux only")
 		}
 		if cfg.Kernel == "" {
diff --git a/vm/vm_test.go b/vm/vm_test.go
index 8c1f82917..31dd65045 100644
--- a/vm/vm_test.go
+++ b/vm/vm_test.go
@@ -13,6 +13,7 @@ import (
 
 	"github.com/google/syzkaller/pkg/mgrconfig"
 	"github.com/google/syzkaller/pkg/report"
+	"github.com/google/syzkaller/sys/targets"
 	"github.com/google/syzkaller/vm/vmimpl"
 )
 
@@ -340,9 +341,9 @@ func testMonitorExecution(t *testing.T, test *Test) {
 	defer os.RemoveAll(dir)
 	cfg := &mgrconfig.Config{
 		Workdir:      dir,
-		TargetOS:     "linux",
-		TargetArch:   "amd64",
-		TargetVMArch: "amd64",
+		TargetOS:     targets.Linux,
+		TargetArch:   targets.AMD64,
+		TargetVMArch: targets.AMD64,
 		Type:         "test",
 	}
 	pool, err := Create(cfg, false)
diff --git a/vm/vmimpl/util.go b/vm/vmimpl/util.go
index 418ae2d66..47340ccde 100644
--- a/vm/vmimpl/util.go
+++ b/vm/vmimpl/util.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/google/syzkaller/pkg/log"
 	"github.com/google/syzkaller/pkg/osutil"
+	"github.com/google/syzkaller/sys/targets"
 )
 
 // Sleep for d.
@@ -24,7 +25,7 @@ func SleepInterruptible(d time.Duration) bool {
 
 func WaitForSSH(debug bool, timeout time.Duration, addr, sshKey, sshUser, OS string, port int, stop chan error) error {
 	pwd := "pwd"
-	if OS == "windows" {
+	if OS == targets.Windows {
 		pwd = "dir"
 	}
 	startTime := time.Now()