Gather all syscall use in the osutil helper

Makes it easier to add windows portability

Signed-off-by: Anders F Björklund <[email protected]>

cmd/limactl/stop.go

@@ -7,11 +7,11 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
-	"syscall"
 	"time"
 
 	hostagentevents "github.com/lima-vm/lima/pkg/hostagent/events"
 	networks "github.com/lima-vm/lima/pkg/networks/reconcile"
+	"github.com/lima-vm/lima/pkg/osutil"
 	"github.com/lima-vm/lima/pkg/store"
 	"github.com/lima-vm/lima/pkg/store/filenames"
 	"github.com/sirupsen/logrus"
@@ -65,7 +65,7 @@ func stopInstanceGracefully(inst *store.Instance) error {
 
 	begin := time.Now() // used for logrus propagation
 	logrus.Infof("Sending SIGINT to hostagent process %d", inst.HostAgentPID)
-	if err := syscall.Kill(inst.HostAgentPID, syscall.SIGINT); err != nil {
+	if err := osutil.SysKill(inst.HostAgentPID, osutil.SigInt); err != nil {
 		logrus.Error(err)
 	}
 
@@ -106,7 +106,7 @@ func waitForHostAgentTermination(ctx context.Context, inst *store.Instance, begi
 func stopInstanceForcibly(inst *store.Instance) {
 	if inst.QemuPID > 0 {
 		logrus.Infof("Sending SIGKILL to the QEMU process %d", inst.QemuPID)
-		if err := syscall.Kill(inst.QemuPID, syscall.SIGKILL); err != nil {
+		if err := osutil.SysKill(inst.QemuPID, osutil.SigKill); err != nil {
 			logrus.Error(err)
 		}
 	} else {
@@ -115,7 +115,7 @@ func stopInstanceForcibly(inst *store.Instance) {
 
 	if inst.HostAgentPID > 0 {
 		logrus.Infof("Sending SIGKILL to the host agent process %d", inst.HostAgentPID)
-		if err := syscall.Kill(inst.HostAgentPID, syscall.SIGKILL); err != nil {
+		if err := osutil.SysKill(inst.HostAgentPID, osutil.SigKill); err != nil {
 			logrus.Error(err)
 		}
 	} else {

pkg/networks/reconcile/reconcile.go

@@ -9,7 +9,6 @@ import (
 	"runtime"
 	"strings"
 	"sync"
-	"syscall"
 	"time"
 
 	"github.com/lima-vm/lima/pkg/networks"
@@ -94,7 +93,7 @@ func makeVarRun(config *networks.NetworksConfig) error {
 	if err != nil {
 		return err
 	}
-	stat, ok := fi.Sys().(*syscall.Stat_t)
+	stat, ok := osutil.SysStat(fi)
 	if !ok {
 		// should never happen
 		return fmt.Errorf("could not retrieve stat buffer for %q", config.Paths.VarRun)

pkg/networks/validate.go

@@ -8,7 +8,6 @@ import (
 	"path/filepath"
 	"reflect"
 	"strings"
-	"syscall"
 
 	"github.com/lima-vm/lima/pkg/osutil"
 )
@@ -73,7 +72,7 @@ func validatePath(path string, allowDaemonGroupWritable bool) error {
 	if (fi.Mode() & fs.ModeSymlink) != 0 {
 		return fmt.Errorf("%s %q is a symlink", file, path)
 	}
-	stat, ok := fi.Sys().(*syscall.Stat_t)
+	stat, ok := osutil.SysStat(fi)
 	if !ok {
 		// should never happen
 		return fmt.Errorf("could not retrieve stat buffer for %q", path)

pkg/osutil/osutil_linux.go

@@ -1,4 +1,32 @@
 package osutil
 
+import (
+	"io/fs"
+	"syscall"
+)
+
 // UnixPathMax is the value of UNIX_PATH_MAX.
 const UnixPathMax = 108
+
+// Stat is a selection of syscall.Stat_t
+type Stat struct {
+	Uid uint32
+	Gid uint32
+}
+
+func SysStat(fi fs.FileInfo) (Stat, bool) {
+	stat, ok := fi.Sys().(*syscall.Stat_t)
+	return Stat{Uid: stat.Uid, Gid: stat.Gid}, ok
+}
+
+// SigInt is the value of SIGINT.
+const SigInt = Signal(syscall.SIGINT)
+
+// SigKill is the value of SIGKILL.
+const SigKill = Signal(syscall.SIGKILL)
+
+type Signal syscall.Signal
+
+func SysKill(pid int, sig Signal) error {
+	return syscall.Kill(pid, syscall.Signal(sig))
+}

pkg/osutil/osutil_others.go

@@ -1,7 +1,35 @@
-//go:build !linux
-// +build !linux
+//go:build !linux && !windows
+// +build !linux,!windows
 
 package osutil
 
+import (
+	"io/fs"
+	"syscall"
+)
+
 // UnixPathMax is the value of UNIX_PATH_MAX.
 const UnixPathMax = 104
+
+// Stat is a selection of syscall.Stat_t
+type Stat struct {
+	Uid uint32
+	Gid uint32
+}
+
+func SysStat(fi fs.FileInfo) (Stat, bool) {
+	stat, ok := fi.Sys().(*syscall.Stat_t)
+	return Stat{Uid: stat.Uid, Gid: stat.Gid}, ok
+}
+
+// SigInt is the value of SIGINT.
+const SigInt = Signal(syscall.SIGINT)
+
+// SigKill is the value of SIGKILL.
+const SigKill = Signal(syscall.SIGKILL)
+
+type Signal syscall.Signal
+
+func SysKill(pid int, sig Signal) error {
+	return syscall.Kill(pid, syscall.Signal(sig))
+}

pkg/osutil/osutil_windows.go

@@ -0,0 +1,31 @@
+package osutil
+
+import (
+	"fmt"
+	"io/fs"
+)
+
+// UnixPathMax is the value of UNIX_PATH_MAX.
+const UnixPathMax = 108
+
+// Stat is a selection of syscall.Stat_t
+type Stat struct {
+	Uid uint32
+	Gid uint32
+}
+
+func SysStat(fi fs.FileInfo) (Stat, bool) {
+	return Stat{Uid: 0, Gid: 0}, false
+}
+
+// SigInt is the value of SIGINT.
+const SigInt = Signal(2)
+
+// SigKill is the value of SIGKILL.
+const SigKill = Signal(9)
+
+type Signal int
+
+func SysKill(pid int, sig Signal) error {
+	return fmt.Errorf("unimplemented")
+}