1 files changed, 45 insertions, 0 deletions
diff --git a/client/go/util/execvp.go b/client/go/util/execvp.go
new file mode 100644
index 00000000000..2b47af4de1b
--- /dev/null
+++ b/client/go/util/execvp.go
@@ -0,0 +1,45 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+// Author: arnej
+
+//go:build !windows
+
+package util
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/vespa-engine/vespa/client/go/trace"
+	"golang.org/x/sys/unix"
+)
+
+func findInPath(prog string) string {
+	if strings.Contains(prog, "/") {
+		return prog
+	}
+	path := strings.Split(os.Getenv("PATH"), ":")
+	for _, dir := range path {
+		fn := dir + "/" + prog
+		if IsExecutableFile(fn) {
+			return fn
+		}
+	}
+	return prog
+}
+
+func Execvp(prog string, argv []string) error {
+	return Execvpe(prog, argv, os.Environ())
+}
+
+func Execvpe(prog string, argv []string, envv []string) error {
+	prog = findInPath(prog)
+	argv[0] = prog
+	return Execve(prog, argv, envv)
+}
+
+func Execve(prog string, argv []string, envv []string) error {
+	trace.Trace("run cmd:", strings.Join(argv, " "))
+	err := unix.Exec(prog, argv, envv)
+	return fmt.Errorf("cannot execute '%s': %v", prog, err)
+}