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// 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/internal/admin/envvars"
"github.com/vespa-engine/vespa/client/go/internal/admin/trace"
"golang.org/x/sys/unix"
)
func findInPath(prog string) string {
if strings.Contains(prog, "/") {
return prog
}
path := strings.Split(os.Getenv(envvars.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)
}
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