Merge pull request #6 from lomik/master

Revert to reduce privileges via StartProcess

Setuid working bad in golang. Discussion: https://code.google.com/p/go/issues/detail?id=1435

daemon_posix.go

@@ -109,6 +109,8 @@ func (d *Context) parent() (child *os.Process, err error) {
 		Env:   d.Env,
 		Files: d.files(),
 		Sys: &syscall.SysProcAttr{
+			//Chroot:     d.Chroot,
+			Credential: d.Credential,
 			Setsid:     true,
 		},
 	}
@@ -247,18 +249,6 @@ func (d *Context) child() (err error) {
 	if len(d.Chroot) > 0 {
 		err = syscall.Chroot(d.Chroot)
 	}
-	if d.Credential != nil {
-		if d.Credential.Gid > 0 {
-			if err = syscall.Setgid(int(d.Credential.Gid)); err != nil {
-				return
-			}
-		}
-		if d.Credential.Uid > 0 {
-			if err = syscall.Setuid(int(d.Credential.Uid)); err != nil {
-				return
-			}
-		}
-	}
 
 	return
 }