Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Message-ID: <026301c30428$d601f000$13001aac@laloch> From: "David Strobach" To: References: <018701c3041c$07096f00$13001aac AT laloch> <20030416134815 DOT GN11137 AT cygbert DOT vinschen DOT de> Subject: Re: inetutils ping not present but portable Date: Wed, 16 Apr 2003 16:59:52 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Corinna Vinschen wrote in <20030416134815 DOT GN11137 AT cygbert DOT vinschen DOT de> in gmane.os.cygwin on Wed, 16 Apr 2003 15:48:15 +0200: > On Wed, Apr 16, 2003 at 03:28:10PM +0200, David Strobach wrote: > > Is there any special reason for ping not to be present in inteutils port? I > > have successfully compiled ping from inetutils-1.4.2 with no changes to > > source code. > > ping isn't present in 1.3.2. Also ping is included by default in all > Windows systems. Well, /a/ ping is included, although it's a pretty poor version compared to most. (Very granular timing, lack of broadcast option, etc., etc.) A port of a POSIX-style source should be pretty straightforward but a problem is that it opens raw sockets to generate/receive the ICMP datagrams and so needs to be suid-root for normal user accounts to be able to use it. On NT/2k/XP Cygwin's suid doesn't (yet? cygserver?) work for normal user accounts so a ported ping command would only work from an Administrative one. Microsoft's ping.exe gets around this by using the system icmp.dll that provides a limited ICMP datagram send/receive facility without needing enhanced privileges. I've been thinking about writing a better ping.exe using this for a while now, but have never gotten around to it. -- Sam Edge -- Thank you very much for suggestion. David -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/