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Date: Sun, 30 Jul 2006 09:27:19 -0700
From: "Alex Eng" <skydaemon AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.21: file timestamp not updated after editing
In-Reply-To: <20060730134229.GD8152@calimero.vinschen.de>
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References: <89b7ca960607291929u28fd2020kcc0dc399dbf9d5e1 AT mail DOT gmail DOT com> 	 <20060730134229 DOT GD8152 AT calimero DOT vinschen DOT de>
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On 7/30/06, Corinna Vinschen <corinna-cygwin AT cygwin DOT com> wrote:
> On Jul 29 19:29, Alex Eng wrote:
> > After editing a file, the timestamp on the file (according to ls -l)
> > is unchanged.  However if stat <filename> is executed, the change
> > timestamp given in the output differs from that given in ls -l:
> >
> > $ ls -l foo.c
> > -rw-r--r-- 1 Alex 126 Jul 29 17:10 foo.c
> > $ nano foo.c
> > ### File is edited and saved ###
> > $ ls -l foo.c
> > -rw-r--r-- 1 Alex 289 Jul 29 17:10 foo.c
> > $ stat foo.c
> >  File: `foo.c'
> >  Size: 289             Blocks: 1          IO Block: 1024   regular file
> > Device: a8dc98beh/2833029310d   Inode: 562949953426654  Links: 1
> > Access: (0644/-rw-r--r--)  Uid: ( 1004/    Alex)   Gid: (  513/    None)
> > Access: 2006-07-29 18:19:09.921875000 -0700
> > Modify: 2006-07-29 17:10:44.531250000 -0700
> > Change: 2006-07-29 18:19:15.828125000 -0700
>
> I can't reproduce this problem at all.  Assuming nano changes the file
> in place, opposed to editors like vim, which recreate the file on write,
> then a simple open/write/close like this:
>
>   #include <stdio.h>
>   #include <errno.h>
>   #include <sys/fcntl.h>
>
>   int
>   main (int argc, char **argv)
>   {
>     int fd = open (argv[1], O_WRONLY);
>     if (fd < 0)
>       {
>         fprintf (stderr, "open(%s): %d <%s>\n",
>                  argv[1], errno, strerror (errno));
>         return 1;
>       }
>     --argc; ++argv;
>     while (--argc > 0)
>       {
>         ++argv;
>         write (fd, *argv, strlen (*argv));
>       }
>     close (fd);
>     return 0;
>   }
>
> would have the same effect.  It hasn't, at least not in my testing.
> Is there a chance that you're suffering from a malice virus scanner?
>
>
> Corinna
>
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Project Co-Leader          cygwin AT cygwin DOT com
> Red Hat
>
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>

I disabled Norton Antivirus 2005 and ZoneAlarm firewall, but the
problem is still present.

I did some further troubleshooting and found that this problem doesn't
occur anymore if I'm running Cygwin while Windows XP is in safe mode.
But it happens again if I start Windows using the "Safe Mode With
Networking" option.  I've been able to reproduce this consistently.

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