problem with the link command : ln

problem with the link command : ln

[DEMOTTIE Christophe DvSI/SIReS/GRE]

Hie, I'm french, so excuse me if my english is not perfect.

I've been using cygwin/Xfree since the 4.1 version of Xfree on Windows NT4 SP5,
and I enjoy its product. I try the new version which package cygwin and
Xfree 4.2.0.1 in the same setup. And I have a problem with "ln" command.

The symbolic link is ok, but not the physical link. In the old version,
I hadn't the problem. I don't know how cygwin simulate physical link,
but it's not the problem.

Here is an example of my test :

$ cd /bin
$ ls -l df*
-rwxr-xr-x    1 Admin    Aucun       39936 Jun 15  2001 df.exe

I'm trying to link the "df" command :

$ ln df.exe df1.exe
Segmentation fault (core dumped)

$ cat ln.exe.sta*
Exception: STATUS_ACCESS_VIOLATION at eip=77F348B5
eax=00000000 ebx=02423328 ecx=FFFFFFFF edx=FFFFFFFF esi=0000000C edi=0000000C
ebp=0241F440 esp=0241F414 program=d:\cygwin\bin\ln.exe
cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0241F440  77F348B5  (00000000, 00000000, 0000000C, FFFFFFFF)
0241FD60  6107120A  (61683890, 616838B8, 0241FE20, 00401D49)
0241FE20  00401EE3  (61683890, 616838B8, 0241FEB0, 00402BB8)
0241FEB0  004032C3  (00000003, 61682738, 0A010278, 0241FEE4)
0241FF00  61005A9E  (610C095C, FFFFFFFE, 000000A0, 610C08A0)
0241FF60  61005D28  (00000000, 00000000, 807FD0F3, 80F92BCC)
0241FF90  0040EB3B  (00402BA4, 0000000A, 00000246, 8011748B)
0241FFC0  0040103D  (0022E430, 0022E3C2, 7FFDF000, 7FFDF000)
0241FFF0  77F1BA06  (00401000, 00000000, 000000B0, 00000100)
End of stack trace

$ ln -s df.exe df1.exe

$ ls -l df*
-rwxr-xr-x    1 Admin    Aucun       39936 Jun 15  2001 df.exe
lrwxrwxrwx    1 Admin    Aucun          92 Jul  5 10:55 df1.exe -> df.exe

The symbolic link is ok, but not the physical link. In the old version,
I hadn't the problem.

Christophe.


Have a good day.

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Re: problem with the link command : ln

[Corinna Vinschen]

On Tue, Jul 09, 2002 at 08:58:09AM +0200, DEMOTTIE Christophe DvSI/SIReS/GRE wrote:
> Hie, I'm french, so excuse me if my english is not perfect.
> 
> I've been using cygwin/Xfree since the 4.1 version of Xfree on Windows NT4 SP5,
> and I enjoy its product. I try the new version which package cygwin and
> Xfree 4.2.0.1 in the same setup. And I have a problem with "ln" command.
> 
> The symbolic link is ok, but not the physical link. In the old version,
> I hadn't the problem. I don't know how cygwin simulate physical link,
> but it's not the problem.

I tried it on XP and NT4SP6 and I had no problems creating a hard link,
neither on NTFS, nor on FAT, testing on both platforms with cygwin 1.3.12-2.

Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.

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Re: problem with the link command : ln

[Dario Alcocer]

On Tue, Jul 09, 2002 at 08:58:09AM +0200, DEMOTTIE Christophe DvSI/SIReS/GRE wrote:
> The symbolic link is ok, but not the physical link. In the old version,
> I hadn't the problem. I don't know how cygwin simulate physical link,
> but it's not the problem.
> 
> Here is an example of my test :
> 
> $ cd /bin
> $ ls -l df*
> -rwxr-xr-x    1 Admin    Aucun       39936 Jun 15  2001 df.exe
> 
> I'm trying to link the "df" command :
> 
> $ ln df.exe df1.exe
> Segmentation fault (core dumped)

Hmm, this command works for me just fine.  I'm running Cygwin 1.3.12
and fileutils 4.1.

    $ uname -a
    CYGWIN_NT-4.0 NTDEVEL 1.3.12(0.54/3/2) 2002-07-03 16:42 i686 unknown
    $ zgrep ln.exe /etc/setup/*.lst.gz
    /etc/setup/fileutils.lst.gz:usr/bin/ln.exe
    $ grep fileutils /etc/setup/installed.db
    fileutils fileutils-4.1-1.tar.bz2 0

Check if you have multiple copies of cygwin1.dll, and see if have
any aliases or scripts also named 'ln' that might be executed instead
of /bin/ln.exe.

Hope this helps.

-- 
Dario Alcocer -- Sr. Software Developer, Helix Digital Inc.
alcocer@helixdigital.com -- http://www.helixdigital.com

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Re: problem with the link command : ln

[Dr. Wayne Keen]

> Check if you have multiple copies of cygwin1.dll, and see if have
> any aliases or scripts also named 'ln' that might be executed instead
> of /bin/ln.exe.

This is a good point.  One of the first steps when a command seems to
be having problems is to do a which on the command to find out
where it is coming from, i.e.

which ln 

that in my case returns

/usr/bin/ln

See my post from a earlier today about multiple copies of cygwin1.dll.
I thought I was pretty smart about that, but I found an application,
ds9, had put not one, but maybe two different versions of cygwin1.dll
on my system.

Wayne Keen

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