cygport dropping *.exe links

cygport dropping *.exe links

[Marco Atzeri]

Hi Yaakov,
I just noted a strange effect

during installation phase of openmpi a certain numbers of links to exe 
files are created as

(cd /pub/devel/openmpi/64bit/openmpi-1.8.2rc4-1.x86_64/inst/usr/bin; rm 
-f mpirun.exe; ln -s orterun.exe mpirun.exe)

and they are there during the cyginstall
$ ls ../inst/usr/bin/
cygmpi_cxx-1.dll     cygopen-pal-6.dll  mpicxx       mpifort 
ompi-ps.exe       ortecc          orte
cygmpi_mpifh-2.dll   cygopen-rte-7.dll  mpiexec.exe  mpirun.exe 
ompi-server.exe   orte-clean.exe  orte
cygmpi_usempi-1.dll  mpic++             mpif77       ompi_info.exe 
ompi-top.exe      orted.exe       orte
cygmpi-1.dll         mpicc              mpif90       ompi-clean.exe 
opal_wrapper.exe  orte-info.exe   orte


but at post cyginstall phase they are gone:

$ ls ../inst/usr/bin/
cygmpi_cxx-1.dll     cygmpi-1.dll       mpic++  mpif77   ompi_info.exe 
    orte-clean.exe  orte-ps.exe
cygmpi_mpifh-2.dll   cygopen-pal-6.dll  mpicc   mpif90 
opal_wrapper.exe  orted.exe       orterun.exe
cygmpi_usempi-1.dll  cygopen-rte-7.dll  mpicxx  mpifort  ortecc

Is it possible that latest binutils update is fooling cygport ?
In the past, it seems they were renamed ( mpirun.exe to mpirun)

https://cygwin.com/packages/x86/openmpi/openmpi-1.7.5-1

Regards
Marco

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: cygport dropping *.exe links

[Marco Atzeri]

On 15/08/2014 13:26, Marco Atzeri wrote:
> Hi Yaakov,
> I just noted a strange effect
>

> Is it possible that latest binutils update is fooling cygport ?
> In the past, it seems they were renamed ( mpirun.exe to mpirun)
>

looking further, it seems not a cygport issue at all

$ touch a.exe
$ ln -s a.exe b.exe
  $ ls -l
total 1
-rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe

$ mv b.exe b
$ ls -l
total 0
-rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe


$ uname -svr
CYGWIN_NT-6.1-WOW64 1.7.32(0.274/5/3) 2014-08-13 23:03

Marco

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: cygport dropping *.exe links

[Corinna Vinschen]

[-- Attachment #1: Type: text/plain, Size: 880 bytes --]

On Aug 15 16:47, Marco Atzeri wrote:
> On 15/08/2014 13:26, Marco Atzeri wrote:
> >Hi Yaakov,
> >I just noted a strange effect
> >
> 
> >Is it possible that latest binutils update is fooling cygport ?
> >In the past, it seems they were renamed ( mpirun.exe to mpirun)
> >
> 
> looking further, it seems not a cygport issue at all
> 
> $ touch a.exe
> $ ln -s a.exe b.exe
>  $ ls -l
> total 1
> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
> lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe
> 
> $ mv b.exe b
> $ ls -l
> total 0
> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe

Looks like a bug in coreutils 8.23.  This works fine in coreutils-8.15.

Eric?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

[-- Attachment #2: Type: application/pgp-signature, Size: 819 bytes --]

Re: cygport dropping *.exe links

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 934 bytes --]

On 08/15/2014 09:16 AM, Corinna Vinschen wrote:
> On Aug 15 16:47, Marco Atzeri wrote:
>> On 15/08/2014 13:26, Marco Atzeri wrote:
>>> Hi Yaakov,
>>> I just noted a strange effect
>>>
>>
>>> Is it possible that latest binutils update is fooling cygport ?
>>> In the past, it seems they were renamed ( mpirun.exe to mpirun)
>>>
>>
>> looking further, it seems not a cygport issue at all
>>
>> $ touch a.exe
>> $ ln -s a.exe b.exe
>>  $ ls -l
>> total 1
>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
>> lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe
>>
>> $ mv b.exe b
>> $ ls -l
>> total 0
>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
> 
> Looks like a bug in coreutils 8.23.  This works fine in coreutils-8.15.
> 
> Eric?

Yep, I'm investigating.  :(

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 539 bytes --]

Re: cygport dropping *.exe links

[Marco Atzeri]

On 15/08/2014 19:02, Eric Blake wrote:
> On 08/15/2014 09:16 AM, Corinna Vinschen wrote:
>> On Aug 15 16:47, Marco Atzeri wrote:
>>> On 15/08/2014 13:26, Marco Atzeri wrote:

>>> looking further, it seems not a cygport issue at all
>>>
>>> $ touch a.exe
>>> $ ln -s a.exe b.exe
>>>   $ ls -l
>>> total 1
>>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
>>> lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe
>>>
>>> $ mv b.exe b
>>> $ ls -l
>>> total 0
>>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
>>
>> Looks like a bug in coreutils 8.23.  This works fine in coreutils-8.15.
>>
>> Eric?
>
> Yep, I'm investigating.  :(
>

Any news ?
It hit me again on cyport last update and I was forced to re-implement
a workaround patch.


Marco

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: cygport dropping *.exe links

[Eric Blake]

[-- Attachment #1: Type: text/plain, Size: 1207 bytes --]

On 08/15/2014 09:16 AM, Corinna Vinschen wrote:

Sorry for taking more than a month to get to the bottom of this one.
But I have good news:

>> $ touch a.exe
>> $ ln -s a.exe b.exe
>>  $ ls -l
>> total 1
>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
>> lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe
>>
>> $ mv b.exe b
>> $ ls -l
>> total 0
>> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
> 
> Looks like a bug in coreutils 8.23.  This works fine in coreutils-8.15.

Actually, this was an intentional upstream change made by coreutils
8.16, but which has a negative effect on cygwin .exe magic.  The real
reason for the change is this upstream testcase:

$ ln -s nowhere a
$ ln a b
$ mv a b
$ ls [ab]
b

In coreutils 8.15, this mistakenly errored out instead of deleting 'a'.
 But the upstream fix for this needs additional cygwin magic to realize
that when 'b' and 'b.exe' are both symlinks and have the same inode,
then it is the same as a case change, and NOT a case of hard link
renames.  I'm cooking up the patch now.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 539 bytes --]

Re: cygport dropping *.exe links

[Corinna Vinschen]

[-- Attachment #1: Type: text/plain, Size: 1405 bytes --]

On Sep 23 21:24, Eric Blake wrote:
> On 08/15/2014 09:16 AM, Corinna Vinschen wrote:
> 
> Sorry for taking more than a month to get to the bottom of this one.
> But I have good news:
> 
> >> $ touch a.exe
> >> $ ln -s a.exe b.exe
> >>  $ ls -l
> >> total 1
> >> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
> >> lrwxrwxrwx 1 marco Administrators 5 Aug 15 16:41 b.exe -> a.exe
> >>
> >> $ mv b.exe b
> >> $ ls -l
> >> total 0
> >> -rw-r--r-- 1 marco Administrators 0 Aug 15 16:41 a.exe
> > 
> > Looks like a bug in coreutils 8.23.  This works fine in coreutils-8.15.
> 
> Actually, this was an intentional upstream change made by coreutils
> 8.16, but which has a negative effect on cygwin .exe magic.  The real
> reason for the change is this upstream testcase:
> 
> $ ln -s nowhere a
> $ ln a b
> $ mv a b
> $ ls [ab]
> b
> 
> In coreutils 8.15, this mistakenly errored out instead of deleting 'a'.
>  But the upstream fix for this needs additional cygwin magic to realize
> that when 'b' and 'b.exe' are both symlinks and have the same inode,
> then it is the same as a case change, and NOT a case of hard link
> renames.  I'm cooking up the patch now.

Seems to work fine in 8.23-3.


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

[-- Attachment #2: Type: application/pgp-signature, Size: 819 bytes --]