[LUATEX] uname() volunteers needed

[LUATEX] uname() volunteers needed

[Taco Hoekwater]

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Hi all,

This is a little offtopic (it deals with luatex only) but as
Mojca said:  there are many more luatex-using people here than
on dev-luatex.



In a discussion with Yue Wang he convinced me that it would
be better to use uname() for finding os.name instead of the
current jungle of #ifdefs.

Because I do not want to alter the lua return values, that
means I will have to interpret the contents of the returned
structure a bit. To do that, I would appreciate it if the people
on a non-linux32intel platform would compile and run the
attached minimalistic C file.

Thanks in advance,
Taco


[-- Attachment #2: test-uname.c --]
[-- Type: text/x-csrc, Size: 380 bytes --]


#include <sys/utsname.h>
#include <stdio.h>


int main () {
  struct utsname uts;
  if (uname(&uts)) {
    puts("uname() failed");
  } else {
    printf("sysname:  %s\n", uts.sysname);
    printf("nodename: %s\n", uts.nodename);
    printf("release:  %s\n", uts.release);
    printf("version:  %s\n", uts.version);
    printf("machine:  %s\n", uts.machine);
  }
  return 0;
}




[-- Attachment #3: Type: text/plain, Size: 487 bytes --]

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Re: [LUATEX] uname() volunteers needed

[Thomas A. Schmitz]

On May 21, 2008, at 2:11 PM, Taco Hoekwater wrote:

> Because I do not want to alter the lua return values, that
> means I will have to interpret the contents of the returned
> structure a bit. To do that, I would appreciate it if the people
> on a non-linux32intel platform would compile and run the
> attached minimalistic C file.
>
> Thanks in advance,
> Taco

Hi Taco,

on i386-darwin, the file doesn't compile (I saved the file as "mini"):

ld: warning in mini, file is not of required architecture
Undefined symbols:
   "_main", referenced from:
       start in crt1.10.5.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

Thomas
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Re: [LUATEX] uname() volunteers needed

[Yue Wang]

> on i386-darwin, the file doesn't compile (I saved the file as "mini"):
>
> ld: warning in mini, file is not of required architecture
> Undefined symbols:
>   "_main", referenced from:
>       start in crt1.10.5.o
> ld: symbol(s) not found
> collect2: ld returned 1 exit status
>

Are you sure you copy the right source code? Here is the result on Mac
OS X intel 10.5:

$ gcc -Wall test.c -o test
epicalyx:c jjgod$ ./test
sysname:  Darwin
nodename: epicalyx.local
release:  9.2.2
version:  Darwin Kernel Version 9.2.2: Tue Mar  4 21:17:34 PST 2008;
root:xnu-1228.4.31~1/RELEASE_I386
machine:  i386
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Re: [LUATEX] uname() volunteers needed

[Thomas A. Schmitz]

On May 21, 2008, at 2:59 PM, Yue Wang wrote:

> Are you sure you copy the right source code? Here is the result on Mac
> OS X intel 10.5:
>
> $ gcc -Wall test.c -o test
> epicalyx:c jjgod$ ./test
> sysname:  Darwin
> nodename: epicalyx.local
> release:  9.2.2
> version:  Darwin Kernel Version 9.2.2: Tue Mar  4 21:17:34 PST 2008;
> root:xnu-1228.4.31~1/RELEASE_I386
> machine:  i386

Oops, sorry, you're right... To make up for it, I can at least send  
Taco the output from a linux-ppc box:

sysname:  Linux
nodename: g5
release:  2.6.23-gentoo
version:  #2 SMP Fri Oct 19 10:37:53 CEST 2007
machine:  ppc64

Thomas
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Re: [LUATEX] uname() volunteers needed

[Jin-Hwan Cho]

On May 21, 2008, at 9:11 PM, Taco Hoekwater wrote:

> In a discussion with Yue Wang he convinced me that it would
> be better to use uname() for finding os.name instead of the
> current jungle of #ifdefs.
>
> Because I do not want to alter the lua return values, that
> means I will have to interpret the contents of the returned
> structure a bit. To do that, I would appreciate it if the people
> on a non-linux32intel platform would compile and run the
> attached minimalistic C file.

My Intel-based Leopard shows the following result:

sysname:  Darwin
nodename: jin-hwan-chos-macbook.local
release:  9.2.2
version:  Darwin Kernel Version 9.2.2: Tue Mar  4 21:17:34 PST 2008;  
root:xnu-1228.4.31~1/RELEASE_I386
machine:  i386

Best regards, ChoF.
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Re: [LUATEX] uname() volunteers needed

[Arthur Reutenauer]

> This is a little offtopic (it deals with luatex only) but as
> Mojca said:  there are many more luatex-using people here than
> on dev-luatex.

  You could also try tlbuild@tug.org, the list of people building
binaries for TeX Live, where you can find people running all sorts of
architectures.  We're in the process of committing binaries for TeX Live
2008 right now, so running a small test would be a welcome distraction
and a matter of seconds.

  Anyway:

>                  To do that, I would appreciate it if the people
> on a non-linux32intel platform would compile and run the
> attached minimalistic C file.

  You're going to love that: on Solaris compilation works fine, but
execution prints “uname() failed”.  And indeed, the section 2 man page
for uname explains:

RETURN VALUES
     Upon  successful  completion,  a   non-negative   value   is
     returned.  Otherwise,  -1  is  returned  and errno is set to
     indicate the error.

  (In that case, it returned 1).  Looks like you have to check for errno ...

  Apart from that, the struct actually contains:

sysname:  SunOS
nodename: harmakis
release:  5.9
version:  Generic_117171-07
machine:  sun4u

  I also tested on Sparc Linux:

sysname:  Linux
nodename: notung
release:  2.6.22-14-sparc64
version:  #1 Sun Oct 14 21:57:46 GMT 2007
machine:  sparc64

 Note that “sun4u” means more or less the same than “sparc64”.

	Arthur
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Re: [LUATEX] uname() volunteers needed

[Yue Wang]

Hi,

>  You're going to love that: on Solaris compilation works fine, but
> execution prints "uname() failed".  And indeed, the section 2 man page
> for uname explains:

I am aware of that because there is some solaris users encountered the
same failure here.
It seems that we should use umask() function first.
I had nudged Taco about that problem and provided a possible solution just ago.

Yue Wang
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Re: [LUATEX] uname() volunteers needed

[Martin Schröder]

2008/5/21 Arthur Reutenauer <arthur.reutenauer@normalesup.org>:
>  (In that case, it returned 1).  Looks like you have to check for errno ...

No; instead of (uname(&uts)) it should be (uname(&uts) < 0) .

Best
   Martin
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Re: [LUATEX] uname() volunteers needed

[Arthur Reutenauer]

> No; instead of (uname(&uts)) it should be (uname(&uts) < 0) .

  Well, no: if the function fails on Linux and returns, say, 1, this
test wouldn't catch it.  But Taco knows what to do, and the discussion
is getting even more off-topic :-)

	Arthur
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Re: [LUATEX] uname() volunteers needed

[Martin Schröder]

2008/5/22 Arthur Reutenauer <arthur.reutenauer@normalesup.org>:
>> No; instead of (uname(&uts)) it should be (uname(&uts) < 0) .
>
>  Well, no: if the function fails on Linux and returns, say, 1, this
> test wouldn't catch it.  But Taco knows what to do, and the discussion

>From uname(2) on Linux:
RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and
errno is set appropriately.

And SUS3 has this:
       Upon successful completion, a non-negative value shall be
returned. Otherwise, -1 shall be returned and errno set to indicate
the error.

Best
   Martin
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Re: [LUATEX] uname() volunteers needed

[Arthur Reutenauer]

> And SUS3 has this:
>        Upon successful completion, a non-negative value shall be
> returned. Otherwise, -1 shall be returned and errno set to indicate
> the error.

  Ah, OK.

	Arthur
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Re: [LUATEX] uname() volunteers needed

[Yue Wang]

Hi, Arthur and Taco


On 5/22/08, Arthur Reutenauer <arthur.reutenauer@normalesup.org> wrote:
> > No; instead of (uname(&uts)) it should be (uname(&uts) < 0) .
>
>  Well, no: if the function fails on Linux and returns, say, 1, this
> test wouldn't catch it.  But Taco knows what to do, and the discussion
> is getting even more off-topic :-)
>

No, It wont. In Linux/FreeBSD/Mac OS X, -1 will return if it failed. I
am pretty sure about that because I read the manual pages of these
operating systems yesterday.


Again, see the Open Group Specification,  (all the Unix and Unix like
operating system should follow the Open Group Specification or
otherwise it cannot be called Unix or Unix like. There is no need for
us to pay attention to the non-Unix(like) systems apart from
Windows.):

http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/utsname.h.html

The return value section:  A NON-NEGATIVE VALUE shall be returned.
Otherwise -1 should be returned and set errono to indicate an error.

so we should better write our program like this:

if (uname(&uts)<0) {  /*or we can also say if uname(&uts)==-1*/
    puts("uname() failed");
}

Here Taco, as I said yesterday, there is no need to leave a #ifdef for
the solaris operating system. Just remove all the jungles and remain
only one #ifdef for Windows system, and leave the rest time to spend a
good weekend:)

>Because I do not want to alter the lua return values, that means I will have to interpret the contents of the returned structure a bit.

I think it is better to only return a table while calling the Lua
function. The table contains key=value pairs for
{sysname=,nodename=,release=, version=,machine=}. For Windows, you
just fill these names by hand instead(easy, isn't it?). Keep the
problem small and simple, as well as flexible, and leave everything
toplevel for higher programs like ConTeXt. LuaTeX is going public in
months, so before that every major API change is OK to the developers.
After public, changing APIs will make other developers unhappy.

Yue Wang
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Re: [LUATEX] uname() volunteers needed

[Taco Hoekwater]

Hi,

Yue Wang wrote:
> 
> I think it is better to only return a table while calling the Lua
> function. The table contains key=value pairs for
> {sysname=,nodename=,release=, version=,machine=}. For Windows, you
> just fill these names by hand instead(easy, isn't it?). 

Easy to say, sure. You are not on windows either, I assume?

Anyway, 0.30.0 will have both the old and the new ( os.uname()
function), and the old variables will not go away until 0.40.0.

> LuaTeX is going public in
> months, so before that every major API change is OK to the developers.
> After public, changing APIs will make other developers unhappy.

I do not know what you are referring to. Nothing in the API is
fixed until 1.0.0, and that is still a few years off !

Best wishes,
Taco


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Re: [LUATEX] uname() volunteers needed

[luigi scarso]

On Thu, May 22, 2008 at 1:21 PM, Taco Hoekwater <taco@elvenkind.com> wrote:
>
> Hi,
>
> Yue Wang wrote:
>>
>> I think it is better to only return a table while calling the Lua
>> function. The table contains key=value pairs for
>> {sysname=,nodename=,release=, version=,machine=}. For Windows, you
>> just fill these names by hand instead(easy, isn't it?).
>
> Easy to say, sure. You are not on windows either, I assume?
>
> Anyway, 0.30.0 will have both the old and the new ( os.uname()
> function), and the old variables will not go away until 0.40.0.
>
>> LuaTeX is going public in
>> months, so before that every major API change is OK to the developers.
>> After public, changing APIs will make other developers unhappy.
>
> I do not know what you are referring to. Nothing in the API is
> fixed until 1.0.0, and that is still a few years off !
hmm, we must what david says about that, see
http://granthinam.blogspot.com/search/label/Conference report
"Kastrup, one of the developers of LuaTeX,"

:))))))))))))))


-- 
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it's new .
it's powerful .
it's luatex .
http://www.luatex.org
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Re: [LUATEX] uname() volunteers needed

[Hans Hagen]

luigi scarso wrote:
> On Thu, May 22, 2008 at 1:21 PM, Taco Hoekwater <taco@elvenkind.com> wrote:
>> Hi,
>>
>> Yue Wang wrote:
>>> I think it is better to only return a table while calling the Lua
>>> function. The table contains key=value pairs for
>>> {sysname=,nodename=,release=, version=,machine=}. For Windows, you
>>> just fill these names by hand instead(easy, isn't it?).
>> Easy to say, sure. You are not on windows either, I assume?
>>
>> Anyway, 0.30.0 will have both the old and the new ( os.uname()
>> function), and the old variables will not go away until 0.40.0.
>>
>>> LuaTeX is going public in
>>> months, so before that every major API change is OK to the developers.
>>> After public, changing APIs will make other developers unhappy.
>> I do not know what you are referring to. Nothing in the API is
>> fixed until 1.0.0, and that is still a few years off !
> hmm, we must what david says about that, see
> http://granthinam.blogspot.com/search/label/Conference report
> "Kastrup, one of the developers of LuaTeX,"

funny, the luatex team is 3*h (hoekwater, henkel & hagen) ... small is 
beautiful (efficient and effective) -)


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Re: [LUATEX] uname() volunteers needed

[luigi scarso]

>> hmm, we must what david says about that, see
>> http://granthinam.blogspot.com/search/label/Conference report
>> "Kastrup, one of the developers of LuaTeX,"
>
> funny, the luatex team is 3*h (hoekwater, henkel & hagen) ... small is
> beautiful (efficient and effective) -)
yes, but
3hk
is one thousand 3h..

Sorry I cannot resist....
:)))))
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it's new .
it's powerful .
it's luatex .
http://www.luatex.org
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Re: [LUATEX] uname() volunteers needed

[Hans Hagen]

Yue Wang wrote:
> Hi, Arthur and Taco
> 
> 
> On 5/22/08, Arthur Reutenauer <arthur.reutenauer@normalesup.org> wrote:
>>> No; instead of (uname(&uts)) it should be (uname(&uts) < 0) .
>>  Well, no: if the function fails on Linux and returns, say, 1, this
>> test wouldn't catch it.  But Taco knows what to do, and the discussion
>> is getting even more off-topic :-)
>>
> 
> No, It wont. In Linux/FreeBSD/Mac OS X, -1 will return if it failed. I
> am pretty sure about that because I read the manual pages of these
> operating systems yesterday.

i suggest to direct mails about this topic to taco directly

Hans


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Re: [LUATEX] uname() volunteers needed

[Peter Münster]

On Wed, May 21 2008, Taco Hoekwater wrote:

> Because I do not want to alter the lua return values, that
> means I will have to interpret the contents of the returned
> structure a bit. To do that, I would appreciate it if the people
> on a non-linux32intel platform would compile and run the
> attached minimalistic C file.

Result on openSUSE-x86_64:

sysname:  Linux
nodename: gaston
release:  2.6.23.1-13-default
version:  #1 SMP 2007/11/01 23:00:04 UTC
machine:  x86_64

Cheers, Peter

-- 
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Re: [LUATEX] uname() volunteers needed

[Diego Depaoli]

2008/5/21 Taco Hoekwater <taco@elvenkind.com>:
> Hi all,
>
> This is a little offtopic (it deals with luatex only) but as
> Mojca said:  there are many more luatex-using people here than
> on dev-luatex.


sysname:  FreeBSD
nodename: genipizza.casadep.home
release:  8.0-CURRENT
version:  FreeBSD 8.0-CURRENT #0: Tue May 13 23:26:04 CEST 2008
machine:  i386

-- 
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Re: [LUATEX] uname() volunteers needed

[Gour]

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>>>>> "Taco" == Taco Hoekwater <taco@elvenkind.com> writes:

Hi!

Taco> Thanks in advance, Taco

Output on my x86-64 laptop

gour@nitai ~> uname -a
Linux nitai 2.6.24-zen5-20080404 #6 SMP PREEMPT Fri Apr 4 13:18:03 CEST
2008 x86_64 AMD Turion(tm) 64 Mobile ML-34 AuthenticAMD GNU/Linux

gives:

sysname:  Linux
nodename: nitai
release:  2.6.24-zen5-20080404
version:  #6 SMP PREEMPT Fri Apr 4 13:18:03 CEST 2008
machine:  x86_64


Sincerely,
Gour


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Re: [LUATEX] uname() volunteers needed

[Michael Hallgren]

Le mercredi 21 mai 2008 à 22:09 +0200, Gour a écrit :
> >>>>> "Taco" == Taco Hoekwater <taco@elvenkind.com> writes:
> 
> Hi!

'lo,

mh@home:~/Documents/Tata$ uname -a
Linux home 2.6.24-17-generic #1 SMP Thu May 1 14:31:33 UTC 2008 i686
GNU/Linux
mh@home:~/Documents/Tata$ 

RAS

mh



> 
> Taco> Thanks in advance, Taco
> 
> Output on my x86-64 laptop
> 
> gour@nitai ~> uname -a
> Linux nitai 2.6.24-zen5-20080404 #6 SMP PREEMPT Fri Apr 4 13:18:03 CEST
> 2008 x86_64 AMD Turion(tm) 64 Mobile ML-34 AuthenticAMD GNU/Linux
> 
> gives:
> 
> sysname:  Linux
> nodename: nitai
> release:  2.6.24-zen5-20080404
> version:  #6 SMP PREEMPT Fri Apr 4 13:18:03 CEST 2008
> machine:  x86_64
> 
> 
> Sincerely,
> Gour
> 
> 
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Re: uname() volunteers needed

[Taco Hoekwater]

Hi All,

Just to wrap this up: thanks everybody for their results,
it has been useful.  The luatex trunk now has support for
os.uname(), also under Windows.

Some people may find it interesting to see the outcome of
this mini-survey. Here is a tally of what I received from
various people, besides my own Linux/i386-es, and Hans'
Windows Vista/i686:

1 CYGWIN_NT-5.1/i686
6 Darwin/i386
2 Darwin/Power Macintosh
1 FreeBSD/amd64
1 FreeBSD/i386
1 HP-UX/ia64
1 IRIX64/IP27
1 IRIX/IP32
1 Linux/i686
2 Linux/ppc
1 Linux/ppc64
2 Linux/sparc64
5 Linux/x86_64
1 OpenBSD/i386
1 OpenVMS/HP_rx2600__(1.40GHz/1.5MB)
2 SunOS/sun4u

Best wishes,
Taco

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Re: [LUATEX] uname() volunteers needed

[Mojca Miklavec]

On Wed, May 21, 2008 at 2:11 PM, Taco Hoekwater wrote:
>
> In a discussion with Yue Wang he convinced me that it would
> be better to use uname() for finding os.name instead of the
> current jungle of #ifdefs.
>
> Because I do not want to alter the lua return values, that
> means I will have to interpret the contents of the returned
> structure a bit. To do that, I would appreciate it if the people
> on a non-linux32intel platform would compile and run the
> attached minimalistic C file.

Oh, yes ... the garden returns

sysname:  Linux
nodename: paris
release:  2.6.18
version:  #1 SMP Sun Feb 10 17:55:04 UTC 2008
machine:  x86_64

and runs in 32-bit mode. I guess there is no way to fix that (on the
server side), right? Unaltered minimals with automatic platform
recognition already fail to work already anyway.

Mojca
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