How to call syscalls - SYSCALL or 0x80 interrupt

How to call syscalls - SYSCALL or 0x80 interrupt

[Dipanjan Das]

Hi,

I came across this discussion in StackExchange
<http://unix.stackexchange.com/questions/61891/linux-kernel-3-2-syscalls>.
Does anyone have any idea on this?
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How to call syscalls - SYSCALL or 0x80 interrupt

[Greg KH]

On Tue, Jun 03, 2014 at 09:45:33AM +0530, Dipanjan Das wrote:
> 
> Hi,
> 
> I came across this discussion in StackExchange. Does anyone have any idea on
> this?

Yes, the code looks correct, the question asked is incorrect :)

How to call syscalls - SYSCALL or 0x80 interrupt

[Dipanjan Das]

Is in incorrect because the execve() call in the code is to the libc stub
but not the actual syscall itself?


On 3 June 2014 10:19, Greg KH <greg@kroah.com> wrote:

> On Tue, Jun 03, 2014 at 09:45:33AM +0530, Dipanjan Das wrote:
> >
> > Hi,
> >
> > I came across this discussion in StackExchange. Does anyone have any
> idea on
> > this?
>
> Yes, the code looks correct, the question asked is incorrect :)
>
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How to call syscalls - SYSCALL or 0x80 interrupt

[Greg KH]

On Tue, Jun 03, 2014 at 11:03:25AM +0530, Dipanjan Das wrote:
> 
> Is in incorrect because the execve() call in the code is to the libc stub but
> not the actual syscall itself?

Yes.

can't find <asm/system.h>

[jinzhao at wingtech.com]

Dears:
My system is ubuntu 12.04. In my code, I include the file <asm/system.h>, but when compiling the code, show the error as "can't find the file or directory asm/system.h". Why??

Thanks!
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can't find <asm/system.h>

[Varka Bhadram]

What is the kernel version that your are using?

If the kernel version > 3.3
#inclued asm/switch_to.h [0]
else
#include <asm/system.h> [1]

Regards,
Varka Bhadram

[0] :
http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4
[1] : http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3


On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com> wrote:

>  Dears:
>  My system is ubuntu 12.04. In my code, I include the file <asm/system.h>, but
> when compiling the code, show the error as "can't find the file or directory
> asm/system.h". Why??
> 
>  Thanks!
> 
  _______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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can't find <asm/system.h>

[jinzhao at wingtech.com]

The kernel version is 3.11.0-20-generic 




jinzhao at wingtech.com

From: Varka Bhadram
Date: 2014-06-03 16:20
To: kernelnewbies; jinzhao
Subject: Re: can't find <asm/system.h>
What is the kernel version that your are using? 
 
If the kernel version > 3.3 
#inclued asm/switch_to.h [0] 
else 
#include <asm/system.h> [1] 
 
Regards, 
Varka Bhadram 
 
[0] : http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4 
[1] : http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3 
 

On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com> wrote: 
Dears: 
My system is ubuntu 12.04. In my code, I include the file <asm/system.h>, but when compiling the code, show the error as "can't find the file or directory asm/system.h". Why?? 
 
Thanks! 

  _______________________________________________ 
Kernelnewbies mailing list 
Kernelnewbies at kernelnewbies.org 
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies 

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can't find <asm/system.h>

[jinzhao at wingtech.com]

And I can find "system.h" in the path of " /usr/src/linux-headers-3.11.0-20-generic/arch/arm/include/asm ".




jinzhao at wingtech.com

From: jinzhao@wingtech.com
Date: 2014-06-03 16:24
To: Varka Bhadram; kernelnewbies
Subject: Re: Re: can't find <asm/system.h>
The kernel version is 3.11.0-20-generic 




jinzhao at wingtech.com

From: Varka Bhadram
Date: 2014-06-03 16:20
To: kernelnewbies; jinzhao
Subject: Re: can't find <asm/system.h>
What is the kernel version that your are using? 
If the kernel version > 3.3 
#inclued asm/switch_to.h [0] 
else 
#include <asm/system.h> [1] 
Regards, 
Varka Bhadram 
[0] : http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4 
[1] : http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3 

On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com> wrote: 
Dears: 
My system is ubuntu 12.04. In my code, I include the file <asm/system.h>, but when compiling the code, show the error as "can't find the file or directory asm/system.h". Why?? 
Thanks! 

  _______________________________________________ 
Kernelnewbies mailing list 
Kernelnewbies at kernelnewbies.org 
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies 

------------------------------------------------------------------------------------------------------------------------------- 
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can't find <asm/system.h>

[Varka Bhadram]

For which architecture you are compiling ?

On June 3, 2014 at 1:58 PM "jinzhao at wingtech.com" <jinzhao@wingtech.com> wrote:
?

>  And I can find "system.h" in the path of "
> /usr/src/linux-headers-3.11.0-20-generic/arch/arm/include/asm ".
> 
> 
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>  jinzhao at wingtech.com
> 
> 
>   From:  jinzhao at wingtech.com <mailto:jinzhao@wingtech.com>
>   Date: 2014-06-03 16:24
>   To:  Varka Bhadram <mailto:varkab@cdac.in> ; kernelnewbies
> <mailto:kernelnewbies@kernelnewbies.org>
>   Subject: Re: Re: can't find <asm/system.h>
> 
>  The kernel version is 3.11.0-20-generic
> 
> 
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>  jinzhao at wingtech.com
> 
> 
>   From:  Varka Bhadram <mailto:varkab@cdac.in>
>   Date: 2014-06-03 16:20
>   To:  kernelnewbies <mailto:kernelnewbies@kernelnewbies.org> ; jinzhao
> <mailto:jinzhao@wingtech.com>
>   Subject: Re: can't find <asm/system.h>
> 
>  What is the kernel version that your are using?
> 
>  If the kernel version > 3.3
>  #inclued asm/switch_to.h [0]
>  else
>  #include <asm/system.h> [1]
> 
>  Regards,
>  Varka Bhadram
> 
>  [0] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4
>  [1] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3
> 
> 
>  On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com>
> wrote:
> 
>   > >   Dears:
> >   My system is ubuntu 12.04. In my code, I include the file <asm/system.h>,
> > but when compiling the code, show the error as "can't find the file or
> > directory asm/system.h". Why??
> > 
> >   Thanks!
> > 
> >  >    _______________________________________________
>  Kernelnewbies mailing list
>  Kernelnewbies at kernelnewbies.org
>  http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> 
> 
> -------------------------------------------------------------------------------------------------------------------------------
>  [ C-DAC is on Social-Media too. Kindly follow us at:
>  Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]
> 
>  This e-mail is for the sole use of the intended recipient(s) and may
>  contain confidential and privileged information. If you are not the
>  intended recipient, please contact the sender by reply e-mail and destroy
>  all copies and the original message. Any unauthorized review, use,
>  disclosure, dissemination, forwarding, printing or copying of this email
>  is strictly prohibited and appropriate legal action will be taken.
> 
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> 
>  __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 9883 (20140602) __________
> 
>  The message was checked by ESET NOD32 Antivirus.
> 
>  http://www.eset.com <http://www.eset.com>
> 
  _______________________________________________
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can't find <asm/system.h>

[AYAN KUMAR HALDER]

Hi Jinzhao,

Did you specify the include path ( as /usr/src/linux-headers-3.11.
0-20-generic/arch/arm/ )
with -I option while compiling your code.

Regards,
Ayan Kumar Halder

On Tue, Jun 3, 2014 at 2:05 PM, Varka Bhadram <varkab@cdac.in> wrote:
> For which architecture you are compiling ?
>
> On June 3, 2014 at 1:58 PM "jinzhao at wingtech.com" <jinzhao@wingtech.com>
> wrote:
> ?
>
> And I can find "system.h" in the path of "
> /usr/src/linux-headers-3.11.0-20-generic/arch/arm/include/asm ".
>
> ________________________________
> jinzhao at wingtech.com
>
> From:  jinzhao at wingtech.com
> Date: 2014-06-03 16:24
> To:  Varka Bhadram; kernelnewbies
> Subject: Re: Re: can't find <asm/system.h>
> The kernel version is 3.11.0-20-generic
>
> ________________________________
> jinzhao at wingtech.com
>
> From:  Varka Bhadram
> Date: 2014-06-03 16:20
> To:  kernelnewbies; jinzhao
> Subject: Re: can't find <asm/system.h>
> What is the kernel version that your are using?
>
> If the kernel version > 3.3
> #inclued asm/switch_to.h [0]
> else
> #include <asm/system.h> [1]
>
> Regards,
> Varka Bhadram
>
> [0] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4
> [1] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3
>
>
> On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com>
> wrote:
>
> Dears:
> My system is ubuntu 12.04. In my code, I include the file <asm/system.h>,
> but when compiling the code, show the error as "can't find the file or
> directory asm/system.h". Why??
>
> Thanks!
>
>
>   _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> -------------------------------------------------------------------------------------------------------------------------------
> [ C-DAC is on Social-Media too. Kindly follow us at:
> Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]
>
> This e-mail is for the sole use of the intended recipient(s) and may
> contain confidential and privileged information. If you are not the
> intended recipient, please contact the sender by reply e-mail and destroy
> all copies and the original message. Any unauthorized review, use,
> disclosure, dissemination, forwarding, printing or copying of this email
> is strictly prohibited and appropriate legal action will be taken.
> -------------------------------------------------------------------------------------------------------------------------------
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 9883 (20140602) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>   _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> -------------------------------------------------------------------------------------------------------------------------------
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> Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]
>
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can't find <asm/system.h>

[Valdis.Kletnieks at vt.edu]

On Tue, 03 Jun 2014 14:23:22 +0800, "jinzhao at wingtech.com" said:
> In my code, I include the file <asm/system.h>, but when compiling the code,
> show the error as "can't find the file or directory asm/system.h". Why??

Probably because either:

1) Your Makefile isn't set up to use the Kbuild architecture, which should
take care of all that for you when building an out-of-tree module.
or
2) You haven't properly set up a kernel source tree to build against.
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can't find <asm/system.h>

[jinzhao at wingtech.com]

Hi, Ayan Kumar Halder:
I have changed the code to #include <asm/switch_io.h>, compile OK now.
I'll test it as you say too.

Thanks!



jinzhao at wingtech.com

From: AYAN KUMAR HALDER
Date: 2014-06-03 19:01
To: Varka Bhadram
CC: kernelnewbies; jinzhao
Subject: Re: Re: can't find <asm/system.h>
Hi Jinzhao,

Did you specify the include path ( as /usr/src/linux-headers-3.11.
0-20-generic/arch/arm/ )
with -I option while compiling your code.

Regards,
Ayan Kumar Halder

On Tue, Jun 3, 2014 at 2:05 PM, Varka Bhadram <varkab@cdac.in> wrote:
> For which architecture you are compiling ?
>
> On June 3, 2014 at 1:58 PM "jinzhao at wingtech.com" <jinzhao@wingtech.com>
> wrote:
> ?
>
> And I can find "system.h" in the path of "
> /usr/src/linux-headers-3.11.0-20-generic/arch/arm/include/asm ".
>
> ________________________________
> jinzhao at wingtech.com
>
> From:  jinzhao at wingtech.com
> Date: 2014-06-03 16:24
> To:  Varka Bhadram; kernelnewbies
> Subject: Re: Re: can't find <asm/system.h>
> The kernel version is 3.11.0-20-generic
>
> ________________________________
> jinzhao at wingtech.com
>
> From:  Varka Bhadram
> Date: 2014-06-03 16:20
> To:  kernelnewbies; jinzhao
> Subject: Re: can't find <asm/system.h>
> What is the kernel version that your are using?
>
> If the kernel version > 3.3
> #inclued asm/switch_to.h [0]
> else
> #include <asm/system.h> [1]
>
> Regards,
> Varka Bhadram
>
> [0] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/switch_to.h?v=3.4
> [1] :
> http://lxr.free-electrons.com/source/arch/x86/include/asm/system.h?v=3.3
>
>
> On June 3, 2014 at 11:53 AM "jinzhao at wingtech.com" <jinzhao@wingtech.com>
> wrote:
>
> Dears:
> My system is ubuntu 12.04. In my code, I include the file <asm/system.h>,
> but when compiling the code, show the error as "can't find the file or
> directory asm/system.h". Why??
>
> Thanks!
>
>
>   _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> -------------------------------------------------------------------------------------------------------------------------------
> [ C-DAC is on Social-Media too. Kindly follow us at:
> Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]
>
> This e-mail is for the sole use of the intended recipient(s) and may
> contain confidential and privileged information. If you are not the
> intended recipient, please contact the sender by reply e-mail and destroy
> all copies and the original message. Any unauthorized review, use,
> disclosure, dissemination, forwarding, printing or copying of this email
> is strictly prohibited and appropriate legal action will be taken.
> -------------------------------------------------------------------------------------------------------------------------------
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature
> database 9883 (20140602) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>   _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
> -------------------------------------------------------------------------------------------------------------------------------
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> Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ]
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