* system calls
@ 2005-01-29 13:53 Rodrigo Ramos
2005-01-29 17:47 ` Robert Love
0 siblings, 1 reply; 4+ messages in thread
From: Rodrigo Ramos @ 2005-01-29 13:53 UTC (permalink / raw)
To: linux-kernel
Hi,
I would like to know how many groups of system calls are there at Linux
2.4 and 2.6? Where can I find these informations in the Kernel?
Best Regards,
Rodrigo Ramos
www.triforsec.com.br
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: system calls
2005-01-29 13:53 system calls Rodrigo Ramos
@ 2005-01-29 17:47 ` Robert Love
2005-01-29 18:15 ` Andries Brouwer
2005-01-31 12:04 ` Rodrigo Ramos
0 siblings, 2 replies; 4+ messages in thread
From: Robert Love @ 2005-01-29 17:47 UTC (permalink / raw)
To: Rodrigo Ramos; +Cc: linux-kernel
On Sat, 2005-01-29 at 10:53 -0300, Rodrigo Ramos wrote:
> I would like to know how many groups of system calls are there at Linux
> 2.4 and 2.6? Where can I find these informations in the Kernel?
I don't know what you mean by groups (a nonempty set G with binary
operation * s.t. G is associativity, there exists e in G s.t. e*a=a*e=a,
and there exists i in G s.t. i*b=b*i=e?).
System calls are implemented per-architecture. You can see the list at
the bottom of arch/i386/kernel/entry.S. There is about 290.
System calls are prefixed by "sys_". Thus, read(2) is implemented in
the kernel as sys_read(). It, for example, can be found in
fs/read_write.c.
Hope this helps.
Robert Love
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: system calls
2005-01-29 17:47 ` Robert Love
@ 2005-01-29 18:15 ` Andries Brouwer
2005-01-31 12:04 ` Rodrigo Ramos
1 sibling, 0 replies; 4+ messages in thread
From: Andries Brouwer @ 2005-01-29 18:15 UTC (permalink / raw)
To: Robert Love; +Cc: Rodrigo Ramos, linux-kernel
On Sat, Jan 29, 2005 at 12:47:38PM -0500, Robert Love wrote:
> System calls are prefixed by "sys_". Thus, read(2) is implemented in
> the kernel as sys_read().
Now that you say this - of course you know that the actual
situation is much more messy. Sometimes I wonder whether
it would be useful to make such a statement more true
and for example change sys_olduname, sys_uname, sys_newuname
into sys_oldolduname, sys_olduname, sys_uname.
Andries
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: system calls
2005-01-29 17:47 ` Robert Love
2005-01-29 18:15 ` Andries Brouwer
@ 2005-01-31 12:04 ` Rodrigo Ramos
1 sibling, 0 replies; 4+ messages in thread
From: Rodrigo Ramos @ 2005-01-31 12:04 UTC (permalink / raw)
To: Robert Love; +Cc: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1099 bytes --]
Hi Robert,
Thank you very much for your help. It really helped me.
When a say groups a mean classes like File Structure, Process Related
and etc. But I already got what I needed... Once again Thank you very
much.
Best Regards,
Rodrigo Ramos
http://www.triforsec.com.br
On Sat, 2005-01-29 at 14:47, Robert Love wrote:
> On Sat, 2005-01-29 at 10:53 -0300, Rodrigo Ramos wrote:
>
> > I would like to know how many groups of system calls are there at Linux
> > 2.4 and 2.6? Where can I find these informations in the Kernel?
>
> I don't know what you mean by groups (a nonempty set G with binary
> operation * s.t. G is associativity, there exists e in G s.t. e*a=a*e=a,
> and there exists i in G s.t. i*b=b*i=e?).
>
> System calls are implemented per-architecture. You can see the list at
> the bottom of arch/i386/kernel/entry.S. There is about 290.
>
> System calls are prefixed by "sys_". Thus, read(2) is implemented in
> the kernel as sys_read(). It, for example, can be found in
> fs/read_write.c.
>
> Hope this helps.
>
> Robert Love
>
>
>
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2005-01-29 13:53 system calls Rodrigo Ramos
2005-01-29 17:47 ` Robert Love
2005-01-29 18:15 ` Andries Brouwer
2005-01-31 12:04 ` Rodrigo Ramos
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