Date: Wed, 1 Aug 2007 08:13:31 +0530 (IST) From: Saifi Khan <saifi@twincling.org> To: freebsd-questions@freebsd.org Subject: Re: __sys_fcntl() definition ? Message-ID: <Pine.LNX.4.64.0708010808520.376@speed.localdomain> In-Reply-To: <Pine.LNX.4.43.0707311400060.18226@hymn01.u.washington.edu> References: <Pine.LNX.4.43.0707311400060.18226@hymn01.u.washington.edu>
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On Tue, 31 Jul 2007, youshi10@u.washington.edu wrote:
> Date: Tue, 31 Jul 2007 14:00:06 -0700 (PDT)
> From: <youshi10@u.washington.edu>
> To: Saifi Khan <saifi@twincling.org>
> Cc: <freebsd-questions@freebsd.org>
> Subject: Re: __sys_fcntl() definition ?
>
> On Wed, 1 Aug 2007, Saifi Khan wrote:
>
> > Hi:
> >
> > While working through the FreeBSD 6.2 codebase,
> > I saw the following functions referred at multiple places.
> >
> > __sys_fcntl()
> > __sys_open()
> > __sys_write()
> > ...
> >
> > Can somebody point out the file which contains the implementation
> > of the __sys_* functions ?
> >
> > Thanks in advance.
> >
> > thanks
> > Saifi.
>
> They're standard C library headers:
>
> man 2 fcntl
> man 2 open
> man 2 write
>
> Cheers,
> -Garrett
>
Hello Garrett:
In src/lib/libc/include/namespace.h (on line 64)
#define fcntl _fcntl
If you look at the _fcntl() definition on line 43 in
src/lib/libc_r/uthread/uthread_fcntl.c
you will see on line 66 the following code
/* Initialise the file descriptor table entry: */
if ((ret = __sys_fcntl(fd, cmd, oldfd)) < 0) {
My question is that where is the function definition
for this __sys_fcntl() ?
Thanks in advance.
thanks
Saifi.
TWINCLING Society
freedom of innovation
http://www.twincling.org/
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