Date: Tue, 31 Jul 2007 15:08:26 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Saifi Khan <saifi@twincling.org> Cc: freebsd-questions@freebsd.org Subject: Re: __sys_fcntl() definition ? Message-ID: <20070731200826.GB8962@dan.emsphone.com> In-Reply-To: <Pine.LNX.4.64.0708010106130.3637@speed.localdomain> References: <Pine.LNX.4.64.0708010106130.3637@speed.localdomain>
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In the last episode (Aug 01), Saifi Khan said:
> 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 ?
Those are stub functions that invoke the equivalent syscall in the
kernel. The "${SASM}:" rule in /usr/src/lib/libc/sys/Makefile.inc is
what generates the stubs themselves. The actual code for most syscalls
in the kernel is in /usr/src/sys/kern/ .
--
Dan Nelson
dnelson@allantgroup.com
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