Date: Sun, 7 Nov 2004 21:17:02 -0500 From: "Kurt J. Lidl" <lidl@pix.net> To: Dan Strick <strick@covad.net> Cc: dan@mist.nodomain Subject: Re: Where is the source to the system calls? Message-ID: <20041107211702.A7038@pix.net> In-Reply-To: <200411080029.iA80TgJ0040646@mist.nodomain>; from strick@covad.net on Sun, Nov 07, 2004 at 04:29:42PM -0800 References: <200411080029.iA80TgJ0040646@mist.nodomain>
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On Sun, Nov 07, 2004 at 04:29:42PM -0800, Dan Strick wrote: > Does anyone know where the system calls are really defined? > I followed open() to _open() to __sys_open() which seems > to be part of something called libc_r before I ran into a > blank wall. I grepped all of the regular files in /usr/src > and /usr/include and turned up nothing. I even tried > grepping for open in the output of "nm -g /usr/lib/libc.a". > There is no __sys_open() in libc. Am I dealing with > C-compiler magic? Secret macro instructions invoking > undocumented gnu C-compiler asm() features? A CIA plot? > > Is any of this low level structure documented anywhere? Grok the following: /usr/src/lib/libc/sys/Makefile.inc /usr/src/sys/sys/syscall.mk -Kurt
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