Date: Sun, 10 Aug 1997 19:41:53 -0700 (PDT) From: Annelise Anderson <andrsn@andrsn.stanford.edu> To: freebsd-questions@freebsd.org Subject: Question (fwd) Message-ID: <Pine.BSF.3.96.970810193928.1686A-100000@andrsn.stanford.edu>
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I am forwarding this--I think a previous message from the same person
was also forwarded--because it deserves, I think, more than I can
manage. Please reply to him rather than me.
Annelise
---------- Forwarded message ----------
Date: Mon, 11 Aug 1997 09:37:33 +0000
From: Wang Huaibo <bu-fl@cs.sjtu.edu.cn>
To: Annelise Anderson <andrsn@andrsn.stanford.edu>
Subject: Question
Annelise Anderson wrote:
>
> On Thu, 24 Jul 1997, Wang Huaibo wrote:
>
> All the sources are available....some of the files themselves are
> created when the system is installed. Could you tell me which
> core or critical files you cannot find? Perhaps then I could
> help more.
>
> Annelise
================================================================
Thanks for your reply, I collect some puzzles encountered
when I read FreeBSD 1.5, they provent me from undersdtanding
and re-building it:
1.in init_main.c,there is two lines:
static void dummyinit() {}
TEXT_SET(pseudo_set, dummyinit);
I think,pseudo_set contains all device detect-and-setup entries,
so, in files such as isa.c,there must be such lines like:
TEXT_SET( pseudo_set,???_init );
but I searched the string "pseudo_set" in all files only to
see it is only found in init_main.c
2.in file fdc.c, two header file,say,
fd.h and fdc.h, are included, but I only can locate one of them.
3.I tried to analyse the way that system call are done,
I set off from source code of LibC, but function such as open()
can not be found.
...
I had supposed that the source code just let us know
how it works rather than how it is constructed.
I like unix, but I don't like its limited-scalability,
I mean, unlike in DOS, we can extend the system just
by hooking some INTs, even in Win 3.1/95, we can extend
the system by hooking APIs.
Best regards
Wang Huaibo
8.10
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