Re: puzzle about open in kernel

["coywolf" <coywolf@lovecn.org>]

It's in usermode, so sys_open() is not available, here we have to use open.

Coywolf

----- Original Message -----
From: "madsys" <admin@ercist.iscas.ac.cn>
To: <kernelnewbies@nl.linux.org>
Sent: Friday, December 05, 2003 3:17 PM
Subject: puzzle about open in kernel


> hi all,
>
> I have a puzzle about open() in kernel lately.
>
> see below please:
>
> init/main.c [init()]:
> ---snip---
> if (open("/dev/console", O_RDWR, 0) < 0)
> printk("Warning: unable to open an initial console.\n");
> ---snip---
>
>     I know that open() is a wrapper of system call. But who can tell me
why the kernel use system call "open" instead of the direct sys_open
function in the kernel? Can we change it to the sys_open function here?
>
>
> thanx in advanced!
> madsys
>
>
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
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>

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