Re: Fork and Exec a process within the kernel

[Erik Mouw]

On Wed, Aug 11, 2004 at 07:24:42AM -0400, Richard B. Johnson wrote:
> On Wed, 11 Aug 2004, Erik Mouw wrote:
> > Please don't mislead newbies, Richard. /dev/console is NOT a link to
> > /dev/tty0, it's a completely different device:
> >
> > erik@abra2:~ >ls -l /dev/console
> > crw-------    1 root     tty        5,   1 Apr  7 09:13 /dev/console
> > erik@abra2:~ >ls -l /dev/tty0
> > crw-------    1 root     tty        4,   0 Feb 10  2000 /dev/tty0
> >
> 
> Bullshit. I know how to use `file`.
> 
> Script started on Wed Aug 11 07:21:39 2004
> # file /dev/console
> /dev/console: symbolic link to /dev/tty0

It might be a symlink on your machine, but that doesn't mean it's the
right way. For almost 7 years, /dev/console is a separate device, not a
symlink. Here's the relevant section from Documentation/devices.txt:

  The console device, /dev/console, is the device to which system
  messages should be sent, and on which logins should be permitted in
  single-user mode.  Starting with Linux 2.1.71, /dev/console is managed
  by the kernel; for previous versions it should be a symbolic link to
  either /dev/tty0, a specific virtual console such as /dev/tty1, or to
  a serial port primary (tty*, not cu*) device, depending on the
  configuration of the system.

Linux-2.1.71 was released on December 4, 1997. In your signature you
claim to run linux-2.4.26. Please update your system.


Erik

-- 
+-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
| Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
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