Subject: Re: Filesystems that don't support devices
To: Ben Harris <email@example.com>
From: Gavan Fantom <firstname.lastname@example.org>
Date: 12/19/2001 19:54:51
On Wed, 19 Dec 2001, Ben Harris wrote:
> How about just checking if /dev/console exists and is a device, or if there
> are any devices at all in /dev?
The code currently looks like this:
if (statfs("/", &sfs) == -1)
if (strcmp(sfs.f_fstypename, MOUNT_MSDOS) != 0)
/* If we have devices, we cannot be on msdosfs */
if (access(_PATH_CONSOLE, F_OK) != -1)
So /dev/console already has to exist, but actually on an msdos filesystem.
Maybe removing the check for an msdos filesystem and just checking for
existence of a console device would be enough?
> If you really need to have the code not run on a filesystem that
> supports devices, you could tentatively mknod one and see if it works.
Wouldn't that also fail on an ffs mounted read-only, such as is usually
the case on a normally configured system?
I guess my question is now whether just removing the test for msdos and
relying on testing for the presence of /dev/console is safe and sensible.
Gillette - the best a man can forget