Subject: bin/15236: init will only create an mfs /dev on an msdos root filesystem
To: None <firstname.lastname@example.org>
From: None <email@example.com>
Date: 01/13/2002 09:40:25
>Synopsis: init will only create an mfs /dev on an msdos root filesystem
>Arrival-Date: Sun Jan 13 09:41:00 PST 2002
>Originator: Gavan Fantom
>Release: NetBSD 1.5.2 on i386
If the root filesystem is an MSDOS filesystem and /dev/console is not present, init will create an mfs on /dev and run MAKEDEV all. This functionality is also useful on other filesystems that don't support devices, such as cd9660.
The check for msdos is currently a strcmp of the filesystem name with the string "msdos". A check is also made to see whether /dev/console exists and is a device, which seems to be a sufficient check anyway.
Boot a NetBSD system from CDROM (on a cd9660 filesystem) and observe that init does not create an mfs mounted on /dev.
Ideally there would be a way to determine whether a filesystem supports devices or not. But in this case it seems like sufficient checks are already being performed without the filesystem check. So here is a patch to remove the filesystem check.
The patch looks like this, although cut&paste into a browser won't preserve tabs :(
--- init.c.orig Sun Jan 13 17:19:20 2002
+++ init.c Sun Jan 13 17:33:09 2002
@@ -1369,13 +1369,6 @@
- struct statfs sfs;
- 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)