2.4.6: chattr / lsattr does not work on directories anymore!

2.4.6: chattr / lsattr does not work on directories anymore!

[Marc-Jano Knopp]

Since kernel 2.4.6, the commands 'lsattr' and 'chattr' do not work
anymore when applied to directories:

As root:

# mkdir x
# chattr +i x
chattr: Inappropriate ioctl for device while reading flags on x
# lsattr -d x
lsattr: Inappropriate ioctl for device While reading flags on x
#

The error message also appears when I try to get or set any of the
other ext2 flags. I need the ext2 immutable flag to protect some
of the directories on my system against accidental deletion (be it
my fault or a buggy program).

Kernels < 2.2.6 and 2.2.18 work fine.


Best regards,

  Marc-Jano
  

-- 
http://mjk.c64.org/

Re: 2.4.6: chattr / lsattr does not work on directories anymore!

[Andreas Dilger]

You write:
> Since kernel 2.4.6, the commands 'lsattr' and 'chattr' do not work
> anymore when applied to directories:
> 
> As root:
> 
> # mkdir x
> # chattr +i x
> chattr: Inappropriate ioctl for device while reading flags on x
> # lsattr -d x
> lsattr: Inappropriate ioctl for device While reading flags on x

This is fixed in the most recent Linus and -ac kernels.  The fix is below.

Cheers, Andreas
==========================================================================
--- linux-2.4.6.orig/fs/ext2/dir.c	Thu Jun 28 14:28:24 2001
+++ linux-2.4.6-aed/fs/ext2/dir.c	Tue Jul 10 22:59:12 2001
@@ -576,5 +576,6 @@
 struct file_operations ext2_dir_operations = {
 	read:		generic_read_dir,
 	readdir:	ext2_readdir,
+	ioctl:		ext2_ioctl,
 	fsync:		ext2_sync_file,
 };
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert