[lkml]   [1998]   [Nov]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: swapfile security weakeness
> > swapon should keep a handle on the inode, which means the file won't
> > be removed from the physical media even if it is unlinked (just like
> > open files aren't.)
> Unfortunately, there are a few issues with that:
> - it doesn't work on inodeless FSes (msdosfs)
> - you can't swapoff() a deleted file, leaving minor
> fs corruption on reboot (and major corruption on
> umsdos and the like)
> - since you can't swapoff() the deleted file, you
> can't reclaim the disk space
> This basically means that we have a real problem at
> hand that should be fixed.

Sure it works on inodeless filesystems -- *ALL* filesystems are
inode-based as far as the Linux kernel are concerned. However, your
objection about swapoff() is well taken -- we need a variant that can
take an index to a swap area rather than a filename.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:45    [W:0.055 / U:0.240 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site