I don't think turning the write option off during write is a good idea. All file systems running reiserfs should make the file write-once. File systems that do need to be rewriteable will use ext3 or something else (that's how we do it now anyway).
Could it done in such a way that even root can't write (not even when using block devices)? -----Original Message----- From: Oleg Drokin [mailto:[EMAIL PROTECTED] Sent: Friday, June 27, 2003 9:20 AM To: Fong Vang Cc: 'Hans Reiser'; '[EMAIL PROTECTED]' Subject: Re: Write-once file system Hello! On Fri, Jun 27, 2003 at 09:07:05AM -0700, Fong Vang wrote: > Once the write to the file is CLOSED the file should not be modifiable in > any way. It should not be writeable by root. Ideally, this should be > across reboot and across kernel. The current requirement is that as long as > the modified kernel/reisefs is being used then it should NOT be modifiable > (if a kernel allowing modification is used then it could allow > modifications). So basically do you think it would be better for you to have "write-once flag" in superblock that will make all files to be unwritable (except newly created ones) as opposed to a simple mount option that you'd use for filesystems with non-changeable files? (you need to mark filesystems that are in write-once mode somehow, because I think you do not need all reiserfs filesystems to be run in this mode, right?) Also concerning the "root should not be able to change the files", root will be able to overwrite files by using block devices if he'd want to. Bye, Oleg This e-mail has been captured and archived by the ZANTAZ Digital Safe(tm) service. For more information, visit us at www.zantaz.com. IMPORTANT: This electronic mail message is intended only for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, or the employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone or directly reply to the original message(s) sent. Thank you.
