Re: inode allocation

On Oct 27, 2003  19:43 +0000, Drew P. Vogel wrote:
> Currently inodes are allocated in a way that a file created will be
> assigned the inode of the last file removed, assuming no other files have
> been created since the file was removed.
> 
> In shell scrict terms, after running this:
> 
> touch file
> a=`stat -c %i file`
> rm file
> touch file
> b=`stat -c %i file`
> 
> $a eq $b. This makes it difficult to determine if those two files are
> different.

Doing "cp /etc/hosts file" also makes them different but keeps the same
name and inode number.  What exactly are you trying to achieve?  In the
rm/create case, the inode generation will be different, but that isn't
exported via fstat - you need to do ioctl(fd, EXT2_IOC_GETVERSION, &version)
to know that, and it still doesn't help you if the file was modified but
not unlinked.

Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/



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