On Thursday 28 October 2004 02:18 am, you wrote: > On Wed, 2004-10-27 at 16:44, Nifty Hat Mitch wrote: > > You might look at the mechanism that SELinux takes advantage of > > extended attributes in the inode for your experiment. > > > > For example ls has the flags -Z and --lcontext. > > $ ls --lcontext / > > total 339 > > drwxr-xr-x 6 system_u:object_r:default_t root root 4096 Apr > > 10 2004 b .... > > > > By taking advandage of existing extended atributes you will not break > > the filesystem structure and the additional data is only > > important when your kernel changes inspect, check, and modify > > your attribute. > > Right, you likely don't need to add a field to the inode structure; you > can already associate arbitrary data with an inode via the existing > extended attribute support without requiring any changes to the kernel, > on-disk format, etc. 'man 5 attr' First I want to thank all of you for your kind responce to my help plea. But inspite of all you say, I still want to add an extra field in the inode structure.Ofcourse I will have a spare machine to try it out. Now following your instructions , what I found out is the ext2_inode structure definition.I was able to add my additional field to it.(Basically a simple integer array,one-dimention with index 30 or 40).I also identified some functions pertaining to inodes that I should change.But what I saw is that all functions use the struct inode *inode definition. But what I have is the ext2_inode definition.Evidently somewhere it must have been casted to inode. Basically what I need to do is to set all fields of my integer array to 0 initially. Can you please point out where I am to do so .Thanks in advance.
