Messages in this thread | | | Date | Fri, 3 Sep 2004 14:43:05 +0200 | From | Andrea Arcangeli <> | Subject | Re: Getting full path from dentry in LSM hooks |
| |
On Fri, Sep 03, 2004 at 02:12:21PM +0200, Kristian Sørensen wrote: > Hi! > > I have a short question, concerning how to get the full path of a file > from a LSM hook. > > - If the "file" of the dentry is located in the root filesystem: no > problem - simply traverse the dentrys, to generate the path. > > - If the "file" is mounted from another partition, you do not get the > full path by traversing the dentrys. > > Example: > If we have a system with a normal root (/) and a seperate boot partition > (mounted on /boot :). In the LSM hook inode_permission, you get the > arguments (struct inode *inode, int mask, struct nameidata *nd). > Finding the path, we traverse the dentrys from (nd->dentry). But if the > inode is a file in /boot we only get the filename (e.g. kernel-2.6.8.1 > instead of /boot/kernel-2.6.8.1) > > > Can some one reveal the trick to get the full path nomater if the > filesystem is root or mounted elsewhere in the filesystem?
fix d_path, I need that too ;) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |