On 04/10/2014 07:45 AM, Colin Walters wrote: > On Thu, Mar 20, 2014 at 11:32 AM, tytso@xxxxxxx wrote: >> >> Looking at your patches, and what files you are modifying, you are >> enforcing this in the low-level file system. > > I would love for this to be implemented in the filesystem level as > well. Something like the ext4 immutable bit, but with the ability to > still make hardlinks would be *very* useful for OSTree. And anyone else > that uses hardlinks as a data source. The vserver people do something > similiar: > http://linux-vserver.org/util-vserver:Vhashify > > At the moment I have a read-only bind mount over /usr, but what I really > want is to make the individual objects in the object store in > /ostree/repo/objects be immutable, so even if a user or app navigates > out to /sysroot they still can't mutate them (or the link targets in the > visible /usr). COW links can do this already, I think. Of course, you'll have to use a filesystem that supports them. --Andy -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>