On Wed, May 19, 2021 at 7:07 PM Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> wrote: > On Wed, May 19, 2021 at 08:52:51PM IST, Paul Moore wrote: > > On Wed, May 19, 2021 at 7:37 AM Kumar Kartikeya Dwivedi > > <memxor@xxxxxxxxx> wrote: > > > > > > This is the non-fd installing analogue of anon_inode_getfd_secure. In > > > addition to allowing LSMs to attach policy to the distinct inode, this > > > is also needed for checkpoint restore of an io_uring instance where a > > > mapped region needs to mapped back to the io_uring fd by CRIU. This is > > > currently not possible as all anon_inodes share a single inode. > > > > > > Signed-off-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> > > > --- > > > fs/anon_inodes.c | 9 +++++++++ > > > include/linux/anon_inodes.h | 4 ++++ > > > 2 files changed, 13 insertions(+) > > > > [NOTE: dropping dancol@google as that email is bouncy] > > > > > diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c > > > index a280156138ed..37032786b211 100644 > > > --- a/fs/anon_inodes.c > > > +++ b/fs/anon_inodes.c > > > @@ -148,6 +148,15 @@ struct file *anon_inode_getfile(const char *name, > > > } > > > EXPORT_SYMBOL_GPL(anon_inode_getfile); > > > > This function should have a comment block at the top similar to > > anon_inode_getfile(); in fact you can likely copy-n-paste the bulk of > > it to use as a start. > > > > If you don't want to bother respinning, I've got this exact patch > > (+comments) in my patchset that I'll post later and I'm happy to > > give/share credit if that is important to you. > > > > That'd be great; no credit is fine :). Please CC me when you post it. Will do. I dug out my system which had the patches and I'm working on forward porting them to v5.13-rc2; if I don't have them cleaned up enough for posting by Thursday, I'll make sure they are at least RFC ready by Friday. -- paul moore www.paul-moore.com
