Messages in this thread | | | From | Sargun Dhillon <> | Date | Wed, 3 Jun 2020 16:56:59 -0700 | Subject | Re: [PATCH v3 0/4] Add seccomp notifier ioctl that enables adding fds |
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On Wed, Jun 3, 2020 at 4:42 PM Kees Cook <keescook@chromium.org> wrote: > > On Tue, Jun 02, 2020 at 06:10:40PM -0700, Sargun Dhillon wrote: > > Sargun Dhillon (4): > > fs, net: Standardize on file_receive helper to move fds across > > processes > > pid: Use file_receive helper to copy FDs > > The fixes (that should add open-coded cgroups stuff) should be separate > patches so they can be backported. Patch 1/4, and 2/4 are separated so they can be backported. Patch 1 should go into long term, and patch 2 should land in stable.
Do you see anything in 1/4, and 2/4 that shouldn't be there?
> > The helper doesn't take the __user pointer I thought we'd agreed it > should to avoid changing any SCM_RIGHTS behaviors? > It doesn't change the SCM_RIGHTS behaviour because it continues to have the logic which allocates the file descriptor outside of the helper. 1. Allocate FD (this happens in scm.c) 2. Copy FD # to userspace (this happens in scm.c) 3. Receive FD (this happens in the new helper)
> > seccomp: Introduce addfd ioctl to seccomp user notifier > > selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD > > Otherwise, yeah, this should be good. > > -- > Kees Cook
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