On Sat, Apr 17, 2021 at 04:48:53PM +, Al Viro wrote:
> On Sat, Apr 17, 2021 at 07:36:39AM -0700, Alexei Starovoitov wrote:
>
> > The kernel will perform the same work with FDs. The same locks are held
> > and the same execution conditions are in both cases. The LSM hooks,
> > fsnotify, etc wil
On Sat, Apr 17, 2021 at 07:36:39AM -0700, Alexei Starovoitov wrote:
> The kernel will perform the same work with FDs. The same locks are held
> and the same execution conditions are in both cases. The LSM hooks,
> fsnotify, etc will be called the same way.
> It's no different if new syscall was in
On Fri, Apr 16, 2021 at 10:01:43PM -0700, Alexei Starovoitov wrote:
> On Fri, Apr 16, 2021 at 9:04 PM Al Viro wrote:
> >
> > On Fri, Apr 16, 2021 at 08:46:05PM -0700, Alexei Starovoitov wrote:
> > > On Fri, Apr 16, 2021 at 8:42 PM Al Viro wrote:
> > > >
> > > > On Fri, Apr 16, 2021 at 08:32:20PM
On Fri, Apr 16, 2021 at 9:04 PM Al Viro wrote:
>
> On Fri, Apr 16, 2021 at 08:46:05PM -0700, Alexei Starovoitov wrote:
> > On Fri, Apr 16, 2021 at 8:42 PM Al Viro wrote:
> > >
> > > On Fri, Apr 16, 2021 at 08:32:20PM -0700, Alexei Starovoitov wrote:
> > > > From: Alexei Starovoitov
> > > >
> > >
On Fri, Apr 16, 2021 at 08:46:05PM -0700, Alexei Starovoitov wrote:
> On Fri, Apr 16, 2021 at 8:42 PM Al Viro wrote:
> >
> > On Fri, Apr 16, 2021 at 08:32:20PM -0700, Alexei Starovoitov wrote:
> > > From: Alexei Starovoitov
> > >
> > > Add bpf_sys_close() helper to be used by the syscall/loader p
On Fri, Apr 16, 2021 at 8:42 PM Al Viro wrote:
>
> On Fri, Apr 16, 2021 at 08:32:20PM -0700, Alexei Starovoitov wrote:
> > From: Alexei Starovoitov
> >
> > Add bpf_sys_close() helper to be used by the syscall/loader program to close
> > intermediate FDs and other cleanup.
>
> Conditional NAK. In
On Fri, Apr 16, 2021 at 08:32:20PM -0700, Alexei Starovoitov wrote:
> From: Alexei Starovoitov
>
> Add bpf_sys_close() helper to be used by the syscall/loader program to close
> intermediate FDs and other cleanup.
Conditional NAK. In a lot of contexts close_fd() is very much unsafe.
In particul
From: Alexei Starovoitov
Add bpf_sys_close() helper to be used by the syscall/loader program to close
intermediate FDs and other cleanup.
Signed-off-by: Alexei Starovoitov
---
include/uapi/linux/bpf.h | 7 +++
kernel/bpf/syscall.c | 14 ++
tools/include/uapi/li
