exec: Factor unshare_sighand out of de_thread and call it separately

This makes the code clearer and makes it easier to implement a mutex
that is not taken over any locations that may block indefinitely waiting
for userspace.

Signed-off-by: "Eric W. Biederman" <[email protected]>
Reviewed-by: Bernd Edlinger <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Acked-by: Christian Brauner <[email protected]>
Reviewed-by: Kirill Tkhai <[email protected]>
Signed-off-by: Bernd Edlinger <[email protected]>
Signed-off-by: Eric W. Biederman <[email protected]>

0 files changed, 0 insertions, 0 deletions