seccomp: rename "usage" to "refs" and document

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Naming the lifetime counter of a seccomp filter "usage" suggests a
little too strongly that its about tasks that are using this filter
while it also tracks other references such as the user notifier or
ptrace. This also updates the documentation to note this fact.

We'll be introducing an actual usage counter in a follow-up patch.

Cc: Tycho Andersen <tycho@tycho.ws>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matt Denton <mpdenton@google.com>
Cc: Sargun Dhillon <sargun@sargun.me>
Cc: Jann Horn <jannh@google.com>
Cc: Chris Palmer <palmer@google.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Robert Sesek <rsesek@google.com>
Cc: Jeffrey Vander Stoep <jeffv@google.com>
Cc: Linux Containers <containers@lists.linux-foundation.org>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20200531115031.391515-1-christian.brauner@ubuntu.com
Signed-off-by: Kees Cook <keescook@chromium.org>

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This commit is contained in:

Christian Brauner 2020-05-31 13:50:28 +02:00 • committed by Kees Cook

parent 9f87dcf14b

commit b707ddee11

1 changed files with 10 additions and 9 deletions

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kernel/seccomp.c

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