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| author | John Johansen <john.johansen@canonical.com> | 2017-01-16 09:42:26 +0100 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2017-01-16 10:18:23 +0100 |
| commit | 57e36bbd67bd1509f550311b162be78cadfe887b (patch) | |
| tree | 6aa7348311891865a045cd46f9846e74dab88dbf /security | |
| parent | apparmor: allow ns visibility question to consider subnses (diff) | |
| download | linux-57e36bbd67bd1509f550311b162be78cadfe887b.tar.xz linux-57e36bbd67bd1509f550311b162be78cadfe887b.zip | |
apparmor: add macro for bug asserts to check that a lock is held
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/include/lib.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/security/apparmor/include/lib.h b/security/apparmor/include/lib.h index 4699c2b43fa0..61dedd7333df 100644 --- a/security/apparmor/include/lib.h +++ b/security/apparmor/include/lib.h @@ -19,6 +19,17 @@ #include "match.h" +/* Provide our own test for whether a write lock is held for asserts + * this is because on none SMP systems write_can_lock will always + * resolve to true, which is what you want for code making decisions + * based on it, but wrong for asserts checking that the lock is held + */ +#ifdef CONFIG_SMP +#define write_is_locked(X) !write_can_lock(X) +#else +#define write_is_locked(X) (1) +#endif /* CONFIG_SMP */ + /* * DEBUG remains global (no per profile flag) since it is mostly used in sysctl * which is not related to profile accesses. |