In order to make the next patch more clear, expand may_access() logic. v2: may_access() returns bool now Acked-by: Tejun Heo Cc: Tejun Heo Cc: Serge Hallyn Signed-off-by: Aristeu Rozanski --- security/device_cgroup.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) --- github.orig/security/device_cgroup.c 2013-01-30 08:56:29.532063723 -0500 +++ github/security/device_cgroup.c 2013-01-30 08:58:02.934460404 -0500 @@ -355,8 +355,8 @@ return 0; * @dev_cgroup: dev cgroup to be tested against * @refex: new exception */ -static int may_access(struct dev_cgroup *dev_cgroup, - struct dev_exception_item *refex) +static bool may_access(struct dev_cgroup *dev_cgroup, + struct dev_exception_item *refex) { struct dev_exception_item *ex; bool match = false; @@ -382,16 +382,19 @@ if (ex->minor != ~0 && ex->minor != re /* * In two cases we'll consider this new exception valid: - * - the dev cgroup has its default policy to allow + exception list: - * the new exception should *not* match any of the exceptions - * (behavior == DEVCG_DEFAULT_ALLOW, !match) * - the dev cgroup has its default policy to deny + exception list: * the new exception *should* match the exceptions - * (behavior == DEVCG_DEFAULT_DENY, match) + * - the dev cgroup has its default policy to allow + exception list: + * the new exception should *not* match any of the exceptions */ - if ((dev_cgroup->behavior == DEVCG_DEFAULT_DENY) == match) - return 1; - return 0; + if (dev_cgroup->behavior == DEVCG_DEFAULT_DENY) { + if (match) + return true; + } else { + if (!match) + return true; + } + return false; } /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/