In order to make the next patch more clear, expand may_access() logic.
v2: may_access() returns bool now
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Signed-off-by: Aristeu Rozanski <aris@xxxxxxxxxx>
---
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;
}
/*
--
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