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| author | Aristeu Rozanski <aris@redhat.com> | 2013-02-15 11:55:44 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-03-20 07:50:09 -0700 |
| commit | 26898fdff371d78f122cf15d8732d1d37f2d1338 (patch) | |
| tree | e6da9b9fe1f6d957f0aae86288525ecb8afb4e08 /security/device_cgroup.c | |
| parent | 3ac1707a13a3da9cfc8f242a15b2fae6df2c5f88 (diff) | |
| download | linux-stable-26898fdff371d78f122cf15d8732d1d37f2d1338.tar.gz linux-stable-26898fdff371d78f122cf15d8732d1d37f2d1338.tar.bz2 linux-stable-26898fdff371d78f122cf15d8732d1d37f2d1338.zip | |
devcg: expand may_access() logic
In order to make the next patch more clear, expand may_access() logic.
v2: may_access() returns bool now
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'security/device_cgroup.c')
| -rw-r--r-- | security/device_cgroup.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/security/device_cgroup.c b/security/device_cgroup.c index 1c69e38e3a2c..4ad55a9c6920 100644 --- a/security/device_cgroup.c +++ b/security/device_cgroup.c @@ -305,8 +305,8 @@ static int devcgroup_seq_read(struct cgroup *cgroup, struct cftype *cft, * @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; @@ -332,16 +332,19 @@ static int may_access(struct dev_cgroup *dev_cgroup, /* * 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; } /* |