diff options
author | Aristeu Rozanski <aris@redhat.com> | 2012-10-25 20:37:38 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-25 21:37:52 (GMT) |
commit | 5b7aa7d5bb2c5cf7fc05aaa41561af321706ab5f (patch) | |
tree | 404da02312a547f3ff66003fe4002a4b4ff14dcb | |
parent | 8c9506d16925f1b1314d93af383ca3134eb534d8 (diff) | |
download | linux-5b7aa7d5bb2c5cf7fc05aaa41561af321706ab5f.tar.xz |
device_cgroup: rename deny_all to behavior
This was done in a v2 patch but v1 ended up being committed. The
variable name is less confusing and stores the default behavior when no
matching exception exists.
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: James Morris <jmorris@namei.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | security/device_cgroup.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/security/device_cgroup.c b/security/device_cgroup.c index 46d01fc..76503df 100644 --- a/security/device_cgroup.c +++ b/security/device_cgroup.c @@ -42,7 +42,10 @@ struct dev_exception_item { struct dev_cgroup { struct cgroup_subsys_state css; struct list_head exceptions; - bool deny_all; + enum { + DEVCG_DEFAULT_ALLOW, + DEVCG_DEFAULT_DENY, + } behavior; }; static inline struct dev_cgroup *css_to_devcgroup(struct cgroup_subsys_state *s) @@ -182,13 +185,13 @@ static struct cgroup_subsys_state *devcgroup_create(struct cgroup *cgroup) parent_cgroup = cgroup->parent; if (parent_cgroup == NULL) - dev_cgroup->deny_all = false; + dev_cgroup->behavior = DEVCG_DEFAULT_ALLOW; else { parent_dev_cgroup = cgroup_to_devcgroup(parent_cgroup); mutex_lock(&devcgroup_mutex); ret = dev_exceptions_copy(&dev_cgroup->exceptions, &parent_dev_cgroup->exceptions); - dev_cgroup->deny_all = parent_dev_cgroup->deny_all; + dev_cgroup->behavior = parent_dev_cgroup->behavior; mutex_unlock(&devcgroup_mutex); if (ret) { kfree(dev_cgroup); @@ -260,7 +263,7 @@ static int devcgroup_seq_read(struct cgroup *cgroup, struct cftype *cft, * - List the exceptions in case the default policy is to deny * This way, the file remains as a "whitelist of devices" */ - if (devcgroup->deny_all == false) { + if (devcgroup->behavior == DEVCG_DEFAULT_ALLOW) { set_access(acc, ACC_MASK); set_majmin(maj, ~0); set_majmin(min, ~0); @@ -314,12 +317,12 @@ 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 - * (!deny_all, !match) + * (behavior == DEVCG_DEFAULT_ALLOW, !match) * - the dev cgroup has its default policy to deny + exception list: * the new exception *should* match the exceptions - * (deny_all, match) + * (behavior == DEVCG_DEFAULT_DENY, match) */ - if (dev_cgroup->deny_all == match) + if ((dev_cgroup->behavior == DEVCG_DEFAULT_DENY) == match) return 1; return 0; } @@ -375,11 +378,11 @@ static int devcgroup_update_access(struct dev_cgroup *devcgroup, if (!parent_has_perm(devcgroup, &ex)) return -EPERM; dev_exception_clean(devcgroup); - devcgroup->deny_all = false; + devcgroup->behavior = DEVCG_DEFAULT_ALLOW; break; case DEVCG_DENY: dev_exception_clean(devcgroup); - devcgroup->deny_all = true; + devcgroup->behavior = DEVCG_DEFAULT_DENY; break; default: return -EINVAL; @@ -452,7 +455,7 @@ static int devcgroup_update_access(struct dev_cgroup *devcgroup, * an matching exception instead. And be silent about it: we * don't want to break compatibility */ - if (devcgroup->deny_all == false) { + if (devcgroup->behavior == DEVCG_DEFAULT_ALLOW) { dev_exception_rm(devcgroup, &ex); return 0; } @@ -463,7 +466,7 @@ static int devcgroup_update_access(struct dev_cgroup *devcgroup, * an matching exception instead. And be silent about it: we * don't want to break compatibility */ - if (devcgroup->deny_all == true) { + if (devcgroup->behavior == DEVCG_DEFAULT_DENY) { dev_exception_rm(devcgroup, &ex); return 0; } |