This patch is in preparation for hierarchy support
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Signed-off-by: Aristeu Rozanski <aris@xxxxxxxxxx>
---
security/device_cgroup.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
--- github.orig/security/device_cgroup.c 2013-01-29 11:49:16.076677425 -0500
+++ github/security/device_cgroup.c 2013-01-29 11:49:16.374681863 -0500
@@ -89,20 +89,30 @@ static int devcgroup_can_attach(struct c
return 0;
}
+static int dev_exception_copy(struct list_head *dest,
+ struct dev_exception_item *ex)
+{
+ struct dev_exception_item *new;
+
+ new = kmemdup(ex, sizeof(*ex), GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+ list_add_tail(&new->list, dest);
+ return 0;
+}
+
/*
* called under devcgroup_mutex
*/
static int dev_exceptions_copy(struct list_head *dest, struct list_head *orig)
{
- struct dev_exception_item *ex, *tmp, *new;
+ struct dev_exception_item *ex, *tmp;
lockdep_assert_held(&devcgroup_mutex);
list_for_each_entry(ex, orig, list) {
- new = kmemdup(ex, sizeof(*ex), GFP_KERNEL);
- if (!new)
+ if (dev_exception_copy(dest, ex))
goto free_and_exit;
- list_add_tail(&new->list, dest);
}
return 0;
--
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