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-rw-r--r--security/device_cgroup.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 44dfc41..46d01fc 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -533,10 +533,10 @@ struct cgroup_subsys devices_subsys = {
*
* returns 0 on success, -EPERM case the operation is not permitted
*/
-static int __devcgroup_check_permission(struct dev_cgroup *dev_cgroup,
- short type, u32 major, u32 minor,
+static int __devcgroup_check_permission(short type, u32 major, u32 minor,
short access)
{
+ struct dev_cgroup *dev_cgroup;
struct dev_exception_item ex;
int rc;
@@ -547,6 +547,7 @@ static int __devcgroup_check_permission(struct dev_cgroup *dev_cgroup,
ex.access = access;
rcu_read_lock();
+ dev_cgroup = task_devcgroup(current);
rc = may_access(dev_cgroup, &ex);
rcu_read_unlock();
@@ -558,7 +559,6 @@ static int __devcgroup_check_permission(struct dev_cgroup *dev_cgroup,
int __devcgroup_inode_permission(struct inode *inode, int mask)
{
- struct dev_cgroup *dev_cgroup = task_devcgroup(current);
short type, access = 0;
if (S_ISBLK(inode->i_mode))
@@ -570,13 +570,12 @@ int __devcgroup_inode_permission(struct inode *inode, int mask)
if (mask & MAY_READ)
access |= ACC_READ;
- return __devcgroup_check_permission(dev_cgroup, type, imajor(inode),
- iminor(inode), access);
+ return __devcgroup_check_permission(type, imajor(inode), iminor(inode),
+ access);
}
int devcgroup_inode_mknod(int mode, dev_t dev)
{
- struct dev_cgroup *dev_cgroup = task_devcgroup(current);
short type;
if (!S_ISBLK(mode) && !S_ISCHR(mode))
@@ -587,7 +586,7 @@ int devcgroup_inode_mknod(int mode, dev_t dev)
else
type = DEV_CHAR;
- return __devcgroup_check_permission(dev_cgroup, type, MAJOR(dev),
- MINOR(dev), ACC_MKNOD);
+ return __devcgroup_check_permission(type, MAJOR(dev), MINOR(dev),
+ ACC_MKNOD);
}