include/linux/device_cgroup.h

   1 #include <linux/fs.h>
   2
   3 #ifdef CONFIG_CGROUP_DEVICE
   4 extern int __devcgroup_inode_permission(struct inode *inode, int mask);
   5 extern int devcgroup_inode_mknod(int mode, dev_t dev);
   6 static inline int devcgroup_inode_permission(struct inode *inode, int mask)
   7 {
   8         if (likely(!inode->i_rdev))
   9                 return 0;
  10         if (!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode))
  11                 return 0;
  12         return __devcgroup_inode_permission(inode, mask);
  13 }
  14 #else
  15 static inline int devcgroup_inode_permission(struct inode *inode, int mask)
  16 { return 0; }
  17 static inline int devcgroup_inode_mknod(int mode, dev_t dev)
  18 { return 0; }
  19 #endif