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 20