1#include <linux/fs.h> 2 3#ifdef CONFIG_CGROUP_DEVICE 4extern int __devcgroup_inode_permission(struct inode *inode, int mask); 5extern int devcgroup_inode_mknod(int mode, dev_t dev); 6static 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 15static inline int devcgroup_inode_permission(struct inode *inode, int mask) 16{ return 0; } 17static inline int devcgroup_inode_mknod(int mode, dev_t dev) 18{ return 0; } 19#endif 20