1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/fs.h> 3 4 #ifdef CONFIG_CGROUP_DEVICE 5 extern int __devcgroup_inode_permission(struct inode *inode, int mask); 6 extern int devcgroup_inode_mknod(int mode, dev_t dev); 7 static inline int devcgroup_inode_permission(struct inode *inode, int mask) 8 { 9 if (likely(!inode->i_rdev)) 10 return 0; 11 if (!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode)) 12 return 0; 13 return __devcgroup_inode_permission(inode, mask); 14 } 15 #else 16 static inline int devcgroup_inode_permission(struct inode *inode, int mask) 17 { return 0; } 18 static inline int devcgroup_inode_mknod(int mode, dev_t dev) 19 { return 0; } 20 #endif 21