extern const struct file_operations sysfs_dir_operations;
extern const struct file_operations sysfs_file_operations;
extern const struct file_operations bin_fops;
-extern struct inode_operations sysfs_dir_inode_operations;
-extern struct inode_operations sysfs_symlink_inode_operations;
+extern const struct inode_operations sysfs_dir_inode_operations;
+extern const struct inode_operations sysfs_symlink_inode_operations;
struct sysfs_symlink {
char * link_name;