错误： 初始值设定项里有未知的字段‘ioctl’

这个错误网上搜索发现3.0.0.15版本内核 file_operation结构体已经删除了ioctl函数，取代的是：
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);

file_operation结构体在 /usr/src/linux-3.0.0.15/include/linux/fs.h定义。

1546 struct file_operations {  1547         struct module *owner;  1548         loff_t (*llseek) (struct file *, loff_t, int);  1549         ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);  1550         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);  1551         ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);  1552         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);  1553         int (*readdir) (struct file *, void *, filldir_t);  1554         unsigned int (*poll) (struct file *, struct poll_table_struct *);  1555         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);  1556         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);  1557         int (*mmap) (struct file *, struct vm_area_struct *);  1558         int (*open) (struct inode *, struct file *);  1559         int (*flush) (struct file *, fl_owner_t id);  1560         int (*release) (struct inode *, struct file *);  1561         int (*fsync) (struct file *, int datasync);  1562         int (*aio_fsync) (struct kiocb *, int datasync);  1563         int (*fasync) (int, struct file *, int);  1564         int (*lock) (struct file *, int, struct file_lock *);  1565         ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);  1566         unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);  1567         int (*check_flags)(int);  1568         int (*flock) (struct file *, int, struct file_lock *);  1569         ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);  1570         ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);  1571         int (*setlease)(struct file *, long, struct file_lock **);  1572         long (*fallocate)(struct file *file, int mode, loff_t offset,  1573                           loff_t len);  1574 };  

2.6.30.4中file_operation的定义如下：

1484 struct file_operations {  1485         struct module *owner;  1486         loff_t (*llseek) (struct file *, loff_t, int);  1487         ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);  1488         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);  1489         ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);  1490         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);  1491         int (*readdir) (struct file *, void *, filldir_t);  1492         unsigned int (*poll) (struct file *, struct poll_table_struct *);  1493         int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);  1494         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);  1495         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);  1496         int (*mmap) (struct file *, struct vm_area_struct *);  1497         int (*open) (struct inode *, struct file *);  1498         int (*flush) (struct file *, fl_owner_t id);  1499         int (*release) (struct inode *, struct file *);  1500         int (*fsync) (struct file *, struct dentry *, int datasync);  1501         int (*aio_fsync) (struct kiocb *, int datasync);  1502         int (*fasync) (int, struct file *, int);  1503         int (*lock) (struct file *, int, struct file_lock *);  1504         ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);  1505         unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);  1506         int (*check_flags)(int);  1507         int (*flock) (struct file *, int, struct file_lock *);  1508         ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);  1509         ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);  1510         int (*setlease)(struct file *, long, struct file_lock **);  1511 };  

在file_operation 赋值处修改：
.unlocked_ioctl = xxx_ioctl