在kernel中对文件进行读写操作是用哪几个函数？

thinworm

谢谢!

yidou

asmlinkage ssize_t sys_read(unsigned int fd, char __user * buf, size_t count)
asmlinkage ssize_t sys_write(unsigned int fd, const char __user * buf, size_t count)
ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
..........