谢谢!
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)..........
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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)
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