17 enum {
30 	char name[32];  member
33 enum { EMFL_VALID = 1 };
67 	.name = "aoe",
84 		return -EINVAL;  in interfaces()
99 		return -EINVAL;  in revalidate()
100 	buf[sizeof buf - 1] = '\0';  in revalidate()
102 		return -EFAULT;  in revalidate()
107 		return -EINVAL;  in revalidate()
111 		return -EINVAL;  in revalidate()
112 	spin_lock_irqsave(&d->lock, flags);  in revalidate()
117 	spin_unlock_irqrestore(&d->lock, flags);  in revalidate()
122 		spin_lock_irqsave(&d->lock, flags);  in revalidate()
147 	if ((em->flags & EMFL_VALID)) {  in aoechr_error()
156 	em->msg = mp;  in aoechr_error()
157 	em->flags |= EMFL_VALID;  in aoechr_error()
158 	em->len = n;  in aoechr_error()
170 aoechr_write(struct file *filp, const char __user *buf, size_t cnt, loff_t *offp)  in aoechr_write()  argument
172 	int ret = -EINVAL;  in aoechr_write()
174 	switch ((unsigned long) filp->private_data) {  in aoechr_write()
182 		ret = interfaces(buf, cnt);  in aoechr_write()
185 		ret = revalidate(buf, cnt);  in aoechr_write()
188 		ret = aoedev_flush(buf, cnt);  in aoechr_write()
192 		ret = cnt;  in aoechr_write()
203 	filp->private_data = (void *) (unsigned long) n;  in aoechr_open()
211 	return -EINVAL;  in aoechr_open()
221 aoechr_read(struct file *filp, char __user *buf, size_t cnt, loff_t *off)  in aoechr_read()  argument
229 	n = (unsigned long) filp->private_data;  in aoechr_read()
231 		return -EFAULT;  in aoechr_read()
237 		if ((em->flags & EMFL_VALID) != 0)  in aoechr_read()
239 		if (filp->f_flags & O_NDELAY) {  in aoechr_read()
241 			return -EAGAIN;  in aoechr_read()
251 		nblocked_emsgs_readers--;  in aoechr_read()
255 			return -ERESTARTSYS;  in aoechr_read()
258 	if (em->len > cnt) {  in aoechr_read()
260 		return -EAGAIN;  in aoechr_read()
262 	mp = em->msg;  in aoechr_read()
263 	len = em->len;  in aoechr_read()
264 	em->msg = NULL;  in aoechr_read()
265 	em->flags &= ~EMFL_VALID;  in aoechr_read()
274 	return n == 0 ? len : -EFAULT;  in aoechr_read()
307 			      chardevs[i].name);  in aoechr_init()