Lines Matching refs:buf

27 	struct tty_audit_buf *buf;  in tty_audit_buf_ref()  local
29 	buf = current->signal->tty_audit_buf;  in tty_audit_buf_ref()
30 	WARN_ON(buf == ERR_PTR(-ESRCH));  in tty_audit_buf_ref()
31 	return buf;  in tty_audit_buf_ref()
36 	struct tty_audit_buf *buf;  in tty_audit_buf_alloc()  local
38 	buf = kzalloc(sizeof(*buf), GFP_KERNEL);  in tty_audit_buf_alloc()
39 	if (!buf)  in tty_audit_buf_alloc()
42 	buf->data = kmalloc(TTY_AUDIT_BUF_SIZE, GFP_KERNEL);  in tty_audit_buf_alloc()
43 	if (!buf->data)  in tty_audit_buf_alloc()
46 	mutex_init(&buf->mutex);  in tty_audit_buf_alloc()
48 	return buf;  in tty_audit_buf_alloc()
51 	kfree(buf);  in tty_audit_buf_alloc()
56 static void tty_audit_buf_free(struct tty_audit_buf *buf)  in tty_audit_buf_free()  argument
58 	WARN_ON(buf->valid != 0);  in tty_audit_buf_free()
59 	kfree(buf->data);  in tty_audit_buf_free()
60 	kfree(buf);  in tty_audit_buf_free()
93 static void tty_audit_buf_push(struct tty_audit_buf *buf)  in tty_audit_buf_push()  argument
95 	if (buf->valid == 0)  in tty_audit_buf_push()
98 		buf->valid = 0;  in tty_audit_buf_push()
101 	tty_audit_log("tty", buf->dev, buf->data, buf->valid);  in tty_audit_buf_push()
102 	buf->valid = 0;  in tty_audit_buf_push()
116 	struct tty_audit_buf *buf;  in tty_audit_exit()  local
118 	buf = xchg(&current->signal->tty_audit_buf, ERR_PTR(-ESRCH));  in tty_audit_exit()
119 	if (!buf)  in tty_audit_exit()
122 	tty_audit_buf_push(buf);  in tty_audit_exit()
123 	tty_audit_buf_free(buf);  in tty_audit_exit()
158 	struct tty_audit_buf *buf;  in tty_audit_push()  local
163 	buf = tty_audit_buf_ref();  in tty_audit_push()
164 	if (!IS_ERR_OR_NULL(buf)) {  in tty_audit_push()
165 		mutex_lock(&buf->mutex);  in tty_audit_push()
166 		tty_audit_buf_push(buf);  in tty_audit_push()
167 		mutex_unlock(&buf->mutex);  in tty_audit_push()
181 	struct tty_audit_buf *buf;  in tty_audit_buf_get()  local
183 	buf = tty_audit_buf_ref();  in tty_audit_buf_get()
184 	if (buf)  in tty_audit_buf_get()
185 		return buf;  in tty_audit_buf_get()
187 	buf = tty_audit_buf_alloc();  in tty_audit_buf_get()
188 	if (buf == NULL) {  in tty_audit_buf_get()
194 	if (cmpxchg(&current->signal->tty_audit_buf, NULL, buf) != NULL)  in tty_audit_buf_get()
195 		tty_audit_buf_free(buf);  in tty_audit_buf_get()
207 	struct tty_audit_buf *buf;  in tty_audit_add_data()  local
226 	buf = tty_audit_buf_get();  in tty_audit_add_data()
227 	if (IS_ERR_OR_NULL(buf))  in tty_audit_add_data()
230 	mutex_lock(&buf->mutex);  in tty_audit_add_data()
232 	if (buf->dev != dev || buf->icanon != icanon) {  in tty_audit_add_data()
233 		tty_audit_buf_push(buf);  in tty_audit_add_data()
234 		buf->dev = dev;  in tty_audit_add_data()
235 		buf->icanon = icanon;  in tty_audit_add_data()
240 		run = TTY_AUDIT_BUF_SIZE - buf->valid;  in tty_audit_add_data()
243 		memcpy(buf->data + buf->valid, data, run);  in tty_audit_add_data()
244 		buf->valid += run;  in tty_audit_add_data()
247 		if (buf->valid == TTY_AUDIT_BUF_SIZE)  in tty_audit_add_data()
248 			tty_audit_buf_push(buf);  in tty_audit_add_data()
250 	mutex_unlock(&buf->mutex);  in tty_audit_add_data()