Cross Reference: /drivers/tty/tty

Lines Matching refs:buf
28 	struct tty_audit_buf *buf;
30 	buf = kmalloc(sizeof(*buf), GFP_KERNEL);
31 	if (!buf)
33 	buf->data = kmalloc(N_TTY_BUF_SIZE, GFP_KERNEL);
34 	if (!buf->data)
36 	atomic_set(&buf->count, 1);
37 	mutex_init(&buf->mutex);
38 	buf->major = major;
39 	buf->minor = minor;
40 	buf->icanon = icanon;
41 	buf->valid = 0;
42 	return buf;
45 	kfree(buf);
50 static void tty_audit_buf_free(struct tty_audit_buf *buf)
52 	WARN_ON(buf->valid != 0);
53 	kfree(buf->data);
54 	kfree(buf);
57 static void tty_audit_buf_put(struct tty_audit_buf *buf)
59 	if (atomic_dec_and_test(&buf->count))
60 		tty_audit_buf_free(buf);
89  *	Generate an audit message from the contents of @buf, which is owned by
90  *	@tsk with @loginuid.  @buf->mutex must be locked.
94 			       struct tty_audit_buf *buf)
96 	if (buf->valid == 0)
99 		buf->valid = 0;
102 	tty_audit_log("tty", tsk, loginuid, sessionid, buf->major, buf->minor,
103 		      buf->data, buf->valid);
104 	buf->valid = 0;
110  *	Generate an audit message from the contents of @buf, which is owned by
111  *	the current task.  @buf->mutex must be locked.
113 static void tty_audit_buf_push_current(struct tty_audit_buf *buf)
117 	tty_audit_buf_push(current, auid, sessionid, buf);
128 	struct tty_audit_buf *buf;
131 	buf = current->signal->tty_audit_buf;
134 	if (!buf)
137 	mutex_lock(&buf->mutex);
138 	tty_audit_buf_push_current(buf);
139 	mutex_unlock(&buf->mutex);
141 	tty_audit_buf_put(buf);
161 	struct tty_audit_buf *buf;
166 	buf = current->signal->tty_audit_buf;
167 	if (buf)
168 		atomic_inc(&buf->count);
173 	if (buf) {
174 		mutex_lock(&buf->mutex);
175 		if (buf->major == major && buf->minor == minor)
176 			tty_audit_buf_push_current(buf);
177 		mutex_unlock(&buf->mutex);
178 		tty_audit_buf_put(buf);
204 	struct tty_audit_buf *buf = ERR_PTR(-EPERM);
211 		buf = tsk->signal->tty_audit_buf;
212 		if (buf)
213 			atomic_inc(&buf->count);
221 	if (!buf || IS_ERR(buf))
222 		return PTR_ERR(buf);
224 	mutex_lock(&buf->mutex);
225 	tty_audit_buf_push(tsk, loginuid, sessionid, buf);
226 	mutex_unlock(&buf->mutex);
228 	tty_audit_buf_put(buf);
241 	struct tty_audit_buf *buf, *buf2;
243 	buf = NULL;
248 	buf = current->signal->tty_audit_buf;
249 	if (buf) {
250 		atomic_inc(&buf->count);
266 	buf = current->signal->tty_audit_buf;
267 	if (!buf) {
269 		buf = buf2;
272 	atomic_inc(&buf->count);
278 	return buf;
289 	struct tty_audit_buf *buf;
299 	buf = tty_audit_buf_get(tty);
300 	if (!buf)
303 	mutex_lock(&buf->mutex);
306 	if (buf->major != major || buf->minor != minor
307 	    || buf->icanon != tty->icanon) {
308 		tty_audit_buf_push_current(buf);
309 		buf->major = major;
310 		buf->minor = minor;
311 		buf->icanon = tty->icanon;
316 		run = N_TTY_BUF_SIZE - buf->valid;
319 		memcpy(buf->data + buf->valid, data, run);
320 		buf->valid += run;
323 		if (buf->valid == N_TTY_BUF_SIZE)
324 			tty_audit_buf_push_current(buf);
326 	mutex_unlock(&buf->mutex);
327 	tty_audit_buf_put(buf);
337 	struct tty_audit_buf *buf;
344 	buf = current->signal->tty_audit_buf;
345 	if (buf)
346 		atomic_inc(&buf->count);
349 	if (buf) {
354 		mutex_lock(&buf->mutex);
355 		if (buf->major == major && buf->minor == minor)
356 			tty_audit_buf_push_current(buf);
357 		mutex_unlock(&buf->mutex);
358 		tty_audit_buf_put(buf);