1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Copyright 2010 Canonical, Ltd.
5 * Author: Kees Cook <kees.cook@canonical.com>
8 #ifndef _LINUX_SYSLOG_H
9 #define _LINUX_SYSLOG_H
11 #include <linux/wait.h>
13 /* Close the log. Currently a NOP. */
14 #define SYSLOG_ACTION_CLOSE 0
15 /* Open the log. Currently a NOP. */
16 #define SYSLOG_ACTION_OPEN 1
17 /* Read from the log. */
18 #define SYSLOG_ACTION_READ 2
19 /* Read all messages remaining in the ring buffer. */
20 #define SYSLOG_ACTION_READ_ALL 3
21 /* Read and clear all messages remaining in the ring buffer */
22 #define SYSLOG_ACTION_READ_CLEAR 4
23 /* Clear ring buffer. */
24 #define SYSLOG_ACTION_CLEAR 5
25 /* Disable printk's to console */
26 #define SYSLOG_ACTION_CONSOLE_OFF 6
27 /* Enable printk's to console */
28 #define SYSLOG_ACTION_CONSOLE_ON 7
29 /* Set level of messages printed to console */
30 #define SYSLOG_ACTION_CONSOLE_LEVEL 8
31 /* Return number of unread characters in the log buffer */
32 #define SYSLOG_ACTION_SIZE_UNREAD 9
33 /* Return size of the log buffer */
34 #define SYSLOG_ACTION_SIZE_BUFFER 10
36 #define SYSLOG_FROM_READER 0
37 #define SYSLOG_FROM_PROC 1
39 int do_syslog(int type, char __user *buf, int count, int source);
40 extern wait_queue_head_t log_wait;
42 #endif /* _LINUX_SYSLOG_H */