1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* Syslog internals 3 * 4 * Copyright 2010 Canonical, Ltd. 5 * Author: Kees Cook <kees.cook@canonical.com> 6 */ 7 8 #ifndef _LINUX_SYSLOG_H 9 #define _LINUX_SYSLOG_H 10 11 #include <linux/wait.h> 12 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 35 36 #define SYSLOG_FROM_READER 0 37 #define SYSLOG_FROM_PROC 1 38 39 int do_syslog(int type, char __user *buf, int count, int source); 40 extern wait_queue_head_t log_wait; 41 42 #endif /* _LINUX_SYSLOG_H */ 43