include/linux/syslog.h

   1 /*  Syslog internals
   2  *
   3  *  Copyright 2010 Canonical, Ltd.
   4  *  Author: Kees Cook <kees.cook@canonical.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2, or (at your option)
   9  *  any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; see the file COPYING.  If not, write to
  18  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #ifndef _LINUX_SYSLOG_H
  22 #define _LINUX_SYSLOG_H
  23
  24 /* Close the log.  Currently a NOP. */
  25 #define SYSLOG_ACTION_CLOSE          0
  26 /* Open the log. Currently a NOP. */
  27 #define SYSLOG_ACTION_OPEN           1
  28 /* Read from the log. */
  29 #define SYSLOG_ACTION_READ           2
  30 /* Read all messages remaining in the ring buffer. */
  31 #define SYSLOG_ACTION_READ_ALL       3
  32 /* Read and clear all messages remaining in the ring buffer */
  33 #define SYSLOG_ACTION_READ_CLEAR     4
  34 /* Clear ring buffer. */
  35 #define SYSLOG_ACTION_CLEAR          5
  36 /* Disable printk's to console */
  37 #define SYSLOG_ACTION_CONSOLE_OFF    6
  38 /* Enable printk's to console */
  39 #define SYSLOG_ACTION_CONSOLE_ON     7
  40 /* Set level of messages printed to console */
  41 #define SYSLOG_ACTION_CONSOLE_LEVEL  8
  42 /* Return number of unread characters in the log buffer */
  43 #define SYSLOG_ACTION_SIZE_UNREAD    9
  44 /* Return size of the log buffer */
  45 #define SYSLOG_ACTION_SIZE_BUFFER   10
  46
  47 #define SYSLOG_FROM_READER           0
  48 #define SYSLOG_FROM_PROC             1
  49
  50 int do_syslog(int type, char __user *buf, int count, int source);
  51
  52 #ifdef CONFIG_PRINTK
  53 int check_syslog_permissions(int type, int source);
  54 #else
  55 static inline int check_syslog_permissions(int type, int source)
  56 {
  57         return 0;
  58 }
  59 #endif
  60
  61 #endif /* _LINUX_SYSLOG_H */