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069fb0b637
When building without CONFIG_PRINTK, we need to provide a stub check_syslog_permissions. As there is no way to turn on the dmesg_restrict sysctl without CONFIG_PRINTK, return success. Reported-by: Jim Davis <jim.epost@gmail.com> Signed-off-by: Sebastian Schmidt <yath@yath.de> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/* Syslog internals
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*
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* Copyright 2010 Canonical, Ltd.
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* Author: Kees Cook <kees.cook@canonical.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _LINUX_SYSLOG_H
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#define _LINUX_SYSLOG_H
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/* Close the log. Currently a NOP. */
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#define SYSLOG_ACTION_CLOSE 0
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/* Open the log. Currently a NOP. */
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#define SYSLOG_ACTION_OPEN 1
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/* Read from the log. */
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#define SYSLOG_ACTION_READ 2
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/* Read all messages remaining in the ring buffer. */
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#define SYSLOG_ACTION_READ_ALL 3
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/* Read and clear all messages remaining in the ring buffer */
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#define SYSLOG_ACTION_READ_CLEAR 4
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/* Clear ring buffer. */
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#define SYSLOG_ACTION_CLEAR 5
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/* Disable printk's to console */
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#define SYSLOG_ACTION_CONSOLE_OFF 6
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/* Enable printk's to console */
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#define SYSLOG_ACTION_CONSOLE_ON 7
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/* Set level of messages printed to console */
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#define SYSLOG_ACTION_CONSOLE_LEVEL 8
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/* Return number of unread characters in the log buffer */
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#define SYSLOG_ACTION_SIZE_UNREAD 9
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/* Return size of the log buffer */
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#define SYSLOG_ACTION_SIZE_BUFFER 10
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#define SYSLOG_FROM_READER 0
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#define SYSLOG_FROM_PROC 1
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int do_syslog(int type, char __user *buf, int count, bool from_file);
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#ifdef CONFIG_PRINTK
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int check_syslog_permissions(int type, bool from_file);
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#else
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static inline int check_syslog_permissions(int type, bool from_file)
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{
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return 0;
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}
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#endif
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#endif /* _LINUX_SYSLOG_H */
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