summaryrefslogtreecommitdiff
path: root/include/linux/syslog.h
diff options
context:
space:
mode:
authorSebastian Schmidt <yath@yath.de>2014-10-19 22:05:15 +0400
committerTony Luck <tony.luck@intel.com>2014-11-05 20:59:48 +0300
commit68c4a4f8abc60c9440ede9cd123d48b78325f7a3 (patch)
treeef8aefb7d8c3769204116ff65cfa48551464a275 /include/linux/syslog.h
parenta28726b4fb624f81d637a8afb9ea12fc16500f61 (diff)
downloadlinux-68c4a4f8abc60c9440ede9cd123d48b78325f7a3.tar.xz
pstore: Honor dmesg_restrict sysctl on dmesg dumps
When the kernel.dmesg_restrict restriction is in place, only users with CAP_SYSLOG should be able to access crash dumps (like: attacker is trying to exploit a bug, watchdog reboots, attacker can happily read crash dumps and logs). This puts the restriction on console-* types as well as sensitive information could have been leaked there. Other log types are unaffected. Signed-off-by: Sebastian Schmidt <yath@yath.de> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/linux/syslog.h')
-rw-r--r--include/linux/syslog.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/syslog.h b/include/linux/syslog.h
index 98a3153c0f96..9def5297dbb7 100644
--- a/include/linux/syslog.h
+++ b/include/linux/syslog.h
@@ -48,5 +48,6 @@
#define SYSLOG_FROM_PROC 1
int do_syslog(int type, char __user *buf, int count, bool from_file);
+int check_syslog_permissions(int type, bool from_file);
#endif /* _LINUX_SYSLOG_H */