seccomp: audit abnormal end to a process due to seccomp

The audit system likes to collect information about processes that end
abnormally (SIGSEGV) as this may me useful intrusion detection information.
This patch adds audit support to collect information when seccomp forces a
task to exit because of misbehavior in a similar way.

Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/audit.h b/include/linux/audit.h
index 426ab9f4dd85..6e1c533f9b46 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -430,6 +430,7 @@ extern void audit_putname(const char *name);
 extern void __audit_inode(const char *name, const struct dentry *dentry);
 extern void __audit_inode_child(const struct dentry *dentry,
                                 const struct inode *parent);
+extern void __audit_seccomp(unsigned long syscall);
 extern void __audit_ptrace(struct task_struct *t);
 
 static inline int audit_dummy_context(void)
@@ -453,6 +454,12 @@ static inline void audit_inode_child(const struct dentry *dentry,
 }
 void audit_core_dumps(long signr);
 
+static inline void audit_seccomp(unsigned long syscall)
+{
+        if (unlikely(!audit_dummy_context()))
+                __audit_seccomp(syscall);
+}
+
 static inline void audit_ptrace(struct task_struct *t)
 {
         if (unlikely(!audit_dummy_context()))
@@ -558,6 +565,7 @@ extern int audit_signals;
 #define audit_inode(n,d) do { (void)(d); } while (0)
 #define audit_inode_child(i,p) do { ; } while (0)
 #define audit_core_dumps(i) do { ; } while (0)
+#define audit_seccomp(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) (0)
 #define audit_get_loginuid(t) (-1)
 #define audit_get_sessionid(t) (-1)