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authorRichard Guy Briggs <rgb@redhat.com>2016-06-28 12:07:50 -0400
committerPaul Moore <paul@paul-moore.com>2016-06-28 15:48:48 -0400
commit3f5be2da8565c1cce5655bb0948fcc957c6eb6c6 (patch)
tree114b88bf2c039380ce333b5bca2265ebf9c4fa8c /kernel
parent76a658c20efd541a62838d9ff68ce94170d7a549 (diff)
downloadlinux-3f5be2da8565c1cce5655bb0948fcc957c6eb6c6.tar.gz
audit: move audit_get_tty to reduce scope and kabi changes
The only users of audit_get_tty and audit_put_tty are internal to audit, so move it out of include/linux/audit.h to kernel.h and create a proper function rather than inlining it. This also reduces kABI changes. Suggested-by: Paul Moore <pmoore@redhat.com> Signed-off-by: Richard Guy Briggs <rgb@redhat.com> [PM: line wrapped description] Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/audit.c17
-rw-r--r--kernel/audit.h4
-rw-r--r--kernel/auditsc.c1
3 files changed, 21 insertions, 1 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index 384374a1d232..d5971010e44a 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1866,6 +1866,23 @@ out_null:
audit_log_format(ab, " exe=(null)");
}
+struct tty_struct *audit_get_tty(struct task_struct *tsk)
+{
+ struct tty_struct *tty = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&tsk->sighand->siglock, flags);
+ if (tsk->signal)
+ tty = tty_kref_get(tsk->signal->tty);
+ spin_unlock_irqrestore(&tsk->sighand->siglock, flags);
+ return tty;
+}
+
+void audit_put_tty(struct tty_struct *tty)
+{
+ tty_kref_put(tty);
+}
+
void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
{
const struct cred *cred;
diff --git a/kernel/audit.h b/kernel/audit.h
index cbbe6bb6496e..a492f4c4e710 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -23,6 +23,7 @@
#include <linux/audit.h>
#include <linux/skbuff.h>
#include <uapi/linux/mqueue.h>
+#include <linux/tty.h>
/* AUDIT_NAMES is the number of slots we reserve in the audit_context
* for saving names from getname(). If we get more names we will allocate
@@ -262,6 +263,9 @@ extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
extern void audit_log_d_path_exe(struct audit_buffer *ab,
struct mm_struct *mm);
+extern struct tty_struct *audit_get_tty(struct task_struct *tsk);
+extern void audit_put_tty(struct tty_struct *tty);
+
/* audit watch functions */
#ifdef CONFIG_AUDIT_WATCH
extern void audit_put_watch(struct audit_watch *watch);
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 33dafa70229d..60a354eed2fa 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -63,7 +63,6 @@
#include <asm/unistd.h>
#include <linux/security.h>
#include <linux/list.h>
-#include <linux/tty.h>
#include <linux/binfmts.h>
#include <linux/highmem.h>
#include <linux/syscalls.h>