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>

diff --git a/include/linux/audit.h b/include/linux/audit.h
index 32cdafb312d88a7984eeba69a06db183275ac591..b40ed5df5542f5049a28106353e909304831816f 100644 (file)
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -26,7 +26,6 @@
 #include <linux/sched.h>
 #include <linux/ptrace.h>
 #include <uapi/linux/audit.h>
-#include <linux/tty.h>
 
 #define AUDIT_INO_UNSET ((unsigned long)-1)
 #define AUDIT_DEV_UNSET ((dev_t)-1)
@@ -344,23 +343,6 @@ static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
        return tsk->sessionid;
 }
 
-static inline 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;
-}
-
-static inline void audit_put_tty(struct tty_struct *tty)
-{
-       tty_kref_put(tty);
-}
-
 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
 extern void __audit_bprm(struct linux_binprm *bprm);
@@ -518,12 +500,6 @@ static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
 {
        return -1;
 }
-static inline struct tty_struct *audit_get_tty(struct task_struct *tsk)
-{
-       return NULL;
-}
-static inline void audit_put_tty(struct tty_struct *tty)
-{ }
 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
 { }
 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,

diff --git a/kernel/audit.c b/kernel/audit.c
index 384374a1d232edcec9a2afc5a85693ade95196aa..d5971010e44a2616c1f59c703425a91e6b8f67ed 100644 (file)
--- 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 cbbe6bb6496ea934f86ffcfedffe971c76bbb692..a492f4c4e7106aa7c4c23e7bcb8e502477df6638 100644 (file)
--- 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 33dafa70229d53206e1c1541640838920283150c..60a354eed2fa246a18c4c139de25e20e3291b32e 100644 (file)
--- 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>