audit: set the name_len in audit_inode for parent lookups

Currently, this gets set mostly by happenstance when we call into
audit_inode_child. While that might be a little more efficient, it seems
wrong. If the syscall ends up failing before audit_inode_child ever gets
called, then you'll have an audit_names record that shows the full path
but has the parent inode info attached.

Fix this by passing in a parent flag when we call audit_inode that gets
set to the value of LOOKUP_PARENT. We can then fix up the pathname for
the audit entry correctly from the get-go.

While we're at it, clean up the no-op macro for audit_inode in the
!CONFIG_AUDITSYSCALL case.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 6b97e2466fad..9553ed006042 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -804,7 +804,7 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, umode_t, mode,
 
         if (oflag & O_CREAT) {
                 if (path.dentry->d_inode) {     /* entry already exists */
-                        audit_inode(name, path.dentry);
+                        audit_inode(name, path.dentry, 0);
                         if (oflag & O_EXCL) {
                                 error = -EEXIST;
                                 goto out;
@@ -824,7 +824,7 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, umode_t, mode,
                         error = -ENOENT;
                         goto out;
                 }
-                audit_inode(name, path.dentry);
+                audit_inode(name, path.dentry, 0);
                 filp = do_open(&path, oflag);
         }
 
@@ -978,7 +978,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
                 goto out_fput;
         }
         info = MQUEUE_I(inode);
-        audit_inode(NULL, f.file->f_path.dentry);
+        audit_inode(NULL, f.file->f_path.dentry, 0);
 
         if (unlikely(!(f.file->f_mode & FMODE_WRITE))) {
                 ret = -EBADF;
@@ -1094,7 +1094,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
                 goto out_fput;
         }
         info = MQUEUE_I(inode);
-        audit_inode(NULL, f.file->f_path.dentry);
+        audit_inode(NULL, f.file->f_path.dentry, 0);
 
         if (unlikely(!(f.file->f_mode & FMODE_READ))) {
                 ret = -EBADF;