integrity: path_check update

- Add support in ima_path_check() for integrity checking without
incrementing the counts. (Required for nfsd.)
- rename and export opencount_get to ima_counts_get
- replace ima_shm_check calls with ima_counts_get
- export ima_path_check

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/mm/shmem.c b/mm/shmem.c
index b25f95c..a817f75 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2684,7 +2684,7 @@
 	if (IS_ERR(file))
 		return PTR_ERR(file);
 
-	ima_shm_check(file);
+	ima_counts_get(file);
 	if (vma->vm_file)
 		fput(vma->vm_file);
 	vma->vm_file = file;