constify ima_d_path()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

security/integrity/ima/ima.h

diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index 5d0f611..d3a939b 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -170,7 +170,7 @@
 int ima_store_template(struct ima_template_entry *entry, int violation,
 		       struct inode *inode, const unsigned char *filename);
 void ima_free_template_entry(struct ima_template_entry *entry);
-const char *ima_d_path(struct path *path, char **pathbuf);
+const char *ima_d_path(const struct path *path, char **pathbuf);
 
 /* IMA policy related functions */
 int ima_match_policy(struct inode *inode, enum ima_hooks func, int mask,

security/integrity/ima/ima_api.c

diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index 370e42d..5a2218f 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -313,7 +313,7 @@
 	iint->flags |= IMA_AUDITED;
 }
 
-const char *ima_d_path(struct path *path, char **pathbuf)
+const char *ima_d_path(const struct path *path, char **pathbuf)
 {
 	char *pathname = NULL;