security: Make inode argument of inode_getsecurity non-const

Make the inode argument of the inode_getsecurity hook non-const so that
we can use it to revalidate invalid security labels.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
diff --git a/include/linux/security.h b/include/linux/security.h
index 2f4c1f7..9ee61b2 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -270,7 +270,7 @@
 int security_inode_removexattr(struct dentry *dentry, const char *name);
 int security_inode_need_killpriv(struct dentry *dentry);
 int security_inode_killpriv(struct dentry *dentry);
-int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc);
+int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
 void security_inode_getsecid(const struct inode *inode, u32 *secid);
@@ -719,7 +719,7 @@
 	return cap_inode_killpriv(dentry);
 }
 
-static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
+static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 {
 	return -EOPNOTSUPP;
 }