jffs2: constify xattr_handler

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/jffs2/acl.c

@@ -419,7 +419,7 @@ static int jffs2_acl_setxattr(struct dentry *dentry, const char *name,
 	return rc;
 }
 
-struct xattr_handler jffs2_acl_access_xattr_handler = {
+const struct xattr_handler jffs2_acl_access_xattr_handler = {
 	.prefix	= POSIX_ACL_XATTR_ACCESS,
 	.flags	= ACL_TYPE_DEFAULT,
 	.list	= jffs2_acl_access_listxattr,
@@ -427,7 +427,7 @@ struct xattr_handler jffs2_acl_access_xattr_handler = {
 	.set	= jffs2_acl_setxattr,
 };
 
-struct xattr_handler jffs2_acl_default_xattr_handler = {
+const struct xattr_handler jffs2_acl_default_xattr_handler = {
 	.prefix	= POSIX_ACL_XATTR_DEFAULT,
 	.flags	= ACL_TYPE_DEFAULT,
 	.list	= jffs2_acl_default_listxattr,

fs/jffs2/acl.h

@@ -31,8 +31,8 @@ extern int jffs2_acl_chmod(struct inode *);
 extern int jffs2_init_acl_pre(struct inode *, struct inode *, int *);
 extern int jffs2_init_acl_post(struct inode *);
 
-extern struct xattr_handler jffs2_acl_access_xattr_handler;
-extern struct xattr_handler jffs2_acl_default_xattr_handler;
+extern const struct xattr_handler jffs2_acl_access_xattr_handler;
+extern const struct xattr_handler jffs2_acl_default_xattr_handler;
 
 #else
 

fs/jffs2/security.c

@@ -77,7 +77,7 @@ static size_t jffs2_security_listxattr(struct dentry *dentry, char *list,
 	return retlen;
 }
 
-struct xattr_handler jffs2_security_xattr_handler = {
+const struct xattr_handler jffs2_security_xattr_handler = {
 	.prefix = XATTR_SECURITY_PREFIX,
 	.list = jffs2_security_listxattr,
 	.set = jffs2_security_setxattr,

fs/jffs2/xattr.c

@@ -904,7 +904,7 @@ struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c,
  * do_jffs2_setxattr(inode, xprefix, xname, buffer, size, flags)
  *   is an implementation of setxattr handler on jffs2.
  * -------------------------------------------------- */
-struct xattr_handler *jffs2_xattr_handlers[] = {
+const struct xattr_handler *jffs2_xattr_handlers[] = {
 	&jffs2_user_xattr_handler,
 #ifdef CONFIG_JFFS2_FS_SECURITY
 	&jffs2_security_xattr_handler,
@@ -917,8 +917,8 @@ struct xattr_handler *jffs2_xattr_handlers[] = {
 	NULL
 };
 
-static struct xattr_handler *xprefix_to_handler(int xprefix) {
-	struct xattr_handler *ret;
+static const struct xattr_handler *xprefix_to_handler(int xprefix) {
+	const struct xattr_handler *ret;
 
 	switch (xprefix) {
 	case JFFS2_XPREFIX_USER:
@@ -955,7 +955,7 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
 	struct jffs2_inode_cache *ic = f->inocache;
 	struct jffs2_xattr_ref *ref, **pref;
 	struct jffs2_xattr_datum *xd;
-	struct xattr_handler *xhandle;
+	const struct xattr_handler *xhandle;
 	ssize_t len, rc;
 	int retry = 0;
 

fs/jffs2/xattr.h

@@ -93,9 +93,9 @@ extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname
 extern int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname,
 			     const char *buffer, size_t size, int flags);
 
-extern struct xattr_handler *jffs2_xattr_handlers[];
-extern struct xattr_handler jffs2_user_xattr_handler;
-extern struct xattr_handler jffs2_trusted_xattr_handler;
+extern const struct xattr_handler *jffs2_xattr_handlers[];
+extern const struct xattr_handler jffs2_user_xattr_handler;
+extern const struct xattr_handler jffs2_trusted_xattr_handler;
 
 extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
 #define jffs2_getxattr		generic_getxattr
@@ -122,7 +122,7 @@ extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
 
 #ifdef CONFIG_JFFS2_FS_SECURITY
 extern int jffs2_init_security(struct inode *inode, struct inode *dir);
-extern struct xattr_handler jffs2_security_xattr_handler;
+extern const struct xattr_handler jffs2_security_xattr_handler;
 #else
 #define jffs2_init_security(inode,dir)	(0)
 #endif /* CONFIG_JFFS2_FS_SECURITY */

fs/jffs2/xattr_trusted.c

@@ -47,7 +47,7 @@ static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list,
 	return retlen;
 }
 
-struct xattr_handler jffs2_trusted_xattr_handler = {
+const struct xattr_handler jffs2_trusted_xattr_handler = {
 	.prefix = XATTR_TRUSTED_PREFIX,
 	.list = jffs2_trusted_listxattr,
 	.set = jffs2_trusted_setxattr,

fs/jffs2/xattr_user.c

@@ -47,7 +47,7 @@ static size_t jffs2_user_listxattr(struct dentry *dentry, char *list,
 	return retlen;
 }
 
-struct xattr_handler jffs2_user_xattr_handler = {
+const struct xattr_handler jffs2_user_xattr_handler = {
 	.prefix = XATTR_USER_PREFIX,
 	.list = jffs2_user_listxattr,
 	.set = jffs2_user_setxattr,