fscrypt: constify struct fscrypt_operations

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Richard Weinberger <richard@nod.at>

fs/ext4/super.c

@@ -1173,7 +1173,7 @@ static unsigned ext4_max_namelen(struct inode *inode)
 		EXT4_NAME_LEN;
 }
 
-static struct fscrypt_operations ext4_cryptops = {
+static const struct fscrypt_operations ext4_cryptops = {
 	.key_prefix		= "ext4:",
 	.get_context		= ext4_get_context,
 	.prepare_context	= ext4_prepare_context,
@@ -1184,7 +1184,7 @@ static struct fscrypt_operations ext4_cryptops = {
 	.max_namelen		= ext4_max_namelen,
 };
 #else
-static struct fscrypt_operations ext4_cryptops = {
+static const struct fscrypt_operations ext4_cryptops = {
 	.is_encrypted		= ext4_encrypted_inode,
 };
 #endif

fs/f2fs/super.c

@@ -1170,7 +1170,7 @@ static unsigned f2fs_max_namelen(struct inode *inode)
 			inode->i_sb->s_blocksize : F2FS_NAME_LEN;
 }
 
-static struct fscrypt_operations f2fs_cryptops = {
+static const struct fscrypt_operations f2fs_cryptops = {
 	.key_prefix	= "f2fs:",
 	.get_context	= f2fs_get_context,
 	.set_context	= f2fs_set_context,
@@ -1179,7 +1179,7 @@ static struct fscrypt_operations f2fs_cryptops = {
 	.max_namelen	= f2fs_max_namelen,
 };
 #else
-static struct fscrypt_operations f2fs_cryptops = {
+static const struct fscrypt_operations f2fs_cryptops = {
 	.is_encrypted	= f2fs_encrypted_inode,
 };
 #endif

fs/ubifs/crypto.c

@@ -77,7 +77,7 @@ int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn,
 	return 0;
 }
 
-struct fscrypt_operations ubifs_crypt_operations = {
+const struct fscrypt_operations ubifs_crypt_operations = {
 	.flags			= FS_CFLG_OWN_PAGES,
 	.key_prefix		= "ubifs:",
 	.get_context		= ubifs_crypt_get_context,

fs/ubifs/super.c

@@ -2000,7 +2000,7 @@ static struct ubifs_info *alloc_ubifs_info(struct ubi_volume_desc *ubi)
 }
 
 #ifndef CONFIG_UBIFS_FS_ENCRYPTION
-struct fscrypt_operations ubifs_crypt_operations = {
+const struct fscrypt_operations ubifs_crypt_operations = {
 	.is_encrypted		= __ubifs_crypt_is_encrypted,
 };
 #endif

fs/ubifs/ubifs.h

@@ -1824,7 +1824,7 @@ int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn,
 		  unsigned int *out_len, int block);
 #endif
 
-extern struct fscrypt_operations ubifs_crypt_operations;
+extern const struct fscrypt_operations ubifs_crypt_operations;
 
 static inline bool __ubifs_crypt_is_encrypted(struct inode *inode)
 {