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authorDave Chinner <dchinner@redhat.com>2017-10-09 12:15:34 -0700
committerTheodore Ts'o <tytso@mit.edu>2017-10-18 19:52:36 -0400
commit734f0d241d2b4e47383bd0d16e21e06f6cb8d2c3 (patch)
treedf6e3cee4d0bfef93a6c65d3bd43bc0514ae565c /fs/ext4/ext4.h
parent9e66317d3c92ddaab330c125dfe9d06eee268aff (diff)
downloadlinux-734f0d241d2b4e47383bd0d16e21e06f6cb8d2c3.tar.bz2
fscrypt: clean up include file mess
Filesystems have to include different header files based on whether they are compiled with encryption support or not. That's nasty and messy. Instead, rationalise the headers so we have a single include fscrypt.h and let it decide what internal implementation to include based on the __FS_HAS_ENCRYPTION define. Filesystems set __FS_HAS_ENCRYPTION to 1 before including linux/fscrypt.h if they are built with encryption support. Otherwise, they must set __FS_HAS_ENCRYPTION to 0. Add guards to prevent fscrypt_supp.h and fscrypt_notsupp.h from being directly included by filesystems. Signed-off-by: Dave Chinner <dchinner@redhat.com> [EB: use 1 and 0 rather than defined/undefined] Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index e2abe01c8c6b..ca6d6166b85c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -33,17 +33,15 @@
#include <linux/percpu_counter.h>
#include <linux/ratelimit.h>
#include <crypto/hash.h>
-#ifdef CONFIG_EXT4_FS_ENCRYPTION
-#include <linux/fscrypt_supp.h>
-#else
-#include <linux/fscrypt_notsupp.h>
-#endif
#include <linux/falloc.h>
#include <linux/percpu-rwsem.h>
#ifdef __KERNEL__
#include <linux/compat.h>
#endif
+#define __FS_HAS_ENCRYPTION IS_ENABLED(CONFIG_EXT4_FS_ENCRYPTION)
+#include <linux/fscrypt.h>
+
/*
* The fourth extended filesystem constants/structures
*/