[PATCH v3 08/24] binfmt_misc: turn the entry behavior flags into an enum

[Christian Brauner <brauner@kernel.org>]

The MISC_FMT_* behavior flags are macros using unsigned long literals
while the entry bit numbers right above them are now a proper enum.
Move the flags into an enum as well so every flags word constant is
declared in one form and shows up in debuginfo. (1U << N) keeps the
enumerators within unsigned int range which is well-defined for enum
constants and the values are unchanged when promoted to the unsigned
long flags word.

No functional change.

Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---
 fs/binfmt_misc.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 90962044d19e..98ad1383ba6b 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -47,10 +47,14 @@ enum binfmt_misc_entry_bits {
 	MISC_FMT_ENABLED_BIT	= 0,
 	MISC_FMT_MAGIC_BIT	= 1,
 };
-#define MISC_FMT_PRESERVE_ARGV0 (1UL << 31)
-#define MISC_FMT_OPEN_BINARY (1UL << 30)
-#define MISC_FMT_CREDENTIALS (1UL << 29)
-#define MISC_FMT_OPEN_FILE (1UL << 28)
+
+/* Entry behavior flags, fixed at registration time. */
+enum binfmt_misc_entry_flags {
+	MISC_FMT_PRESERVE_ARGV0	= (1U << 31),
+	MISC_FMT_OPEN_BINARY	= (1U << 30),
+	MISC_FMT_CREDENTIALS	= (1U << 29),
+	MISC_FMT_OPEN_FILE	= (1U << 28),
+};
 
 typedef struct {
 	struct hlist_node node;

-- 
2.53.0