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binfmt_misc: turn the entry behavior flags into an enum

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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.

Link: https://patch.msgid.link/20260710-work-binfmt_misc-locking-v3-8-a162f7cb58d6@kernel.org
Reviewed-by: Jori Koolstra <jkoolstra@xs4all.nl>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2026-07-10 11:33:09 +02:00
parent c9fa1f1ccf
commit 9eca1a625c
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1 changed files with 8 additions and 4 deletions
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12
fs/binfmt_misc.c
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@ -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;