User and group ids are about to become able to hold a UUID or a GUID besides a classic 32 bit id. Add the predicates code that can only keep a classic id (in 32 bits of a buffer, for instance) tests with, so it can be converted before the types change. For now every id is a classic one.
No functional change. Assisted-by: Claude:claude-opus-5-5 Signed-off-by: Jan Koester <[email protected]> --- include/linux/uidgid.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/uidgid.h b/include/linux/uidgid.h index 2dc767e08f..182c682458 100644 --- a/include/linux/uidgid.h +++ b/include/linux/uidgid.h @@ -22,6 +22,20 @@ struct uid_gid_map; #define KUIDT_INIT(value) (kuid_t){ value } #define KGIDT_INIT(value) (kgid_t){ value } +/* + * Whether an id is a classic 32 bit id. All of them are for now; code that + * needs one (to store it in 32 bits, for example) checks with these. + */ +static inline bool uid_is_legacy(kuid_t uid) +{ + return true; +} + +static inline bool gid_is_legacy(kgid_t gid) +{ + return true; +} + #ifdef CONFIG_MULTIUSER static inline uid_t __kuid_val(kuid_t uid) { -- 2.56.0
