From 7039d1f8200b9599b23db5953934fdb43b0442e0 Mon Sep 17 00:00:00 2001 From: Jes Sorensen Date: Tue, 9 Jul 2019 14:15:38 -0400 Subject: [PATCH] mdadm.h: Introduced unaligned {get,put}_unaligned{16,32}() We need these to avoid gcc9 going all crazy on us. Signed-off-by: Jes Sorensen --- mdadm.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/mdadm.h b/mdadm.h index 427cc523..0fa9e1bd 100644 --- a/mdadm.h +++ b/mdadm.h @@ -191,6 +191,36 @@ struct dlm_lksb { #endif #endif /* __KLIBC__ */ +/* + * Partially stolen from include/linux/unaligned/packed_struct.h + */ +struct __una_u16 { __u16 x; } __attribute__ ((packed)); +struct __una_u32 { __u32 x; } __attribute__ ((packed)); + +static inline __u16 __get_unaligned16(const void *p) +{ + const struct __una_u16 *ptr = (const struct __una_u16 *)p; + return ptr->x; +} + +static inline __u32 __get_unaligned32(const void *p) +{ + const struct __una_u32 *ptr = (const struct __una_u32 *)p; + return ptr->x; +} + +static inline void __put_unaligned16(__u16 val, void *p) +{ + struct __una_u16 *ptr = (struct __una_u16 *)p; + ptr->x = val; +} + +static inline void __put_unaligned32(__u32 val, void *p) +{ + struct __una_u32 *ptr = (struct __una_u32 *)p; + ptr->x = val; +} + /* * Check at compile time that something is of a particular type. * Always evaluates to 1 so you may use it easily in comparisons. -- 2.39.2