Martchus
/
mdadm
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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 <jsorensen@fb.com>
This commit is contained in:
Jes Sorensen 2019-07-09 14:15:38 -04:00
parent a4f7290c20
commit 7039d1f820
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
mdadm.h
View File

@ -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.