diff options
Diffstat (limited to 'sys/sys/mount.h')
| -rw-r--r-- | sys/sys/mount.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/sys/mount.h b/sys/sys/mount.h index 00040932e7a3..1477ffad9fe3 100644 --- a/sys/sys/mount.h +++ b/sys/sys/mount.h @@ -57,6 +57,9 @@ typedef struct fsid { int32_t val[2]; } fsid_t; /* filesystem id type */ /* * File identifier. * These are unique per filesystem on a single machine. + * + * Note that the offset of fid_data is 4 bytes, so care must be taken to avoid + * undefined behavior accessing unaligned fields within an embedded struct. */ #define MAXFIDSZ 16 |