diff options
| author | Flavio Cruz <flaviocruz@gmail.com> | 2023-11-25 01:27:53 -0500 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-12-03 01:00:46 +0100 |
| commit | 2db6b9b7b23b3bab944665b3b6012d24dd425d97 (patch) | |
| tree | 0b8834e28536f345b79293290b50a30e96bd7442 | |
| parent | 6e0f722df45f6c261f250a8814458e19c2bed550 (diff) | |
Reorder mach_msg_type_t fields to ensure msgt_name and msgt_size are byte aligned
msgt_unused appears right after msgt_size since msgt_size can be reduced
to only 8 bits in the future, so we leave the door opened to make
msgt_unused 13 bits long.
Message-ID: <ZWGT6a6GeqFAtOUn@jupiter.tail36e24.ts.net>
| -rw-r--r-- | include/mach/message.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/include/mach/message.h b/include/mach/message.h index 17d3592f..906ae797 100644 --- a/include/mach/message.h +++ b/include/mach/message.h @@ -238,12 +238,12 @@ typedef struct { * kernel. Otherwise, we would have to replicate some of the MiG logic * internally in the kernel. */ - unsigned int msgt_inline : 1, - msgt_longform : 1, - msgt_deallocate : 1, - msgt_name : 8, + unsigned int msgt_name : 8, msgt_size : 16, - msgt_unused : 5; + msgt_unused : 5, + msgt_inline : 1, + msgt_longform : 1, + msgt_deallocate : 1; mach_msg_type_number_t msgt_number; #else unsigned int msgt_name : 8, @@ -263,12 +263,12 @@ typedef struct { * union to overlay with the old field names. */ mach_msg_type_t msgtl_header; struct { - unsigned int msgtl_inline : 1, - msgtl_longform : 1, - msgtl_deallocate : 1, - msgtl_name : 8, + unsigned int msgtl_name : 8, msgtl_size : 16, - msgtl_unused : 5; + msgtl_unused : 5, + msgtl_inline : 1, + msgtl_longform : 1, + msgtl_deallocate : 1; mach_msg_type_number_t msgtl_number; }; }; |