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| author | Luca Dariz <luca@orpolo.org> | 2022-06-28 11:49:25 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2022-08-27 23:52:08 +0200 |
| commit | d29057d0866a663d4a5a867147a4a6366c12a647 (patch) | |
| tree | 32ce8276b2857d78edbada89d2d60eddea3a19dd /routine.c | |
| parent | 39e68c6ed7c9d6a2a73ab079846bc53c2839351f (diff) | |
| download | mig-d29057d0866a663d4a5a867147a4a6366c12a647.tar.gz mig-d29057d0866a663d4a5a867147a4a6366c12a647.tar.bz2 mig-d29057d0866a663d4a5a867147a4a6366c12a647.zip | |
fix message fields alignment for 64 bit
On x86_64 alignment of structures is different, as the pointer size is different.
For simplicity we keep the same 4-byte alignment as used on
32-bit. This simplifies the support for 32-bit rpc on 64-bit kernels,
and also it seems not worth as an optimization, as we would need to
add more code in the ipc_kmsg* routines.
* routine.c: align both short and long descriptors
* utils.c: use a fixed alignment for data fields in structures
representing messages.
Signed-off-by: Luca Dariz <luca@orpolo.org>
Message-Id: <20220628094927.442907-2-luca@orpolo.org>
Diffstat (limited to 'routine.c')
| -rw-r--r-- | routine.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -321,9 +321,9 @@ rtFindSize(const argument_t *args, u_int mask) { ipc_type_t *it = arg->argType; + /* might need proper alignment on demanding 64bit archies */ + size = (size + word_size-1) & ~(word_size-1); if (arg->argLongForm) { - /* might need proper alignment on 64bit archies */ - size = (size + word_size-1) & ~(word_size-1); size += sizeof_mach_msg_type_long_t; } else { size += sizeof_mach_msg_type_t; |